Construction method of road-bridge connecting structure for retarding bumping at bridge head

Abstract

The invention discloses a construction method of a road-bridge connecting structure for retarding bumping at the bridge head. The connecting structure is arranged and comprises an inverted prismoid-shaped structure and filler, and the construction process of the connecting structure is completed through steps including leveling and vibrating compaction, mechanical-artificial material laying, mechanical compaction, laying of a geonet, layer-by-layer construction from bottom to top and the like. With adoption of the inverted prismoid-shaped structure and mixed sodium silicate-stabilized soil, a flexible structure layer with good integrality and higher rigidity is formed; an inverted prismoid-shaped structure reinforcement region is arranged in a road-bridge transition section, and the sodium silicate-stabilized soil is added to the structure reinforcement region, so that excessive differential settlement is eliminated, and smooth transition of a rigid abutment and a flexible subgrade modulus is realized. The method is simple to operate and facilitates large-scale popularization; moreover, after treatment with the construction method, the problems of bumping at the bridge head and secondary bumping can be effectively solved, the driving comfort and safety are improved, the maintenance cost of the bridge head is also greatly reduced, and the economic benefit is significant.

Description

technical field [0001] The invention belongs to the technical field of road and bridge joint section treatment, and in particular relates to a construction method of a road and bridge connection structure for slowing down 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 has indeed achieved relatively good results in the bridge head section, but in fact it only ...

AI Technical Summary

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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