Bridgehead vehicle jumping preventing device for bridge

Abstract

Provided is a bridgehead vehicle jumping preventing device for a bridge. The bridge comprises bridge platforms located on the two ends of a bridgehead. The side faces of the bridge platforms are filled with platform filled soil. The upper surfaces of the bridge platforms are connected with a lap joint plate laid on the upper surface of the platform filled soil so as to form a smooth and continuousbridge road. The bridgehead vehicle jumping preventing device which can adapt to the heat expansion and cold contraction of the bridge so as to reduce the sedimentation differential value between thebridge platforms and the platform filled soil is arranged in the platform filled soil. The bridgehead vehicle jumping preventing device comprises a cavity formed in the platform filled soil below thelap joint plate. A slide plate extending in the bridge length direction is laid in the cavity. The end face of one end of the slide plate faces the bridge platforms. The other end of the slide plateextends in the cavity. The upper surface of the slide plate and the lower surface of the lap joint plate are connected through a plurality of connecting pile arrays at intervals. Each connecting pilearray comprises a plurality of connecting piles arrayed in the bridge length direction. A gap among the lower surface of the lap joint plate, the slide plate, the connecting piles and the cavity is closely filled with granular filler.

Description

technical field [0001] The invention relates to a bridge head vehicle jump prevention device for bridges. Background technique [0002] Bridge head jumping refers to the phenomenon that the wheels vibrate up and down when the car passes through the road section due to the settlement between the bridge culvert structure and the embankment behind the bridge culvert platform exceeding a certain limit value. In recent years, the phenomenon of vehicle jumping at the bridge head has attracted more and more attention. [0003] The nature of the phenomenon of vehicle jumping at the bridge head is due to the differential settlement of the abutment and the fill soil behind the abutment. Among them, foundation settlement, especially in areas with poor natural foundation soil quality, plays a major role in the settlement of the entire embankment. Due to the high moisture content of the soil, relatively large voids, low natural bearing capacity, and high bridgehead filling roadbed, the...

AI Technical Summary

Problems solved by technology

The vehicle bump caused by the phenomenon of jumping will not only cause discomfort to the occupants of the vehicle, but even cause the vehicle to lose control, posing a threat to safety

For the bridge road itself, due to the jump and impact of vehicles passing the bridge head, additional impact loads are caused, which accelerates the damage of abutments, bridge head plates, supports and expansion joints, which not only increases the maintenance cost of the bridge but also Reduced service life

At the same time, it also aggravates the wear and tear of the parts and tires of the vehicle, reducing the service life of the vehicle.

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