JP2019199725A - Assembly method of arch center supporting device and connection member - Google Patents

Abstract

To provide an assembly method of an arch center supporting device and connection members to reduce the number of assembly assist members assisting assembly of the arch center supporting device.SOLUTION: An assembly method of an arch center supporting device comprises a step of assembling an arch center supporting device 12 to support an arch center for covering a tunnel. When assembling, assembly assist members composed of components forming the arch center supporting device 12 assist the assembly of the arch center supporting device 12. After assembling the arch center supporting device 12 and disassembling the assembly assist members, the central supporting device is assembled using assembly assist members.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for assembling a supporting device for a mold for molding centle, that is, tunnel lining concrete, and a connecting member used in the assembling method.

For example, Patent Document 1 discloses a centle support device configured to support a centle for forming tunnel lining concrete.
When a centle is constructed using this type of centle support device and the tunnel lining concrete is formed by the centle, a front dome-shaped centle is supported on the centle support device. Then, concrete is placed between the outer peripheral surface of the centle and the inner wall surface of the tunnel, and tunnel lining concrete is formed.

By the way, the conventional general assembling method of the centle support device is executed by the following procedure, for example.
That is, as shown in FIG. 17, the legs 204 are placed on the traveling device 29 on the pair of left and right rails 203 inside or outside the tunnel. And the pipe material 206 is stood up like a support bar between the leg material 204 and the ground 205 so that the leg material 204 may not fall down. The pipe member 206 is connected to the leg member 204 using a clamp fitting. Another pipe material 207 is stretched between the lower portions of the pipe material 206, and the intersecting portions of the vertical and horizontal pipe materials 206, 207 are bound by a binding material such as a clamp fitting or a band.

  Thereafter, a beam member 208 is installed between the upper ends of the leg members 204. In this way, the front gate-shaped main body 209 of the Centre support device is constructed. Thereafter, the pipe members 206 and 207 are removed, and the sleepers 210 and the like that support the traveling device 29 are removed.

  When the centle support device is outside the tunnel, the centle support device is moved along the rail 203 into the tunnel. In addition, various parts and equipment are mounted on the main body 209, and finally, the centle is supported on the centle support device in the tunnel.

  In the conventional general assembling method described above, the leg member 204 is supported in an upright state by a pipe member 206 or the like leaning against the ground 205 at an angle. Therefore, there is a possibility that the pipe material 206 slides on the ground 205 or the binding between the pipe materials 206 and 207 is removed, so that the stability of the leg material 204 in the upright state is poor, and various types of installation such as installation of the beam material 208 are performed. There are difficulties in performing work efficiently.

In addition, since the disassembly of the centle support device is executed in the reverse order to the assembly, the above-described problems occur as in the assembly.
In order to solve these problems, a method for assembling the centle support device disclosed in Patent Document 1 has been proposed. In the assembling method described in Patent Document 1, an assembly auxiliary member such as H-shaped steel is installed between the leg members 204 on both sides of the main body 209 without using the pipe members 206 and 207. It is designed to avoid falls. For this reason, installation of a beam material etc. can be performed stably.

JP 2017-166631 A

  If the technology of Patent Document 1 is used, the center support device can be constructed in a stable state. However, in addition to the center support device, an assembly support member installed between the legs 204 is required. It was necessary to transport to the tunnel construction site together with the components of the support device. And since the said assembly auxiliary member is large sized and heavy, it is necessary to procure a large truck for the conveyance. At the construction site, handling of large and heavy assembly aids takes time.

  An object of the present invention is to reduce the number of members required for assembling a centle support device.

  In order to achieve the above object, in the method for assembling the centle support device of the present invention, an assembly auxiliary member is constituted by the constituent members of the centle support device, and the centle support device is assembled using the assembly auxiliary member. It is characterized by assisting.

  Therefore, in the present invention, since the constituent members of the centle support device are used in assisting the assembly of the centle support device, the number of assembly auxiliaries can be reduced, and the burden of transportation and management can be reduced.

  The connecting member of the present invention is a connecting member connected between a tunnel lining centle and a main body of a centle support device for supporting the tunnel lining centle. It is characterized by comprising a jack that is made possible and an extension pipe that can be externally fitted to the jack.

  Therefore, in the present invention, by using the extension pipe, it is possible to sufficiently secure the connection length of the connection device even if the jack is short.

  According to the present invention, there is an effect that the number of assembly auxiliary members can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It shows 1st Embodiment, Comprising: (a) is a side view which shows the installation state of the centle for concrete lining, and a centle support apparatus, (b) is a front view similarly. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates a first embodiment, in which (a) is a side view showing an installation state of a traveling device in a centle support device, and (b) is a front view of the same. BRIEF DESCRIPTION OF THE DRAWINGS It shows 1st Embodiment, Comprising: (a) is a side view which shows the installation state of the construction member and leg material in a centle support apparatus, (b) is a front view similarly. BRIEF DESCRIPTION OF THE DRAWINGS It is 1st Embodiment, Comprising: (a) is a side view which shows the assembly | attachment state of the connection member in a centle support apparatus, (b) is a front view similarly. BRIEF DESCRIPTION OF THE DRAWINGS It is 1st Embodiment, Comprising: (a) is a side view which shows the assembly | attachment state of the beam material in a centle support apparatus, (b) is a front view similarly. 1A and 1B show a first embodiment, in which FIG. 1A is a side view showing a state in which a linking member and a connecting member in a centle support device are removed, and FIG. The partially broken side view of a connection member. The partially broken side view which looked at the connection member of FIG. 7 from another angle. Sectional drawing which shows the use condition of a clamp metal fitting. The partially broken side view which shows the expansion | deployment state of a clamp metal fitting. The front view which shows 2nd Embodiment and shows a centle and a centle support apparatus. The 2nd Embodiment is shown, Comprising: (a) is a side view which shows the installation state of a beam material and a lower leg material, (b) is a front view similarly. The 2nd Embodiment is shown, Comprising: (a) is a side view which shows the temporary placement state of an upper leg, (b) is a front view. The 2nd Embodiment is shown, Comprising: (a) is a side view which shows the installation state of an upper leg, (b) is a front view. The 2nd Embodiment is shown, Comprising: (a) is a side view which shows the state which installed some beam materials on the upper leg material, (b) is a front view. The 2nd Embodiment is shown, Comprising: (a) is a side view which shows the state which removed the assembly | attachment auxiliary member, (b) is a front view. The front view which shows the conventional method.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings of FIGS.
First, in FIG. 1A and FIG. 1B, the structure of a concrete lining centle (hereinafter simply referred to as a centle) 11 and a centle support device 12 which are concrete molds will be described. The center support device 12 is for receiving the load of the concrete 200 and the center 11 placed along the inner wall surface of the tunnel 201.

  That is, as shown in FIG. 1A and FIG. 1B, the centle 11 includes a top form 13, a pair of side forms 14 connected to both sides of the top form 13, and the side forms 14. A pair of invert forms 15 connected to the lower side is provided. Form units composed of these foams 13 to 15 are arranged in the extending direction of the tunnel 201. The concrete 200 is filled between the centle 11 and the inner wall surface of the tunnel 201.

  The centle support device 12 is placed on a rail 203 laid between the inside and the outside of the tunnel 201. The centle support device 12 includes a device main body 21 having a gate shape, and a receiving material unit 23 mounted on the upper surface of the beam member 22 at the upper end of the device main body 21. Further, the centle support device 12 includes a support unit 25 used as an assembly auxiliary member connected to the leg portion 24 of the device main body 21. And the said receiving material unit 23 is connected with the lower surface of the said top form 13, and supports the top form 13 from the downward direction. A support unit 25 is connected to the inner surface of the invert form 15 to support the invert form 15.

  The pair of left and right legs 24 of the apparatus main body 21 includes a traveling device 29 provided with wheels 28 that travel on the rail 203, and a lower leg member 30 connected to the traveling device 29 and used as an assembly assisting member. And an upper leg 31 connected to the lower leg 30 by a fastening member 36 made of a bolt and a nut. The receiving material unit 23 includes an outer vertical member 32 connected to the lower surface of the top form 13 via a fastening member 36, and a pair of left and right outer horizontal members 33 connected to the lower end of the outer vertical member 32. ing. Furthermore, the receiving material unit 23 is connected between the outer cross members 33 by a fastening member 36 and is connected to the inner cross member 34 used as an assembly auxiliary member and the lower surface of the top form 13, and the inner cross member 34. And an inner longitudinal member 35 placed on the upper surface of the inner member. The outer cross member 33 is connected to the lower surface of the top form 13. The load from the top form 13 is received by the beam member 22 through the outer longitudinal member 32, the outer transverse member 33, the inner transverse member 34 and the inner longitudinal member 35.

The support unit 25 as an assembly auxiliary member will be described.
As shown in FIGS. 7-10, the support unit 25 is comprised by the support material 102 and the clamp metal fitting 103 as a centering means.

  The support member 102 includes a jack 104 that can be expanded and contracted by the action of a screw. In the jack 104, a first screw rod 106 is screwed onto an internal female screw at one end of a screw cylinder 105. A second threaded rod 107 is screwed onto the inner peripheral female thread at the other end of the screw cylinder 105. Mounting holes 108 and 109 for the fastening member 36 are formed in the metal fitting fixed to the ends of the first screw rod 106 and the second screw rod 107. A handle 110 is attached to the outer periphery of the screw cylinder 105.

  An extension pipe 111 as an extension member constituting the support member 102 is externally fitted and connected to the screw cylinder 105, and a mounting hole 112 for the fastening member 36 is formed in a metal fitting at one end thereof. ing. Through holes 113 are formed at a plurality of positions in the length direction of the screw cylinder 105 at intervals of 180 degrees, and ring-shaped washers 114 are fixed to the inner edges of the through holes 113. At the end of the extension pipe 111 opposite to the mounting hole 112, three window holes 115 are provided at equal intervals in the circumferential direction, and a rib piece is provided on the outer periphery at a position between the window holes 115. 116 is fixed.

  A bolt 117 is inserted between a pair of washers 114 facing each other at an interval of 180 degrees, and the bolt 117 is inserted through the mounting hole 108 of the first screw rod 106. Then, the nut 129 is screwed onto the tip of the bolt 117 and fastened to the washer 114, whereby the positional relationship in the length direction between the first screw rod 106 and the extension pipe 111 is defined. Therefore, the length of the support member 102, that is, the support unit 25 can be adjusted by selecting the washer 114 through which the bolt 117 is inserted. In the extension pipe 111, a spacer 130 as a centering means is attached to the bolt 117, and the one end side of the first screw rod 106 and the extension pipe 111 are centered by the spacer 130.

  As shown in FIGS. 9 and 10, the support unit 25 is attached to the outer periphery of the extension pipe 111 to align the end of the first screw rod 106 opposite to the spacer 130 and the extension pipe 111. A clamp fitting 103 is provided as a centering means for performing the above. The clamp fitting 103 has three arcuate first to third links 118 to 120, and the first and third links 120 are connected to both ends of the second link 119 by shafts 123. A pair of rollers 122 that are in contact with the outer peripheral surface of the screw cylinder 105 through the window holes 115 are rotatably supported at the center of each of the links 118 to 120. A screw 124 is attached to the tip of the first link 118 by a shaft 123, a nut 125 is screwed onto the outer periphery of the screw 124, and a pressure contact surface 126 is formed on the end surface of the nut 125. A bifurcated portion 127 is formed at the end of the third link 120, and a pressure contact portion 128 is formed at the edge thereof.

  When the clamp fitting 103 is closed from the unfolded state, the outer periphery of the end of the screw cylinder 105 is clamped by the roller 122 at the position of the window hole 115 in a state where the rotation of the screw cylinder 105 is allowed. And the extension pipe 111 are aligned. In this clamped state, with the screw 124 sandwiched in the bifurcated portion 127, the pressure fitting surface 126 of the nut 125 is brought into pressure contact with the pressure-contacted portion 128 of the bifurcated portion 127 by the action of the screw. Is held in a clamped state. In this state, since the rib piece 116 is located at the inner corner between the links 118 to 120, the rotation of the clamp fitting 103 is restricted.

  Next, a method for assembling the center support device 12 and the center 11 will be described. This assembly is performed outside or inside the tunnel 201, and when assembled outside the tunnel 201, the centle support device 12 and the centle 11 are moved on the rail 203 to reach the tunnel 201.

  First, as shown in FIGS. 2A and 2B, the traveling device 29 is placed on the wheels 28 on the lap side and the wife side on the left and right rails 203. Accordingly, there are a total of four traveling devices 29. These traveling devices 29 are maintained in a stable state by the jack 26. 2A is the lap side of the tunnel 201 and the right side is the wife side of the tunnel 201.

  Next, as shown in FIG. 3A and FIG. 3B, the lower leg member 30 is placed on each traveling device 29 and fixed by the fastening member 36. Reference numeral 39 denotes a support jack for supporting the lower leg member 30 in an auxiliary manner, and 40 denotes an auxiliary receiving plate that is attached to the lower leg member 30 and receives the lower surface of the upper leg member 31 described later.

  Thereafter, as shown in FIG. 3A and FIG. 3B, a construction member 41 constituting an assembly auxiliary member is interposed between the traveling devices 29 of the lower leg members 30 in the left and right leg portions 24. One erection member 41 is attached to one lower leg member 30 that is not used as the leg portion 24, an inner cross member 34 that is not used as the receiving member unit 23, and the centle support device 12 that is completed. Includes an adapter 42 and an adjustment member 43 that are not used. Then, one end surface of the lower leg member 30 of the erection member 41 is laterally fixed to the side surface of the lower leg member 30 on the traveling device 29 by the fastening member 36, and the adapter 42 is fastened to the other end surface of the lateral lower leg member 30. It is fixed by the member 36. One end surface of the adjustment member 43 is fixed to the side surface of the lower leg member 30 on the other traveling device 29 by the fastening member 36, and the inner cross member 34 is interposed between the adjustment member 43 and the adapter 42, It is fixed by the binding member 36. Depending on the distance between the left and right leg portions 24, the adapter 42 may not be used or may be used in a plural number.

  The adjustment member 43 includes adjustment pieces 45 and 46 that adjust the length by moving the adjustment member 43 as a whole by approaching and separating in the extending direction of the long hole 44, and adjusting the pieces 45 and 46 at a required length. Is fixed by the fastening member 36. A jack 47 is interposed between the center of the erection member 41 in the length direction and the ground 205.

  Thereafter, as shown in FIG. 4A and FIG. 4B, an upper leg 31 made of a truss material is installed between the upper ends of the lower leg 30 on the lap side and the wife side on the left and right leg parts 24 side. Then, it is placed on the lower leg member 30 and fixed by the fastening member 36. In this way, the left and right legs 24 of the main body 21 of the center support device 12 are configured.

  Next, the support unit 25 having the extension pipe 111 is interposed between the bracket 38 fixed to the upper leg member 31 and the bracket 38 fixed to the upper surface of the inner cross member 34 using the fastening member 36. The The support unit 25 supports the leg portion 24 so as to maintain its posture in an upright state. In this state, another lower leg member 30 is fixed to the lower surfaces of the left and right upper leg members 31 between the lap-side and wife-side traveling devices 29 by the fastening members 36. In the present embodiment, the number of the lower leg members 30 on the lower surface of the left and right upper leg members 31 between the lap side and the wife side traveling devices 29 is originally two, but at this stage, only one on each of the left and right sides. Fixed. Therefore, as shown by a two-dot chain line in FIG. 4A, the left and right upper leg members 31 each have one unattached portion where the lower leg member 30 is not assembled.

  Next, as shown in FIGS. 5A and 5B, the beam member 22 is placed between the upper ends of the left and right leg portions 24 at an interval, and the fastening member 36 is placed. It is fixed by. At this stage, the centle support device 12 has a gate shape as a whole and is in a stable state.

  Then, as shown in FIGS. 6A and 6B, the erection member 41 is removed. Thereafter, the erection member 41 is disassembled, and the lower leg member 30 used for the erection member 41 is assembled to the unmounted portion by the fastening member 36. And the jack 100 for receiving a load is attached to the lower end of each lower leg member 30 between the traveling devices 29 so as to be interposed between the ground 205 when the concrete 200 is placed. Further, as shown in FIG. 1B, the inner cross member 34 constituting the erection member 41 is used as a constituent member of the receiving member unit 23 on the upper surface of the beam member 22.

  Further, the support unit 25 used for holding the leg portion 24 upright is removed and interposed between the leg portion 24 and the invert form 15 using a fastening member 36. Here, the distance between the leg portion 24 and the invert form 15 varies depending on the size of the tunnel 201 and the apparatus main body 21. For this reason, the length of the support unit 25 is adjusted according to the fluctuation distance. In this case, the support unit 25 has an overall length by selecting the washer 114 through which the bolt 117 is inserted, the degree of screwing of the first and second screw rods 106 and 107 with respect to the screw tube 105, the length of the jack 26, and the like. Adjusted. If the length is short, the extension pipe 111 is removed and only the jack 104 is used.

Thereafter, various parts and equipment are mounted on the center support device 12, and the assembly of the center support device 12 is completed.
The dismantling of the centle support device 12 after the hardening of the tunnel lining concrete 200 is performed in a work process in reverse order to the work process described above.

The first embodiment has the following effects.
(1) In the pre-process of assembling the centle support device 12 and the centle 11, the lower leg member 30 and the support unit 25 required in the post-process are used as an assembly auxiliary member. And the structure for that need only consider the position of the hole for the bolt insertion of the fastening member 36, or provide the bracket 38. FIG. Therefore, the number and types of members for assisting assembly can be reduced. In the present embodiment, only the adapter 42 and the adjustment member 43 may be prepared as dedicated members for assisting assembly. For this reason, the burden of conveyance and storage of the member used for the assembly of the centle support device 12 can be reduced.

  (2) Unlike the conventional case, the leg portion 24 of the apparatus main body 21 can be held in an upright state without using the pipe members 207, 207, so that the leg portion 24 can be appropriately prevented from falling and work efficiency can be improved. .

  (3) Since the extension pipe 111 is detachably provided on the support unit 25, a sufficient adjustment width of the length of the support unit 25 can be secured. In addition, by providing a plurality of mounting holes 112 for the washers 114 along the length of the extension pipe 111, the length can be adjusted in small steps by selecting the washers 114 through which the bolts 117 are passed. Can do. If a function for adjusting the length of the jack 104 using the action of a screw is added to this, a stepless adjustment over a wide range becomes possible. For this reason, the length of the support unit 25 can be easily adapted to the size of the tunnel 201.

  (4) By providing the support unit 25 with the clamp fitting 103 and the spacer 130 for aligning the axial centers of the jack 104 and the extension pipe 111, the center gap between the jack 104 and the extension pipe 111 and the bending between the two. Can be suppressed. For this reason, the support of the apparatus main body 21 and the connection between the leg portion 24 and the invert form 15 can be performed appropriately without difficulty.

(Second Embodiment)
Next, a second embodiment embodying the present invention will be described with reference to the drawings of FIGS. In the second embodiment, as shown in FIG. 11, the outer cross member 33 and the inner cross member 34 are not provided in the receiving material unit 23, and the first cross section is used to hold the leg portion 24 in an upright state. A gantry 51 is configured instead of the erection member 41 of the embodiment. And the beam material 22 is used as a structural member of the mount frame 51. In the second embodiment, an electric jack 48 is provided on the traveling device 29.

  That is, as shown in FIG. 12A and FIG. 12B, a pair of beam members 22 are installed on the left and right rails 203 between the lap-side and wife-side travel devices 29, The rail 203 is fixed with a fixing bracket (not shown). Next, the lower leg member 30 is placed on the upper surfaces of both ends of the beam member 22 laid on the rail 203 via the adapter 37 and fixed by the fastening member 36, and the beam member is positioned at a position between the lower leg members 30. A pair of beam members 22 are placed between intermediate portions 22 in the length direction and fixed by a fastening member 36. A bracket 38 is fixed to the beam member 22 in advance. In this way, the gantry 51 of the present embodiment is configured.

  Next, as shown in FIG. 13A and FIG. 13B, the upper leg 31 is temporarily placed on the lower beam member 22 between the lower leg member 30 and the upper beam member 22. The fixing member 36 is temporarily fixed.

  Then, as shown in FIGS. 14A and 14B, the upper leg 31 is transferred to the upper surface of the beam member 22 between the traveling devices 29, placed, and fixed by the fastening member 36. . Further, the upper leg member 31 and the upper beam member 22 are connected by the support unit 25, and the upper leg member 31 is supported in an upright state. In this way, the leg portion 24 of the apparatus main body 21 is supported by the mount 51 from below.

  Next, as shown in FIG. 15A and FIG. 15B, the electric jack 48 is raised and both ends of the upper leg 31 are supported by the electric jack 48. Then, a pair of beam members 22 are installed between both ends of the upper surface of the upper leg member 31 and fixed by the fastening member 36. If it does in this way, the apparatus main body 21 will exhibit a gate shape, and will be in a stable state.

  Therefore, as shown in FIGS. 16A and 16B, the support unit 25 is removed. Further, the gantry 51 is disassembled, the beam member 22 is removed, and the beam member 22 is installed between the upper portions of the upper leg members 31.

The subsequent method is almost the same as that of the first embodiment. The effect of the second embodiment is almost the same as that of the first embodiment.
(Example of change)
The present invention is not limited to the first and second embodiments, and may be embodied in the following manner.

Use a member other than the member used in the first and second embodiments as an assembly auxiliary member. For example, the outer vertical member 32 and the inner vertical member 35 are used.
-Use only the adjustment member 43 without using the adapter 42 in the erection member 41.

  In the second embodiment, only the beam member 22 installed on the rail 203 is used as the gantry 51, and another beam member 22 on the beam member 22 is omitted. In this case, a bracket 38 for connecting the support unit 25 to the beam member 22 constructed on the rail 203 is provided.

(Other technical ideas)
The technical ideas other than the claims are as follows, as grasped from the first and second embodiments and the modified examples.

  (A) Assembling the centle support device using the assembly assisting member, then disassembling the assembly assisting member, assembling the centle support device using the disassembled assembly assisting member, and the centle for tunnel lining The method for assembling a centle support device for tunnel lining according to claim 1.

(B) The assembly method of the centle support device for tunnel lining according to claim 5, wherein the assembly auxiliary member has a jack that can be expanded and contracted.
(C) The assembling auxiliary member is a method for assembling a centle support device for tunnel lining as described in the section (B), in which an extension member for extending the length thereof is detachably provided.

  DESCRIPTION OF SYMBOLS 11 ... Centle, 12 ... Centle support apparatus, 21 ... Apparatus main body, 22 ... Beam material, 23 ... Receiving unit, 24 ... Leg part, 30 ... Lower leg member, 34 ... Inner cross member, 36 ... Tightening member, 101 ... Support unit 104 ... jack, 13 ... clamp fitting, 111 ... extension pipe.

Claims (8)

In the assembling method of the centle support device for supporting the tunnel lining centle,
A method of assembling a centle support device for tunnel lining, wherein an assembly assisting member is constituted by the constituent members of the centle support device, and the assembly assisting member is used to assist the assembly of the centle support device.   2. The tunnel lining device according to claim 1, wherein the centle support device is assembled using the assembly assisting member, and then the assembly assisting member is disassembled and the centle support device is assembled using the disassembled assembly assisting member. Assembling method of the center support device.   The method of assembling a centle support device for tunnel lining according to claim 1, wherein the assembly assisting member is installed between legs on both sides of the main body of the centle support device.     The method of assembling a centle support device for tunnel lining according to claim 1, wherein the assembly auxiliary member supports a leg portion of a main body of the centle support device in a mounted state.   The centle support for tunnel lining according to any one of claims 1 to 4, wherein the assembly auxiliary member is interposed between a main body of a centle support device and the centle for tunnel lining. Device assembly method.   The said assembly auxiliary member is a member which comprises the main body of a centre support apparatus, The assembly method of the centle support apparatus for tunnel linings as described in any one of Claims 1-3. A connecting member that is connected to the centle for tunnel lining and the main body of the centle support device for supporting the centle for tunnel lining,
A jack that can be expanded and contracted by the action of a screw;
A connecting member including an extension pipe that can be connected to the jack.   The connecting member according to claim 7, further comprising centering means for centering the jack and the extension pipe.