KR100782007B1 - Construction method of a earth-protection walls - Google Patents

Abstract

A construction method of a retaining wall is provided to increase stiffness of a retaining wall and seepage cutoff effect and to construct a retaining wall easily by overlapping concrete columns continuously and simply. A construction method of a retaining wall comprises the steps of: perforating a construction hole on the ground using a punching machine and installing an outer casing(10) in the construction hole of the ground; installing a spacer(20) at one side of the outer casing installed in the construction hole and perforating a construction hole at the other side of the spacer, and installing another outer casing, and repeating the installation of spacers and outer casings; after arranging the outer casings on the ground at regular intervals and inserting primary inner casings(30) to the respective outer casings; pulling out the outer casing from the construction hole; perforating a construction hole between the primary inner casings using a punching machine and inserting an outer casing; installing a secondary inner casing(40) to the inside of the outer casing installed between the primary inner casings; pulling out the outer casing from the construction hole; installing stiffener to the inside of the primary and secondary inner casings to increase the stiffness of a retaining wall manufactured with concrete; placing concrete to the inside of the primary and secondary inner casings; pulling out the secondary inner casing from the construction hole before the concrete placed in the primary and secondary inner casings is cured; and pulling out the primary inner casing from the construction hole.

Description

Construction method of a earth-protection walls

1a to 1j is a plan view showing a construction method of the earth wall of the present invention

2A and 2B are plan views illustrating one embodiment of the present invention.

Figure 3 is an exploded perspective view showing a casing device for the construction of the wall of the inventors

4 to 7 is a schematic cross-sectional view showing another conventional soil wall construction method

* Description of the major symbols in the drawings *

1: Ground 10: Outer casing

20: spacing zone 30: inner casing

31: arc part 32: pour guide part

40: second inner casing 50: reinforcing material

60: concrete

The present invention relates to a soil wall construction method and a casing apparatus for the construction thereof, and more particularly, the concrete pillars are simply superimposed to increase the rigidity of the soil wall, and do not require construction of a separate water-repellent facility.

In general, the wall is a temporary structure that is installed to prevent the inflow of collapsed soil on the pit soil wall so that the underground construction can be safely and smoothly.

In other words, the earthen wall prevents soil from flowing out or collapses the ground during civil works, thereby enabling construction without damaging existing facilities such as adjacent buildings or roads.

The construction method of this wall is H pile soil wall method, C.I.P (Cast-In-Placed Concrete Pile) method, H pile earth wall method using SCW (SOIL CEMENT WALL) combined, underground continuous wall method.

As shown in FIG. 4, the H pile earth wall method is installed by directly hitting the H pile 2 on the ground 1 or by inserting a hole for installing the pile into the ground with a perforator. The plate 3 is inserted to form an earthen wall.

In this CIP (Cast-In-Placed Concrete Pile) method, as shown in Fig. 5, after drilling the ground to a certain depth by using an excavation equipment, the cylindrical casing (4) is installed in the perforated vertical hole, and then the cylindrical Filling the casing 4 with reinforcing bars, H piles, coarse aggregates, and the like, the concrete 60 is formed to form concrete pillars, and the construction is continuously carried out with the outer circumferential surfaces in contact with each other.

In addition, the H pile earth wall construction for SCW (SOIL CEMENT WALL) is installed by directly hitting the H pile 2 as shown in FIG. 6, while the H pile 2 is installed as close as possible and the earth plate is installed. After the stabilizer injection hole 5 is drilled on the back of the H pile 2, the stabilizer made by mixing soil or cement is infused and solidified. The main heating wall continuous in the ground and the wall of the H pile and the earth plate It is formed in a double.

Underground continuous wall method is to excavate the ground (1) using a rotary excavation equipment as shown in Figure 7 to insert the reinforcing steel mesh assembled on the ground and to cast concrete to form a main heating wall (6) in the ground .

In addition, the patent registration No. 0375020 'cylinder installation cylinder cylinder and earthquake installation method using the same' using a conventional excavation drilling machine to drill a cylindrical cylinder installation hole vertically on the ground, and one side of the cylinder pillar with an inscribed surface Insertion and fixation by means of installation, but the inner circumferential surface is directed toward the direction of progress, and when the cylinder pillars are continuously installed more than a predetermined number of times, the cylinder cylinder located at the best position is drawn out sequentially whenever the cylinder pillars are installed. The method of constructing the wall of the wall by inserting the sheet piles to be connected to each other in the cylindrical column installation hole has been proposed.

However, the conventional soil wall construction method can be expected to play a role as the earth wall in the case of the H pile earth wall method, but in terms of soil conditions, the flooding phenomenon occurs, the order effect can not be expected and requires a separate water-supply facility, The displacement of the head and the head is relatively large and there is a problem that the loosening phenomenon of the back ground becomes large.

In the C.I.P (Cast-In-Placed Concrete Pile) method, there was a problem in that the construction of the drainage facility had to be re-built due to the leaking phenomenon between the cylindrical concrete columns and the pillars.

In addition, the H pile earth wall method for SCW (SOIL CEMENT WALL) is formed with double main heat walls in the wall and the ground, so the effect is excellent, but the construction process is double, and the noise is extremely severe and large in construction. Since equipment has to be installed, it requires a lot of cost, and there is a closed end that the air is long due to low construction efficiency.

Underground continuous wall method requires pumbilical management at the connection part of the wall, wide site according to the equipment work, expensive construction cost, and thorough construction management.

Patent registration No. 0375020, 'cylindrical cylinder for soil film installation and earthquake installation method using the same' is to form a vertical wall by forming a continuous vertical hole with a cylindrical cylinder whose surface is an inward arc surface, and inserting a sheet pile into the continuous vertical hole to form an earth wall. Inserted sheet piles alone had weak stiffness and low order performance.

An object of the present invention is to improve the CIP method by simply overlapping the concrete pillars to be constructed by the CIP method to increase the stiffness and ordering effect by constructing the earth wall, to provide an easy earth wall wall construction method have.

delete

The object of the present invention is a first casing for inserting the outer casing by inserting the outer casing having a longitudinally penetrating body into the construction hole while forming the construction hole with a drilling device in the ground, and the outside inserted into the ground The second casing is inserted into the outer casing, and the second casing is inserted into the outer casing, and the outer casing is inserted into the outer casing. A first inner casing insertion step of inserting a first inner casing having an arc portion recessed inwardly to the side; a first separation step of removing the outer casing from the construction hole and removing the outer casing; and a perforation between the first inner casing. The outer casing is inserted so as to be in contact with the inner circumferential surface on both sides of the first inner casing while forming the construction hole by the device. The outer casing is inserted into the outer casing third inserting step, the second inner casing inserting step of inserting the second inner casing at intervals inside the outer casing, and the outer casing inserted in the outer casing third inserting step at the construction holes. A second separation step of removing and removing the outer casing; a concrete placing step of placing concrete on the first inner casing and the second inner casing; and a second inner casing being removed from the construction hole and supplemented with concrete. A second inner casing separation step for pouring and a first inner casing separation step for replenishing and pouring concrete therein while removing and removing the first inner casing from the construction hole are achieved.

Casing device for earth wall construction, which is inserted and installed in a construction hole drilled by a drilling device for such construction, has an outer casing formed in a tubular shape of a cylinder penetrating in the longitudinal direction, and arcs corresponding to the outer circumferential surface of the outer casing on both sides. A casing insertion circular groove having a groove is formed, and a gap retaining body having a gap supporting body for maintaining a gap therebetween is formed, and an arc is formed on both sides in a tubular shape of a cylinder which has a diameter smaller than that of the outer casing. The first inner casing is provided with an arc portion formed to be dug into the groove, and the second inner casing is formed in the tubular shape of the cylindrical through the longitudinal direction having a diameter smaller than the outer casing.

That is, after the concrete is poured into the first and second inner casings, the second inner casing and the first inner casing are removed and removed while the poured concrete is connected to each other in the connected construction holes to be cured, thereby constructing the earth wall.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

1A to 1J are plan views illustrating the construction of the wall of the present invention according to the present invention, wherein the outer casing first insertion step, the outer casing second insertion step, the first inner casing insertion step, the outer casing first separation step, and the outer casing third method are shown. The inserting step, the second inner casing insertion step, the outer casing second separation step, the reinforcing material insertion step, the concrete placing step, the second inner casing separation step, and the first inner casing separation step are shown in plan view.

Figure 2a to 2b is a plan view showing an embodiment of the present invention, Figure 2a shows the construction of the retaining wall using the H pile as a reinforcement inserted into the concrete pillar and Figure 2b is a reinforcement inserted into the concrete pillar The example shows the use of rebar and H pile together.

Fig. 3 is an exploded perspective view showing a casing device for constructing an earth wall in accordance with the present invention, and shows an outer casing, a spacing bracket, and first and second inner casings.

Hereinafter, the outer casing 10 of the casing device for earth wall construction used in the present invention, as shown in Figure 3 is formed of a circular tube penetrates in the longitudinal direction and is drilled in the ground (1) by a drilling device It is formed to have a length longer than the depth of the hole (1a).

The outer casing 10 has a first inner casing 30 or an outer casing provided with circular arcs 31 formed on both sides thereof with arcs corresponding to the outer circumferential surface of the outer casing 10. A second inner casing 40 formed of a circular tube having a diameter smaller than 10 is inserted.

The first inner casing 30 is formed of a cylindrical tube having a diameter smaller than that of the outer casing 10, and arc portions 31 formed on both sides are formed of circular arcs corresponding to the outer circumferential surface of the outer casing 10. It comes in close contact with the outer circumferential surface of the outer casing 10.

The first inner casing 30 has an outer casing 10 inserted into the construction hole 1a drilled into the ground 1 at a predetermined interval through the outer casing first insertion step and the outer casing second insertion step to be described later. In this case, the outer circumferential surface is inserted into the center of the outer casing 10 so as to have a predetermined distance from the inner circumferential surface of the outer casing 10.

In addition, the first inner casing 30 has a guiding portion 32 which forms a wedge groove 32a inward in the center of the arc portion 31 and protrudes inward.

In addition, the second inner casing 40 is formed to have a diameter smaller than that of the outer casing 10 and the same diameter as the first inner casing 30, and the first inner casing 30 by the third casing insertion process. It is inserted into the outer casing 10 inserted between the installation.

The spacing holding portion 20 is the outer casing 10 is installed on the ground 1 at a predetermined interval and the outer body portion 21 to maintain the spacing and the outer casing on both sides of the spacing body portion 21 ( A casing insertion arc groove 22 formed by an arc corresponding to the outer circumferential surface of 10) is formed.

The spacing holder 20 inserts the casing insertion arc groove 22 on one side into the outer circumferential surface of the outer casing 10 inserted into the construction hole 1a of the ground 1 and the casing insertion arc groove 22 on the opposite side thereof. While drilling the construction hole (1a) in the ground (1) to guide the fabric mill so that the outer casing 10 is inserted into the installation hole (1a).

The interval body portion 21 of the gap retention zone 20 is disposed between the outer casing 10 between the first inner casing 30 inserted into the outer casing 10 installed at intervals to the gap retention zone 20. ) Is inserted so that both sides are in close contact with the circular arc portion 31 of the first inner casing 30 to have a width in contact.

The present invention wall construction method using the outer casing 10, the first inner casing 30, the second inner casing 40, the spacing retention zone 20 will be described in detail as follows.

As shown in FIG. 1A, the outer casing first insertion step and the outer casing second insertion step are continuously performed, and after the outer casing first and second insertion steps, the outer casing 10 is spaced at a predetermined interval. It is inserted into and installed in the construction hole 1a inside.

Prior to the outer casing first inserting step, the outer casing first inserting step and the outer casing second inserting step are guided to be uniform in a straight line, and the punching position of the punching device is guided to maintain the verticality of the construction hole 1a. It is preferable to perform the drilling guide means installation step.

The drilling guide means has a guide file or a guide beam, and guides the drilling position of the construction hole 1a into which the outer casing 10 is inserted, so that the outer casing first insertion step and the outer casing second insertion step can be easily performed. To ensure that

This outer casing first insertion step is a process in which an outer casing 10 made of a cylindrical tube penetrated in the longitudinal direction is inserted into a construction hole 1a which is drilled into the ground 1 by a drilling device. It is based on the fact that the outer casing 10 is inserted and installed at the same time while the construction hole 1a is drilled in (1), and the outer casing 10 may be inserted and installed after the construction hole 1a is perforated.

The second casing insertion step is a first insertion step of the outer casing, and after the gap holder 20 is installed on one side of the outer casing 10 inserted into the construction hole 1a, the second casing is inserted into the other side of the gap holder 20. It inserts and installs the outer casing 10 while forming the construction hole 1a with a punching device.

That is, when the installation is completed to one side of the outer casing 10, which is one outer casing 10 is a reference, the gap retention zone 20 is separated between the installed outer casing 10 and newly inserted into the ground 1. After installing the spacing retainer 20 to one side of the installed outer casing 10, the outer casing 10 is repeatedly inserted into the other side of the spacing retainer 20 by forming a drilling hole 1a with a drilling device. It is.

The outer casing 10 is inserted into the ground 1 at regular intervals and arranged in a row at a predetermined interval over the entire portion where the wall of the earth is constructed by the first and second outer casing insertion processes. Will be done.

The outer casing is arranged in a row at a predetermined interval through the second inserting process, and then the first inner casing 30 is inserted into the inner casing through the first inner casing inserting process.

This first inner casing 30 is inserted in the center of the outer casing 10, as shown in Figure 1b is positioned to have a constant distance between the outer peripheral surface and the inner peripheral surface of the outer casing 10.

After inserting and installing the first inner casing 30 into each outer casing 10 by the first inner casing inserting process, the outer casing 10 is removed from the construction hole 1a by the outer casing first separation process, and then separated. The casing is reused in the third insertion process.

After the first casing separation process, the outer casing 10 is removed from the construction hole 1a, and only the first inner casing 30 is inserted and installed as shown in FIG. 1C. The casing 30 has a gap in which the outer casing 10 separated therebetween can be reinserted and installed.

Outer casing After the first separation process, as shown in FIG. 1D, the outer casing 10 is inserted and installed while drilling the construction hole 1a with the drilling device between the first inner casing 30 in the third casing insertion process. do.

In this case, the outer casing 10 is guided and installed while both sides are in close contact with the circular arc portion 31 of the first inner casing 30. The outer casing 10 may be inserted and installed at the same time while drilling the construction hole 1a with a drilling device. It is also possible to insert and install the drill hole (1a) with a punching device.

The second inner casing 40 is inserted into and installed inside the outer casing 10 which is inserted into and installed between the first inner casing 30 in the second inner casing insertion step after the third casing insertion step.

This second inner casing 40 is installed in the center of the outer casing 10, as shown in Figure 1e is positioned so as to maintain a constant distance from the outer peripheral surface and the inner peripheral surface of the outer casing 10.

After the second inner casing insertion step, the outer casing 10 inserted and installed between the second inner casing 40 through the second casing separation step is removed from the construction hole 1a and separated.

When the outer casing 10 is removed from the construction hole 1a by the second casing separation process, as shown in FIG. 1F, the construction holes drilled into the ground 1 by the first, second and third external casing insertion processes ( 1a) both sides are partially overlapped to communicate with each other, and the first inner casing 30 and the second inner casing 40 are alternately inserted into and installed in each of the construction holes 1a.

The first inner casing 30 and the second inner casing 40 are positioned within the construction holes 1a at regular intervals, and are also spaced apart from the inner circumferential surface of the construction holes 1a.

The reinforcement inserting step of inserting the reinforcing material 50 for reinforcing the rigidity of the retaining wall made of concrete 60 is performed in the first inner casing 30 and the second inner casing 40.

As shown in FIG. 1G, the reinforcing material 50 used in the reinforcing material insertion process uses a plurality of reinforcing bars 51 at intervals between the first inner casing 30 and the second inner casing 40 by using the reinforcing bar 51. It is based on inserting, and other pile members such as H piles and I piles may be used. Others may be used to increase the durability of the concrete wall by reinforcing the rigidity of concrete 60. It is possible that this is included in the configuration of the present invention.

After the reinforcing material insertion process, the concrete 60 is poured into the first inner casing 30 and the second inner casing 40 by the concrete pouring process, and the first inner casing 30 and the first inner casing 30 are made as shown in FIG. 1H. 2 inside the inner casing is to be filled with concrete (60).

Then, before curing the concrete 60 poured into the first inner casing 30 and the second inner casing 40, the second inner casing 40 is removed from the construction hole 1a by the second inner casing separation process. To separate.

When the second inner casing 40 is removed from the construction hole 1a by the second inner casing separation process, the concrete 60 poured into the second inner casing 40 gradually diffuses as shown in FIG. 1I. The second inner casing 40 is filled in the gap generated outside the first inner casing 30 is in close contact with the circular arc portion 31, a portion of which is also filled in the wedge groove 32a of the circular arc portion 31 .

Since the concrete 60 poured into the second inner casing 40 in the second inner casing separation process is filled in the gap generated outside the second inner casing 40, the amount of concrete 60 filled in the gap is filled. It is supplemented and poured.

Immediately after the second inner casing separation step, the first inner casing 30 is pulled out from the construction hole 1a and separated by the first inner casing separation step.

When the first inner casing 30 is removed from the construction hole 1a, the concrete 60 poured into the first inner casing 30 is diffused to fill the gap generated outside the first inner casing 30. The second inner casing 40 is removed while being diffused and mixed with the concrete 60 in close contact with the arc portion 31 of the first inner casing 30.

In this case, the concrete 60 poured into the inside of the second inner casing 40 is introduced into the center of the concrete 60 poured into the first inner casing 30 through the wedge grooves 32a, and gradually mixed naturally. Will be.

In addition, since the concrete 60 poured into the first inner casing 30 in the first inner casing separation process is filled in the gap generated outside the first inner casing 30, the amount of concrete 60 filled in the gap is filled. It is supplemented and poured.

After the first inner casing separation process, the concrete 60 poured into the construction hole 1a forms an earth wall in a state in which a predetermined portion overlaps and is connected to each other as shown in FIG. 1J.

In the reinforcement inserting process, the cross section of the retaining wall used by inserting the pile member 52 such as the H pile or the I pile into the first inner casing 30 and the second inner casing 40 using the reinforcing member 50 is shown in FIG. 2A. As shown.

In addition, the cross section of the retaining wall reinforced with the rigidity of the concrete 60 by using the pile member 52 and the reinforcing bar 51 together in the reinforcing material insertion process is shown in Figure 2b.

According to the configuration of the present invention as described above, because the concrete pillars constructed by the C.I.P method is connected to each other overlapping to form the earthen wall to increase the durability and the degree of ordering, there is an effect that does not need to install a separate ordering facility.

In addition, by improving the existing C.I.P construction method by partially overlapping the concrete pillars, the construction process is simple, so the construction cost is low and the construction period is shortened.

By combining and separating the outer casing and the first and second inner casings, the concrete pillars are naturally connected and cured in an overlapping state, thereby increasing durability of the concrete connection part of the retaining wall and allowing the retaining wall to be formed as a single concrete wall. will be.

Claims (4)

An outer casing first insertion step of inserting and installing an outer casing 10 having a body that is longitudinally penetrated into the construction hole 1a while forming the construction hole 1a with a drilling device in the ground 1; An outer casing 20 is installed on one side of the outer casing 10 inserted into the ground 1, and the outer casing is formed by drilling a construction hole 1a with a punching device on the other side of the outer casing 20. An outer casing second insertion step of repeating insertion and installation of (10); A first inner casing insertion step of inserting a first inner casing (30) having an arc portion (31) recessed in both sides in the outer casing (10); A first separation step of removing the outer casing 10 from the construction hole 1a to remove the outer casing; An outer casing which inserts and installs the outer casing 10 so as to be in contact with the inner circumferential surface on both sides of the first inner casing 30 while forming a construction hole 1a with a drilling device between the first inner casing 30. A third insertion step; A second inner casing insertion step of inserting the second inner casing 40 at intervals inside the outer casing 10; An outer casing second separation step of removing and removing the outer casing 10 inserted in the outer casing third insertion step from the construction hole 1a; A concrete placing process of placing concrete 60 on the first inner casing 30 and the second inner casing 40, respectively; A second inner casing separation step of replenishing and pouring concrete 60 therein while removing and removing the second inner casing 40 from the construction hole 1a; Separation wall construction method characterized in that the first inner casing separation step of removing and removing the first inner casing (30) from the construction hole (1a) while replenishing and placing concrete 60 therein. The method according to claim 1, Reinforcement wall construction method characterized in that the reinforcing material insertion step of inserting the reinforcing material 50 to reinforce the rigidity of the concrete (60) between the second casing separation process and the concrete placing process. delete delete

Images