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Study on the Shear Resistance Performance of Grouped Stud Connectors
Version 1
: Received: 31 August 2023 / Approved: 1 September 2023 / Online: 1 September 2023 (10:32:52 CEST)
A peer-reviewed article of this Preprint also exists.
Lu, W.; Huang, Y.; Xu, W. Study on the Shear Resistance Performance of Grouped Stud Connectors. Materials 2023, 16, 6625. Lu, W.; Huang, Y.; Xu, W. Study on the Shear Resistance Performance of Grouped Stud Connectors. Materials 2023, 16, 6625.
Abstract
In order to further investigate the study of the effect of grouped stud effect on the force properties of stud connector, based on the premise that the correctness of the finite element simulation method in this paper, finite element modeling of grouped stud connectors was developed, the grouped stud effect and its sensitivity factors were analyzed, to validate the recommended formula for calculating the shear capacity of grouped stud connectors. Results show that the number of grouped stud rows and row spacing have a significant effect on the grouped stud effect, and the unevenness coefficient of grouped stud force Ⅰ is negatively correlated with the number of grouped stud rows as well as the grouped stud row spacing. For grouped stud connectors with commonly used concrete grades greater than C50 and height-to-diameter ratios greater than 4 in steel-concrete composite structural bridges, which is insensitive to changes in the concrete strength grades and the length of the studs. The direction of force transmission for the grouped stud changes with the change of loading angle, and the unevenness coefficient of force for the grouped stud will therefore be reduced. By comparing the results of the 62 existing groups of grouped stud connectors push-out tests, the mean value of the ratio of tested to calculated values is found to be 1.12, the variance is 0.023, the dispersion is small, it is shown that the recommended formula has a high degree of accuracy. The results of this paper can be used as a theoretical basis for the study of the shear stress performance of grouped stud connectors.
Keywords
grouped stud connectors; finite element analysis; grouped stud effect; calculation of shear capacity
Subject
Engineering, Civil Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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