Collapse Assessment of Steel Moment Frames Based on E-Defense Full-Scale Shake Table Collapse Tests
Collapse Assessment of Steel Moment Frames Based on E-Defense Full-Scale Shake Table Collapse Tests
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DOI：
10.1061/(asce)st.1943-541x.0000608
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
D. Lignos;T. Hikino;Y. Matsuoka;M. Nakashima
中科院分区：
文献类型：
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作者：
D. Lignos;T. Hikino;Y. Matsuoka;M. Nakashima
摘要本文提出了影响钢框架结构数值模拟的关键参数，以实现可靠的倒塌模拟。倒塌评估是基于一个4层钢弯矩框架的全尺寸振动台倒塌试验数据和与倒塌试验并行组织的盲数值分析竞赛。结果表明：(1)三维分析与二维分析在预测具有规则平面视图的建筑物侧倾倒塌机制方面没有明显的优势；(2)与刚度比例阻尼相比，瑞利阻尼假设能更好地预测结构响应；(3)塌方的准确预测需要在分析中考虑P-Δ效应。研究表明，准确模拟钢构件的劣化过程是可靠预测钢构件倒塌行为的关键因素。在综合实验和分析的基础上…
AbstractThis paper presents key parameters that affect numerical modeling of steel frame structures for reliable collapse simulations. The collapse assessment is based on experimental data obtained from a full-scale shaking table collapse test of a 4-story steel moment frame and a blind numerical analysis contest that was organized in parallel with the collapse test. It is shown that (1) there is no clear advantage between three-dimensional (3D) and 2D analyses in the prediction of a sidesway collapse mechanism for buildings with a regular plan view as in the case of study; (2) the assumption of Rayleigh damping leads to better predictions of structural response compared with stiffness proportional damping; and (3) accurate prediction of collapse necessitates that P-Δ effects always be considered in the analysis. It is also proven that accurate simulation of steel component deterioration is a key factor for reliable prediction of collapse behavior. On the basis of a synthesis of experimental and analytica...