摘要
针对抗拔桩荷载传递机理和承载性状的研究比较缺乏的现状,本文通过对杭州某工程软土地基中抗压、抗拔钻孔灌注桩静荷载试验和桩身轴力的实测资料分析,研究了抗压桩与抗拔桩受力性状的异同性,得出了不同的荷载作用机理。结果表明抗拔桩和抗压桩的侧阻、端阻存在很大的不同,抗压桩端部侧阻发生增强效应,而抗拔桩端部侧阻出现退化效应。
The similarities and differences of tile behaviors of stresses for uplift piles and compressive piles are studied based on the in-situ testing results for the piles under compressive loads and tensile loads in soft soil. The mechanism of stresses under different loads is obtained. The results indicate that the lateral friction and end friction are quite different for the uplift piles and compressive piles. The improving effect occurs for the lateral friction at the end of compressive piles, and the degradation effect appears for the lateral friction at the end of uplift piles.
出处
《工程勘察》
CSCD
北大核心
2006年第6期4-9,共6页
Geotechnical Investigation & Surveying
关键词
抗拔桩
抗压桩
受力性状
异同性
uplift pile
compressive pile
behavior of stress
similarity and difference
