KR101648836B1 - Under-ground pushing pipe and under-ground structure construction method therewith - Google Patents

Under-ground pushing pipe and under-ground structure construction method therewith Download PDF

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Publication number
KR101648836B1
KR101648836B1 KR1020160012992A KR20160012992A KR101648836B1 KR 101648836 B1 KR101648836 B1 KR 101648836B1 KR 1020160012992 A KR1020160012992 A KR 1020160012992A KR 20160012992 A KR20160012992 A KR 20160012992A KR 101648836 B1 KR101648836 B1 KR 101648836B1
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South Korea
Prior art keywords
steel pipe
compartment
press
pipe body
compartments
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KR1020160012992A
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Korean (ko)
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김진수
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원하종합건설 주식회사
김진수
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/005—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D13/00—Large underground chambers; Methods or apparatus for making them
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

Provided are an underground pushing pipe and an underground structure construction method therewith. The underground pushing pipe of the invention including a plurality of compartments comprises: a side compartment provided on both side parts of the underground pushing pipe, and laterally connected to the underground pushing pipe; an inner compartment providing a working space formed between both side compartments; a guide plate guiding an adjacent side compartment of the underground pushing pipe, and laterally connecting the adjacent side compartment wherein the guide plate is vertically spaced apart on an upper and a lower part of an end of the side compartment; and a tension member buried by penetrating into a penetration hole formed at constant intervals in a longitudinal direction of the side compartment, and firmly connecting the side compartment connection unit by straining in accordance with a size of an underground load applied to a side compartment connection unit laterally connected by each side compartment.

Description

TECHNICAL FIELD [0001] The present invention relates to a pressurized steel pipe body and a method of constructing the same,

The present invention intends to press-fit steel pipe bodies into the ground and to stiffen the lateral connecting portions of the press-fitted steel pipe bodies with each other by using PC steel bars. More specifically, concrete is inserted into the lateral steel pipes adjacent to each other A pressurized steel pipe body having a high structural reliability and easy on-site management by tilting the PC steel bars installed to be pierced through the side compartments to the size of underground load acting on each of the side connecting parts, And a method of constructing an underground structure.

The steel pipe-loop method is a typical construction method of a non-slip-type underground structure that is currently being applied universally.

Such a steel pipe-looping method generally requires that the small-sized small-sized steel pipes 10 and 10a are press-fitted in advance into the ground where the structure is to be formed, as shown in FIG. 1A, to secure a space for simply forming the structure, It is an underground structure (underground tunnel, etc.) construction method with the purpose of using reinforced concrete as an internal space and pouring concrete into a temporary structure or using it as a main structure.

 Such a steel pipe loop method is introduced in various configurations. For example, in the state where the side surfaces of the multi-tubular steel pipes are in contact with each other, the reinforcing bars are inserted through the internal grooves and the concrete is laid so that the transverse rigidity is stabilized. (Patent No. 10-0911457, UPRS method) is disclosed.

More specifically, in the UPRS method, as shown in FIG. 1B, in an inner space secured with a bundle steel pipe body, for example, a reinforcing bar is installed inside a press-fitted steel pipe body 40, tensile tons of structural reinforcement 50). In order to construct reinforcing bars in a steel pipe, the steel pipe is cut into a length of about 1 m to 1.5 m in accordance with the lateral spacing of the steel pipe and the opening size of the steel pipe. The weight of the reinforcing bars should be transported into the steel pipe and the reinforcing bars should be installed by connecting the conveyed reinforcing bars to each other by a coupler so as to be continuously long as a pole across the steel pipe.

Therefore, the UPRS method has a disadvantage in that it is not easy to perform the laying work performed by the attractive force in the narrow steel pipe space, and there is a high possibility of safety accident, and a large amount of reinforcing steel material is installed in the bundle steel pipe, .

In addition, the UPRS method is a concept that a guide formed on one side of a steel pipe during press-fitting of a steel pipe is simply inserted and unbonded below a cut portion on the other side of the steel pipe, and the steel pipe is pressed into the steel pipe. There is a problem that the risk of separation of the steel pipe body is high.

Further, another conventional non-installation type steel pipe loop method is introduced as " a parallel type propulsion steel pipe assembly and a construction method of an underground structure using the same " (Patent No. 0995384). As shown in FIG. 1C, in the STS method, a parallel steel pipe assembly 70 (parallel steel pipe) is pressed in accordance with the shape of the structure to be built in the ground, and then the reinforcing steel bars 60 ), And concrete is laid to construct a steel pipe loop structure.

That is, the STS method is a technical feature in which reinforcing bars, in which fixing plates are coupled to a transverse connection portion between steel pipe assemblies that are urged so as to be adjacent to each other, are installed at regular intervals to strengthen the connection portions. Both sides of the steel pipe are vertically In which a wing plate is provided.

However, in the STS method, since the connecting portion is formed to include the reinforcing bars in the form of a fixing plate coupled thereto, it is difficult to secure a large rigidity at the connecting portion because a large amount of reinforcing bars passing through the steel pipe side walls is restricted There is a problem in that it is inevitable to be used for a temporary structure.

Another conventional non-fitting type steel pipe loop method is disclosed in Korean Patent No. 10-0904857 entitled " Construction Method of Underground Structure Using Steel Pipes and Segments ", which is a non-fitting method in which a steel pipe and a segment are formed as an underground structure. In the underground structure construction method, a wing joint is integrally formed on both sides of a segment, and a stranded wire or a steel rod penetrates a segment through a sheath pipe inserted in a longitudinal direction at an inner center thereof. Then, concrete is inserted into the segment, This is a technique for tensioning and fixing a stranded wire in the interior, wherein a PC stranded wire is installed in a slab and a wall portion formed in the ground to introduce a prestress.

However, in the above-mentioned underground structure construction method, it is necessary not only to install a PC steel line crossing each segment in a narrow steel pipe at both sides, but also to cause an excessive rise in a central portion of the steel pipe when the steel wire is tensed by a member such as a slab or a wall, And secondary damages to the right corner where the upper slab is connected. In addition, in addition to the troublesome work such as molding work and concrete pouring work to form a fixing block in both steel pipes, in case of both steel pipes where the steel wire is installed and tensioned, the caliber becomes too large, .

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a non-removable underground structure having a plurality of steel pipes in the form of a plurality of steel pipes, A plurality of PC steel rods are installed, concrete is laid in the side compartment, and each of the PC steel rods is tightened to strengthen the respective connecting portions, and to provide a method of constructing an underground structure using the same.

According to another aspect of the present invention, there is provided a press-in steel pipe having a pressurized steel pipe body and a pressurized steel pipe body, wherein a prestress is applied to the lateral connection part in accordance with the magnitude of underground load acting on the lateral connection part, And to provide a method of constructing a steel pipe and an underground structure using the same.

It is another object of the present invention to provide a steel pipe in which a steel pipe is installed at the upper slab portion and wall unit in the prior art and a prestress is introduced at both ends of the steel pipe, In which the wall and the upper slab are connected to each other due to the rise of the steel wire in the unit of a member such as a slab or a wall, and the difficulty in installing a steel wire in a narrow space, And to provide a method of constructing an underground structure using the same.

Another object of the present invention is to provide a press-in steel pipe structure in which reinforcing steel reinforcement is placed in a conventional press-fitted steel pipe body by using the steel pipe itself as a structural member by fastening both side portions of adjacent press- The present invention also provides a pressurized steel pipe body and a method of constructing an underground structure using the same, which can reduce the construction cost by greatly reducing the material cost as well as the work.

In order to accomplish the above object, the present invention is as follows.

First, the press-fitting steel pipe body according to the present invention is composed of a side compartment formed on both side portions and an inner compartment located in the middle portion. The left side compartment is connected to the left side of the inner compartment with the inner compartment as the center, and the right side compartment is connected to the right side of the inner compartment. Further, the inner compartment may be composed of one or two, and may be formed in a circular cross section or a rectangular cross section.

Second, a plurality of through holes are formed in the upper and lower portions of the pivotal plate of the side compartment of the steel pipe according to the present invention, and the press-in steel pipes are press-fitted so as to be adjacent to each other laterally. The left and right side compartments of the press- A PC rigid bar penetrating in the direction of the arrow is installed.

Third, after placing concrete in the side compartment, the P.C steel rods are tightened and fixed on the outer side of the lateral compartment. At this time, the tension of the P.C steel rod can be tightened by rotating the nut type fastener using a torque wrench. In this case, the installation of the PC steel bar and the tensioning operation are performed inside the inner compartment.

As a means for achieving the above technical object, the present invention provides a press-fit steel pipe body formed of a plurality of compartments according to the present invention, comprising: a side compartment formed on both sides of a press-in steel pipe body and laterally connected to an adjacent press- An inner compartment formed between the side compartments to provide a space for performing tasks; A guide plate guiding and laterally connecting the side compartments of the adjacent press-fit steel pipe bodies and vertically spaced apart from the upper and lower ends of the side compartment; The PC rigid barrel is provided with through holes formed at upper and lower portions of the side compartment at regular intervals in the lengthwise direction of the side compartment and adapted to the size of the underground load acting on the side connecting parts laterally connected by the respective side compartments of the adjacent press- And tensions that tense the lateral connection to tighten the lateral connection.

The inner compartment may have a circular cross section or a rectangular cross section and may be formed of at least one compartment, and the transverse width of each compartment of the inner compartment may be greater than the transverse width of the compartment.

It is of course possible that the left lateral compartment including the continuous board is formed in a rectangular cross section and the right lateral compartment including the continuous board is formed in a rectangular cross section.

The tension member having a size corresponding to the width of the lateral connection portion and penetrating the through holes; A screed plate for dispersing the prestress caused by the tension of the P.C steel rods into a soft plate and a filled concrete; And a nut type fastening hole formed at both ends of the P.C. steel bar.

As another means for achieving the above technical object, there is provided a method of constructing an underground structure using a press-fit pipe body according to the present invention, comprising the steps of: (a) taking into consideration the cross-sectional shape of an underground structure such as a box shape or an arch tunnel, Pressing each of the sieves sequentially; (b) installing a tension material through the inner compartment in the through-hole of the lateral connection of laterally adjacent side compartments; (c) tightening the lateral connection by tilting the tension member after placing the concrete in the side compartment.

 In the step (c), only the compressive stress can be applied to the lateral connection portions by adjusting the tension forces of the upper and lower portions of the tension members installed at the upper and lower portions of the lateral connection portion.

Since the present invention uses a press-fit steel pipe body composed of a plurality of compartments, it is advantageous in axial buckling of a propeller pipe that can be generated when a pipe is press-fitted, and thus a more effective steel pipe loop structure can be constructed.

In addition, the present invention utilizes the press-in steel pipe body itself as a structural member by tightening each lateral connection portion with a PC steel bar, which is easier to work than the conventional press-in steel pipe body, It is possible to design and construct an economical loop structure that can reduce the construction cost.

In addition, since the present invention introduces the tensional force at a load corresponding to the underground load when the tensional force is introduced into the lateral connecting portion of the inlet pipe, only the compressive stress acts on the connecting portion when the underground load acts. As a result, Tearing and subsequent destruction due to secondary stress concentration does not occur, forming a structurally safe loop.

 In addition, the lateral connection between the press-fit steel pipe bodies is pressurized by fixing the PC steel bar, which is installed through the adjacent side compartment in a state of being filled with concrete, with the tension plate of the side compartment, It is superior in workability and field application than other methods such as reinforcement.

Figs. 1A, 1B and 1C are a perspective view and a cross-sectional view of a connection structure of a conventional steel pipe loop structure,
FIGS. 2A and 2B are perspective views of a press-fit steel pipe body according to an embodiment of the present invention;
2C is a sectional view of the press-fit steel pipe body according to the embodiment of the present invention,
FIG. 3A is a detailed view of a connection portion of a press-fit steel pipe according to an embodiment of the present invention,
FIG. 3B is a conceptual diagram illustrating a stress degree of a connection portion according to an embodiment of the present invention;
4 shows a construction flowchart of a press-fit steel pipe body according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

≪ The press-fitting steel pipe body 100 according to the present invention >

2A and 2B show a perspective view of the press-fitting steel pipe 100 of the present invention.

2A, the press-fitting steel pipe body 100 includes lateral compartments 110 and 120 at both sides, a middle compartment 130 and a guide plate 140 at the center, and a through-hole 160 provided in the continuous plate, Are formed so as to have a constant extension length L in the longitudinal direction, and they are press-fitted one by one in the ground by a propelling jack.

That is, the press-fitting steel pipe body 100 has a box cross-sectional shape having closed multiple compartments in which respective compartments are separated by a continuous plate, side compartments 110 and 120 having lateral connection function are formed on the left and right sides, An inner compartment 130 is provided.

The side compartments 110 and 120 are formed in a rectangular cross section and the inner compartment 130 is formed of a first inner compartment 131 having a circular cross section and a second inner compartment 133 having a rectangular cross section, 100 are formed to have a constant extension length L in the longitudinal direction.

At this time, the left side compartment 110 includes inner and outer pivotal plates 115 and 117, and a rectangular cross section is formed by the inner and outer pivotal plates 115 and 117. The right side compartment 120 is formed with a rectangular cross section including inner and outer straight plates 125 and 127.

The first inner compartment 131 adjacent to the left side compartment 110 is formed in a circular cross section and a part of the circumference is cut at the left side and the vertical distance of the cut portion is coincident with the height of the inner and outer pivotal boards 115 and 117 . In addition, the second inner compartment 133 adjacent to the first inner compartment 131 is formed in a rectangular cross-sectional shape having the same height as the continuous plates 115 and 117. That is, the height of the continuous plate that divides the respective compartments is all the same, and each of the compartments is integrally formed by connecting them in a cascade.

The lateral widths of the first and second inner compartments 131 and 133 are formed to be larger than the lateral widths of the both side compartments 120 and 130. For example, each lateral width of the first and second inner compartments may be formed to be twice the lateral width of both lateral compartments 120, 130.

With this configuration, since the press-inserted steel pipe body composed of a plurality of compartments is used, the present invention is advantageous in the axial buckling of the propeller pipe that can occur when the pipe is press-fitted, thus making it possible to construct a more effective steel pipe loop structure.

Further, since the lateral width of the inner side compartment is formed to be larger than the lateral width of the both side compartments, the tension member formed to have a length corresponding to the lateral width of the laterally- As shown in FIG.

A plurality of through holes 160 are formed on the upper and lower portions of the continuous plates 115, 117, 125 and 127 of the side compartments of the press-fit steel pipe body.

That is, a plurality of through holes 160 are formed in the upper and lower portions of the softening plates 115, 117, 125 and 127 so as to be spaced apart in the longitudinal direction at regular intervals through the both side compartments 110 and 120 and the PC steel bar 151 of the tension member 150 Holes 160, respectively.

The through-hole 160 may be installed at a factory when manufacturing the steel pipe, or may be installed by perforating the pipe after the steel pipe is press-fitted.

A guide plate 140 is attached to one end of the press-fit steel pipe body 100, that is, the upper and lower ends of the end of the right side lid 120, and is formed to have a constant length L, 140 function to appropriately guide the left side compartment 110 to the side and connect the left side compartment 110 when the adjacent press-fit steel pipe body is press-fitted.

It can be seen that one end of the press-fit steel pipe body is formed in a U-shaped cross section, and the other end is formed in a rectangular shape to be press-fitted into the guide plate 140 which is vertically spaced apart. 2B, the left side portion of another press-fit steel pipe body, that is, the left side compartment 110 is guided and press-fitted into the upper and lower guide plates 140 of the press-fitted steel pipe body 100 which is press-

The left side compartments 110 of the other press-fit steel pipes guided by the right side compartment 110 of the press-fit steel pipe body and the guide plate 140 formed in the right side compartment 110 of the press- do. In the state where the press-fitting is completed, each of the through-holes 160 is aligned in the lateral direction in such a manner that the P.C steel bar 151 of the tension member 150 can penetrate. Thereby, a lateral connection portion 170 including adjacent left and right side compartments 120 and 130 and the tension member 150 is formed.

2C is a sectional view of the press-fit steel pipe body according to the embodiment of the present invention.

In FIGS. 2A and 2B, the inner compartment 130 of the press-fit steel pipe has two circular cross sections and a rectangular cross section. However, referring to FIG. 2C, the inner compartment 130 may be formed as one, It is also possible to form the same in a rectangular cross section. In other words, the inner compartment is formed of two pieces, all of which may be formed into a circular cross section or all of them may be formed into a rectangular cross section, and one of them may have a circular cross section and the other may have a rectangular cross section. Further, the inner compartment is formed with one, and may be formed into a circular cross section or a rectangular cross section.

In this case also, the lateral width of the inner compartment 130 is formed to be greater than the lateral width of the both side compartments 110 and 120, preferably the lateral width of the inner compartment 130 is greater than the width of the side compartments 120 and 130 And may be formed twice as wide as the lateral width.

3A is a detailed view of a connection portion of a press-fit steel pipe according to an embodiment of the present invention, and FIG. 3B is a conceptual diagram illustrating a stress of a connection portion according to an embodiment of the present invention.

The press-fit steel pipe body of the present invention is tightened by the tensile member 150 including the PC steel bar 151 and the nut type fastening hole 155 installed through the side connecting part 170 formed by the adjacent side compartment as shown in FIG. 3A .

(Not shown) is formed at both ends of the PC steel bar 151. The length of the steel bar includes the length of the side fixtures 170, that is, the lengths of the fixtures on both sides in the two adjacent lateral compartment lateral widths, The length of the steel bar 151 is formed to be shorter than that of the conventional invention, so that transportation and installation in the press-fit steel pipe can be facilitated.

In addition, a fixing port 155 and a pressure plate are assembled and installed at both ends of the P.C steel rod 151 installed through adjacent side compartments, and this operation is performed in the inner compartment space.

In addition, the tensioning of the PC steel bar 151 in the inner compartment space is performed in a state in which the concrete filled in the side compartments 110 and 120 exhibits proper strength, and the PC steel bar 151 is tensioned according to the design load value And the PC steel bars 151 are fixed to the inner side plates 115 and 125 formed outside the side compartments, respectively.

That is, the tensioning operation of the PC steel rod 151 is performed in a state in which the concrete is tightly filled in the side compartments 110 and 120, and the nut type fixing holes 155 at both ends of the PC steel rod 151 are rotated using a torque wrench, . The prestresses caused by the tensions of the PC steel rods 151 are widely dispersed into the inner soft plates 115 and 125 and the filled concrete portions by the pressure plate 153 so that the connection portions 170 are tightened while compressing the adjacent side compartments 110 and 120 do.

 Therefore, the nut type fastening hole 155 should be made of a rigid material so as to withstand the tensional force introduced into the PC steel rod 151, so that the nut type fastening hole 155 is not damaged by the tension applied to the PC steel rod 151, Even after the PC steel bar 151 is fixed, the side connecting portion 170 can maintain the tension.

FIG. 3B shows the stresses according to the load in the section of the connecting portion A-A according to the embodiment of the present invention.

The stress of the left side shows the stress state of the side connecting portion (AA cross-section) in the introduction of the prestress. In the embodiment of the present invention, the lower PC steel rod 151 is more tensed and the lower portion is in a trapezoidal shape, .

The stress in the center part shows the bending stress developed at the connecting part (A-A section) by the overburden load, showing that the tensile stress below the neutral axis and the compressive stress above the neutral axis increase linearly from the neutral axis respectively.

The stress on the right side shows a result obtained by adding the stress due to the tension of the PC steel rod 151 and the stress due to the overburden load at the connecting portion (AA cross-section), and only the compressive stress is generated over the entire cross- .

In this embodiment, the size of the prestress introduction load of the lower tension member is larger than that of the upper portion. However, depending on the magnitude of the underground load acting on the lateral connection portion, the same prestress may be introduced in the upper and lower portions, It is also possible to introduce it into the steel rod 151.

According to this construction, the lateral joint portion of the present invention introduces the tensional force at a load corresponding to the underground load, so that only the compressive stress always acts on the joint portion (AA end face), so that the widening, tearing, The damage due to concentration does not occur, thereby forming a structurally reliable connection structure, thereby providing a safe steel pipe loop.

In addition, the lateral connection method of the press-in steel pipe body using the PC steel bar 151 of the present invention can prevent the occurrence of the camber and the over-stress in advance by designing the tension force so as to coincide with the underground load acting on each side portion And it is possible to provide a very economical loop-indentation steel pipe structure since the steel pipe compacted body itself is utilized as a structure.

The lateral connection of the press-fit steel pipe body using the PC steel bar 151 according to the present invention can be realized by installing a strand in the steel pipe in the upper slab portion and the wall unit in the prior art and introducing a prestress at both ends, It is difficult to introduce a prestress corresponding to the size of a slab or a wall, and when a steel line tends to rise due to a member of a member such as a slab or a wall, It is difficult to solve the problem.

Further, the present invention is superior in workability and field applicability to other types such as conventional field welding connection and reinforcing steel laying in a manner of laminating the lateral connecting portions of the respective press-fitted steel pipe bodies.

<Method of Construction of Indented Steel Pipe Body 100 According to the Present Invention>

4A and 4B show a method of constructing a press-fit steel pipe according to the present invention.

In the present invention, a method of constructing a box-shaped underground structure is exemplified, but it is also possible to construct an arch tunnel or the like.

Referring to FIG. 4A, a press-in steel pipe 100 is joined and connected to a target ground in a lateral direction and a vertical direction in consideration of a box cross-sectional shape of the underground structure.

First, after the piercing press-fitting steel pipe body 100a is press-fitted into the target ground corresponding to the left or right end of the slab loop A1, the left side compartment 110 of the other press-fit steel pipe body 100b is inserted into the right- The other press-fit steel pipe body 100b is press-fitted so as to be guided by the press-fit steel pipe body 120. [ The press-fit steel pipe body can be press-fitted into a plurality of pieces depending on the size of the target structure. Whereby a slab loop A1 is formed.

Then, the other press-fit steel pipe body 100b is press-fitted continuously in the vertical direction into the side compartment formed on the lower side of the brazed press-fit steel pipe body 100a. Thus, both wall portions A2 are formed.

Also, in the shape of an arch tunnel or the like, unlike the embodiment of the present invention, it can be seen that the slab loop A1 and the wall part A2 are continuously separated and connected in an arch shape.

The PC steel bars 151 are installed through the through holes 160 of the side connecting portion 170 laterally connected by the side compartments 110 and 120 adjacent to each other using the inner compartment 130 after the press- do.

Thereafter, the concrete is poured tightly in the side compartments 110 and 120 where the P.C steel bars 151 are installed.

After the concrete is tightly filled in the side connecting portion 170, a pressure plate and a fixing plate are installed at the end of the PC steel rod 151 in the inner compartment 130, and the PC steel rod 151 is tensioned using a torque wrench . It is preferable that the tension force introduced at this time is appropriately measured and controlled by a gauge meter and that the tension order of the P.C. steel rod 151 proceeds outward from the center of the slab loop.

Accordingly, the reaction force of the nut type fixture 155 is dispersed to the concrete portion filled in the side connection portion 170 through the pressure plate 153, and the side connection portion 170 is tightened while compressing the adjacent side compartments 110 and 120 .

Thereafter, as shown in FIG. 4B, concrete is further filled into the inner compartment, which is the remaining space of each indentation steel pipe formed by the slab loop A1 and the two wall portions A2.

Accordingly, when introducing the tensional force to the lateral connection portion of the inlet pipe, the present invention introduces the tensional force at a load corresponding to the underground load, so that only the compressive stress acts on the lateral connection portion even when the underground load is applied. As a result, a loosening or tearing of the lower portion of the connection portion and thus a destruction due to a secondary stress concentration do not occur, thereby forming a structurally safe loop.

In addition, the lateral connection method of the press-in steel pipe body using the PC steel bar of the present invention can prevent occurrence of camber and over-stress in advance by designing the tension force corresponding to the underground load acting on each side portion, Since the compression body itself is utilized as a structure, it provides a very economical loop-indentation steel pipe structure.

In addition, in the lateral connection between the press-inserted steel pipe bodies according to the present invention, the PC steel bars installed through the adjacent side compartments filled with concrete are tensed and fixed to the inner side plates of the side compartments, respectively, It is superior in workability and field applicability than other methods such as field welding connection and reinforcement.

According to the present invention, the lateral connection of the press-fit steel pipe body using the PC steel bar can be achieved by installing the steel pipe in the upper slab portion and the wall unit in the conventional technique and introducing the prestress at both ends collectively, And it is difficult to install a steel wire in a narrow space as well as a secondary damage to a right corner where a wall and an upper slab are connected to each other due to an upward bulge when a steel wire is tensed due to a member such as a slab or a wall And the like.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Indentation steel pipe body
110: right side compartment 120: left side compartment
130: inner compartment 140: guide plate
150: Tension material 160: Through hole
170:

Claims (6)

In a press-fit steel pipe body formed of a plurality of compartments,
Side compartment (110, 120) formed on both sides of the press-fit steel pipe body (100) and laterally connected to the adjacent press-fit steel pipe body;
An inner compartment 130 formed between the side compartments 110 and 120 to provide a space for performing operations;
A guide plate 140 guiding the side compartment 110 of the adjacent press-fit steel pipe body to be laterally connected and vertically spaced from the upper and lower ends of the side compartment 120; And
The side compartments 110 and 120 are provided at upper and lower portions of the side compartments 110 and 120 so as to penetrate the through holes 160 formed at regular intervals in the longitudinal direction of the side compartments 110 and 120 and are laterally connected by the side compartments 110 and 120 of the adjacent press- And a tensile member 150 which tensions the lateral connection portion 170 in accordance with the magnitude of an underground load applied to the side connection portion 170 in which the concrete is first laid,
The side connecting portions 170, which are smaller than the lateral width of the inner compartment, are tightened by using a space capable of performing the operation of the inner compartment 130 of the adjacent press-fitted steel pipe body, so that the camber occurrence and overstress To prevent the occurrence of the problem. The method according to claim 1,
Wherein the inner compartment (130) has a circular cross section or a rectangular cross section and is formed of at least one compartment. The method according to claim 1,
Wherein the left side compartment 110 including the pivotal plates 115 and 117 is formed in a rectangular cross section and the right side compartment 120 including the pivotal plates 125 and 127 is formed in a rectangular cross section. The method according to claim 1,
A PC rigid bar 151 formed to have a size corresponding to the width of the lateral connection part 170 and passing through the through holes; A pressure plate for dispersing the prestress caused by the tension of the PC steel bar 151 into the concrete filled with the soft steel plates 115 and 125; And a nut type fastening hole (155) formed at both ends of the PC steel rod (151). (a) press-fitting the press-fit steel pipe bodies 100 into the ground sequentially in consideration of a cross-sectional shape of an underground structure such as a box shape or an arch tunnel;
(b) installing a tension member (150) through the inner compartment (130) in the through-hole (160) of the lateral connection part (170)
(c) tightening the lateral connection portion (170) by tilting the tension member (150) after placing the concrete in the side compartment (110, 120); And
(d) filling the concrete in the inner compartment 130, which is the remaining space of each indentation steel pipe formed by the slab loop A1 and the wall A2,
The pressurized steel pipe body 100 of the step (a) is formed with lateral compartments 110 and 120 formed on both sides of the pressurized steel pipe body 100 and laterally connected to the adjacent pressurized steel pipe body. An inner compartment 130 formed between the side compartments 110 and 120 to provide a space for performing operations; A guide plate 140 guiding the side compartment 110 of the adjacent press-fit steel pipe body to be laterally connected and vertically spaced from the upper and lower ends of the side compartment 120; And a through hole 160 formed at upper and lower portions of the side compartments 110 and 120 at regular intervals in the longitudinal direction of the side compartments 110 and 120. The side compartments 110 and 120 of the adjacent press- And a tensile member (150) for tensing the lateral connection portion (170) in accordance with the magnitude of underground load acting on the side connection portion (170) in which the concrete is first laid,
The side connecting portions 170 are made smaller than the lateral width of the inner compartment using a space capable of performing the operation of the inner compartment 130 of the adjacent press-fitted steel pipe body, so that the camber of the press- A method of constructing an underground structure using a press-fit steel pipe body to prevent occurrence of stress. 6. The method of claim 5,
Wherein in the step (c), only the compressive stress is applied to the lateral joint portion (170) at all times by differently controlling the tension of the upper and lower portions of the tension member (150) provided at the upper and lower portions of the lateral joint portion Construction method of underground structure using.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101736094B1 (en) * 2016-08-22 2017-05-16 윤인병 Tube assembly and construction method of loop structure using the same
KR101769255B1 (en) 2016-12-15 2017-08-24 장성호 Steel Pipe Assembly for Roof Structure
CN113175335A (en) * 2021-05-25 2021-07-27 中铁南方投资集团有限公司 Prestress connecting device of small-diameter pipe curtain structure and construction method thereof
CN115492598A (en) * 2022-09-27 2022-12-20 中铁第四勘察设计院集团有限公司 Tunnel linear excavation method of single guide pipe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080004434A (en) * 2007-12-20 2008-01-09 유필수 A constructing method of underground structure using steel pipe and segment
KR101208419B1 (en) * 2012-03-12 2012-12-05 주식회사 삼진그린건장 Box structure and construction method for underground structure using the same
KR101257215B1 (en) * 2012-11-21 2013-04-23 윤인병 Roof structures and method for constructing thereof
KR101556674B1 (en) * 2015-05-18 2015-10-01 윤인병 Steel pipe assembly and construction method of steel pipe structure using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080004434A (en) * 2007-12-20 2008-01-09 유필수 A constructing method of underground structure using steel pipe and segment
KR101208419B1 (en) * 2012-03-12 2012-12-05 주식회사 삼진그린건장 Box structure and construction method for underground structure using the same
KR101257215B1 (en) * 2012-11-21 2013-04-23 윤인병 Roof structures and method for constructing thereof
KR101556674B1 (en) * 2015-05-18 2015-10-01 윤인병 Steel pipe assembly and construction method of steel pipe structure using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101736094B1 (en) * 2016-08-22 2017-05-16 윤인병 Tube assembly and construction method of loop structure using the same
KR101769255B1 (en) 2016-12-15 2017-08-24 장성호 Steel Pipe Assembly for Roof Structure
CN113175335A (en) * 2021-05-25 2021-07-27 中铁南方投资集团有限公司 Prestress connecting device of small-diameter pipe curtain structure and construction method thereof
CN115492598A (en) * 2022-09-27 2022-12-20 中铁第四勘察设计院集团有限公司 Tunnel linear excavation method of single guide pipe

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