【摘要】 根据江坪河水电站工程资料,采用FLAC3D软件非线性分析方法对泄洪洞混凝土衬砌结构在地震作用下的响应进行动力计算;对衬砌上出现水平峰值位移和峰值应力最大的关键点进行跟踪,对某时刻衬砌上出现的最大水平位移与最大第一、三主应力进行分析。结果表明在地震波作用下,断层对衬砌结构应力影响明显,衬砌结构的应力最大响应时刻为4.4s;衬砌与断层相交处是衬砌结构的薄弱部位,应做加固处理。更多还原

【Abstract】 According to the engineering data of Jiangpinghe Hydropower Station,nonlinear analytic method in FLAC3D software is adopted to calculate the seismic response of concrete lining structure of spillway tunnels,and the key points of horizontal peak displacement and peak stress on the lining are trailed.The maximum horizontal displacement and the largest first and third principal stress on the lining are analyzed.The results show that fault affect stress of lining structure under the earthquake wave and the response of stress of lining structure appears in 4.4s;the intersections of the lining and the fault are weak parts,they should be reinforced.更多还原