【摘要】 运用材料力学法和反应谱法分析验证了原地震动设计标准下大坝的安全性，通过动力时程法进行了地震加速度参数的敏感性分析，摸清了运行基准地震(OBE, Operational basis earthquake)和最大设计地震(MDE, Maximum design earthquake)工况下1号坝段的工作性态。新的1号坝段修复方案顺利完成并付诸实施，工程投资节省较多，保障了电站按时发电，经济效益显著。更多还原

【Abstract】 The safety of the dam under the original seismic design standard is verified through material mechanics method and response spectrum method. The sensitivity analysis of seismic acceleration parameters is carried out by means of dynamic time-history method, and the working performance of No. 1 Dam Section under operational basis earthquake(OBE) and maximum design earthquake(MDE) conditions is found out. The new restoration scheme of No. 1 Dam Section is successfully completed and put into practice, saving project investment, ensuring the power station to operate on time, and achieving significant economic benefits.更多还原