不利围岩条件下竖井泄洪洞动力有限元分析  

Dynamic Finite Element Analysis on Horizontal Spillway with Soft Surrounding Rock

作　　者：徐大雷[1] 蒋勇[1] 

机构地区：[1]河海大学土木与交通学院,江苏南京210098

出　　处：《中州煤炭》2016年第5期47-50,共4页Zhongzhou Coal

基　　金：国家自然科学基金项目资助(51309090)

摘　　要：根据公伯峡竖井泄洪洞工程实例,利用MIDAS软件建立了有限元模型,并进行了动力计算分析,研究竖向地震作用对竖井泄洪洞地震响应的影响;得出不同高程处的水平与竖向双向地震作用下应力和位移均要比单向水平地震作用下更大,从位移及应力计算结果说明了竖向地震不可忽视,在结构设计中应重视竖向地震的作用。Taking horizontal spillway tunnels of Gongboxia hydropower station as an example,the finite element model was established by finite element software,MIDAS,dynamic calculation was also carried out,the influences of vertical seismic action on horizontal spillway tunnels were analysed. It was shown that,at different height,the stress and displacement of bi-directional seismic action were greater than that of horizontal and vertical seismic action. Calculation results of displacement and stress have shown that vertical earthquake can＇t be ignored,the role of vertical earthquake should be attached great importance in the process of structure design.

关 键 词：地下结构 复杂围岩条件 MIDAS 耦合作用 动力响应 

分 类 号：TD262.11[矿业工程—矿井建设]