Pros and Cons of Rotating Ground Motion Records to Fault-Normal/Parallel Directions for Response History Analysis of Buildings
Pros and Cons of Rotating Ground Motion Records to Fault-Normal/Parallel Directions for Response History Analysis of Buildings
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DOI：
10.1061/(asce)st.1943-541x.0000845
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
E. Kalkan;N. S. Kwong
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文献类型：
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作者：
E. Kalkan;N. S. Kwong
摘要根据美国的监管建筑规范（例如，2010年加州建筑规范）中，建筑结构的三维（3D）反应时程分析（RHA）需要至少两个水平地震动分量。对于活动断层5 km范围内的站点，应将这些记录旋转到断层法线/断层平行（FN/FP）方向，并分别进行两次RHA（当FN和FP与构造轴的横向对齐时）。假设该方法将导致两组响应，其涵盖所有非冗余旋转角度上的可能响应的范围。这个假设在这里进行检查，第一次，使用一个三维计算机模型的六层楼高的混凝土仪表建筑受到合奏的双向近断层地震动。计算了旋转角度从0 °到180°的工程需求参数（EDP）的峰值，以量化旋转角度和旋转角度之间的差异。
AbstractAccording to the regulatory building codes in the United States (e.g., 2010 California Building Code), at least two horizontal ground motion components are required for three-dimensional (3D) response history analysis (RHA) of building structures. For sites within 5 km of an active fault, these records should be rotated to fault-normal/fault-parallel (FN/FP) directions, and two RHAs should be performed separately (when FN and then FP are aligned with the transverse direction of the structural axes). It is assumed that this approach will lead to two sets of responses that envelope the range of possible responses over all nonredundant rotation angles. This assumption is examined here, for the first time, using a 3D computer model of a six-story reinforced-concrete instrumented building subjected to an ensemble of bidirectional near-fault ground motions. Peak values of engineering demand parameters (EDPs) were computed for rotation angles ranging from 0 through 180° to quantify the difference between...