Structure for reducing pressure and subsidence of behind-abutment earth for bridge and construction method thereof

Abstract

The invention relates to a structure for reducing pressure and subsidence of behind-abutment earth for a bridge and a construction method thereof. The structure comprises a bridge abutment, wherein the bridge abutment supports a main beam; the abutment front side of the bridge abutment is provided with an in-front-of-abutment revetment; the abutment rear side of the bridge abutment is provided with behind-abutment filling earth; a corrugated plate which is vertically arranged is arranged between the bridge abutment and the behind-abutment filling earth; concave parts and convex parts in the corrugated plate are vertically alternately arrayed; the concave parts are filled with shrinkable materials in two sides of the corrugated plate. The structure is used for effectively preventing the behind-abutment earth from generating subsidence and falling off, preventing a behind-abutment splice plate from generating the subsidence, eliminating distress of bumps at bridge-head and the like, improving running safety and smoothness and decreasing a maintenance cost of the bridge, can be used for improving an entire lifecycle of the bridge, is used for prolonging and improving a service life period and the traffic capacity of the bridge, has advantages of simple structure, high universality, convenient construction and the like, and meanwhile, has important practical significance and engineering application value.

Description

technical field [0001] The invention relates to a structure for reducing earth pressure and settlement behind a bridge abutment and a construction method thereof. Background technique [0002] During the actual use of the bridge abutment, due to the action of vehicle load, temperature and other external factors, problems such as accumulation of earth pressure behind the abutment and settlement of the soil behind the abutment are most likely to occur. question. The settlement and damage of the lap board not only caused the phenomenon of vehicle jumping at the bridge head, affecting the ride comfort and safety of the vehicle, but also reduced the life cycle of the bridge and increased the maintenance cost of the bridge. The main reasons for the settlement and damage of bridge slabs are as follows: one is that the soil behind the abutment undergoes plastic deformation and settlement under the action of its own weight and environmental factors; the other is that the abutment re...

AI Technical Summary

Problems solved by technology

At present, methods such as arranging geogrids behind the abutment, replacing backfilling behind the abutment, and setting flexible slabs are mainly adopted. However, these methods only treat the symptoms but not the root cause.

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