Tunnel arch foot connecting plate positioning tool and steel arch construction method

Abstract

The invention discloses a tunnel arch foot connecting plate positioning tool and a steel arch construction method. The tunnel arch foot connecting plate positioning tool comprises two or more box bodies, each box body comprises a positioning plate and a cover body, a cavity for containing a connecting plate is formed in the positioning plate, limiting holes corresponding to connecting holes in the connecting plate are formed in the bottom of the positioning plate, a fracture groove is formed in the middle of the cover body, the cover body covers the positioning plates and shields the connecting holes in the connecting plates, and a limiting piece is connected between every two adjacent positioning plates. When the tool is used for construction, firstly, the positioning plates are fixedly installed at the preassembling positions, corresponding to the steel arches, on the two sides, then the connecting plates are fixedly installed on the positioning plates, the limiting pieces are installed between every two adjacent positioning plates and adjusted, the steel arches at the positions, corresponding to arch feet, on the two sides are spliced through the steel arches of the preset size, after the steel arch is fixed, the cover body is installed on the positioning plate, concrete is sprayed, and after the concrete is solidified, the cover body, the positioning plate and the limiting piece are removed. According to the tunnel arch foot connecting plate positioning tool, the connecting hole can be effectively prevented from being blocked.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering construction, and in particular relates to a tunnel arch foot connection plate positioning tool and a steel arch construction method. Background technique [0002] In the construction of tunnel engineering, the step method is generally used for tunnel construction, in which the primary support is the main load-bearing structure for the stability of the tunnel, the flexible structure closely attached to the surrounding rock and the main support means to control the deformation and relaxation of the surrounding rock, while the secondary support The lining is built when the deformation of the surrounding rock and the primary support are basically stable, and the primary support is the basis of the secondary lining. [0003] After the initial excavation of the tunnel is completed, in order to prevent the deformation of the surrounding rock and the collapse of the tunnel, measures must be ta...

AI Technical Summary

Problems solved by technology

In the arch construction, the installation and connection quality of the I-beam is directly related to the construction quality of the initial support, which plays a vital role in the initial support. The installation position is inaccurate, the spacing is not equal, inclined, or the bolt holes of the connecting plate are blocked due to the shotcrete covering the connecting plate, etc.

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