摘要
首先对侧阻的退化机理进行了分析,随后提出了考虑侧阻退化的静压桩沉桩阻力计算公式,通过实例分析得出该方法模拟结果较好,但桩上部的预测值都大于压桩力而端部压桩力大于预测值。最后通过实例说明静压桩在砂土中也存在时间效应,指出砂土中承载力时效问题主要也是侧阻的时间效应并从二个方面对其时效机理进行了分析。
This paper analyzed fiction fatigue mechanism, and presented a new method calculating penetration resistance. Example shows that it is reasonable and useful, but the calculation value is greater than the test＇s. An analysis of the case example indicates the long-term set-up of jacked pries in sand; it shows the increase of the bearing capacity of pile in sand results from the increase of the pile side friction and presents setup mechanism.
出处
《低温建筑技术》
2009年第3期76-79,共4页
Low Temperature Architecture Technology
基金
国家自然科学基金项目(50678086)
关键词
静压桩
侧阻退化
时效
jacked pile
fiction fatigue
set-up
