KR101690561B1 - Trenchless construction method of underground structures - Google Patents

Abstract

The present invention relates to a trenchless construction method of underground structures using a steel pipe compound and a panel and, more specifically, relates to a trenchless construction method of underground structures comprising: an upper structure forming step; a wall structure forming step; a lower structure forming step; an underground structure manufacturing step; an underground structure arrangement step; and an underground structure installation step. According to the present invention, a shape of a steel pipe compound and a panel is simple to conveniently manufacture a material, and construction is easy to reduce a construction time and construction costs. Moreover, the shape of an underground structure is able to be simplified to reduce production costs for the underground structure.

Description

[0002] Trenchless construction method of underground structures [

This embodiment relates to a construction method of a non-installed underground structure.

There are construction methods and non-construction methods for construction of tunnels and underground roads through the crossing work on existing roads and railways.

The installation method is a general method of installing underground structures and filling up the soil after the ground is removed from the surface of the earth. However, the installation method has problems such as the control of the walking and the vehicle operation during the working period. Therefore, in order to solve this problem, many non-installation methods have been developed in which an underground structure can be installed while maintaining the topography without occupying an upper road or railroad.

The non-adherent method is a method in which a concrete enclosure is manufactured and then a solid body is pulled up to a construction site using a reaction force band and a hydraulic jack, and a shape of an underground structure is inserted by inserting various types of steel pipes along the outer periphery of the excavation cross- A pipe loop method for constructing an underground structure in the inside of a loop after the excavation is completed by directly supporting the loop by the support material while drilling the lower part of the loop, And a pipe loop structure method in which reinforced concrete is placed in a steel pipe to be used as a main structure of an underground structure.

Since the underbody structure in the non-installation method is manufactured before the underground structure is installed in the ground, it is easier to control the quality than the construction method in which the reinforcing bars are assembled in the inner and lower parts of the steel pipe loop and the concrete is laid in the field as in the case of the pipe loop construction method. So that it is possible to secure a high-quality quality. Accordingly, various methods have been proposed in the above-mentioned jacking-up method depending on the shape of the steel pipe, whether it is extracted or not, and a front jacking method is typically used.

In the front jacking method, a steel pipe is press-fitted to the outer side of a planned tunnel, an underground driveway, and the lower part of a loop composed of press-fitted steel pipes is excavated while a PC jacket is used to pull an underground structure It is a method to install an underground structure at a location. The front jacking method is advantageous in that quality control is easy since the underground structure is manufactured in advance by the concrete and the concrete of the underground structure has already reached the predetermined strength so that the safety of the underground structure and the operator during the installation work of the underground structure can be secured .

However, in the related art, when the underground structure is pulled, the ground is disturbed by the interval between the outer circumferential surface of the underground structure and the outer circumferential surface of the press-fitted steel pipe structure, so that there is a possibility that settlement may occur in the upper road and railroad.

In addition, the press-fitted steel pipe structure is buried and can not be recycled, which is uneconomical because the construction cost is increased.

Further, even when the steel pipe structure or the like is drawn out by pushing, the frictional force with the ground is large, so that the drawing is not easy or a large pressure input is required.

In addition, since the structure of the steel pipe structure or the like to be press-fitted in advance is complicated, it is difficult to manufacture and the cost is high, and it is structurally weak.

Patent 1: Korean Patent No. 10-0800028 Patent 2: Korean Patent No. 10-0800029 Patent 3: Korean Patent No. 10-1161332 Patent 4: Korean Patent No. 10-1324173 Patent 5: Korean Patent No. 10-1573706

In order to solve the above-mentioned problems, the present invention provides a method for constructing a tunnel, an underground driveway, and the like through a crossing construction at a lower portion of an existing road or railway using a simple steel pipe composite and a panel, It is possible to reduce the construction period and the construction cost and to simplify the shape of the underground structure to reduce the manufacturing cost of the underground structure and to reduce the cost of the underground structure between the outer periphery of the underground structure and the press- It is possible to reuse the steel pipe composite and the panel because it is possible to extrude and collect the press-fit steel pipe composite and the panel, thereby providing an economical construction method of the unfolded underground structure .

Further, the underground structure is manufactured in advance, and then the upper structure and the wall structure and / or the lower structure formed by the steel pipe composite and the panel are pushed out and installed in place to easily place the underground structure in a position to be constructed by the steel pipe composite and the panel It is possible to provide an underground structure which is structurally robust and safe because it can be easily installed and the underground structure is manufactured in advance and provides a construction method of an underground structure for securing the safety of the underground structure and the operator during the installation work of the underground structure I want to.

In addition, by constituting the steel pipe composite with a steel pipe disposed at the center thereof and four frames formed by the first frame and the second frame and arranged and joined along the outer circumferential direction of the steel pipe, Since the edges of the second frame are supported on the steel pipe while the first frame and the second frame form a quadrilateral closed structure and the bending stiffness of the steel pipe composite is increased, friction with the ground And to provide a construction method of a non-installed underground structure in which the steel pipe composite can withstand even a small amount of time.

It is another object of the present invention to provide a method of constructing an unfolded underground structure in which a supporting member is entirely brought into contact with an outer surface of a steel pipe and a steel pipe and a frame can be tightly coupled tightly with each other by providing an arc- .

The present invention also provides a method of constructing an unfolded underground structure capable of easily and tightly coupling a steel pipe composite with a panel by slidingly fitting the steel pipe composite and the panel into each other.

In addition, some panels among the plurality of panels forming the upper structure, the wall structure and the lower structure are provided with the expansion joints to adjust the width of the panel, thereby changing the width, height, etc. of the underground structure, The present invention provides a method of constructing an unfolded underground structure capable of easily changing width and height of an upper structure, a wall structure, and a lower structure.

In addition, the steel pipe composite located at the lowermost part of the wall structure is constituted by a separating structure in which the lower part can be separated, and the rail is provided inside the steel pipe, thereby making it possible to pressurize the underground structure more quickly, easily, We want to provide the construction method of the structure.

The present invention also provides a method of constructing an unfolded underground structure capable of press-fitting and pulling out a steel pipe composite and a panel with a simple and small force by further providing a steel pipe composite and a sliding plate on the panel.

According to an exemplary embodiment of the present invention, there is provided a method of constructing a non-built-in underground structure using a steel pipe composite and a panel, the method comprising constructing a plurality of the steel pipe composite and a plurality of the panels alternately corresponding to an upper slab of the underground structure Forming an upper structure by arranging the upper structure and press-fitting it into the ground; Forming a wall structure by alternately arranging a plurality of the steel tube composite and the plurality of panels in a manner corresponding to the wall slab of the underground structure and press-fitting the plurality of panels into the ground; Forming a lower structure by alternately arranging a plurality of the steel pipe composite bodies and the plurality of panels so as to correspond to a lower slab of the underground structure and press-fitting the plurality of the steel pipe complexes into the ground to form a lower structure; An underground structure manufacturing step of fabricating an underground structure composed of the upper slab, the wall slab, and the lower slab; Placing an underground structure in which the upper slab, the wall slab, and the lower slab of the underground structure correspond to the upper structure, the wall structure, and the lower structure, respectively; And installing an underground structure in which the underground structure is press-fitted to push out the upper structure, the wall structure and the lower structure, and the underground structure is installed in its place, wherein the steel pipe composite includes a steel pipe disposed at the center, And four frames arranged and connected along an outer circumferential direction of the steel pipe, wherein each of the four frames is composed of a first frame of a letter-shaped shape joined to the outer periphery of the steel pipe and having an overall shape of a square shape, And a second frame which is pivotally coupled to the inside of the one frame, wherein the second frame is installed in contact with the outer surface of the steel pipe.

According to another aspect of the present invention, there is provided a method of constructing a non-built-in underground structure using a steel pipe composite and a panel, the method comprising the steps of: Forming an upper structure by alternately arranging the panels and pressing them into the ground to form an upper structure; Forming a wall structure by alternately arranging a plurality of the steel tube composite and the plurality of panels in a manner corresponding to the wall slab of the underground structure and press-fitting the plurality of panels into the ground; A rail mounting step of installing a rail inside the steel pipe of the steel pipe composite at the lowermost part of the wall structure; An underground structure manufacturing step of fabricating an underground structure composed of the upper slab and the wall slab; Placing an underground structure in which the upper slab and the wall slab of the underground structure correspond to the upper structure and the wall structure, respectively; Installing an underground structure for pressing the underground structure to push out the upper structure and the wall structure, and installing the underground structure in place; And a lower slab forming step of forming a lower slab of the underground structure after excavating the ground on the inner side of the underground structure. The steel pipe composite includes a steel pipe disposed at the center, Wherein each of the four frames includes a first frame of a pseudo-shape, the first frame being coupled to the outer periphery of the steel pipe and having an overall shape of a square shape, Wherein a corner of the second frame is provided in contact with an outer surface of the steel pipe, and a steel pipe composite body at the lowermost portion of the wall structure of the steel pipe composite body has no frames on both sides of the lower portion thereof, And the lower structure of the underground structure can be separated.

Further, the separation structure is characterized in that the steel pipe is divided into an upper part and a lower part, L-shaped steel is coupled to both ends of the separated lower steel pipe, a small L-shaped steel is coupled to a horizontal flange of each of the L- And both ends of the separated upper steel pipe are inserted between the vertical flange of the small L-shaped steel and the vertical flange of the small L-shaped steel, and are then fastened with bolts and nuts.

The separation structure may further include a vertical member coupled to the inner surface of the separated lower steel pipe, a horizontal member coupled with the vertical member, and a rail coupled to the upper side of the horizontal member.

Further, the first frame of the steel tube composite may further include a first sliding part coupled to the side surface in the longitudinal direction and slidingly engaged with the panel.

In addition, the first sliding portion may be in a shape of a letter, a letter, or a letter.

Further, it may further comprise an arc-shaped support member coupled to an edge of the second frame, wherein the support member is installed in contact with the side surface of the steel pipe as a whole.

In addition, the steel tube composite further includes a sliding plate provided on an outer side and / or an inner side of the steel pipe, and the sliding plate is coupled to the steel pipe with bolts and nuts, and the head of the bolt has a round shape, And the nut may be disposed inside the steel pipe, and the nut may be blown from the inside of the steel pipe, and then the bolt may be buried in the ground.

Further, the panel may include a second sliding portion provided at an end thereof.

Further, the second sliding part may be a combination of a crescent shape, a one-letter shape, a one-letter shape, and a long letter C shape on one side, which are tightly coupled with the first sliding part and slide thereon .

In addition, a part of the plurality of panels may be provided with a stretching / contracting portion to adjust the width.

In addition, the extensible portion may be double-folded after the flanges are separated into two, and the overlapping flanges may be combined by bolts and nuts to adjust the width.

Through the present invention, it is possible to construct a tunnel, an underground driveway, and the like through a crossing construction at the lower part of existing roads and railways by using a simple steel pipe composite and a panel, It is possible to reduce the construction cost and simplify the shape of the underground structure so that it is possible to reduce the manufacturing cost of the underground structure and a gap is not generated between the outer circumferential surface of the underground structure and the press- There is no risk of settlement, and further, the press-fit steel pipe composite and panel can be extruded and recovered, thereby enabling the steel pipe composite and panel to be reused, thereby providing an economical effect.

Further, the underground structure is manufactured in advance, and then the upper structure and the wall structure and / or the lower structure formed by the steel pipe composite and the panel are pushed out and installed in place to easily place the underground structure in a position to be constructed by the steel pipe composite and the panel It is possible to provide an underground structure in a structurally robust and safe manner and to secure the safety of an underground structure and an operator during installation work of the underground structure.

In addition, by constituting the steel pipe composite with a steel pipe disposed at the center thereof and four frames formed by the first frame and the second frame and arranged and joined along the outer circumferential direction of the steel pipe, Since the edges of the second frame are supported on the steel pipe while the first frame and the second frame form a quadrilateral closed structure and the bending stiffness of the steel pipe composite is increased, friction with the ground It is possible to provide an effect that the steel tube composite can withstand well.

Further, by providing the arc-shaped support member at the corner of the second frame, it is possible to provide an effect that the support member is entirely in contact with the outer surface of the steel pipe, and the steel pipe and the frame are tightly joined tightly.

In addition, since the steel pipe composite and the panel are slidably fitted to each other, it is possible to provide an effect that the steel pipe composite and the panel can be easily and tightly coupled.

In addition, some panels among the plurality of panels forming the upper structure, the wall structure and the lower structure are provided with the expansion joints to adjust the width of the panel, thereby changing the width, height, etc. of the underground structure, The width and the height of the upper structure, the wall structure, and the lower structure can be easily changed and applied.

In addition, the steel pipe composite located at the lowermost part of the wall structure is constituted by a separating structure in which the lower part can be separated, and the rail is provided inside the steel pipe, thereby providing an effect that the underground structure can be pressed into the ground more quickly, easily and stably can do.

Further, by providing the steel pipe composite and the sliding plate on the panel, it is possible to provide an effect that the steel pipe composite and the panel can be easily inserted and drawn out with a small force.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a steel pipe composite of the method of constructing a non-installed underground structure according to an example of the present invention. FIG.
Fig. 2 is a cross-sectional view showing a state in which a support member is provided on a second frame of the steel tube composite of Fig. 1. Fig.
3 is a cross-sectional view showing a state in which the steel tube composite of FIG. 1 is provided with a separation structure.
4 is a cross-sectional view showing a panel of a construction method of a non-installed underground structure according to an example of the present invention.
FIGS. 5A and 5B are views showing a state in which the expansion joint is provided on the panel of FIG. 4. FIG.
6A to 6C are cross-sectional views illustrating a steel pipe composite and a panel of a non-installed underground structure construction method according to an exemplary embodiment of the present invention, respectively fitted with a first sliding portion and a second sliding portion.
7A and 7B are perspective views illustrating a procedure in which a steel pipe composite and a panel of the method of constructing an unfenced underground structure according to an exemplary embodiment of the present invention are slidably inserted by the first sliding portion and the second sliding portion.
FIG. 8 is a cross-sectional view showing an upper structure forming step in the method of constructing a non-installed underground structure according to an example of the present invention.
9A and 9B are cross-sectional views illustrating steps of forming a wall structure in the method of constructing a non-installed underground structure according to an example of the present invention.
10 is a cross-sectional view showing the substructure forming step of the method of constructing a non-installed underground structure according to an example of the present invention.
FIG. 11 is a cross-sectional view illustrating an underground structure manufacturing step in the method of constructing a non-installed underground structure according to an example of the present invention.
12 is a cross-sectional view showing an underground structure disposal step of the unfrozen underground structure construction method according to an example of the present invention.
FIG. 13 is a view showing a step of installing an underground structure in the construction method of a non-installed underground structure according to an example of the present invention.
14 is a sectional view showing a construction method of a non-installed underground structure according to another example of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to refer to like elements throughout the drawings, even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, May be "connected "," coupled "or" connected ".

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a construction method of a non-installed underground structure according to an example of the present invention will be described in detail with reference to the drawings.

The method of constructing a non-installed underground structure according to an exemplary embodiment of the present invention uses a steel pipe composite 10 and a panel 20.

Referring to FIG. 1, a steel pipe composite 10 according to an exemplary embodiment of the present invention includes a steel pipe 12 disposed at the center of the steel pipe composite 10, and a post-welded steel pipe 12 disposed along the outer circumferential direction of the steel pipe 12. And the like.

The frame 14 may be composed of a first frame 141 and a second frame 142, which are L-shaped. The first frame 141 is connected to the outer periphery of the steel pipe 12 by welding or the like so that the entire four frames of the first frame 141 form a square shape. The entire outer surface of the steel pipe composite 10 and the panel 20 to be described later is formed in a straight line so as to be in good agreement with the outer surface of the underground structure 50 to be installed, It does not cause loosening, disturbance, settlement, etc. of the ground.

The second frame 142 is connected to the first frame 141 at an inner side of the first frame 141 so that the corner of the second frame 142 is in contact with the outer surface of the steel pipe 12. That is, the second frame 142 is joined to the first frame 141 by welding or the like to form a closed square, thereby increasing the structural strength of the first frame 141. Therefore, a problem that the first frame 141 is twisted or broken when the steel tube composite body 10 is press-fitted into the ground is prevented. Further, the second frame 142 is supported by the steel pipe 12 at its edge, so as to better support the external force acting on the first frame 141. Also, since the steel tube composite 10 can be manufactured using the conventional standardized steel pipe 12, it is simple and easy to manufacture.

The steel pipe composite body 10 is provided with a sliding plate 30 on the outer side and / or the inner side surface thereof to reduce the friction with the ground surface so that the steel pipe composite body 10 can be more easily press- 50) The press-fitting of the underground structure 50 is facilitated by separating the slide plate 30 from the steel pipe 12 during press-fitting. Here, the outer side refers to the outer side of the underground structure 50, and the inner side refers to the inner side of the underground structure 50. The sliding plate 30 is coupled to the steel pipe 12 of the steel pipe composite body 10 with bolts and nuts. The head of the bolt is arranged on the outside of the steel pipe 12 and is formed in a round shape so as to reduce the friction with the ground, and the nut is disposed inside the steel pipe 12. When the steel tube composite 10 is press-fitted into the ground structure and then discharged into the underground structure 50 by press-fitting and discharging the steel tube composite 10 into the ground structure, the nut is inserted from the inside of the steel pipe 12 After loosening, the bolt is hit and buried in the ground. Therefore, when the steel pipe composite 10 is press-fitted, the sliding plate 30 remains on the ground, and only the steel pipe composite 10 is pushed out, so that the underground structure 50 can be easily press-fitted.

2, an arc-shaped support member 145 may be coupled to an edge of the second frame 142 of the steel pipe composite body 10. In addition, The support member 145 is formed in a arc shape and is installed in contact with the outer surface of the steel pipe 12 as a whole so that the reaction force of the ground applied to the first frame 141 is closely contacted with the steel pipe 12 .

Referring to FIG. 3, the steel tube composite 10 may be constructed as a separate structure from which the lower portion of the steel pipe 12 can be separated. In this case, the frame 14 is not provided on both sides of the lower portion of the steel pipe composite body 10, but the frame 14 is provided only on both sides of the upper portion, and the rail 18 can be installed inside the separate lower steel pipe. Therefore, when the steel tube composite body 10 is press-fitted into the ground, the steel tube composite body 10 is press-fitted in the joined state, and the upper and lower portions of the separated steel pipe 12 are separated before the underground structure 50 is press- The underground structure 50 can be pressed into the ground more quickly and easily through the rail 18. [

The separation structure is a structure in which the steel pipe 12 is divided into an upper part and a lower part. In order to facilitate the fastening and separation of the separated upper steel pipe and the lower steel pipe, an L-shaped steel pipe 16 and a small L- . That is, the L-shaped steel 16 is coupled to each of both ends of the separated lower steel pipe, and the small L-shaped steel 161 is joined to the horizontal flange of each of the L- Both ends of the separated upper steel pipe may be inserted between the vertical flanges of the L-shaped section 161 and then fastened with bolts and nuts.

Referring to FIG. 4, the panel 20 of the method of constructing an unfenced underground structure according to an exemplary embodiment of the present invention may include a second sliding portion 24 provided at an end thereof. The panel 20 is installed in parallel with the outer surface or the inner surface of the steel pipe composite 10. The second sliding portion 24 is provided at the end of the panel 20 and tightly coupled with the first sliding portion 143 of the steel pipe composite body 10 to prevent leakage of the ground, And the panel 20 to be slid smoothly. Further, by providing the sliding plate (30) on the outer side surface of the outer panel and the inner side surface of the inner panel, it is easy to press-fit the panel (20) and the underground structure (50) into the ground. That is, when the underground structure 50 is press-fitted, the nut is loosened similarly to the above-described steel pipe composite body 10, and the bolts are struck with the ground to press-fit the slip plate 30, Extruded.

The plurality of steel tube composite bodies 10 and the plurality of panels 20 are alternately arranged so as to correspond to the upper slab 51, the wall slab 52 and the lower slab 53 of the underground structure 50 to be installed, The upper structure 54, the wall structure 55, and the lower structure 56 can be formed. As described above, it is possible to support the ground by forming the upper structure 54, the wall structure 55, and the lower structure 56 with the plurality of steel tube composite 10 and the plurality of panels 20, ) And the steel pipe composite 10, the number of the steel pipe composite 10 can be reduced, which is very economical.

Referring to FIGS. 5A and 5B, the panel 20 may have a stretchable portion capable of adjusting its width. In other words, the panel 20 can be divided into two and overlapped with each other, and the width can be adjusted by forming a plurality of bolt holes in the overlapped panel 20, selecting the bolt holes, and combining them with bolts and nuts. Therefore, when the width, height, and the like of the underground structure 50 change due to design and construction errors or when the steel pipe composite 10 and the panel 20 are recycled, the width, height, etc. of the underground structure 50 The width and height of the upper structure 54, the wall structure 55 and the lower structure 56 can be easily changed via the extensible portion of the panel 20 without having to separately fabricate the panel 20 . Further, it is not necessary to precisely manufacture the panel 20 in accordance with the width, height, etc. of the underground structure 50 to be installed, so that it is easy to manufacture and construct and is simple.

6A to 6C, the panel 20 may have a second sliding portion 24 at an end thereof. That is, when the upper structure 54, the wall structure 55, and the lower structure 56 are formed, the steel pipe composite 10 and the panel 20 are slidably engaged with each other. In the steel pipe composite 10, The first sliding portion 143 provided on the side surface of the panel 20 and the second sliding portion 24 of the panel 20 are used for sliding coupling so that the steel tube composite 10 and the panel 20 are tightly and tightly coupled . That is, the first sliding portion 143 and the second sliding portion 24 are slidingly coupled to each other, thereby preventing the soil of the ground from penetrating into the interior, and stably maintaining the structure such as the upper structure 54 and the like.

The first sliding part 143 is provided on one side of the first frame 141 which is in the shape of a letter, but in the case of the steel tube composite body 10 provided at the point where the slab structure and the wall structure 55 are connected, . The second sliding portion 24 is provided at an end portion of the panel 20. The first sliding portion 143 may be shaped like a letter (see FIG. 6A), a letter L (see FIG. 6B), or a letter L (see FIG. 6C) (See FIG. 6A), a one-letter shape (see FIG. 6B), or a combination of a one letter shape and a long letter C shape on one side (see FIG. 6C). That is, the first sliding portion 143 and the second sliding portion 24 are tightly coupled with each other, and in particular, the upward and downward flows of the steel tube composite body 10 and the panel 20 are prevented in the case of FIG. 6A, The composite steel pipe 10 and the panel 20 are prevented from being separated from each other and the upward and downward flows of the steel pipe composite 10 and the panel 20 are prevented from being widened.

7A, when the upper structure 54 is formed, the first steel pipe composite 10 is first press-fitted while the ground is being excavated, and the first panel 20 is partially press-fitted along the press-fitted steel pipe composite 10 The panel 20 is pressed into the ground and the lower portion of the panel 20 is excavated after the second steel pipe composite 10 is press-fitted while the ground is excavated along the panel 20. The number of the steel pipe composite 10 and the panel 20 is determined in consideration of the width of the upper slab 51 of the underground structure 50 to be installed. In the case of the upper structure 54, it is simple to install only the outer panel which normally contacts the outer surface of the steel tube composite body 10, and in special cases, an inner panel which is in contact with the inner surface may be provided.

7B, when the wall structure 55 is formed, the steel pipe composite 10 is press-fitted while digging the ground, and the steel pipe composite 10 is sandwiched between the inner panel and the outer panel along the press- A part of the panel 20 is press-fitted with the upper and lower steel tube composite 10 as a support and the part of the lower steel tube composite 10 is partially press-fitted and the panel 20 is press- And the press-fitting is completed. The number of the steel tube composite body 10 and the panel 20 forming the wall structure 55 is also determined in consideration of the height of the wall slab 52. In this case also, the steel pipe composite body 10 is provided on the lowermost side.

This embodiment can simplify the construction of the steel pipe composite 10 and the panel 20 so that the material can be easily manufactured and the construction can be simplified and the shape of the underground structure 50 can be simplified. There is no possibility that a gap is formed between the outer circumferential surface of the underground structure 50 and the press-fitted steel pipe composite 10 or the panel 20 at the time of installation so that the ground is disturbed and is not settled. In addition, since the press-fitted steel pipe composite 10 and the panel 20 can be extruded and recovered, it is possible to reuse the steel pipe composite 10 and the panel 20, which is economical, Tunnels, underground roads, etc. can be built without hindrance.

The lower structure 56 is the same as the upper structure 54 but differs from the upper structure 54 in that an outer panel that is in contact with the outer surface of the steel tube composite 10 is provided together with an inner panel that is in contact with the inner surface. Of course, both the inner structure and the outer structure may be installed in the upper structure 54 and the lower structure 56, or an inner or outer structure may be provided.

8 to 13, the method of constructing a non-installed underground structure according to an exemplary embodiment of the present invention includes a step of forming an upper structure, a step of forming a wall structure, a step of forming a substructure, a step of forming an underground structure, And an underground structure installation step. For a detailed description of the structure included in the construction method of the non-installed underground structure, see the above description.

8, the upper structure forming step includes alternately arranging a plurality of the steel tube composite 10 and the plurality of panels 20 so as to correspond to the upper slab 51 of the underground structure 50, and the first sliding part 143 And the second sliding portion 24 are slidably engaged with each other to form the upper structural body 54. In this step, The upper structure 54 is adjusted such that the steel tube composite 10 is installed at both ends and the first sliding portion 143 is provided in the lower direction in the case of the steel tube composite body 10 provided at both ends. Further, in the case of the panel 20 installed in the upper structure 54, a panel 20 provided with an expansion joint is used when necessary. In the case of the steel pipe composite body 10, the panel 20 can be press-fitted while being excavated from the front, and in the case of the panel 20, the outer panel can be press-fitted and then the lower ground can be excavated or the panel 20 can be press- . The panel 20 having the expansion joint can be installed in one or more places. The width of the panel 20 is set in advance and fixed with bolts and nuts, and then press-fitted into the ground.

9A and 9B, in the step of forming the wall structure, a plurality of steel tube composite bodies 10 and a plurality of panels 20 are alternately arranged so as to correspond to the wall slab 52 of the underground structure 50, Thereby forming the wall structure 55. The internal and external panels and the steel tube composite 10 are partially pressed together in contact with the steel tube composite 10 at both ends of the upper structure 54 and the inner and outer panels and the steel tube composite 10 are alternately press-fitted. In this case, press-fitting can be proceeded while excavating the front of the inner panel and the steel pipe composite body 10. In addition, depending on the shape of the underground structure 50, one or more wall structures 55 may be provided not only at both ends of the upper structure 54 but also in the middle thereof. Also, when the wall structure 55 is formed, the panel 20 provided with the expansion / contraction portion can be press-fitted, if necessary. And the steel pipe composite body 10 is arranged at the lowermost end of the lower structure 56.

10, a plurality of steel tube composites 10 and a plurality of panels 20 are alternately arranged so as to correspond to the lower slab 53 of the underground structure 50, 56). In this step, the panel 20 is provided with both the inner panel and the outer panel, and the panel 20 having the expansion / contraction portion can be used if necessary.

The order of forming the upper structure, the wall structure, and the lower structure may be changed as necessary. The upper structure 54 and the lower structure 56 can be formed by first forming the lower structure 56 and forming the wall structure 55 and the upper structure 54 or by first forming the wall structure 55 have. Also, in the case of forming each structure, it is possible to proceed from one side to the other in order, or from the middle to both sides.

The underground structure manufacturing step is a step of manufacturing an underground structure 50 composed of the upper slab 51, the wall slab 52 and the lower slab 53 as shown in FIG. It is possible to manufacture and use a simple form of the underground structure 50 by using the simple structure of the steel pipe composite 10 and the panel 20. In addition, before the underground structure 50 is installed, So that it is possible to secure a structurally robust and safe underground structure 50 and secure the safety of the operator at the time of installing the underground structure 50 in a step to be described later.

The upper slab 51, the wall slab 52 and the lower slab 53 of the underground structure 50 are separated from the upper structure 54, the wall structure 55, So as to correspond to the substructure 56. This step may be unnecessary by adjusting its position well when fabricating the underground structure 50. This step may also refer to pulling the underground structure 50 spaced apart from the upper structure 54 or the like such that it touches the upper structure 54 or the like.

13, in the step of installing an underground structure, the underground structure 50 is pressed to push the upper structure 54, the wall structure 55 and the lower structure 56, and the underground structure 50 ). That is, while digging a quadrangular inner ground formed of the upper structure 54, the wall structure 55 and the lower structure 56, the underground structure 50 is pulled and pulled by using the reaction force band, The panel 20 is extruded and recovered. The substructure 54, the wall structure 55, and the substructure 56 formed in the above-described steps can be easily and easily installed at a position where the underground structure 50 is to be installed. At this time, when the steel pipe composite 10 of the upper structure 54, the wall structure 55, and the lower structure 56 and the slip plate 30 are provided on the panel 20, before the underground structure 50 is press- The nut of the bolt and the nut that join the steel pipe 12 and the sliding plate 30 is loosened from the inside of the steel pipe 12 and the bolt is buried in the ground. This allows the underground structure 50 to be pressed easily when the underground structure 50 is press-fitted so that the slide plate 30 remains when the upper structure 54, the wall structure 55 and the lower structure 56 are pushed.

Referring to FIG. 14, an underground structure 50 may be constructed using a steel pipe composite 10 formed as a separate structure according to another embodiment. That is, the structure is formed only by the upper structure 54 and the wall structure 55, and the lower-most steel pipe composite 10 of the wall structure 55 is formed as the separation structure. The underground structure 50 is formed by the lower slab 53, It is possible to apply the method of forming the lower slab 53 by forming and press-fitting the underground structure 50 formed only of the upper slab 51 and the wall slab 52, This method is advantageous in that the underground structure 50 can be easily press-fitted into the underground structure 50 without the load of the underground structure 50 acting on the pressurized ground.

This construction method includes an upper structure forming step, a wall structure forming step, a rail mounting step, an underground structure forming step, an underground structure placing step, an underground structure setting step, and a lower slab forming step, Refer to the description above for a detailed description of the structures included in the construction method of underground structures.

The upper structure forming step is a step of alternately arranging the plurality of steel tube composite 10 and the panel 20 so as to correspond to the upper slab 51 of the underground structure 50 and press-fitting them into the ground to form the upper structure 54, Reference will be made to the embodiments described above.

The wall structure forming step is a step of alternately arranging the plurality of steel tube composite bodies 10 and the panel 20 so as to correspond to the wall slab 52 of the underground structure 50 and pressing them into the ground to form the wall structure 55, Reference will be made to the embodiments described above. However, the steel tube composite body 10 positioned at the lowermost part of the wall structure 55 among the steel tube composite bodies 10 to be press-fitted in this step has no frame 14 on both sides of the lower part, Use a separate structure.

The step of installing the rails is a step of installing the rails 18 inside the lower part of the separated steel pipe 12 of the steel pipe composite 10 at the lowermost part of the wall structure 55. The rail 18 is formed by joining the vertical member 17 to the inside of the separated lower steel pipe by welding or the like and connecting the horizontal member 171 to the vertical member 17 and the lower steel pipe by welding or the like, (18) to the horizontal member (171) by welding or the like. Further, an upper plate 19 may be further provided on the upper side of the rail 18 for sliding, or a horizontal rail may be further provided to prevent lateral flow. In addition, concrete may be additionally installed so that the horizontal member 171 and the vertical member 17 are firmly fixed. The horizontal member 171, the vertical member 17, the rail 18, concrete, and the like may be installed before the steel pipe composite 10 is press-fitted. In addition, a horizontal bracing may be further provided on the inner side of the separated upper steel pipe for supporting.

The underground structure manufacturing step is a step of manufacturing an underground structure 50 composed of the upper slab 51 and the wall slab 52, and reference is made to the above embodiment.

The step of arranging the underground structures is a step of arranging the upper slab 51 and the wall slab 52 of the underground structure 50 so as to correspond to the upper structure 54 and the wall structure 55 respectively, .

The steel pipe composite 10 of the separated structure is separated from the underground structure manufacturing step and the underground structure placing step or before and after the underground structure manufacturing step and the underground structure placing step so that the underground structure 50 can be easily press- That is, loosen the nut that joins the L-shaped section 16 and the upper part of the separated steel pipe 12, and insert the bolt into the ground.

The step of installing an underground structure is a step of pressing the underground structure 50 to push out the upper structure 54 and the wall structure 55 and installing the underground structure 50 in place, .

The lower slab forming step is a step of forming the lower slab 53 connecting the wall slab 52 of the underground structure 50 after excavating the ground inside the installed underground structure 50. This is done by placing the formwork on the floor, placing the reinforcing bars and pouring the concrete.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the constituent elements may be constituted or operated selectively in combination with one or more. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, 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 construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Steel pipe composite
12: Steel pipe
14: frame
141: first frame
142: Second frame
143: first sliding portion
145: Support member
16: L section steel
161: Small L-shaped steel
17: vertical member
171: Horizontal member
18: Rail
19: Top plate
20: Panel
24: the second sliding portion
30: Sliding plate
50: Underground structures
51: upper slab
52: wall slab
53: Lower slab
54: superstructure
55: wall structure
56:

Claims (12)

In the construction method of a non-installed underground structure using a steel pipe composite and a panel,
Forming an upper structure by alternately arranging a plurality of the steel tube composite and the plurality of panels so as to correspond to the upper slab of the underground structure and pressing the same into the ground to form an upper structure;
Forming a wall structure by alternately arranging a plurality of the steel tube composite and the plurality of panels in a manner corresponding to the wall slab of the underground structure and press-fitting the plurality of panels into the ground;
Forming a lower structure by alternately arranging a plurality of the steel pipe composite bodies and the plurality of panels so as to correspond to a lower slab of the underground structure and press-fitting the plurality of the steel pipe complexes into the ground to form a lower structure;
An underground structure manufacturing step of fabricating an underground structure composed of the upper slab, the wall slab, and the lower slab;
Placing an underground structure in which the upper slab, the wall slab, and the lower slab of the underground structure correspond to the upper structure, the wall structure, and the lower structure, respectively; And
And installing an underground structure for pushing the upper structure, the wall structure and the lower structure, and installing the underground structure in place,
In the steel tube composite,
And four frames arranged and connected along the outer circumferential direction of the steel pipe,
Wherein each of the four frames comprises:
A first frame which is coupled to an outer periphery of the steel pipe and has a square shape as a whole, and a second frame of L-shaped shape which is coupled to the inside of the first frame so as to face each other,
Wherein the second frame is provided so that its edge is in contact with the outer surface of the steel pipe,
Further comprising an arc-shaped support member coupled to an edge of the second frame,
Wherein the support member is installed in contact with the side surface of the steel pipe as a whole.
In the construction method of a non-installed underground structure using a steel pipe composite and a panel,
Forming an upper structure by alternately arranging a plurality of the steel tube composite and the plurality of panels so as to correspond to the upper slab of the underground structure and pressing the same into the ground to form an upper structure;
Forming a wall structure by alternately arranging a plurality of the steel tube composite and the plurality of panels in a manner corresponding to the wall slab of the underground structure and press-fitting the plurality of panels into the ground;
A rail mounting step of installing a rail inside the steel pipe of the steel pipe composite at the lowermost part of the wall structure;
An underground structure manufacturing step of fabricating an underground structure composed of the upper slab and the wall slab;
Placing an underground structure in which the upper slab and the wall slab of the underground structure correspond to the upper structure and the wall structure, respectively;
Installing an underground structure for pressing the underground structure to push out the upper structure and the wall structure, and installing the underground structure in place; And
And a lower slab forming step of forming a lower slab of the underground structure after excavating the ground on the inner side of the underground structure,
In the steel tube composite,
And four frames arranged and connected along the outer circumferential direction of the steel pipe,
Wherein each of the four frames comprises:
A first frame which is coupled to an outer periphery of the steel pipe and has a square shape as a whole, and a second frame of L-shaped shape which is coupled to the inside of the first frame so as to face each other,
Wherein a corner of the second frame is provided in contact with an outer surface of the steel pipe,
The steel pipe composite of the lowest part of the wall structure of the steel pipe composite body is composed of a separation structure in which there is no frame on both sides of the lower part and the lower part of the steel pipe can be separated,
Further comprising an arc-shaped support member coupled to an edge of the second frame,
Wherein the support member is installed in contact with the side surface of the steel pipe as a whole.
The method of claim 2,
The separation structure is characterized in that the steel pipe is divided into an upper part and a lower part, L-shaped steel is coupled to both ends of the separated lower steel pipe, a small L-shaped steel is coupled to a horizontal flange of each of the L- Wherein both ends of the separated upper steel pipe are inserted between the flange and the vertical flange of the small L-shaped steel, and then are fastened with bolts and nuts.
The method of claim 3,
Wherein the separation structure further comprises a vertical member coupled to an inner surface of the separated lower steel pipe, a horizontal member coupled with the vertical member, and a rail coupled to the upper side of the horizontal member.
The method according to claim 1 or 2,
Wherein the first frame of the steel tube composite further comprises a first sliding part which is coupled to the side surface in the longitudinal direction and is slidably fitted into the panel.
The method of claim 5,
Wherein the first sliding portion is in a shape of a letter, a letter, or a letter.
delete The method according to claim 1 or 2,
Wherein the steel tube composite further comprises a sliding plate provided on the outer side surface and / or the inner side surface,
The sliding plate is coupled to the steel pipe with bolts and nuts,
Wherein the head of the bolt is arranged on the outside of the steel pipe in a round shape,
Wherein the nut is disposed on the inner side of the steel pipe, and the nut is loosened from the inner side of the steel pipe, and then the bolt is struck to be buried in the ground.
The method of claim 5,
Wherein the panel includes a second sliding portion provided at an end thereof.
The method of claim 9,
Wherein the second sliding portion is a combination of a crescent shape, a one-letter shape, or a one-letter shape and a length of one side, which are tightly coupled with the first sliding portion and are slid at the same time, Construction method.
The method of claim 9,
Wherein a part of the plurality of panels is provided with a stretch joint to adjust the width thereof.
The method of claim 11,
Wherein the expansion joint part is divided into two, and then the two parts are overlapped with each other,
Wherein the overlapping flanges are coupled by bolts and nuts so that the width can be adjusted.

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