桥梁梯形波纹钢腹板整体和相互作用剪切屈曲分析方法的修正

IF 1.7 3区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Advanced Steel Construction Pub Date : 2019-01-01 DOI:10.18057/ijasc.2019.15.4.6

Sumei Liu, H. Ding, L. Taerwe, W. Corte

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引用次数: 3

摘要

波纹钢腹板的整体剪切屈曲系数kg的取值和相互作用剪切屈曲应力的计算公式仍然是争论的主题。本文首先利用伽辽金法推导了csw整体剪切屈曲应力和相互作用剪切屈曲应力的解析公式。给出了四棱简支、四棱固定支、两棱固定、两棱简支整体剪切屈曲系数kg的简化公式，以及相互作用剪切屈曲系数表。其次，进行弹性有限元分析，对解析公式进行验证，研究几何参数对csw剪切屈曲应力的影响。最后，采用本文提出的整体剪切屈曲应力和相互作用剪切屈曲应力计算公式，建立了csw抗剪强度设计公式。将该设计公式计算的抗剪强度与之前4个设计公式计算的抗剪强度以及一系列已发表的试验结果进行对比，发现所考虑的设计公式对csw抗剪强度具有较好的预测效果，可以推荐使用。收稿日期:修订日期:接受日期:2019年1月15日2019年6月07日2019年6月13日

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MODIFICATIONS TO THE GLOBAL AND INTERACTIVE SHEAR BUCKLING ANALYSIS METHODS OF TRAPEZOIDAL CORRUGATED STEEL WEBS FOR BRIDGES

The value of the global shear buckling coefficient kg and the formula for the interactive shear buckling stress of corrugated steel webs (CSWs) are still the subject of debate. In this study, firstly, the analytical formulas for the global and interactive shear buckling stresses of CSWs are deduced by the Galerkin method. Simplified formulas for the global shear buckling coefficient kg for a four-edge simple support, for a four-edge fixed support, for two edges constrained by flanges fixed and the other two edges simply supported, and an interactive shear buckling coefficient table are given. Secondly, an elastic finite element analysis is carried out to verify the analytical formulas and to study the influence of geometric parameters on the shear buckling stress of CSWs. Finally, a design formula for the shear strength of CSWs which adopts the formulas for the global and interactive shear buckling stresses proposed in this paper is assessed. From a comparison between the shear strength calculated by this design formula, calculated by four previous design formulas and measured in a series of published test results, it is found that the considered design formula provides good predictions for the shear strength of CSWs and can be recommended. Received: Revised: Accepted: 15 January 2019 07 June 2019 13 June 2019

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来源期刊

Advanced Steel Construction CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL

CiteScore

2.60

自引率

29.40%

发文量

审稿时长

6 months

期刊介绍： The International Journal of Advanced Steel Construction provides a platform for the publication and rapid dissemination of original and up-to-date research and technological developments in steel construction, design and analysis. Scope of research papers published in this journal includes but is not limited to theoretical and experimental research on elements, assemblages, systems, material, design philosophy and codification, standards, fabrication, projects of innovative nature and computer techniques. The journal is specifically tailored to channel the exchange of technological know-how between researchers and practitioners. Contributions from all aspects related to the recent developments of advanced steel construction are welcome.