Analytical seismic scenario-based probabilistic fragility relations form the spine of earthquake risk assessment and mitigation of RC high-rise wall buildings. In this study, a framework is proposed to develop both rigorous (refined) and less-demanding (cheaper) fragility relations for such structures. Multi-record incremental dynamic analysis is employed using a new scalar intensity measure and net inter-storey drift as a consistent global damage measure for varying heights of buildings. To illustrate the framework, a 30-storey wall building located in a multiple-scenario earthquake-prone region is analysed. The refined fragility sets are derived using 40 real earthquake records representing two seismic scenarios, while the proposed methodology to develop less-demanding seismic scenario-based fragility relations employs a considerably lower number of earthquake records. In this methodology, a new record selection criterion and a fragility curve tolerance factor are introduced. Finally, the two fragility relation sets for the reference structure are developed, assessed, and compared to provide insights into their features and accuracy. Using the proposed methodology, the study revealed that fairly reliable seismic scenario-based fragility sets can be developed for RC high-rise buildings with a significant reduction in computational time and efforts. The proposed framework is generic and can be implemented to deriving refined and less-demanding fragility relations for RC high-rise buildings of different configurations and structural systems.

中文翻译：

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RC高层建筑的严格性与要求不高的脆弱性关系

基于地震情景的概率易损性分析关系是RC高层墙建筑地震风险评估和缓解的脊柱。在这项研究中，提出了一个框架来开发此类结构的严格（精炼）和要求不高（便宜）的脆性关系。使用新的标量强度度量和层间净漂移来进行多记录增量动态分析，作为对建筑物不同高度的一致的整体破坏度量。为了说明该框架，分析了一个多场景地震多发地区的30层墙建筑。使用代表两个地震场景的40条真实地震记录推导精炼的脆弱性集，而提出的用于开发较少要求的基于地震场景的脆性关系的方法论则使用了相当少的地震记录。在这种方法中，引入了新的记录选择准则和易碎性曲线容差因子。最后，开发，评估和比较了参考结构的两个脆弱性关系集，以提供有关其功能和准确性的见解。使用所提出的方法，研究表明，可以为钢筋混凝土高层建筑开发相当可靠的基于地震场景的脆弱性集，同时显着减少计算时间和工作量。所提出的框架是通用的，可用于为不同配置和结构系统的RC高层建筑推导精简和要求较低的脆弱性关系。