摘要
假设基坑工程中挡土结构的变形和土压力服从双曲线模型,类比Duncan-Chang本构建模思想,在前人关于基坑主动区和被动区变形假设的基础上,建立了可以考虑位移变化的非线性土压力模型。把非线性土压力模型和Duncan-Chang本构模型联系起来,使得本文非线性土压力模型参数确定有根据。把弹性地基梁模型和该非线性土压力联系起来,使得弹性抗力系数的概念更加明确。以m法为例,深入分析了m法的影响因素。
Provided that the relationship between retaining, wall deflection and earth pressure comply with hyperbola model, the nonlinear earth pressure considering retaining wall deflection is built. The nonlinear earth pressure model based on the predecessors＇ researches on foundation pit active and passive zones, which builds like Duncan-Chang model. Therefore, the parameter of the nonlinear pressure can be ascertained by conventional triaxial tests in the way Duncan-Chang model makes. The elastic resistance method connects with the nonlinear earth pressure, this makes elastic resistance coefficient definite. Taking ＂m＂ method as an example, the influence factors are analyzed.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2008年第2期36-39,共4页
Coal Geology & Exploration
作者简介
吴明（1979-），男，陕西蓝田人，博士研究生，主要从事基坑和边坡工程研究．
