An Anti-Settlement Structure of High Embankment Filled Bridge Head

Abstract

The invention relates to an anti-settlement structure at the head of a high embankment filled with soil. The anti-settlement structure at the head of the bridge includes an abutment, a pile foundation structure (12), a pavement structure layer (1), a slab structure layer (2) and a road base (5) ), said pavement structure layer (1) is laid on the board structure layer (2), it is characterized in that, one end of said board structure layer (2) is built on the abutment corbel (11) of the abutment Above, a pile foundation structure (12) is arranged under the slab structure layer (2), and is connected with the pile top of the pile foundation structure (12) to form a two-span or multi-span cast-in-place continuous slab structure, and the slab structure layer (2) A plain concrete layer (3) and a crushed stone cushion (4) are arranged in sequence, and the crushed stone cushion (4) is laid on the road base (5). Compared with the prior art, the invention has the advantages of smooth transition between the road and the bridge, excellent anti-settling performance of the bridge head, and the like.

Description

technical field [0001] The invention relates to a bridge head anti-settlement structure, in particular to a bridge head anti-settlement structure filled with high embankment. Background technique [0002] At present, in the construction of bridges, the joint position between the road and the bridgehead usually causes differential settlement between the road surface and the bridge surface due to the difference in the foundation stiffness of the subgrade pavement and the bridge structure, resulting in uncomfortable driving and even safety accidents. In the prior art, the bridge head slab is usually used to prevent the settlement of the bridge head. In this technology, the concrete slab is placed between the end of the abutment and the filling soil, and can be rotated as the filling soil settles. [0003] Chinese patent ZL 201220025591.4 discloses a settlement-preventing bridge head structure, including a bridge head base for supporting the main girder, a roadbed on the side of...

AI Technical Summary

Problems solved by technology

The above-mentioned patent obtains a certain anti-settling effect of the bridge head by adopting the structure of the bridge head slab, but when the height of the fill behind the abutment is high, due to the problems of foundation settlement, roadbed fill loss, and roadbed fill not reaching the degree of compaction, etc. , resulting in gapping between the slab structure and the subgrade filling, resulting in breakage of the knuckles of the slab structure, etc. Therefore, even if the slab is installed, there is still the phenomenon of bridge head jumping

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