Bridge head part comprehensive treatment device and method suitable for coastal reclamation area

Abstract

The invention discloses a bridgehead part comprehensive treatment device and method suitable for a coastal hydraulic reclamation area. The bridgehead part comprehensive treatment device comprises a pipe pile fixed to a certain position away from a bridge abutment structure in the width direction of a bridgehead part and a high-pressure jet grouting pile reinforced to a certain position away from the pipe pile in the width direction of the bridgehead part. The pipe piles are located between the bridge abutment structure and the high-pressure jet grouting piles, supporting beams are fixed to the tops of the pipe piles, the tops of the high-pressure jet grouting piles are flush with the tops of the supporting beams, lapping plates A are erected between the tops of one sides of the supporting beams and lapping grooves of the bridge abutment structure, and lapping plates B are erected between the tops of the other sides of the supporting beams and the tops of the high-pressure jet grouting piles. The butt strap A and the butt strap B are located on the same plane. The continuous transition slab is arranged at the bridgehead position, and measures for preventing differential settlement by means of related structure construction and foundation treatment are taken, so that the bumping phenomenon at the bridgehead is effectively relieved, the driving safety of vehicles is guaranteed, and the impact load borne by a road structure and a bridge structure and generated by bumping is reduced.

Description

technical field [0001] The invention belongs to the technical field of comprehensive treatment of bridgehead parts, and in particular relates to a comprehensive treatment device and method of bridgehead parts suitable for coastal reclamation areas. Background technique [0002] The problem of vehicle jumping at the bridge head has always been one of the difficult problems that plagued technical managers in the municipal industry. The bridge head part, that is, the connection part between the road and the bridge, will inevitably produce a certain differential settlement due to the difference in the structural system of the road and the bridge itself. When the differential settlement value exceeds 10cm, the vehicle can feel bumps when driving through. When the differential settlement value exceeds 50cm, the vehicle will jump, which may lead to traffic accidents in severe cases. At the same time, it will produce a great impact load on the bridge and pavement structure for a lo...

AI Technical Summary

Problems solved by technology

When the differential settlement value exceeds 10cm, the vehicle will feel bumpy when passing by; when the differential settlement value exceeds 50cm, the vehicle will jump, which may lead to traffic accidents in severe cases

At the same time, it will generate a huge impact load on the bridge and pavement structure for a long time, resulting in damage or even destruction of the structure

Especially in the coastal dredging reclamation area, affected by the ultra-soft foundation, the road after conventional foundation treatment still has a post-construction settlement of more than 50cm, while the bridge foundation is in the form of a pile foundation, and the post-construction settlement is within 5cm, resulting in differential settlement more difficult to control

[0003] In order to prevent the phenomenon of car jumping at the bridge head, chemical reinforcement, drainage consolidation, and replacement and filling methods are often used to treat the foundation at the bridge head. Uniform settlement is controlled within a reasonable range (less than 10cm)

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