A kind of anti-high-fill roadbed bridge head jumping structure

Abstract

The invention discloses an anti-high-fill roadbed bridge head jumping structure, which mainly relates to the technical field of roads and bridges, and includes a bridge abutment and a beam plate. Structural beams, the structural beams are arranged on the foundation roadbed, and are arranged in a stepped distribution near the bridge platform from the outside. The structural beams are provided with ear hooks, guide blocks and slots, and frame shear structures are arranged on the structural beams. The frame shear structure includes two upper and lower concave-convex bearing plates, the upper and lower two concave-convex bearing plates are connected by support ties, and the support ties are provided with anti-buckling ribs that support the upper concave and convex bearing plates. A backfill layer is arranged inside the frame-shear structure, and a gravel layer, a hard soil layer, and an asphalt pavement layer are sequentially arranged on the frame-shear structure.

Description

technical field [0001] The invention mainly relates to the technical field of roads and bridges, in particular to a vehicle jumping structure at the bridge head of a high-fill roadbed. Background technique [0002] With the continuous and steady growth of my country's national economy, highway construction has also entered a period of rapid development. The construction and use of expressways have played an important role in promoting the country's economic construction and alleviating the pressure on other transportation. However, it should also be noted that with the prolongation of the use time, the continuous growth of traffic volume and the increase of load capacity, many problems have also occurred in the operation of expressways, and jumping at the bridge head is one of the most common problems. [0003] The bridge head jumping is a common problem in road traffic. The bridge head jumping is the junction of the bridge and the roadbed. Due to the inconsistent settlemen...

AI Technical Summary

Problems solved by technology

[0003] Bridge head jumping is a common problem in road traffic. Bridge head jumping is caused by the settlement of the bridge head and the embankment at the junction of the bridge and the embankment, which leads to the misalignment of the bridge head, which seriously affects the driving safety, accelerates the bridge and road surface diseases, and affects the damage of road bridges. The operation has a great impact, especially in places with soft soil foundations and high roadbeds, vehicle jumping is more serious, which brings great hidden dangers to driving

The serious phenomenon of vehicle jumping at the bridge head will not only greatly increase the discomfort of driving, but also cause the vehicle to decelerate significantly and accelerate the damage of bridges, roads and vehicles. The serious vehicle jumping phenomenon will cause the vehicle to lose control and easily cause traffic accidents.

[0004] It is a more effective and economical comprehensive treatment method to prevent vehicle jumping at the bridge head by setting up the strap and adding braces under the strap to increase the stiffness of the foundation. Reinforcement is also mostly based on experience. Therefore, it is difficult to determine the actual mechanical performance, especially the deformation performance, of the slab under the load of the vehicle, which is not conducive to taking targeted measures to prevent vehicle jumping at the bridge head

Moreover, there is a lack of systematic and in-depth research on the use effect and stress-deformation performance of the slabs under different support conditions.

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