Behavior of truss connectors in composite walls subjected to cyclic loading

IF 5.6 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-03-05 DOI:10.1016/j.engstruct.2025.120015

Ying Qin , Weifeng Hao , Rui Yin , Wei Ren , Ke Jiang

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引用次数: 0

Abstract

Connectors are used in composite walls to transfer shear load and enhance composite action between steel plates and concrete core. The behavior of connectors was mostly obtained from push-out tests. However, connectors may suffer from failure caused by earthquake, and shear capacity is significantly reduced due to the accumulated damage subjected to cyclic loading. In this research, results of tests on seventeen truss connectors under cyclic loading, finite element modelling, and theoretical analysis on shear capacity were presented. The effects of eight variables, including weld leg size, weld length, grade and thickness of angle steel, diameter of rebar, concrete thickness, truss orientation, and number of truss connector, on the shear behavior were evaluated. Finite element modelling was undertaken and the accuracy of the established models was validated against the test results in terms of failure modes, hysteresis loops, and shear capacity. Based on force transfer mechanism and parametric study, the formula to predict shear capacity was proposed and the shear-slip model was developed. The proposed model agreed well with test data and finite element results.

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来源期刊

Engineering Structures 工程技术-工程：土木

CiteScore

10.20

自引率

14.50%

发文量

1385

审稿时长

67 days

期刊介绍： Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.