灰土挤密桩复合地基作用的单桩有限元分析

灰土桩复合地基法是一种处理湿陷性黄土地基的一种方法，应用灰土挤密桩可以有效地减小地基沉降，故而其工程应用广泛。通过应用大型通用有限元软件Ansys对灰土挤密桩复合地基进行探讨，同时利用有限元程序加以计算，并分析灰土桩单桩复合地基的临界桩长，探讨灰土比、桩径对灰土桩复合地基临界桩长的影响，对于灰土桩的应用和推广具有现实指导意义。

Single Pile Finite Element Analysis of Lime-soil Compaction Pile Composite Base

Lime-soil pile composite base is usually used to dispose base in loess soils area. The lime-soil compaction pile can reduce effectively the base settlement and has got widespread application. In this paper the common large finite element software （Ansys） is used to discuss the lime-soil compaction pile composite base and the calculation of finite element program is utalized to analyze the critical pile length of this kind of base, what＇s more, the paper analyzes thoroughly the influences of the ratio of lime and soil as well as the pile diameter on the critical pile length of lime-soil pile composite base. They are of great guidance significance to the application and popularization of lime-soil pile.