Analysis and design of the multi-Vierendeel-panels steel trusses with gusset plate connections

IF 4 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Constructional Steel Research Pub Date : 2024-11-04 DOI:10.1016/j.jcsr.2024.109142

Dan Gan , Xi Lu , Yang Li , Zexiang Li , Xuhong Zhou

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引用次数: 0

Abstract

Gusset plates are commonly used to connect chord and web members of a steel truss with a Vierendeel panel, which would impact the failure mode and overall stiffness of the steel truss. Gusset plates are important for seismic design of steel special truss moment frames and steel staggered truss frames but got little attention. This investigation established a high-fidelity finite element model for the multi-Vierendeel panels steel trusses, which was verified by large scale experimental results of a braced frame and truss with a Vierendeel panel. Then the influence of gusset plates on the load capacity and stiffness of the truss were analyzed in detail through parametric studies. Joint detailing was correspondingly proposed to prevent prior yielding and buckling of the chord flange. Formulas for calculating the cross section modulus ratio of the chord to the vertical web in the Vierendeel panel considering the gusset plate were put forward, which aimed to achieve a yielding mechanism that the vertical web members in the Vierendeel panel yield first to dissipate seismic energy. Lastly, a modified calculation model for trusses was proposed considering the gusset-plate connection region as a rigid link fixed-connected to members. This work provides a basis for the seismic design of trusses with Vierendeel panels.

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带桁架板连接的多Vierendeel板钢桁架的分析与设计

桁架板通常用于将钢桁架的弦杆和腹杆与 Vierendeel 板连接起来，这将影响钢桁架的破坏模式和整体刚度。桁架板对于钢制特殊桁架弯矩框架和钢制交错桁架框架的抗震设计非常重要，但却很少受到关注。本研究建立了多Vierendeel面板钢桁架的高保真有限元模型，并通过带Vierendeel面板的支撑框架和桁架的大规模实验结果进行了验证。然后，通过参数研究详细分析了桁架的承载能力和刚度对桁架的影响。相应地，还提出了接缝细部设计建议，以防止下弦翼缘发生事先屈服和屈曲。提出了考虑桁架板的维纶板弦杆与垂直腹杆的截面模量比计算公式，旨在实现维纶板垂直腹杆构件先屈服以消散地震能量的屈服机制。最后，考虑到桁架板连接区域是与构件固定连接的刚性连接，提出了一种改进的桁架计算模型。这项研究为采用维兰德钢板的桁架的抗震设计提供了依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Constructional Steel Research 工程技术-工程：土木

CiteScore

7.90

自引率

19.50%

发文量

550

审稿时长

46 days

期刊介绍： The Journal of Constructional Steel Research provides an international forum for the presentation and discussion of the latest developments in structural steel research and their applications. It is aimed not only at researchers but also at those likely to be most affected by research results, i.e. designers and fabricators. Original papers of a high standard dealing with all aspects of steel research including theoretical and experimental research on elements, assemblages, connection and material properties are considered for publication.