Construction method for underbridge

Abstract

The invention relates to a construction method for an underbridge. The construction method comprises the following steps of: firstly pouring a middle-part base plate and a vertical wall on ground, and reserving a steel pipe pile inserting hole on the base plate, wherein retaining wall guide rails are arranged on two side surfaces of the exterior of the base plate and the retaining wall guide rails and the base plate are poured together; after the concretion degree of the base plate is up to the concretion strength requirement, driving a retaining wall from two sides of the base plate to a place which is 0.5-1m below the lower surface of the base plate along the retaining wall guide rails, and inserting a steel pipe pile and applying pressure to the followed reduced place which is 0.5-1m below the lower surface of the base plate after drilling and taking out soil in the steel pipe pile inserting hole reserved on the base plate; arranging a jack at the top of the steel pipe pile by taking the steel pipe pile as a support, lifting up the base plate by use of the jack, taking out soil below the base plate and sinking the poured base plate and the vertical wall; and pouring the externally extended base plate and vertical wall again, repeating such steps till finishing the sinking process, taking out the steel pipe piles and the retaining walls, and mounting a beam plate. The construction method for the underbridge, disclosed by the invention, has the advantages of rather fewer machines used in the process of construction, small occupied area and smaller influence on surrounding environment.

Description

technical field [0001] The invention relates to a construction method, in particular to a construction method for underpassing bridges. Background technique [0002] In recent years, no less than ten underpass bridges have been built on the First Ring Road in Hefei City, Anhui Province alone. It can be seen that underpass bridges are an important measure to solve urban traffic problems. At present, there are mainly two construction methods for underpassing bridges: one is open-cut construction, which requires a larger construction site and has a greater impact on the surrounding environment; the other is continuous drilling on both sides of the underpassing bridge. Reinforced concrete piles, some of which have a depth of 20m, or even more than 20m. Different construction machines are used to drill concrete pile holes, but most of them carry water, resulting in mud and water everywhere on the construction site, and the environment is in a mess. The work after the piles were...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the deficiencies of the existing technology, and provides a new construction method for underpassing bridges, which solves the problem that in the prior art, many large-scale construction machines are used during the construction process, the construction quality is not ideal, and many materials are used for deep piles. , Poor construction environment, greater impact on the surrounding environment and other issues

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