KR101469603B1 - Pipe for piperoof with multipurpose solidarizing tube and construction method using this pipe - Google Patents

Abstract

The present invention relates to a structure of a steel pipe forming a steel pipe loop built for constructing an underground structure and a method of constructing an underground structure by applying the steel pipe structure which uses a steel pipe including a multipurpose bound pipe to form a firm steel pipe loop and prevents underground water from being introduced inside the steel pipe loop. The steel pipe for a loop includes a main steel pipe forming a body of a steel pipe loop; and a bound pipe attached at one side of an outer surface of the main steel pipe to connect the main steel pipes in parallel in order to form the steel pipe loop, wherein a binding groove, into which a portion of the bound pipe of the steel pipe for a loop is inserted, is formed on a cross section of the main steel pipe in a direction of an adjacent steel pipe for a loop, the bound pipe is formed of an insertion unit inserted inside the main steel pipe of an adjacent steel pipe for a loop in the other direction through the binding groove formed at the main steel pipe of the adjacent steel pipe for a loop in the other direction; and an exposed unit in contact with outside soil, and a plurality of multi-functional is are formed at the exposed unit of the bound pipe in the longitudinal direction.

Description

TECHNICAL FIELD [0001] The present invention relates to a structure of a steel pipe for a loop having a multi-purpose binding pipe, and a method of constructing an underground structure using the same.

The present invention relates to a structure of a steel pipe constituting a steel pipe loop constructed for construction of an underground structure and a method of constructing an underground structure by applying the structure of the steel pipe, and a steel pipe having a multi- And it is also possible to prevent groundwater or the like from flowing into the steel pipe loop.

When constructing underground structures in deep or deep urban areas, non-excavation methods are often applied to reduce excavation and avoid interference with existing ground structures or underground structures. When applying the noninvasive method, it is necessary to secure means for securing the safety of the work against the earth pressure and minimizing the influence on the surrounding ground. One of these means is the steel pipe loop method.

The steel pipe loop method is a method in which a steel pipe loop formed by integrating a plurality of steel pipes around a portion where an underground structure is constructed is able to withstand the earth pressure even if the inside of the steel pipe loop is removed, It is necessary to firmly integrate the steel pipes constituting the steel pipe loop in order to perform the role properly.

In the 'steel pipe loop structure' of the registration number 20-0385542, as shown in FIG. 1, in the horizontal groove 204 formed in the longitudinal direction at one side of the end face of the one steel pipe 200, And the angles 206 attached to the outer surface of the other side are fitted to integrate each steel pipe. The above-described method has an advantage that the steel pipes can be firmly integrated by using a standing member such as an angle without using a separate exclusive member.

However, due to the nature of the underground structure construction work in the ground, the steel pipe loop may be affected by ground water in addition to the earth pressure. However, since the conventional technology does not consider this, the construction work of the structure may not be smoothly carried out by the ground water, There is a problem that the performance of the structure itself may deteriorate.

Therefore, in the conventional technology such as the 'steel pipe loop structure', it is necessary to separately perform waterproof treatment on the underground structure itself such as the enclosure due to insufficient water tightness to the steel pipe joint part, thereby reducing the economical efficiency of construction.

It is an object of the present invention to solve the problems of the prior art as described above, and it is an object of the present invention to provide a steel pipe structure which is robust and which prevents groundwater and the like from entering the steel pipe loop, And a method of constructing an underground structure using the same.

According to a preferred embodiment of the present invention for solving the above problems, there is provided a structure of a steel pipe for a loop constituting a steel pipe loop constructed for construction of an underground structure, wherein the steel pipe for a loop comprises a body of a steel pipe loop And a binding pipe attached to one side of the outer surface of the main steel pipe to form a steel pipe loop by connecting main steel pipes in parallel; And a coupling groove into which a part of the coupling pipe of the steel pipe for the adjacent loop is inserted is formed in the direction of the steel pipe for the adjacent loop on the cross section of the main steel pipe; The coupling pipe is composed of an inserting portion to be inserted into the main steel pipe of the steel pipe for the adjacent loop in the other direction through the coupling groove formed in the main steel pipe of the steel pipe for the adjacent loop in the other direction and an exposed portion facing the outside; And a plurality of multi-function holes are formed in the exposed portion of the coupling pipe in the longitudinal direction.

According to another embodiment of the present invention, there is provided a structure of a steel pipe for a loop having a multi-purpose coupling pipe, wherein the main steel pipe is a composite pipe in which two or more steel pipes are joined in parallel.

According to another embodiment of the present invention, the coupling pipe is arranged in parallel with two spacing distances corresponding to the widths of the coupling grooves for one main steel pipe, and a structure of the steel pipe for a loop having the multipurpose coupling pipe Is provided. At this time, on the cross section of the main steel pipe, a plurality of through holes may be formed in the longitudinal direction at the intermediate position of the separation distance of the binding pipes.

According to still another embodiment of the present invention, the main steel pipe is provided with a bracket that is parallel to the width direction of the binding groove and adjacent both ends in the width direction of the binding groove. Structure is provided.

According to another embodiment of the present invention, there is provided a structure of a steel pipe for a loop having a multipurpose coupling pipe, wherein a ring-shaped diaphragm is installed in the main steel pipe.

According to another embodiment of the present invention, a work station is constructed before and after a section where an underground structure is to be installed, a plurality of steel pipes for a loop are inserted at a position where an underground structure is to be installed to form a steel pipe loop, The method comprising the steps of: a) attaching a coupling pipe having a plurality of multifunctional holes formed in the longitudinal direction thereof to one side of the outer surface of the main steel pipe, Preparing a plurality of steel tubes for a loop in which the multifunctional holes are attached so as to face the gap between the outer surface of the coupling pipe and the outer surface of the main steel pipe; b) press-fitting one steel pipe for the loop into the reference position; c) After removing the debris in the main steel pipe of the press-in looped steel pipe, a binding groove into which a part of the pipe of the steel pipe for the subsequent press-in loop is inserted in the direction of the steel pipe for the loop to be subsequently inserted on the cross- ; d) clamping the steel pipe for the loop for the next press-in loop by pressing the steel pipe for the next press-fitting loop in a state where the position of the joining groove of the steel pipe for the front press-in loop and the steel pipe for the subsequent press-fitting loop are aligned; e) waterproofing between the both ends of the fastening groove width of the straight steel pipe for the straight press-in steel pipe and the outer surface of the steel pipe for the subsequent press-in loop while welding the joint pipe of the main steel pipe of the steel pipe for the straight- step; f) completing steps c) through e) and completing a steel pipe loop by placing concrete in each main steel pipe, wherein after step e) or step f) is completed, And a step of grouting between the main steel pipes through the multi-function holes of the coupling pipe by injecting the grout material into the joint pipe. .

According to still another embodiment of the present invention, in step (a) or step (c), a brace is provided in the main steel pipe so as to be parallel to the width direction of the binding groove and adjacent to both ends in the width direction of the binding groove. There is provided a method of constructing an underground structure by applying a steel pipe for a loop having a pipe.

According to another embodiment of the present invention, the steel pipe for a loop manufactured in the step (a) is fabricated such that two coupling pipes per one main steel pipe are arranged in parallel with a distance corresponding to the width of the coupling groove The present invention provides a method for constructing an underground structure by applying a steel pipe for a loop having a multipurpose binding pipe.

According to another embodiment of the present invention, a plurality of through holes are formed in the longitudinal direction at a middle position of the coupling pipes on the cross section of the main steel pipe. A method of constructing a structure is provided. In this case, before the concrete is poured in the step (f), a reinforcing steel material disposed in the lateral direction of the steel pipe loop through the binding groove and the through hole may be provided.

According to still another embodiment of the present invention, in the step (f), concrete is filled in only a part of the inside of the main steel pipe, and the part where the concrete is not filled is removed after the concrete is cured. A method of constructing an underground structure by applying a steel pipe for a loop is provided.

According to another embodiment of the present invention, the main steel pipe of the steel pipe for a loop is a composite pipe in which two or more steel pipes are joined in parallel. By applying the steel pipe for a loop having the multi- Is provided.

According to another embodiment of the present invention, the upper slab portion of the steel pipe loop is formed by press-fitting the steel pipe for the loop in the width direction of the steel pipe loop, and the remaining portion is formed by pressing the steel pipe for the loop in the longitudinal direction of the steel pipe loop, Wherein the loop steel pipe constituting the upper slab portion is installed through one surface of the loop steel pipe located at the uppermost one of the loop steel pipes constituting the wall portion. A method of constructing a structure is provided.

According to another embodiment of the present invention, there is provided a method for constructing an underground structure by applying a steel pipe for a loop having a multipurpose binding pipe, wherein the steel pipe loop is constructed up to a lower slab portion and is formed in a generally rectangular shape .

According to another embodiment of the present invention, the process of constructing an underground structure in the steel pipe loop includes a method of constructing a concrete structure for a concrete structure by crushing an inner space formed by a steel pipe loop, Wherein the steel pipe for a loop having the multipurpose binding pipe is applied to the underground structure.

According to another embodiment of the present invention, the process of constructing the underground structure in the steel pipe loop is performed by traction and / or propulsion of the underground structure enclosure manufactured in advance at the work station. There is provided a method of constructing an underground structure by applying a steel pipe for a loop having a pipe.

In the structure of the steel pipe for a loop according to the present invention, the steel pipe for the loop is composed of a main pipe and a binding pipe attached to the outside of the main pipe. The binding pipe serves not only to bind the steel pipes for the loop together, And it is possible to discharge the ground water and the like contained in the gravels without interfering with the construction of the underground structure and to function as a grout pipe to allow grouting in the space between the outer surfaces of the roof steel pipe, Tight structure and a solid integral structure can be achieved. In addition, the watertight structure of the steel pipe loop can eliminate the waterproofing of the underground structure itself, thereby making it possible to economize on the construction of the underground structure.

The strut and the ring-shaped diaphragm provided in the main steel pipe constituting the steel pipe for the loop can prevent the structural performance of the main steel pipe from deteriorating due to the coupling groove formed for the binding between the steel pipes for the loop.

When the reinforcement steel is installed in the lateral direction of the steel pipe loop constituted by the steel pipe for the loop, the lateral rigidity of the steel pipe loop increases, and when the main steel pipe of the steel pipe for the loop is formed as a composite pipe, .

By forming a part of the steel pipe for the loop constituting the steel pipe loop in the width direction of the steel pipe loop, it is possible not only to increase the lateral rigidity of the steel pipe loop but also to use the steel pipe for the smaller standard. Can be reduced.

1 is an explanatory view of a 'steel pipe loop structure' as a prior art.
2 is a cross-sectional view and a perspective view of a steel pipe structure for a loop according to the present invention.
Fig. 3 is a cross-sectional view and a perspective view in the case where two bundling pipes constituting the steel pipe for the loop are formed per main pipe.
Fig. 4 shows various embodiments of the steel pipe for the loop in the case where the main steel pipe constituting the steel pipe for the loop is formed as a composite pipe.
5 is a cross-sectional view and a perspective view of a steel pipe for a loop in the case where the steel pipe for a loop further comprises a ring-shaped diaphragm.
6 is a cross-sectional view and a perspective view of a steel pipe for a loop when the main steel pipe of the steel pipe for a loop is formed into a square pipe.
FIG. 7 is an explanatory view showing a process of forming a steel pipe loop in order to construct an underground structure by applying the structure of the steel pipe for the loop.
Fig. 8 is an explanatory view of a case where a lateral reinforcing steel material is installed in the steel pipe loop. Fig.
FIG. 9 is an explanatory diagram of a case where concrete is filled only in a part of the main steel pipe constituting the steel pipe loop.
10 is an explanatory view of a case where the upper slat portion of the steel pipe loop is formed by a steel pipe for a loop in which the steel pipe loop is press-fitted in the width direction of the steel pipe loop.
11 is another embodiment of the steel pipe loop section.
FIG. 12 is an explanatory view of a case where an underground structure is constructed in a spatial manner in the space of the steel pipe loop. FIG.
FIG. 13 is an explanatory view of a case where an underground structure is constructed in a space in the steel pipe loop by an enclosure propulsion (and / or traction) method.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, however, it is to be understood that the present invention is not limited to the disclosed embodiments.

The present invention relates to a structure of a steel pipe for a loop constituting a steel pipe loop formed around a location of an underground structure in order to ensure the safety and workability of an operator in the case of constructing an underground structure by a non- And a method of applying an underground structure using the same.

The structure of the steel pipe for a loop according to the present invention will be described first. The structure of the steel pipe for a loop according to the present invention is related to one unspecified structure when a plurality of steel pipes for a loop form a steel pipe loop. A description will be given of the state before the loop steel pipe is formed into the steel pipe loop if necessary.

2 is a cross-sectional view and a perspective view of a steel pipe 100 for a loop according to the present invention.

In the description of the steel pipe 100 for a loop according to the present invention, when there is a characteristic in relation to other adjacent steel pipes, the steel pipe for a loop (the loop located at the center in FIG. 2 The steel pipe for the first loop 100A is referred to as a first loop steel pipe 100A and the steel pipe for the first loop 100A is press-fitted into the steel pipe for the loop The first looped steel pipe 100A is inserted into the looped steel pipe before being press-fitted (in FIG. 2 (b), the first looped steel pipe 100A ) Is referred to as a third loop steel pipe 100C. When describing the steel pipe 100 for an unspecified position, the term "first steel pipe 100" is used instead of the first and second terms.

The steel pipe (100) for a loop according to the present invention comprises a main steel pipe (110) and a coupling pipe (120). The main pipe 110 forms a main outer appearance of the steel pipe loop 10 and has a structural role and the coupling pipe 120 has a smaller diameter than the main pipe 110 and is formed on one side of the outer surface of the main pipe 110 And serves to integrate the steel pipes 100 for a loop which are attached and arranged in parallel.

A part of the coupling pipe 120 of the second loop steel pipe 100B is inserted in the direction of the adjacent loop steel pipe (second loop steel pipe) on the cross section of the main steel pipe 110 of the first loop steel pipe 100A A groove H is formed. The coupling groove H formed in the first looped pipe 100A is connected to the main pipe 110 of the second looped steel pipe 100B when the second looped steel pipe 100B is press- The first loop pipe 120 can be inserted into the main pipe 110 of the first loop pipe 100A and the second loop pipe 110B can be inserted into the gap between the main pipe 110 and the coupling pipe 120 of the second loop pipe 100B. Both end portions in the width direction of the binding groove H of the one-loop steel pipe 100A are fitted so that the first loop steel pipe 100A and the second loop steel pipe 100B can be bound.

The coupling pipe 120 of the first looped steel pipe 100A is connected to the third looped steel pipe 100 through the coupling groove H formed in the main steel pipe 110 of the steel pipe for the third adjacent loop An inserting portion 121 inserted into the main steel pipe 110 of the main body 100C and an exposed portion 122 facing the external gravel. A plurality of multifunctional holes (M) are formed in the exposed portion (122) of the coupling pipe (120) in the longitudinal direction.

When the underground structure is constructed on the ground having a high groundwater level or when the water content of the soil increases due to the rainfall, water may flow into the main steel pipe 110 and the like and the workability may be lowered. The multifunctional hall M faces external gravel so that groundwater or the like can be introduced into the coupling pipe 120 through the multifunctional hall M and groundwater or the like introduced into the coupling pipe 120 Through the both ends of the binding pipe 120, out of the section where the underground structure is constructed. As a result, groundwater or the like hardly flows into the main steel pipe 110, and the water content of the surrounding soil can be rapidly lowered.

Grout material is injected into the coupling pipe 120 to grout the space between the steel pipes 100 through the multifunctional holes M to completely block the inflow of groundwater into the main pipe 110, The steel pipes 100 can be more firmly integrated.

The coupling tubes 120 may be arranged in parallel with two spaced distances corresponding to the width of the coupling groove H per one main steel pipe 110. 3 is a cross-sectional view and a perspective view in the case where two coupling tubes 120 are formed per main steel pipe 110.

When the loop pipe 120 is provided with two coupling pipes 120, the coupling pipe 120 having a smaller diameter than that of the coupling pipe 120 having one coupling pipe 120 is used, Of the first loop steel pipe 100 in the gap between the main steel pipe 110 and each coupling pipe 120 of the second loop steel pipe 100 by disposing the first loop steel pipe 100 at a distance corresponding to the width of the coupling groove H So that one end of each end portion in the width direction of the binding groove (H) can be inserted one by one.

A plurality of through holes P are formed in the longitudinal direction at the intermediate position of the separation tubes 120 on the end surface of the main steel pipe 110 when the steel pipe 100 for a loop has two coupling pipes 120 .

The through holes P are arranged in the lateral direction of the steel pipe loop 10 when the earth pressure acting on the steel pipe loop 10 is large and it is necessary to improve the integrity between the steel pipes 100 for the loop Reinforcing material such as reinforcing steel can be installed and the concrete laid in the steel pipe 100 can be poured through the plurality of steel pipes 100 through the through hole P, Thereby improving the integrity between the two.

The main steel pipe 110 may be formed as a composite pipe in which two or more steel pipes are connected in parallel. When the main steel pipe 110 is formed as a composite pipe, there is an advantage that a plurality of steel pipes for a loop 100 are press-fitted at a time, and air can be shortened.

4 shows various embodiments of the steel pipe 100 for a loop in the case where the main steel pipe 110 is formed as a composite pipe.

4 (a), a plurality of steel pipes are joined to each other, and then the pipe 120 is attached to a steel pipe at one end, Or may be one in which the coupling grooves H are formed in the end portions of the steel pipe. After joining the steel pipes so that the space between the steel pipes constituting the main steel pipe 110 communicates with each other as shown in Fig. 4 (b) The binding pipe 120 may be attached to the steel pipe of the other end and the binding groove H may be formed in the steel pipe of the other end. Alternatively, as shown in FIG. 4 (c), a plurality of steel pipes 100 for a loop made up of one main pipe 110 and a coupling pipe 120 may be formed in a bundled shape.

The main steel pipe 110 may be provided with a pair of braces 111 parallel to the width direction of the binding groove H and adjacent to both ends of the binding groove H in the width direction.

The coupling groove H is formed on the entire length of the main steel pipe 110 so that the steel pipe 100 for the first press-in loop and the steel pipe 100 for the subsequent press-fitting loop can be bound over the entire length, H may be narrowed and the main steel pipe 110 may be deformed. The brace 111 is formed parallel to the width direction of the coupling groove H to prevent the main steel pipe 110 from being deformed, thereby facilitating the press-fitting operation of the steel pipe 100 for a loop.

The braces 111 are spaced apart from the coupling grooves H so that the coupling tubes 120 of the steel tubes 100 for the subsequent indentation loop do not interfere with the braces 111 when the steel tubes 100 for the subsequent press- .

A ring-shaped diaphragm 112 may be installed in the main steel pipe 110. FIG. 5 shows a steel pipe 100 for a loop in which a ring-shaped diaphragm 112 is installed in a main steel pipe 110.

The ring-shaped diaphragm 112 prevents the main pipe 110 from being deformed and allows the concrete C to be installed in the main pipe 110 and the main pipe 110 to be firmly combined.

The ring-shaped diaphragm 112 is formed so as not to interfere with the coupling groove H, the through hole P, and the like.

The main steel pipe 110 of the steel pipe 100 shown in FIG. 2 to FIG. 5 has a steel pipe having a circular cross section, but a square pipe as shown in FIG. 6 may also be used.

Hereinafter, a method of constructing an underground structure using the above-described steel pipe 100 for a loop will be described.

A method of constructing an underground structure according to the present invention includes constructing a work station before and after a section where an underground structure is to be installed and pressing a plurality of loop steel pipes 100 at a position where an underground structure is to be installed, The method of constructing an underground structure according to the present invention is a method of applying the structure of the steel pipe 100 for a loop, The process of forming the steel pipe loop 10 will be mainly described.

The steel pipe loop 10 using the above-described steel pipe 100 is formed by: a) attaching a coupling pipe 120 having a plurality of multifunctional holes M formed in the longitudinal direction thereof to one side of the outer surface of the main steel pipe 110; Preparing a plurality of steel tubes 100 for a loop to which the multifunctional holes M are attached so as to face the outer surface of the coupling pipe 120 and the outer surface of the main steel pipe 110; b) press-fitting one loop steel pipe (100) at the reference position; c) After removing the soil from the main steel pipe 110 of the steel pipe 100 for the loop that has been press-fitted, a subsequent press-fitting in the direction of the steel pipe 100 'for the loop to be subsequently inserted on the end face of the main steel pipe 110, Forming a coupling groove (H) into which a part of the coupling pipe (120) of the steel pipe for a loop (100 ') is inserted; d) In a state in which the position on the mouth surface of the binding pipe H of the steel pipe 100 for the front press-in loop and the binding pipe 120 constituting the steel pipe 100 'for the subsequent press-fitting loop are made to coincide with each other, 100 ') to bind steel pipes 100, 100' for two loops; e) joining the main pipe 110 of the steel pipe 100 and the connecting pipe 120 of the steel pipe 100 'for the next press-fitting loop to the joining groove of the steel pipe 100 H) width and the outer surface of the coupling pipe 120 of the steel pipe 100 'for the subsequent press-fitting loop; f) repeating the steps c) to e) and completing the steel pipe loop by placing the concrete C in each main steel pipe 110.

FIG. 7 shows a process of forming the steel pipe loop 10 in order.

Hereinafter, the process of forming the steel pipe loop 10 will be described step by step. Detailed description about the structure of the steel pipe 100 for the loop may be omitted.

a) preparing a plurality of steel pipes 100 for a loop (Fig. 7 (a));

A steel pipe 100 for a loop to constitute a steel pipe loop is prepared. The steel pipe 100 before being molded is manufactured in a state where the binding pipe 120 is attached to one side of the outer surface of the main steel pipe 110 having a closed cross section.

The multifunctional holes M formed in the binding pipe 120 in the longitudinal direction are arranged in the exposed portion 122 facing the external soil while the steel pipe loop 10 is formed, (120) is attached so as to face the gap between the outer surface of the main pipe (120) and the main steel pipe (110).

b) press fitting one steel pipe 100 for a loop (Fig. 7 (b));

It is not necessary for the loop-use steel pipe 100 to be press-fitted into the reference position for the first time to press the loop-use steel pipe 100 at the reference position.

c) forming a binding groove H in the main steel pipe 110 of the press-fitted steel pipe 100 (Fig. 7 (c));

After removing the soil within the main steel pipe 110 of the steel pipe 100 after completion of the press-fitting, the steel pipes 100 and 100 'for press-fitting and the steel pipes 100 and 100' Work.

The coupling groove H formed so that the steel tube 100 'for the subsequent press-fitting loop can be bound to the steel tube 100 for the loop-press-fitted steel tube 100' is inserted in the steel tube 100 ' 100 'is inserted into the gap between the main pipe 110 and the coupling pipe 120 in the width direction of the coupling groove H.

In the main steel pipe 110, a pair of struts 111 which are parallel to the width direction of the binding groove H and which are adjacent to both end portions in the width direction of the binding groove H can be provided.

The struts 111 are installed to prevent the main steel pipe 110 from being deformed by forming the coupling grooves H. After the removal of the gravel in the main steel pipe 110 in the step c) In step a), when the roof steel pipe 100 is removed by gravity while the gravel in the main steel pipe 110 is removed by gravity in step b), the main steel pipe 100 110 in advance.

d) tightening the steel pipes 100 for the loop by press-fitting the steel pipe 100 'for the subsequent press-fitting loop at a position adjacent to the steel pipe 100 for the straight press-in loop (Fig. 7 (d));

The steel pipe 100 'for the subsequent press-fitting loop is made to coincide with the position of the binding groove H of the steel pipe 100 for the front press-in loop and the binding position 120 of the steel pipe 100' The end of the coupling groove H of the steel pipe 100 for the loop which is press-fitted in the gap between the main pipe 110 and the coupling pipe 120 of the steel pipe 100 'for the subsequent press-fitting loop is fitted The steel pipes 100 for a loop can be integrated.

The multifunctional hole M formed in the coupling pipe 120 of the steel pipe 100 'for the next press-in loop is pressed against the gravel by press fitting the steel pipe 100' for the subsequent press-fitting loop, (M) into the binding pipe (120) and flows out to the end of the binding pipe (120). Groundwater or the like that flows to the end of the coupling pipe 120 is discharged to a work station before or after the section where the underground structure is installed, but the work base is not disturbed by groundwater or the like because a pump for discharging groundwater is installed.

e) joining the steel pipe 100 for the first press-in loop and the steel pipe 100 'for the subsequent press-fitting loop and waterproofing the pipe (Fig. 7 (e));

The steel pipes 100 and 100 'for the loop are completely integrated to completely block the inflow of the ground water into the main steel pipe 110 of the steel pipe 100 that has been press-fitted into the loop pipe.

100 'by welding the main pipe 110 of the steel pipe 100 and the connecting pipe 120 of the next press-fitting loop steel pipe 100' And the inside of the main steel pipe 110 may be made to have a waterproof structure. Alternatively, the welded steel pipe 100 may be integrated with the welded steel pipe 100 to seal the main steel pipe 110, You can also make it.

f) completing the steel pipe loop 10 by repeating the steps c) to e) and placing the concrete C in each main steel pipe 110 (Fig. 7 (f));

The steel pipes 100 for the loop are press-fitted in order to the shape of the underground structure in the vicinity of the press-fitted steel pipe 100 'and the concrete C is placed in the main steel pipe 110 to form the steel pipe loop 10 It completes.

Since the concrete C placed in the main steel pipe 110 is restrained by the main steel pipe 110, the steel pipe loop 10 can be structured to be very rigid.

Grouting (G) grouting between the main steel pipes 110 through the multi-function hole M of the coupling pipe 120 by injecting the grout material into the coupling pipe 120 after the step e) or f) (Fig. 7 (g)).

The multifunctional hole M formed in the coupling pipe 120 not only serves to introduce groundwater into the coupling pipe 120 serving as a discharge pipe for discharging groundwater and the like, And serves to improve the integrity of the main steel pipes 110 by acting as a grout pipe for injecting the grout material into the space between the outer surfaces.

When the earth pressure acting on the steel pipe loop 10 is large, grouting (G) is performed between the main steel pipes 110 every time the steel pipe 100 for a loop is press-fitted, and the earth pressure acting on the steel pipe loop 10 is not large , All of the steel pipes 100 for a loop are press-fitted and then grouted (G) between the main steel pipes 110.

The main steel pipe 110 of the steel pipe 100 for a loop is made of a composite pipe in which two or more steel pipes are joined in parallel in the step a), and in the step b) and the step e) .

When the main steel pipe 110 is formed as a composite pipe, it is easy to join the steel pipes constituting the composite pipe, thereby reducing the risk of defects at the joint and reducing the number of repetitions of steps c) through e) Therefore, it is possible to quickly and easily construct the steel pipe loop construction work.

The loop steel pipe 100 may have one coupling pipe 120 per one main steel pipe 110 as described above with respect to the structure of the loop steel pipe 100, The length of the coupling pipe 120 may be set at a middle position of the coupling pipes 120 when the two coupling pipes 120 are provided, A plurality of through-holes P may be formed in the direction of the substrate.

The through hole P is formed in the steel pipe loop 10 so that the reinforcing steel 130 disposed in the lateral direction of the steel pipe loop 10 together with the binding groove H can be installed before the concrete C is poured in step f) It plays a role. Fig. 8 shows a case where the lateral reinforcing steel member 130 is installed in the steel pipe loop 10. Fig.

The reinforcement steel 130 improves the lateral stiffness of the steel pipe loop through its own rigidity and synthetic action with the concrete (C).

As the reinforcing steel member 130, a steel assembly or a section steel may be used.

When the transverse reinforcing steel material 130 is installed in the steel pipe loop 10, the concrete pipe C is filled in only a part of the inside of the main steel pipe 110 in the step f), and the part where the concrete C is not filled Can be removed after the concrete C is cured. Fig. 9 is an explanatory diagram of this case.

Before the concrete C is placed in the main steel pipe 110, as shown in FIG. 9A, a blocking plate 113 for separating the space in the main steel pipe 110 is provided in each main steel pipe 110 So that the concrete C is filled only in a part of the main steel pipe 110. The blocking plate 113 is provided so as to coincide with the cross-sectional direction of the steel pipe loop 10 in the direction toward the inside of the space formed by the steel pipe loop 10.

9 (b), the portion of the main steel pipe 110 where the concrete C is not poured is filled in the space in the steel pipe loop 10 in the basement Are removed together in the process of removing the soil from the space in the steel pipe loop 10 to construct the structure. Therefore, when the inner surface of the steel pipe loop 10, which is in contact with the space in the steel pipe loop 10, is flat and the upper slab of the underground structure is formed flat, the outer surface of the underground structure and the steel pipe loop 10 ) The amount of mortar or concrete placed between the inner side surfaces can be reduced.

10, the upper slab portion Su of the steel pipe loop 10 is formed by press-fitting the steel pipe 100 for the loop in the width direction of the steel pipe loop 10, 100 may be formed by press-fitting in the longitudinal direction of the steel pipe loop 10.

The steel pipe loop is generally formed to have a longer length than the width of the steel pipe loop. The loop steel pipe 100 is formed to be longer than the steel pipe loop, It is possible to use a smaller standard steel pipe 100 for a loop because the loop steel pipe 100 can support a larger load.

The construction of the upper slab portion Su of the steel pipe loop 10 using the steel pipe for the loop 100 which is press-fitted in the width direction of the steel pipe loop is performed by: i) locating at the uppermost position among the steel pipes 100 constituting the wall portion (Ii) a step of drilling the inside of the press-fitted steel pipe 100 for a loop and making a hole on one surface thereof, (iii) a process of press-fitting the steel pipe 100 for a loop press- (100) in a width direction of the steel pipe loop (10), and vi) a step of integrating the steel pipe (100) of the slice shape into a single piece .

It is a matter of course that the loop steel pipe 100 composed of the coupling pipe 120 and the main steel pipe 110 can be used as the steel pipe 100 for the loop which is press-fitted in the width direction of the steel pipe loop 10, The groundwater or the like flowing through the pipe 120 may be discharged to the outside through the main steel pipe 110 of the steel pipe 100 at the top of the loop steel pipes 100 constituting the wall portion.

In addition to the upper slab portion Su of the steel pipe loop 10, the wall portion may be formed by the steel pipe 100 that is press-fitted in the height direction of the steel pipe loop 10, but at least the wall portion of the steel pipe loop 10 The looped steel pipe 100 located at the uppermost position among the looped steel pipes 100 constituting the loop pipe 10 should be press-fitted in the longitudinal direction of the steel pipe loop 10.

모양으로 형성되지만, 하부슬래브 부분(Sl)까지 구축되어 전체적으로 ㅁ자 형상으로 형성될 수도 있다. 도 11의 (a)에는 ㅁ자 형상을 가지는 강관루프(10)가 도시되어 있다.The steel pipe loop 10 generally has a cross-

However, it may be formed up to the lower slab portion Sl and formed into a generally rectangular shape. Fig. 11 (a) shows a steel pipe loop 10 having a square shape.

The steel pipe loop (10) having a shape is used to reinforce the ground when an underground structure is constructed using a prefabricated body, thereby facilitating propulsion and / or traction of the body.

In addition, the steel pipe loop 10 may be formed in the shape of an ∩, which is an arcuate upper portion, as shown in FIG. 11 (b). The arch shape is suitable for the case where the section of the underground structure is very large since it can effectively support the load acting on the upper part.

또는 ∩ 모양을 가지는 경우에는 강관루프(10)의 내부 토사 제거시 강관루프(10)의 벽체부분 하부에 도갱공(T)을 먼저 형성시킴으로써 토사 제거작업을 용이하게 진행할 수 있다.
The steel pipe loop 10

Or ∩ shape, it is possible to easily carry out the soil removal work by forming the pothole T in the lower part of the wall portion of the steel pipe loop 10 when the inner soil of the steel pipe loop 10 is removed.

The process of constructing the underground structure in the steel pipe loop 10 after the construction of the steel pipe loop 10 is completed includes the steps of disposing the inner space formed by the steel pipe loop 10 and installing the formwork for the underground structure, It can be done in a sensible manner.

When the current method is applied, it is possible to flexibly cope with errors or field conditions occurring during the construction of the steel pipe loop.

When constructing an underground structure by the current method, a temporary vertical stiffener 20 is installed in an empty space formed by removing a part of the gravel in the steel pipe loop 10 and removing the gravel, as shown in FIG. 12, Thereby supporting the steel pipe loop 10 during the construction. The steel pipe as the ground reinforcement 30 may be press-fitted into the lower portion of the portion where the vertical stiffener 20 is installed so that the vertical stiffener 20 can be firmly fixed to the ground.

The process of constructing the underground structure inside the steel pipe loop may be performed by towing and / or propelling the enclosure 40 for an underground structure previously prepared in the work station W. [ Fig. 13 shows how an underground structure is constructed by the propulsion (and / or traction) method of the enclosure 40. Fig.

In the case of applying the enclosure 40 propulsion method, the enclosure 40 is manufactured during the process of constructing the steel pipe loop and the enclosure 40 is pushed into the space of the steel pipe loop 10 after the construction of the steel pipe loop is completed, The air can be shortened and the enclosure 40 can be manufactured in the open space, so that the enclosure 40 can be easily manufactured and the enclosure 40 of stable quality can be manufactured.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be obvious that various modifications may be made within the scope of the idea. It is therefore intended that such modifications are within the scope of the invention as set forth in the claims.

10: Steel pipe loop 40: Housing
100: Steel pipe for loop 110: Steel pipe for main
111: Strut 112: Ring-type diaphragm
120: coupling tube 121: insertion part
122: exposed portion 130: reinforcement metal
C: Concrete G: Grouting
H: Coupling groove M: Multifunctional hole
P: Through hole Su: Upper slab part
Sl: Lower slab portion

Claims (17)

A structure of a steel pipe for a loop constituting a steel pipe loop constructed for construction of an underground structure,
The loop steel pipe 100 includes a main steel pipe 110 constituting the body of the steel pipe loop 10 and a main steel pipe 110 attached to one side of the outer surface of the main steel pipe 110 to connect the main steel pipes 110 in parallel, (120) which can form an adhesive layer (10);
A coupling groove H into which a part of the coupling pipe 120 of the adjacent loop steel pipe 100 is inserted is formed in the direction of the adjacent loop steel pipe 100B on the cross section of the main steel pipe 110;
The coupling pipe 120 is inserted into the main steel pipe 110 of the other-direction adjacent-loop steel pipe 100C through the coupling groove H formed in the main steel pipe 110 of the steel pipe 100C for the adjacent- , And an exposed portion (122) facing the external soil;
Characterized in that a plurality of multifunctional holes (M) are formed in the longitudinal direction of the exposed portion (122) of the coupling pipe (120).
The method according to claim 1,
Wherein the main steel pipe (110) is a composite pipe in which two or more steel pipes are joined in parallel.
The method according to claim 1,
Wherein the coupling pipe (120) is arranged in parallel with two spaced distances corresponding to the width of the coupling groove (H) per one main steel pipe (110).
The method of claim 3,
Wherein a plurality of through holes (P) are formed in the longitudinal direction at a position intermediate the separation distance of the coupling pipes (120) on the cross section of the main steel pipe (110).
The method according to claim 1,
Wherein the main steel pipe (110) is provided with a bracket (111) parallel to the width direction of the binding groove (H) and adjacent to both end portions in the width direction of the binding groove (H) Structure of steel pipe.
The method according to claim 1,
And a ring-shaped diaphragm (112) is installed in the main steel pipe (110).
A work station is constructed before and after a section where an underground structure is to be installed and a plurality of loop steel pipes 100 are inserted into a position where an underground structure is to be installed to form a steel pipe loop 10, A method of constructing an underground structure including a process of constructing an underground structure,
The formation of the steel pipe loop (10)
a multi-function hole (M) is formed by attaching a coupling pipe (120) having a plurality of multifunctional holes (M) in the longitudinal direction on one side of a main pipe (110) Preparing a plurality of steel tubes (100) for a loop to be adhered so as to face a gap between outer surfaces of the tubes (110);
b) press-fitting one loop steel pipe (100) at the reference position;
c) After removing the debris in the main steel pipe 110 of the steel pipe 100 for the loop that has been press-fitted, a subsequent press-in loop is formed in the direction of the steel pipe 100 for the loop to be subsequently inserted on the cross- Forming a coupling groove (H) into which a part of the coupling pipe (120) of the steel pipe (100 ') is inserted;
d) In a state in which the position on the mouth surface of the binding pipe H of the steel pipe 100 for the front press-in loop and the binding pipe 120 constituting the steel pipe 100 'for the subsequent press-fitting loop are made to coincide with each other, 100 ') to bind steel pipes 100, 100' for two loops);
e) joining the main pipe 110 of the steel pipe 100 and the connecting pipe 120 of the steel pipe 100 'for the next press-fitting loop to the joining groove of the steel pipe 100 H) width and the outer surface of the coupling pipe 120 of the steel pipe 100 'for the subsequent press-fitting loop;
f) completing the steel pipe loop 10 by repeating the steps c) to e) and placing the concrete C in each main steel pipe 110,
After the completion of the step e) or the step f), the grout material is injected into the coupling pipe 120 to grout (G) the main steel pipes 110 through the multi-function hole M of the coupling pipe 120 Wherein the step of constructing the loop pipe (100) is carried out by using the multi-purpose coupling pipe (100).
8. The method of claim 7,
The step (a) or (c) is characterized in that a brace 111 is provided in the main steel pipe 110 so as to be parallel to the width direction of the binding groove H and adjacent to both ends in the width direction of the binding groove H A method of constructing an underground structure by applying a steel pipe for a loop having a multi-purpose binding pipe.
8. The method of claim 7,
The looped steel pipe 100 manufactured in the step a) is manufactured so that two coupling pipes 120 per one main steel pipe 110 are arranged in parallel with a distance corresponding to the width of the coupling groove H Wherein the steel pipe for a loop having the multi-purpose binding pipe is applied to the underground structure.
10. The method of claim 9,
And a plurality of through holes P are formed in the longitudinal direction at a middle position of the coupling pipes 120 on the end surface of the main pipe 110. The loop pipe for multi- A method of constructing a structure.
11. The method of claim 10,
The reinforcing steel material 130 arranged in the lateral direction of the steel pipe loop 10 is installed by means of the binding groove H and the through hole P before the concrete C is inserted in the step f) Wherein the steel pipe for a loop having the multi-purpose binding pipe is applied to the underground structure.
12. The method of claim 11,
The concrete C is filled in only a part of the inside of the main steel pipe 110 in the step f) and the part where the concrete C is not filled is removed after the concrete C is cured. A method of constructing an underground structure by applying a steel pipe for a loop having a plurality of slabs.
8. The method of claim 7,
Wherein the main steel pipe (110) of the steel pipe (100) for a loop is a composite pipe in which two or more steel pipes are joined together in parallel, wherein the steel pipe for a loop having the multi-purpose coupling pipe is applied.
8. The method of claim 7,
The upper slab portion Su of the steel pipe loop 10 is formed by press-fitting the steel pipe 100 for the loop in the width direction of the steel pipe loop 10 and the remaining portion is formed by the steel pipe 100 for the loop, The roof steel pipe 100 constituting the upper slab portion Su penetrates through one surface of the roof steel pipe 100 located at the uppermost one of the roof steel pipes 100 constituting the wall portion, Wherein the steel pipe for a loop having the multipurpose coupling pipe is applied to the underground structure.
8. The method of claim 7,
Wherein the steel pipe loop (10) is constructed up to the lower slab portion (Sl), and is formed in a generally rectangular shape.
8. The method of claim 7,
The process of constructing an underground structure in the steel pipe loop 10 is performed by a moving method in which an inner space formed by the steel pipe loop 10 is crushed and a formwork for an underground structure is installed and concrete is laid A method of constructing an underground structure by applying a steel pipe for a loop having a multi-purpose binding pipe.
8. The method of claim 7,
The process of constructing an underground structure inside the steel pipe loop 10 is performed by pulling and / or propelling the enclosure 40 for an underground structure manufactured in advance at a work station. A method of constructing an underground structure by applying a steel pipe for a loop.

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