KR101899859B1 - Temporary retaining wall structure - Google Patents

Abstract

Disclosed is a temporary retaining wall structure. The temporary retaining wall structure to be constructed in a complex excavation area having a bent place comprises: a plurality of H piles buried in the ground to be spaced apart from each other at predetermined intervals along a boundary of the excavation area, and having a web formed at the center and a pair of flanges formed at both sides of the web in a vertical direction; a plurality of earth plates inserted between the plurality of H piles to be put on another; a plurality of support brackets mounted to be spaced apart from the flanges of the H piles buried at the bent place in a longitudinal direction of the web, and having a ′⌝′-shaped or ′⌞′-shaped cross section; a plurality of connection pipes inserted and arranged between the flanges of the H piles and the support brackets to be supported by the flanges and the support brackets, wherein the earth plates are inserted and combined into the connection pipes in a sliding manner; and a connection unit having connection brackets for connecting both ends of the connection pipe with each other so that insertion holes of the plurality of connection pipes are aligned on the same line.

Description

{TEMPORARY RETAINING WALL STRUCTURE}

The present invention relates to a temporary earth retaining structure, and more particularly, to a temporary earth retaining structure that is easy to install and apply to a complex type terraced area where a bending point is formed.

In general, as part of the foundation work in performing buildings and other works, the earthworks work and excavation work are alternately performed.

Known piling methods include H pile wall method, Sheet pile method, SMP method, CIP method, SCW method and so on.

H pile wall construction method is a general construction method which is a method of forming a wall by inserting a H file at regular intervals and inserting a plate into a H file while advancing a tile and a sheet pile method is a method of forming a wedge shaped steel file The SMP method is a non-vibration, noiseless, self-sustaining system that can be used in port structures and earth structures, and is reusable and environmentally friendly. It is possible to construct without any ground conditions by hydraulic indentation method which presses file or H file. It is possible to construct more precisely than general construction method and it is a construction method with high speed. CIP method is less in noise and dust generation during construction The equipment is small and easy to handle, but the gravel and rock layers are difficult to perforate. And a difficult management method, SCW method can solve the problem and this problem of chasubyeok installation according to the excavation during construction toryubyeok in soft ground, the method being urban underground earth retaining Ltd. When used primarily.

In the conventional conventional soil-retaining work by H-file wall construction method, H files are installed on the ground at regular intervals along the boundary of the ter- minator area, and a retaining structure is installed by sandwiching a timber between the H files. It is based on the method of filling the soil.

On the other hand, in the case where the earthquake structure is a complex shape of a polygonal or irregular structure that is not a rectangle or a square, a bending point is provided so that an angle is formed between adjacent soil plates.

More specifically, in the case where the boundary region S has a complex shape as shown in FIG. 1, various types of bending points a to d are formed. At this time, as one of the methods of installing the soil plate at the bending points (a to d), there is a method of installing the soil plate 20 after installing only one H file 10 as shown in FIG. However, if the soil plate 20 is installed through one H file 10 at the bending points a to d as described above, both ends of the soil plate 20, as in point A in Fig. 2, The space S1 is formed between the flange 12 and the current plate 20 so that the flange 12 and the end plate of the current plate are in line contact without surface contact. That is, the soil plate 20 provided on the H-file 10 in the same horizontal line in the left and right direction is in surface contact with the inside of the flange 12 to support the earth pressure, The dust plate 20 installed in the H file 10 is provided in a line contact with the flange 12 so that a concentrated load is applied to a point where the flange 12 and the dust plate 20 make a line contact when a load is generated according to the earth pressure Compared with a state in which both ends of the current plate 20 are in surface contact with the flange 12, the current plate 20 is damaged.

As another method of installing the soil board at the bending points a to d, the interval of the H files 10 installed at the bending points a to d is set to be longer than the interval of the H files 10 installed in a straight line And the both end portions of the soil plate 20 are arranged so as to extend over the flange 12, as shown in Fig. This method is advantageous in that no space is formed between the flange 12 of the H file 10 and the opposite end of the current plate 20, as shown in Fig. However, since the contact area between the flange 12 and the current plate 20 is small, there is a problem that the current plate 20 is detached from the H file 10 as shown in the photograph of FIG. 4 when a load is generated by the earth pressure .

Recently, in order to solve the above-mentioned problem, a plurality of H files 10 are inserted into the ground at angled points at the bending points a to d, and then the soil plate 20 is installed A method was proposed. However, in the method of forming a plurality of H files 10 at the bending points a to d, the both ends of the flange 12 and the soil plate 20 are in contact with each other to secure the supporting force of the soil plate 20 according to the earth pressure However, there is a problem in that the number of H files 10 to be installed on the ground increases, the number of H files 10 to be installed on the ground increases, and the H files 10 formed at the bending points a to d are adjacent to each other, It is not used in actual construction site because it is troublesome due to the high degree of difficulty of operation.

Korean Patent No. 10-1384753 (published Oct. 18, 2013)

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a clutter structure in which a clutching point is formed, To provide the same supporting force as that in which both ends of the flange are in surface contact with each other, and to form bending points at various angles.

According to an embodiment of the present invention, there is provided a temporary earth retaining structure for installation in a complex terraced area in which a bending point is formed, wherein a boundary of the terraced area is embedded at a predetermined distance in the ground along a point, And a plurality of H files formed by a pair of flanges formed in a direction perpendicular to both sides of the web; A plurality of soil plates inserted and laminated between the plurality of H files; A plurality of support brackets spaced apart from the flange of the H file embedded at the bending point and spaced apart along the longitudinal direction of the web and having a cross section of 'a' or 'b'; A plurality of connection pipes inserted in a space formed between the flange of the H file and the support bracket embedded in the bending point and supported by the flange and the support bracket of the H file and guiding the stack of the slide plates inserted and stacked; And a connecting bracket configured to interconnect both ends of the connecting pipe so that the plurality of connecting pipes are aligned and connected to each other, wherein the connecting pipe has a hollow pipe structure having a circular cross section, A pair of support portions formed on the inside of the insertion hole at an interval equal to the width of the insertion hole and in surface contact with both ends of the current plate inserted through the insertion hole, An installation hole formed at one end of the connection pipe for fixing the connection bracket, And an alignment hole formed at the other end side of the connection pipe for inserting a part of the connection bracket, wherein the connection bracket has an outer flange, which is processed to have a curvature so that the inner surface can be brought into close contact with the outer surface of the connection pipe, An inner flange formed to be smaller in size than the outer flange and having a curvature such that an outer surface of the outer flange can closely contact the inner surface of the connecting pipe; A center flange connecting the flanges, and an extension flange extended from the upper side of the outer flange at a curvature corresponding to the outer flange, A retaining structure may be provided.

The present invention provides a temporary cladding structure in which the both ends of the soil plate are in surface contact with each other even when a soil plate is installed using only one H file at the bending point at the time of installation of the cladding structure in a complex trench area where bending points are formed So that it is possible to form bending points at various angles.

In addition, compared with the conventional method in which a plurality of H files for forming the bending point are installed, there is no problem of increasing the necessary materials and workload for installing the retaining structure, Since the degree of difficulty is not high, the applicability and practicality in actual construction can be excellent.

FIG. 1 is an exemplary view showing a complex type teraclizer region.
FIGS. 2 and 3 are views showing an installation mode of a retention structure at a bending point using one H file as an example of the prior art.
FIG. 4 is a photograph showing a case where the soil plate is detached in a state where the soil retaining structure is installed at the bending point as shown in FIG. 3 as an example of the prior art.
FIG. 5 is a view showing an installation form of a retention structure at a bending point using a plurality of H files as another example of the related art.
FIG. 6 is a perspective view of a temporary earth retaining structure according to the present invention. FIG.
7 is an exploded perspective view showing a part of a temporary earth retaining structure according to the present invention.
8 is a view for explaining the connection process of the connection pipe through the connection bracket of the temporary earth retaining structure according to the present invention.
9 and 10 are views for explaining various installation examples of the temporary earth retaining structure according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following detailed description of the operation principle of the preferred embodiment of the present invention, if it is determined that a detailed description of known functions or configurations related to the related art may unnecessarily obscure the gist of the present invention, do. In addition, the same or corresponding components or regions as those of the prior art are given the same reference numerals to facilitate understanding.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals refer to like elements throughout.

FIG. 6 is a perspective view of a temporary earth retaining structure according to the present invention. FIG. 7 is an exploded perspective view showing a part of a temporary earth retaining structure according to the present invention.

6 and 7, the temporary retention structure 100 according to the embodiment of the present invention is installed in order to prevent the collapse of the earth and sand due to the concurrent operation with the foundation work for the construction and civil engineering works. The main object of the present invention is to provide a stationary earth retaining structure 100 in which the soil plate 20 is stably installed at the bending points a to d formed in a complex terraced area.

The hypothetical earth retaining structure 100 according to the present invention includes a plurality of H files 10, a plurality of soil plates 20, and a plurality of connection units 30.

 The H file 10 is typically used for installation of a general earth retaining structure 100 and includes a central web 11 and a pair of flanges 12 formed in a direction perpendicular to both sides of the web 11, . However, the support bracket 13 is additionally formed in the H file 10 installed at the bending points a to d.

The support brackets 13 are provided at predetermined intervals along the longitudinal direction of the center web 11 to support the connection unit 30 and are formed of steel angles having a cross section of 'a' or 'b'. The first surface 13a of the support bracket 13 is fixed to the web 11 and the second surface 13b perpendicular to the first surface 13a is disposed parallel to the flange 12, 11, the flange 12, and the support bracket 13, and the connection unit 30 is inserted and arranged in such a space so as to be in contact with the second surface of the flange and the support bracket.

The supporting bracket 13 has a first surface 13a which is fixed to the web 11 and has a free length and a coupling hole for engaging with the web 11 through a coupling member such as a bolt is formed And the second surface 13b are preferably formed in a range exceeding a half of the diameter of the connecting pipe 31 constituting the connecting unit 30, Lt; / RTI > The limitation of the length of the second surface 13b is that it is difficult to stably support the connecting pipe 31 when the length of the second surface 13b is 1/2 or less of the diameter of the connecting pipe 31, 31, the angular range in which the current plate 20 connected to the connection pipe 31 can be installed is narrowed, so that it is not easy to form the bending points a to d. The second surface 13b may be formed to be inclined at a predetermined angle in the direction of the flange 12 forming the space portion so that the connecting pipe 31 located in the space portion is fixed by the second surface 13b to a predetermined level And can be fixed.

The soil plate 20 is formed of wood and is used in a conventional earth retaining method, and a detailed description thereof will be omitted.

The connection unit 30 is formed between the flange 12 and the second surface 13b of the support bracket 13 installed in the H file 10 at the bending points a to d as described above Is arranged in the space in the longitudinal direction of the H file (10) and comprises a connecting pipe (31) and a connecting bracket (32).

The connection pipe 31 has a hollow pipe structure and is formed with an insertion hole 33 cut along the longitudinal direction at a width corresponding to the thickness of the current plate 20 and has the same width as the insertion hole 33 inside the insertion hole 33 And a pair of supporting portions 34 bent to be spaced can be formed. In this case, in the case where the support portion 34 is simply bent from the insertion hole 33, since the area of the support portion 34 may be limited, a support portion 34 is separately prepared to secure a larger area, (Not shown) of the support pipe 34. The support pipe 34 is connected to the inner circumferential surface of the connection pipe 31 facing the insertion hole 33 As shown in Fig. The current plate 20 inserted into the insertion hole 33 is stacked in the longitudinal direction of the connecting pipe 31 along the insertion hole 33 and both side ends of the current plate 20 inserted into the insertion hole 33 And is supported in face contact with the support portion 34. [

The connection pipe 31 may be divided into a plurality of parts, and the installation hole 35 and the alignment hole 36 are formed in the vicinity of both ends of the divided connection pipe 31, respectively.

The mounting hole 35 is formed at a lower side point of the connecting pipe 31 that stands up when the connecting pipe 31 is installed and is formed for installation of the connecting bracket 32. At this time, the connection bracket 32 may be attached to the mounting hole 35 by a separate fixing member such as a bolt B.

The alignment hole 36 is formed at a position on the upper end side of the connecting pipe 31 that stands up when the connecting pipe 31 is installed and is formed in the area where the inner flange 32a of the connecting bracket 32 can be inserted. And a moving hole 36b which communicates with one side of the insertion hole 36a and is cut horizontally by a predetermined length along the outer circumferential surface of the connection pipe 31. [

The connection bracket 32 is a member for aligning the positions of the insertion holes 33 and preventing the separation of the connection pipes 31 when the divided connection pipes 31 are installed, A center flange 32c connecting the inner flange 32a and the outer flange 32b and connecting the inner flange 32a and the outer flange 32b and an extending flange 32b extending upward from the outer flange 32b, 32d.

The inner flange 32a and the outer flange 32b are disposed on the inner side or the outer side of the connecting pipe 31 and the inner flange 32a disposed on the inner side of the connecting pipe 31, The inner flange 32a is formed so as to have a curvature such that the outer surface of the inner flange 32a can closely contact with the outer flange 32a of the connecting pipe 31. The outer flange 32b, As shown in Fig.

The inner flange 32a is formed to have a size (= ratio) that is smaller than the formation area of the outer flange 32b with a size corresponding to the insertion hole 36a. The inner flange 32a is biased toward the center of the outer flange 32b . The forming position of the inner flange 32a and the relative size of the inner flange 32a relative to the outer flange 32b can be changed by the alignment hole 36 formed in the connecting pipe 31 when the connecting pipe 21 is connected through the connecting bracket 32 Foreign matter such as soil can be prevented from flowing into the connection pipe 31 through the alignment hole 36 by covering the outer flange 32b. At this time, although not shown in detail, a packing member (not shown) may be additionally formed on the inner edge of the outer flange 32b to more effectively block foreign matter from flowing through the alignment hole 36. [

The width of the center flange 32c in the longitudinal direction corresponds to the width of the movement hole 36b constituting the alignment hole 36 and the width of the center flange 32c in the width direction corresponds to the thickness of the connection pipe 31 Like panel member having a curvature and a length corresponding to the outer diameter of the inner flange 32a. The center flange 32c is horizontally disposed between the inner flange 32a and the outer flange 32b and is slidable along the moving hole 36b when engaged with the moving hole 36b.

The extension flange 32d is formed to extend on the upper side of the outer flange 32b and is formed to have a curvature corresponding to the outer flange 32b and has a width smaller than the formation width of the outer flange 32b . Further, the extending flange 32d is divided so that a predetermined point is separated, and the divided point is connected to the hinge 32e so that the outer flange 32b is lifted outward. A fixing hole 32f is formed at a position corresponding to the mounting hole 35 on the upper side of the extending flange 32d.

The overall shape of the connecting bracket 32 is similar to that of the connecting pipe 31 so that the outer diameter of the connecting pipe 31 at the point where the connecting bracket 32 is formed as a whole is minimized can do. Although the connection bracket 32 is formed on one side of the insertion hole 33 in the present invention, the connection bracket 32 may be formed symmetrically with respect to the insertion hole 33 on both sides of the insertion hole 33, (32) can be selectively installed and applied.

8 is a view for explaining the connection process of the connection pipe through the connection bracket of the temporary earth retaining structure according to the present invention.

Referring to FIG. 9, the connection pipe 31 is connected to the connection pipe 31 via the connection bracket 32. First, as shown in FIG. 8 (a) And the connection bracket 32 is fixed to the lower end side of the base plate 31. At this time, the fixing of the connecting bracket 32 to the lower end of the connecting pipe 31a is performed by fixing the extending flange 32d of the connecting bracket 32 to the mounting hole 35 formed at the lower end side of the connecting pipe 31a, The fixing holes 32e of the connection pipe 31a are aligned with each other and then a fixing member such as a bolt B can be fixed to the fixing hole 32. The fixing of the connection bracket 32 can be performed each time the connection pipe 31a is connected, You can do it.

When the connecting bracket 32 is installed on the connecting pipe 31a as described above, the inner flange 32a of the connecting bracket 32 is located on the lower side of the lower end of the connecting pipe 31a, The lower end of the connecting pipe 31a may be completely deviated from the lower end of the connecting pipe 31a or may be placed in a partly overlapping position. (However, in the present invention, the outer flange 32b is out of the lower end of the connecting pipe 31a as a specific example for the purpose of understanding the invention)

8 (b), the insertion hole 36a of the lower connecting pipe 31b and the inner flange 32a of the connecting bracket 32 are mutually coincident with each other when the lower connecting pipe 31b is installed as shown in FIG. 8 (b) The upper connecting pipe 31a is lowered and the upper connecting pipe 31a is brought into contact with the upper surface of the lower connecting pipe 31b.

At this time, in the process of lowering the upper surface of the lower connecting pipe 31b and the lower surface of the upper connecting pipe 31a, the connecting bracket 32 interferes with the upper surface of the lower connecting pipe 31b. At this time, As the inner flange 32a and the outer flange 32b are lifted with respect to the point where the hinge 32e of the lower connecting pipe 31b and the connecting bracket 32d are connected to each other, Interference is avoided.

When the upper surface of the lower connecting pipe 31b and the lower surface of the upper connecting pipe 31a come into contact with each other, the inner flange 32a of the connecting bracket 32 contacts the outer surface of the lower connecting pipe 31b, The inner flange 32a is naturally inserted into the insertion hole 36a. On the other hand, when the inner flange 32a is simply inserted into the insertion hole 36a, the insertion holes 33 of the upper and lower connecting pipes 31a and 31b are not aligned.

8 (c), when the upper connecting pipe 31a is rotated (clockwise in the drawing), the center flange 32c of the connecting bracket 32 is moved along the moving hole 36b So that the center flange 32c can no longer move along the movement hole 36b. When the center flange 32c is no longer movable along the moving hole 36b, that is, when the upper connecting pipe 31a is rotated in the clockwise direction, the insertion holes (not shown) of the upper and lower connecting pipes 31a and 31b 33 are aligned and interconnected.

9 and 10 are views for explaining various installation examples of the temporary earth retaining structure according to the present invention.

Hereinafter, the installation of the temporary retention structure according to the present invention will be described with reference to FIGS.

9, in the installation of the temporary cladding structure 100, the H file 10a fixing the soil plate installed horizontally in the same line to install the soil plate 20 at the bending point, And the H formation files 10b and 10c for branch formation are installed. At this time, the support bracket 13 and the connection unit 30 are installed on the H files 10a, 10b, and 10c in order to install the dust plate 20 at the point where the bending point is formed. Thereafter, when installing the H file 10c for forming another bending point around the H file 10b forming the bending point, the installation range of the H file 10c can be widely formed. 9, the bending angle of the bending point may be widely varied. This is because the connecting pipe 31 of the connecting unit 30 has a circular cross-section in the space portion This is because the flange 11 always comes in contact with the flange 11 in a constant form even when it is rotated and rotated at the same time. Therefore, even when the position of the H file 10c changes from P1 to P3, both ends of the dust plate 10 can be stably supported on the flange 11 of the H file 10c through the connecting unit 30 .

10, even when the angle and direction of the bending point of the soil plate 20 provided by the connection unit 30 are variously formed at the bending point, both ends of the soil plate 20 and the H file 10 without causing a problem that the dust plate 20 is separated from the H file 10 because the space is not formed between the flanges of the dust plate 20 and the connecting pipe 31, Both ends of the current plate 20 are directly in surface contact with the flange 11 because the both ends thereof are always in surface contact with the supporting portion 34 of the connecting unit 30 supported in close contact with the flange 11, A bearing force can be realized.

In the installation of the earth retaining structure in the complex terraced area where the bending point is formed, the temporary earth retaining structure according to the present invention as described above is installed with the soil plate 20 using only one H file 10 at the bending point It is possible to form the bending points at various angles while simultaneously generating the same supporting force as that at both ends of the turntable plate 20 in surface contact with the flange.

Further, as compared with the case where a plurality of H files 10 are conventionally required, an additional H file having a large volume and a heavy weight to form a bending point is not required, and the work difficulty for forming the H file 10 at the bending point is high Therefore, the applicability and applicability in actual construction site can be excellent.

In addition, when the soil plate 20 is installed at the bending point, it can be installed by inserting the soil plate 20 into the connection unit 30 in a simple slide manner. In order to separate the connection pipes 31 at the time of disassembly, Since the connection pipes 31 can be separated by rotating them, the overall construction and disassembly are facilitated.

When the retaining structure is dismantled, the respective connecting pipes 31 are connected by the connecting bracket 32 and are not separated by the simple upward movement of the connecting pipe 31, When the connecting pipe is lifted and the connecting pipe 31 is collectively removed from the H file 10, the soil plate 20 is automatically dismantled, so that it is not necessary to remove the soil plate 20 one by one, 31) can be safely dismantled by the worker on the ground, so that it is possible to secure not only the efficiency of dismantling the structure but also safety of workers.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings, and all or some of the embodiments may be selectively combined so that various modifications may be made.

10: H File 20: Tourist board
30: connection unit
31, 31a, 31b: connection pipe 32: connection bracket
32a: Inner flange 32b: Outer flange
32c: Center flange 32d: Extension flange
32e: Hinge (hinge) 32f: Fixing hole
33: insertion hole 34: support
35: mounting hole 36: alignment hole

Claims (4)

In a temporary earth retaining structure for installation in a complex terraced area where a bending point is formed,
A plurality of H files embedded in the ground along the boundary of the terahertz region at a predetermined interval and formed of a pair of flanges formed in a direction perpendicular to both the center web and the web;
A plurality of soil plates inserted and laminated between the plurality of H files;
A plurality of support brackets spaced apart from the flange of the H file embedded at the bending point and spaced apart along the longitudinal direction of the web and having a cross section of 'a' or 'b';
A plurality of connection pipes inserted in a space formed between the flange of the H file and the support bracket embedded in the bending point and supported by the flange and the support bracket of the H file and guiding the stack of the slide plates inserted and stacked; And a connection bracket configured to interconnect both ends of the connection pipe so that the plurality of connection pipes are aligned and connected,
The connecting pipe includes:
A hollow pipe structure having a circular cross section and formed by cutting along the longitudinal direction at a width corresponding to the thickness of the soil plate;
A pair of supporting portions formed on the inner side of the insertion hole at an interval equal to the width of the insertion hole and in surface contact with both ends of the current plate inserted through the insertion hole,
A mounting hole formed at one end of the connecting pipe for mounting and fixing the connecting bracket,
An alignment hole formed at the other end side of the connection pipe for inserting a part of the connection bracket,
The connection bracket
An outer flange which is processed to have a curvature such that an inner surface of the outer flange is brought into close contact with an outer surface of the connecting pipe,
An inner flange formed to have a curvature such that an outer surface of the outer flange can closely contact the inner surface of the connecting pipe,
A center flange disposed horizontally between the outer flange and the inner flange and connecting the outer flange to the inner flange,
And an extension flange extending from an upper side of the outer flange with a curvature corresponding to the outer flange, the split flange being formed as a divided structure and having divided portions mutually hinged. The method according to claim 1,
The alignment holes
An insertion hole formed at an area where the inner flange can be inserted,
Wherein the center hole is formed in a width that allows the center flange to be inserted and slidable, and is divided into a moving hole formed by a predetermined lengthwise incision from one side of the insertion hole. The method according to claim 1,
Wherein the inner flange is formed to be biased toward one side of the center of the outer flange, and the outer flange is formed in an area that covers the insertion hole of the connection pipe so that the insertion holes of the connection pipes are aligned so as not to be exposed to the outside. Hypothetical retaining structures. The method according to claim 1,
In connection of the connecting pipe,
Each of the connecting pipes is erected in the vertical direction and the adjacent flanges of the connecting brackets are mutually abutted with each other, the inner flanges of the connecting brackets are inserted into the insertion holes and then moved along the moving holes, Wherein the alignment of the insertion holes is performed.

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