KR20070106836A - Excavation method of road and railroad lower part using deck unit jacking - Google Patents

Abstract

A method of excavating a pit below a roadway or a railway is provided to have an underground structure while maintaining flow of traffic on the roadway or the railway at a reduced cost in a reduced construction period. A method of excavating a pit below a roadway or a railway includes a step of excavating ground on both sides of a roadway(80) or a railway to prepare a launch pit(70), a step of installing a pipe(10) to be rammed, a step of installing a deck(20) on a deck frame(74), a step of preparing cutter grooves equally spaced along the desired width of the excavation, a step of installing a leading plate(30) to cover the top of space to be excavated, a step of excavating ground under the leading plate and installing beams and guide angles at the excavated space, a step of jacking the pipe along with the deck and the leading plate using a jack unit(72), and a step of repeating preparation of space and jacking of the pipe.

Description

Excavation method of road and railroad lower part using deck unit jacking}

1 is an exemplary view schematically showing a construction state of the trench for building the underground structure under the road according to an embodiment of the present invention,

Figure 2 is a perspective view showing the shape of the deck unit of the present invention,

3 is a bottom perspective view showing the shape of the lead plate of the present invention;

4 is a cross-sectional view showing a cutter groove of the present invention;

5 is a front view as viewed from the close-up surface during the trench operation of the present invention,

6 is a conceptual view as viewed from the side showing the press-fit state of the steel pipe and deck unit of the present invention,

7 is a cross-sectional view illustrating A-A of FIG. 6;

8 is a side view schematically showing a construction state of the trench for building the underground structure in the lower portion of the railway according to another embodiment of the present invention,

Figure 9 is a plan view schematically showing the installation state of the railway lifting means according to another embodiment of the present invention.

10 is a conceptual diagram showing the installation of a secondary structure using the trench space of the present invention,

<Description of the symbols for the main parts of the drawings>

(10): steel pipe (20): deck unit

21: Deck 22: Pedestal

30: leading plate 31: top plate

(32): key (33): reinforcing member

40: support (41): lower support

(42): upper support (43): support pile

(44): earth plate

60: guide angle 61: horizontal portion

(62): vertical portion 63: nail

(70): propulsion base (71): indentation device

(72): Jack Unit (73): Reaction Wall

(74): deck stand 80: road

(81): cutter groove (90): secondary structure

100: railway 101: rail

(102): sleepers (110): railway ascending means

111: support member 112: support

(113): Hydraulic

The present invention relates to a method for digging underground structures using deck press-fitting, and more specifically, a new steel pipe propulsion space while carrying out excavation work, support installation work, and rail work using guide angle under the leading plate while promoting steel pipe. After securing the steel pipe, the steel pipe is pushed forward, and the work continues, and the deck is installed in the upper part of the excavated space to allow the vehicle to pass while the basement can be installed in the basement or a large underground structure can be built. It relates to an excavation method for building underground structures using deck indentation to be formed.

In general, the construction method for forming the underground structure is an open method and a non-open method.

The opening method is difficult to work if there is a structure on the ground, and if a road is installed, there is a problem in that land costs and civil complaints occur because of the construction of a bypass road, sewer rock or underground across existing roads and railways When it is necessary to install a roadway, a tunnel structure, etc., when it is difficult to transfer obstacles due to construction, or when it is impossible to attach due to obstacles or obstacles in vehicle communication, a non-opening method is used.

As the non-opening method, after manufacturing the concrete structure, the FJ method (Front Jacking Method), which is a method of pushing the structure to the construction point with a hydraulic jack, cuts the side of the steel pipe, installs formwork at the bottom to assemble the reinforcing bar and pipe at the top. Next, the NTR method (New Tubular Roof Method), which is a method of welding and waterproofing and placing concrete,

New Pipe Roof Method presses small steel pipe into the ground, reinforces the connection of steel pipe with reinforcing steel, and then casts mortar to form longitudinal and horizontally integrated steel pipe slab, and then excavates the inside to construct the structure. ), But

The FJ method has a problem in that the construction period is long, the construction cost is excessive, the soil layer is restricted a lot, and the shear surface is difficult to change direction because of the precast concrete.

In addition, the NTR method has a problem in that the air is long, the design must be accurate, and the expert's advice is required, as well as the actual site construction is difficult when the layers above the soft rock are continuous.

In addition, the new pipe-proof method has a long construction period, the cost is high, the actual construction is very difficult problem.

The present invention is created in order to solve the conventional problems as described above, while installing the leading plate on the ground, while propelling the steel pipe to the lower part of the excavation work and installing a support in the excavated space while securing a new propulsion space By continuously indenting the deck to the rear of the leading plate, it is possible to install various underground structures on the bottom of the deck while maintaining ground movement. It also provides the basis for building underground structures and sinking of the surface as in non-adhesive It aims to provide a method of digging underground constructions using deck press-fitting, which allows construction to be simplified, thereby reducing construction period and construction costs.

The present invention for achieving the above object, the propulsion base forming step of forming a propulsion base by digging on the outer both sides of the road and installing the indentation device and the deck bracket on one side of the propulsion base; A steel pipe installation step of placing a steel pipe press-fitted to cross the road in the propulsion base; A deck installation step of seating the deck unit on the deck holder and connecting the upper surface of the steel pipe to press the deck unit at the same time as the steel pipe is press-fitted; A cutter groove forming step of forming cutter grooves spaced at intervals of the width to be excavated to the road surface; Lead plate installation step to cover the upper surface of the space to be excavated by installing a leading plate to be guided through the cutter groove at the front end of the deck unit; Excavate the lower part of the leading plate by a predetermined distance in the forward direction of the steel pipe from the propulsion base of the one side, install the support on both sides of the excavated space to prevent the collapse, and install a guide angle on the top of the support deck deck unit Steel pipe advancement space to facilitate the advancement of the; A steel pipe press-in step of pressing the steel pipe into the steel pipe advancement space by using the press-fit device to advance the deck unit and the leading plate of the deck unit tip; Repeating the securing of the steel pipe advance space and the steel pipe pressing step to ensure an underground structure building space covered by the deck unit on the road surface; Characterized in that consisting of.

In addition, the method of installing the support in the steel pipe advance space securing step, the step of installing the lower support by digging the outer both sides of the steel pipe in the lower direction; Vertically installing a support pile on an upper portion of the lower support; Installing an upper support on an upper portion of the support pile; Filling the lower bearing support pile upper bearing; Characterized in that consisting of.

In addition, according to the nature of the ground when installing the support, characterized in that the earth plate is further installed between the support and the support.

In addition, the lead plate, a plurality of keys formed at a predetermined interval in the lower portion of the upper plate and the upper plate to be caught in the cutter groove, and a plurality of keys formed in the lower portion of the upper plate to cross the key It consists of a reinforcing rod to cover the upper portion of the space to be excavated.

In addition, the deck unit is provided with a pedestal at the bottom is characterized in that the friction is more easily pressed on the guide angle.

Meanwhile, the present invention provides a propulsion base forming step of forming a propulsion base by discharging on both sides of the outside of the railway and installing a press-fitting device and a deck bracket on one side of the propulsion base; Installing a rail lift means for installing a rail lift means below the rail to allow the train to pass and to excavate the lower rail; Installing a railway ascending means to elevate the railway to a predetermined height; A steel pipe installation step of placing a steel pipe press-fitted to cross the lower part of the railway in the propulsion base of the one side; A deck installation step of seating the deck unit on the deck holder and connecting the upper surface of the steel pipe to press the deck unit at the same time as the steel pipe is press-fitted; A leader plate installation step of covering a top portion of a space to be excavated by installing a leader plate which is hooked to the front end of the deck unit and seated on an upper surface of an excavation position; Excavate the lower part of the leading plate by a predetermined distance in the forward direction of the steel pipe from the propulsion base of the one side, install the support on both sides of the excavated space to prevent the collapse, and install a guide angle on the top of the support deck deck unit Steel pipe advancement space to facilitate the advancement of the; A steel pipe press-in step of pressing the steel pipe into the steel pipe advancement space by using the press-fit device to advance the deck unit and the leading plate of the deck unit tip; Repeating the steel pipe advancement space and the steel pipe pressurizing step to form an underground structure building space covered by the deck unit at the bottom of the railway, and then the railway lowering step to remove the railway ascending means to be seated on the floor; Characterized in that consisting of.

In addition, the railway ascending means is installed at a predetermined interval in the lower width direction of the railway, and install a plurality of support members positioned so that both ends extend on the propulsion base, and installs a pedestal for connecting both ends of the support members, respectively It is characterized in that the propulsion base is provided with a hydraulic device that allows the railway to be raised by raising the pedestal so that the train can be accompanied while the bottom of the railway can be excavated.

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

Figure 1 is an exemplary view schematically showing the construction of the trench for building underground structures under the road according to an embodiment of the present invention, Figure 2 is a perspective view showing the shape of the deck unit of the present invention, Figure 3 is a present invention 4 is a cross-sectional view showing a cutter groove of the present invention, FIG. 5 is a front view as viewed from a close face during the trench work of the present invention, and FIG. 6 is a view of a steel pipe and a deck unit of the present invention. 7 is a cross-sectional view showing the AA of FIG.

As described above, the present invention forms a propulsion base 70 capable of propelling steel pipes on both outer sides of the road 80. In the propulsion base 70 of any one of the propulsion base 70 is installed a press-fit device 71 to press the steel pipe 10, and covers the upper portion of the road 80 to be destroyed, the traffic of the vehicle The deck mounting bracket 74 is installed to continuously press the deck unit 20 to be excavated into the excavated space.

The press-fitting device 71 is a jack unit 72 installed to press-fit the steel pipe 10 and a reaction force wall 73 supporting the reaction force generated by the press-fitting of the steel pipe 10 of the jack unit 72. It is a common steel pipe indentation device consisting of

When the construction of the propulsion base 70 is completed, the steel pipe 10 to be press-fitted to the propulsion base 70 is positioned, and the deck unit 20 is seated on the deck holder 74 and the steel pipe ( The deck unit 20 is connected to the upper portion of the 10 to allow the deck unit 20 to be press-fitted at the same time as the steel pipe 10 is press-fitted.

Here, the deck unit 20 is installed along the deck 21 which is factory-manufactured to enable the passage of the vehicle as shown in FIG. 2, and the lower surface edge of the deck 21 to slide when the deck unit 20 is press-fitted. It is made of a pedestal 22 to facilitate this, the structure can be used, such as concrete PC (Precast) structure, reinforced plate, panel structure using glass fibers and composite materials.

When the preparation for press-fitting the steel pipe 10 into the ground is completed as described above, the cutter groove 81 is formed in the direction to break through the upper surface of the road 10, that is, in the width direction of the road 10.

The cutter groove 81 is formed to have a predetermined depth toward the ground as shown in Figure 4 and is formed to be spaced apart at intervals of the width of the road 80 to be broken by the steel pipe (10).

When the cutter groove 81 is formed on the upper surface of the road 80, the lead plate 30 is connected to the tip of the deck unit 10.

The leading plate 30 is provided to cover the upper portion of the space to be excavated through the membrane inside the steel pipe 10 to provide an excavation work space, as shown in Figure 3, the vehicle can be moved to the upper portion of the excavation space The upper plate 31 and the plurality of keys 32 spaced apart at predetermined intervals in front of the lower surface of the upper plate 31 so as to be fitted to the cutter groove 81, and the upper portion It is composed of a plurality of reinforcing members 33 installed to cross the key 32 in the lower portion of the plate 31, the key 32 is fitted into the cutter groove 81, along the cutter groove 81 Moved forward guided.

When the installation of the steel pipe 10, the deck unit 20, the lead plate 30 as described above is completed by the predetermined distance in the forward direction of the steel pipe 10 from the propulsion base 70 of one side of the lead plate 30 Excavate the lower part to form the steel pipe forward space.

Next, the steel pipe 10 is press-fitted into the steel pipe advance space using the press-fit device 71. At this time, the deck unit 20 connected to the steel pipe 10 is pressed into the ground along the steel pipe 10 and the deck unit 20 pushes the lead plate 30, the lead plate 30 is You will move forward.

That is, when the ground is excavated so that the steel pipe 10 can be press-fitted, the ground collapses into the steel pipe advancement space and the space for the leading plate 30 to move forward and the advancement space of the steel pipe 10 are secured. ) And deck unit 20, the lead plate 30 is to be advanced.

In addition, the support pipe 40 is installed on both sides of the space to be excavated when the steel pipe advancement space is formed so that the excavated space does not collapse.

In addition, a guide angle 60 is installed at the upper portion of the support 40 to allow the deck unit 20 to slide easily into the steel pipe advance space.

This excavation work, the installation work of the jibo 40, the installation of the guide angle 60 and repeating the process of press-fitting the steel pipe, another steel pipe to the rear of the press-fitted steel pipe 10 and the deck unit 20 By continuously connecting the 10 and the deck unit 20 and press-fitted, the trenches penetrating to the propulsion base 70 formed on the other side of the road 80 are completed.

The present invention is to provide a work space for the construction of an underground structure at the bottom of the deck unit 20 is installed deck unit 20 on the upper surface of the excavation space by excavating the road 80 in the same way as described above. .

In addition, the present invention can excavate the road 80 while maintaining the movement of the ground using the lead plate 30, it is possible to solve the toffee problem due to the collapse of the ground in the conventional non-adhesion.

On the other hand, the method of installing the support 40 is to further excavate the bottom surface of the excavation space formed in the lower plate 30 in the downward direction to install the lower support 41, the upper surface of the lower support 41 The support pile 43 is installed vertically in the upper support 42, the upper support 42 is installed on the lower support 41, the support pile 43, the upper support 42 Complete by backfilling with.

In addition, according to the property of the ground when the support 40 is installed, the earth plate 44 is further installed between the support 40 and the support 40 to prevent the collapse of both sides of the excavation space. That is, by installing the earth plate 44 between the support pile 43 and the support pile 43 to prevent the collapse of both sides of the excavation space.

The guide angle 60 has a 'L' shape, the horizontal portion 61 is coupled to the upper support 42 of the support 40, and vertically formed at one end of the horizontal portion 61 It is composed of a portion 62, is installed to face each other at the upper portion of the jibo (40).

Meanwhile, the guide angle 60 may be provided with a nail 63 inserted into the ground to be inclined downward through the vertical portion 62 to prevent the ground from being collapsed.

As the guide angle 60 is installed as described above, the deck unit 20 is installed to slide into the excavation space by railing the guide angle 60.

In addition, the deck unit 20 is installed as described above to cover the upper surface of the excavation space not only to allow the passage of the vehicle, but also to serve as a horizontal support so that the support does not fall inside the excavation space. .

That is, the deck unit 20 is inserted between the guide angles 60 so that the vertical support 40 is not inverted by earth pressure.

8 and 9 are a plan view and a side view schematically showing the construction state of the trench for building the underground structure in the lower portion of the railway according to another embodiment of the present invention,

As shown in the drawing, the present invention is to construct a trench that traverses the lower portion of the railway in a state where trains of the railway 100 can pass, first, forming a trench 70 on both sides of the railway 100 outside the propulsion base and The press base device 70 and the deck mounting bracket 74 are installed at the propulsion base 70.

When the propulsion base 70 is formed in this way, the railroad 100 is installed at a predetermined height at the bottom surface by installing a rail lift means 110 that supports the rail 101 of the railroad while digging the lower part of the railroad during the trenching operation. Raise to.

After raising the railway 100 as described above, the steel pipe 10 is positioned on the propulsion base 70 on one side, and the deck unit 20 is seated on the deck mount 74, and then the deck unit 20 is mounted. The deck unit 20 is press-fitted at the same time as the steel pipe 10 is press-fitted by connecting to the upper surface of the steel pipe 10, and a leader plate 30 connected to the distal end of the deck unit 20 is installed.

The lead plate 30 covers the upper portion of the space to be excavated and is advanced forward by the advancing of the deck unit 20.

When the preparation for press-fitting the steel pipe 10 is completed, the lower portion of the lead plate 30 is excavated by a predetermined distance in the forward direction of the steel pipe, that is, the width direction of the railway line 100, from the propulsion base 70 on one side. After installing the jibo 40 on both sides of the excavated space in the same manner as in one embodiment to secure the steel pipe advance space by preventing the excavated space to collapse.

In addition, by installing the guide angle 60 in the upper portion of the support 40 to support the deck unit 20 to move to the upper portion of the support 40 to facilitate the advance of the deck unit 20.

Thereafter, the deck unit 20 and the lead plate 30 are advanced by pressing the steel pipe 10 into the steel pipe advance space by using the press-fit device 71. After securing the steel pipe advance space by continuously constructing the process of pressing the steel pipe 10 to form a building space that is covered by the deck unit 20 across the lower portion of the railway (100).

When the excavation of the lower railroad 100 is completed, the railroad lifting means 110 is lowered to allow the railroad 100 to be seated on the floor, and then the railroad lifting means 110 is removed.

The railroad rising means 110 connects both end portions of the support members 111 and the support members 111 installed at predetermined intervals in the lower portion of the rail 101 in the width direction of the railroad 100, respectively. The pedestal 112 and the hydraulic device 113 for raising the pedestal 112 to raise the railway 100 supported by the support member 111.

At this time, the support member 111 is extended to the propulsion base 70 is formed at both ends of the railroad 100, the hydraulic device 113 is provided in the propulsion base 70 to raise the pedestal 112 By supporting, the support member 111 supported by the pedestal 112 is raised and the rails 101 are supported by the support member 111 to be lifted to raise the railroad 100 from the bottom surface.

On the other hand, the support member 111 is preferably installed between the sleeper 102 and the sleeper 102 so as to safely support the railway 100 when the train passes.

Steel pipe 10 of the present invention according to the embodiment as described above prevents the ground from collapsing to the inside of the excavation space, by excavating the ground through the interior of the steel pipe 10, provides an excavation space, the steel pipe ( The deck unit 20 and the lead plate 30 are advanced by the advance of the 10 so that the deck unit 20 can be installed in the upper portion of the excavation space.

In addition, according to the present invention, as shown in FIG. 10, after the excavation spaces are spaced at predetermined intervals, a secondary structure 90 such as a bridge having both ends fixed to the excavation space may be constructed.

That is, the steel pipe 10 of the present invention may be press-fitted to construct underground structures such as water and sewage pipes, communication lines, etc. through excavation spaces, and form a plurality of excavation spaces based on the excavation spaces. The structure 90 will be able to install.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The effect of the present invention can be expected by the configuration and action as described above, the excavation process is possible in the state that the ground is movable, and after the excavation can be installed a variety of underground structures, such as water and sewage pipes, communication lines, power outlets, By not constructing a separate bypass road, the air is shortened and construction cost is reduced, and the civil service is solved by securing a minimum workplace, and the toffee problem in the non-opening method can be solved. It is a very useful invention that can be used as.

Claims (9)

Propulsion base forming step of forming a propulsion base by digging on both sides of the road and installing the indentation device and deck bracket on one side of the propulsion base; A steel pipe installation step of placing a steel pipe press-fitted to cross the road in the propulsion base; A deck installation step of seating the deck unit on the deck holder and connecting the upper surface of the steel pipe to press the deck unit at the same time as the steel pipe is press-fitted; A cutter groove forming step of forming cutter grooves spaced at intervals of the width to be excavated to the road surface; Lead plate installation step to cover the upper surface of the space to be excavated by installing a leading plate to be guided through the cutter groove at the front end of the deck unit; Excavate the lower part of the leading plate by a predetermined distance in the forward direction of the steel pipe from the propulsion base of the one side, install the support on both sides of the excavated space to prevent the collapse, and install a guide angle on the top of the support deck deck unit Steel pipe advancement space to facilitate the advancement of the; A steel pipe press-in step of pressing the steel pipe into the steel pipe advancement space by using the press-fit device to advance the deck unit and the leading plate of the deck unit tip; Repeating the securing of the steel pipe advance space and the steel pipe pressing step to ensure an underground structure building space covered by the deck unit on the road surface; Dig method for building underground structures of the lower part of the road using deck indentation, characterized in that consisting of. The method of claim 1, The method of installing the support in the steel pipe advance space securing step, the step of installing the lower support by digging the outer both sides of the steel pipe in the downward direction; Vertically installing a support pile on the lower support; Installing an upper support on an upper portion of the support pile; Filling the lower bearing support pile upper bearing; Dig method for building underground structures of the lower part of the road using deck indentation, characterized in that consisting of. The method of claim 1, When the installation of the support, according to the nature of the ground earth ground plate construction method using a deck press-fitting, characterized in that the earth plate is further installed between the support and the support. The method of claim 1, The lead plate includes a top plate, a plurality of keys formed at predetermined intervals below the top plate to engage the cutter groove, and a plurality of reinforcement bars formed below the top plate to cross the keys. Dig method for building underground structures of the lower part of the road using deck indentation, characterized in that for covering the upper portion of the space to be excavated. The method of claim 1, The deck unit is provided with a pedestal in the lower portion of the trench structure for the construction of the underground structure of the lower road using the deck press-in, characterized in that more easily rubbed on the guide angle. Protruding base forming step of forming a propulsion base by digging on both sides of the railroad and installing a press-fitting device and deck bracket on one side of the propulsion base; Installing a rail lift means for installing a rail lift means below the rail to allow the train to pass and to excavate the lower rail; Installing a railway ascending means to elevate the railway to a predetermined height; A steel pipe installation step of placing a steel pipe press-fitted to cross the lower part of the railway in the propulsion base of the one side; A deck installation step of seating the deck unit on the deck holder and connecting the upper surface of the steel pipe to press the deck unit at the same time as the steel pipe is press-fitted; A leader plate installation step of covering a top portion of a space to be excavated by installing a leader plate which is hooked to the front end of the deck unit and seated on an upper surface of an excavation position; Excavate the lower part of the leading plate by a predetermined distance in the forward direction of the steel pipe from the propulsion base of the one side, install the support on both sides of the excavated space to prevent the collapse, and install a guide angle on the top of the support deck deck unit Steel pipe advancement space to facilitate the advancement of the; A steel pipe press-in step of pressing the steel pipe into the steel pipe advancement space by using the press-fit device to advance the deck unit and the leading plate of the deck unit tip; Repeating the steel pipe advancement space and the steel pipe pressurizing step to form an underground structure building space covered by the deck unit at the bottom of the railway, and then the railway lowering step to remove the railway ascending means to be seated on the floor; Deburring method for building underground structures of the lower railway using deck indentation, characterized in that consisting of. The method of claim 6, The railway ascending means is installed at a predetermined interval in the lower width direction of the railway, install a plurality of support members positioned so that both ends extend on the propulsion base, and installs a pedestal for connecting both ends of the support members, respectively, The underground structure of the lower part of the railway using deck press-fitting, which is provided with the propulsion base, is made of a hydraulic device that raises the pedestal so that the railway can be raised, and it is possible to accompany the train and to excavate the lower part of the railway. Construction excavation method. The method of claim 6, The method of installing the support in the steel pipe advance space securing step, the step of installing the lower support by digging the outer both sides of the steel pipe in the downward direction; Vertically installing a support pile on the lower support; Installing an upper support on an upper portion of the support pile; Filling the lower bearing support pile upper bearing; Deburring method for building underground structures of the lower railway using deck indentation, characterized in that consisting of. The method of claim 8, According to the nature of the ground when the support is installed according to the nature of the earth plate between the jibo and the jibo further characterized in that the trench construction method for the underground structure construction under the railway using deck indentation.

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