Viaduct road embankment structure with lower pile foundation bearing platform extending in roadbed, and construction method

Abstract

The invention relates to a viaduct road embankment structure with a lower pile foundation bearing platform extending in a roadbed, which mainly comprises roadbed treatment piles, pile top vertical and horizontal connection cover beams, light filler layers, stabilized soil backfill layers and horizontal reinforcement layers, wherein roadbed treatment piles are arranged in the roadbed, and connecting rebars are connected on the pile tops in advance; the vertical and horizontal connection cover beams are poured on the pile tops of the roadbed treatment piles and are connected with pile bodies through the pile top connecting rebars; the roadbed is backfilled by stabilized soil and the light filler layers in a layered mode, and is internally provided with the horizontal reinforcement layers. According to the viaduct road embankment structure, the integrality of a viaduct road embankment can be greatly improved, the property of roadbed filler can be improved, the weight of the filler is reduced, the problem of pavement longitudinal cracks and waves due to differential settlement caused by that a pile foundation bearing platform extends in the roadbed is solved, and the god technical and economic benefits are gained. The invention also provides a construction method of the road embankment structure.

Description

technical field [0001] The invention belongs to the field of foundation treatment, and relates to a combination control structure for subgrade deformation under a viaduct, in particular to an embankment structure in which pile caps under a viaduct extend into the subgrade and a construction method thereof. The integrity of the subgrade filler, reducing the weight of the filler and other multiple advantages are suitable for subgrade treatment projects under viaducts in highways and municipal roads in soft soil areas, especially for subgrade treatment where viaduct caps extend into the subgrade and cause cracks on the road surface. Background technique [0002] With the increasing demand for urban traffic, the proportion of viaducts and overpasses in urban traffic planning is increasing. However, due to the small width of the central isolation green belt of urban roads, when the size of the designed pile cap is large, the bridge Pile caps often extend into the subgrade below t...

AI Technical Summary

Problems solved by technology

However, on the whole, since these methods do not involve the structural optimization of embankments, their improvement effects are limited, and it is difficult to fundamentally solve the problem of deformation coordination of embankment fillings under bridge piles, and even a vicious circle will appear that the more the remediation, the more serious the problem will be.

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