地基的原位应力状态与侧压力系数K_0取值分析

Stress State of the Ground in Siteand the Calculation of Lateral Pressure Coefficient K_0

分析了土体的原位应力状态及影响土的侧压力系数K0 的因素 ,探讨了K0与 φ′、K0 与 μ、K0 与OCR 等参数之间的内在联系 ,建议了一种与 P -S 曲线相关联的K0 计算方法 ,这种方法不仅理论上较为完善 ,而且为工程人员提供了设计依据 ,是一种很实用的方法。

This paper analyzes the stress state of subgrade in site, and the factors of influcing the coefficient K 0 are discussed . Moreover,some approaching methods,which can be used to calculate the coefficient K 0are introduced , A calculating method,which is internected with the P-S curve is proposed. This method is not only perfect in theory, but alse it is a very practical method which can be used to guide the engineers to design.