期刊论文

Modeling and simulation in soft argillaceous shale tunnel based on porous elaso- plastic model

中文

铁道科学与工程学报

Journal of Railway Science and Engineering

1672-7029

2011

08

1

52-58

10.3969/j.issn.1672-7029.2011.01.010

中国博士后科学基金面上资助项目(20090460827)；

本校为第一机构

针对泥质页岩多孔、遇水易分解的岩性,基于剑桥粘土模型,建立了一个涉及多孔岩土材料的弹塑性本构模型,并数值模拟了某软弱泥质页岩隧道的力学行为.从混合理论出发,把泥质页岩体看成一个由固体(土)-流体(水)-气体(气)组成的三相混合体,引入有效应力的概念,建立了一个适用于工程实践的本构模型,该本构准则反映了有效应力与固相矩阵形变之间的发展方程、饱和度与吸力之间的关系方程以及液相和气相状态下,相关联的流动法则与固有压力的发展方程.开发了基于FORTRAN语言的大型有限元计算程序以及适用于泥质页岩多孔弹塑性土体的POROSTONE材料子程序,对某软弱泥质页岩隧道进行了数值模拟,并与现场实测...

On the basis of Cam-clay Model,a proposal constitutive model on porous elaso-plastic geo-material was derived for the argillaceous shale,which was porous and easy to decompose with water,and then the mechanical behavior in an argillaceous shale tunnel was simulated.According to the mix theory,the argillaceous shale was analyzed as a three-phase mixture coupling with solid-liquid-air,and the effective stress was introduced to set up a proposal constitutive model.The constitutive laws relate： the evolution of the constitutive effective stress wi...