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Quantitative failure metric for gravity dams

机译:重力坝的定量破坏指标

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Quantitative failure monitoring is a critical tool for safety assessment of concrete dams. This includes damage occurrence, intensity, location, number, size, and propagation pattern. Such an assessment is essential for a quantifiable prioritization of repair and will thus reduce overall cost and improve safety. This paper will address this timely topic through the nonlinear transient analysis of a dam and failure will be ascertained through a multi-scale damage index. A damage-plastic model for mass concrete is used, Drucker-Prager elasto-plastic one for the foundation, and infinite elements are used for far-field boundaries. Water-dam interaction is accounted for through fluid finite elements. It is determined that the proposed damage indices can indeed provide a quantitative metric for the degree of failure in gravity dams in terms of the input dynamic motion.
机译:定量失效监测是混凝土大坝安全评估的关键工具。这包括损坏的发生,强度,位置,数量,大小和传播方式。这样的评估对于定量确定维修的优先顺序至关重要,因此可以降低总体成本并提高安全性。本文将通过大坝的非线性瞬态分析解决这一及时的主题,并通过多尺度破坏指数确定破坏。使用大体积混凝土的损伤塑性模型,基础使用Drucker-Prager弹塑性模型,远场边界使用无限元。水坝相互作用是通过流体有限元解决的。可以确定的是,提出的损伤指数确实可以根据输入动态运动为重力坝的破坏程度提供定量指标。

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