【摘要】 针对某重力坝典型非溢流坝段抗震问题,运用ADINA软件建立了反映坝体混凝土与地基岩体材料非线性的重力坝抗震分析模型,采用地震动超载的方法对重力坝的极限抗震能力进行了分析,并探讨了分别以坝体混凝土开裂区贯穿和地基塑性区贯通作为大坝和地基动力稳定判别标准的抗震安全评价方法。结果表明,该重力坝典型坝段能承受峰值加速度约为0.826g的地震。更多还原

【Abstract】 Based on the typical non-overflow dam section of a certainn gravity dam,the software ADINA is used to establish a seismic analysis model of gravity dam which can reflect the material nonlinearity of dam concrete and foundation rock.And then the seismic overload method is adopted to analyze the ultimate seismic capacity of the gravity dam.Finally,the method of seismic safety,which takes the transfixion of the cracking zone of dam concrete and the plastic zone of foundation as the dynamic stability criterion of dam and foundation,is discussed in this paper.The results show that this dam section can undertake the earthquake whose peak acceleration is 0.826g.更多还原