水文地质工程地质2011，Vol.38Issue(1)：69-75,7.
桩筏结构加固路桥过渡段深厚淤泥地基的现场试验研究
Experimental study on pile-raft structure reinforcing deep silt foundation of transition section between bridge abutment and embankment
摘要
Abstract
The pile raft structure of prestressed pipe-pile and reinforced concrete slab was applied in reinforcing the deep silt foundation of the high-speed railway transition section between bridge abutment and embankment. The field tests were performed, including lateral displacement and pore water pressure of the abutment foundation, settlement of the pile-raft structure and bending moment and lateral displacement of the abutment pile. Based on the measured data, the effects of driving pipe-piles on the abutment foundation, constructing embankment near the transition section on the pile-raft structure stability and subgrade fill on the abutment pile were studied. The results show that: driving pipe-piles squeezes the adjacent abutment foundation, and the abutment impact-cone concrete piles should be constructed after 5 months following finishing the pipe-piles; constructing embankment near the transition section causes the pile-raft structure to float or uneven subside; the subgrade fill compresses the silt, which makes the abutment pile deviate.关键词
路桥过渡段/深厚淤泥地基/桩筏结构/挤土效应/路基填土/桥台基桩/侧向位移分类
建筑与水利引用本文复制引用
岳健,冷伍明,聂如松,杨奇..桩筏结构加固路桥过渡段深厚淤泥地基的现场试验研究[J].水文地质工程地质,2011,38(1):69-75,7.基金项目
国家自然科学基金资助项目(50678175) （50678175）
