Road structure for preventing highway bump at bridge-head in soft soil area and method of road structure

Abstract

The invention discloses a road structure for preventing a highway bump at a bridge-head in a soft soil area and a method of the road structure. The road structure comprises an abutment and a road surface located on one side of the abutment. The road surface is sequentially provided with a road surface layer, an embankment and a roadbed from top to bottom. A water sealing layer is arranged betweenthe roadbed and the embankment. A water sealing mechanism is arranged in the side, near the abutment, of the roadbed and defined by multiple water sealing walls connected end to end. The end, near thewater sealing layer, of the water sealing mechanism is embedded in the water sealing layer. Underground water is isolated through a wall body, and the roadbed is kept dry. Moisture of a soft soil foundation can be isolated and effectively stopped, and later settlement of the roadbed can be effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of prevention and treatment of vehicle jumping at the bridge head of road engineering, and in particular relates to a road structure and a method for preventing vehicle jumping at the bridge head of a highway in a soft soil area. Background technique [0002] Vehicle jumping at the bridge head refers to the settlement of the approach road at the bridge head close to the back of the abutment abutment, the settlement value is generally l~-10cm (the settlement value of individual bridges on low-grade roads even exceeds 30cm), and the passing vehicles pass by here and cause jumps , Shock and bumps, this phenomenon is bridge head jumping. [0003] The hazards of jumping off the bridge: [0004] 1. Bring discomfort to the driver and passengers. When the vehicle reaches the bridge head with jumping disease, the driver and passengers will shake and be dazzled if they are light, and bump and scratch if they are hea...

AI Technical Summary

Problems solved by technology

When the vehicle reaches the bridge head with jumping disease, the driver and passengers will shake and be dazzled if they are light, and bump and scratch if they are heavy, and some even have traffic accidents, leading to disasters;

[0005] 2. Reduce the driving speed

In order to prevent the vehicle from jumping violently, the driver must not brake to slow down earlier, which weakens the efficiency of road use;

[0006] 3. The bridge and road are shortened and the service life is jumped and impacted by the jumping of the bridge head, which produces additional loads on the bridge and the road surface, and accelerates the damage of the bridge abutment, the bridge head plate, the support and the expansion joint;

[0007] 4. Affect the mechanical properties of the vehicle

[0015] In view of the phenomenon of "jumping at the bridge head", at present, grouting reinforcement is generally used to treat the car jumping at the bridge head, but the reinforcement effect of the one-time grouting method is average

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