KR102153783B1 - Underground road using self-supporting pile wall with temporary wall - Google Patents

Abstract

The present invention is an underground road buried in the basement to provide a passage for people or vehicles to pass, and an outer wall that forms an outer wall surface by integrally connecting the steel pipe piles that are drilled and excavated underground; A connector installed by welding to a predetermined depth below the steel pipe piles and being sealed while being coupled to each other to block the inflow of groundwater; And upper and lower slabs formed by being connected to the outer wall forming the pair, wherein the coupling of the outer wall and the upper and lower slabs is fixed to the steel pipe pile by welding and has at least one connecting hole connecting the main reinforcing bar It is characterized in that the above-formed connection plate is fixed while being embedded in the upper and lower slabs.

Description

Underground road using self-supporting pile walls {UNDERGROUND ROAD USING SELF-SUPPORTING PILE WALL WITH TEMPORARY WALL}

The present invention relates to an underpass and its construction method, and more particularly, to a combined-walled underpass using a self-supporting pile wall for constructing an underpass with a temporary facility combined structure using self-standing piles, and a construction method thereof. .

Currently, the underground roadway being constructed in the city center is a U-shaped and box-shaped concrete structure, and the temporary installation method is used to construct the structure after installing temporary facilities in the section of the underpass. The size and type of temporary facilities are determined according to the soil conditions, and in areas with relatively good soil quality, the H-Pile + earth plate structure or sheet pile structure is mainly used as the earth wall, and the support of the earth wall is the support method or the earth anchor method. As an order method to block groundwater outflow, a method of performing order grouting using an LW system is used.

In addition, in the case of poor soil conditions or soft ground, the CIP method or the underground continuous wall (Diaphram Wall or Slurry Wall) may be used as a temporary facility method. As such, the temporary facility construction method mainly used in Korea has a problem of causing great inconvenience in transit traffic due to long-term traffic control, in addition to the need to secure safety during construction and deteriorate economic efficiency as it survives for a long time until the end of construction.

In addition, in recent years, it is difficult to apply the earth anchor method to the earth wall support method due to the interference of adjacent buildings, and as the support type is mainly used, the concrete constructability is greatly degraded due to the interference of the support beams, resulting in a problem of delay in air. to be.

In addition, a method of constructing an underground roadway using the CIP method for temporary facilities is proposed as a way to solve this problem.

According to the prior art in the construction of such an underpass, it is necessary to secure the quality of high-strength CIP concrete as the CIP method for temporary facilities is used as the body structure, and the excavation method is applied until the installation of the upper slab to It is necessary to secure slope safety, and because of the excavation, the width of road occupancy is increased compared to the existing construction method, so it is not very advantageous in terms of traffic handling than the existing construction method.

In addition, for the connection between the left and right sides and the central part of the CIP wall and the upper and lower slabs, a horizontal hole is installed by perforating the CIP wall, and a horizontal hole is installed at each location where the main reinforcing bar is installed. Construction is very cumbersome as it must be done, and it is not easy to secure rigidity due to the structural characteristics of the connection, so it is expected that structural damage may occur during public use, and the support beams installed inside must be constructed by manpower within a narrow space. As the CIP bulb is used as the inner wall, it is expected that the configuration management and the exposed surface are not smooth.

In addition, on soft ground with poor soil conditions, two or more rows of CIP must be installed due to groundwater leakage and deformation prevention, and the panel installed to maintain the flat surface of the outer wall is difficult to construct due to interference with the rebar inside the CIP. From the perspective of this, it is judged that it will not be advantageous in all aspects such as economy, construction time, construction, traffic treatment and waterproofing compared to the existing construction method.

Korean Patent Registration No. 10-1187369 (Name of invention: Underpass construction method using CIP)

Therefore, the present invention was conceived to solve the above problems, and the problem to be solved of the present invention is to use both the temporary facility and the structure body when constructing an underpass, while being more economical than the existing construction method, quality control, structural safety, and constructability. And it is to provide a combined-walled underpass and a construction method using a self-standing pile wall that can shorten the construction period and minimize traffic congestion.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those of ordinary skill in the technical field to which the present invention belongs from the following description. It will be understandable.

The present invention was created in order to improve the problems of the prior art as described above, as an underground road buried underground to provide a passage for people or vehicles to pass, by integrally connecting the steel pipe piles that are drilled and excavated underground. An outer wall forming a surface; A connector installed by welding to a predetermined depth below the steel pipe piles and being sealed while being coupled to each other to block the inflow of groundwater; And a lower slab connected to the pair of outer walls to form a bottom surface, wherein the combination of the outer wall and the lower slab is fixed to the steel pipe pile by welding and has at least one connecting hole connecting the main reinforcing bar The formed fixed connection plate may be fixed while being embedded in the end of the lower slab.

In addition, the connector, the first joint is formed to be bent protruding to a depth set in the vertical direction from a portion of the outer surface of the one side of the steel pipe pile; And a second joint piece formed on a part of the outer surface of the other side of the steel pipe pile in the same shape corresponding to the first joint piece and fitted to the first joint piece.

In addition, the connector may be welded while protruding in a vertical direction while the pair of first joints are spaced apart, and the second joint is inserted between the first joints.

In addition, in the connector, the first joint is formed in a cylindrical shape with a partially open shape, and the second joint is also manufactured in a circular shape with a partially open shape, so that the first joint and the second joint are opened. Can be combined through fitting.

In addition, in the connector, the first joint and the second joint are formed to protrude from the steel pipe piles in a straight shape, respectively, so that a portion of the end may be fitted.

In addition, in the connector, ends of the first joint and the second joint may be formed in a hook shape, so that they may be fitted while being engaged with each other.

In addition, it may further include a cap concrete installed on the upper end of the outer wall to distribute the external force acting on the outer wall horizontally.

In addition, when the exposed height of the outer wall is greater than or equal to the allowable displacement value in structural calculation, a transverse beam and an intermediate pillar for preventing displacement of the upper end of the outer wall by connecting the outer walls horizontally may be further included.

In addition, an upper slab manufactured in the same shape as the lower slab and coupled to the upper portion of the pair of outer walls; And an inner wall formed at an intermediate portion between the pair of outer walls and coupled to the upper and lower slabs to partition the space.

In addition, a fixing member installed on a portion of the steel pipe pile and coupled to the upper and lower slabs to fix the steel pipe pile to the upper and lower slabs; may further include.

In addition, the fixing member is fixed to the steel pipe pile by welding, in addition to the fixed connection plate type having at least one connection hole connecting the main reinforcing bars, a vertical steel plate installed on a part of the steel pipe pile and coupled to the upper and lower slabs; A horizontal steel plate coupled to the vertical steel plate and connecting the steel pipe piles to the upper and lower slabs; A fixing stud installed on the horizontal steel plate to fix the horizontal steel plate to the upper and lower slabs; And a stud connection fixing hardware which is welded to the steel pipe pile and connects the steel pipe pile to the fixed stud.

In addition, the stud connection fixing hardware may be coupled to the steel pipe pile by the vertical steel plate or the horizontal steel plate, or to the steel pipe pile through welding, thereby coupling the steel pipe pile to the upper and lower slabs.

In addition, the outer wall may form a finishing wall by pouring waterproof concrete on the front of the steel pipe piles for waterproofing, installing a waterproof sheet, and placing concrete on the front of the waterproof sheet.

In addition, the outer wall may be filled with concrete inside the steel pipe piles or reinforced with reinforced concrete to increase rigidity.

As a construction method for constructing a U-Type section of an underground road that is buried in the basement of the present invention to provide a passage through which people or vehicles can penetrate, the steel pipe pile is drilled after selecting the installation location of the steel pipe pile and installing the guide wall. The first step: a second step of rebuilding the steel pipe piles, pouring into filled concrete, and installing excavation and provisional drainage channels; A third step of pouring waterproof concrete on the front of the excavation, installing fixed connecting plates on the lower slab and the steel pipe pile, respectively, and reinforcing reinforcement to the lower slab and pouring concrete; A fourth step of installing a waterproof sheet on the front of the excavation and placing concrete after reinforcing the wall reinforcement; A fifth step of removing the guide wall and installing cap concrete on an upper end of the outer wall; And a sixth step of paving the underpass, painting the lane, and completing the protective railing after construction.

In addition, as a construction method of constructing a BOX-TYPE section, the first step of selecting an installation location of the steel pipe pile, installing a guide wall, and drilling a steel pipe pile of the outer wall and an intermediate pile for temporary facilities; A second step of erecting the steel pipe piles of the outer wall and the intermediate piles, and pouring the steel pipe piles of the outer wall with filling concrete; A third step of installing a traffic bypass on the upper road, installing an obstacle protection hole, and excavating to the upper slab installation surface; A temporary piece bracket for upper slab support is installed on the intermediate pile at the bottom of the upper slab installation surface, a fixed connection plate is installed on the steel pipe pile, and reinforcement is placed on the upper slab while connecting to the fixed connection plate and pouring concrete. The fourth step; A fifth step of removing and backfilling the struts and obstacle protection holes on the upper surface of the upper slab, removing some sections of the upper part of the steel pipe piles of the outer wall, restoring the upper road, and restoring traffic; A sixth step of excavating the inside of the underpass, installing a temporary drainage channel, and placing waterproof concrete in front of the steel pipe piles of the inner wall; A seventh step of installing a fixed connection plate on the steel pipe pile and the lower slab, respectively, constructing the lower slab and the inner wall, and installing the waterproof sheet on the front surface of the outer wall; An eighth step of dismantling the Piece Bracket and the intermediate pile, placing reinforcing bars on the outer wall, and placing concrete; And a ninth step of paving the underpass, painting the lane, and completing the construction of the protective railing.

According to an embodiment of the present invention, if an underground roadway is constructed using the SEP-Wall (Self-Supported Pile Wall) method that can be used as both a temporary facility and a structure body, it is possible to minimize the installation of temporary facilities and reduce the section of walls and lower slabs. Thus, it is possible to construct an economical underpass.

In addition, it is easy to secure safety during construction and public use and improve workability due to the combined wall structure.

In addition, workability is improved through simplification of the process, and the construction period can be greatly shortened.

In addition, it is possible to minimize traffic congestion during construction as the period of traffic control and blocking is short.

In addition, since most of the underground roadway construction is performed underground after the installation of the upper slab is completed, noise, vibration and environmental pollution during construction can be prevented.

In addition, it is advantageous for maintenance as it has excellent waterproofing performance with a three-stage waterproof structure of connectors, waterproof concrete and waterproof sheet, and finished concrete.

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. I will be able to.

The following drawings appended in the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention to be described later, so the present invention is described in such drawings. It is limited to and should not be interpreted.
1 is a conceptual diagram of a U-type section of an underpass using a self-standing pile wall according to an embodiment of the present invention.
2 is a conceptual diagram of a box-type section of the underpass.
3 is a cross-sectional view of the excavation section of the outer wall.
Figure 4 is a cross-sectional view of the pile embedding section of the outer wall.
5 is a view showing an example of a section in which the excavation height of the U-type section underpass satisfies an allowable displacement.
6 is a view showing an example of a section in which the excavation height of the U-type section underpass exceeds an allowable displacement.
7A to 7E are views illustrating the various connectors.
8 is a view showing the cap concrete.
9A to 9D are views showing a state in which the fixed connection plate is installed.
10A to 10C are views showing embodiments of fixing hardware for connecting studs of the fixing member.
11A to 11C are views showing examples of fixing studs of the fixing member that are fixed by the fixing studs.
12 is a view showing the waterproof system of the underground road.
13 is a construction flow chart of the U-type section underpass.
14 is a construction flow chart of the box-type section underpass.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be modified in various ways and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only those effects, the scope of the present invention should not be understood as being limited thereto.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when it is mentioned that a component is "directly connected" to another component, it should be understood that there is no other component in the middle. On the other hand, other expressions describing the relationship between the constituent elements, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" refer to specified features, numbers, steps, actions, components, parts, or It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in a commonly used dictionary should be interpreted as having the meaning of the related technology in context, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

1 is a conceptual diagram of a U-type section of an underpass using a self-standing pile wall according to an embodiment of the present invention, FIG. 2 is a conceptual diagram of a box-type section of the underpass, and FIG. 3 is a cross-sectional view of the excavation section of the outer wall 4 is a cross-sectional view of a pile embedding section of the outer wall, and FIG. 5 is a view showing an example of a section in which the excavation height of the U-type section underpass satisfies the allowable displacement, and FIG. 6 is the U-type section underpass It is a diagram showing an example of a section in which the excavation height of the furnace exceeds the allowable displacement, FIGS. 7A to 7E are views showing the appearance of the various connectors, FIG. 8 is a view showing the cap concrete, and FIGS. 9A to 9D Is a view showing the state in which the fixing connection plate is installed, FIGS. 10A to 10C are views showing an embodiment of the stud connection fixing hardware of the fixing member, and FIGS. 11A to 11C are the fixing of the fixing member fixed by the fixing stud. It is a view showing an embodiment of the studs, Figure 12 is a view showing the waterproof system of the underground road.

As shown in FIGS. 1 to 12, as an underground road that is buried underground to provide a passage for people or vehicles to pass, the underpass 10 of the present invention has some sections open at the top and retaining wall type with both side walls. It consists of a U-type section that is constructed as a and a box-type section that is closed while covering the top. First, the U-type underpass 10 of the present invention may include an outer wall 100, a connector 200, and a lower slab 300.

The outer wall 100 may form an outer wall surface by integrally connecting the steel pipe piles 20 that are perforated and excavated underground.

The connectors 200 are respectively installed by welding to a set depth below the steel pipe piles 20 and are sealed while being coupled to each other to block the inflow of groundwater. The connector 200 may include a first joint piece 210 and a second joint piece 220.

The first joint piece 210 may protrude from a portion of the outer surface of the steel pipe pile 20 on one side to a depth set in the vertical direction to be bent.

The second joint piece 220 may be formed on a part of the outer surface of the other steel pipe pile 20 in the same shape corresponding to the first joint piece 210 to be fitted to the first joint piece 210. The first and second joints 210 and 220 may be joined through welding while protruding from each other so that the bent portions are fitted.

In addition, the connector 200 protrudes in a vertical direction with a pair of the first joint pieces 210 spaced apart, and the second joint piece 220 is inserted between the first joint pieces 210 and is fitted. It can be produced in a shape that is.

In addition, the first joint piece 210 is a cylindrical shape that is open to a part, and the second joint piece 220 is also manufactured in a circular shape with an open shape in a part, so that the first joint piece 210 and the second joint piece 220 ) Can be manufactured in a shape that is fitted through an open part.

In addition, the first joint piece 210 and the second joint piece 220 are formed in a state protruding from the steel pipe pile in a straight shape, respectively, and are manufactured in a shape in which a part of each end is fitted, or the first joint piece 210 The ends of the and the second joint 220 may be formed in a hook shape, respectively, so that they may be manufactured in a shape that is fitted while being engaged with each other.

The lower slab 300 may be connected to the outer wall 100 forming a pair to form a bottom surface.

The combination of the outer wall 100 and the lower slab 300 is fixed to the steel pipe pile 20 by welding, and a fixed connection plate 90 having at least one connecting hole 91 connecting the main reinforcing bar formed thereon is the lower slab 300 It is fixed while being embedded at the end of the.

The U-type underpass 10 of the present invention may further include a cap concrete 400 and a transverse beam 500.

The cap concrete 400 is installed on the upper end of the outer wall 100 to distribute the external force acting on the outer wall 100 horizontally.

The transverse beam 500 may prevent displacement of the upper end of the outer wall 100 by connecting the outer walls 100 horizontally in a section in which the exposed height of the outer wall 100 exceeds the allowable displacement value in structural calculation.

In addition to the outer wall 100, the connector 200, and the lower slab 300, the U-type underpass 10 according to the present invention may further include an intermediate pillar for supporting a transverse beam.

The upper slab 310 of the box-type section of the underpass is manufactured in the same shape as the lower slab 300 and may be coupled to the upper part of the pair of outer walls 100.

The inner wall 110 is formed at an intermediate portion between the pair of outer walls 100 and is coupled to the upper and lower slabs 300 and 310 to partition the space.

The present invention underpass 10 may further include a fixing member 600.

The fixing member 600 may be installed on a portion of the steel pipe pile 20 and coupled to the upper and lower slabs 300 and 310 to fix the steel pipe pile 20 to the upper and lower slabs 300 and 310. The fixing member 600 may include a vertical steel plate 610, a horizontal steel plate 620, a fixing stud 630, and a stud connection fixing hardware 640.

The vertical steel plate 610 may be installed on a part of the steel pipe pile 20 and coupled to the upper and lower slabs 300 and 310.

While being coupled to the horizontal steel plate 620 and the vertical steel plate 610, the steel pipe piles 20 may be connected to the upper and lower slabs 300 and 310.

The fixing stud 630 is installed on the horizontal steel plate 620 to fix the horizontal steel plate 620 to the upper and lower slabs 300 and 310.

The stud connection fixing hardware 640 may be welded to the steel pipe pile 20 and connect the steel pipe pile 20 to the fixed stud 630. The stud connection fixing hardware 640 is coupled to the steel pipe pile 20 by a vertical steel plate 610 or a horizontal steel plate 620, or is coupled to the steel pipe pile 20 through welding, while the steel pipe pile 20 is attached to the upper and lower slabs. 300, 310). In addition, it may further include a joint plate manufactured in correspondence with the curved shape of the steel pipe pile 20 and coupled to the steel pipe pile 20 and the stud connection fixing hardware 640, respectively.

Specifically, for fixing the steel pipe piles 20 and the upper and lower slabs 300 and 310, the vertical and horizontal steel plates 610 and 620 are formed in a ㅍ shape, and the stud connection fixing hardware 640 is used as the steel pipe pile 20 After welding and fixing on a part of the lower part of the front, a fixing stud 630 for fixing with the upper and lower slabs 300 and 310 is installed on the horizontal steel plate 620 on the front side, and the upper and lower slabs 300 and 310 and the steel pipe pile The connection part of 20) can be made into a rigid structure.

The fixing stud 630 is installed on the horizontal steel plate 620 to fix the horizontal steel plate 620 to the upper and lower slabs 300 and 310. The fixing stud 630 may be manufactured in a straight type, a bent type, a closed type, etc. and may be embedded in the upper and lower slabs 300 and 310 to fix the steel pipe pile 20.

For the outer wall 100, a waterproof concrete 30 is poured in front of the steel pipe piles 20 for waterproofing, a waterproof sheet 50 is installed, and concrete is poured in the front of the waterproof sheet 50 to finish the wall 80 Can be formed.

In addition, the outer wall 100 may be filled with the inside of the steel pipe piles 20 or reinforced with reinforced concrete to increase rigidity.

Specifically, the steel pipe piles 20 of the outer wall 100 may serve as temporary facilities preventing the inflow of surrounding soil or groundwater during construction. The outer wall 100 may be fixed to the basement by performing grouting in the gap between the steel pipe pile 20 and the drilling diameter in the portion where the connector 200 is not installed on the steel pipe pile 20. . As described above, by waterproofing the outer wall 100 in triplicate, it is possible to more reliably order groundwater.

13 is a construction flow chart of the U-type underpass, and FIG. 14 is a construction flow chart of the box-type underpass.

13 to 14, as a construction method for constructing an underpass that is buried underground and provides a passage through which people or vehicles pass, the construction method of the U-type underpass according to the present invention includes first to sixth steps. It may be accomplished including steps (S100 to S600).

The first step (S100) is a step of selecting the installation location of the steel pipe pile 20, installing the guide wall by investigating the interference of the obstacles, and drilling the steel pipe pile 20.

The second step (S200) is a step of erecting the steel pipe piles 20, pouring them with filled concrete, reinforcing them with reinforcement when necessary, and installing excavation and temporary drainage channels. In addition, a transverse beam 500 may be installed in a section in which the wall excavation depth exceeds the allowable displacement value in structural calculation. In the first and second steps (S100 and S200), the connector 200 may be installed between the steel pipe piles 20.

In the third step (S300), waterproof concrete 30 is poured on the front of the excavation, fixed connection plates 90 are installed on the lower slab 300 and the steel pipe piles 20, respectively, and if necessary, an anchor for preventing buoyancy is installed. In this step, reinforcing bars are placed on the lower slab 300 and concrete is poured.

The fourth step (S400) is a step of installing the waterproof sheet 50 on the front of the excavation, reinforcing the wall reinforcement, and then pouring concrete.

The fifth step (S500) is a step of removing the guide wall and installing the cap concrete 400 on the upper end of the outer wall 100.

The sixth step (S600) is a step of paving the underpass 10, painting the lanes, and completing the protective railing after construction.

The method of constructing a box-type underpass according to the present invention may include steps 1 to 9 (S100 to S900).

In the first step (S100), a guide wall is installed by selecting the installation location of the steel pipe pile 20, investigating the interference of the obstacle, and drilling the steel pipe pile 20 of the outer wall 100 and the intermediate pile for temporary facilities. Step.

The second step (S200) is a step of reinforcing steel pipe piles 20 and intermediate piles of the outer wall 100, pouring concrete into the steel pipe piles 20 of the outer wall 100, and reinforcing with reinforcement if necessary. . In the first and second steps (S100 and S200), the connector 200 may be installed between the steel pipe piles 20.

The third step (S300) is a step of installing a traffic bypass on the upper road, installing an obstacle protection hole, and excavating to the upper slab 310 installation surface. During excavation, it is possible to install support beams in stages.

The fourth step (S400) is to install a temporary piece bracket for supporting the upper slab in the middle pile at the bottom of the upper slab 310 installation surface, and install a fixed connection plate 90 to the steel pipe pile 20, and the upper slab 310 In this step, while reinforcing reinforcement, it is connected to the fixed connection plate 90 and concrete is poured.

The fifth step (S500) is to remove and refill the support beams and obstacle protection holes on the upper surface of the upper slab, remove a portion (about 2.0m) of the upper part of the steel pipe piles (20) of the outer wall (100), and remove the upper road. It is the stage to restore and restore traffic.

The sixth step (S600) is a step of excavating the inside of the underpass 10, installing a temporary drainage channel, and pouring the waterproof concrete 30 on the front of the steel pipe pile 20 of the outer wall 100.

In the seventh step (S700), a fixed connection plate 90 is installed on each of the steel pipe piles 20 and the lower slab 300, and the lower slab 300 and the inner wall 110 are constructed, and the outer wall 100 This is the step of installing the waterproof sheet 50 on the front side of the.

The eighth step (S800) is a step of removing the Piece Bracket and the intermediate pile, reinforcing the reinforcement on the outer wall 100 and pouring concrete.

The ninth step (S900) is a step of paving the underpass 10, painting the lane, and completing the construction of the protective railing.

Hereinafter, a detailed description of each component is as described above.

According to an embodiment of the present invention, if an underground roadway is constructed using the SEP-Wall (Self-Supported Pile Wall) method that can be used as both a temporary facility and a structure body, it is possible to minimize the installation of temporary facilities and reduce the section of walls and lower slabs. Thus, it is possible to construct an economical underpass.

In addition, it is easy to secure safety during construction and public use and improve workability due to the combined wall structure.

In addition, the workability is improved through the simplification of the process, so that the construction period can be greatly shortened.

In addition, it is possible to minimize traffic congestion during construction as the period of traffic control and blocking is short.

In addition, since most of the underground roadway construction is performed underground after the installation of the upper slab is completed, noise, vibration and environmental pollution during construction can be prevented.

In addition, it is advantageous for maintenance as it has excellent waterproofing performance with a three-stage waterproof structure of connectors, waterproof concrete and waterproof sheet, and finished concrete.

Detailed description of the preferred embodiments of the present invention disclosed as described above has been provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art may use the configurations described in the above-described embodiments in a manner that combines with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein, but is to be accorded the greatest scope consistent with the principles and novel features disclosed herein. In addition, the embodiments may be configured by combining claims that do not have an explicit citation relationship in the claims, or may be included as new claims by amendment after filing.

10: Underpass
20: steel pipe pile
30: waterproof concrete
50: waterproof sheet
80: Finished wall
90: fixed connecting plate
91: connecting hole
100: outer wall
110: inner wall
200: connector
210: first joint
220: second joint
300: lower slab
310: upper slab
400: cap concrete
500: transverse beam
600: fixing member
610: vertical steel plate
620: horizontal steel plate
630: fixed stud
640: stud connection fixing hardware

Claims (16)

It is a box-type underpass that is buried underground and provides a passage for people and vehicles.
An outer wall that forms an outer wall surface by integrally connecting the steel pipe piles that are perforated and excavated underground;
A connector installed by welding to a predetermined depth below the steel pipe piles and being sealed while being coupled to each other to block the inflow of groundwater; And
A lower slab connected to the outer wall forming a pair to form a bottom surface;
An upper slab manufactured in the same shape as the lower slab and coupled to an upper portion of the pair of outer walls;
An inner wall coupled between the upper slab and the lower slab at an intermediate portion between the pair of outer walls to partition a space;
A vertical steel plate installed on a portion of the steel pipe pile and coupled to the upper and lower slabs;
A horizontal steel plate coupled to the vertical steel plate and connecting the steel pipe piles to the upper and lower slabs;
A fixing stud installed on the horizontal steel plate to fix the horizontal steel plate to the upper and lower slabs; And
Including; a stud connection fixing hardware which is welded to the steel pipe pile and connects the steel pipe pile to the fixed stud,
The combination of the outer wall and the upper and lower slabs is a method in which a connecting plate is fixed to the steel pipe pile by welding and having at least one connecting hole connecting the main reinforcing bar is embedded in the ends of the upper and lower slabs while being fixed, and
The stud connection fixing hardware is a self-standing pile, characterized in that the steel pipe pile is coupled to the upper and lower slabs while being coupled to the steel pipe pile by the vertical steel plate or the horizontal steel plate or by welding to the steel pipe pile. Used underpass. The method according to claim 1,
The connector,
A first joint protruding from a portion of an outer surface of one side of the steel pipe pile to a predetermined length; And
A second joint piece formed on a portion of the outer surface of the other side of the steel pipe pile in correspondence with the first joint piece, and fitted to the first joint piece. The method according to claim 2,
The connector,
An underpass using a self-supporting pile, characterized in that the pair of first joints protrude in a spaced state, and the second joint is welded while being inserted between the pair of first joints. The method according to claim 2,
The connector,
The first joint is a cylindrical shape that is open to a part, and the second joint is also manufactured in a circular shape with an open shape to a part, and the first joint and the second joint are fitted through the open part. Underground road using self-supporting piles. The method according to claim 2,
The connector,
Self-supporting, characterized in that each of the first joint and the second joint is formed to protrude from the steel pipe pile in a straight shape, and each end of the first joint and the second joint is bent and fitted together. Underground road using type piles. The method according to claim 2,
The connector,
An underpass using a self-supporting pile, characterized in that the ends of the first joint and the second joint are formed in a hook shape, respectively, so as to be fitted while being engaged with each other. The method according to claim 1,
Cap concrete installed on the upper end of the outer wall to horizontally distribute the external force acting on the outer wall; an underpass using a self-supporting pile, characterized in that it further comprises. The method according to claim 1,
In a section in which the excavation depth of the outer wall exceeds the allowable deflection value, a transverse beam for preventing displacement of the upper end of the outer wall by connecting the outer walls horizontally; a self-standing pile further comprising: Used underpass. delete delete delete delete The method according to claim 1,
The outer wall,
For waterproofing, a waterproof concrete is poured in front of the steel pipe piles, a waterproof sheet is installed, and a finishing wall is formed by placing concrete on the front of the waterproof sheet. The method according to claim 1,
The outer wall,
An underground road using a self-supporting pile, characterized in that the inside of the steel pipe piles is filled with concrete or reinforced with reinforced concrete to increase rigidity. delete delete

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