Urban portal tunnel fabricated lining and urban portal tunnel lining construction method
A gate-shaped, prefabricated technology, applied in tunnel linings, shaft linings, tunnels, etc., can solve the problems of limited construction work surface, endangering the health of on-site workers, slow dissipation of smoke and harmful gases, etc. Health effects, simple and efficient assembly process, simple and efficient construction process
Pending Publication Date: 2020-07-24
YELLOW RIVER ENG CONSULTING
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Problems solved by technology
At present, the binding and welding of steel mesh for tunnel lining is carried out in the tunnel. Due to the narrow space in the tunnel and the limited construction work area, the binding efficiency of steel mesh is extremely low; welding is required during the binding of steel mesh, and welding produces The smog, dust and harmful gas dissipate slowly in the tunnel, which will seriously endanger the health of on-site workers; in addition, the steel formwork trolley needs to wait for the concrete to reach the strength of formwork removal before pouring the next section, and the formwork utilization rate is low
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[0036] One of the cores of the present invention is to provide a prefabricated lining of a city gate tunnel, so as to effectively improve the construction efficiency of the tunnel lining and reduce the impact on the health of construction workers during the construction process.
[0037] Another core of the present invention is to provide a lining construction method for a city gate tunnel.
[0038] Please refer to Figure 1 to Figure 5 , an assembled lining of a city gate tunnel disclosed in an embodiment, the lining includes at least one lining unit whose shape is adapted to the city gate tunnel, and the lining unit is formed by assembling a plurality of prefabricated reinforced concrete segments.
[0039] Before the actual prefabrication of the lining, it is necessary to design the lining into a lining unit of 2 to 4 meters along the axial direction of the city gate tunnel according to the design and excavation size of the city gate tunnel, as well as the convenience of man...
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The invention relates to an urban portal tunnel fabricated lining which comprises at least one lining unit matched with an urban portal tunnel in shape. Each lining unit is formed by assembling a plurality of prefabricated reinforced concrete pipe pieces. The urban portal tunnel fabricated lining is formed in the mode that the reinforced concrete pipe pieces are prefabricated outside a portal andthen assembled in the portal, binding and welding of reinforcing mesh pieces inside the portal are not needed, the assembling process is simple and efficient, the construction efficiency can be effectively improved, and the influence on the health of constructors in the construction process is effectively reduced. The invention further relates to a urban portal tunnel lining construction method.
Description
technical field [0001] The invention relates to the technical field of water conservancy project construction, in particular to an assembled lining of a city gate tunnel and a construction method for the lining of a city gate tunnel. Background technique [0002] The city gate tunnel is a relatively common type of hydraulic tunnel. The construction speed of the tunnel lining has a great influence on the progress and safety of the project. At present, the tunnel lining is usually formed by cast-in-place. The specific steps are: first bind the steel mesh near the inner wall of the tunnel, and then move the steel formwork trolley to the Predetermine the position to support the steel mesh, and then pour concrete to the position of the steel mesh. After the concrete reaches the strength of the formwork removal, the steel formwork trolley can be removed to proceed to the next section of pouring. [0003] The most important factor restricting the construction speed of the lining i...
Claims
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IPC IPC(8): E21D9/14E21D11/08E21D11/10
CPCE21D9/14E21D11/08E21D11/083E21D11/10
Inventor 张金良曹国利王美斋吕小龙田丰陈丹
Owner YELLOW RIVER ENG CONSULTING