首页> 外文期刊>工程与科学中的计算机建模(英文) >Fragility Assessment of Pre-Northridge Steel Moment Frames Using Finite-Length Plastic Hinge Elements and Concentrated Plasticity Fracture Elements
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Fragility Assessment of Pre-Northridge Steel Moment Frames Using Finite-Length Plastic Hinge Elements and Concentrated Plasticity Fracture Elements

机译:使用有限长度塑料铰链元件和集中塑性断裂元件脆弱的钢管钢力矩框架的脆弱性评估

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Although pre-Northridge earthquake steel moment resisting frame buildings have been shown to be susceptible to brittle connection failures,they still represent a large fraction of the existing steel buildings in the United States of America.In this study,the performance of the 3-and 9-story Los Angeles pre-Northridge SAC buildings are analyzed considering ductile and brittle beam-column connection failures,and their uncertainty.This paper contributes to understanding the influence of uncertainty associated with connections brittle fracture on building interstory deformation capacity and its impact on bias and variability of fragility functions and loss assessment.The results show that considering brittle connections leads to significantly l arger d rift demands a nd t o h igher r epair costs,particularly under intense ground shaking.New fragility curve parameters are derived that account for the effect of the uncertainty of the strength and deformation capacity of brittle connections.
机译:虽然前诺里奇地震钢力矩抵抗框架建筑物已被证明易于脆弱的连接失败,但它们仍然代表美利坚合众国现有的钢铁建筑大部分。本研究,3 - 和3的表现考虑延展性和脆弱梁柱连接故障,以及它们的不确定性,分析了9层洛杉矶前诺诺诺诺诺诺斯山上建筑脆弱功能和损失评估的可变性。结果表明,考虑脆性连接导致显着的L ARGER D裂隙要求ND TOH IGHER R EPAIR成本,特别是在激烈的地面摇动下。推导出造成的脆弱曲线参数脆性连接强度和变形能力的不确定性。

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