Experimental study on shear behavior of perforated steel plate shear connectors in fully prefabricated composite slabs

被引：0

作者：

Zhou L. ^{[1
,2
]}

Fang J. ^{[1
,2
]}

Fan J. ^{[1
,2
]}

Li F. ^{[3
]}

Dai C. ^{[3
]}

Zeng B. ^{[3
]}

Liao F. ^{[3
]}

机构：

[1] School of Civil Engineering, Central South University, Changsha

[2] National Engineering Laboratory of High-Speed Railway Construction Technology, Central South University, Changsha

[3] The Third Construction Co., Ltd. of China Construction Fifth Engineering Bureau, Changsha

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷 / 12期

关键词：

finite element analysis; prefabricated composite slab; PSP shear connector; push-out test; shear behavior;

D O I：

10.14006/j.jzjgxb.2022.0629

中图分类号：

学科分类号：

摘要：

To investigate the shear behavior of perforated steel plate (PSP) shear connectors in fully prefabricated composite slabs, a series of push-out tests were performed on 15 PSP connectors. The tests aimed to analyze the failure modes and load-slip curves of the PSP shear connectors and explore the effects of steel plate thickness, steel plate strength, opening diameter, concrete strength, number of connectors, and channel type on the shear performance of the PSP connectors. ABAQUS software was employed to establish finite element models of the push-out specimens to verify the accuracy of the model and reveal the working mechanism of the PSP connector. The test results indicate that the PSP connectors exhibite high initial stiffness and shear capacity, and the horizontal segment of load-slip curve of the specimens featuring thin steel plates is longer, showing excellent ductility. However, the characteristic slip of the PSP connectors do not meet the lower limit value of 6 mm specified in Eurocode 4 for ductile connectors, implying that PSP connectors should be classified as rigid connectors. As the thickness of the perforated steel plates increases, the ductility of the PSP connectors decreases while their bearing capacity significantly increases, although the rate of capacity increases gradually slows down. The diameter of the opening has minimal effect on the bearing capacity of the connectors but significantly improves the ductility of the PSP connectors. When the longitudinal spacing of the perforated steel plates is small, the concrete crushing areas between the steel plates in each layer overlap, leading to reduce ductility and shear capacity of the connectors. Based on the push-out tests and finite element analysis, a formula was proposed to calculating the shear capacity of a single PSP connector, and the calculated values showed good agreement with the test results. © 2023 Science Press. All rights reserved.

引用

页码：194 / 205

页数：11

共 27 条

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