结构工程
情态动词
组分(热力学)
模态分析
地震模拟
地震工程
地震分析
弯矩
工程类
地质学
材料科学
有限元法
物理
热力学
高分子化学
作者
Edward L. Wilson,Martin R. Button
标识
DOI:10.1002/eqe.4290100309
摘要
Abstract At the present time, there is a need for a rational approach for the analysis and design of three‐dimensional structures subjected to multi‐component earthquake motions. In this paper, a general design criterion for multi‐component earthquake input is proposed. A new method for three‐dimensional dynamic analysis is presented which estimates maximum displacements, forces or stresses for specified points within a structure. For each maximum value calculated, the corresponding critical angle of earthquake input is evaluated. The method is readily incorporated into existing computer programs for earthquake analysis, allowing one computer run to produce mean maximum response values for all possible angles of earthquake input. Combined axial and bending stresses are calculated at the modal level. It is shown that combining modal stresses yields lower estimates than if stresses are evaluated from maximum axial forces and moments. In addition, the method can be used without modifications to perform design checks for arbitrary blast or seawave spectra.
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