岩土力学2011，Vol.32Issue(4)：1101-1107,7.
金沙江阿海水电站混凝土重力坝地震抗滑稳定性的时程法分析
Time-history analysis of seismic sliding stability of concrete gravity dam for Ahai hydropower station at Jinsha River
摘要
Abstract
Time-history analysis using dynamic FEM is employed to compute the seismic response of Ahai concrete gravity dam at the Jinsha River subjected to design earthquake loading.The hydrodynamic pressures and dam-foundation interaction are considered in the FEM model; and the foundation radiation damping effect of the seismic motion energy dissipating towards infinite domain is simulated as well.Firstly, the complex numerical simulation results are validated by comparison of dam body's maximum inertial forces between time-history analysis and spectrum method.Then.the following evaluation of the sliding stability of the dam can be conducted.The time history of anti-sliding safety factor is obtained using stress integration along the dam-base sliding interface.Because the minimum value of safety factor histories is 1.146; it can be conctuded that the Ahai dam has a relatively enough high capability for earthquake resistance that the reinforcement to improve the anti-sliding stability is not needed.The outcome of this study should be of interest and useful to professionals involved in the desigp of similar large gravity dams.关键词
金沙江阿海水电上程/混凝土重力坝/地震抗滑稳定性/时程分析/应力积分法/瞬态安全系数Key words
Ahai hydropower station at Jinsha River/ concrete gravity dam/ seismic sliding stability/ time-history analysis/ stress integration method/ transient value of the sliding safety factor分类
建筑与水利引用本文复制引用
黄诚,任伟中..金沙江阿海水电站混凝土重力坝地震抗滑稳定性的时程法分析[J].岩土力学,2011,32(4):1101-1107,7.基金项目
国家自然科学青年基金资助项目(No.51008298) （No.51008298）
岩土力学与工程国家重点实验室重点项目(No.SKLZ08064):国家重点基础研究发展规划(973)项目(No.2009CB724602). （No.SKLZ08064）
