Construction method of expressway underneath passing channel main body structure

Abstract

The invention relates to the technical field of expressway building construction, in particular to a construction method of an expressway underneath passing channel main body structure. The method comprises the following steps: 1, paving a plain concrete cushion layer; 2, pouring and tamping a cushion layer; 3, pouring and tamping a base layer; 4, performing side wall construction; 5, performing flat stone laying; 6, performing bottom adhesive layer asphalt concrete construction; and 7, carrying out upper adhering layer construction. The construction method has the beneficial effects that theconstruction method is more scientific and reasonable, the expressway underneath passing channel main body structure adopts a reasonable construction method and construction materials, the safety of construction and road traffic can be improved, and the construction efficiency is greatly improved; according to the construction mode, the phenomena of settlement and collapse of the road surface areavoided through a multi-layer overlapping laying mode, and under the same construction condition, compared with an existing construction method, the provided method has the advantages that the construction period is shortened, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of expressway building construction, in particular to a construction method for the main structure of an underpass passage of an expressway. Background technique [0002] With the improvement of my country's expressway network, it is particularly important to integrate traffic resources. It has become a common form to integrate traffic resources to connect the bottom of existing urban roads to connect new expressways. Pushing large box culverts or excavating existing roads for underpassing bridge construction, but due to terrain constraints, and hub interconnection lines are mostly in curved sections, construction techniques such as overspan bridges and pushing box culverts are limited and cannot be realized. [0003] Therefore, if the new expressway is connected with the existing highway, if the construction method is unreasonable during the tunnel construction process, it will lead to large-scale subsidence...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of my country's expressway network, it is particularly important to integrate traffic resources. It has become a common form to integrate traffic resources to connect the bottom of existing urban roads to connect new expressways. Pushing large box culverts or excavating existing roads for underpassing bridge construction, but due to terrain constraints and hub interconnection lines are mostly in curved sections, construction techniques such as overspan bridges and pushing box culverts are limited and cannot be realized

[0003] Therefore, if the new expressway is connected with the existing highway, if the construction method adopted is unreasonable during the tunnel construction process, it will lead to large-scale subsidence and collapse of the road surface, and in severe cases, it will cause traffic interruption and cause huge economic losses.

[0004] Therefore, a construction method for the main structure of the underpass of the expressway is proposed to solve the problem of road surface settlement

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