KR102151496B1 - Underground continuous wall structure of concrete steel composite and construction method there of - Google Patents

Abstract

The present invention relates to a concrete-steel composite underground continuous wall structure and a method for constructing an underground structure using the same. According to the present invention, the concrete-steel composite underground continuous wall structure comprises: steel materials including a pair of first steel plates, one or more second steel plates, and joints; and concrete integrated with the steel materials. According to the present invention, construction costs can be reduced.

Description

Underground continuous wall structure of concrete steel composite and construction method there of}

The present invention relates to a concrete steel composite underground continuous wall structure and a method of constructing an underground structure using the same, and more particularly, by placing concrete inside the steel to form an integrated wall, the rigidity of the entire underground continuous wall even with a thin thickness It is related to a concrete steel composite underground continuous wall structure that can increase not only the perfect ordering, but also a construction method for an underground structure using the same.

In general, as the depth of an underground structure built on the ground increases, a soil barrier construction to safely support earth pressure and underground water pressure is being performed.

As a conventional soil barrier construction method, a construction method using an H-pile and an earth plate is used. This method is a method of making an earth wall by inserting an earth plate between the H-pile while excavating the H-pile at regular intervals. It has the advantage that it can be applied to all soils. It is not possible, and the bending stiffness of the wall is weak, and there is a problem that the back ground is subsided due to poor backfilling.

As a prior art for solving the above problems, a concrete composite steel sheet pile and construction method have been disclosed in Korean Patent Publication No. 10-2010-0072510. This prior art is a form in which concrete is placed inside the flange of the steel pile, and the concrete is positioned on the compression side of the steel pile to increase the flexural stiffness of the overall wall and reduce the horizontal displacement.

In addition, in Korean Patent Publication No. 10-0862385, a rectangular board pile, a wall structure using the same, and a construction method thereof have been registered. This prior art is a configuration capable of securing support against earth pressure and minimizing bending deformation by connecting the main body and the adjacent main body with a connecting ring, and then filling the main body with a filling material to form a square board pile.

However, since the above-described conventional techniques do not have a continuous filling structure, there is a limit to preventing deformation due to earth pressure because the rigidity of the wall is not large.

In addition, since it cannot be used as a wall of an underground structure, there is a problem in that a wall of the underground structure must be separately formed.

In addition, since the main body and the adjacent main body are connected by a connecting ring, there is a problem in that water leakage cannot be completely blocked.

Republic of Korea Patent Publication No. 10-2010-0072510 Korean Patent Publication No. 10-0862385

The present invention was conceived to solve the above problems, and an object of the present invention is to use the integrated wall by placing concrete inside the steel connected by a sliding coupling method as the wall of the present structure, so that temporary facilities are not required. It saves time and construction cost, and the stiffness of the wall is large, so it can sufficiently resist earth pressure even with a thin thickness, excellent underground space utilization, and minimize damage to adjacent structures in urban construction, and It is to provide a concrete steel composite underground continuous wall structure and a method of constructing an underground structure using the same.

The concrete steel composite underground continuous wall structure according to an exemplary embodiment of the present invention includes a pair of first steel plates arranged side by side to be spaced apart from each other, at least one second steel plate connecting the pair of first steel plates in a direction perpendicular to each other, and the Steel materials including joints provided at both ends of a pair of first steel plates; And arranging the steel materials connected to each other in the horizontal direction by using a joint in the excavation part of the ground, and being poured into the inner space formed by the first steel plate and the second steel plate of the connected steel materials to be integrated with the steel materials. Concrete; Including, wherein the connected steel materials include second steels disposed between first steels and the first steels, and a joint of the first steels is provided at an end of the first steel plate. It includes a locking part extending in a direction crossing the first steel plate, and the joint of the second steel materials is provided at an end of the first steel plate and includes a receiving part surrounding the locking part, and the locking part and the receiving part are vertically After sliding in the longitudinal direction, separation in the transverse direction can be prevented.

A plurality of studs protruding in a transverse direction to the second steel plate, and after being coupled to the plurality of studs, both ends may further include reinforcing bars bent in a direction parallel to the first steel plate.

A block steel plate provided on one side of the steel materials, and a coupler provided on a surface of the block steel plate may be further included, and a slab reinforcement or stud may be coupled to the coupler.

The second steel materials further include a tip proximal inlet portion inserted deeper than the first steel material, and an inner space formed by the first steel plate and the second steel plate in the tip proximal inlet, an outer space of the first steel plate, and the surrounding ground of the tip proximal inlet The root-injection fixing solution is filled to the tip, and the root-injection fixing solution may be filled in the near-entry fixing solution through an injection tube inserted into the receiving part.

The upper end of the tip proximal portion further includes a finishing plate for separating the second steel material vertically, wherein the finishing plate includes an inner plate disposed in an inner space formed by the first steel plate and the second steel plate, and the first steel plate It may include an outer plate disposed on the outside of.

A tip plate may be further included at a lower end of the tip proximal portion to block a lower portion of the second steel material.

The lower portion of the front end plate may further include outer protrusions spaced apart from each other along the circumference of the front end plate and protruding downward, and inner protrusions spaced apart from each other on the inside of the front end plate and protruding downward.

In addition, the method of constructing an underground structure using a concrete steel composite underground continuous wall structure according to an example of the present invention includes forming an excavation part in the ground, connecting and inserting the steel materials in the horizontal direction in the horizontal direction in the excavation part, and the connected steel material A wall construction step in which concrete is poured into the interior space of the building and integrated with the steel materials; An excavation step of installing studs on the steel materials exposed to the excavated ground while completely excavating the ground of the inner space formed by the connected steel materials; A floor construction step of installing a waterproof sheet under the excavation portion on which the excavation has been completed, arranging reinforcing bars on the upper side of the waterproof sheet to be connected to the steel material, and then pouring concrete to form a floor plate; A slab construction step of forming a slab for pouring concrete after arranging reinforcing bars on the upper side of the floor plate to be connected to the steel material; It can be installed in order.

In addition, the method of constructing an underground structure using a concrete steel composite underground continuous wall structure according to another example of the present invention includes forming an excavation part in the ground, and connecting and inserting the steel materials in the horizontal direction in the horizontal direction in the excavation part, and the connected A wall construction step in which concrete is poured into the inner space of the steel materials and integrated with the steel materials; An excavation step of installing studs on the steel materials exposed to the excavated ground while partially excavating the ground in the inner space formed by the connected steel materials; An upper slab construction step of forming an upper slab by placing reinforcing bars on the upper side of the excavated ground so as to be connected to the steel material, and then pouring concrete; An additional excavation step of installing studs on the steel materials exposed to the additional excavated ground while further excavating a lower side of the upper slab; A lower slab construction step of forming a lower slab by pouring concrete after arranging reinforcing bars on the additional excavated ground so as to be connected to the steel material; It can be installed in order.

According to the present invention, by using the integrated wall by pouring concrete inside the steel connected by the sliding coupling method as the wall of the present structure, temporary facilities are unnecessary, so there is no waste of construction period and construction cost due to temporary facility installation and demolition, Due to the large rigidity of the wall, it can sufficiently resist earth pressure even with a thin thickness, excellent utilization of the underground space inside the continuous wall in a limited site, minimizing damage to adjacent structures in urban construction, and integrated with concrete. Perfect order is possible because the steel plate forms the outer skin.

1 is an exploded perspective view of a concrete steel composite underground continuous wall structure according to an example of the present invention
2 is a plan configuration diagram of FIG. 1
3 is a perspective view of a concrete steel composite underground continuous wall structure according to an example of the present invention
Figure 4 is a plan configuration diagram of Figure 3
Figure 5 is a state diagram of installing the finishing plate on the second steel of the present invention
6 is a bottom view of the front end plate of the present invention
7 to 25 are construction process diagrams of the concrete steel composite underground continuous wall structure to which the present invention is applied

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, when it is determined that a detailed description of a related known configuration or function interferes with an understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the constituent elements of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but another component between each component May be “connected”, “coupled” or “connected”.

1 to 4, a concrete steel composite underground continuous wall structure according to an example of the present invention will be described.

The concrete steel composite underground continuous wall structure according to an example of the present invention may include steel materials connected to each other and concrete 130 that is poured into the steel materials and integrated with the steel materials.

The connected steels may include first steels 110 and second steels 110 ′ disposed between the first steels 110.

The first steel material 110 and the second steel material 110 ′ are one or more materials that connect a pair of first steel plates 111 and a pair of first steel plates 111 arranged side by side to be spaced apart from each other in an orthogonal direction. It may include two steel plate 112. That is, the first steel material 110 and the second steel material 110 ′ may be formed in an H shape or a ㅍ shape. In addition, the first steel material 110 and the second steel material 110 ′ may include joints 120 provided at both ends of the pair of first steel plates 111.

The steel materials may be disposed while being connected to each other in a horizontal direction, which is a horizontal direction, using a joint 120 at an excavation portion of the ground.

A plurality of studs 113 may protrude from the second steel plate 112 in the transverse direction. The stud 113 may be coupled to the second steel plate 112 by welding or the like. A reinforcing bar 114 may be coupled to the stud 113 by welding or the like. The reinforcing reinforcing bar 114 has a central portion fixed to the stud 113 by welding or the like, and both ends thereof may have a'C' shape that is bent in a direction parallel to the first steel plate 111. The stud 113 and the reinforcing bar 114 can increase the structural rigidity of the continuous wall structure by allowing the concrete to be integrated with the steel material. That is, the concrete 130 and the steel surrounding the concrete and the stud 113 and the reinforcing reinforcing bar 114 that are combined with the steel and buried in the concrete are completely integrated, so that the rigidity of the continuous wall structure can be dramatically increased.

One side of the first steel plate 111, for example, a block steel plate 115 may be provided inside the underground structure. The block steel plate 115 may be coupled to the first steel plate 111 by welding or bolts. Couplers 116 may be combined and provided on the surface of the block steel sheet 115 by welding or the like. Slab reinforcement or studs may be coupled to the coupler 115. The block steel plate 115 may be installed on the entire first steel plate 111, installed at a specific location, or installed at a location where a slab is installed.

The joint 120 may be provided at both ends of the first and second steels 110 and 110 ′, that is, at both ends of the first steel plate 111. The joint 120 may include a locking portion 121 or a receiving portion 122. That is, a locking portion 121 may be formed on one side of the steel material of the connection point, and a receiving portion 122 may be formed on the other side.

The locking part 121 may be provided in a direction crossing the first steel plate 111. That is, the locking part 121 may be provided in a direction orthogonal to the first steel plate 111 or may be provided in an inclined direction. The locking part 121 may be formed in a flat plate shape, a V shape, a C shape, or the like. The locking portion 121 may be integrally formed with the first steel plate 111 or may be welded to the first steel plate 111.

The receiving portion 122 may be provided in a shape with one side open at the end of the first steel plate 111 to accommodate the locking portion 121. The locking portion 121 may be slidingly inserted and coupled through the open portion of the receiving portion 122. The receiving portion 122 may be formed in a'C' shape or the like. The receiving portion 122 and the locking portion 121 are slidably coupled in the vertical direction in the vertical direction, that is, the locking portion 121 is inserted into the interior of the receiving portion 122 and is locked, thereby separating it in the horizontal direction. Can be prevented.

The concrete 130 may be poured into an internal space formed by the first and second steel plates of the connected steel materials. Concrete 130 to be poured into the inside of the steel material may permeate into the receiving portion 122 and be poured. The concrete 130 may form a concrete-steel composite underground continuous wall structure by being integrated with the steel materials. Accordingly, since the concrete steel composite underground continuous wall structure of the present embodiment does not require additional temporary facilities, it is possible to prevent waste of construction period and construction costs due to temporary facility installation and demolition. In addition, due to the composite structure of concrete steel, the stiffness of the wall is large, so it can sufficiently resist earth pressure even with a thin thickness. In addition, the utilization of the underground space inside the continuous wall is very excellent in a limited site, and damage to adjacent structures can be minimized in urban construction. In addition, perfect ordering is possible because the steel plate integrated with the concrete forms the outer shell.

The second steels 110 ′ may further include a tip proximal portion 140 inserted deeper than the first steel 110. The second steel materials 110 ′ may be provided with the above-described receiving part 122, and the first steel material 110 may be provided with the above-described locking part 121. The tip proximal portion 140 may be separately coupled to the second steel material 110 ′ by welding or the like, but may be formed by extending the second steel material 110 ′ to a longer length.

Referring to FIG. 5, the tip proximal portion 140 may include a finishing plate 141 and a tip plate 142. The finishing plate 141 is provided on the upper end of the tip proximal portion 140 to separate the second steel material 110 ′ vertically. That is, the finishing plate 141 may be provided at the upper end of the tip proximal portion 140 to separate the inner space and the outer space of the second steel material 110' vertically.

The closing plate 141 may include an inner plate 141a and an outer plate 141b. The inner plate 141a may be disposed in an inner space formed by the first steel plate 111 and the second steel plate 112 to divide the inner space. The outer plate 141b may be disposed outside the first steel plate 111 on the same plane as the inner plate 141a. The inner plate 141a and the outer plate 141b may be coupled by welding or the like. The inner plate 141a and the outer plate 141b may have a circular circumference.

Referring to FIG. 6, the tip plate 142 may be provided at the lower end of the second steel material 110 ′, that is, at the lower end of the tip proximal part 140 so as to block the lower part of the distal proximal part 140. The tip plate 142 may be coupled to the lower end of the tip proximal portion 140 by welding or the like. The tip plate 142 may include an outer protrusion 142a and an inner protrusion 142b.

The outer protrusions 142a may be disposed in plurality along the circumference of the tip plate 142 to be spaced apart by a predetermined distance, and protrude downward.

The inner protrusion 142b may be disposed to be spaced apart from each other inside the front end plate 142 and protrude downward. Ends of the outer protrusions 142a and the inner protrusions 142b are formed to be inclined so that they can be easily embedded in the ground. The outer protrusions 142a and the inner protrusions 142b are inserted into the ground so that the steel material can maintain a stable state.

The tip proximal part 140 may be filled with a proximal part fixing solution 140 ′. The proximal fixed liquid 140 ′ may integrate the ground near the proximal proximal part 140 and the proximal proximal part 140. That is, the inner space formed by the first steel plate 111 and the second steel plate 112 of the tip proximal portion 140, the outer space of the first steel plate 111, and the proximal ground of the tip proximal portion 140 The semen 140 ′ may be filled and integrated with the distal proximal portion 140. The proximal portion fixing solution 140 ′ may be performed through the injection tube 20 inserted into the receiving portion 122. That is, after inserting the injection tube 20 into the receiving portion 122, the near-injection fixing solution 140 ′ is pressurized and injected through the lower portion and the open portion of the receiving portion 122.

As for the near-entry fixing liquid 140 ′, concrete having a greater strength than concrete placed inside the steel may be used. The proximal portion fixing solution 140 ′ is surrounded by the steel material, the upper end plate 141 and the lower end plate 142, and is simultaneously combined and integrated to firmly support the continuous wall structure.

The tip proximal portion 140 is fixed to the rock mass of the ground while being spaced apart at regular intervals, thereby greatly improving the stability of the underground structure.

The following describes the construction process of an underground structure using a concrete steel composite underground continuous wall structure according to an example of the present invention. The configuration of the underground continuous wall structure may refer to the above-described configuration.

First, it is possible to prepare steel materials in which a pair of first steel plates 111 arranged side by side to be spaced apart from each other are connected by one or more second steel plates 112. A plurality of studs 113 are joined to the second steel plate 112 by welding, etc. in the transverse direction at regular intervals, and the reinforcing reinforcing bar 114 is coupled to the plurality of studs 113 coupled in the transverse direction by welding, etc. I can. In addition, the engaging portion 121 is coupled to the end of the first steel plate 111 of the first steel material 110 by welding or the like, and the receiving portion (in the end of the first steel plate 111 of the second steel material 110 ′) 122) can be combined by welding or the like. In addition, a tip proximal inlet 140 may be formed at a lower end of the second steel 110 ′ to be inserted deeper into the excavation portion of the ground than the first steel 110. The tip proximal part 140 is separated by attaching the finishing plate 141 to the second steel material 110 ′ by welding, etc., and the tip plate 142 is welded at the lower end of the second steel material 110 ′. Can be attached with. The tip proximal portion 140 may be formed by having the second steel material 110 ′ longer than the first steel material 110, or may be formed by attaching a separate member.

Referring to FIGS. 7 to 11, the excavation portion into which the first steel material 110 and the second steel material 110 ′ manufactured by the above process are inserted may be excavated into the ground. The first excavation portion 10 into which the second steel material 110 ′ is inserted may be excavated to the rock layer through an excavator such as an auger screw and via a soil layer, which is an excavation depth. When excavating the soil layer, a casing can be used.

When the first excavation part 10 is excavated, the second steel material 110' is lifted using heavy equipment, and then inserted into the first excavation part 10, which is provided at the lower end of the second steel material 110'. The distal proximal portion 140 may be inserted to be located in the rock layer. At this time, the tip plate 142 of the tip proximal portion 140 is seated on the rock layer, and at the same time, the outer protrusions 142a and the inner protrusions 142b protruding from the tip plate 142 may be lodged on the bottom surface of the rock layer. If necessary, the second steel material 110 ′ may be hit.

When the second steel material 110 ′ is inserted into the first excavation part 10 so that the tip proximal part 140 is located in the rock layer, the injection pipe 20 is inserted into the receiving part 122 of the joint 120. can do. After the injection tube 20 is inserted to the lower end of the receiving part 122, the root-injection fixing liquid 140' is pressurized through the injection pipe 20, and the root-injection fixing liquid 140' is the injection pipe 20 ) May be discharged to the tip proximal inlet 140 through the injection hole formed on the bottom and side surfaces of the ). That is, the near-entry fixing solution 140' is a space between the rock layer and the front end plate 142, the first steel plate 111 between the closing plate 141 and the front end plate 142 separating the front end portion 140, and It is filled in the inner space formed by the second steel plate 112, the outer space of the first steel plate 111, and the surrounding ground of the tip proximal inlet 140, and the proximal fixative liquid 140' is in the distal proximal inlet 140. When filled, the injection pipe 20 may be separated from the receiving part 122 in a state in which the supply of the near-entry fixing liquid 140 ′ is stopped.

The near-entry fixing solution 140 ′ refers to the size of the first excavated portion 10 and the tip proximal portion 140 excavated in the rock layer and injecting only the amount capable of forming the tip proximal portion 140 in the rock layer. It may be preferable, and the rock layer and the tip proximal part 140 may be integrally formed as the proximal part fixing liquid 140 ′ filled in the distal proximal part 140 is cured.

Referring to FIG. 12, after excavating the third excavation portion 12 so as to be adjacent to the first excavation portion 10 on which the second steel material 110' is installed, the first steel material is used as the third excavation portion 12. (110) can be inserted. At the same time, the engaging portion 121 of the joint 120 provided in the first steel material 110 is slidably coupled to the receiving part 122 provided in the second steel material 110' in the vertical direction in the vertical direction, It is seated on 140, and separation in the transverse direction can be prevented.

When the locking portion 121 is seated on the tip proximal portion 140 through the receiving portion 122, the second drilling portion 11 is excavated so as to be adjacent to the third drilling portion 12, and then the second The second steel material 110 ′ may be inserted into the excavation part 12. At the same time, the injection pipe 20 is inserted into the receiving part 122 to which the locking part 121 is not coupled, and the root-injection fixing solution 140 ′ through the injection pipe 20 is inserted into the tip proximal inlet part 140 and the ground around it. Can be filled in.

When the near-entry fixing solution 140 ′ is filled in the tip proximal inlet portion 140, the injection pipe 20 may be withdrawn from the receiving portion 122 while supplying the near-entry fixing solution 140 ′ is stopped.

The formation of the excavation portion can be performed in various ways. That is, as described above, after one steel material is inserted, adjacent excavation units may be excavated, or, unlike the above-described method, adjacent excavation units may be excavated first, and then the steel materials may be sequentially inserted.

Referring to FIG. 13, the above process is repeated on the ground at a location spaced apart from the first excavation portion 10 on which the second steel material 110 ′ is installed, that is, a distance to accommodate the first steel material 110 The second excavation portion 11 is excavated, and the second steel material 110' is inserted into the second excavation portion 11, and the receiving portion of the joint 120 provided in the second steel material 110' Through 122, the root-intake fixing solution 140' may be filled in the tip-root-intake portion 140 to be fixed.

When the second steel material 110 ′ is fixed to the first and second drilling parts 10 and 11, respectively, the second steel material 110 ′ fixed to the first and second drilling parts 10 and 11 ) The third excavation portion 13 may be excavated in the ground between, and the first steel material 110 may be inserted into the third excavated portion 13. At this time, the locking portion 121 of the joint 120 provided in the first steel material 110 is vertically positioned in the receiving portion 122 of the joint 120 provided in the second steel material 110 ′ on both sides. Since it is sliding in the longitudinal direction, separation in the transverse direction can be prevented. The excavation order of the excavation unit is not limited to the above-described embodiment. That is, the third and second drilling portions 13 and 11 may be sequentially excavated. In addition, the excavation unit may be first excavated in succession and then the steel materials may be inserted.

The locking part 121 is coupled to the receiving part 122 and is seated in the distal proximal part 140, that is, the proximal part fixing liquid 140 ′ filled in the joint 120, thereby completing the engagement. Since both sides of 121) are in contact with the inner surface of the receiving part 122 and move, accurate construction may be possible.

Referring to FIGS. 14 to 15, when the steel materials are installed according to the above-described embodiments, concrete is poured into the inner space of the steel materials to form the underground continuous wall 100. Concrete pouring can be performed after all the steel materials are installed, or can be performed simultaneously while the steel materials are installed.

As the concrete 130 and the steel are integrated, even if the thickness of the underground continuous wall 100 is thin, since the stiffness of the entire underground continuous wall 100 is increased, the area of use inside the underground continuous wall 100 can be increased in a limited site. . In addition, since the steel plate on which the concrete is poured acts as a formwork, temporary facilities are not required, so the construction cost and construction period due to temporary facility installation and demolition can be reduced, and the steel plate integrated with the concrete forms the outer shell, so that perfect ordering can be possible. .

Referring to FIGS. 16 to 21, after digging the ground inside the underground continuous wall 100 formed by the above process to a certain depth, the steel materials may be supported by the support material 30. In addition, it may be installed by inserting a pile into the underground continuous wall 100 as needed.

The block steel plate 115 is coupled to one side of the steel materials of the underground continuous wall 100 while excavating the inside of the underground continuous wall 100 by welding, etc., and through a coupler 116 fixed to the surface of the block steel plate 115 Studs can be installed. In addition, the slab reinforcement may be coupled to the coupler 116 on which the slab of the underground structure is formed. The block steel plate 115 may be fixed in advance before inserting the steel materials into the ground.

After digging the inside of the underground continuous wall 100 to the depth of excavation, a waterproof sheet is installed, reinforcement is laid, and floor concrete is poured, and the basement wall and the lower and upper slabs are sequentially poured for each step to complete the underground structure. can do.

In addition, referring to FIGS. 22 to 25, the underground structure may be formed by a reverse punching method in which the upper slab and the basement wall are placed and then dug is repeated.

In the above, even if all the constituent elements constituting an embodiment of the present invention have been described as being combined into one or operating in combination, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all the constituent elements may be configured or operated by selectively combining one or more. In addition, terms such as "include", "consist of" or "have" described above mean that the corresponding component may be present unless otherwise stated, excluding other components Rather, it should be interpreted as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: underground continuous wall 110,110': first steel and second steel
111: first steel plate 112: second steel plate
113: stud 114: rebar
115: block steel plate 116: coupler
120: joint 121: locking portion
122: receiving part 130: concrete
140: tip proximal portion 141: finishing plate
141a: inner plate 141b: outer plate
142: tip plate 142a: outer protrusion
142b: medial protrusion 140': proximal fixation

Claims (11)

A pair of first steel plates arranged side by side to be spaced apart from each other, at least one second steel plate connecting the pair of first steel plates in a direction perpendicular to each other, and joints provided at both ends of the pair of first steel plates Steel materials; And
Concrete in which the steel materials are connected to each other in the horizontal direction by using a joint in the excavation part of the ground and placed in an inner space formed by the first and second steel plates of the connected steel materials to be integrated with the steel materials Including ;,
The connected and arranged steels include first steels and second steels disposed between the first steels,
The joints of the first steels are provided at an end of the first steel plate and include a locking part extending in a direction crossing the first steel plate, and the joints of the second steels are provided at an end of the first steel plate. Includes a receiving portion surrounding the locking portion,
The locking portion and the receiving portion are slidably coupled in the vertical direction in the vertical direction, and then separation in the transverse direction is prevented,
The second steels further include a tip proximal inlet that is inserted deeper than the first steel,
The inner space formed by the first steel plate and the second steel plate of the tip proximal part, the outer space of the first steel plate, and the ground around the distal proximal part are filled with a proximal fixative to be integrated with the distal proximal part,
The filling of the near-entry portion fixing solution is performed through an injection tube inserted into the receiving portion,
Further comprising a finishing plate for separating the second steel material vertically at the upper end of the proximal end portion,
The finishing plate includes an inner plate disposed in an inner space formed by the first steel plate and the second steel plate, and an outer plate disposed outside the first steel plate,
Further comprising a tip plate blocking a lower portion of the second steel material at a lower end of the tip proximal portion,
The proximal part fixing liquid is injected through the lower and open parts of the receiving part by pressurizing injection through the injection holes formed on the bottom and side surfaces of the injection pipe, and the proximal part fixing liquid injected through the lower part of the receiving part is filled into the lower part of the front end plate. And, the near-entry fixing liquid injected through the opening is filled in the inner space formed by the first steel plate and the second steel plate of the distal proximal part, the outer space of the first steel plate, and the surrounding ground of the distal proximal part. Composite underground continuous wall structure.
The method according to claim 1,
Concrete steel composite underground continuous wall structure further comprising a plurality of studs protruding in the transverse direction to the second steel plate, and reinforcing reinforcing bars bent in a direction parallel to the first steel plate after being coupled to the plurality of studs at both ends. The method according to claim 1,
Further comprising a block steel plate provided on one side of the steel materials, and couplers provided on the surface of the block steel plate,
Concrete steel composite underground continuous wall structure in which slab reinforcement or studs are coupled to the coupler. delete delete delete The method according to claim 1,
A concrete steel composite basement further comprising outer protrusions spaced apart from each other along the circumference of the distal plate and protruding downward from the lower part of the distal plate, and inner protrusions spaced apart from each other and protruding downward from the inside of the distal plate Continuous wall structure. A wall construction step in which an excavation part is formed in the ground, the steel materials are connected and inserted in the horizontal direction in the excavation part, and concrete is poured into the inner space of the connected steel materials to be integrated with the steel materials;
An excavation step of installing studs on the steel materials exposed to the excavated ground while completely excavating the ground of the inner space formed by the connected steel materials;
A floor construction step of installing a waterproof sheet under the excavation portion on which the excavation has been completed, arranging reinforcing bars on the upper side of the waterproof sheet to be connected to the steel material, and then pouring concrete to form a floor plate;
A slab construction step of forming a slab for pouring concrete after arranging reinforcing bars on the upper side of the floor plate to be connected to the steel material; In order,
The steel materials are provided at both ends of a pair of first steel plates arranged side by side to be spaced apart from each other, at least one second steel plate connecting the pair of first steel plates in a direction perpendicular to each other, and the pair of first steel plates Including a joint that becomes,
The connected and disposed steels include first steels and second steels disposed between the first steels,
The joints of the first steels are provided at an end of the first steel plate and include a locking part extending in a direction crossing the first steel plate, and the joints of the second steels are provided at an end of the first steel plate. It includes a receiving portion surrounding the locking portion, and the locking portion and the receiving portion are slidably coupled in a vertical direction in an up-down direction to prevent separation in a transverse direction,
The second steels include a tip proximal inlet that is inserted deeper than the first steel,
The inner space formed by the first steel plate and the second steel plate of the tip proximal part, the outer space of the first steel plate, and the ground around the tip proximal part are filled with a proximal fixative to be integrated with the distal proximal part,
The filling of the near-entry portion fixing solution is performed through an injection tube inserted into the receiving portion,
Further comprising a finishing plate for separating the second steel material vertically at the upper end of the proximal end portion,
The finishing plate includes an inner plate disposed in an inner space formed by the first steel plate and the second steel plate, and an outer plate disposed outside the first steel plate,
Further comprising a tip plate blocking a lower portion of the second steel material at a lower end of the tip proximal portion,
The proximal part fixing liquid is injected through the lower part and the opening part of the receiving part by pressurizing injection through the injection holes formed on the bottom and side of the injection pipe, and the proximal part fixing liquid injected through the lower part of the receiving part is filled into the lower part of the front end plate. And, the near-entry fixing liquid injected through the opening is filled in the inner space formed by the first steel plate and the second steel plate of the distal proximal part, the outer space of the first steel plate, and the surrounding ground of the distal proximal part. An underground structure construction method using a synthetic underground continuous wall structure.
A wall construction step in which an excavation part is formed in the ground, the steel materials are connected and inserted in the horizontal direction in the excavation part, and concrete is poured into the inner space of the connected steel materials to be integrated with the steel materials;
An excavation step of installing studs on the steel materials exposed to the excavated ground while partially excavating the ground in the inner space formed by the connected steel materials;
An upper slab construction step of forming an upper slab by placing reinforcing bars on the upper side of the excavated ground so as to be connected to the steel material, and then pouring concrete;
An additional excavation step of installing studs on the steel materials exposed to the additional excavated ground while further excavating a lower side of the upper slab;
A lower slab construction step of forming a lower slab by pouring concrete after arranging reinforcing bars on the additional excavated ground so as to be connected to the steel material; In order,
The steel materials are provided at both ends of a pair of first steel plates arranged side by side to be spaced apart from each other, at least one second steel plate connecting the pair of first steel plates in a direction perpendicular to each other, and the pair of first steel plates Including a joint that becomes,
The connected and disposed steels include first steels and second steels disposed between the first steels,
The joints of the first steels are provided at an end of the first steel plate and include a locking part extending in a direction crossing the first steel plate, and the joints of the second steels are provided at an end of the first steel plate. It includes a receiving portion surrounding the locking portion, and the locking portion and the receiving portion are slidably coupled in a vertical direction in an up-down direction to prevent separation in a transverse direction,
The second steels include a tip proximal inlet that is inserted deeper than the first steel,
The inner space formed by the first steel plate and the second steel plate of the tip proximal part, the outer space of the first steel plate, and the ground around the tip proximal part are filled with a proximal fixative to be integrated with the distal proximal part,
The filling of the near-entry portion fixing solution is performed through an injection tube inserted into the receiving portion,
Further comprising a finishing plate for separating the second steel material vertically at the upper end of the proximal end portion,
The finishing plate includes an inner plate disposed in an inner space formed by the first steel plate and the second steel plate, and an outer plate disposed outside the first steel plate,
Further comprising a tip plate blocking a lower portion of the second steel material at a lower end of the tip proximal portion,
The proximal part fixing liquid is injected through the lower part and the opening part of the receiving part by pressurizing injection through the injection holes formed on the bottom and side of the injection pipe, and the proximal part fixing liquid injected through the lower part of the receiving part is filled into the lower part of the front end plate. And, the near-entry fixing liquid injected through the opening is filled in the inner space formed by the first steel plate and the second steel plate of the distal proximal part, the outer space of the first steel plate, and the surrounding ground of the distal proximal part. An underground structure construction method using a synthetic underground continuous wall structure.
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