Finite Element Analysis on Shear Performance Large-Diameter Short Stud Connectors in Prefabricated Steel-Thin UHPC Composite Beams

REN Chong; YUAN Yuqing; CHEN Yang

doi:10.13204/j.gyjzG22112702

Volume 53 Issue 11

Nov. 2023

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REN Chong, YUAN Yuqing, CHEN Yang. Finite Element Analysis on Shear Performance Large-Diameter Short Stud Connectors in Prefabricated Steel-Thin UHPC Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(11): 180-187. doi: 10.13204/j.gyjzG22112702

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Finite Element Analysis on Shear Performance Large-Diameter Short Stud Connectors in Prefabricated Steel-Thin UHPC Composite Beams

doi: 10.13204/j.gyjzG22112702

REN Chong¹,
YUAN Yuqing¹,
CHEN Yang^{1,2
,
,}

1. School of Mechanics and Engineering Sciences, Shanghai University, Shanghai 200444, China;
2. State Key Laboratory of Green Building, Xi'an University of Architecture & Technology, Xi'an 710055, China

Received Date: 2022-11-27

Abstract

Abstract

In order to study the shear performance of large-diameter short studs in prefabricated steel-thin UHPC composite beams, push-out test models were established by finite element software ABAQUS, and the effects of stud diameter, hole size, hole shape and the number of studs configured in a single hole on shear performance of specimens were mainly investigated. The results showed that the failure mode of specimens was the shear failure of studs and the local crushing of concrete slabs. The stud diameter was the key factor affecting the shear bearing capacity, the hole size and hole shape had little effect on the shear bearing capacity, and the shear bearing capacity of prefabricated specimens was slightly higher than that of cast-in-place specimens. One large-diameter short stud in a single prefabricated hole could basically be replaced by two small diameter short studs with the same cross-sectional area. In addition, comparing the shear bearing capacity obtained by finite element method with the calculated values of the existed codes, it was found that the calculation values in GB 50010—2017 and EC 4 were conservative in prediction, and the calculation results in AASHTO LRFD was in good agreement with the results from finite element method, and the accuracy of its calculation method was verified by comparing six groups of relevant test data.
- prefabricated structure,
- UHPC thin slab,
- large-diameter short studs,
- finite element,
- shear bearing capacity

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References

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