摘要
地基土承受大面积堆载作用时 ,就会产生沉降 ,置于这种地基中的桩基础 ,在土体沉降的作用下 ,桩侧就会产生负摩擦力。本文从桩 土相互作用的机理出发 ,建立了非均质地基土中单桩弹性微分方程 ,利用太沙基一维固结理论和土层分层总和法求得堆载作用下 ,土层沉降随深度和时间变化的规律。由此求得均质地基土中 ,单桩的弹性微分方程的解析解 ,用有限差分法研究了非均质地基土中的情况 ,并用此法分析了某一工程实例。
A settlement will be occurred while the ground is subjected to a large amount of overload The negative fiction will be happened in the side of pile in the ground caused settlement A differential equation for the pile in an inhomogeneous ground is derived based on the model of pile?soil interaction The changes of the settlements depended with depth and time is obtained using the Terzaghi theory and layer?wise summation method Then,the analytic solution of a pile in the homogenous ground is deduced The case of an inhomogeneous ground is solved by the finite differential method An example is presented to illustrate the usage of the solution.
出处
《土木工程学报》
EI
CSCD
北大核心
2002年第1期79-82,共4页
China Civil Engineering Journal
关键词
大面积超载
沉降
桩基
有限差分析
a large amount of overload settlement,pile foundation,finite differential method
