【摘要】 文中对土石坝进行三维非线性动力反应分析,采用等价线性粘弹性模型,就地震波的形式、地震波入射角度、坝高等因素对动力反应的响应进行了研究。根据不同形式地震波以不同角度入射到坝体,坝体震动最大加速度的强弱变化情况,判断出土石坝地震动的最不利入射角度。结果表明,对于高100,200,300 m的土石坝,(15°,15°)为地震动入射的最不利角度。更多还原

【Abstract】 The paper analyzes the three-dimensional nonlinear dynamic response for the earth-rock dam by using the equivalent linear viscoelastic model and studies the response of seismic wave form,seismic wave incident angle,dam height and other factors on the dynamic reaction.According to the different form seismic waves incident on the dam with the different angles,the critical incident angle of seismic input could be determined through the strength changes of maximum acceleration of high earth-rock dam seismic.The results show that(15°,15°) is the critical incident angle of seismic input for the earth-rock dam with 100,200 and 300m height.更多还原