刚性桩复合地基桩土应力比问题探讨

Discussion on Pile-Soil Stress Ratio of Rigid Pile Composite Foundation

刚性桩复合地基应用越来越广,承载力的应用也越来越高,应用过程中也遇到一些以前未引起重视的问题,其中褥垫层的承载力就是其一。为避免高承载力桩褥垫层遭到破坏,研究了褥垫层的承载力问题,提出桩土应力比的合理控制值,以保证复合地基承载力的可靠性,通过桩土变形协调的方法,讨论了桩土应力比的计算问题,对完善复合地基设计方法有一定的参考意义。

The application of rigid pile composite foundation is more and more widely,and the application of bearing capacity is getting higher and higher.And there are some problems that have not been paid attention to before are encountered in the application process,the bearing capacity of the cushion layer is one of them.In order to avoid the damage of the pile cap layer of high bearing capacity,the bearing capacity of the cushion layer is studied,and the reasonable control value of the pile-soil stress ratio is proposed to ensure the reliability of the bearing capacity of the composite foundation.In this paper,the calculation of pile-soil stress ratio is discussed,which has certain reference significance for perfecting composite foundation design method.