基于Duncan-Chang本构的非线性土压力模型

详细信息

Non-linear earth pressure model based on Duncan-Chang constitutive model

1. Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang Uni-versity, Hangzhou 310027, China;
2. College of Architecture and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China

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。
- 非线性土压力 /
- 弹性地基梁 /
- m法 /
- Duncan-Chang模型
Abstract: Provided that the relationship between retaining wall deflection and earth pressure comply with hyper-bola 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 Dun-can-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.
- non-linear earth pressure /
- elastic resistance /
- "m" method /
- Duncan-Chang model