Linear and nonlinear response of concrete slab on CFR dam during earthquake
Linear and nonlinear response of concrete slab on CFR dam during earthquake
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DOI：
10.1016/j.soildyn.2010.04.010
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发表时间：
2010-10
影响因子：
4
通讯作者：
A. Bayraktar;M. Kartal
中科院分区：
文献类型：
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作者：
A. Bayraktar;M. Kartal
在混凝土面板堆石坝的经典模型中，混凝土板与堆石之间的接缝被设计为焊接接触，并通过该方法确定了混凝土面板堆石坝的地震响应。在这项研究中，研究了 Torul CFR 大坝在强地震激励期间的线性和非线性响应，包括混凝土板和堆石之间的界面单元。通过空库和满库两种情况进行有限元分析，研究库水对大坝地震反应的影响。通过拉格朗日方法用流体有限元对水库水进行建模。 Drucker-Prager 模型用于混凝土板、堆石和土壤材料的非线性分析。根据有限元分析，位移和应力分量因动水压力而增加。监测混凝土板的非线性响应峰值地面加速度（pga）。这项研究表明，滑动区的尺寸随着加速度幅度的增加而增加。
The joint between concrete slab and rockfill is designed as welded contact in the classical modeling of concrete-faced rockfill (CFR) dams and earthquake response of the CFR dams is determined by this method. In this study, linear and nonlinear response of Torul CFR Dam including interface element between concrete slab and rockfill were investigated for the duration of strong seismic excitation. The finite element analyses were performed by employing both cases, empty and full reservoir, to research the effect of the reservoir water on the earthquake response of the dam. The reservoir water was modeled with fluid finite elements by the Lagrangian approach. The Drucker-Prager model was used in nonlinear analyses for concrete slab, rockfill and soil materials. According to finite element analyses, displacement and stress components were increased by hydrodynamic pressure. The nonlinear response of the concrete slab was monitored about the peak ground acceleration (pga). This study reveals that the size of sliding zone increases with increasing acceleration amplitudes.