Construction method for solving problem of vehicle bump at bridge head

Abstract

The invention discloses a construction method for solving the problem of vehicle bump at a bridge head. The construction method comprises the following steps: arranging a connecting structure which comprises cement flyash gravel (CFG) piles, a soil filling structure, a cemented soil grouting treatment zone and geonets; sequentially leveling and compacting the original road bed under the soil filling structure through vibration; laying the CFG piles under the soil filling structure; laying the geonets and the soil filling structure from bottom to top from the bottom layer; and grouting and curing cemented soil to finish the whole construction process. The method disclosed by the invention has simplicity of operation, can greatly reduce the maintenance cost in bridge head treatment of a road construction administration section, effectively decreases the problems of vehicle bump at the bridge head, improves driving comfort and safety, has high construction quality, reduces the differential settlement between a bridge abutment and the original road bed to a large extent, and prolongs the service life of a road surface.

Description

technical field [0001] The invention belongs to the technical field of road and bridge transition section processing, and particularly relates to a construction method for processing the problem of vehicle jumping at the bridge head. Background technique [0002] At present, for the problem of car jumping at the bridge head at home and abroad, the commonly used construction methods are to set the bridge abutment in the transition section of the road and bridge, or to carry out foundation reinforcement treatment, such as compacted sand piles, CFG piles and pipe piles. From the perspective of engineering practice, the use of abutment slats will easily cause differential settlement and lateral cracks on the road at the junction of the end of the slats and the roadbed, which is prone to the problem of "second jumping"; when using other single foundation reinforcement treatment methods , the filling height is too large, or the settlement time of the subgrade and the abutment is d...

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

Images