摘要
饱和软土中打入式预制桩承载力的时间效应现象,已经在工程中得到验证。结合实际工程的现场实测静载荷试验资料,对饱和软土中打入式预制桩承载力的时间效应机理进行了分析。结果表明:随着休止时间延长,桩周扰动土的结构强度逐渐恢复,摩阻力逐渐增加,桩的承载力呈现一定的时效性。
Time-dependent effect of bearing capacity of driven pile in saturated soft soil has been known in the engineering practice effectively.Combined with in situ load test results,the mechanism of time-dependent effect on bearing capacity of driven pile in saturated soft soil is analyzed.The results showed that the structure strength of the disturbed soil around the pile is regained with the time increasing and the lateral friction of pile is also increased,which shows time-dependent effect.
出处
《土工基础》
2011年第3期30-32,共3页
Soil Engineering and Foundation
关键词
软土
桩土相互作用
时间效应
极限承载力
soft soil
pile-soil interaction
time-dependent effect
ultimate bearing capacity
