Rapid supporting structure for tunnel guide wall formwork and construction method

Abstract

The invention discloses a rapid supporting structure for a tunnel guide wall formwork and a construction method. The rapid supporting structure comprises a guide wall and a supporting system; a guidepipe is arranged in the guide wall, the inclination angle of the guide pipe is 1-3 degrees, and arch feet are arranged at the two ends of the guide wall; and the supporting system comprises a transverse supporting pipe and an oblique supporting pipe, and the two ends of the oblique supporting pipe are connected with the transverse supporting pipe and the guide wall respectively. According to the construction method, potential safety hazards in the installation process of a steel pipe bowl opening scaffold are avoided, equipment investment is reduced, the utilization rate of existing materialsis increased, the construction cost is saved, and the construction period is shortened; and the outstanding effects of high safety, high economy and high construction speed are achieved.

Description

technical field [0001] The invention belongs to the field of tunnel engineering in the railway industry, and is applied to the installation of formwork for a guide wall of a tunnel, and in particular relates to a structure and a construction method for installing and supporting a formwork for a guide wall of a tunnel. Background technique [0002] With the continuous development of my country's railway industry, the demand for railway construction continues to grow. The surrounding space of the railway tunnel is narrow, and the formwork bracket and support system are too small to store too much in the car yard. They need to be processed and installed in advance. Due to the limitation of the terrain of the tunnel entrance, how to quickly install the support on the guide wall formwork and improve the construction progress is Problems that need to be solved urgently. [0003] The conventional construction method adopts bowl buckle scaffolding for erection. Due to the narrow tu...

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Problems solved by technology

[0003] The conventional construction method adopts bowl buckle scaffolding for erection. Due to the narrow tunnel opening and effective construction space, the installation of scaffolding is not conducive to formwork support, which may easily cause formwork explosion, so it cannot be used.

[0004] Disadvantages of the conventional construction method: 1) The core soil is reserved in the ring direction of the tunnel to construct the guide wall. The installation of the steel pipe bowl support is limited by the site terrain, and the corresponding spacing cannot be arranged at equal intervals. The force on the bottom formwork of the guide wall is uneven, and uneven Uniform settlement, the construction quality of the guide wall cannot be guaranteed, which is not conducive to project quality control; 2) The steel pipe bowl scaffolding needs to be leased or purchased, and there are many vulnerable components, and the corresponding components are easy to be lost due to poor management, which increases the difficulty of management and increases the construction cost; 3 ) The connection of the steel pipe bowl scaffolding relies on fastener-type connections, and there is a lot of human interference. The stability of the bowl scaffolding during the construction process is not good, and it is prone to collapse and other unsafe hazards; Mutual interference, slow construction progress

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