水泥搅拌桩复合地基承载力参数取值探讨

摘要:

水泥搅拌桩复合地基在道路工程中的应用十分广泛，但对于水泥搅拌桩复合地基承载力计算过程中的参数如何合理确定，是值得深入研究的问题。如桩端天然地基土的承载力折减系数α、90d龄期的水泥土试块抗压强度平均值fcu、桩间土承载力折减系数β、分层土地基天然地基承载力fsk等参数的取值，相关规范中仍存在不完善的地方。文中通过案例对以上各种参数的取值进行了分析研究，并提出了取值的相关建议，以供参考。

Abstract:

Cement mixing pile composite foundation is widely used in road engineering. But how to reasonably determine the parameters in the calculation of bearing capacity of cement mixing pile composite foundation is a problem worthy of in-depth study. Parameters such as reduction coefficient of bearing capacity of natural foundation at pile end α, average compressive strength of 90d cement soil test block fcu and reduction coefficient of bearing capacity of soil between piles β, bearing capacity of natural foundation of layered soil foundation fsk are still imperfect in relevant specifications. This paper analyzes and studies the values of the above parameters through cases, and puts forward relevant suggestions for reference.