DEVELOPMENT AND APPLICATION OF HARDENING SOIL
CONSTITUTIVE MODEL IN FLAC3D
WANG Chunbo1,2,DING Wenqi1,2,QIAO Yafei1,2
(1. Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China;
2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,
Shanghai 200092,China)
Abstract:The finite difference scheme of hardening soil constitutive model is derived based on the increment theory of plastic. The finite difference program of hardening soil constitutive model is established so as that the secondary development of hardening soil constitutive model is realized with the platform for secondary development offered by FLAC3D software in VC++ environment. And then,the steps,methods and program essentials of constitutive model?s secondary development based on FLAC3D software are given. The comparison analysis between test results under different stress paths and FLAC3D numerical simulation results with different constitutive model is made so as to verify that the development of hardening soil constitutive model in FLAC3D is correct and necessity. Comparative analysis shows that the FLAC3D numerical simulation results with hardening soil constitutive model accord with test results. The parameters of hardening Soil constitutive model is simple and can be easily determined by conventional triaxial test. Hardening soil constitutive model can not only reflect the nonlinear characteristics of soil,but also can reflect complex stress path of deep foundation pit engineering. So,hardening soil constitutive model is more suitable for computing analysis of deep foundation pit engineering compared with other constitutive model of soil. Implementation of secondary development that hardening soil constitutive model is developed in FLAC3D software expands the scope of FLAC3D application,to some extent,it makes up for disadvantages of FLAC3D in analysis of geotechnical engineering,especially deep foundation pit engineering.
王春波1,2,丁文其1,2,乔亚飞1,2. 硬化土本构模型在FLAC3D中的开发及应用[J]. 岩石力学与工程学报, 2014, 33(1): 199-208.
WANG Chunbo1,2,DING Wenqi1,2,QIAO Yafei1,2. DEVELOPMENT AND APPLICATION OF HARDENING SOIL
CONSTITUTIVE MODEL IN FLAC3D. , 2014, 33(1): 199-208.
李广信. 高等土力学[M]. 北京:清华大学出版社,2004:32-113.(LIU Guangxin. Advanced soil mechanics[M]. Beijing:Tsinghua University Press,2004:32-113.(in Chinese))
Your browse does not support frame!