KR20160059954A - The construction method and structure of non-excavation tunnel that extrudes pc structure into the steel pipe - Google Patents

Abstract

The present invention relates to a non-excavation tunnel construction method, and a non-excavation tunnel construction structure. Provided are the non-excavation tunnel construction method, and the non-excavation tunnel construction structure configured by extruding a PC structure into a steel pipe comprising: a first effect of enabling tunnel construction using only a steel pipe having a constant size; a second effect of handling a change in a width and the height of a tunnel; a third effect of reducing a construction period and construction costs; a fourth effect of removing problems caused by a construction error; a sixth effect of significantly reducing construction costs; and a seventh effect of significantly reducing the construction costs.

Description

       BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a non-excavated tunnel by extruding a PC structure into a steel pipe,

[0001] The present invention relates to a method and a construction for a non-unfired tunnel, and more particularly, to a method of constructing a non-unfired tunnel using a large diameter, medium, small diameter steel pipe, In the method of constructing the steel pipe, it is to promote the deck frame to prevent the outflow of the particles to the gap between the steel pipes, while avoiding the interlocking between the steel pipes. In this way, when the steel pipe is propelled to the tunnel side, the PC structure is extruded into the steel pipe which is driven by friction between the base rail and the lower part of both sides of the structure and both ends of the pillar or slab and arbitrary position. .

As a general tunnel excavation method, there is a front jacking method, which is disclosed in Japanese Patent No. 509707 registered by the inventor of the present invention, Patent Application No. 2006-89993, Non-detachable tunnel excavation method, Discloses a tunnel construction method for a non-installation type tunnel, which is disclosed in Korean Patent Registration No. 10-0815568, and a structure applied thereto.

Particularly, Korean Unexamined Patent Publication No. 10-1073523 discloses a non-detachable tunnel excavation method and a tunnel construction structure used therein,

An upper large-diameter steel pipe step in which a plurality of upper large-diameter steel pipes are press-

A middle horizontal-horizontal steel pipe-propelling step that is pushed horizontally between upper and lower-diameter steel pipes to be remotely pressurized by the upper-

A grouting step of grouting reinforcement of the surrounding ground loosened by the mid-horizontal and /

A lower basic large-diameter steel pipe propelling step for propelling a lower-stage large-diameter steel pipe forming a foundation of a tunnel at a lower end side in the same position as the upper-

A medium-diameter vertical steel pipe propelling step for propelling a mid-diameter vertical steel pipe connecting the upper large-diameter steel pipe and the lower-

A bolt fastened to each steel pipe recovered in the process of driving the structure is disassembled, and the steel structure is connected to the steel pipe so that the steel wire is penetrated, A structure propulsion and an accessory article recovery step for recovering each steel pipe and accessories,

An inner soil excavation and a sliding plate retrieval step of excavating the inner soil of the structure propelled by the structure propulsion and the auxiliary article retrieving step,

And a lower slab installing step of installing the lower slab after recovering the remaining residues by internal slurry excavation,

It is possible to completely recycle various steel pipes and components required in the construction of the non-detachable tunnel to increase the degree of recycling of various constituent parts and make it possible to enter the tunnel structure first without installing the lower slab, In contrast to the conventional construction method, the existing construction method is applied to the tunnel excavation which is performed as a method to reduce the collapse of the tunnel and the end resistance caused by entering the tunnel structure including the lower slab, , It is possible to expect the effect of eliminating the problems that may arise from the air delay, increase of the construction cost, and waste of the work force due to the unnecessary installation of the equipment due to the construction method to reinforce the roadbed.

However, in the case of the above-mentioned patent, both small-diameter steel pipe and large-diameter steel pipe and large-diameter steel pipe are utilized, and a large diameter steel pipe of the center and both right side portions and a large diameter steel pipe of the base portion are required. Therefore, a large-diameter steel pipe, a Jung-gu steel pipe and a small-diameter steel pipe are all required, which increases the number and kinds of parts required for tunnel excavation,

In addition, when the large-diameter steel pipe of the center and both sides is a large-diameter steel pipe, the displacement of the road surface is caused at the position where the toe is small, which is very disadvantageous. In the case of pushing a small diameter steel pipe between the large- And the manufacturing cost is increased because the steel pipe manufactured by deforming the outer shape of the small diameter steel pipe is used so that the particle is not leaked out.

Korean Patent No. 10-1073523

The present invention has been devised to solve the above-mentioned problems, and it is an object of the present invention to provide a tunnel structure in which both right angles of a steel pipe constituting a tunnel can be formed at right angles, It is possible to reduce the number of steel pipes and reduce the number and types of steel pipes unnecessary by promoting the steel pipe to be maintained at an appropriate interval while propelling the steel pipe. It is an object of the present invention to simplify and ease the construction of tunnels and to remarkably reduce costs.

Also, since the present invention is applied to a method of forming a tunnel structure by a non-detachable method while minimizing a method using a PC structure and a steel pipe as much as possible, It is another object of the present invention to make it possible to realize various shapes ranging from a straight line to a smooth curve line.

In order to accomplish the above object, the present invention provides a method and structure for constructing a non-built-in tunnel by extruding a PC structure and a reinforcing bar into a steel pipe,

A step (S10) of installing a vertical steel pipe and a deck frame propulsion steel pipe assembled into a quadripartite structure in which a plurality of steel pipes of the same size and a horizontal spacing device are propelled in parallel at a predetermined height in a tunnel from a certain height of the tunnel,

A step (S20) of installing an external vertical steel pipe and a steel pipe in a steel pipe, which is assembled into a quadrant, in which a plurality of steel pipes of the same size are reinforced by a guide frame capable of adjusting the thickness and height of the structure in the height direction of the tunnel,

(S30) of installing a vertical vertical steel pipe and a support in a steel pipe assembled into a quadrant, in which a plurality of steel pipes of the same size are reinforced by a guide frame capable of adjusting the thickness and height of the structure in the height direction of the tunnel,

(Step S40), a step of installing an additional support facility, a step of preparing an oscillator paper and a structure, a step of recovering a support material in a steel pipe,

A step (S50) of collecting the retained material in the steel pipe by pulling the structure,

The inner and lower pieces of the steel pipe and the sliding plate recovery step (S60) for excavating the inside of the towed structure,

A lower slab installing step (S70) for installing the lower slab after recovering the inner and lower pieces of the steel pipe and the sliding plate by internal excavation,

And a finalizing step (S80) of packaging the various internal facilities and the ascon pavement after the lower slab installing step.

The present invention has a first effect that a tunnel can be constructed using only a steel pipe having a constant size so that the demand of the types of steel pipes required for the construction of the non-installation type tunnel, that is, the large diameter steel pipe and the small diameter steel pipe,

Since the deck frame and the guide frame are used, not only the second effect of enabling coping with the change in the width and height of the tunnel,

The third effect is that the number of steel pipes to be used is reduced because the deck frame is used intermittently,

The fourth effect of eliminating the problem caused by the construction error of the steel pipe between the large-diameter steel pipes due to the absence of the large-diameter steel pipes,

The fifth effect of eliminating the problem that the displacement of the ground due to the lack of the upper surface soil is caused by not using the upper large-diameter steel pipe,

The sixth effect that the cost can be remarkably reduced through reuse because the press-fitted steel pipe can be extracted,

As a seventh effect of greatly reducing the construction cost by applying the method of forming the tunnel structure by putting the field so as to form the tunnel structure by the non-adhered method safely while minimizing the method using the PC structure and the steel pipe, The simplicity and easiness of the construction and the efficiency of the work are all equipped, and the effect of seven places including the air, the construction cost, and the beauty can be expected.

30 to 49 are diagrams showing an embodiment according to the present invention,
30 is a view showing a process flow according to the working process of the present invention
31 is a view schematically showing a state in which a horizontal steel pipe and a deck frame are press-fitted in an upward direction on the upper side of the tunnel in the process flow of the present invention
32 schematically shows a state in which the vertical vertical steel pipe, the guide frame, and the outer basic steel pipe constituting the side wall of the tunnel, after pushing the horizontal steel pipe and the deck molds to the horizontal side of the tunnel, drawing
FIG. 33 is a cross-sectional view showing a state in which the vertical vertical steel pipe and the guide frame, the outer vertical steel pipe, Drawings that outline the state in which the support material is installed
Fig. 34 is a schematic cross-sectional view showing a state in which a fitting is removed and then a structure corresponding to the steel pipe piece is dried by a segment precast to gradually adjust the fixture while pulling or extruding the fixture;
FIG. 35 is a schematic cross-sectional view of a state in which a fixture is adjusted so as to adjust a fixture while progressively pulling or extruding a steel pipe piece after the support material is installed according to FIG. 33,
Fig. 36 is a schematic view showing a state in which an internal excavation and back-up, a center wall and a column are installed to install a guard of "H" steel capable of supporting the upper slab of the structure after pulling or extrusion of the structure is completed by Fig. Drawings showing sections
Fig. 37 is a schematic cross-sectional view of a state in which progressive excavation and a brace are provided to control the uplift of a structure due to lateral pressure in the state of internal excavation by Fig. 35 and Fig. 36
Fig. 38 is a schematic sectional view showing a state in which a lower slab is installed after completion of installation of a strut by Fig. 37
Fig. 39 is an enlarged view of a general cross section in a state in which a steel pipe and a support material are propelled on a tunnel horizontal portion and an outer vertical portion in Figs. 32 and 33
39A is an enlarged view of a state in which a brace material is installed inside an inner horizontal steel pipe
FIG. 39B is an enlarged view of a state in which an outer horizontal pipe and a support are installed inside; FIG.
39C is an enlarged view of a state in which a support member is installed inside the outer vertical portion and the vertical vertical steel pipe
Fig. 40 is an enlarged view of a general section in a state in which a steel pipe piece is removed in Fig. 39
41 is an enlarged view of a general cross section of a deck frame and a guider which are spaced apart from each other in the horizontal horizontal steel pipe in FIGS. 32 and 33
42 is an enlarged view of a general section showing a procedure of a process of removing a steel pipe piece by installing a support material in a location steel pipe where the outside horizontal steel pipe and the outside vertical steel pipe meet in Fig. 39
Fig. 43 is an enlarged view of a general section having a support member and a bracing supporting the inner horizontal steel pipe of Fig. 39
44 is an enlarged view of a general cross-section for installing a brace and a brace for supporting one side of the outer horizontal pipe of Fig. 39
45 is an enlarged view of a general cross section showing a procedure of a process of removing a steel pipe piece by installing a support material in a position steel pipe where the inner horizontal steel pipe and the central vertical steel pipe meet in Figs. 33 and 35
46 is an enlarged view of a general section of a state in which the outer primary steel pipe is propelled in Figs. 32 and 33
Fig. 47 is an enlarged view of a general section in a state in which the central basic steel pipe is pushed in Fig. 33
48 is an enlarged view of a general section in a state in which a steel pipe is pushed while a structure is pulled by a reaction force band in a tunnel in which a steel pipe is propelled
Fig. 49 is an enlarged view of a general section of a state in which "H" -shaped steel capable of supporting the upper slab is provided on both left and right sides in Fig. 36 and a center wall and columns are installed inside

In the present invention, there is a method in which a structure is added by a site casting method while reducing the area of precast of the structure to some extent while using steel pipes and deck molds having the same specifications, and a method in which a steel pipe is pushed to the ground in the longitudinal direction for a short time, The method of forming the whole tunnel structure, the method of deforming the structure from uniform linear shape to the curved shape, etc., are proposed to provide a method that is easy to construct, safer, reduces the construction cost, and shortens the air.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

The present invention, as shown in FIG. 30,

(S10), a step (S20) of installing the vertical support steel pipe in the outer vertical steel pipe and a step (S20) of installing the support member in the steel pipe, (S30), a step of removing the steel pipe piece, installing an additional support facility, fabricating an oscillator paper and a structure, installing a support base and a reaction force installing step (S40) in the steel pipe, (S50), inner and lower pieces of the inner digging and the steel pipe, a sliding plate recovery step (S60), a lower slab installing step (S70), and various interior facilities and finishing of the asbestos packing Step S80.

The process flow of the present invention and the respective constitutions thereof will be described.

Assembled in quadruplicate Horizontal portion  Steel pipe and horizontal gap assembly device Deck frame  Promotion Division In steel pipe  Steps for installation of maintenance materials ( S10 )

As shown in FIG. 31, this step implies a step for pushing the horizontal re-pipe and the deck frame 215 over the entire length from the region for forming the tunnel 1 to the upper side. The horizontal re- The inner horizontal steel pipe 200 can be divided into a steel pipe 200 and an outer steel pipe 200 '. In this case, as shown in FIG. 31, And then propelling the outer horizontal steel pipe 200 'in the longitudinal direction of the tunnel 1 while arranging the steel pipe 200. Subsequently, the deck frame 215 is propelled by the guider 201 attached to the steel pipe .

The inner horizontal steel pipe 200 applied to the present invention is provided with a guider 201 on both upper and lower sides for coupling with an adjacent deck frame 215 and a guider 201 ', and the deck frame 215, which is arranged and propelled in the circumferential direction of the horizontal steel pipes 200 and 200', is driven along the guider 201.

First, as shown in FIG. 39, the configuration of the inner horizontal pipe 200 will be described.

Both ends of the guider 201 are welded and fixed to the inner horizontal steel pipe 200 on both sides in the horizontal direction at a vertex on the central axis of the outer circumferential surface of the inner horizontal steel pipe 200.

The guider 201 fixed to the left and right sides of the inner horizontal pipe 200 in the longitudinal direction is preferably disposed to the entire length of the inner horizontal pipe 200 for easy seating of the adjacent deck frame 215 .

The guider 201 is fixed to the inner horizontal steel pipe 200 by bending steel plates so as to be opposed to each other as shown in the detail of Figure 39. The deck frame 215 is placed on the guider 201, .

Meanwhile, as shown in detail in FIGS. 39A and 41, the upper and lower surfaces of the inner horizontal steel pipe 200 are cut to fit the height of the structure to be towed before the inner horizontal steel pipe 200 is pushed, It is preferable to propel the nut BN together with the fitting 202 together.

This is to prevent the left and right vertical pieces 203 of the inner horizontal steel pipe 200 from being unbonded before the structure is pulled in order to facilitate the towing of the structure after supporting the inner horizontal steel pipe 200 in FIG. to be

Meanwhile, as shown in FIG. 39, it is preferable that the outer horizontal steel pipe 200 'has a different structure from that of the inner horizontal steel pipe 200.

As shown in FIGS. 39B and 39C, both ends of the guider 201 are welded and fixed to the outer horizontal steel pipe 200 'from the vertex on the central axis of the outer peripheral surface of the outer horizontal pipe 200' And a fitting member 231 on which the guide frame 230 can be fitted to both the left and right sides.

As shown in detail in FIG. 41, the upper and lower surfaces of the outer side horizontal steel pipe 200 'are cut at predetermined intervals in the progress direction, in accordance with the height of the structure to be pulled before the outer horizontal steel pipe 200' It is preferable to propel it with the bolt nuts BN together with the fitting 202. As shown in FIG. 39B, before the structure is towed, the support is installed in the outer horizontal steel pipe 200 'to release the fasteners in order to facilitate the towing of the structure. The vertical pieces 203 of the inner horizontal steel pipe 200 and the bottom pieces 205) in advance

Meanwhile, since the guider 201 installed on one side of the outer horizontal pipe 200 'is the same as the inner horizontal pipe 200 described above, a detailed description thereof will be omitted.

Next, as shown in FIG. 41, the structure of the deck frame 215 will be described.

The deck frame 215, which is a flat structure, is superimposed on the guider 201. The deck frame 215 binds a double deck plate to support the upper load, And is propelled by being mounted on the guider 201.

Since the spacing between the horizontal steel pipes 200 and 200 'may be different due to a construction error of the horizontal steel pipes 200 and 200', the deck frame 215 having the above-described structure may have a sufficient space in the lateral direction While blocking the outflow of upper soil particles.

On the other hand, the deck frame 215 is designed such that the deck frame 215 itself can be displaced in the longitudinal direction due to the tip resistance during propulsion and the propulsion by the tail jack, (216) to reinforce the deck's bone.

On the other hand, as shown in FIG. 39, since the structure is pulled into the upper and lower cut surfaces of the steel pipe in the horizontal steel pipes 200 and 200 ', it is necessary to fix the upper face piece 204 and the lower face piece 205.

41, a guide "L" -shaped steel pipe 206 and a fastener 207 are welded and fixed to the inside of the steel pipe, and a "11" (209) is bundled with the termination solution (210) so as to form a lattice shape in preparation for twisting, and then press-in along the guide "L" shaped steel (206) and the fastener (207).

In the case of the inside of the outer horizontal steel pipe 200 ', as shown in Fig. 42, ① ~ ④ after the support material is installed sequentially, remove the piece, install the ⑤ ~ ⑦ support material, and remove the vertical piece.

Next, as shown in FIG. 45, also in the central portion, after installing ① ~ ⑤ support materials sequentially, ⓐ remove the pieces and install ⑥ ~ ⑧ support materials and ② ~ ④ and ⓑⓒ vertical pieces and ⓔ steel plate pieces.

However, for the sake of safety, the vertical and undercut pieces should be removed after all of the vertical steel pipes have been propelled.

This is because, before all of the steel pipes have been completed and the support facility has been established, the steel pipe frame itself may be damaged or damaged due to the damage of the steel pipe circular shape.

When the structure is towed, the "11" motherboard support 208, the horizontal support members 209 and the mother support members 212 provided in the outer horizontal steel pipe 200 'are all moved forward, and the upper face piece 204 Are supported by the upper surface jaws 213 of the structure, so that the upper load can be supported.

At this time, the corner pieces 214 of the top face piece 204 and the outer horizontal steel pipe 200 'will be permanently buried and the inner facility will be recovered upon internal excavation.

As shown in detail in FIG. 41, the structure of the fastener 207 and the horizontal support member 209 installed on the fastener 207 is as follows. The fastener 207 welded at a predetermined interval to the steel pipe And the concave portions at both ends of the horizontal support member 209 can be pressed and extruded by the touch panel 211. This is a function that can resist the horizontal force and move forward when the structure is pulled .

When the assembling of the assembled horizontal steel pipes 200 and 200 'and the deck frame 215 are completed and the supporting work is completed, the horizontal steel pipes 200 and 200' and the deck frame 215, which are arranged at equal intervals as shown in FIG. 31, The upper horizontal portion of the structure

Assembled in quadruplicate The outer vertical portion  Steel Pipe Division In steel pipe Support  Installation steps ( S20 )

This step, which is applied to the present invention after the previous step (S10), is divided into an outer vertical steel pipe 220 and an outer steel pipe 240, and the detailed structure thereof will be described.

This is because the connecting structure is different between the outer vertical steel pipe 220 and the outer primary steel pipe 240 that are pushed to the left and right sides of the tunnel, and the outer reinforcement has a different structure.

First, as shown in FIG. 39C, the outer vertical reinforcement of the outer vertical steel pipe 220 and the connection structure thereof will be described.

The vertical vertical steel pipe 220 has the same configuration as the inner horizontal steel pipe 200 except that the guider 201 is not provided on the outer circumferential surface of the outer vertical steel pipe 220, (230) are bonded to each other

The upper and lower surfaces of the outer vertical steel pipe 220 are cut in accordance with the width of the structure to be towed before the outer vertical steel pipe 220 is pushed, and the bolt nut BN is screwed into the fittings 202 at regular intervals in the advancing direction. It is preferable to propel it in a state of being joined together. This is to remove the unbonded structure in order to facilitate the towing of the structure after supporting the inside of the vertical vertical steel pipe 220 before towing the structure and to remove the upper face piece 204 and the bottom piece 205 of the vertical vertical steel pipe 220 in advance To

Next, referring to the guide frame 230, as shown in detail in FIG. 39, a plurality of "L" shaped steels 233 are provided at upper and lower ends of a vertical steel plate 232 having constant heights on both sides, The horizontal reinforcement 235 is sandwiched in the horizontal perforation position in the state where the horizontally drilled "T" shaped steel 234 is fitted in the longitudinal direction. This is because buckling on the displacement force or vertical force with respect to the transverse earth pressure And to preserve the original shape.

In order to bind the vertical steel plates 232 on both sides, if the bundle reinforcing bar 236 is installed as a 'X' bracing in the supporting reinforcing bars 235 and fixed at a constant interval, the reinforcing bars 236 are inserted into the fittings 231, .

However, this bundle reinforcing steel (236) will be obstructed to the structure propulsion, so it should be removed after the steel pipe propulsion is completed.

On the other hand, as shown in FIG. 39, since the structure is pulled into the upper and lower cut surfaces of the steel pipe in the outer vertical steel pipe 220, it is necessary to fix the left and right vertical pieces 203.

For this purpose, a guide "L" shaped steel 206, a fixing plate 207 and a thin plate 211 are welded and fixed to the inside of the steel pipe before the propulsion, and the "11" 209 are bundled so as to form a lattice shape, and then press-fit along the guide "L" shaped steel 206 and the fastener 207.

However, for the sake of safety, the top and bottom pieces should be removed after both the outer and central vertical steel pipes have been propelled.

This is because, before all of the steel pipes have been completed and the support facility has been established, the steel pipe frame itself may be damaged or damaged due to the damage of the steel pipe circular shape.

On the other hand, when the structure is towed, all of the support facilities are moved forward, and the support by the structure is maintained so as to prevent the steel pipe pieces from falling due to the transverse earth pressure, in order to continuously enable traction of the subsequent structure .

40, the outer vertical steel pipe 220 is also fixed to the fastener 207 like the horizontal steel pipe 200, and the gasket 211 is inserted into the concave portion of the structure It should be constructed. This is because it is necessary for the shank 211 to keep the fixing of the vertical piece 203 of the steel pipe against the structure when towing the structure.

On the other hand, the top face piece 204 and the bottom face piece 205 must be removed before the structure is pulled. This allows the structure to be towed with good strength.

In addition, at the lowermost end of the vertical vertical steel pipe 220, The shape of the steel pipe 240 is configured such that the steel pipe is cut only on the upper surface and is re-joined. The state in which the guide frame 230 is joined to the upper surface of the steel pipe is the same as the vertical steel pipe 220.

As shown in FIG. 46, in the construction of the outer basic steel pipe 240,

It is preferable that the upper surface of the outer basic steel pipe 240 is cut in accordance with the width of the structure and propelled with the bolt nut BN together with the fitting 202 at regular intervals in the traveling direction. This is to remove the unbonding and to remove the top face piece 204 of the outer vertical steel pipe 240 before the structure is towed in the outer vertical steel pipe 220 to make it easier to tow the structure.

On the other hand, a rail 241 for pulling the structure is provided on the lower end of the outer basic steel pipe 240. The rail 241 is welded to the steel pipe, placed on the "L" shaped steel 242 aligned with the planned height, The rail 241 is connected to the rail 241 so that the rail 241 is protruded and a step 244 is provided on the inside of the rail 241. In this case, Quot; shaped < / RTI > section of the concave portion of the structure to be propelled along the step 244.

Further, the step 244 is formed by welding a steel plate to the steel pipe in an "a" shape. This is to prevent the step 244 from being destroyed upon contact with the structure, and to allow the structure to be pulled forward only while preventing the structure from moving to the left or right.

It is preferable that the guide frame 230 is coupled to the upper surface of the outer basic steel pipe 240. Since the structure of the guide frame 230 is the same as that described above, a description thereof will be omitted.

When the propulsion work of the outer vertical steel pipe 220 and the outer primary steel pipe 240 coupled with the guide frame 230 and the support facility are completed, the outer vertical steel pipe 220 as shown in FIGS. 32 and 33, As shown in Fig.

Assembled in quadruplicate Central vertical portion  Steel Pipe Division In steel pipe Support  Installation steps ( S30 )

As shown in FIGS. 32 and 33, the central vertical steel pipe 250 may be divided into a vertical vertical steel pipe 220 followed by a vertical vertical steel pipe 250 and a non-installed vertical steel pipe.

The outer vertical reinforcement pipe 220 and the outer peripheral steel pipe 240 have the same structure as the outer vertical reinforcement pipe 220 and the outer basic pipe 240 in terms of the external reinforcement and connection structure of the center vertical pipe 250 and the central basic pipe 260, Therefore, detailed description is omitted.

Meanwhile, the use of the socket S as a connecting member for making the steel pipe in the course of driving the various steel pipes is the same as that in the first embodiment, and thus a detailed description thereof will be omitted.

Steel pipe piece  remove, Additional support  Facility installation, oscillator paper and structure production, In steel pipe Support With recovery base Reaction force  Installation steps ( S40 )

48, in order to secure a space for drying the structure 2 to be towed in the region for forming the tunnel 1, a reaction force band 272 for towing and a number of times for recovering the steel pipe It is preferable to construct the oscillator paper 270 by selecting the most suitable space in front of and behind the tunnel to be excavated as shown in FIG. 48. In this case, 270 should be installed with some clearance space according to the length and width of the structure 2 to be towed.

In addition, the oscillator paper 270 is arranged so as to be well-balanced by compaction, blockage, concrete or the like so as not to cause uneven settlement, and the rail 241 attached to the outer and central basic steel pipes is connected to the structure 2 ), It is necessary to pay special attention and be installed in accordance with the schedule.

The collection base 271 is a base on which the support material is collected from the horizontal vertical pipe 200, the vertical vertical pipe 220, and the vertical vertical pipe 250, and should not be blocked by other obstacles or gravel .

Since the reaction force band 272 is a place where the hydraulic jack for directly towing the structure 2 is installed and must be supported by a large reaction force, the reaction force band 272 must be made of a rigid steel or the like. Is located on the opposite side of the ground 270 and must be supported by a large manual earth pressure and a prop.

When all the bases are formed, the structure is dried in the oscillator paper 270. The drying method is a general method and the drying is performed according to the presence or absence of the vertical vertical steel pipe 250. However, the upper slab, Since the PC stranded wire 273 must be disposed and penetrated through the wall and the central part, a PVC pipe must be embedded in the interior of the concrete before the concrete is poured.

However, the means for moving the structure 2 does not necessarily mean only a method of pulling, but also a method of pushing and pushing from behind.

Here, in the case of the structure 2 that is dried without a center wall or a column, the upper slab should be well supported by a trowel and dried so that the upper slab is not squeezed. It should be maintained.

The shape of the structure 2 to be dried should be a flat laminar shape, because it is a propulsion system that pushes the support facility installed in the steel pipe forward.

Since the dried structure 2 is coated with a sheet-like waterproofing material through curing and then surrounds the outer surface with a sliding plate as a thin sheet, the minimum contact between the upper face piece and the vertical piece is minimized during the pulling operation so that the friction coefficient is reduced .

Next, a PC strand 273 connecting the reaction force band 272 and the oscillator wheel 270 is connected to the steel pipe through the inside of the structure to provide a fixing device to the structure 2 and a hydraulic jack to the reaction force band 272 Leave.

On the upper surface side of the structure 2, a facility for fixing the upper surface pieces 204 and the corner portion pieces 214 so as not to be displaced is required. As shown in the upper surface detail of FIG. 40, The upper surface jaw 213 of the upper surface piece 204 and the corner piece piece 214 is connected to the upper surface jaw 213 and the curved surface is maintained And to prevent settlement from occurring.

45, a structure 2 for preventing the vertical frame of the steel pipe from being collapsed is dried, and a recess is formed in the side wall structure 2, The structure 2 is dried so that the thin plate 211 can be fitted in the concave portion.

Structure towing In steel pipe Support  Recovery step ( S50 )

This step refers to the step of recovering the support material while towing the structure (2) by the PC strand

When the pressure is applied to the hydraulic jack installed on the reaction force bar 272, the stroke moves backward along the PC strand, and the structure 2 is moved forward.

When the support material is withdrawn to the recovery base by the repetitive method, the support material is recovered. At this time, the recovered support material is recovered as it is in the original form.

At this time, the upper load is transferred to the lower piece 205 of the steel pipe through the upper slab of the structure 2. When the lower piece 205 of the steel pipe does not have a jaw, the curved surface of the lower piece 205 is expanded, It is necessary to compensate it by the "L" shape steel 276 or the like.

Meanwhile, the structure 2 is gradually pulled through the repetitive operation and proceeds to the inside of the tunnel 1. When the structure 2 is elongated and made into segments, the fixture is installed at the tail of each segment structure Respectively.

48, when pulling the first segment structure, the following two steps are taken: (1) the segment structure is constrained only to the segment structure, and (2) the segment structure, which is the next forward structure, (1) When the segment structure advances forward, the gap between the segment structures becomes wide, and the connection steel (277) connecting the first and second structures (2) to prevent the foreign soil from being pushed out ) Will support the earth pressure.

The connecting steel 277 is installed at the rear end of the segment structure and seated in the concave groove at the front end of the segment structure while the water-expansive index material is provided at the end of the segment structure at both sides to form a waterproof structure.

Further, it is necessary to install a dowel bar 278 between the segments at the middle height of the upper slab in order to suppress the displacement of the structure 2.

(2) When the gap between the segment structures is increased, (2) to pull the segment structure, (1) to release the fixing device of the segment structure, (2) to arrange the fixing device of the segment structure, If the fixing device is repeatedly restrained and released, it is possible to pull several segment structures such as ③ and ④ below.

At this time, in order to make it easier to fix and release the fixation device, ① internal gravels that enter the segment structure must maintain the angle of elevation to such an extent that the surface can be self-supporting, and it is important that they are excavated. The left and right side portions should be excavated as shown in Fig.

This is to prevent sagging because the center part supports the upper slab.

On the other hand, in the case of the structure 2 in which the wall or the pillar is provided at the central portion, the whole excavation is possible after the angle of relief as shown in FIG.

Inside excavation and the inside of the steel pipe and The lower piece  Sliding plate recovery step ( S60 )

When the structure 2 is pulled by the previous step, the inside of the structure 2 is excavated. In the case of the structure 2 having a wall or a pillar at the center, the upper half is first excavated, The excavation can be progressed while installing the brace 279 so that both side walls of the structure 2 are not displaced by the earth pressure. However, in the case of the structure having no wall or pillar at the center, The construction work should be done by applying the installation procedure in the field.

First, it is excavated in the direction of the one side to back up the excavated site, and then vertically drilled to install "H" pile. In the middle of the pile, a screw jack is installed to securely support the upper slab. And H beams and piece brackets are installed at the connection points of the intermediate piles to support the upper slab in the traveling direction. In the same way, the other side is equally equipped.

Next, after the lower section of the column is excavated, an intermediate wall or column is installed by a general method.

When the upper and lower half sections and the lower half section are excavated, the inner surface of the inner vertical piece 203 and the vertical vertical steel pipe 250 of the vertical vertical steel pipe 220, (Not shown), as well as one side or both sides of the vertical steel plate 232 of the guide frame 230.

The lower slab installation step ( S70 )

This step is a step of installing the lower slab (3). First, the foundation floor is laid out and laid concrete is laid so that the brace is laid, thereby creating an environment in which the reinforcing bars can be installed. In the floor, a sheet- And then the reinforcing bar of the lower slab 3 is disposed because the connecting reinforcing bar is assembled from a lower surface of the towed structure 2 by a coupler or the like.

At this time, in the case of the segment structure, since the expansion joint is constructed by separating the lower slab 3 to the segment, it is necessary to prepare for the expansion and contraction to the temperature.

After the concrete is laid and cured, the completed structure (2) is dried, so that it can be connected to another structure to be connected.

Thus, in the step of installing the lower slab, separate facilities can be provided on the lower floor, and an inverting facility can be provided.

Finishing step ( S80 )

When the lower slab installing step (S70) is completed, the gap between the outer surface piece of the steel pipe and the structure is filled with the cement milk so that the gap is not generated. In addition, all construction works will be completed if the process of finishing the construction such as electric piping, sidewalk block, grating, ascon packaging, line marking is completed.

S10; Vertical steel pipes, deck molds, and steel pipes are installed in 4 stages.
S20; 4 steps of outer vertical steel pipe installation and steel pipe installation
S30; Install the central vertical steel pipe and install the steel pipe in 4 parts
S40; Oscillator paper and structure production, storage of steel retaining material in steel pipe and reaction force step
S50; Towing of structures and recovery of steel pipes and steel pipes
S60; Inner digging and inner and lower pieces of steel pipe and sliding plate recovery step
S70; Lower slab installation phase
S80; Finishing step
One; Tunnel 2; structure
3; Bottom slab BN; Bolt nut
200; Inner horizontal steel pipe 200 '; Outer horizontal steel pipe
201; Guider 202; yoke
203; Vertical piece 204; Top face piece
205; Bottom piece 206; Guide "L" section steel
207; Fastener 208; "11 characters"
209; Horizontal support material 210; Close payment
211; A glue plate 212; Company support
213; An upper surface jaw 214; Corner bucket
215; Deckle 220; Outer vertical steel pipe
230; Guide frame 231; Shim
232; Vertical steel plate 233; "L" section steel
234; "T" section steel 235; Support reinforcement
236; Bundle bars 240; An outer basic steel pipe 241; Rail 242; "L" section steel
243; Bundle reinforcing bars 244; Step
250; Central vertical steel pipe 260; Central foundation steel pipe
270; Oscillator paper 271; Collection base
272; Reaction force band 273; PC Strand 275; A support 276; "L" section steel 277; Connection steel 278;
279; bracing

Claims (5)

A method of constructing a non-detachable tunnel construction,
A step (S10) of installing a vertical steel pipe and a deck frame propulsion steel pipe assembled into a quadripartite structure in which a plurality of steel pipes of the same size and a horizontal spacing device are propelled in parallel at a predetermined height in a tunnel from a certain height of the tunnel,
A step (S20) of installing an external vertical steel pipe and a steel pipe in a steel pipe, which is assembled into a quadrant, in which a plurality of steel pipes of the same size are reinforced by a guide frame capable of adjusting the thickness and height of the structure in the height direction of the tunnel,
(S30) of installing a vertical vertical steel pipe and a support in a steel pipe assembled into a quadrant, in which a plurality of steel pipes of the same size are reinforced by a guide frame capable of adjusting the thickness and height of the structure in the height direction of the tunnel,
(Step S40), a step of installing an additional support facility, a step of preparing an oscillator paper and a structure, a step of recovering a support material in a steel pipe,
A step (S50) of collecting the retained material in the steel pipe by pulling the structure,
The inner and lower pieces of the steel pipe and the sliding plate recovery step (S60) for excavating the inside of the towed structure,
A lower slab installing step (S70) for installing the lower slab after recovering the inner and lower pieces of the steel pipe and the sliding plate by internal excavation,
And a finishing step (S80) of paving various interior facilities and ascon pavement after the lower slab installing step. The method for constructing a non-built-in tunnel according to claim 1, wherein the PC structure is extruded into a steel pipe.
The method according to claim 1,
The structure 2, which is gradually pulled and extruded and moved to the inside of the tunnel 1, is made long, and when the PC strand is pulled, a fixture is installed at the tail of each segment structure. (2) only the segment structure (2) is restrained and the fixing device of the segment structure (2), which is the next sequentially advancing segment structure (2) (1) and the segment structure (2) so as to prevent the external soil from being pushed up, the gap between the segment (1) and the segment structure (2) And the dowel bar 278 is formed at the middle height of the structure 2 that suppresses the occurrence of displacement of the structure 2, The connecting steel 277 is installed at the rear end of the segment structure and seated in the concave groove at the front end of the segment structure while the water-expansive index material is provided at the end portions of both segment structures,
When the gap between the segments 1 and 2 is increased, the fixing device of the segment structure 2 is released and the fixing device of the segment structure 2 is restrained to pull the segment structure 2, (2) The PC structure is extruded into a steel pipe which is constructed so as to be capable of pulling a plurality of segment structures (2) because the segment structure (2) is pulled and the fixing device is repeatedly restrained and released.
The method of claim 1,
The horizontal piping 200 and the horizontal piping 200 are arranged on the upper side of the tunnel 1 and are arranged in parallel with each other. The horizontal piping 200 and the horizontal piping 200 are connected to each other. An outer vertical part and a vertical vertical vertical steel pipe 220 and 250 which are mutually driven along vertical regions of right and left outer parts and a central part in the horizontal extension pipe 200, And outer bases and central foundation steel pipes 240 and 260 that are propelled to the lower and left outer sides of the tunnel, respectively. In such a steel pipe, cutting, binding, and internal support in the steel pipe are performed according to the height and width of the structure, To form a flat laminated structure (2), applying a sheet-like waterproofing material through curing, then surrounding the outer surface with a sliding plate, which is a thin sheet, While the structure 2 is being moved and installed by pushing forward the support structure inside the steel pipe while extruding and pulling the steel body 2 into the steel pipe with the unbonded steel pipe, the inside is excavated, the lower slab 3 is installed, Wherein the PC structure is extruded into a steel pipe which fills the gap between the outer surface piece of the outer casing and the structure with cement milk.
4. The method of claim 3,
The upper and lower surfaces of the steel pipe are cut to form a guider 201 having a symbol combination of 'a and b', which is an accessory supporting the deck frame 215 to both upper ends of the outer peripheral surface of the horizontal re- The bolts are screwed together with the fittings 202 at regular intervals in the direction of the bolts BN, the bolts are installed in the horizontal steel pipe 200, the binding of the steel pipe before the structure is released, The vertical piece 203 is removed,
The outer horizontal pipe 200 'constitutes a fitting member 231 in which the guide frame 230 can be fitted to both sides of the outer peripheral surface in the horizontal direction and to the left and right sides of the lower surface of the outer horizontal pipe 200' Both sides are cut and the bolts are screwed together with the fittings 202 by the bolts NN. After the bolts are installed in the outer horizontal steel pipe 200 ', the bolts are released and the horizontal steel pipe 200 The vertical piece 203 and the bottom piece 205 are removed in advance,
The outer peripheral vertical steel pipe 220 is joined to the upper surface of the outer peripheral surface of the outer vertical steel pipe 220. The outer peripheral vertical steel pipe 220 may have an upper surface and a lower surface, The lower surface of the outer vertical steel pipe 220 is cut, and the bolt nut BN is engaged with the joint 202 at a constant interval in the direction of travel. After the steel pipe is installed in the outer vertical steel pipe 220 before the structure is towed, The upper surface piece 204 of the outer vertical steel pipe 220 and the lower surface piece 205 are removed in advance,
A plurality of "L" shaped steels 233 are provided at the upper and lower ends of a vertical steel plate 232 having a constant height on both sides and a "T" shaped steel 234 horizontally perforated in the "L" In order to bind the vertical steel plates 232 on both sides of the guide frame 230 having the construction in which the support reinforcing bar 235 is sandwiched between the horizontal reinforcing bars 235 and the horizontal reinforcing bars 235, Bracing, fixed at a predetermined interval, and then inserted into the fitting 231 to be propelled.
Since the structure of the outer vertical steel pipe 220 is pulled into the upper and lower cut surfaces of the steel pipe, it is necessary to fix the left and right vertical pieces 203,
For this purpose, a guide "L" shaped steel 206, a fixing plate 207 and a thin plate 211 are welded and fixed to the inside of the steel pipe before the propulsion, and the "11" 209 are bundled and installed so as to form a lattice shape and then press-fit along the guide "L" shaped steel 206 and the fastener 207,
The vertical vertical steel pipe 220 has the same structure as the vertical vertical steel pipe 220,
When the structure is towed, all of the supporting facilities are moved forward, and the PC structure is extruded into a steel pipe.
The method according to claim 1,
In order to install a slab capable of supporting the upper slab in order to install a wall or a pillar in a structure (2) in which a wall or a pillar is not previously installed in the central part,
In the direction of the one side, the middle soil was excavated, and the back-up of the excavated site was performed in the longitudinal direction, and then the vertical piercing was performed at regular intervals to install the "H" pile. In the middle of the pile, H beams and piece brackets are installed at the connection points between the upper slab and the middle pile to support the upper slab. In the same manner, And then extruding the PC structure into a steel pipe for installing the intermediate wall or the column by a general method.

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