JP5154782B2 - Tunnel repair method and tunnel repair lining plate - Google Patents

Description

  The present invention relates to a tunnel repair method applied to repair of lining concrete or the like on the inner surface of a tunnel, and a tunnel repair lining plate.

  As a method of repairing the tunnel inner surface that has been aged, for example, a lining plate made of precast concrete plate or steel plate is attached to the inner surface of the tunnel, and backfilling is performed between the lining plate and the inner surface of the tunnel (for example, Patent Documents 1 to 3), and a method of lining the inner surface of a tunnel (concrete lining) by using a slide form and a sheet metal and a REIT are known. In any repair method, tunnels cannot be used during the construction period, so efforts are being made to reduce construction costs by shortening the construction period.

  However, in the case of repair methods using lining plates, the lining plates are carried into the tunnel one by one by heavy machinery such as cranes and forklifts, attached one by one to the inner surface of the tunnel, and locked bolts etc. It was necessary to fix or install a pillow wall separately, and to attach these, and it was inevitable that the construction period was prolonged and the cost of construction was expensive.

  Also, especially in the case of repair of small cross-section tunnels, construction machines cannot be carried into the tunnel, so they are forced to be manually installed. Therefore, it is necessary to reduce the size of the members, and the construction period cannot be extended. There was a problem.

  Furthermore, in order to secure the existing internal space, it is required to reduce the thickness of the lining plate as much as possible. Therefore, if steel plates are used as the lining plate, rust prevention treatment such as painting is required. As a result, there were problems such as increased maintenance costs.

  On the other hand, when a thin precast concrete board with a thickness of about 5 cm is used as a lining board, not only the metal fittings and bolts that connect the lining boards are exposed, but it also takes a lot of work on the rust prevention and waterproofing of the joints, etc. There was a problem.

  In order to solve the above-mentioned problems, the present applicant has applied for an existing tunnel repair method and repair cart that can repair the inner surface of the tunnel extremely efficiently, in a short time, and at a low cost (Patent Documents). 4).

  In the invention of this Patent Document 4, a receiving member and a concrete foundation covering the receiving member are provided on both side wall portions of the tunnel, and a lining form consisting of a tunnel ceiling portion and side wall portions on both sides is formed in an arch shape, It is formed to be able to open and close in the tunnel radial direction by at least one hinge provided on the ceiling part or side wall part, and the lower end part of both side wall parts is placed on the receiving member and is embedded and fixed in the concrete foundation . When installing a floor slab formwork on the floor portion, both ends of the floor slab formwork are joined to the lower portions of both side wall portions, respectively.

JP 2003-227296 A JP 2001-227287 A Japanese Patent No. 2908777 JP 2006-188856 A

  The invention of the above-mentioned Patent Document 4 is a tunnel repair method in which a plurality of repair panels (backing plates) are integrated using a hinge, and then transported and installed in the tunnel and backfilled. Then, it is necessary to install the integrated panels without gaps without gaps, that is, to smoothly join the installed panels without gaps, and to prevent mistakes and differences between the panels between the pieces and between the rings. It becomes.

  Further, in the method of transporting the repair panel by using a hinge, the holding method for preventing the deformation of the panel that occurs during transport and facilitating the installation work has not been clear.

  The present invention relates to a method of repairing the inner surface of a tunnel using a repair panel integrated with a hinge, and smoothly joining the repair panel carried into the tunnel to the installed panel without any gaps between the pieces and between the rings. The tunnel repair method and tunnel repair cover can be installed without causing any mistakes or steps in the tunnel, and complete repair of the tunnel inner surface can be performed very efficiently, in a short time, and at low cost. A work board is provided.

The invention of claim 1 of the present invention covers the tunnel inner surface with lining plates, in the repair method of the tunnel to fill the back-filling material between the tunnel inner surface and lining plates, tunnel precast concrete lining plate Divided into four in the circumferential direction, the top and bottom panels are thick at the center and both ends , the side walls are thick at both ends , and the rising part rises integrally from the bottom plate along the tunnel inner surface. The arch-shaped panel is formed by connecting the side wall panels on both sides to the top end panel through hinges so that they can be opened and closed in the tunnel radial direction. The joint panel between the top panel and the side wall panel is joined without any step through the inter-piece level difference prevention mechanism provided on the joint panel, and the arch panel is installed adjacent to the tunnel axis. Pressed against the already arched panels, and step without bonded via a ring interstage difference prevention mechanism provided to the joint end faces the joining end face, adjacent the bottom plate panels arranged between the lower part of the lateral walls panels to the tunnel axis pressed against the bottom plate panel, tunnel, characterized in that step without bonding through a ring interstage difference prevention mechanism provided to the joint end faces the joining end face, connecting both ends of the bottom plate panel at the bottom of each side wall panels This is a repair method.

  In the present invention, for example, as shown in FIG. 1, a tunnel top section, a side wall panel, and a bottom panel panel are repaired with the same material obtained by dividing the entire circumference of the tunnel cross section into four parts. Connected to form an archable panel that can be opened and closed, transported in a closed state, and opened and installed, repairing the inner surface of the tunnel extremely efficiently, in a short time, and at low cost In addition, since the inside of the tunnel can be transported while being compactly closed, the repair of the small-section tunnel can be easily performed.

Furthermore, the top panel and the side wall panel are joined at the hinge position via an inter-piece step prevention mechanism such as an embedded pin, and the arched panels adjacent to each other in the tunnel axis direction and the bottom panel panels are embedded with an alignment function, etc. It is possible to obtain a complete and beautiful tunnel repair inner surface without any mistakes or steps by means of a step prevention mechanism between the rings , extremely efficiently, in a short time and at low cost.

According to a second aspect of the present invention, in the tunnel repair method according to the first aspect, the inter-piece level difference prevention mechanism includes a fitting structure with an embedded pin and a pin hole, and a fitting structure with a concavo-convex shape formed on the joint end face. or Ri buried hinge der between the joining end surfaces, provided at both ends thick part in the top end panel, the repair of tunnel in the side wall panel and being provided on the upper thick part It is a construction method.

  This is a mechanism for preventing a step difference between pieces that can be used for hinge joining of the top panel and the side wall panel. For example, a semicircular groove is provided on each joint end face, and a cylindrical pin is provided in a circular hole formed by these two grooves. By embedding, etc., a fitting structure with a buried pin and a pin hole is formed. In addition, a permanent structure hinge embedded between the joint end faces can be used instead of or in addition to a fitting structure in which the joint end faces are provided with recesses and protrusions that fit together, or a temporary hinge attached to the inner surface of the panel. Can be used.

The invention of claim 3 of the present invention, in the tunnel of the repair method according to claim 1 or claim 2, the inter-ring stepped prevention mechanism, Ri fitting structure der by embedded pin and alignment pin holes, The top panel is provided at the central thick part and the thick parts at both ends, the side wall panel is provided at the upper and lower thick parts, and the bottom plate panel is provided at the connecting part between the bottom plate part and the rising part. It is a tunnel repair method characterized by

Inter-ring step prevention mechanism used for inter-ring joining between arch-shaped panels adjacent to each other in the tunnel axis direction and bottom panel panels. For example, an alignment pin hole having a taper that narrows toward the inside at each joining end face, A fitting structure configured by providing a buried pin in which a base end portion is buried in a panel in a shape of a distal end portion fitted in a pin hole can be used.
According to a fourth aspect of the present invention, the alignment pin hole has a taper that narrows toward the inside, and the embedded pin has a distal end shape that fits into the alignment pin hole, and a base end portion of the alignment pin on the panel. The tunnel repair method according to claim 3, wherein the tunnel is repaired.
According to a fifth aspect of the present invention, a ceramic insert with packing is provided in the central thick portion of the top panel and the upper thick portion of the side wall panel. The tunnel repair method according to any one of claims 1 to 4, wherein the tunnel is prevented from being deformed by adjusting the extrusion bolts penetrating the top end panel and the side wall panel. It is.
According to a sixth aspect of the present invention, the bottom plate panel is composed of a single panel whose lower surface is subjected to a surface treatment with a non-woven fabric, and a plate for preventing separation from the backfill material is attached to the back surface. The tunnel repair method according to any one of claims 1 to 5, wherein a stainless steel insert is provided.
The invention according to claim 7 of the present invention is characterized in that the side wall panel and the bottom plate panel are joined via a height adjusting bolt attached to a lower end portion of a lower thick portion of the side wall panel. The tunnel repair method according to any one of Items 1 to 6.

According to an eighth aspect of the present invention, in the tunnel repair method according to any one of the first to seventh aspects, the arched panel is formed by using a drawing means for connecting and drawing the arched panels together. It is a tunnel repair method characterized by pressing against an installed arched panel.

  The arched panel composed of the top end panel and the left and right side wall panels is smoothly pulled and pressed by the pulling means disposed at the hinge position and the lower end of the leg so that they can be joined easily. For the pulling means, for example, a screw rod system using a long bolt and a nut can be used. The bottom plate panel can be joined by pressing with a hand jack installed on the bottom of the tunnel, for example.

According to a ninth aspect of the present invention, in the tunnel repair method according to the eighth aspect , the attracting means has a long bolt and a nut for connecting the arched panels adjacent in the tunnel axial direction, and is attached to the long bolt. It is a tunnel repair method characterized in that it is configured to be pulled by tightening a nut.

  This is the case where the pulling means arranged at the hinge position of the arched panel and the lower end of the leg part is a screw rod system, and the sleeve is fixed to the substrate of a pair of hinges adjacent to the arched panel adjacent in the tunnel axis direction by welding or the like Then, both ends of the long bolt are inserted into the pair of sleeves, nuts are screwed onto the threaded portions protruding from the sleeves, and tightened to draw the panels together. At the lower end of the leg, a long bolt can be attached using an insert into which a bolt for adjusting the height of the side wall panel is screwed.

The invention of claim 10 of the present invention is a lining plate for tunnel repair which is installed so as to cover the inner surface of the tunnel and is filled with a backfilling material between the inner surface of the tunnel, and the lining plate made of precast concrete is tunneled. By dividing into four in the circumferential direction, the top and bottom panels are thick at the center and both ends , the side walls are thick at both ends , and the rising part rises integrally from the bottom plate along the tunnel inner surface. is composed from the bottom panels having, in top end panel lateral walls panels are connected via the swinging open, respectively hinged to the tunnel radially, the joining end face and the side wall panels at both ends thick part of the top end panel the joining end face of the upper thick part, fitting structure according embedded pin and pin hole, fitting structure according to asperities formed on the joining end face or by buried hinge between the joint end surfaces, Over rce step prevention mechanism is provided, the joint end surfaces between the ring in the central thick part and both end thick part and the thick part and the connecting portion between the rising portion bottom plate portion of the bottom plate panels of the upper and lower side wall panels of the top end panel Is a tunnel repair lining plate provided with a mechanism for preventing a step difference between rings by an embedded pin and an alignment pin hole.

It consists of a top panel, a side wall panel, and a bottom panel panel made of the same material that is divided into four sections on the entire circumference of the tunnel cross section. It is an arched panel with a hinge structure that can be opened and closed by connecting the top panel and the side panel with a hinge. The side wall panel is joined at the hinge position via an inter-piece step preventive mechanism such as an embedded pin, and the inter- ring step preventive mechanism such as an embedded pin with a centering function between the arched panels adjacent to each other in the tunnel axis direction and the bottom panel panels. This is a tunnel repair lining plate that is pressed and bonded through a tunnel, and even in a small cross-section tunnel, the complete and beautiful tunnel repair inner surface without any mistakes or steps is extremely efficiently, in a short time and at low cost. Can be obtained.

According to an eleventh aspect of the present invention, in the tunnel repair lining plate according to the tenth aspect , the long bolt of the pulling means comprising a long bolt and a nut for connecting the arched panels adjacent in the tunnel axial direction is attached. A lining plate for tunnel repair characterized in that a sleeve is attached to a hinge.

  This is a case where a screw rod type pulling means is provided at the hinge position of the arched panel, and the panels can be pulled and joined together simply by tightening the nuts, and the panels can be easily pressed and joined together with a relatively simple mechanism. Can do. After the repair is completed, it will be removed together with a temporary hinge.

  The quadruple panel used in the present invention is made of precast concrete and is mixed with ultra high strength fiber reinforced concrete, for example, reinforcing fibers such as steel fibers, stainless fibers, and amorphous fibers, and reactive fine powder (silica fume, etc.). If fiber-mixed concrete using is used, it is possible to reduce the thickness and weight.

  Since the present invention is configured as described above, the following effects can be obtained.

  (1) Repair the tunnel with the same material top end panel, side wall panel, and bottom panel panel divided into four parts, and connect the top end panel and the side wall panel with a hinge to form an arched panel that can be opened and closed. Since this is transported in a closed state and opened and installed, the tunnel inner surface can be repaired extremely efficiently, in a short time, and at low cost.

  (2) In addition, the hinged arched panel consisting of the top panel and the side wall panels on both sides can be closed compactly and transported through the tunnel, so that the small-section tunnel can be repaired easily.

(3) The top panel and the side wall panel are joined at the hinge position via an inter-piece step prevention mechanism such as an embedding pin, and the arched panels adjacent to each other in the tunnel axis direction and the bottom panel panels are embedded with an alignment function. for joining by pressing through the ring between the step preventing mechanism etc., very efficiently a complete and clean tunnel repair inner surface with no misalignment-step, it is possible in a short time, and obtained at a low cost.

  (4) By providing pulling means with long bolts and nuts on the arched panel, the panels can be pulled and joined together simply by tightening the nuts, and the panels can be easily pressed and joined together with a relatively simple mechanism. Can do.

  Hereinafter, the present invention will be described based on the illustrated embodiments. FIG. 1 is a vertical sectional view parallel to the direction perpendicular to the axis showing an example of the tunnel after inner surface repair according to the present invention, and a vertical sectional view parallel to the axial direction. FIG. 2 is a partial detail view of FIG. FIG. 3 is a front view, side view, and rear view of the top panel. FIG. 4 is a partial detail view of FIG. FIG. 5 is a side view, rear view, and front view of the side wall panel. FIG. 6 is a partial detail view of FIG. FIG. 7 is a side view, front view, side view, and rear view of the bottom plate panel. FIG. 8 is a partial detail view of FIG. FIG. 9 is a side view showing an example of a panel pulling means used in the present invention.

  As shown in FIG. 1, the inner surface of the tunnel 1 is covered with a ring-shaped lining plate 2 divided into an appropriate length in the axial direction of the tunnel, and mortar or concrete is interposed between the inner surface of the tunnel 1 and the lining plate 2. In the tunnel repairing method for filling the backfill material 3 such as the above, in the present invention, the lining plate 2 is divided into four in the circumferential direction of the tunnel, and the top panel 10, the side wall panels 11, 11 on both sides thereof, and the bottom plate A panel (invert panel) 12 is used. All these panels are made of precast concrete. For example, if ultra high strength fiber reinforced concrete using reactive fine powder (silica fume, etc.) mixed with reinforcing fibers such as steel fibers, stainless fibers, and amorphous fibers, the panel can be thinned. .

  The piece length in the tunnel circumferential direction of the arcuate top panel 10 arranged along the ceiling portion of the tunnel 1 in the front view is set to, for example, 45 degrees in the left-right direction from the center line of the tunnel zenith. The angle is not limited to 45 degrees and may be any other angle.

  The side wall panel 11 is a curved plate arranged along the left and right side wall portions of the tunnel 1, and the upper end portions thereof are rotatably connected to both end portions of the top panel 10 via hinges 13, respectively. Can be opened and closed. As shown in FIG. 2A, the hinge 13 is a temporary fitting that is attached to the inner surface of the joint between the top panel 10 and the side wall panel 11 with a bolt, and the side wall panel 11 is rotated inward to be in a closed leg state. can do.

  The top panel 10 and the pair of left and right side wall panels 11 constitute an arched panel having a hinge structure. A transport cart (not shown) is used to carry this arched panel into the repair site in the tunnel. The arched panel is suspended on the support frame on the transport carriage, the hinge 13 is supported by the support plate of the support frame, and the side wall panel 11 is held in a closed leg state for transport. Thereby, the deformation | transformation of the panel which generate | occur | produces at the time of conveyance is prevented, and installation work becomes easy.

  The bottom plate panel 12 is a curved plate arranged along the top surface of the floor portion (inverted portion) of the tunnel, and the joining position of the side wall panel 11 and the bottom plate panel 12 is arbitrarily set according to the tunnel shape and construction conditions. . In the case of the prior art, the floor portion corresponds to multiple divisions in which several small panels are combined, but the bottom plate panel 12 is constituted by a single panel.

  In addition, as shown in FIG. 2B, for example, an in-situ cast concrete 14 such as ultra-high strength fiber reinforced concrete is used for the joining structure of the side wall panel 11 and the bottom panel 12. Further, at the left and right corners of the floor portion, a step portion 19 is formed by an L-shaped steel material 17 attached to a leg insert reinforcing bar 16 having a lower portion inserted into the post-cast anchor 15 and a cast-in-place concrete 18. The side wall panel 11 is supported by the step portion 19 through a height adjustment bolt 20 attached to the lower end portion of the side wall panel 11 so that the height can be adjusted. The rising portions of the left and right end portions of the bottom plate panel 12 are located inside the lower end portion of the side plate panel 11, and the concrete 14 is placed therebetween. This joining structure is not limited to this, and other joining structures may be used.

  Moreover, as shown in FIG.2 (c), the intermediate part of the baseplate panel 12 is installed on the L-type steel material 23 attached to the reinforcing bar 22 by which the lower part was inserted in the back strike anchor 21, and on the back surface The plate 25 attached with the bolt 24 prevents the peeling from the backfill material 3.

  Furthermore, in the present invention, in order to prevent the occurrence of a level difference between the panel perpendicular to the tunnel axis and the adjacent panel in the tunnel axis direction, the inter-piece level difference prevention mechanism and the level difference between the rings made of resin or metal accessories. A prevention mechanism is embedded in the joint end face of the panel. For the inter-piece step prevention mechanism, for example, a fitting structure with an embedded pin and a pin hole, a fitting structure with a concavo-convex shape formed on the joint end face, or a permanent hinge that is buried between the joint end faces is used. For the inter-ring level difference prevention mechanism, a fitting structure using an embedded pin and a pin hole is used.

  3 and 4 show an example of the top end panel and a step prevention mechanism thereof. The top panel 10 is thick at the center and both ends, and is provided with a grouting hole socket 30 at the center of the center thick part, and with a packing through which bolts for preventing deformation of the panel are passed through on both sides. A ceramic insert 31 is provided. A ceramic insert 32 with packing into which a bolt for attaching a hinge is screwed is provided on the inner surface of the thick part at both ends.

  The inter-piece step prevention mechanism includes a semicircular concave groove 33 formed on a joint end surface parallel to the tunnel axis direction at both end thick portions of the top panel 10 and a columnar convex portion (not shown) fitted in the groove. ). The concave groove 33 is disposed at a hinge mounting position, and a step between the top panel 10 and the side wall panel 11 is inserted by inserting a cylindrical convex portion between the concave groove 33 and a concave groove of the side wall panel 11 described later. Is prevented.

  The inter-ring step prevention mechanism is composed of a centering pin hole 34 and a stainless steel insert 35 provided on the joint end faces parallel to the direction perpendicular to the tunnel axis on both sides of the top panel 10. The centering pin hole 34 and the insert 35 are formed in the center thick part and the both end thick parts of the top panel 10, and the insert of the top panel 10 in which the pin (not shown) inserted into the insert 35 is already installed. By inserting in 35, the level | step difference between the top-end panels 10 arranged in the tunnel axial direction is prevented. The alignment pin hole 34 has a taper that narrows toward the inside (see FIG. 4E). In addition, the top end panel 10 is also provided with four penetration inserts for demolding (see FIG. 3).

  5 and 6 show an example of the side wall panel and its step prevention mechanism. The side wall panel 11 is thick at both ends, and grout hole sockets 40 and 41 are provided at the center and upper thick portions. A ceramic insert 42 with packing into which a bolt for attaching a hinge is screwed is provided on the inner surface of the upper thick portion. Below that, a ceramic insert 43 with packing into which an extrusion bolt for preventing panel deformation is screwed is provided.

  A semicircular concave groove 44 is formed at the hinge position on the joint end surface parallel to the tunnel axis direction in the upper thick wall portion of the side wall panel 11, and the concave groove 44 and the concave groove 33 of the ceiling panel 10 described above. An inter-piece step prevention mechanism is configured. The inter-ring step prevention mechanism is the same as that of the top panel 10, and includes a centering pin hole 45 and a stainless steel insert 46 provided in the upper and lower thick portions. An insert 47 into which the height adjusting bolt 20 is screwed is provided at the same position as the hinge position at the lower end of the lower thick portion of the side wall panel 11. In addition, the side wall panel 11 is also provided with four through inserts for demolding (see FIG. 5).

  7 and 8 show an example of the bottom plate panel and its step prevention mechanism. On both ends of the bottom plate panel 12, a rising portion 51 is integrally formed that rises from the bottom plate portion 50 along the inner surface of the tunnel, and a grout hole socket 52 is provided in the center of the bottom plate portion 50. A stainless steel insert 53 into which the bolt 24 of the plate for mounting the above-described peeling preventing plate is screwed is provided. This insert 53 is also used for demolding.

  The inter-ring level difference prevention mechanism is the same as that of the top panel 10 and the side wall panel 11, and includes a centering pin hole 54 and a stainless steel insert 55 provided at a connection portion between the bottom plate part 50 and the rising part 51 (see FIG. 8 (a) and (b)). Note that the bottom surface of the bottom panel 12 is subjected to a surface treatment with a nonwoven fabric 56.

In the present invention, the arched panel composed of the top panel and the side wall panel is drawn to the installed arched panel adjacent in the tunnel axis direction by the drawing means, and the joint surface between the rings is brought into close contact without any step. FIG. 9 shows an example of the pulling means 60, in which the hinge 13 is used.

In FIG. 9 , the pulling means 60 includes a sleeve 61, a long bolt 62, and a nut 63. The sleeve 61 is welded to the adjacent hinge 13 substrates in the adjacent unitary top panel 10 and side wall panel 11, respectively. The both ends of the bolt 62 are inserted into the pair of sleeves 61, 61, and the nuts 63 are respectively screwed into the both ends of the long bolt 62 projecting outward from the sleeve 61 and tightened to draw the panels together. Pulling between the rings can be easily performed.

  Using the tunnel repair lining plate having the above-described configuration, for example, the tunnel repair method is performed in the following procedure.

(1) The top panel 10, the side panel 11, and the bottom panel 12 manufactured at the factory are temporarily placed in an assembly yard, and the top panel 10 and the side panel 11 are assembled using an assembly jig. A sealing material, a pin for a step prevention mechanism, and the like are attached to the joint surface between the pieces of the top end panel 10 and the side wall panel 11 and the joint surface between the rings. A board on one side of the hinge 13 is attached to the upper part with bolts, the top end panel 10 is suspended on the pair of side wall panels 11, and the hinges 13 of the side wall panel 10 are attached to both ends thereof with bolts.

(2) The assembled arched panel consisting of the top panel 10 and the side wall panel 11 is hung on a transport carriage installed at the entrance of the tunnel, supported at the position of the hinge 13, and the left and right side wall panels 11 are closed inside. Carry in the tunnel with the legs closed. For example, an arched panel for several rings such as three rings is linearly arranged in the tunnel axis direction on the transport carriage and is transported by a power vehicle.

(3) When arriving at the construction position, the top panel 10 is raised using a jack. The side wall panel 11 is rotated outward, and the height is adjusted by a height adjusting bolt 20 attached to the lower end portion of the side wall panel 11. The piece-to-piece joining surfaces of the top panel 10 and the side wall panel 11 are joined without a step by an inter-piece step prevention mechanism. Move the transport cart and reassemble several rings. When the assembly is completed, the transport cart is carried out of the tunnel.

(4) The next arched panel is drawn against the installed arched panel using the pulling means 60, and the top panel 10 adjacent to the tunnel axis direction and the side wall panels 11 are stepped by the step difference prevention mechanism between the rings. Join without any loss. The panel is prevented from being deformed by adjusting an extruding bolt for preventing panel deformation penetrating the top panel 10 and the side wall panel 11.

(5) The backfill material 3 is filled on the back side of the top end panel 10 and the side wall panel 11 of the arch-shaped panel for several rings. The top panel 10 and the side wall panel 11 are supported by a supporting cart, and the opening is closed with a cement milk bag or the like to grout.

(6) Lay the bottom panel 12 for several rings. A plurality of bottom panel panels are stacked and transported by a transport cart, and are suspended and installed on the tunnel invert part of the construction site. Rails such as a carriage are removed in advance. For example, using a hand jack, a reaction force is applied to the bottom surface of the tunnel, and the bottom plate panel 12 is pressed and joined to the installed bottom plate panel 12. The bottom plate panels 12 are joined without a step by a step prevention mechanism between rings.

(7) A cast-in-place concrete 14 such as ultrahigh strength fiber reinforced concrete is placed between the lower end of the side wall panel 11 and the end of the bottom panel 12 and joined. Repairing is completed by filling the back surface of the bottom panel 11 with the backfill material 3. The temporary hinge 13 is removed.

  In addition, the said repair construction method is an example, and is not limited to this. Moreover, it is applied to the inner surface repair of various tunnels.

It is an example of the tunnel after the inner surface repair which concerns on this invention, (a) is a vertical sectional view parallel to a tunnel axis perpendicular direction, (b) is a vertical sectional view parallel to a tunnel axis direction. FIG. 2 is a partial detailed view of FIG. 1, (a) is a detailed view of an X portion, (b) is a detailed view of a Y portion, and (c) is a detailed view of a Z portion. It is the top end panel of FIG. 1, (a) is a front view, (b) is a side view, (c) is a rear view. FIG. 4 is a partial detailed view of FIG. 3, (a) is a sectional view taken along the line DD, (b) is a detailed view of part A, (c) is a detailed view of part B, (d) is a detailed view of part C, e) is a detailed view of the alignment pin hole, and (f) is a detailed view of the grout hole. 1. It is a side wall panel of FIG. 1, (a) is a side view, (b) is a rear view, (c) is a front view, (d) is CC sectional drawing. FIG. 6 is a partial detailed view of FIG. 5, (a) is a detailed view of the A portion, (b) is a detailed view of the B portion, (c) is a detailed view of the grout hole, (d) is a detailed view of the grout hole, e) is a detailed view of the alignment pin hole. BRIEF DESCRIPTION OF THE DRAWINGS It is a baseplate panel of this invention, (a) is a side view, (b) is a front view, (c) is a side view, (d) is a rear view. FIG. 8 is a partial detailed view of FIG. 7, (a) is a detailed view of part A, (b) is a detailed view of part B, (c) is a detailed view of a grout hole, and (d) is a detailed view of an alignment pin hole. It is. It is an example of the drawing means of the panel used by this invention, (a) is a side view, (b) is an enlarged side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Tunnel 2 ... Ring-shaped lining board 3 ... Backing material 10 ... Top panel 11 ... Side wall panel 12 ... Bottom board panel (invert panel)
DESCRIPTION OF SYMBOLS 13 ... Hinge 14 ... Cast-in-place concrete 15 ... Post-cast anchor 16 ... Leg insert reinforcement 17 ... L type steel 18 ... Cast-in-place concrete 19 ... Step part 20 ... Height adjustment bolt 21 ... Post-cast anchor 22 ... Reinforcing bar 23 ... L-shaped steel material 24 ... Bolt 25 ... Plate 30 ... Groat hole socket 31 ... Ceramic insert with packing 32 ... Ceramic insert with packing 33 ... Semicircular groove 34 ... Aligning pin hole 35 ... Stainless steel insert 40, 41 ... Grout hole socket 42 ... Ceramic insert with packing 43 ... Ceramic insert with packing 44 ... Semicircular groove 45 ... Alignment pin hole 46 ... Stainless steel insert 47 ... Insert 50 ... Bottom plate part 51 ... Rising part 52 ... Grout Hole socket 53 ... stainless steel Concerts 54 ... aligning the pin holes 55 ... Stainless insert 56 ... nonwoven fabric 60 ... attracted means 61 ... sleeve 62 ... long bolt 63 ... nut

Claims (11)

Covering the tunnel inner surface with lining plates, in the repair method of the tunnel to fill the back-filling material between the tunnel inner surface and lining plate, divided into four precast concrete lining plate tunnel circumferential direction, the central portion The top panel is composed of a thick top panel , both ends of which are thick side walls, and a bottom panel having a rising portion that integrally rises from the bottom plate along the inner surface of the tunnel. The side wall panels on both sides are connected to each other via hinges so as to be swingable in the tunnel radial direction to form an arched panel, and the closed arched panel carried into the tunnel is opened to open the top panel and the side wall. The joint end faces of the panels are joined without a step through the inter-piece step prevention mechanism provided on the joint end face, and the arch panel is pushed against the installed arch panel adjacent in the tunnel axis direction. With, and without any step bonded via a ring interstage difference prevention mechanism provided to the joint end faces the joining end face, pressed against the bottom plate panels arranged between the lower part of the lateral walls panels to the bottom panels adjacent to the tunnel axis, repairing method of the tunnel, characterized in that to step without bonded via a ring interstage difference prevention mechanism provided to the joint end faces the joining end face, connecting both ends of the bottom plate panel at the bottom of each side wall panel. 2. The tunnel repairing method according to claim 1, wherein the inter-piece level difference prevention mechanism includes a fitting structure with a buried pin and a pin hole, a fitting structure with a concavo-convex shape formed on the joint end face, or a hinge buried between the joint end faces. der is, the in crest panel provided at both thick part, repairing method of tunnel in the side wall panel and being provided in the upper thick part. In tunnel repair method according to claim 1 or claim 2, the inter-ring stepped prevention mechanism, Ri fitting structure der by embedded pin and alignment pin holes, a central thick part in the top end panel And a thickened portion at both ends, the sidewall panel is provided at the upper and lower thickened portions, and the bottom plate panel is provided at a connecting portion between the bottom plate portion and the rising portion. . The centering pin hole has a taper narrowing toward the inside, and the embedded pin has a distal end shape that fits into the centering pin hole, and a base end portion is embedded in the panel. Item 4. The tunnel repair method according to item 3. The center thick part of the top end panel and the upper thick part of the side wall panel are provided with ceramic inserts with packing through which extrusion bolts for preventing panel deformation are passed, and the top end panel and the top end panel The tunnel repair method according to any one of claims 1 to 4, wherein deformation of the panel is prevented by adjusting the extrusion bolt penetrating the side wall panel. The bottom plate panel is composed of one panel whose lower surface is subjected to surface treatment with a nonwoven fabric, and a stainless steel insert for attaching a plate for preventing peeling from the backfill material is provided on the back surface. The tunnel repairing method according to any one of claims 1 to 5, wherein the tunnel is repaired. The said side wall panel and the said baseplate panel are joined via the height adjustment bolt attached to the lower end part of the lower thick part of the said side wall panel, It is any one of Claims 1-6 characterized by the above-mentioned. The tunnel repair method described. In the tunnel repairing method according to any one of claims 1 to 7 , pressing the arched panel against the installed arched panel using a drawing means for connecting and drawing the arched panels together. A unique tunnel repair method. 9. The tunnel repairing method according to claim 8 , wherein the pulling means has a long bolt and a nut for connecting the arched panels adjacent to each other in the tunnel axial direction, and is configured to be pulled by tightening the nut attached to the long bolt. A tunnel repair method characterized by Is disposed so as to cover the tunnel inner surface, a tunnel repair lining plate back-filling material is filled between the tunnel inner surface, by 4 dividing the precast concrete lining plate tunnel circumferential direction, the central The top end panel is composed of a thick top panel , both end portions are thick side wall panels, and a bottom plate panel having a rising portion integrally rising from the bottom plate along the tunnel inner surface. The side wall panels on both sides are connected to the panel via hinges so that they can swing open and close in the tunnel radial direction, and the joint end face in the thick part at both ends of the top end panel and the joint end face in the upper thick part of the side wall panel, A fitting structure with a buried pin and a pin hole, a fitting structure with a concavo-convex shape formed on the joint end face, or a step difference prevention mechanism between pieces by a hinge buried between the joint end faces is provided. , By the central thick part and both end thick part and the upper and lower thick portions and the bottom plate panel bottom plate portion and the rising portion embedded pin and alignment pin holes in the joining end face between the ring in the connection portion of the side wall panels of the top end panel A tunnel repair lining plate provided with a step prevention mechanism between rings. The tunnel repair lining plate according to claim 10 , wherein a sleeve for attaching the long bolt of the pulling means composed of a long bolt and a nut connecting the arched panels adjacent in the tunnel axial direction is attached to the hinge. Characteristic tunnel repair lining plate.

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