摘要
通过隔时复压等试验表明,静压桩的极限承载力随时间呈双曲线增大。静压桩时效性机理主要是触变恢复效应和固结效应。引入时间参数分析在粘土中沉桩时所引起的超静孔隙水压力,给出了考虑固结效应的超静孔隙水压力的解。考虑不确定性和模糊性的特点,根据静压桩的压桩力,推算桩的极限承载力,并给出了一种计算方法。
The ultimate bearing capacity of jacked pile increases with the time in hyperbolically pattern. The mechanism of time effect can be interpreted as the effect of disturb-restore property and the effect of consolidation of the soil around the pile. Time is adopted to analyze excess pore water pressure due to driven pile in clay; and a formula is derived. According to the original construction force and considering fuzzy and uncertain, we can calculate the final bearing capacity of the pile. Acalculating method is given.
出处
《岩土工程技术》
2005年第4期170-172,共3页
Geotechnical Engineering Technique
基金
建设部科学基金(02-2-1.18)
山东省教育厅科学基金(J02L04)
关键词
静压桩
时效
模糊
极限承载力
复压
jacked pile
time effect
fuzzy
ultimate bearing capacity
re-pressure