JPH11148129A - Connection device of mutual pc concrete piles and steel frame beam and pc concrete pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and rigidly connect PC concrete piles or a steel frame beam and a PC concrete pile by screwing screw members inserted in collars at both ends of a connection member, into screw holes that tensile members are taken out of end plates of both pile ends. SOLUTION: Collars are formed at both ends of a bar-form member provided with radial ribs and a plurality of screw-insertion holes are formed in the collar to constitute a connection member. Then, when PC concrete piles 101 are connected, a tensile member 8 used for introducing a tension to a PC steel bar on producing the pile is taken out of the side end plate 1 of one pile 101 head. And the collar of the connection member is brought into contact with the end plate 1 and bolts are inserted and screwed into the screw holes from which the tensile members 8 have been removed, from the screw insertion holes of the connection member. And then, the connection member is fitted likewise to the end plate 2 of the other pile 101. And further, a beam- connection face is radially protruded in the collar of the connection member and the connection faces protruded to the beam end arranged to butt each other and the butt ends are held and fixed by a pair of connection plates. In this way, these pipes can be easily and rigidly connected without a screw processing or a welding work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for connecting PC concrete piles and connecting PC concrete and beams used in various construction sites.

[0002]

2. Description of the Related Art FIG. 10 is a longitudinal sectional view showing a part of an upper part and a lower part of a PC concrete pile. In the drawing, reference numeral 1 denotes a head-side end plate of the PC concrete pile 101, 2 denotes a joint-side end plate of the PC concrete pile 101, and 3 denotes a head-side end plate 1 and a joint-side end plate 2 which are spaced at substantially equal intervals. Through holes 3 through holes 4 and 5
PC steel rods rounded out from a and 3b to prevent them from falling off, 6 and 7 are screw holes provided adjacent to holes 4 and 5 of head end plate 1 and joint end plate 2, and 8 and 9 are screw holes Tensile members attached to 6, 7 are helical wires wound around the PC steel bar 3, and 11 is a PC
Deformed reinforcing bars arranged between the PC steel bars in parallel with the steel bars 3;
Reference numerals 2 and 13 denote skirts which are wound around the periphery of the head side end and the joint side end of the PC concrete pile 101.

Next, the production of PC concrete will be described. First, a PC concrete pile 101 is manufactured by attaching a tension device (not shown) such as a jack to the tension members 8 and 9 and applying tension to the PC steel bar 3 so that the PC steel bar 3 is embedded by, for example, a centrifugal force method. After the concrete has hardened, the tension device is removed from the tension members 8 and 9, and the tension members 8 and 9 are also removed from the end plates 1 and 2.

[0004] The ready-made PC concrete pile 101 manufactured as described above is usually used as a pile as it is, but when it becomes necessary to connect it, the PC concrete with the tension member removed is shown in FIG. Then, the joint side end plate 2 of the other PC concrete pile 101 is brought into contact with the head side end plate 1 of one concrete pile 101 to be connected, and the contacted head side end plate 1 and joint side end The contact area of the plate 2 is welded 14 and joined.

FIG. 12 is a partial longitudinal sectional view showing another connection state of the PC concrete piles. In the figure,
15 is formed on the outer peripheral surface of the skirts 12 and 13 to form an uneven portion,
Reference numeral 16 denotes a connecting band which is wrapped around the skirts 12, 13 of the PC concretes 101, 101 to be connected with their ends abutting each other, and wound around the outside thereof. Is formed. Reference numeral 18 denotes a bolt for attaching the connecting band 16 to the skirts 12 and 13 by screwing the holes 16a of the connecting band 16 into the screw holes 12a and 13a of the skirt,
With this connecting band 16, PC concrete piles 101, 10
Connect 1

[0006]

Since the conventional connection of concrete piles is constituted as described above, the connection by welding has the following problems. (1) In rainy weather, the joints of concrete piles cannot be welded, and work steps cannot be sequentially performed well. (2) A welding power source and a welding machine are required at the work site. (3) Since welding work is performed at a work site, a skilled welder is required. (4) Inspection of the welded portion after welding can be performed only by appearance inspection, which is problematic in quality control. (5) Due to the heat input during welding, there is a possibility that the effect of the prestress by the PC steel material and the steel wire disposed in the concrete pile may be lost. (6) In welding, when a stress is applied, brittle fracture is caused, and the concrete pile may be instantaneously broken at the welded portion. (7) When a ready-made concrete pile is welded and joined and used as a pillar, problems arise in strength and quality control.

Further, the connection using the connecting band requires a specially shaped skirt and a connecting band, which is expensive, and the strength in the horizontal direction of the connecting portion depends only on the thickness of the connecting band. There were issues such as

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a connecting device capable of easily and firmly connecting a PC concrete pile and connecting a PC concrete pile and a beam. The purpose is to:

[0009]

According to the present invention, there is provided a connecting device for connecting PC concrete piles to each other, wherein a plurality of holes for retaining the PC steel bars in a retaining manner and a tension member for applying tension to the PC steel bars are attached. Having a plurality of screw holes,
End plates attached to both ends of the C concrete pile, connecting members having holes at both ends corresponding to the screw holes from which the tension members have been removed, and connecting the connecting members to the holes of the flange and the screws. And a screw member which is disposed between the PC concrete piles to be connected in alignment with the hole, screwed into the screw hole from the hole, and fixes the connecting member to the end plate.

The connecting member of the connecting device for connecting PC concrete piles according to the present invention is provided with a flange at both ends of a bar and a plurality of screw member insertion holes at substantially equal intervals in the flange. Things.

The connecting member of the connecting device for connecting PC concrete piles according to the present invention is provided with flanges at both ends of a bar having radial ribs, and a plurality of screw members provided at substantially equal intervals on the flange. An insertion hole is provided.

[0012] In addition, a connecting device for a PC concrete pile and a beam according to the present invention includes a plurality of holes for retaining the PC steel rod in a retaining manner and a plurality of screws for attaching a tension member for applying tension to the PC steel rod. End holes attached to both ends of the PC concrete pile, and holes matching the screw holes from which the tension members have been removed are respectively provided at the flange portions at both ends, and fixing member insertion holes are provided in the flange portions. And a connecting member having a plurality of beam connecting surfaces radially protrudingly formed, and a PC concrete pile to be connected by matching the hole of the flange portion with the screw hole, and disposing the screw hole from the hole. And a screw member for fixing the connection member to the end plate, a pair of connection plates for sandwiching a butted portion where the beam connection surface and the connection surface of the beam are abutted, and via the connection plate Fixing part that clamps and fixes the butted part It is those with a door.

The connecting member of the connecting device for connecting a PC concrete pile and a beam according to the present invention has flanges at both ends of a bar, and a plurality of screw member insertion holes at substantially equal intervals in the flange.
A plurality of beam connecting surfaces having fixing member insertion holes are formed so as to protrude radially.

In the connecting member of the connecting device for connecting a PC concrete pile and a beam according to the present invention, flanges are provided at both ends of a bar having radial ribs, and a plurality of screws are provided on the flange at substantially equal intervals. A plurality of beam connecting surfaces having a member insertion hole and a fixing member insertion hole are formed so as to protrude radially.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Embodiment 1 The present invention is characterized in that the threaded holes 6, 7 of the end plates 1, 2 from which the tension members 8, 9 are removed are used for connecting a PC concrete pile, and FIG. FIG. 2 is a front view showing a state in which a PC concrete pile is connected by applying the connecting device according to the first embodiment, FIG. 2 is an end plan view of PC concrete with a tension member attached, and FIG. FIG. 4 is a front view of a connecting member used in this connecting device. 1 to 4, the hole 4 (5) and the screw hole 6 (7) may be formed independently of each other, but the illustrated example is formed in a gourd shape continuously. The same parts as those in the conventional example shown in FIG. 10 are denoted by the same reference numerals, and redundant description will be omitted.

A connecting member 20 for connecting the PC concrete piles 101 is provided with flanges 23a and 23b at both ends of a bar 22 having ribs 21 radially.
23b, a plurality of screw member insertion holes 24a,
4b.

Next, the connecting operation of the PC concrete piles using the connecting member 20 will be described. First, one PC concrete pile 1 to be connected with the tension member 8 removed.
01, the screw insertion hole 24b is matched with the screw hole 6 from which the tension member 8 is removed, and the flange 2 of the connecting member is formed.
3b, the bolt 25 as a screw member passed through the screw member insertion hole 24b is screwed into the screw hole 6, and the flange portion 23b, that is, the connecting member 20 is connected to the PC concrete pile 1.
01 is attached to the end plate 1.

Next, the end plate 2 of the other PC concrete pile 101 to be connected is brought into contact with the screw hole 5 of the end plate 2 so as to coincide with the screw member insertion hole 24a of the other flange 23a of the connecting member 20. Then, a bolt 25 serving as a screw member passed through the screw member insertion hole 24a is screwed into the screw hole 7, and the connecting member 20 is attached to the end plate 2 of the PC concrete pile 101.
01 and 101 are connected.

As described above, according to the first embodiment, the connection member 20 is attached by using the screw holes 6 and 7 formed in the end plates 1 and 2 of the PC concrete pile 101, and the connection is performed. By connecting the PC concrete piles with the screw members via the member 20, the PC concrete piles can be extremely easily and firmly connected to each other by bolts without drilling and working a special screw hole. In addition, all the problems caused by welding can be solved by screw connection without using welding for connection between PC concrete piles.

Embodiment 2 FIG. 5 is a perspective view showing another configuration of the connecting member. The connecting member 20 shown in FIG. 4 uses a bar 22 having ribs 21 radially as a spacing member, but the connecting member 30 in the second embodiment uses a bar member 2 as a spacing member.
2 is provided with a rib 21 orthogonally. FIG.
As shown in (1), the ribs 32 may be provided with flanges 32a and 32b at both ends of the bar 31 without ribs, and the flange may be provided with a plurality of screw member insertion holes 33a and 33b at substantially equal intervals.

FIG. 7 is a perspective view of a connecting portion of the PC concrete pile 101 connected by using the connecting member 30 shown in FIG. 6, and the connecting method is the same as that of the first embodiment shown in FIG. Therefore, description of the connection operation is omitted.

As described above, in the second embodiment,
In particular, according to the configuration shown in FIG. 6, since the bar 31 that does not use a rib is used as the space holding portion of the connecting member 30,
Die removal during processing of the connecting member 30 is facilitated. In this case, a desired strength can be obtained by selecting the diameter of the bar 31 or the thickness of the bar 31 when the bar 31 is hollow.

Embodiment 3 FIG. 8 shows a plan view of a connecting member 40 used to connect a PC concrete pile and a beam. PC concrete piles 101 are provided at both ends of a bar 41 as a spacing member. The flanges 42a and 42b having substantially the same diameter are attached.
a, 42b, screw holes 6, 7 in end plate of PC concrete pile
A plurality of beam connecting surfaces 45a having screw through holes 43a, 43b to be coincident with each other and fixing member insertion holes 44a, 44b.
1 to 45a4 and 45b1 to 45b4 are radially projected from the flange.

Next, the connecting operation of the PC concrete pile and the beam using the connecting member 40 will be described. FIG. 9 is a longitudinal sectional view of a joint portion of a mixed structure composed of a PC concrete pile and a beam. The connection between the PC concrete piles is performed in the same manner as in the first embodiment.

Next, the flanges 42a, 42 of the connecting member 40
b, beam connection surfaces 45a1 to 45a4, 45 protrudingly formed
b1 to 45b4, a connecting surface 46 protruding from the end of the beam 45
a, 46b are butted, and the butted portion is sandwiched between a pair of connecting plates 50. Holes 47a formed in the connecting plates are used to form beam connecting surfaces 45a1 to 45a4, 45b1 to 45b4 and respective holes 44a of connecting surfaces 46a, 46b. , 44b and 48
a, a nut 52 is screwed into a bolt 51 passed through 48b, and the butted portion is connected and fixed.
The beam 17 is connected to and fixed to the PC concrete pile 101 via.

As described above, according to the third embodiment, the PC concrete piles and the steel beam 45 can be firmly connected to each other by the simple screwing work via the connecting member 40 without causing any axial displacement. It can be integrally fixed.

[0027]

As described above, according to the present invention, the PC
Since the PC concrete piles were connected to each other by the screw members via the connecting members using the screw holes for attaching the tension members drilled in the end plate of the concrete pile,
The PC concrete piles can be extremely easily and firmly connected to each other with a screw member without performing a special screw opening process, and there is an effect that all problems caused by welding can be solved.

Further, according to the present invention, the beams are connected to each other through the connecting members for connecting the PC concrete piles with the screw members by using the screw holes formed in the end plates of the PC concrete piles. , So with few members,
In addition, by the simple screwing work, there is an effect that the PC concrete piles and the steel beam can be firmly integrated and fixed without causing any axial deviation.

The connecting members for connecting the PC concrete piles and the PC concrete pile and the beam are provided with flange portions at both ends of the bar, and a plurality of screw member insertion holes are provided in the flange portions at substantially equal intervals. If provided, it is easy to remove the mold at the time of processing, provided flanges at both ends of a bar having radial ribs,
In the case where a plurality of fixing member insertion holes are provided at substantially equal intervals in the flange portion, the desired strength can be easily obtained by selecting the number, thickness, and the like of the ribs.

[Brief description of the drawings]

FIG. 1 is a front view showing a state where PC concrete piles are connected by applying a connecting device according to Embodiment 1 of the present invention.

FIG. 2 is an end plan view of a PC concrete pile before connection.

FIG. 3 is a cross-sectional plan view taken along the line AA in FIG.

FIG. 4 is a front view of a connecting member used in the connecting device.

FIG. 5 is a plan view of the connecting member.

FIG. 6 is a perspective view showing another configuration of the connecting member.

FIG. 7 is a perspective view of a connecting portion of the PC concrete pile connected using the connecting member.

FIG. 8 is a plan view of a connecting member used to connect a PC concrete pile and a beam.

FIG. 9 is a longitudinal sectional view of a joint portion of a mixed structure including a PC concrete pile and a beam.

FIG. 10 is a longitudinal sectional view showing a part of an upper part and a lower part of a PC concrete pile.

FIG. 11 is a perspective view showing a connection state between PC concrete piles.

FIG. 12 is a partial longitudinal sectional view showing another connection state between PC concrete piles.

[Explanation of symbols]

 1, 2 end plate 3 PC steel rod 4, 5 PC steel rod insertion hole 6, 7 Screw hole 8, 9 Tension member 20, 30, 40 Connecting member 21 Rib 22 Bar material 23a, 23b, 42a, 42b Flange portion 24a, 24b Screw member insertion hole 25 Bolt (screw member) 45 Beam 46 Connecting part 47a, 47b Bolt through hole 51 Bolt 52 Nut

Claims (6)

[Claims] 1. A PC concrete stake having a plurality of holes for retaining the PC steel rod in a retaining manner, and a plurality of screw holes for attaching a tension member for applying tension to the PC steel rod, and attached to both ends of a PC concrete pile. End plate, a connecting member having holes in the flanges at both ends corresponding to the screw holes from which the tension members have been removed, and connecting the connecting members so that the holes in the flange and the screw holes are aligned. A screw member disposed between the PC concrete piles to be screwed and screwed into the screw hole from the hole to fix the connecting member to the end plate.
Connection device for C concrete piles. 2. The PC according to claim 1, wherein the connecting member has a flange at both ends of the bar, and a plurality of screw member insertion holes at substantially equal intervals in the flange. Connecting device for concrete piles. 3. The connecting member according to claim 1, wherein flanges are provided at both ends of a rod material having radial ribs, and a plurality of screw member insertion holes are provided in the flange at substantially equal intervals. Item 1
The connecting device for PC concrete piles described in the above. 4. A PC concrete pile having a plurality of holes for retaining the PC steel rod in a retaining manner and a plurality of screw holes for attaching a tension member for applying tension to the PC steel rod. Attached end plates and holes corresponding to the screw holes from which the tension members have been removed are respectively provided at the flanges at both ends, and a plurality of beam connecting surfaces having fixing member insertion holes formed in the flanges radially projectingly formed. The connecting member, the hole of the flange portion and the screw hole are arranged between the PC concrete piles to be connected to be connected and screwed into the screw hole from the hole, and the connecting member is attached to the end plate. A screw member for fixing, a pair of connecting plates for holding a butted portion where the beam connecting surface and the connecting surface of the beam are butted, and a fixing member for holding and fixing the butted portion via the connecting plate. Of PC concrete pile and beam Coupling device. 5. The connecting member is provided with flanges at both ends of a bar, and the flange has a plurality of beam connecting surfaces having a plurality of screw member insertion holes and fixing member insertion holes at substantially equal intervals. 2. The connecting device for connecting a PC concrete pile and a beam according to claim 1, wherein the PC concrete pile and the beam are formed so as to protrude radially. 6. The connecting member has flanges provided at both ends of a rod material having radial ribs, and the flange has a plurality of screw member insertion holes and a plurality of fixing member insertion holes at substantially equal intervals. 2. A connecting device for connecting a PC concrete pile and a beam according to claim 1, wherein said beam connecting surface is formed so as to protrude radially.