For the reinforced concrete frame-shear wall (RCF-SW) structures in hydropower plants (HPs), the tensile cracking and compressive crushing of the reinforced concrete (RC) members are considered as the main potential damage. This paper presents a methodology to assess the seismic performance of RCF-SW structures. In this methodology, a concrete damage plasticity model is employed to simulate the reinforced concrete, and the structural seismic responses are investigated through nonlinear incremental dynamic analysis (IDA). Several engineering demand parameters (EDPs) based on the material damage are proposed to identify the structural engineering limit states and damage states at the member level. The case of x HP is provided as an example to illustrate the methodology and discuss the probable nonlinear response and structural damage state. The concrete damage evolution, reinforcement stresses, and drift ratios of the RCF-SW structure are presented, and the engineering limit states and structural damage states are identified. In comparison with the drift ratio index, the EDPs based on material damage are more suitable for identifying the damage state of the RCF-SW structure, whose damage is controlled by the damage of the RC members.

中文翻译：

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基于材料损伤的水电站钢筋混凝土框架剪力墙结构抗震性能评估

对于水力发电厂（HPs）中的钢筋混凝土框架-剪力墙（RCF-SW）结构，钢筋混凝土（RC）构件的拉伸开裂和压缩破碎被认为是主要的潜在破坏。本文提出了一种评估RCF-SW结构抗震性能的方法。在这种方法中，采用混凝土损伤可塑性模型来模拟钢筋混凝土，并通过非线性增量动力分析（IDA）研究结构的地震响应。提出了几种基于材料损伤的工程需求参数（EDP），以识别构件级别的结构工程极限状态和损伤状态。以x HP的情况为例来说明该方法，并讨论了可能的非线性响应和结构破坏状态。给出了RCF-SW结构的混凝土损伤演化，增强应力和漂移率，并确定了工程极限状态和结构损伤状态。与漂移比指数相比，基于材料损伤的EDP更适合于识别RCF-SW结构的损伤状态，RCF-SW结构的损伤由RC构件的损伤控制。