摘要
针对FLAC3D(Version2.0)提供的粘弹性本构模型难以描述岩体变形随时间发展趋于稳定的现象,对FLAC3D的粘弹性模拟功能进行了开发,导出广义Kelvin模型的中心差分格式,并采用FLAC3D内嵌功能较强的FISH语言和FLAC3D的相关命令研制了广义Kelvin模型的接口程序。通过检验算例说明了开发思路和接口程序的正确性,同时还指出了二次开发时应注意的一些问题,并对基坑开挖进行了实例分析,结果符合基坑开挖变形规律。
In order to simulate the phenomena in which the deformation of rock mass can approache to stable finally with time, a visco-elastic constitutive model are developed based on FLAC^(3D)(Version (2.0)) software, and the central-difference format is derived for Kelvin-Voigt model. The interface code is developed using FISH language possessing FLAC^(3D) built-in funtion and correlative commands. The verification examples are given and prove the validity of procedure design. Meanwhile, some problems needed to be noticed are pointed out, and through analysis of a foundation pit, the result coincides with the defomation regularity of foundation pit excavation.
出处
《长江科学院院报》
CSCD
北大核心
2004年第2期10-13,共4页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金委员会与清江水电开发有限公司联合资助重点项目(59939190)
水利部创新项目(SCX2002-20)
