Mechanical grouting sleeve of rebars: experimental investigations

IF 0.8 4区工程技术 Q4 ENGINEERING, MECHANICAL

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2024-04-16 DOI:10.1139/tcsme-2023-0014

Zengqiang Zhang, Jie Li, Shuhe Dai, Jingbo Guo

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Abstract

To ensure the reliability of prefabricated concrete structures and reduce the cost of sleeve, a new type of mechanical grouting sleeve of rebars was designed. According to the specification of the rebar joint, monotonic axial tension test and cyclic load test of the new rebar sleeve were performed. The working mechanism and connection performance of sleeve were studied. The results show that the unidirectional tensile strength of the sleeve joint can meet the requirement of 1.1 times of the tensile strength of the rebar. The deformation of mechanical grouting meets the requirements of standard under cyclic load. The strength and deformation properties of the rebar joint meet the requirements of standard of JGJ107-2010 for I level joint when the grouting length is large. The working mechanism of the mechanical grouting sleeve is discussed, which provides a new design method for the connection of rebar with different diameters. The research results are of great significance for promoting the development of prefabricated concrete structures.

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钢筋机械灌浆套筒：实验研究

为确保预制混凝土结构的可靠性并降低套筒成本，设计了一种新型钢筋机械灌浆套筒。根据钢筋连接规范，对新型钢筋套筒进行了单调轴向拉伸试验和循环荷载试验。研究了套筒的工作机理和连接性能。结果表明，套筒接头的单向抗拉强度可满足钢筋抗拉强度 1.1 倍的要求。机械灌浆在循环荷载作用下的变形符合标准要求。当灌浆长度较大时，钢筋接头的强度和变形性能满足 JGJ107-2010 I 级接头标准的要求。探讨了机械灌浆套筒的工作机理，为不同直径钢筋的连接提供了一种新的设计方法。研究成果对促进预制混凝土结构的发展具有重要意义。

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来源期刊

Transactions of The Canadian Society for Mechanical Engineering 工程技术-工程：机械

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

5 months

期刊介绍： Published since 1972, Transactions of the Canadian Society for Mechanical Engineering is a quarterly journal that publishes comprehensive research articles and notes in the broad field of mechanical engineering. New advances in energy systems, biomechanics, engineering analysis and design, environmental engineering, materials technology, advanced manufacturing, mechatronics, MEMS, nanotechnology, thermo-fluids engineering, and transportation systems are featured.