边界面模型在FLAC^(3D)中的开发及验证  

Development and verification of bounding surface model in FLAC^(3D)

作　　者：雷小芹[1,2] 杨果林[1] 

机构地区：[1]中南大学土木建筑学院,长沙410075 [2]法国里昂国立应用科学学院土木与环境实验室,里昂69100

出　　处：《岩土力学》2012年第2期635-640,共6页Rock and Soil Mechanics

基　　金：国家自然科学基金资助项目(No.50778180);铁道部科技研究开发计划(No.2008G028-D-4)

摘　　要：利用FLAC3D程序提供的二次开发平台UDM在VC++编译环境下实现了一基于修正剑桥模型的简化边界面模型的开发。介绍了边界面模型的基本原理,并给出了开发关键技术和具体实施方法。通过三轴加卸载试验、不排水静三轴试验、不排水动三轴试验等几种数值试验与修正剑桥模型进行了对比研究。计算结果验证了所开发的边界面模型的正确性及相对修正剑桥模型的优越性。By using the further developing platform UDM,a simplified bounding surface model based on modified Cam-clay model is developed in the FLAC3D program in the VC＋＋ debug environment.The bounding surface model＇s basic principles are introduced,and the key technologies and the concrete methods of implementation are explained.Numerical simulations of loading and unloading triaxial tests,undrained triaxial shear tests are performed to study the difference between bounding surface model and modified Cam-clay model.The computed results show that the newly developed bounding surface model is reasonable and reliable,and has great advantages compared with modified Cam-clay model.

关 键 词：边界面模型 FLAC3D 二次开发 三轴数值试验 

分 类 号：O241[理学—计算数学]