节理参数对水电站地下洞室围岩地震反应的影响研究  

Research on Influence of Joint Parameters on Seismic Response of Underground Chamber for Hydropower Station

作　　者：谷宁[1] 张运良[1] 

机构地区：[1]大连理工大学建设工程学部水利工程学院,辽宁大连116024

出　　处：《水电能源科学》2012年第1期80-83,共4页Water Resources and Power

基　　金：中国水利水电科学研究院开放基金资助项目(IWHRO2009019);国家自然科学青年基金资助项目(50809013)

摘　　要：以节理受力特性为出发点,基于FLAC3D软件平台,改进了Interface单元的法向刚度及切向刚度的输入取值方法,定义了节理参数的敏感度,并以含有一给定方向节理的某实际水电站地下洞室为背景建立了数值试验模型,根据场地条件输入人工地震波进行地震反应分析,探讨了对洞室围岩地震反应影响较大的节理参数,以期为含节理的地下岩石洞室动力稳定性分析提供参考。Based on the mechanical properties of a joint, the input method for normal and tangential stiffness about Interface element is improved in software FLAC3D. The sensitivities of joint parameters are defined. Taking an underground chamber of hydropower station with joint in a given direction for an example, the numerical test model is established. Artificial seismic waves are input for seismic response analysis in terms of the site conditions. It discusses the joint parameters that have more great influence on seismic responses of surrounding rock. Therefore, it is expected to provide reference for dynamic stability analysis of underground rock chambers with joints.

关 键 词：节理参数 水电站地下洞室 围岩 地震反应 敏感性分析 FLAC3D 

分 类 号：TV554[水利工程—水利水电工程] TU451[建筑科学—岩土工程]