Disturbance reinforcing structure and construction method of existing bridge in deep valley

Abstract

The disturbed reinforcement structure and construction method of existing bridges in deep valleys can effectively solve the problems of deformation and stability reinforcement of high-pier long-span bridges in steep slopes and valleys after disturbance, and has the characteristics of good economy, convenient construction, and environmental protection. The reinforcement structure includes: supporting pile foundations and supporting beams. The supporting pile foundations are arranged at intervals in the valley corresponding vertically to the foundation of the reinforced bridge abutment. The supporting beams are fixedly connected to the top of each supporting pile foundation, and their front ends are in close contact with the reinforced bridge abutment. , the rear end extends into the stable bedrock of the valley slope on the corresponding side of the reinforced bridge abutment; the reinforcement piles and soil retaining plates are arranged at intervals on the lower side of the valley in the influence range of the reinforced bridge abutment foundation, and the soil retaining plates are set at intervals Between the reinforcement piles and facing the upstream side of the valley; the waste muck body and the sealing layer, the waste muck body is filled in layers in the valley inside the reinforcement piles and the retaining plate, and the sealing layer is constructed on the top surface of the waste muck body.

Description

technical field [0001] The invention relates to geotechnical engineering, in particular to the reinforcing engineering of existing bridges disturbed by deep valleys in mountainous areas. Background technique [0002] Difficult and dangerous mountainous areas have steep terrain and poor geological conditions. Under such terrain and geological conditions, high-grade roads are built, and a large number of high-pier long-span bridges appear. The deformation of bridge engineering is extremely difficult to control and is easily affected by the external environment and disturbance. When new construction projects in the later stage have impacts on existing bridges, such as surrounding blasting vibrations, excavation disturbances, etc., how to strengthen and repair existing high-pier long-span bridges with high deformation requirements has become an urgent problem that needs to be solved. Convenient, economical, reliable and environmentally friendly. Contents of the invention [0...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a disturbed and reinforced structure for existing bridges in deep valleys, which can effectively solve the problems of deformation and stable reinforcement of long-span bridges with high piers in steep slopes and valleys after being disturbed, and has good economy and convenient construction , environmental protection and other characteristics

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