Abstract

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Title:: Influence of Construction Error on Working Performance of Shear Stud

Author(s):: FENG Bo-wen; LIU Yong-jian; PENG Yuan-cheng; SUN Li-peng; LIU Jiang; ZHANG Kai; School of Highway, Chang’an University

Keywords:: bridge engineering; shear stud; construction error; push-out test; shear bearing capacity

Abstract:: In order to study the influence of construction error on working performance of shear studs, through push-out test on three shear stud specimens without error to explore the shear mechanical properties of shear stud, meanwhile, according to the test results, the accuracy of the finite element method was proved. On this basic, considering the non-compactness concrete pouring, insufficient margin of shear stud layout and incline of shear stud in process of construction, and through the finite element simulation and analysis, shear capacity and failure modes of the shear stud under construction error were gained. The results indicate that the failure modes of shear studs without error are all shear failure in the shear stud root, the test values of shear capacity are greater than the calculated values of specifications. The finite element analysis results show that non-compactness concrete pouring near shear stud decreases shear bearing capacity by 60%-70%, insufficient margin of shear stud layout without meeting specifications decreases shear bearing capacity by 27%, and incline of shear stud decreases shear bearing capacity by 41%. The non-compactness concrete pouring is the greatest influence on the shear capacity of shear stud.