沿海深厚软土地区桥头跳车综合处置技术试验研究

STUDY ON COMPREHENSIVE DISPOSAL TECHNOLOGY OF BRIDGE HEAD JUMPING IN COASTAL DEEP SOFT-SOIL AREA

桥头跳车是软土地区桥梁路基接头区普遍存在的问题,会对行车舒适度、桥梁结构和地基基础造成严重影响,并带来较重的维护经济负担。以工程实际为背景,对沿海深厚软土地区桥头跳车的综合处置技术及其处置效果进行试验研究。模型试验考虑了4种不同桩基加固处置方案,匹配相应的刚性面层,测试每种方案的土压力分布和沉降规律,并对土压力分布和沉降规律进行了纵向及横向对比,可供软土地区桥头跳车处置工程参考。

Vehicle jumping at bridge head is a common problem in the joint area of bridge subgrade in soft-soil area,which has a serious impact on driving comfort,bridge structure and foundation,but also brings a greater economic burden of maintenance.In this paper,based on the engineering practice,the comprehensive disposal technology and disposal effect of vehicle bump at bridge head in coastal deep soft-soil area are studied experimentally.The model test considers four different pile foundation reinforcement and disposal schemes with the corresponding rigid surface layer,tests the distribution of soil pressure and settlement law of each scheme,and compares the distribution of soil pressure and settlement law of each scheme vertically and horizontally.The comparison results can provide reference for bridge head jump disposal project in soft-soil area.