JP2001288725A - Pile-type foundation structure and method for constructing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile-type foundation structure which can be constructed by simple construction work in a marine construction field or the like. SOLUTION: A plurality of sleeves 1 are connected together by reinforcing members to build a frame structure 19 for superstructure work. Then, steel pipe piles 9 are inserted into the sleeves 1, and a gradual hardening material 10 such as mortar is injected into a gap between each sleeves 1 and each steel pipe pile 9, to thereby combine the former and the latter together. Further, the precast steel reinforced concrete top erection 50 incorporates therein the steel pipe piles and the frame structure 19 fixed thereto, which top erection is manufactured in a factory, on a land yard, or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile type foundation structure using a steel pipe pile, such as a pile type horizontal pier or a pier foundation in a water area such as a harbor.

[0002]

2. Description of the Related Art Normally, for example, the head of a steel pipe pile 9 used for a pile-type pier, a pile-type breakwater in a water area such as a harbor, or a pier foundation in a river or the like has a reinforced concrete beam as shown in FIG. Pile-type substructures 40a which are connected to each other by top slab concrete are known.
Conventionally, the beam 43 made of reinforced concrete in the pile type foundation structure 40a has been constructed by the so-called cast-in-place concrete method in which the steel pipe pile 9 is cast on the underwater ground and then constructed at the current position on the ocean. In other words, the arrangement of the reinforcing bars between the pile heads and the piles, the installation of the shoring, the arrangement of the formwork, the placement of the concrete, the hardening, the removal of the formwork, etc. are performed at the current position on the sea after the placement of the steel pipe pile 9. It was done.

[0003]

However, in the case of the pile type foundation structure using the cast-in-place concrete method, there are the following problems. The offshore work took a long time, and the work was affected by the waves during the work, and the shoring and the formwork were damaged, and rework was sometimes performed. In the early stages of concrete curing, when affected by waves,
In some cases, there was a problem in the development of concrete strength. Because the superstructure is a solid section of reinforced concrete,
The superstructure was heavy, and the inertial force acting during an earthquake became large. To counter this, a steel pipe pile 9 having a large cross section and a large number of steel pipe piles 9 had to be used.

The present invention is an improvement of the above-mentioned conventional drawbacks. The present invention is changed to a conventional construction method in which the installation of the steel pipe pile 9 and the construction of its head connection structure are all carried out on the sea. It is an object of the present invention to provide a pile-type substructure that can be easily constructed at a site where the partial connection structure is manufactured in advance on a land yard or the like and transported to a marine site.

[0005]

In order to achieve the above-mentioned object, in a pile type substructure according to the first aspect of the present invention, a plurality of sheath tubes are connected to each other by a reinforcing member to form a frame structure. A steel pipe pile 9 is inserted into the inside of the plurality of sheath pipes 1, and a time-curable material 10 such as mortar is filled between the sheath pipe 1 and the steel pipe pile 9. And

[0006] In the invention of claim 2, claim 1 is
In the pile type substructure described above, the hollow space is formed by arranging the reinforcing member 2 in parallel with an open section member such as a steel pipe or a steel pipe with an external projection, or an H-section steel or an H-section steel having a projection on the outer surface of a flange. It is a hollow member 33 such as a member having a hollow portion formed.

According to the third aspect of the present invention, in the pile type substructure according to any one of the first and second aspects, an upper work locking member 3 or a suspension fitting 4 is provided at an upper end of the sheath tube 1. It is characterized in that the upper work locking member 3 provided integrally is provided integrally.

According to a fourth aspect of the present invention, in the pile type substructure according to any one of the first, second, and third aspects, the outer peripheral surface of the steel pipe pile 9 in a range corresponding to the sheath pipe 1 is defined. It is characterized in that the projection 21 is provided integrally in the range.

According to a fifth aspect of the present invention, in the pile type substructure according to any one of the first to third or fourth aspects, a projection 22 is integrally provided in a predetermined area on the inner surface of the sheath tube 1. It is characterized by having been done.

[0010] In the invention according to claim 6, claim 1 is provided.
The pile-type substructure according to any one of (1) to (3) or (5), wherein at least a predetermined range of the steel pipe pile 9 in a range corresponding to the sheath pipe 1 is a steel pipe 30 with an external projection.

Further, according to a seventh aspect of the present invention, in the pile type substructure according to any one of the first to fourth or sixth aspects, the sheath tube 1 is a steel tube 31 having an inner surface projection.

Further, according to the invention of claim 8, in the pile type substructure according to any one of claims 1 to 6, or 7, a spacer 3 is provided at a predetermined position on the inner surface of the sheath tube 1.
2 is provided.

According to a ninth aspect of the present invention, in the pile type substructure according to any one of the first to seventh or eighth aspects, a swing preventing jig 23 is provided at a predetermined position of the sheath tube 1. It is characterized by having.

According to a tenth aspect of the present invention, in the pile type substructure according to any one of the first to eighth or ninth aspects, a projection for gripping a sealing material is provided at an interval on a lower inner surface of the sheath tube 1. The members 14a and 14b are integrally provided, and the sealing material 1 is provided between the sealing material holding protruding members 14a and 14b.
The seal member 13 is fixed to the seal member gripping projecting member 14 by bolts 16 inserted through the seal member retaining bolt insertion holes, and the seal member 13 is disposed on the outer surface of the steel pipe pile 9. It is characterized by being close to.

Furthermore, in the invention of claim 11,
The pile type substructure according to any one of claims 1 to 9 or 10, wherein a bottom form 11 is in contact with a lower end of the sheath tube 1 directly or via a cushioning material 12 for sealing. Features.

According to a twelfth aspect of the present invention, in the pile type substructure according to any one of the first to tenth or eleventh aspects, the bottom forms 11 are connected to each other by the pile spacing member 1.
7 are connected.

According to a thirteenth aspect of the present invention, in the pile type substructure according to any one of the first to eleventh or twelfth aspects, the steel plate for fixing a reinforcing steel is provided at a predetermined position of the sheath tube.
And a reinforcing bar 7 is fixed to the reinforcing steel plate 6.

Furthermore, in the invention of claim 14,
The pile-type substructure according to any one of claims 1 to 12 or 13, wherein a steel plate 6 for fixing a reinforcing bar is fixed to a predetermined position of the sheath tube 1, and a reinforcing bar 7 is fixed to the steel plate 6 for fixing a reinforcing bar. And the sheath tube 1, the steel plate 6 for fixing the reinforcing bar, and the reinforcing bar 7.
Is characterized in that a mold 24 is arranged so as to surround.

According to a fifteenth aspect of the present invention, in the pile type substructure according to any one of the first to thirteenth or fourteenth aspects, a steel plate 6 for fixing a reinforcing bar is fixed to a predetermined position of the sheath tube 1. A reinforcing bar 7 is fixed to the reinforcing steel plate 6, and the sheath tube 1, the reinforcing steel plate 6, the reinforcing bar 7 and the reinforcing member 2 are embedded in concrete.

In the method of constructing a pile type substructure according to a sixteenth aspect, a plurality of sheathed tubes 1 arranged at intervals are connected to each other by a reinforcing member 2 having a hollow portion such as a steel tube and manufactured in advance. Transporting the superstructure frame structure, disposing it at a predetermined position on the head of a plurality of steel pipe piles 9 cast on the ground at intervals, and fitting a sheath pipe to each of the steel pipe piles 9;
Next, a time-hardening material 10 such as mortar is filled and hardened between each sheath pipe and the steel pipe pile 9, and the reinforcing member 2 is used as a part of the supporting material, and the reinforcing steel reinforcement and the formwork are formed. The installation work is performed, and then concrete is poured so as to embed the sheath tube 1, the upper rebar and the reinforcing member 2, and the concrete is cured and hardened.

Further, in the method for constructing a pile-type substructure according to a seventeenth aspect, a plurality of sheathed tubes 1 arranged at intervals are connected by a reinforcing member 2 having a hollow portion such as a steel tube, and a superstructure is constructed. A frame structure for an upper part with an upper rebar is constructed in advance by constructing a frame structure for the upper part, and an upper part rebar is arranged on the frame structure for the upper part. Transport the frame structure,
A plurality of steel pipe piles 9 placed on the ground at intervals are arranged at predetermined positions on the heads, and a sheath pipe is fitted to each of the steel pipe piles 9. A time-setting material 10 such as mortar is filled and hardened, and a formwork is laid while using the reinforcing member 2 as a part of a supporting material. It is characterized by casting concrete to bury 2 and curing and hardening.

In the construction method for a pile type substructure according to the eighteenth aspect, a plurality of sheathed tubes 1 arranged at intervals are connected by a reinforcing member 2 having a hollow portion such as a steel tube, and a superstructure is constructed. A frame structure for a superstructure with a form supporting structure, in which an upper reinforcing bar, a formwork, and a supporting structure are integrally disposed on the upper structure frame structure, and The frame structure for superstructure with the frame support is transported and arranged at a predetermined position on the head of a plurality of steel pipe piles 9 cast on the ground at intervals, and a sheath is provided on each of the steel pipe piles 9. A pipe is fitted, and then a time-hardening material 10 such as mortar is filled between each sheath pipe and the steel pipe pile 9.
After hardening, concrete is poured into the sheath tube 1, the upper rebar and the reinforcing member 2 so as to be embedded therein, and the concrete is cured and hardened.

In the method for constructing a pile type substructure according to the nineteenth aspect, a plurality of sheathed tubes 1 arranged at intervals are connected by a reinforcing member 2 having a hollow portion such as a steel tube for superstructure. In addition to forming a frame structure, an upper rebar is integrally disposed on the upper frame structure, and then concrete is poured into the upper rebar and the reinforcing member 2 so as to be embedded therein, and then cured and cured. Prefabricated precast reinforced concrete superstructure with superstructure frame structure is constructed in advance, and the precast reinforced concrete superstructure with superstructure frame structure is transported, and a plurality of steel pipes cast on the ground at intervals. It is arranged at a predetermined position on the head of the pile 9 and a sheath tube is fitted to each of the steel tube piles 9. Then, a time-hardening material 10 such as mortar is filled and hardened between each sheath tube and the steel tube pile 9. Characterized in that it.

[0024]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIGS. 9 to 11 show a divided frame structure 18 for superstructure used in the pile type substructure of the present invention. On each upper outer surface of the pair of sheathed tubes 1 made of a steel tube, four steel plates 6 for fixing the reinforcing steels each having an arc-shaped inner peripheral surface similar to the outer peripheral surface of the sheathed tube 1 are substantially at the same level (substantially the difference in the reinforcing steel diameter) Are arranged at equal intervals (90 degrees) in the circumferential direction at the upper and lower sides on the same plane, and the base ends of the sheath tube 1 An upper rebar anchoring portion 6a is formed by being fixed to the outer peripheral surface by welding. In addition, four sheets each having an arc-shaped inner peripheral surface similar to the outer peripheral surface of the sheath tube 1 are provided below the respective sheath tubes 1. Reinforcing steel plates 6 are arranged at equal angular (90 °) intervals in the circumferential direction. End is secured by welding to the outer peripheral surface of the sheath tube 1, the lower reinforcing bar fixing portion 6b is formed. Further, the adjacent reinforcing steel plates 6 are connected by welding if necessary. The reason why the pile head connecting beam frame structure is divided is to facilitate land transportation by a trailer or the like.

Each of the sheath tubes 1 adjacent to each other at an interval is disposed on the lower side between the upper reinforcing bar fixing portion 6a and the lower reinforcing bar fixing portion 6b, and is made of a steel pipe whose end is fixed by welding or the like. The reinforcing tube 2 is connected to the sheath tube 1 on the opposite side to the reinforcing member 2 by welding, and the base side of the reinforcing member 2 made of a short steel tube whose end is closed by a closing plate is fixed to the sheath tube 1 by welding. Thus, a short end projecting reinforcing member 2a is formed. Further, in the direction perpendicular to the center line of the reinforcing member 2, the base portion side of the end projecting reinforcing member 2 b made of a steel pipe disposed on the end portion of the floor slab is fixed to the sheath tube 1 by welding. The end overhanging reinforcing members 2a and 2b are members that also serve as cantilever overhanging beam members. The base side of the short steel pipe 2c for a joint is fixed to the sheath pipe 1 by welding at the same level opposite to the end extension reinforcing member 2b. As described below, the short steel pipe 2c for a joint is brought into contact with the reinforcing member 2 made of a steel pipe and joined thereto by welding.
It is used to form a superstructure frame structure 19 (see FIG. 12) in which a pair of divided superstructure frame structures 18 are integrated. The short steel pipe 2c for the joint and the reinforcing member 2 are reinforced by horizontal ribs fixed thereto by welding, and the sheath tube 1, the reinforcing member 2 (2a, 2b), and the steel plate 6 for reinforcing steel are welded to these. Reinforced by vertical ribs fixed by

At the upper part of each of the sheath tubes 1, a lower part of a hanging metal fitting 4 having a hanging hole 5 at an upper part of a vertical steel plate 5a arranged diagonally in an upper frame structure 19 to be described later is sheathed. The base of a locking member 5c made of a vertical steel plate is fixed to the inner peripheral surface of the pipe 1 at right angles and parallel to the lower surface of the vertical steel plate 5a at intervals on both sides by welding. The tip of the member is in contact with the inner peripheral surface of the upper end of the sheath tube 1 and is fixed by welding, so that the superstructure locking member 3 is formed. A portion above the superstructure locking member 3,
That is, the portion of the suspension fitting 4 is cut by fusing at an appropriate time after the superstructure frame is disposed on the steel pipe pile 9, leaving only the superstructure locking member 3. Since the superstructure retaining member 3 is provided, the mortar 10a is filled between the steel pipe pile 9 and the sheath tube 1 and the superstructure concrete 8 is cast so as to embed them.
The divided frame structure for superstructure 18 or the frame structure for superstructure 19 and the steel pipe pile 9 can be firmly integrated, and as described later, the superstructure frame structure 1
9, a superstructure frame structure 19 with an upper rebar having an upper rebar A including a beam rebar, a form in which a supporter and a formwork are integrally incorporated, and concrete is poured into the formwork Then, any of the unitized and modified superstructure units up to the precast concrete superstructure 50, which has been removed from the mold and precast, can be firmly integrated with the steel pipe pile 9.

An annular reinforcing bar is fixed to the inner peripheral surface of the sheath tube 1 at intervals in the up-down direction by welding.
2 is provided, and the mortar filled in the sheath tube 1 by the projections 22 acts to prevent slippage from the steel pipe pile 9. As shown in FIGS. 11 and 21, the protrusion 22 is provided with a vertical level difference from the protrusion 21 provided on the outer peripheral surface of the steel pipe pile 9. On the outer peripheral surface of the steel pipe pile 9 in a range corresponding to the sheath pipe 1,
Reinforcing bars are disposed annularly at intervals in the vertical direction and are fixed by welding to form projections 21. The projections 22 in the sheath tube 1 and the projections 21 on the outer surface of the steel pipe pile 9 form a mortar. 10a, the sheath tube 1 and the steel pipe pile 9 are integrated and prevented from slipping, and an external force (horizontal force, (Upward and downward forces) can be reliably transmitted to the steel pipe pile 9.

As shown in FIG. 21, a plurality of (three or four) are provided on the upper end surface of the sheath tube 1 at equal angular intervals in the circumferential direction.
) May be provided. The rocking prevention jig 23 has a bolt holding member 23a made of a steel plate fixed to the upper end surface of the sheath tube 1 by welding. The bolt holding member 23a has a lateral female screw hole 23b facing the center of the steel pipe pile 9. The lateral female screw hole 23b is screwed with a swing prevention bolt 23c. By crimping the tip of the rocking prevention bolt 23c to the outer surface of the steel pipe pile 9, rocking of the sheath tube 1 can be prevented, that is, rocking of the divided frame structure 18 or the frame structure 19. Can be prevented, and the initial curing of the mortar 10a cast into the sheath tube 1 can be ensured. Note that the swing prevention jig 23 may be provided with a female screw hole directly in the sheath tube 1.
Without projecting the steel pipe pile 9 upward from the sheath pipe 1, FIG.
The upper part of the steel pipe pile 9 can be accommodated in the sheath tube 1 as in the embodiment shown in FIG.

As shown in FIG. 19, the base end of a semicircular spacer 32 made of steel or the like is welded to the middle or upper portion of the inner peripheral surface of the sheath tube 1 at circumferential intervals. By fixing and providing the spacer 32,
When fitting the divided frame structure 18 or the frame structure 19 having the sheath tube 1 or the precast concrete superstructure 50 having the same, the spacer 32 arranged in the sheath tube 1 is used as a guide. It can be arranged on the steel pipe pile 9 with high precision, and a predetermined covering can be secured.

FIG. 12 shows a superstructure frame structure 19, in which a pair of the superstructure divided frame structures 18 are arranged in parallel at the same level and spaced apart from each other, and 2c are arranged so as to face each other, and the end of the reinforcing steel pipe 2d is fixed to the opposite end of the joint steel pipe 2c by welding to form a substantially planar rectangular or flat cross-shaped superstructure frame structure. 19 are configured.

As shown in FIG. 13 to FIG. 15, an upper reinforcing steel A
Are arranged at intervals in the front-rear direction or the left-right direction over the reinforcing member 2 made of a steel pipe, between the upper reinforcing bar fixing portions 6a between the opposing sheath tubes 1. The ends are fixed by welding and arranged in parallel, and an upper end-side main reinforcement 2d is arranged outside the respective sheath tubes 1 in a cantilever manner above the cantilever-type end reinforcing member 2 to form a sheath tube. 1 is fixed to the upper reinforcing bar fixing portion 6a on the end side by welding, and a number of lower main reinforcing bars 6d extend between the lower reinforcing bar fixing portions 6b between the opposing sheath tubes 1 below the reinforcing member 2 made of a steel pipe. An end-side lower main reinforcing bar 2e is arranged parallel to the upper main reinforcing bar 6c at an interval in the front-rear direction or the left-right direction and opposed to the upper main reinforcing bar 6c, and an end is fixed by welding. Below the cantilevered end reinforcing member 2 Are arranged so as to face the end side upper main reinforcement 2d cantilevered, it is fixed by welding on the end side of the lower reinforcing bar fixing portion 6b of the sheath pipe 1. The ribs 2 surround the upper main bar 6c and the lower main bar 6d.
A large number 5 are arranged at intervals and fixed to the upper main reinforcing bar 6c or the lower main reinforcing bar 6d by welding or a number line.

Further, the cantilevered end side upper main bar 2d is provided.
The end side upper peripheral reinforcing bar 2f is arranged in parallel at intervals over the distal end of the end side, and is fixed to the end side upper main reinforcing bar 2d by a number line or the like, and is spaced over the distal end of the end side lower main reinforcing bar 2e. An end-side lower peripheral reinforcing bar 2g is arranged in parallel with the end-side upper peripheral reinforcing bar 2f, and is fixed to an end-side lower main reinforcing bar 2e by a number line, etc. A rib 25 is arranged so as to surround the reinforcing bar 2f and the end-side lower peripheral reinforcing bar 2g, and is fixed to the end-side upper peripheral reinforcing bar 2f or the end-side lower peripheral reinforcing bar 2g by a number line or the like. In addition, at the intersections of the end portions of the peripheral reinforcing bars 2f and 2g which are orthogonal to each other, they are fixed to each other with a line or the like. Haunch bars (not shown) are appropriately disposed at the corners, and are fixed to the end peripheral reinforcing bars 2f, 2g, the upper main bars 6c, 2d, or the lower main bars 6d, 2e, etc. by a number line or the like.

The main reinforcing bar 26 is configured to surround the reinforcing member 2 made of a hollow steel tube so as to surround the reinforcing member 2 made of a steel tube between the opposing sheath tubes 1. So that it cantilevered from tube 1
An overhanging reinforced beam 27 is configured to surround the end-side reinforcing member 2, and a peripheral reinforced beam 28 is formed over the end of the overhanged reinforced beam 27, and the peripheral reinforced beam 28 extends over the upper peripheral edge. It is configured in a rectangular ring shape to reinforce.
The main reinforcing beam 26, the overhanging reinforcing beam 27, and the peripheral reinforcing beam 2
8 constitutes an upper reinforcing bar A, and if necessary, the main reinforcing beam 26, the overhanging reinforcing beam 27, the peripheral reinforcing beam 28, and the reinforcing steel superstructure 50 with a frame structure having no opening. A floor reinforcing bar (not shown) is disposed over the upper part of the floor.

The above-described divided frame structure 18 or frame structure 19 or frame structure 19 with upper rebar is manufactured in advance in a factory or a land yard, and the like.
The steel pipe pile 9 cast on the ground may be conveyed and placed by land or sea transportation as appropriate, or a formwork (not shown) may be integrated around the frame structure 19 with the upper rebar. To a state in which a shoring (not shown) is integrally provided, and may be manufactured in advance in a factory or a land yard, and may be transported. Concrete is cast to bury the body 19, and a precast reinforced concrete superstructure 50 with a cured and hardened frame structure is manufactured in advance in a factory or a land yard or the like, and this is mounted on the steel pipe pile 9 set in the ground. Alternatively, they may be transported and arranged by land or sea transportation as appropriate.

The lower end of the portion of the sheath tube 1 in the precast reinforced concrete superstructure 50 with the frame structure is open. In FIGS. 13 to 15, the upper work locking member 3 and the suspension fitting 4 are omitted.

FIG. 16 shows a sheath tube 1 used in the present invention.
Shows a bottom formwork 11 arranged at the lower end of
A semi-circular upper bearing plate 11 is provided at a predetermined position above the steel pipe pile 9.
a, and a pair of half-cylindrical bottom mold units 11d having a semi-cylindrical cylindrical body 11b and a coupling flange 11c having a lateral hole for bolt insertion are coupled by coupling bolts 11e inserted into the lateral holes. The bottom form 11 is disposed on the steel pipe pile 9 such that the upper surface thereof is at the lower end level of the sheath tube 1 in the precast reinforced concrete superstructure 50, and the connection bolts are provided. The bottom form unit 11d is firmly pressed and fixed to the steel pipe pile 9 so that the steel pipe pile 9 is tightened by tightening the steel pipe pile 11e (see FIG. 18). When such a bottom form 11 is used, as shown in FIG.
When the annular sealing buffer material 12 such as rubber or a foam having elastic properties is placed and the lower end surface of the sheath tube 1 is placed thereon, the sheath tube 1 can be placed while buffering. At the same time, it is possible to prevent the time-hardening material 10 such as the mortar 10a filled in the sheath tube 1 from leaking.

Further, a sealing material 13 may be provided on the sheath tube 1 instead of the bottom mold 11. In this case, as shown in FIG. 21, on the inner peripheral surface of the lower part of the sheath tube 1, a projecting member 1 for gripping a sealing material comprising a pair of steel annular inward flanges is provided.
4 (14a, 14b) are arranged so as to abut on each other at an interval in the vertical direction, and one or both base ends (outer peripheral edges) thereof are fixed to the sheath tube 1 by welding, and the respective seals are provided. The base end (outer peripheral edge) of the annular sealing material 13 such as a foam having elastic properties such as a polyethylene foam or a cross-linked polyolefin foam having closed cells is provided between the material gripping protruding members 14a and 14b. The sealing material extends over a vertical hole 15 for inserting a sealing material locking bolt, which is disposed so as to be in contact with and is provided at a circumferential interval between the sealing material gripping protruding members 14a and 14b and the sealing material 13. The locking bolt 16 is inserted and tightened by a nut screwed to the locking bolt 16, so that the sealing member 13 is fixed to the sealing member gripping projections 14a, 14b. The inner diameter of the sealing member 13 is set smaller than the outer diameter of the steel pipe pile 9, and the inner peripheral surface of the sealing member 13 is formed as shown in FIG.
As shown in FIG. 0, it is formed so as to be gradually inclined toward the upper edge so as to form an acute angle so that the upper edge becomes the thin end portion 13a. Therefore, as shown in FIG. 21, when the sheath tube 1 is fitted to the steel pipe pile 9 from above, the sealing material 13 is pressed against the outer surface of the steel pipe pile 9 in a state of being bent on the outer surface of the steel pipe pile 9. Therefore, the sealing material 13 can be used as a sealing device at the bottom of the sheath tube 1, and even if the time-hardening filler 10 such as mortar 10 a is filled between the steel pipe pile 9 and the sheath tube 1, Can be held.

When the bottom form 11 is used, the sheath tube 1 is fitted and mounted on the bottom form 11 to thereby form the frame structure 1.
9 can be supported, but when a sealing material 13 for holding the mortar 10a shown in FIG. The member 3 may be placed directly or with an appropriate spacer interposed. A bracket (not shown) for supporting the sheath tube 1 on the outer peripheral surface of the steel pipe pile 9 as appropriate.
May be provided.

As shown in FIGS. 17 and 18,
The semi-annular upper bearing plates 11a of the bottom formwork 11 attached to the steel pipe piles 9 are connected and fixed to each other by a pile spacing member 17 such as an L-shaped steel in the front-rear direction, the left-right direction, and the diagonal direction by welding or bolts. Since the interval between the steel pipe piles 9 adjacent in the front-rear direction and the left-right direction can be set to a predetermined interval, the sheath pipe 1 in the precast reinforced concrete superstructure 50 or the like can be accurately and reliably fitted and mounted on the steel pipe pile 9. Can be.

FIGS. 1 to 8 show a pile type foundation structure 40 such as a pier in the present invention or a pier 51 constructed by arranging many of them in series. The pier 51 extends from land side to offshore side or land side. Then, a plurality of steel pipe piles 9 are driven into the underwater ground 20 as a set of four units so that the steel pipe piles 9 are supported by the support layer 20a at intervals in the front-rear direction and the left-right direction. The distance between the sheath pipes 1 in the precast concrete superstructure 50 or the frame structure 19 or the split type frame structure 18 is set. Each steel pipe pile 9 is provided with a heavy anticorrosion coating 42 at a portion corresponding to the splash zone.

The steel pipe pile 9 and the precast concrete superstructure 50 fitted to the steel pipe pile 9 cast in a state where the arrangement interval is set are filled between the steel pipe pile 9 and the sheath pipe 1. Time-curable filler 10 such as mortar 10a
To fill and harden to integrate. In the case of this embodiment, the precast concrete superstructure 50 and the steel pipe pile 9
The construction period can be greatly shortened because the construction is simply integrated. Therefore, not only can the construction cost of the pier 51 be significantly reduced, but also when the frame structure 19 having the hollow reinforcing member is used, the weight of the precast concrete superstructure can be reduced. FIG. 1 shows a form in which a precast reinforced concrete superstructure 50 in which the entire superstructure is substantially closed is used.

The precast concrete superstructure 5
In addition to constructing the pier 51 by previously manufacturing the pier 51, the present invention can be implemented in various unitized modifications as described below. Will be described. For example, the superstructure frame structure 19 shown in FIG. 12 is manufactured in advance in a factory or a land yard, and the like.
This may be transported and arranged on the steel pipe pile 9.
In this case, the portions of the respective sheath tubes 1 in the superstructure frame structure 19 are disposed substantially concentrically with respect to the steel tube piles 9, and the aging of the mortar 10 a or the like between the sheath tube 1 and the steel tube piles 9 with time. The material 10 is filled, the steel pipe pile 9 and the superstructure frame structure 19 are integrated, and the reinforcing member 2 serving also as a core disposed between the sheath pipes 1 is used as a part of the supporting material.
Reinforcing work for the upper rebar A, arranging the formwork 58 and 60, and installing a support such as a bottom formwork holding member 57 (see FIGS. 27 and 28), and placing the concrete 8 in the formwork 58 and 60. It is cast, cured and hardened to construct a steel pipe pile type substructure 40 of one unit. Such steps are performed simultaneously at a plurality of locations or are repeated as appropriate to construct a continuous pier 51 as shown in FIG. In this embodiment, since the superstructure frame is structured, the construction period can be relatively shortened, and the construction cost of the pier 51 can be relatively reduced, The weight of the superstructure 50 can be reduced. In particular, since the pile head of the steel pipe pile 9 is firmly connected by the frame structure 19 for the superstructure, it is hard to be affected by waves during the construction of the superstructure. Frame structure 1
Since 8, 19 can be manufactured in advance in a factory or land yard,
The working time at the current position on the sea or the like as in the related art can be extremely short.

Also, an upper frame structure 19 with an upper reinforcing bar to which an upper frame bar 19 including a beam reinforcing bar is fixed in advance by welding or the like is attached to the upper frame structure 19 at a factory or a land yard. It may be manufactured and transported and arranged on the steel pipe pile 9. In this case, the respective sheath pipes 1 in the superstructure frame structure 19 with the upper steel rebar are arranged concentrically, and the time-hardening material 10 such as mortar 10 a is placed between the sheath pipe 1 and the steel pipe pile 9. After filling, the steel pipe pile 9 and the upper frame structure 19 with the upper steel bar are integrated, and the reinforcing member 2 serving also as a core disposed between the respective sheath pipes 1 is used as a part of the supporting material. While
Supports such as the molds 58 and 60 and the bottom mold holding member 55 (see FIGS. 27 and 28) are installed, and the molds 58 and 60 are installed.
Concrete 8 is poured into the inside, cured and hardened, and a pile type substructure 40 of one unit is constructed. A plurality of such steps are performed at the same time or are repeated as appropriate, so that a continuous pier 51 as shown in FIG. 1 is constructed.

As shown in FIGS. 27 and 28,
Supporting and formwork of the bottom formwork holding member 55 and the like on the superstructure frame structure 19 with upper rebars, in which the superstructure frame structure 19 and the upper rebar A including the beam rebar are fixed in advance by welding or the like. The assembled state of 58 and 60 may be manufactured in advance in a factory or a land yard or the like, and may be transported and placed on the steel pipe pile 9. The mold is usually removed from the mold. However, when the mold is used as a buried mold, a fiber reinforced concrete plate made of fiber reinforced concrete (GRC) is often used. This form will be described in more detail. A steel bar having a substantially inverted U-shape or an inverted concave shape is provided on a reinforcing member 2 (2a, 2b) formed of a hollow member such as a steel pipe at intervals in the longitudinal direction. Are formed, and the semicircular upper portions 56 of the respective bottom mold holding members 55 are fitted and mounted, and are fixed by welding.
In (2a, 2b), the bottom mold holding member 55 is
(2a, 2b), and each leg 57 made of a screw of the bottom mold holding member 55 is connected to the bottom mold 5 such as a split mold.
The bottom mold 58 is supported by a locking member 59 such as a nut that is inserted into the through hole 8 and is screwed to each of the legs 57 and engaged with the lower surface of the bottom mold 58. . The bottom mold 58 is disposed so as to be in contact with the outer peripheral side surface of the bottom mold 11 or is arranged so as to be in contact with the lower circular outer peripheral surface of the sheath tube 1. In the case of contact, the contact portion with the sheath tube 1 has an arc-shaped side surface (not shown). Further, a side mold 60 such as a split mold, which is arranged so as to face at both sides of the reinforcing member 2 (2a, 2b) or both sides of the end side peripheral reinforcing bars 2f, 2g with a space therebetween, is the bottom mold 58. The side mold 60 is removably mounted on the bottom mold 58 by a metal fitting (not shown) for interconnecting the molds, and the respective side parts arranged to face each other. The formwork 60 is disposed at both ends thereof at predetermined intervals by formwork fixing nuts, formwork support members, and formwork space holding members 61 such as separators. In addition, the small beam side, that is, the end side peripheral reinforcing bar 2f, 2
When it is necessary to support the intermediate portion of the bottom formwork 58 disposed below the bottom form g, the bottom formwork holding member 55 fixed to the reinforcing member 2 as shown by a two-dot chain line in FIG. The upper end of a bottom form support member 62 such as a channel steel or an H-section steel is horizontally supported at the lower end of the base form so as to extend in the front-rear direction or the left-right direction, and is placed on the bottom form support member. The bottom mold 58 on the end side peripheral edge may be placed as described above. The bottom formwork 58 on the end side is supported by a plurality of bottom formwork holding members 57 attached to the reinforcing member 2 provided to protrude to the end side. In the case of this embodiment, the reinforcing member 2 also serving as a support member is provided on the upper frame structure 19 with an upper reinforcing bar.
In addition, the sheath pipe 1 in a state in which the supporting structure for holding the formwork such as the bottom formwork holding member 55 and the formwork 58, 60 is assembled is disposed substantially concentrically on the steel pipe pile 9, and the sheath pipe 1 and the steel pipe pile are arranged. 9 is filled with a time-hardening material 10 such as a mortar 10 a to integrate the steel pipe pile 9 and the upper frame structure 19 with an upper reinforcing bar, and a core disposed between the sheath pipes 1. While utilizing the reinforcing member 2 also serving as a material as a part of the support material, the formwork 58, 60 and the support work are installed, and the formwork 5
The concrete 8 is poured into the insides 8 and 60, and the concrete 8 is cured and hardened to construct the pile-type substructure 40 of one unit. A plurality of such steps are performed at the same time or are repeated as appropriate, so that a continuous pier 51 as shown in FIG. 1 is constructed.

Further, as in the above-described embodiment, the superstructure frame structure 19 and the superstructure steel bar A including the beam reinforcement are supported by the superstructure frame structure 19 with the upper steel bar which is previously fixed by welding or the like. The prefabricated reinforced concrete superstructure 50 with the superstructure frame structure 19 built therein is manufactured in advance in a factory or a land yard or the like. Then, this may be transported and arranged on the steel pipe pile 9. In this case, a part of each sheath pipe in the precast reinforced concrete superstructure 50 is connected to the steel pipe pile 9.
And a time-hardening material 10 such as mortar 10a is filled between the sheath pipe 1 and the steel pipe pile 9 to integrate the steel pipe pile 9 and the precast reinforced concrete superstructure 50 into one unit. Is constructed.
A plurality of such steps are performed at the same time or are repeated as appropriate, so that a continuous pier 51 as shown in FIG. 1 is constructed.

When the present invention is carried out, in order to enhance the integration between the sheath tube 1 and the steel pipe pile 9, as shown in FIG.
From a coil 37 with a linear projection formed in a coil shape from a strip-shaped steel sheet having a trapezoidal linear projection continuously provided in the longitudinal direction at intervals on the surface of the strip-shaped steel sheet, this is manufactured by a spiral tube machine, As shown in FIG. 25, the main body of the sheath tube 1 can be formed by cutting a steel pipe 31 with an inner surface projection having the projections 21 integrally provided on the inner surface to a required size. This makes it possible to omit the step of fixing the reinforcing steel in the sheath tube 1 by welding.

In practicing the present invention, the reinforcing member 2
Instead of a normal steel pipe, a hollow member 34 (33) made of a steel pipe 30 with an external projection as shown in FIG. 24 manufactured by a spiral tube machine from a coil 37 with a linear projection as shown in FIG. FIG. 26 (A)
As shown in FIG. 5, side-opening members 38 such as steel H-section steel or channel steel are provided side by side, and (if necessary, the adjacent flanges 41 are partially welded to each other at intervals in the longitudinal direction. Alternatively, the hollow reinforcing member 2 may be constituted by a hollow member 35 (33) having a hollow portion in the longitudinal direction, and the longitudinal end portion may be welded to the sheath tube 1. 26, the divided frame structure 18 or the frame structure 19 may be configured. In this case, in order to enhance the integration with the superstructure concrete 8, FIGS. As shown in C), the outer surface of each flange is longitudinally spaced,
A large number of projections 39 may be provided. By using the hollow member 33 in this manner, the amount of concrete 8 to be poured can be reduced, and not only the weight of the superstructure can be reduced, but also the superstructure 50 can be strongly reinforced. Even when a force acting to separate the adjacent steel pipe piles 9 from each other acts, the resistance to the force can be increased.

In the above-described embodiment, the divided frame structure 19 is constituted by the half-divided frame structure 18 in consideration of the restriction of transportation from the factory to the construction point. Half-divided frame structure 1
The half-segment frame structure 18 is formed as a frame structure 19 in which the short steel pipe 2c for joint 8 of FIG.
The pile type substructure 40 may be configured by being mounted on the steel pipe piles 9 that are cast in series at intervals.

In the above embodiment, the precast reinforced concrete superstructure 50 having an opening at the superstructure other than the sheath tube 1 or the precast reinforced concrete superstructure 50 whose entire surface is closed is used. Which form to use may be appropriately selected according to the design.

[0050]

According to the present invention, the following effects can be obtained. (1) Since the pile head is firmly connected by the frame structure, it is unlikely to be affected by waves during the construction of the superstructure. (2) Since a divided frame structure or a frame structure or a frame structure with an upper rebar and a superstructure made of precast reinforced concrete incorporating the frame structure are manufactured in advance in a factory or a land yard, it is necessary to use a conventional marine method. Work time at the current position can be extremely short. (3) Since the superstructure locking member 3 also plays a role of reliably transmitting the pushing force acting on the steel pipe pile 9 to the superstructure via the sheath tube, the structural stability is improved. (4) When a hollow member is used as the reinforcing member 2, the superstructure is lightened, and the penetrating force acting on the superstructure during an earthquake is reduced, so that the cross-sectional area and the number of the steel pipe piles 9 can be reduced and economical. It is possible to construct a simple pile type foundation structure.

[Brief description of the drawings]

FIG. 1A is a schematic plan view showing a state in which a pile type pier is built by installing a number of pile type foundation structures of the present invention,
(B) is a plan view thereof.

FIG. 2 is an enlarged side view of FIG. 1;

FIG. 3A is a plan view showing a state in which a precast concrete superstructure and a pile of one embodiment used in the present invention are connected, and FIG. 3B is a cross-sectional view taken along line II of FIG. (C) is a sectional view taken along line II-II of (A).

4A is a sectional view taken along line III-III in FIG. 3A, and FIG. 4B is a sectional view taken along IV-IV in FIG.
It is a line sectional view.

FIG. 5 (A) is a right side view in FIG. 3 (A),
FIG. 3B is a rear view in FIG. 3A, and FIG. 3C is a front view in FIG. 3A.

FIG. 6 is a longitudinal sectional front view showing a joint portion between a precast concrete superstructure and a steel pipe pile in a state in which an upper rebar is omitted.

FIG. 7 is a sectional view taken along line VV of FIG. 6;

FIG. 8 is a sectional view taken along line VI-VI of FIG. 6;

9A is a plan view showing a divided frame structure used in the present invention, and FIG. 9B is a front view of FIG. 9A.

FIG. 10 is a side view of FIG. 9 (A).

FIG. 11 is a partial longitudinal side view of FIG. 9 (A).

FIG. 12 is a plan view showing a state in which the divided frame structures are connected to each other by welding a connecting reinforcing member to form a double-girder frame structure.

FIG. 13 is a partial cross-sectional plan view showing a state where an upper rebar is arranged.

14A is a sectional view taken along line VII-VII of FIG. 13, FIG. 14B is a sectional view taken along line VIII-VIII of FIG. 13, and FIG. 14C is a sectional view taken along line IX-IX of FIG. Yes,
FIG. 14D is a sectional view taken along line XX of FIG. 13.

15A is a sectional view taken along the line XI-XI in FIG. 13, FIG. 15B is a sectional view taken along the line XII-XII in FIG.
(C) is a sectional view taken along line XIII-XIII in FIG. 13,
(D) is a sectional view taken along line XIV-XIV in FIG. 13.

FIG. 16A is a front view of a bottom formwork, and FIG. 16B is a plan view thereof.

FIG. 17 is a plan view showing a state where adjacent steel pipe piles are connected by a pile spacing member attached to a bottom formwork.

18 is a partially longitudinal sectional front view showing a part of FIG. 17 in an enlarged manner.

FIG. 19 is a partially longitudinal front view showing a state in which a spacer is attached to a sheath pipe and a relationship with a steel pipe pile.

FIG. 20 is a longitudinal sectional front view showing a lower portion of the sheath tube in a state where a sealing material is attached to the sheath tube.

FIG. 21 is a vertical sectional front view showing a state where a steel pipe pile is inserted into a sheath pipe and a time-curable filler such as mortar is filled between the sheath pipe and the steel pipe pile.

FIG. 22 is a longitudinal sectional front view showing a state in which a cushioning material for sealing is provided between a bottom mold and a sheath tube.

FIG. 23 is a perspective view showing a state in which a strip-shaped steel sheet with linear projections is wound into a coil shape.

FIG. 24 is a schematic perspective view showing one embodiment of a steel pipe with external projections.

FIG. 25 is a perspective view showing one embodiment of a steel pipe having an inner surface projection.

FIG. 26A is a perspective view showing a configuration in which an open-section member (H-section steel) that opens laterally is arranged side by side to form a reinforcing member composed of a hollow member, and FIG. 26B is an open section. It is a front view which shows one form which provided the protrusion in the flange in a member (H-shaped steel), and (C) is the side view.

FIG. 27 is a schematic plan view showing a state in which a shoring and a formwork are arranged around a frame structure with a reinforcing steel bar for superstructure.

28A is a cross-sectional view taken along line XV-XV in FIG. 27, and FIG. 28B is a cross-sectional view showing a part of FIG.

FIG. 29 is a partially longitudinal front view showing a conventional pile type substructure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Sheath tube 2 Reinforcement member 2a End overhang reinforcement member 2b End overhang reinforcement member 2c Short steel pipe for joint 2d End side upper main reinforcement 2e End lower lower reinforcement 2f End side upper peripheral reinforcement 2g End side lower peripheral reinforcement 3 Superstructure retaining member 4 Suspension metal fitting 5 Hanging hole 5a Vertical steel plate 5c Locking member 6 Reinforcing steel plate 6a Upper reinforcing bar fixing portion 6b Lower reinforcing bar fixing portion 6c Upper main reinforcing bar 6d Lower main reinforcing bar 7 Reinforcing steel 8 Concrete 9 Steel pipe pile 10 Temporary hardening Material 10a Mortar 11 Bottom form 11a Semi-annular upper support plate 11b Semi-cylindrical cylindrical body 11c Connection flange 11d Bottom form unit 11e Connection bolt 12 Seal buffer 13 Seal 13a Thin tip 14 Seal protrusion Installation member 14a Projection member for gripping sealing material 14b Projection member for gripping sealing material 15 For insertion of sealing material locking bolt Hole 16 Seal material locking bolt 17 Pile spacing holding member 18 Split frame structure 19 Frame structure 20 Underground ground 20a Rock 21 Projection 21a Linear projection 22 Projection 23 Swing prevention jig 23a Bolt holding member 23b Horizontal female screw hole 23c Swing Movement prevention bolt 24 Formwork 25 Rib 26 Main reinforced beam 27 Overhanging reinforced beam 28 Peripheral reinforced beam 29 Projection 30 Steel tube with external projection 31 Steel tube with internal projection 32 Spacer 33 Hollow member 34 Hollow member such as steel tube with external projection 35 H A hollow member having a hollow space formed by juxtaposing open section members such as a mold steel, etc. 36 A hollow member having an open cross section member such as H-section steel having a protrusion on the outer surface of a flange juxtaposed to form a hollow space 37 Coil with projection 38 Open-section member 39 Projection 40 Pile-type foundation 40a Conventional pile-type foundation 41 F Lange 42 Heavy Corrosion Protection 43 Reinforced Concrete Beam 50 Precast Concrete Superstructure 51 Pier 55 Bottom Form Holder 56 Semicircular Top 57 Bottom Form Holder 58 Form 59 Locking Member 60 Form 61 Space Hold Tool 62 Bottom formwork support member A Upper rebar

Claims (19)

[Claims] A frame structure is formed by connecting a plurality of sheath tubes with a reinforcing member, a steel pipe pile is inserted into the plurality of sheath tubes, and a gap between the sheath tube and the steel pipe pile is provided. A pile-type substructure characterized by being filled with a time-curable material such as mortar. 2. A hollow member in which a hollow space is formed by juxtaposing an open-section member such as a steel pipe or a steel pipe with an external projection, or an H-section steel or an H-section steel having a projection on the outer surface of a flange is used as a reinforcing member. The pile type substructure according to claim 1, wherein the substructure is a hollow member such as a member having the same. 3. An upper work locking member integrally provided with an upper work locking member or a suspension metal fitting at an upper end portion of the sheath tube. The pile type foundation structure described in Crab. 4. The pile according to claim 1, wherein a projection is integrally provided in a predetermined range on an outer peripheral surface of the steel pipe pile in a range corresponding to the sheath tube 1. Formula foundation structure. 5. The pile-type substructure according to claim 1, wherein a projection is integrally provided in a predetermined range on an inner surface of the sheath tube 1. 6. The pile-type substructure according to claim 1, wherein at least a predetermined range of the steel pipe pile in a range corresponding to the sheath pipe is a steel pipe with an external projection. 7. The pile-type substructure according to claim 1, wherein the sheath tube is a steel tube with an inner surface projection. 8. A spacer (32) is provided at a predetermined position on the inner surface of the sheath tube (1).
Or a pile-type substructure according to any of 7. 9. The pile-type substructure according to claim 1, wherein a swing preventing jig is provided at a predetermined position of the sheath tube. 10. A sealing member-holding protruding member is integrally provided at a lower inner surface of the sheath tube with a space therebetween, and a base side of the sealing material is disposed between the sealing member-holding protruding members.
2. The sealing material is fixed to the sealing material holding protruding member by the bolt inserted through the seal locking bolt insertion hole, and the sealing material is in close contact with the outer surface of the steel pipe pile. The pile-type foundation structure according to any one of to 8 to 9, wherein 11. The pile according to claim 1, wherein a bottom form is abutted on the lower end of the sheath tube 1 directly or via a cushioning material for sealing. Formula foundation structure. 12. The pile type substructure according to claim 1, wherein the bottom forms are connected to each other by a pile spacing member. 13. The steel plate for fixing a reinforcing bar is fixed at a predetermined position of the sheath tube, and a reinforcing bar is fixed to the steel plate for fixing a reinforcing bar. The pile type substructure described in 1. 14. A steel plate for fixing a reinforcing bar is fixed to a predetermined position of the sheath tube, and a reinforcing bar is fixed to the steel plate for fixing a reinforcing bar.
The pile type substructure according to any one of claims 1 to 12, wherein a formwork is arranged so as to surround the sheath tube, the steel plate for fixing the reinforcing bar, and the reinforcing bar. 15. A steel plate for fixing a reinforcing bar is fixed to a predetermined position of the sheath tube, a reinforcing bar is fixed to the steel plate for fixing a reinforcing bar, and the sheath tube, the steel plate for fixing a reinforcing bar, a reinforcing bar, and a reinforcing member are embedded in concrete. The pile type substructure according to any one of claims 1 to 13, wherein the pile type substructure is provided. 16. A plurality of sheathed tubes arranged at intervals are connected by a reinforcing member having a hollow portion such as a steel tube, and convey a prefabricated frame structure for superstructure, and are spaced apart from each other. A plurality of steel pipe piles placed on the ground are arranged at predetermined positions on the heads, and a sheath pipe is fitted to each of the steel pipe piles. Then, a time-curable material such as mortar is placed between each sheath pipe and the steel pipe pile. Filling and hardening, performing the work of arranging the reinforcing steel bar and arranging the formwork while using the reinforcing member as a part of the support material, and then embedding the sheath tube and the upper reinforcing steel bar and the reinforcing member. A method of constructing a pile-type foundation structure characterized by placing concrete, curing and hardening. 17. A plurality of sheathed tubes arranged at intervals are connected by a reinforcing member having a hollow portion such as a steel tube to form a frame structure for superstructure, and the frame structure for superstructure is connected to the frame structure for superstructure. An upper frame structure with upper rebar is constructed in advance by arranging upper rebars, and the upper frame structure with upper rebar is transported and placed on the ground at intervals. A plurality of steel pipe piles are placed at predetermined positions on the heads, and a sheath pipe is fitted to each of the steel pipe piles, and then a time-curable material such as mortar is filled and cured between each of the sheath pipes and the steel pipe piles. Performing the work of arranging the formwork while using the reinforcing member as a part of the supporting material, and then placing concrete so as to embed the upper rebar and the reinforcing member, curing and curing. Construction method of pile type foundation structure. 18. A plurality of sheathed tubes arranged at intervals are connected by a reinforcing member having a hollow portion such as a steel tube to form a frame structure for superstructure, and the frame structure for superstructure is connected to the frame structure for superstructure. An upper frame structure with a form support is constructed in advance by integrally arranging a reinforcing steel bar, a formwork and a support, and the frame structure for the upper work with the form support is transported. A plurality of steel pipe piles placed on the ground at intervals are arranged at predetermined positions on the heads, and a sheath pipe is fitted to each of the steel pipe piles. Then, a mortar or the like is provided between each sheath pipe and the steel pipe piles. A method of constructing a pile-type substructure, characterized by filling and curing the time-hardenable material of the above, and then placing concrete so as to embed the upper rebar and the reinforcing member, and curing and curing. 19. A superstructure frame structure is formed by connecting a plurality of sheathed tubes arranged at intervals by a reinforcing member having a hollow portion such as a steel tube to form a superstructure frame structure. An upper rebar is integrally disposed, and then concrete is poured into the upper rebar and the reinforcing member 2 so as to be embedded therein, and then a precast reinforced concrete superstructure with a frame structure for an upper is constructed by curing and curing. Manufacture and transport the precast reinforced concrete superstructure with its superstructure frame structure, place it at a predetermined position on the head of a plurality of steel pipe piles that have been cast into the ground at intervals, and apply to each of the steel pipe piles A method for constructing a pile-type substructure, comprising fitting a sheath tube, and then filling and hardening a time-curable material such as mortar between each sheath tube and a steel tube pile.