Cable tunnel construction method

Abstract

The invention discloses a cable tunnel construction method, and relates to the field of urban tunnel construction. The construction method comprises the construction steps of bottom plate construction, side wall plate construction, roof construction and waterproofing construction of side walls and a roof. Before bottom plate construction, a plurality of steel bars are uniformly distributed and embedded in an excavated cushion foundation pit in the transverse direction and the longitudinal direction, and after concrete pouring of the cushion layer is finished, the axis line, the sideline line and the control line are laid off on the cushion layer; side wall plate construction needs to be started after the bottom plate concrete has certain strength, a formwork support is erected, then binding construction of rear side wall plate steel bars is conducted, and casings and embedded parts are installed in time; the roof structure needs to be supported by a spigot-and-socket plate buckle fullsupport frame before roof construction; waterproofing construction of the side walls and the roof comprises laying an upper waterproofing coiled material and a lower waterproofing coiled material, andthen laying a layer of grid cloth on the upper waterproofing coiled material. The construction method is relatively low in cost and reliable and safe in construction, and can ensure quality of a mainbody structure.

Description

technical field [0001] The invention relates to the field of urban tunnel construction, in particular to a cable tunnel construction method. Background technique [0002] With the acceleration of urban development in our country, more and more economic investment has been invested in urban development. With the rapid development of today's cities, some construction methods in cities need to be improved more and more. In the process of urban tunnel construction, the most common methods are open-cut method and underground method. The open cut method is to use the pre-built enclosure structure to dig down from the ground to the place where the structure needs to be built, and then backfill the structure to restore it to the original ground. The underground excavation method is to excavate directly inside the soil without digging down from the ground (however, shafts and working wells still need open excavation). In short, the open excavation method is a construction method i...

AI Technical Summary

Problems solved by technology

However, the underground excavation method is relatively expensive, and the construction risk is high, which is especially suitable for the city center and some deeply buried structures.

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