Road modification bridge section foundation pit supporting structure based on reverse building method and construction method thereof

Abstract

The invention discloses a road modification bridge section foundation pit supporting structure based on a reverse building method and a construction method thereof. The road modification bridge section foundation pit supporting structure comprises an original road. Side slopes at two sides of the original road are provided with foundation pit supports manufactured by using the reverse building method. Bridge deck slabs of the foundation pit supports at two sides are aligned to a bridge deck of the original road. The bottom end of the original road is horizontally and alternately provided witha plurality of layers of horizontal support systems. A concrete face wall which is upwards and downwards communicated is poured at two ends of a plurality of the layers of the horizontal support systems. According to the road modification bridge section foundation pit supporting structure based on the reverse building method and the construction method thereof, for a designing scheme of a road modification bridge section, the construction method of the foundation pit support based on the reverse building method is used, a bridge can be separately built. Normal passage of the original road is retained temporarily, construction of a temporary road is avoided, an environment is protected, land resources are saved, construction cost is reduced, and a construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a foundation pit support structure and construction method based on the reverse method of road reformation bridge section. Background technique [0002] With the continuous increase of traffic volume, the reconstruction and expansion of expressway has become a hot spot in the construction of highway engineering in our country. For the design scheme of expanding the old road into a bridge section, without affecting the normal traffic, the construction scheme is usually to build temporary roads on both sides of the rebuilt road, divert vehicles, and then excavate the old road and the soil layer below. Reconstructed into a bridge section, the disadvantages of this construction plan are high investment, long construction period, and temporary waste of surrounding land. In this situation, it is imminent to propose a new construction method. Contents of the invention [0...

AI Technical Summary

Problems solved by technology

For the design scheme of expanding the old road into a bridge section, without affecting the normal traffic, the construction scheme is usually to build temporary roads on both sides of the rebuilt road, divert vehicles, and then excavate the old road and the soil layer below. Reconstructed into a bridge section, the disadvantages of this construction plan are high investment, long construction period, and temporary waste of surrounding land

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