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On-line Access: 2019-06-05

Received: 2019-01-23

Revision Accepted: 2019-04-26

Crosschecked: 2019-05-09

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Paolo Zampieri


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Journal of Zhejiang University SCIENCE A 2019 Vol.20 No.6 P.389-410


Interaction between patch loading, bending moment, and shear stress in steel girders

Author(s):  Emanuele Maiorana, Cyrille Denis Tetougueni, Paolo Zampieri, Carlo Pellegrino

Affiliation(s):  Collegio dei Tecnici dellAcciaio (CTA), Viale dei Mille 19, 20129 Milano, Italy; more

Corresponding email(s):   paolozampieri@dicea.unipd.it

Key Words:  Elastic stability, Patch loading, Finite element method (FEM) analysis, Steel bridges erection

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Emanuele Maiorana, Cyrille Denis Tetougueni, Paolo Zampieri, Carlo Pellegrino. Interaction between patch loading, bending moment, and shear stress in steel girders[J]. Journal of Zhejiang University Science A, 2019, 20(6): 389-410.

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publisher="Zhejiang University Press & Springer",

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%T Interaction between patch loading, bending moment, and shear stress in steel girders
%A Emanuele Maiorana
%A Cyrille Denis Tetougueni
%A Paolo Zampieri
%A Carlo Pellegrino
%J Journal of Zhejiang University SCIENCE A
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%P 389-410
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%D 2019
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1900024

T1 - Interaction between patch loading, bending moment, and shear stress in steel girders
A1 - Emanuele Maiorana
A1 - Cyrille Denis Tetougueni
A1 - Paolo Zampieri
A1 - Carlo Pellegrino
J0 - Journal of Zhejiang University Science A
VL - 20
IS - 6
SP - 389
EP - 410
%@ 1673-565X
Y1 - 2019
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1900024

In bridge erection, a steel girder undergoing in-plane loading is commonly subjected to the interaction of several forces. Many previous studies have highlighted the effects of single in-plane loads on plate buckling but only a few works concentrated on the combined effects. For this reason, the stability of steel plates subjected to the combined action of patch loading, bending moment, and shear stress was studied through parametric analysis in this work. In particular, the effect of patch loading length combined with bending and shear stress was investigated. Other parameters like patch loading magnitude, panel aspect ratio, and plate slenderness have also been considered to characterize the plate stability. Through an intensive finite element method (FEM) analysis, new design equations have been defined to describe the influence of plate and load parameters on critical buckling loads of plates subjected to combined loads, with regard to plates subjected to patch loading. A comparison with the FEM results offers good accuracy, with a maximum deviation equal to 5%. To validate the analytical equations, a practical example is given.

An unique approach is presented in the manuscript for the consideration of M-V-F interaction in steel bridge design. This method is not commonly used in design practice, but the determination of the critical load amplifier can be usefully based on simple analytical ways.


创新点:1. 提出一个确定钢梁在平面荷载作用下的临界屈曲系数的新公式; 2. 通过与有限元分析结果对比以修正参数并获得解析公式的高精度.
方法:1. 采用有限元分析软件Strand 7研究矩形钢板在节点荷载、弯矩和剪应力综合作用下的弹性稳定性; 2. 针对节点荷载长度、载荷大小、板长宽比和长径比等参数分析对综合加载条件下的钢板稳定性的影响; 3. 借助一个实际的例子验证解析公式的有效性.
结论:1. 通过与有限元结果的比较,解析公式均表现出较高的精度,误差均在有限范围内且不受板几何形状的影响; 2. 节点荷载、弯矩和剪应力的综合作用通过减小板临界抗屈曲性导致钢板的屈曲失效; 3. 综合加载会导致临界抗屈曲性减小一半.

关键词:弹性稳定性; 节点荷载; 有限元分析; 钢桥架设

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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