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

Journal of Constructional Steel Research Pub Date : 2025-03-14 DOI:10.1016/j.jcsr.2025.109521

Tao Li , Hang Tian , Bin Xiao , Zhenyu Huang , Xiaoping Wang

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引用次数: 0

摘要

本研究对模块化集成建筑中使用的 L 形和方形灌浆套筒连接的抗剪性能进行了比较分析。共对 18 个灌浆试件进行了轴向荷载下的破坏测试，并研究了外部管子的抗剪性能、破坏模式和应变分布。此外，还研究了剪力键数量和间距对试件抗剪性能的影响。试验结果表明，L 型连接的抗剪性约为方形连接的 43.2% 至 61.0%。如果剪力键的布置充分合理，方形连接的抗剪性可以达到外部管材的截面屈服抗力。最后，还进行了有限元（FE）分析，以研究灌浆材料在加载过程中的损坏分布情况。测量的应变数据和有限元分析结果表明，在 L 型连接和方形连接中，外部管对灌浆料提供的约束在圆周上是不同的。有限元分析结果进一步表明，在 L 型连接中很少观察到孤立的压缩支柱，这也解释了为什么其抗剪性能明显低于方形连接。

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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Comparative study on the shear resistance of L-shaped and square grouted sleeve connections in modular integrated construction

This study presents a comparative analysis of the shear resistance of L-shaped and square grouted sleeve connections used in modular integrated construction. A total of 18 grouted specimens were tested to failure under axial loading, and the shear resistance, failure modes, and strain distribution of the external tube were examined. Additionally, the effects of shear key quantity and spacing on the shear resistance of the specimens were investigated. The test results indicate that the shear resistance of the L-shaped connection is approximately 43.2 % to 61.0 % of that of the square connection. When the shear keys are sufficiently and properly arranged, the shear resistance of the square connection can reach the section yielding resistance of the external tube. Finally, finite element (FE) analyses were performed to examine the damage distribution of the grout during loading. Measured strain data and FE results reveal that the confinement provided by the external tube to the grout varies circumferentially for both the L-shaped and square connections. FE results further show that isolated compressive struts are rarely observed in the L-shaped connection, which explains why its shear resistance is significantly lower than that of the square connection.

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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.