Linear Redundancy Analysis Method Considering Plastic Region for Steel Truss Bridges
Linear Redundancy Analysis Method Considering Plastic Region for Steel Truss Bridges
复制标题
考虑塑性区域的钢桁架桥线性冗余分析方法
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
I. Eiji
中科院分区：
文献类型：
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作者：
H. T. Khuyen;I. Eiji
摘要本文描述了一种线性冗余分析程序，通过考虑将损坏从最初断裂的构件传播到其他构件的渐进倒塌分析来识别钢桁架桥中的断裂关键构件。传统的线性方法通过所有类型横截面的构件强度的线性方程检查每个构件的强度来评估结构的坚固性。然而，如果使用非线性曲线而不是单个线性方程来评估构件强度，结果会更准确。本文提出了一种新的线性冗余分析方法，该方法使用更准确的构件强度非线性方程，考虑了横截面完全屈服之前塑性区域的影响。该方法适用于工字型、H型、箱形等典型断面钢桁梁桥。对典型钢桁架桥进行非线性冗余分析以验证...
AbstractThis paper describes a linear redundancy analysis procedure to identify fracture critical members in steel truss bridges by considering progressive collapse analysis that propagates damage from the initially fractured member to other members. The conventional linear approach assesses structural robustness by checking the strength of every single member through linear equations of member strength for all types of cross sections. However, results are more accurate if member strength is assessed with a nonlinear curve rather than a single linear equation. This paper presents a new linear redundancy analysis method that uses a more accurate nonlinear equation for member strength that accounts for the effect of the plastic region before the cross section has completely yielded. The proposed method can be applied to steel truss bridges with typical sections, such as I-shaped, H-shaped, and box-shaped cross sections. A nonlinear redundancy analysis of a typical steel truss bridge was conducted to validat...