CN210530854U - Assembled steel reinforcement cage for rapid lining of tunnel - Google Patents

Assembled steel reinforcement cage for rapid lining of tunnel Download PDF

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Publication number
CN210530854U
CN210530854U CN201921707617.1U CN201921707617U CN210530854U CN 210530854 U CN210530854 U CN 210530854U CN 201921707617 U CN201921707617 U CN 201921707617U CN 210530854 U CN210530854 U CN 210530854U
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building block
tunnel lining
reinforced concrete
reinforcement cage
tunnel
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CN201921707617.1U
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张金良
曹国利
王美斋
董甲甲
张钧睿
吕小龙
霍鹤飞
蔡文勇
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Yellow River Engineering Consulting Co Ltd
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Yellow River Engineering Consulting Co Ltd
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Abstract

The utility model discloses an assembled steel reinforcement cage for rapid tunnel lining, which comprises a plurality of mutually-connected tunnel lining units, wherein the plurality of tunnel lining units have the same structure and consist of reinforced concrete bottom building blocks, left side building block steel reinforcement cages, right side building block steel reinforcement cages and top building block steel reinforcement cages which are connected in the circumferential direction; two ends of the circumferential stressed steel bar of the reinforced concrete bottom building block extend out of the radial joint surface; the reinforced concrete bottom building block is internally provided with a positioning device along the axial direction; the left and right side part building block steel reinforcement cages and the top part building block steel reinforcement cage are bound by annular stress steel reinforcements and structural stirrups; the structural stirrups are of U-shaped structures, and the openings of the structural stirrups of the U-shaped structures are arranged towards the direction of the next tunnel lining unit which is connected with the structural stirrups; the two ends of the circumferential stressed steel bar of the top building block steel bar cage extend out of the radial joint surface. The utility model discloses effectively promote tunnel lining cutting steel reinforcement cage ligature and welded efficiency, improved operational environment in the hole, compromise the traffic in the tunnel in the work progress simultaneously, the effectual construction interference that has reduced has improved whole tunnel lining cutting efficiency greatly.

Description

Assembled steel reinforcement cage for rapid lining of tunnel
Technical Field
The utility model relates to a tunnel cast in situ concrete lining especially relates to an assembled steel reinforcement cage that is used for quick lining cutting of tunnel.
Background
The construction speed of tunnel lining has great influence on the progress and safety of the project, and the construction speed of lining is limited by binding of a reinforcement cage in the tunnel. At present, the binding and welding of a reinforcement cage of a tunnel lining are mostly carried out in a tunnel, and the binding and welding efficiency of the reinforcement cage is very low due to the influence of space and illumination. In addition, dust and smoke generated in the process of binding and welding a large number of steel bars are difficult to dissipate in the holes, and the health of field workers is seriously endangered.
Disclosure of Invention
In order to achieve the above purpose, the utility model adopts the following technical proposal:
an object of the utility model is to provide an assembled steel reinforcement cage for quick lining cutting of tunnel.
The assembled reinforcement cage for rapid lining of tunnels comprises a plurality of mutually-linked tunnel lining units, wherein the tunnel lining units have the same structure and consist of reinforced concrete bottom building blocks, left side building block reinforcement cages, right side building block reinforcement cages and top building block reinforcement cages which are linked in the circumferential direction; the axial lengths of the reinforced concrete bottom building block, the left side building block reinforcement cage, the right side building block reinforcement cage and the top building block reinforcement cage are 2-4 m; the two ends of the annular stressed steel bar of the reinforced concrete bottom building block respectively extend out of the radial joint surfaces of the annular stressed steel bar and are used for being lapped with the annular stressed steel bars of the left and right side building block steel bar cages which are connected with each other, the annular joint surface of the reinforced concrete bottom building block is provided with a water stop groove for installing a water stop belt, and a positioning pin is arranged in the reinforced concrete bottom building block along the axial direction and is used for positioning between the reinforced concrete bottom building block and the next tunnel lining unit which is connected with each other; the left and right side part building block steel reinforcement cages and the top part building block steel reinforcement cage are bound by annular stress steel reinforcements and structural stirrups; the structural stirrup is of a U-shaped structure, and the opening of the structural stirrup of the U-shaped structure is arranged towards the direction of the next tunnel lining unit which is connected with the structural stirrup and is used for being lapped with the structural stirrup of the next tunnel lining unit which is connected with the structural stirrup; the two ends of the circumferential stressed steel bar of the top building block steel bar cage respectively extend out of the radial joint surfaces of the top building block steel bar cage and are used for being lapped with the circumferential stressed steel bars of the left and right side building block steel bar cages which are connected with each other.
When the diameter of the tunnel is more than 10 meters, the left side building block of the tunnel lining unit consists of a first left side building block and a second left side building block; the right side building block of tunnel lining unit comprises first right side building block and second right side building block.
The utility model discloses effectively promote tunnel lining cutting steel reinforcement cage ligature and welded efficiency, improved operational environment in the hole, compromise the traffic in the tunnel in the work progress simultaneously, the effectual construction interference that has reduced has improved whole tunnel lining cutting efficiency greatly.
Drawings
Figure 1 is the utility model discloses a tunnel lining unit's structural schematic diagram.
FIG. 2 is reinforced concrete bottom block hoop atress reinforcing bar and right side portion block steel reinforcement cage overlap joint sketch map.
Figure 3 is right side portion building block steel reinforcement cage and top steel reinforcement cage overlap joint sketch map.
Fig. 4 is a schematic view of the erection of formwork for placing concrete.
Figure 5 is the schematic view of the arc reinforced concrete base template of the present invention.
Fig. 6 is a schematic diagram of the left side standard template (or the right side standard template) according to the present invention.
Fig. 7 is a schematic view of the capping die plate of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1-3, the fabricated reinforcement cage for rapid lining of tunnels of the present invention comprises a plurality of tunnel lining units connected with each other, wherein the plurality of tunnel lining units have the same structure and are composed of a reinforced concrete bottom block 1, a left side block reinforcement cage 2, a right side block reinforcement cage 3 and a top block reinforcement cage 4 which are connected in the circumferential direction; the axial lengths of the reinforced concrete bottom building block 1, the left side building block reinforcement cage 2, the right side building block reinforcement cage 3 and the top building block reinforcement cage 4 are 3 meters; the two ends of the annular stress steel bar 5 of the reinforced concrete bottom building block 1 respectively extend out of the radial joint surfaces of the annular stress steel bar 5 and are used for being lapped with the annular stress steel bars 5 of the left and right side building block reinforcement cages 2 and 3 which are connected with each other, the annular joint surface of the reinforced concrete bottom building block 1 is provided with a water stop groove for installing a water stop belt, and a positioning pin is axially arranged in the reinforced concrete bottom building block 1 and is used for positioning with the next tunnel lining unit which is connected with each other; the left and right side block reinforcement cages 2 and 3 and the top block reinforcement cage 4 are bound by an annular stress reinforcement 5 and a structural stirrup 6; the structure stirrup 6 is of a U-shaped structure, and the opening of the structure stirrup 6 of the U-shaped structure is arranged towards the direction of the next tunnel lining unit which is connected with the opening and is used for being lapped with the structure stirrup of the next tunnel lining unit which is connected with the opening; the two ends of the circumferential stress steel bar 5 of the top building block steel bar cage 4 respectively extend out of the radial joint surface of the top building block steel bar cage and are used for being lapped with the circumferential stress steel bar 5 of the left and right side building block steel bar cages 2 and 3 which are connected with each other.
As shown in figures 4-7, the utility model is used for when tunnel lining construction, go on according to following step:
step 1, according to the diameter of a tunnel to be excavated, designing a tunnel lining into a tunnel lining unit along 3 meters of the axial direction of the tunnel, so as to be convenient for transportation and installation; each tunnel lining unit is designed into a ring structure formed by connecting reinforced concrete bottom building blocks, left side building blocks, right side building blocks and top building blocks which are segmented along the circumferential direction;
step 2, prefabricating a reinforced concrete bottom building block 1 outside the tunnel, and binding a left side building block reinforcement cage 2, a right side building block reinforcement cage 3 and a top building block reinforcement cage 4; the two ends of the annular stress steel bar 1.1 of the reinforced concrete bottom building block 1 extend out of the radial joint surface of the annular stress steel bar 1.1 respectively and are used for being in lap joint with the annular stress steel bars of the left and right side building block steel bar cages 2 and 3 which are connected with each other, the annular joint surface of the reinforced concrete bottom building block 1 is provided with a water stop tank for installing a water stop belt, and a positioning pin 1.2 is axially arranged in the reinforced concrete bottom building block 1 and is used for positioning the next tunnel lining unit which is connected with each other. The left and right side block reinforcement cages 2 and 3 and the top block reinforcement cage 4 are bound by an annular stress reinforcement 5 and a structural stirrup 6; the structural stirrup 6 is of a U-shaped structure, and the opening of the U-shaped structural stirrup 6 is arranged towards the direction of the next tunnel lining unit which is connected with the U-shaped structural stirrup and is used for being lapped with the structural stirrup of the next tunnel lining unit; the two ends of the annular stress steel bar 5 of the top building block steel bar cage 4 respectively extend out of the radial joint surface of the top building block steel bar cage and are used for being lapped with the annular stress steel bars 5 of the left and right side building block steel bar cages 2 and 3 which are connected with each other;
step 3, tunnel lining construction: firstly, laying a reinforced concrete bottom building block 1 of a first tunnel lining unit, wherein the reinforced concrete bottom building block plays a role of supporting a left building block reinforcement cage 2 and a right building block reinforcement cage 3 on one hand, and is used as a traffic foundation for equipment transportation in the tunnel on the other hand;
step 4, mounting left and right lateral building block reinforcement cages 2 and 3 on two circumferential sides of the laid reinforced concrete bottom building block 1, overlapping a circumferential stress reinforcement 1.1 of the reinforced concrete bottom building block 1 with circumferential stress reinforcements 6 of the left and right lateral building block reinforcement cages 2 and 3 which are connected with each other, and firmly connecting the left and right lateral building block reinforcement cages by binding or welding;
step 5, the top block reinforcement cage 4 is installed to the top of the tunnel in a pushing and lifting manner, the annular stress reinforcement 5 of the top block reinforcement cage 4 is overlapped with the annular stress reinforcements 5 of the left and right side block reinforcement cages 2 and 3 which are connected with each other, and the top block reinforcement cage 4, the left side block reinforcement cage 2, the right side block reinforcement cage 3 and the reinforced concrete bottom block 1 of the first tunnel lining unit are fixedly connected into a ring through a binding or welding manner, as shown in fig. 1;
step 6, erecting a template, and pouring concrete to complete the integral lining structure of the first tunnel lining unit;
7, repeating the steps 3 to 6 to complete the integral lining structure of the second tunnel lining unit; before the template is erected in the step 6, the left and right side part building block steel reinforcement cages 2 and 3 and the structural stirrups 6 of the top building block steel reinforcement cage 4 of the first tunnel lining unit are correspondingly lapped and welded or firmly bound with the structural stirrups of the left and right side part building block steel reinforcement cages and the top building block steel reinforcement cage of the second tunnel lining unit, and then the template is erected and concrete is poured;
and 8, repeating the step 7 to finish the integral lining construction of the whole tunnel.
As shown in fig. 4-7, the formwork consists of an arc reinforced concrete base formwork 7, a left side standard formwork 8, a right side standard formwork 9 and a capping formwork 10; the length of the arc reinforced concrete base template 7, the left side standard template 8, the right side standard template 9 and the capping template 10 along the axial direction is 3 meters; be provided with the traffic platform 7.1 that is used for laying the track on the intrados of arc reinforced concrete base template 7, left side portion standard form 8, right side portion standard form 9 and capping template 10 are steel framework structure, promptly: the steel plate is composed of an arc-shaped steel plate 11 and longitudinal and transverse rib plates 12 welded on the inner arc surface of the arc-shaped steel plate 11 and used for improving the strength; the arc reinforced concrete base template 7 and the left and right side standard templates 8 and 9 as well as the left and right side standard templates 8 and 9 and the capping template 10 are respectively connected through high-strength bolts 13.
When erecting the template, laying the arc reinforced concrete base template 7 on the reinforced concrete bottom building block 1, and laying a traffic platform 7.1 on the inner arc surface according to traffic needs; then, taking the arc reinforced concrete base template 7 as a support, arranging the left and right side standard templates 8 and 9 at two sides of the arc reinforced concrete base template 7, and connecting through high-strength bolts 13; and finally, the capping template 10 is pushed to the mounting position of the top of the tunnel and is connected with the left and right side standard templates 8 and 9 through high-strength bolts 13, so that a unit template ring is formed, as shown in fig. 4.
In addition, when the diameter of the tunnel is >10 meters, the left side block of the tunnel lining unit may be taken to consist of a first left side block and a second left side block; the right side block of the tunnel lining unit may also be comprised of a first right side block and a second right side block.

Claims (2)

1. The utility model provides an assembled steel reinforcement cage for quick lining cutting of tunnel, its characterized in that: the tunnel lining unit comprises a plurality of mutually-connected tunnel lining units, wherein the tunnel lining units have the same structure and consist of reinforced concrete bottom building blocks, left side building block reinforcement cages, right side building block reinforcement cages and top building block reinforcement cages which are connected in the circumferential direction; the axial lengths of the reinforced concrete bottom building block, the left side building block reinforcement cage, the right side building block reinforcement cage and the top building block reinforcement cage are 2-4 m; the two ends of the annular stressed steel bar of the reinforced concrete bottom building block respectively extend out of the radial joint surfaces of the annular stressed steel bar and are used for being lapped with the annular stressed steel bars of the left and right side building block steel bar cages which are connected with each other, the annular joint surface of the reinforced concrete bottom building block is provided with a water stop groove for installing a water stop belt, and a positioning pin is arranged in the reinforced concrete bottom building block along the axial direction and is used for positioning between the reinforced concrete bottom building block and the next tunnel lining unit which is connected with each other; the left and right side part building block steel reinforcement cages and the top part building block steel reinforcement cage are bound by annular stress steel reinforcements and structural stirrups; the structural stirrup is of a U-shaped structure, and the opening of the structural stirrup of the U-shaped structure is arranged towards the direction of the next tunnel lining unit which is connected with the structural stirrup and is used for being lapped with the structural stirrup of the next tunnel lining unit which is connected with the structural stirrup; the two ends of the circumferential stressed steel bar of the top building block steel bar cage respectively extend out of the radial joint surfaces of the top building block steel bar cage and are used for being lapped with the circumferential stressed steel bars of the left and right side building block steel bar cages which are connected with each other.
2. The fabricated reinforcement cage for rapid tunnel lining of claim 1, wherein: when the diameter of the tunnel is more than 10 meters, the left side building block of the tunnel lining unit consists of a first left side building block and a second left side building block; the right side building block of tunnel lining unit comprises first right side building block and second right side building block.
CN201921707617.1U 2019-10-12 2019-10-12 Assembled steel reinforcement cage for rapid lining of tunnel Active CN210530854U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921707617.1U CN210530854U (en) 2019-10-12 2019-10-12 Assembled steel reinforcement cage for rapid lining of tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921707617.1U CN210530854U (en) 2019-10-12 2019-10-12 Assembled steel reinforcement cage for rapid lining of tunnel

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Publication Number Publication Date
CN210530854U true CN210530854U (en) 2020-05-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112282794A (en) * 2020-10-20 2021-01-29 贵州建工集团第一建筑工程有限责任公司 Tunnel lining construction process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112282794A (en) * 2020-10-20 2021-01-29 贵州建工集团第一建筑工程有限责任公司 Tunnel lining construction process
CN112282794B (en) * 2020-10-20 2022-11-08 贵州建工集团第一建筑工程有限责任公司 Tunnel lining construction process

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