Tunnel-strode support large-span stand column device

Abstract

The invention provides a tunnel-strode support large-span stand column device. The device comprises multiple stand column cast-in-place pile, multiple stand column latticed columns, multiple latticedcolumn caps, a concrete support, multiple stranded wires and multiple support anchor plates; the lower parts of the stand column latticed columns are fixedly connected with the upper parts of the stand column cast-in-place piles; the latticed column caps are fixed at the tops of the stand column latticed columns; the stranded wires penetrate through the latticed column caps, and two ends are positioned on two sides of the stand column latticed columns; the concrete support is horizontally arranged; the support anchor plates are arranged under the concrete support; and the two ends of the stranded wires penetrate through the concrete support, and are fixedly connected with the support anchor plates. The device has the following advantages: gaps of stand column pipes are increased to avoid from an underground tunnel to be constructed under a foundation pit bottom; the top elevations of the stand column latticed columns are increased; and the support above the tunnel to be constructed issuspended through the steel strands and the anchor plates to achieve the purpose of not constructing stand column piles in the area of the tunnel to be constructed, and the difficulty of difficult arrangement of the stand column piles after excavation of the deep foundation pit above the tunnel to be constructed is solved.

Description

technical field [0001] The invention relates to a device for supporting a large-span column across a tunnel, belonging to the technical field of underground engineering foundation pit support. Background technique [0002] With the development of the city, the land use is becoming increasingly tight, and more and more urban public facility tunnels pass under the buildings under construction. Considering the requirements of sustainable development, the structure under construction needs to reserve space for the planned construction of urban expressways, subway tunnels and other underground structures, so as to prevent the structure under construction from becoming an obstacle and affecting the construction of public facilities. Although the foundation pit project is a temporary structure, the enclosure structure often becomes an insurmountable obstacle on the tunnel to be built due to the existence of a large number of underground structures such as row piles and column piles...

AI Technical Summary

Problems solved by technology

Although the foundation pit project is a temporary structure, the enclosure structure often becomes an insurmountable obstacle on the tunnel to be built due to the existence of a large number of underground structures such as row piles and column piles with small spacing and high density.

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