KR101721579B1

KR101721579B1 - Excavation Propulsion Apparatus of Underground Concrete Structure on Segement Construction Base

Info

Publication number: KR101721579B1
Application number: KR1020150085322A
Authority: KR
Inventors: 유인자; 김남선
Original assignee: 유인자
Priority date: 2015-06-16
Filing date: 2015-06-16
Publication date: 2017-03-30
Also published as: KR20160148359A

Abstract

The present invention relates to an excavation propulsion device for constructing a concrete concrete underground structure and a method of constructing the excavation propulsion device, and more particularly to an excavation propulsion device for constructing a segment concrete concrete underground structure, The excavation propulsion device for constructing the underground structure of the segmented concrete to secure the space in the direction of press-in of the concrete underground structure by installing the excavating means forward by the elastic force of the spring, And a construction method using the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavation propulsion device for constructing an underground structure of a segment type concrete,

The present invention relates to an excavating propulsion device for constructing a concrete concrete underground structure and a construction method using the excavation propulsion device. More particularly, the present invention relates to an excavation propulsion device for constructing a concrete concrete underground structure, It is easy to secure the space in the direction of press-in of concrete underground structure by installing excavation means that moves forward. Also, at the same time as the excavation, the tip propulsion is pressed directly by the spring, The present invention relates to an excavation propulsion device for constructing a concrete concrete underground structure capable of stably constructing a concrete underground structure by curing a concrete underground structure at a base and successively pressing it into the ground, and a construction method using the same.

Concrete underground structures are installed by concrete casting method for the purpose of installation of dimensions and communication cables in the basement. In the form of these concrete underground structures, they are bent and formed from the ceiling of the structure so as to form a diaphragm in cooperation with the structure ceiling and the structure ceiling. A structure left side wall portion and a structure right side wall portion.

As used herein, the concrete pouring method refers to a method of forming a concrete structure by molding work, reinforcement work, concrete pouring work, curing work, and mold disassembly work, as is well known in the art.

Non-opening method is widely used when concrete underground structures are to be installed across ground facilities that are difficult to transfer or open due to structural or usage reasons such as roads and railways.

In the non-installation method, a propulsion base and a reaching base are excavated on both sides of a ground facility to be traversed, and a concrete underground structure is constructed by using a propulsion base and a reaching base as a work space without touching ground facilities Lt; / RTI >

The construction methods of concrete underground structures by such non-installation methods include a front jacking method and a steel pipe loop method.

The towing method is a method of constructing a concrete underground structure in the adjoining area of the structure installation site and then repeating traction and excavation work to install the structure underground.

The towing method has a problem that when the size of the concrete underground structure becomes large, the traction is restricted and a large workshop is required.

In the steel pipe-loop method, a steel pipe is successively press-fitted in advance into the ground where a structure is to be formed to form a steel pipe loop, and all of the internal gravel inside the steel pipe loop is removed to construct a structure. 42 will be described in detail as follows.

15 to 17 are views showing a conventional steel pipe loop construction method.

The operation of pressing the unassembled steel pipe 161a and the steel pipe assembly 161b from the propulsion base (not shown) to the arrival base (not shown) is repeated to form the horizontal section of the steel pipe loop 161 15 and Fig. 16). Here, the press-fitting operation is performed by repeating the propulsion operation of the steel pipe 161a and the steel pipe assembly 161b and the front area excavation operation.

Next, the vertical section of the steel pipe loop 161 is formed in the same manner as the method of forming the horizontal section of the steel pipe loop 161 (see Fig. 17)

After the formation of the steel pipe loop 161 is completed, reinforcing bars are assembled into the steel pipe 161a and the steel pipe assembly 161b, and then concrete or mortar is injected and solidified (see FIG. 15).

Next, a space surrounded by the steel pipe loop 161 is excavated.

Next, a concrete pouring method is applied to the excavation space to form a concrete underground structure 208 (see FIG. 17). Reference numeral 161a in FIG. 15 denotes a structure ceiling, reference numeral 161b denotes a structure left side wall portion, and reference numeral 161c denotes a structure right side wall portion.

The steel pipe loop construction method having the above-described construction is disclosed in 2009 Patent Application No. 1741 (entitled " Steel pipe assembly ").

However, according to the method of constructing the concrete underground structure of the conventional steel pipe loop method, since the steel pipe loop 161 must be formed to form the concrete underground structure 208, there is a problem that the procedure for constructing the concrete underground structure is complicated.

Also, the work of excavating the space surrounded by the steel pipe loop 161 and the concrete pouring work are completely separated, complicating the construction of the concrete underground structure.

In order to solve the above-mentioned problems, Korean Patent Application No. 10-2014-0006978 (2014. 01. 21) filed by the present applicant, entitled " Excavation Propulsion Device for Constructing Segment Type Concrete Underground Structures " Construction methods have been introduced.

However, since the applicant has to apply the concrete pouring and waterproofing work in order to construct the concrete underground structure, the work is complicated, and safety problems and work efficiency are lowered.

In order to solve the above-mentioned problems, the present invention has been made in view of the above-mentioned Korean Patent Application No. 10-2014-0006978, which was filed by the applicant of the present invention, and an improved method for constructing a segmented concrete underground structure As a result,

The excavating means is advanced forward by the elastic force of the spring to easily secure the space in the press-in direction of the concrete underground structure, the safety and quality of the cover film are secured, It is easy to work, it is stable, and it can increase the efficiency of operation, and the connection between concrete underground structures is treated with waterproof sheet, nonwoven fabric, The present invention also provides an excavation propulsion device for constructing a concrete type underground structure, and a construction method using the excavation propulsion device, which enables a smooth indentation by reducing the coefficient of friction when the concrete underground structure is press-fitted.

The excavation propulsion device for constructing a concrete concrete underground structure according to the present invention comprises a hydraulic jack (10) supported by a reaction force wall (501) installed on a propulsion base (500) and pressing a concrete underground structure (C); And a plurality of external force supporting pipes 210 (210) are provided on the upper and both side surfaces of the support structure 100, and a plurality of external force supporting pipes 210 A load supporting portion 200 having a lower end connected to each of the left and right rails 220 and 222 and an excavating means 300 installed at a forward end of the external force supporting pipe 210, And a work structure (20) for supporting an external force at a tip of the concrete underground structure (C) and guiding a forward direction of the concrete underground structure (C), the excavation propulsion device for constructing a segmented concrete underground structure,

The excavating means 300 includes an excavating blade 310 installed at an upper portion of a front end of each of the external force supporting pipes 210 located at the upper portion of the excavator blade 300 and an upper surface of the excavator blade 310 fixed to the lower surface of the excavator blade 310, The excavating blade advancing rod 330 is installed inside of the excavating blade advancing rod 210 and has a spring 320 therein to advance the excavating blade 310 by an elastic force. And a fixing rod 340 fixed to a reaction block 350 installed on the inner side of the external force supporting tube 210 and pressing the spring 320. [

Also, a method of constructing a segmented concrete underground structure includes a rail installation step S1 in which a pair of rails are installed in a press-fit manner between the bottom surface of the propulsion base and the starting point and the building end point;

(S2) a work structure for manufacturing a work structure having a support structure, a load supporting portion, and an excavating means;

Construction phase (S3) of the concrete structure curing mold to construct the concrete structure curing mold to build and cure concrete underground structure at the propulsion base;

A step S4 of installing a hydraulic jack for installing a hydraulic jack on the reaction force wall of the propulsion base;

(S5) a step of installing a concrete structure curing mold in which the concrete structure curing mold is installed in the forward direction of the reaction force wall and extending in the forward direction from the inside of the hydraulic jack;

A step (S6) of installing a working structure for mounting both lower ends on a pair of rails provided on the bottom surface of the propelling device in front of the curing mold of the concrete structure;

In order to form a concrete underground structure, concrete underground structure forming step (S7), in which concrete is cemented by reinforcing concrete work using a concrete structure curing frame at a propulsion base;

(S8) a work structure pressing step S8 for pressing the work structure such that the concrete underground structure moves forward by pushing the work structure forward by operating the hydraulic jack so that the front end of the excavating means of the work structure is brought into close contact with the construction start point;

A working structure entrance space excavation step (S9) for excavating the excavation means in front of the excavation means of the work structure by the operator and forming an entrance space through which the excavation means advances forward by the elastic force to enter the support structure and the load support portion;

(S10) a concrete underground structure waterproofing work in which a waterproofing member made of a waterproof sheet, a nonwoven fabric, and an iron plate is sequentially fixed to an outer surface of a concrete underground structure by a method such as adhesion by heating;

(S11) of pressing concrete underground structure by pushing the concrete underground structure by pushing the hydraulic jack to press the concrete underground structure into the ground;

When the work structure reaches the building end point by repeating the concrete underground structure forming step S7, the working structure entrance space excavation step S9, the concrete underground structure waterproofing work step S10 and the concrete underground structure indenting step S11, (Step S12).

The present invention is advantageous in that the excavating means provided at the front end of the supporting structure is provided with an elastic force by the inner spring and is advanced by the elastic force itself without a separate advancing device so as to excavate the forward stratum.

In addition, each concrete underground structure is subjected to curing work at the upper open-ended propulsion base and continuously pressurized into the ground, so that reliable quality control and stable concrete underground structure can be formed and constructed compared to the concrete underground structure construction work performed in the conventional paper And it is effective to reduce the construction cost by simplifying the procedure and facilities for constructing concrete underground structures.

After the concrete underground structure is completed, the work structure can be recovered and reused.

1 is a side view showing a drilling rig for constructing a concrete concrete underground structure according to an embodiment of the present invention;
FIG. 2 is a perspective view illustrating a working structure of a drilling apparatus for constructing a concrete concrete underground structure according to an embodiment of the present invention; FIG.
3 is a perspective view of the internal structure of a working structure of a drilling rig for constructing an underground structure of a segmented concrete according to an embodiment of the present invention.
4 is a perspective view illustrating excavating means of a drilling propulsion device for constructing an underground structure of a segment concrete concrete according to an embodiment of the present invention;
5 is a side cross-sectional view illustrating excavating means of an excavation propulsion system for constructing a segmented concrete underground structure according to an embodiment of the present invention.
<5a - the state before excavation means operation, 5b - the state after excavation means operation>
FIG. 6 is a side cross-sectional view showing an external force supporting steel plate portion of a drilling propulsion device for constructing an underground structure of a segmented concrete according to an embodiment of the present invention. FIG.
7 is a front sectional view of the excavating means of the excavation propulsion device for constructing the underground structure of the segment concrete concrete according to the embodiment of the present invention.
FIG. 7a is a cross-sectional view of an excavating means of a drilling propulsion device for constructing a segmented concrete underground structure according to another embodiment of the present invention
8 is a front sectional view of a working structure of a drilling propulsion device for constructing an underground structure of a segmented concrete according to an embodiment of the present invention.
9 is a perspective view of a working structure of a drilling propulsion device for constructing a segmented arched concrete underground structure according to another embodiment of the present invention.
10 is a flowchart of a method of constructing a segmented concrete underground structure according to an embodiment of the present invention.
11A and 11B are views showing a curing mold of a concrete structure of a drilling propulsion apparatus for constructing an underground structure of a segmented concrete according to an embodiment of the present invention.
12 is a view showing a waterproof member of a method for constructing a concrete concrete underground structure according to an embodiment of the present invention.
13 and 14 are diagrams illustrating a method of constructing a segmented concrete underground structure according to an embodiment of the present invention.
15 to 17 are diagrams showing a conventional steel pipe loop construction method, respectively.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view showing a drilling apparatus for constructing an underground structure of a segment concrete according to an embodiment of the present invention, and FIG. 2 is a view showing a work structure of a drilling apparatus for constructing a underground structure of a segment concrete concrete structure according to an embodiment of the present invention FIG. 3 is a perspective view of the internal structure of a working structure of a drilling apparatus for constructing an underground structure of a segmented concrete according to an embodiment of the present invention, and FIG. 4 is a perspective view of a drilling apparatus for constructing an underground structure of a segmented concrete according to an embodiment of the present invention. FIG. 5 is a side sectional view showing the excavating means of the excavation propulsion device for constructing the underground structure of the segment concrete concrete, FIG. 5 is a side sectional view showing the excavation device of the excavation propulsion device for constructing the underground structure of the segment concrete, FIG. 6 is a view showing the state after the excavating means is operated, and FIG. 6 is a view showing a state after reinforcing the external support tube of the excavating propulsion device for constructing the underground structure of the segment concrete concrete according to the embodiment of the present invention And a cross-sectional side view that illustrates, Figure 7 is a front sectional view of a drilling tool of the drilling device for building a segment driving type concrete underground structure according to an embodiment of the invention.

1 to 7, the excavation propulsion device for constructing the underground structure of a segmented concrete concrete structure according to the present invention is supported by a reaction force wall 501 installed on a propulsion base 500 to pressurize a concrete underground structure C, (10); And a plurality of external force supporting pipes 210 (210) are provided on the upper and both side surfaces of the support structure 100, and a plurality of external force supporting pipes 210 A load supporting portion 200 having a lower end connected to each of the left and right rails 220 and 222 and an excavating means 300 installed at a forward end of the external force supporting pipe 210, And a work structure (20) for supporting an external force at a tip of the concrete underground structure (C) and guiding a forward direction of the concrete underground structure (C), the excavation propulsion device for constructing a segmented concrete underground structure,

The excavating means 300 includes an excavating blade 310 installed at an upper portion of each of the external force supporting pipes 210 located at the upper portion of the excavator blade 300 and a lower surface of the excavator blade 310 fixed to the lower surface of the excavator blade 310, The excavating blade advancing rod 330 is installed inside of the excavating blade advancing rod 210 and has a spring 320 therein to advance the excavating blade 310 by an elastic force. And a fixing rod 340 fixed to the reaction force block 350 installed at the inner side of the external force supporting tube 210 to press the spring 320.

More specifically, the hydraulic jack 10 is installed to be supported by a reaction force wall 501 installed on the propulsion base 500, and the piston rod is advanced and retreated by hydraulic pressure to pressurize the concrete underground structure C, So as to be press-fitted.

2, the working structure 20 supports an external force at the tip of the concrete underground structure C and guides the support structure 100, (200), and excavation means (300).

The supporting structure 100 includes a supporting left wall portion 111 formed by bending both ends of the supporting ceiling plate portion 110 so as to form a diaphragm shape in cooperation with the supporting ceiling plate portion 110 and the supporting ceiling plate portion 110, (112), and the support structure (100) can be manufactured using a steel sheet having a thickness of about 30 millimeters.

The supporting left side wall portion 111 and the supporting right side wall portion 112 are inclined from the front end to the rear end to ensure the safety of the covering film and facilitate the advancing of the supporting structure 100.

In this case, the definitions of the left side and the right side are based on when looking at the arrival base 510 from the propulsion base 500, the front end means the near end to the arrival base 510, (500).

3, the load supporting portion 200 is coupled to the inside of the supporting ceiling plate 110 of the supporting structure 100 and the supporting left and right side walls 111 and 112, The load supporting part 200 is divided into a plurality of transversely spaced apart equally spaced apart mold beams 214 and a pair of left and right rails 220, An inner pillar 215 coupled to both end portions in a vertical direction so as to support a load and an outer pillar 215 installed to surround the outside of the pillar 214 and the inner pillar 215 arranged at equal intervals, The tube 210 is welded to the inner surface of the support structure 100.

The external force supporting pipe 210 has a concrete reinforcing portion 210a formed therein to prevent the external force supporting pipe 210 from being bent by an external force.

The concrete reinforcing portion 210a is formed at a certain time from the predetermined section to the rear end of the external force supporting pipe 210 without passing through the entire section and passes through the contact surface of the adjacent external force supporting pipe 210, The concrete injection and curing work can be carried out step by step in a state where the reinforcing material 210b is installed in advance (refer to FIG. 3).

The connection plate 218 is welded in an inverted triangular shape between the external force supporting pipe 210 and the external force supporting pipe 210 so that the coupling between the external force supporting pipes 210 is secure. Thereby facilitating sagging and backward movement (see FIG. 7).

An external supporting beam 230 is fixed to the inner side reaction block 350 of the external force supporting tube 210 at an upper part of the lower side of the front side of the plurality of external force supporting pipes 210, The external force supporting pipe 210 can easily withstand the load applied to the front upper portion of the external force supporting pipe 210 in order to stabilize the closing film while moving forward.

A plurality of resin reinforcement bars 231 are fixed to the reaction block 350 and extend through the lower end of the external force supporting pipe 210 to support the external supporting frame 230, And a horizontal reinforcing frame 232 horizontally extending at a predetermined height and thickness at the lower end of the external force supporting pipe 210 to support the external force supporting pipe 210.

The horizontal reinforcement frame 232 is a structure in which the front surface is clogged with a soil board or the like to prevent the excavated soil from being pushed forward into the horizontal reinforcement frame 232.

As shown in FIGS. 2 to 7, the excavating means 300 is installed at an upper portion of each external force supporting pipe 210 located at the upper portion of the inside of the support structure 100 so as to have a plurality of divided structures The excavating blade 310 and the excavating blade advancing rod 330 for advancing the excavating blade 310 by an elastic force provided inside the spring 320 are installed inside the front end of the external force supporting pipe 210 And a fixing rod 340 inserted into the rear end of the excavating blade advancing rod 330 to press the spring 320.

The excavating blade 310 is formed with a wedge-shaped blade portion 313 having a flat top surface and a bottom surface inclined in order to advance forward while excavating the ground layer. The excavating blade 310 is elongated to the rear end of the blade portion 313, And a support blade 315 for supporting the blade 313 at the upper and both sides to facilitate the advancement of the blade.

At this time, the support blade 315 may be positioned lower than the blade 313 at the upper boundary of the blade 313 and the support blade 315 so that the step blade 316 may be formed.

The excavating blade advancing rod 330 is installed at an inner upper end of the external force supporting pipe 210 and is connected to the excavating blade 310 to advance the excavating blade 310 forward, Is fixed to the lower surface of the excavating blade 310 at the upper end of the excavating blade advancing bar 330 by welding or the like.

A spring 320 is installed inside the excavation-edge advancing bar 330.

The rear end of the fixing rod 340 is inserted into the rear end of the excavation blade advancing rod 330 and fixed to the spring 320. The rear end of the reaction block 340 is installed inside the external force supporting pipe 210 So that the excavating-edge advancing rod 330 is advanced forward by the resilient force of the spring 320 that has been pressed by the spring 320, .

That is, when the concrete underground structure C is moved forward by the operation of the hydraulic jack 10, the work structure 20 in contact with the excavation surface of the excavation section is located in front of the concrete underground structure C The excavating means advancing rod 330 is in a state in which the excavating blade advancing rod 330 is in tight contact with the front end of the supporting structure 100 while pressing the spring 320, The excavating blade advancing rod 330 advances forward due to the elastic force of the spring 320 when the excavating surface layer of the excavation section is excavated by the operator and the excavating blade advancing rod 330 is advanced from the upper end of the external force supporting pipe 210 The excavating blade 310 combined with the excavating blade 310 advances together so that the excavating blade 310 linearly moves while supporting the external force of the excavation section continuously, thereby facilitating the space in which the supporting structure 100 can advance.

The reaction force block 350 is installed by concrete injection and curing.

A hydraulic jack may be installed in the excavating means 300 in place of the spring 320 so that the excavating blade 310 can be moved forward by hydraulic pressure.

The excavating means 300 may be installed not only in the external force supporting pipe 210 installed on the inner upper side of the supporting structure 100 but also in the external force supporting pipe 210 installed on both inner sides of the supporting structure 100, The excavating means 300 is installed on the outer side of each of the external force supporting pipes 210 installed on both sides of the inside of the supporting structure 100 to facilitate excavation of the side surface while supporting the external force of the side surface.

A reinforcing steel plate 316 is installed at an inner corner of the support blade 315 to prevent the support blade 315 from being bent by an external force,

A reinforcing steel plate 216 is provided on the inside of the external force supporting pipe 210 and outside the excavating blade advancing rod 330 so that the upper portion of the external force supporting pipe 210 is pressed by an external force applied to the excavating means 300 (See Fig. 7).
The excavating blade 310 may be formed in a semicircular shape corresponding to the shape of the cylindrical external force supporting pipe 210. The semicircular excavating blade 310 may be formed with a circular cross- And one or more excavating blade advancing rods 330 are installed to be connected to the excavating blade 310 through a fixed key 335 so that the excavating blade 310 can be advanced forward. 7a)

FIG. 8 is a cross-sectional view of a work structure of a drilling propulsion system for constructing an underground structure of a segmented concrete according to an embodiment of the present invention. FIG. 9 is a cross- Fig.

The working structure according to the present invention can be manufactured according to a rectangular concrete underground structure as shown in FIG. 8, but it can be manufactured in a form suitable for constructing an arched concrete underground structure as shown in FIG.

This is because the outer side of the load supporting part 200 of the supporting structure is disposed in the external force supporting tube 210 to support the external force, so that the shape can be freely manufactured as compared with the conventional method using the beam member, The safety can be secured by the supporting force.

Hereinafter, a method for constructing a concrete underground structure using the excavation propulsion device according to the present invention will be described.

For convenience of explanation, a propulsion base 500 having a propulsion base bottom surface is formed behind the construction start point 503, and a reaching base 510 having a reaching base bottom surface is formed in front of the build end point 513 . Here, the construction start point 503 indicates a planned position where the concrete underground structure starts, and the construction end point 513 indicates a planned position where the concrete underground structure ends (see FIG. 13).

First, a pair of rails 220 and 222 are installed in the interval between the bottom surface of the propulsion base 500 and the construction start point 503 and the construction end point 513 by press fitting.

As described above, when the reaction force wall is installed in the propulsion base 500 and the rails 220 and 222 are moved from the propulsion base 500 to the arrival base 510 by using a hydraulic jack or the like, And therefore detailed description is omitted (refer to FIG. 13).

The working structure 20 of the present invention includes a support structure 100 having a metal plate structure bent in a diagonal shape and a load supporting portion 100 having a plurality of external force supporting tubes 210 coupled to the inside of the support structure 100 A spring 320 and an excavating blade advancing rod 330 and a fixing rod 340 are provided on the front end of the load supporting part 200 in the forward direction of the external force supporting pipe 210 of the load supporting part 200, Means 300 are provided to fabricate the work structure 20.

The concrete structure curing mold 60 is for casting the concrete in the propulsion base 500 to produce a concrete underground structure. The concrete structure curing mold 60 is made of a concrete mold 61 or a steel mold 62 do.

The outer surface of the concrete frame 61 is coated to facilitate the separation of the concrete underground structure to be cured.

The steel formwork 62 includes a rectangular ceiling formwork surface 62a formed by using a Euroform and a form leg 62b which is joined to the bottom edge areas of the ceiling formwork surface 62a, A pair of screw jacks 62c coupled to the lower end of the screw jack 62c and a die support 62d coupled to the lower ends of the screw jack 62c one by one and a die brace 62e and a die reinforcement 62f ).

The steel mold 62 adjusts the height of the screw jack 62c so that it can be separated from the concrete underground structure C after curing of the concrete structure C (see FIGS. 11A and 11B).

A reaction force wall 501 is provided at a rear end of a pair of rails 220 and 222 installed on the propulsion base 500 and a hydraulic jack 10 having a piston rod is installed to be supported by the reaction force wall 501.

A concrete structure curing frame 60 made of a concrete frame 61 or a steel formwork 62 is installed in front of the reaction force wall 501 of the propulsion base 500 and extending in the forward direction from the inside of the hydraulic jack 10.

The lower end of the load supporting portion 200 of the working structure 20 is coupled to the pair of rails 220 and 222 so that the lower end of the load supporting portion 200 of the working structure 20 is coupled to the pair of rails 220 and 222, The structure 20 is installed.

In order to form a concrete underground structure, a reinforced concrete casting frame 60 installed on a propulsion base 500 is used to perform a concrete pouring operation and curing to form a concrete underground structure C. At this time, the curing process applies the steam curing method in order to reduce the curing time.

After the concrete underground structure (C) is formed, the concrete underground structure curing frame (60) is continuously used for forming the subsequent concrete underground structure (C) without disassembling.

&Lt; Operation structure pressing step >

First, a steel pipe multi-stage 70 is installed in a peripheral region of a pair of rails 220 and 222 in a press-fitting manner.

The hydraulic jack 10 installed on the reaction force wall 501 of the propulsion base 500 is operated to press the concrete underground structure C in front of the piston rod and pressurize the concrete underground structure C The work structure 20 installed in front of the work structure body 20 advances forward so as to press the work structure 20 so that the front end of the excavating means 300 of the work structure body 20 comes into close contact with the construction start point.

The operator excavates the stratum in front of the excavating means 300 of the working structure 20 so that each excavating blade 310 of the excavating means 300 advances forward by a predetermined distance by the elastic force of the spring 320 .

At this time, each external force supporting pipe 210 installed with the excavating means 300 can perform excavation work while the worker goes in and out with an inner diameter of about 1.5 m to 2 m, and the lower end section of the upper external force supporting pipe 210 is partially opened So that the excavated work can be performed while discharging the excavated gravel to the lower portion of the external force supporting pipe 210.

In addition, it is also possible to perform the excavation work of the stratum by using the work car equipped with the excavator after the jaw is formed by using the gravel.

The method of excavating the ground layer using the above-described operator or work vehicle does not belong to the main configuration of the present invention, so a detailed description will be omitted.

The excavation operation is continuously performed until the excavating blade 310 advances to less than 50 cm to 1 m to secure a space in which the support structure 100 and the load supporting unit 200 can enter.

The waterproofing member 30 is provided on the outer surface of the concrete underground structure C by means of adhesion or the like by heating. The waterproofing member 30 is provided on the waterproof sheet 30-1, the nonwoven fabric 30-2, The waterproof sheet 30-1 is installed to effectively protect the connection portion between the concrete underground structures C, and the nonwoven fabric 30-2 is formed of a concrete underground structure (C) is provided to prevent tearing of the waterproof sheet (30-1) during press-fitting, and the steel plate (30-3) is installed to lower the coefficient of friction when the concrete underground structure (C)

When the concrete underground structure C is pressed by the hydraulic jack 10 and the concrete underground structure C presses the work structure 20 in front of the work structure 20, the work structure 20 advances forward, The concrete underground structure C is moved to press the concrete underground structure C into the ground.

&Lt; Repeat process step &

Repeating the concrete underground structure forming step, excavating the work structure entrance space, waterproofing work of concrete underground structure, and press-fitting the concrete underground structure, the work structure 20 is repeatedly worked until it reaches the building end point 513, To complete the construction of concrete underground structures (see FIG. 14).

On the other hand, in the installation of the waterproofing member 30 by the repetitive process, first, the waterproof sheet 30-1 is attached so that the connection portion between the waterproof sheets 30-1 installed before and after the waterproof sheet 30-1 is contacted by about 50 cm, And so on.

The nonwoven fabric 30-2 and the steel plate 30-3 are installed on the outside of the waterproof sheet 30-1 and the rear end of the nonwoven fabric 30-2 and the steel plate 30-3 are connected to a concrete underground structure C and the steel plate 30-3 are continuously installed at a distance of about 50 cm from the rear end of the concrete underground structure C to the rear of the concrete underground structure C, C) to the rear side (a section spaced forward by about 50 cm from the rear end), the adjacent nonwoven fabric 30-2 is connected to the steel plate 30-3 by welding or the like.

That is, the waterproof sheet 30-1 is firmly connected to the adjacent waterproof sheets 30-1 by a method such as adhesion by heating after being installed in contact with each other, and the nonwoven fabric 30-2 and the iron plates 30-3 Can be installed to extend to the rear side of the concrete underground structure C located at the rear end of the concrete underground structure C positioned at the front end to effectively protect the connection portion between the concrete underground structures C. Further, (See Fig. 12).

As described above, according to the embodiment of the present invention, the concrete underground structure is constructed by press-fitting in the ground, and the excavating means 300 installed at the end of the support structure 100 is provided with elastic force by the inner spring 320 The concrete underground structure (C) is cured at the propulsion base (500) with the upper part opened, and is continuously press-fitted into the ground It is possible to form and construct the concrete underground structure more stably than the concrete underground structure construction work carried out in the conventional paper. Therefore, the procedure and equipment for constructing the concrete underground structure can be simplified and the work can be stably performed. After the construction of the concrete underground structure is completed, the work structure is recovered, Easily it becomes possible.

The excavating means 300 can also be divided into a plurality of excavating blades 310 and individually advance the respective excavating blades 310 to facilitate the excavation of the front of the working structure 20, Can be prevented from being damaged.

Although the present invention having been described above has been described with reference to a limited number of embodiments, it is to be understood that the present invention is not limited thereto and that various changes and modifications may be made without departing from the spirit and scope of the present invention by those skilled in the art. Various modifications and variations will be possible within the scope of the appended claims.

10- Hydraulic Jack
20-task structure
30-waterproof member
60- Concrete structure curing frame
61-Concrete
62-steel formwork
100-support structure
110-support ceiling plate
111-supporting left side wall portion
112-support right wall portion
200-
210-external force supporting pipe
214-Mold Beam
214-Inner column
218-connection plate
220,222-rail
230-external supporting steel plate
300-Excavation means
310-Excavation day
313-blade
315-Supporting blade
320-spring
330-Excavation blade advance rod
335-fixed key
340-fixed rod

Claims

A hydraulic jack 10 supported by a reaction force wall 501 installed on the propulsion base 500 to press the concrete underground structure C; And a plurality of external force supporting pipes 210 (210) are provided on the upper and both side surfaces of the support structure 100, and a plurality of external force supporting pipes 210 A load supporting portion 200 having a lower end connected to each of the left and right rails 220 and 222 and an excavating means 300 installed at a forward end of the external force supporting pipe 210, And a work structure (20) for supporting an external force at a tip of the concrete underground structure (C) and guiding a forward direction of the concrete underground structure (C), the excavation propulsion device for constructing a segmented concrete underground structure,
The excavating means 300 includes an excavating blade 310 installed at an upper portion of a front end of each of the external force supporting pipes 210 located at the upper portion of the excavator blade 300 and an upper surface of the excavator blade 310 fixed to the lower surface of the excavator blade 310, The excavating blade advancing rod 330 is installed inside of the excavating blade advancing rod 210 and has a spring 320 therein to advance the excavating blade 310 by an elastic force. And a rear end thereof is fixed to a reaction block 350 provided inside the external force supporting tube 210 and presses the spring 320,
The excavating blade 310 includes a wedge-shaped blade portion 313 for excavating a ground layer and a supporting blade 315 extending toward a rear end of the blade portion 313 and bent in a diaphragm shape to support an external force ,
The excavating means 300 is installed on the outer surface of the external force supporting pipe 210 in the external force supporting pipe 210 installed on both sides of the supporting structure 100,
The upper end of the external supporting pipe 210 is partially cut away in the forward direction and fixed to the lower surface of the excavating blade 310 to form a locking key 335 on the upper surface of the excavating blade advancing rod 330 Installed,
The inner edge of the support blade 315 and the outer edge of the support pin 315 and the external force supporting pipe 210 are formed on the inside of the external force supporting pipe 210 and outside the excavating blade pushing rod 330 Reinforcing steel plates 316 and 216 are installed to prevent warp caused by the steel plates 316 and 216,
Wherein each of the external force supporting pipes (210) is firmly fixed by an inverted triangular connecting plate (218).

delete

The method according to claim 1,
An external force supporting portion 230 for supporting the front lower end of the external force supporting tube 210 and for protecting the external force supporting membrane 210 is installed on the lower side of the front side of the plurality of external force supporting tubes 210 of the load supporting portion 200,
The upper portion of the external force supporting beam 230 is fixed to the reaction force block 350 in the external force supporting tube 210 and has a plurality of vertical beams 231 installed through the lower end of the external force supporting tube 210, And a horizontal reinforcing frame (232) supported by the external force supporting pipe (210) and extending horizontally at a lower end of the external force supporting pipe (210) to support the external force supporting pipe (210) Excavation propulsion system.

A rail installation step S1 for installing a pair of rails in a press-fit manner between the bottom surface of the propulsion base and the starting point and the building end point;
(S2) a work structure for manufacturing a work structure including the support structure, the load support, and the excavating means of claim 1;
Construction phase (S3) of the concrete structure curing mold to construct the concrete structure curing mold to build and cure concrete underground structure at the propulsion base;
A step S4 of installing a hydraulic jack for installing a hydraulic jack on the reaction force wall of the propulsion base;
(S5) a step of installing a concrete structure curing mold in which the concrete structure curing mold is installed in the forward direction of the reaction force wall and extending in the forward direction from the inside of the hydraulic jack;
A step (S6) of installing a working structure for mounting both lower ends on a pair of rails provided on the bottom surface of the propelling device in front of the curing mold of the concrete structure;
In order to form a concrete underground structure, concrete underground structure forming step (S7), in which concrete is cemented by reinforcing concrete work using a concrete structure curing frame at a propulsion base;
(S8) a work structure pressing step S8 for pressing the work structure such that the concrete underground structure moves forward by pushing the work structure forward by operating the hydraulic jack so that the front end of the excavating means of the work structure is brought into close contact with the construction start point;
A working structure entrance space excavation step (S9) for excavating the excavation means in front of the excavation means of the work structure by the operator and forming an entrance space through which the excavation means advances forward by the elastic force to enter the support structure and the load support portion;
(S10) a concrete underground structure waterproofing work in which waterproofing members made of a waterproof sheet, a nonwoven fabric, and an iron plate are sequentially fixed to the outer surface of a concrete underground structure by a method of adhesion by heating;
(S11) of pressing concrete underground structure by pushing the concrete underground structure by pushing the hydraulic jack to press the concrete underground structure into the ground;
When the work structure reaches the building end point by repeating the concrete underground structure forming step S7, the working structure entrance space excavation step S9, the concrete underground structure waterproofing work step S10 and the concrete underground structure indenting step S11, (Step S12) of repeating the steps S12 to S12,
The waterproof sheet is attached by heating after the installation so that the connection portions between the waterproof sheets installed before and after the waterproof sheet are in contact with each other by 50 cm and the rear end of the nonwoven fabric and the steel plate are installed so as to be spaced 50 cm forward from the rear end of the concrete underground structure, Wherein the continuously installed nonwoven fabric and the steel plate extend from the rear side of the concrete underground structure to the rear side of the concrete underground structure located at the rear end and are welded to each other to connect the adjacent nonwoven fabric to the steel plate.

delete