Research on Shear Connection Performance of Prefabricated Steel-Concrete Composite Beams

WANG Ning; YAN Jing-liang; LIU Xiao-gang; YUE Qing-rui; ZHENG Ming-zhao

doi:10.13204/j.gyjzg22030601

Volume 52 Issue 9

Sep. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(9): 121-128

WANG Ning, YAN Jing-liang, LIU Xiao-gang, YUE Qing-rui, ZHENG Ming-zhao. Research on Shear Connection Performance of Prefabricated Steel-Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 121-128. doi: 10.13204/j.gyjzg22030601

Citation:

WANG Ning, YAN Jing-liang, LIU Xiao-gang, YUE Qing-rui, ZHENG Ming-zhao. Research on Shear Connection Performance of Prefabricated Steel-Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 121-128. doi: 10.13204/j.gyjzg22030601

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Research on Shear Connection Performance of Prefabricated Steel-Concrete Composite Beams

doi: 10.13204/j.gyjzg22030601

1. Faculty of Urban Construction, Beijing University of Technology, Beijing 100124, China;
2. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China

Received Date: 2022-03-06
Available Online: 2023-02-06

Abstract

Abstract

In order to investigate the performance of shear connections of new profabricated steel-concrete composite beam, 4 types of shear connection construction were designed, including connections with local laminated region, with UHPC (ultra-high performance concrete) post-casting belt, with UHPC slotted post-casting belt and with slotted post-casting belt having post-placed shear rebar. Totally 10 specimens were fabricated and tested by static push-out test. Using the experimental phenomena and test data, the effects of different configurations, including diameter of studs, strength of post-casting concrete, shear slot and shear rebar in slot, on the failure mode, crack mode, load-slip characteristics and ultimate bearing capacity of prefabricated composite beams were analyzed. The results indicated the bearing capacity of prefabricated composite beams increased with the increase of stud diameter and post-casting concrete strength. UHPC post-casting belt configuration and post-placed shear rebars could significantly improve the shear capacity of specimens. The longitudinal shear mechanism of the prefabricated composite beam with post-casted UHPC was different from the traditional composite beam, and the interface between prefabricated slab and post-casted UHPC might become weak area under the interfacial shear force, and fail before studs or the concrete around studs.
- prefabricated steel-concrete beam,
- shear connection,
- local laminated region,
- UHPC,
- shear slot

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References(23)

References

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