【摘要】 采用基于黏弹塑性模型的三维真非线性动力反应分析方法,进行了不同输入地震波作用下高土石坝地震反应分析。研究比较了在场地波、规范波、实测波三类不同输入地震波作用下高土石坝的加速度和动剪应力反应、地震残余变形、坝坡动力稳定性和大坝的抗震安全性。结果表明,在给定的三类不同输入地震波作用下,场地波作用下大坝的动力反应最大。整体来看,场地波作用下的计算结果相对保守,满足规范波作用下的安全性是最低要求,实测波选择上存在局限性。所提出的有关规律和结论,可为工程抗震设计提供技术依据。更多还原

【Abstract】 Seismic response analysis of high CFRD under different inputted earthquake waves is studied using a 3-D authentic nonlinear dynamic analysis method. Performances of a dam under site evaluated wave, specification wave, and measured wave, are evaluated and compared, including acceleration and shear stress response, permanent deformation, slope dynamic stability and anti-seismic safety. Among these three types of waves, site evaluated wave produces the strongest response. It is essential to meet the safety requirement in the case of specification wave, while it is often hard to select proper measured wave. This work would be useful for seismic design of high rock-fill dam.更多还原