Road and bridge connection structure capable of effectively relieving bridge bump

Abstract

The invention discloses a road and bridge connection structure capable of effectively relieving bridge bump. The connection structure comprises an inverted frustum-shaped structure and filler. A flexible structure layer good in integrity and large in stiffness is formed by using the inverted frustum-shaped structure and mixing soil processed by sodium silicate, namely sodium silicate stabilized soil. By using the modulus gradual change principle and taking settlement factors including a foundation and a roadbed into consideration, an inverted frustum-shaped structure reinforcing area is arranged on a road and bridge transition section, the sodium silicate stabilized soil is added into the structure reinforcing area, one end of the flexible structure layer is fixed to an abutment, the other end of the flexible structure layer is connected with the roadbed, too large differential settlement is eliminated, and stable transition between the modulus of the rigid abutment and the modulus of the flexible roadbed is achieved. The connection structure can effectively reduce bridge bump and secondary bump problems, improves comfort and safety of driving, greatly reduces maintenance cost for bridge processing, and is remarkable in economic benefit.

Description

technical field [0001] The invention belongs to the technical field of road and bridge joint section treatment, and particularly relates to a road and bridge connection structure that can effectively slow down vehicle jumping at the bridge head, and can effectively control the bridge head jumping and secondary vehicle jumping at the bridge head. Background technique [0002] Bridge head jumping is generally caused by differential settlement changes at the bridge abutment and roadbed due to the difference in "hardness and softness", which will affect the comfort and safety of driving, especially on expressways. hazards and will increase maintenance costs for many bridges. Scholars at home and abroad have been working hard to solve this dangerous bridge disease for many years. The existing common solutions are generally the use of geogrid method, replacement method, CFG pile, cement mixing pile method and other foundation reinforcement methods. In fact, this kind of method ha...

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Problems solved by technology

In fact, this kind of method has indeed achieved relatively good results in the bridge head section, but in fact it only slows down the differential settlement for the foundation reinforcement section, which is equivalent to moving the differential settlement position backwards, and adding the lap joint plate and the subgrade of the untreated section There will still be rigid and uneven excessive settlement, and the phenomenon of jumping at the bridge head will always be formed.

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