Connecting structure between bridge abutment and road bed for solving problem of vehicle bump at bridge head

Abstract

The invention discloses a connecting structure between a bridge abutment and a road bed for solving the problem of vehicle bump at a bridge head. The connecting structure is positioned between the bridge abutment and the original road bed and comprises cement flyash gravel (CFG) piles, a soil filling structure, a cemented soil grouting treatment zone and geonets, wherein the CFG piles are positioned at the bottommost layer, effectively reinforce the original road bed and are used for reducing the settlement of the original road bed; the soil filling structure is positioned above the CFG piles, separated by the geonets, layered in parallel and filled with filler, each layer of geonet is locked together with each layer of filler of the soil filling structure to form a stable plane, the stable plane is used for effectively reducing and controlling the deformation of the connecting structure, and the layers of the soil filling structure are compacted after being filled so as to reduce the settlement of the connecting structure; and the cemented soil grouting treatment zone is positioned at the upper part of the soil filling structure and presents a wedge shape, one end of the cemented soil grouting treatment zone is connected with the back of bridges and culverts behind the bridge abutment, and the other end of the cemented soil grouting treatment zone is connected with the original road bed. The connecting structure disclosed by the invention prolongs the service life of a road surface, reduces the maintenance cost and improves the degrees of driving safety and comfort of a vehicle.

Description

technical field [0001] The invention belongs to the technical field of road and bridge transition section processing, and in particular relates to a connection structure between an abutment and a roadbed for solving the problem of vehicle jumping at a bridge head. Background technique [0002] At present, to solve the problem of vehicle jumping at the bridge head at home and abroad, abutment slabs are often installed in the transition section of roads and bridges, or foundation reinforcement treatment is carried out, such as compacted sand piles, CFG piles, and pipe piles. From the perspective of engineering practice, when using abutment slabs, differential settlement and transverse cracks are likely to occur on the road surface at the junction of the end of the slab and the subgrade, and the problem of "secondary vehicle jumping" is likely to occur; when other single foundation reinforcement treatment methods are used , the filling height is too large, or the settlement tim...

AI Technical Summary

Problems solved by technology

From the perspective of engineering practice, when using abutment slabs, differential settlement and transverse cracks are likely to occur on the road surface at the junction of the end of the slab and the subgrade, and the problem of "secondary vehicle jumping" is likely to occur; when other single foundation reinforcement treatment methods are used , the filling height is too large, or the settlement time of the subgrade and the abutment is different, so the problem of uneven settlement between the abutment and the abutment cannot be well solved

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