A kind of anti-subsidence structure and construction method of bridge head pavement

Abstract

The present invention relates to an anti-settling structure for bridgehead pavement, which comprises a bridgehead, an abutment arranged at one end of the bridge, a blocking platform arranged at the other end of the bridge, and a partition plate arranged under the bridge; The extension direction is set on the subgrade at the bridge head, and the bottom of the abutment is provided with a backfill layer; the abutment is arranged at the bridge head, and a bridge is placed on one side of it, and the other side is connected with the abutment; the abutment is vertical to the bridge It is set in the extension direction and is located below the end of the strapping board, and the strapping board is overlapped on the block platform; several partition boards are arranged along the extension direction of the bridge to divide the packing layer behind the platform into several areas, and the partition board The top of the board abuts against the upper surface of the board. The structure and construction method of the present invention can reduce the structural damage to the slab, alleviate the unbalanced settlement of the road surface and the bridge surface, and protect the safety and integrity of the road surface structure.

Description

technical field [0001] The invention relates to the technical field of road and bridge engineering, in particular to a bridge head road surface anti-settling structure and a construction method. Background technique [0002] At present, in bridge construction, the joint position between the road and the bridge head usually results in differential settlement between the road surface and the bridge deck due to the difference in the foundation stiffness of the subgrade pavement and the bridge structure. The subsidence of bridgehead road foundation, especially in the area with poor natural foundation soil quality, plays a major role in the settlement of the whole embankment. Due to the high water content of the soil, relatively large voids, and low natural bearing capacity in these areas with poor soil quality, the subgrade of the road filled at the bridge head is relatively high, which is prone to settlement, resulting in a large settlement height of the road surface and a smal...

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a bridge head road surface anti-settling structure and construction method, which can reduce the structural damage to the lapping board, alleviate the unbalanced settlement of the road surface and the bridge surface, and protect the safety of the road surface structure whole

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