观音岩水坝地震动力分析

将有厚度接触摩擦单元引入具有观音岩混合坝接头的堆石体与混凝土坝段之间的接触面进行力学模拟.在堆石及心墙料的静力本构关系上采用Ducan双曲线E-B模型模拟堆石坝的实际填筑施工和水库蓄水过程,并采用非线性动力分析方法对大坝连接坝段进行三维地震动力分析,揭示了插入式接头坝段采用在竣工期和运行期的接触面的应力情况和脱开情况.对心墙料与混凝土的接触面采用动力接触薄层单元进行模拟,真实地反映了地震过程中接触面的剪切及开合变形情况.根据动力分析成果,对大坝软接头的抗震性能及抗震安全性进行评价.

Guanyinyan Dynamic Analysis on the Dam

There will be contacts with the thickness of friction Guanyinyan the introduction of a mixed unit of joint dam with concrete rockfill dam section for contact between the mechanical simulation,and the rock core material of the static constitutive Ducan using a hyperbolic model E-B The actual rock-fill dam construction and reservoir filling process based on nonlinear dynamic analysis of the section of the dam to connect power to conduct three-dimensional seismic analysis revealed the use of plug-in connector section in the completion and operation of The period of contact stress and was torn off and analyzed.We use thin-layer access to power unit to carry out simulation core material contact with the concrete surface in order to truly reflect the earthquake in the process of contacts and the opening and closing of the shear deformation.According to the results of dynamic analysis,we evaluate the dam of the soft joint seismic performance and seismic safety evaluation.