Construction method of prefabricated steel cage for rapid tunnel lining
A construction method and reinforcement cage technology, which are applied in tunnel lining, shaft lining, tunnels, etc., can solve the problems of difficulty in dissipating dust and smoke, inefficient binding and welding of reinforcement cages, and endangering the health of on-site workers. Improve efficiency, improve efficiency
Active Publication Date: 2020-09-29
YELLOW RIVER ENG CONSULTING
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Problems solved by technology
At present, the reinforcement cage binding and welding of tunnel lining are mostly carried out in the tunnel. Due to the influence of space and lighting, the efficiency of reinforcement cage binding and welding is very low.
In addition, the dust and smoke generated during the binding and welding of a large number of steel bars are also difficult to dissipate in the cave, which seriously endangers the health of the on-site staff
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[0024] like Figure 1~Figure 3 As shown, the construction method of the assembled steel cage for tunnel rapid lining according to the present invention is carried out according to the following steps:
[0025] Step 1. According to the diameter of the tunnel excavation, the tunnel lining is designed to be a tunnel lining unit of 3 meters along the tunnel axis, so as to facilitate transportation and installation; each tunnel lining unit is designed as a bottom block divided along the ring direction , the left block, the right block and the top block are connected to form a ring structure;
[0026] Step 2, prefabricate the bottom block 1 outside the tunnel, bind the reinforcement cage 2 of the left block, the reinforcement cage 3 of the right block and the reinforcement cage 4 of the top block; The ends respectively extend out of their circumferential joint surfaces, and are used to overlap with the circumferentially stressed steel bars of the connected left and right side block...
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The invention discloses an assembled reinforcement cage construction method for fast lining of a tunnel. The method comprises the following steps of 1, according to the digging tunnel diameter of thetunnel, designing the tunnel lining to a state that one tunnel lining unit is arranged every 2 to 4m in the axial direction of the tunnel, and each tunnel lining unit is designed to a state that an bottom building block, a left side part building block, a right side part building block and a top building block are divided in an annular direction and are connected into a ring; 2, prefabricating thebottom building block outside the tunnel, and binding left and right side part building block reinforcement cages and a top building block reinforcement cage; 3, performing tunnel lining construction: laying the bottom building block of the first tunnel lining unit; 4, installing the left and right side part building block reinforcement cages at two sides of the bottom building block in an annular direction, and performing firm lap joint and welding on the annular stress steel bars; and 5, and performing firm lap joint and welding on annular stress steel bars of the top building block reinforcement cage and annular stress steel bars of the connected left and right side part building block reinforcement cages to form a ring. The method has the advantages that the binding and welding efficiency of the tunnel lining reinforcement cage can be effectively improved, and the work environment in the tunnel is improved.
Description
technical field [0001] The invention relates to a construction method for the cast-in-place concrete lining of a tunnel, in particular to a design method for an assembled reinforcement cage in the tunnel lining. Background technique [0002] The construction speed of the tunnel lining has a great influence on the progress and safety of the project, and the speed of the lining construction is often restricted by the binding of the steel cage in the tunnel. At present, the reinforcement cage binding and welding of tunnel lining are mostly carried out in the tunnel. Due to the influence of space and lighting, the efficiency of reinforcement cage binding and welding is very low. In addition, the dust and smoke generated during the binding and welding of a large number of steel bars are also difficult to dissipate in the cave, which seriously endangers the health of the on-site workers. Contents of the invention [0003] To achieve the above object, the present invention takes...
Claims
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IPC IPC(8): E21D11/14E21D11/10
CPCE21D11/10E21D11/105E21D11/14
Inventor 张金良曹国利王美斋董甲甲张钧睿吕小龙霍鹤飞蔡文勇
Owner YELLOW RIVER ENG CONSULTING
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