Push-out performance of stud/channel steel connectors in UHPC for new precast concrete beam-slab connections

IF 2.1 4区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Advances in Structural Engineering Pub Date : 2024-06-01 DOI:10.1177/13694332241254605

Jianxin Zhang, Tingwei Zhang, Weitao Yuan

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引用次数: 0

Abstract

At present, the connection between the beams and slabs adopting composite layers is cast on-site, which is laborious and time-consuming. In this study, a new type of precast concrete (PC) beam and PC slab connection, which was connected by stud/channel steel connectors, was proposed to enhance the efficiency of prefabricated construction. Push-out tests were carried out on 5 PC beam-slab specimens connected with studs and 3 PC beam-slab specimens with channel steel connectors. The test variables were the connecting methods of beam-slab, the connector reinforcement ratio and the connecting width between two slabs. The failure process, load and slip of the beam-slab connection were recorded. Then, the slip behavior, shear capacity and shear stiffness of the PC beam-slab connection were analyzed. The results showed that the new type of PC beam-slab connection proposed in this study was an effective form for transferring force between the beam and slabs. Based on the push-out test results, the shear mechanism of connectors was analyzed and the calculation formulas for shear strength of stud/channel steel connectors were put forward. The calculated values obtained from the proposed formula demonstrated a strong correlation with the test results, providing an accurate measurement of shear strength of the new type of PC beam-slab connection. This study offers a reference for realizing the fast-full assembly construction of PC frame.

查看原文本刊更多论文

用于新型预制混凝土梁-板连接的超高性能混凝土螺柱/槽钢连接件的抗拔性能

目前，采用复合层的梁和板之间的连接是现场浇筑的，费工费时。本研究提出了一种新型预制混凝土（PC）梁和 PC 板连接方式，即通过螺栓/槽钢连接件进行连接，以提高预制建筑的效率。对 5 个用螺栓连接的 PC 梁-板试件和 3 个用槽钢连接件连接的 PC 梁-板试件进行了挤压试验。试验变量为梁板连接方式、连接件配筋率和两板之间的连接宽度。记录了梁板连接的破坏过程、荷载和滑移。然后，分析了 PC 梁-板连接的滑移行为、抗剪承载力和抗剪刚度。结果表明，本研究提出的新型 PC 梁-板连接是一种在梁和板之间传递力的有效形式。根据推出试验结果，分析了连接件的剪切机制，并提出了螺栓/槽钢连接件的剪切强度计算公式。计算公式得出的计算值与试验结果具有很强的相关性，为新型 PC 梁-板连接的抗剪强度提供了准确的测量方法。该研究为实现 PC 框架的快速全装配施工提供了参考。

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

Advances in Structural Engineering 工程技术-工程：土木

CiteScore

5.00

自引率

11.50%

发文量

230

审稿时长

2.3 months

期刊介绍： Advances in Structural Engineering was established in 1997 and has become one of the major peer-reviewed journals in the field of structural engineering. To better fulfil the mission of the journal, we have recently decided to launch two new features for the journal: (a) invited review papers providing an in-depth exposition of a topic of significant current interest; (b) short papers reporting truly new technologies in structural engineering.