Size effect on the shear capacity of headed studs

Dönmez, Abdullah

doi:10.1177/1369433220969030

Cited by 11 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is worth noting that the height is determined after the clearance between two vertical plates. In order to keep a reasonable flexibility of studs Dönmez (2021), the stud diameter is determined as 10 mm, corresponding to a height-to-diameter ratio of five and consistent with the value in the previous static test (Gao et al, 2021). The vertical plate and stud are joined by full penetration welding.…”

Section: Test Programmementioning

confidence: 99%

Cyclic performance of prefabricated composite shear stud connectors for accelerated bridge construction

Li,

Heng,

Zhou

et al. 2023

Advances in Structural Engineering

View full text Add to dashboard Cite

This study examines the cyclic shear-slip performance of a novel prefabricated composite shear stud (PCSS) connector designed for accelerated bridge construction (ABC) of composite structures. An in-depth experimental procedure is employed involving the design and fabrication of four push-out specimens with two different stud configurations. The specimens are then tested under both monotonic and cyclic-to-monotonic loading protocols. Upon completion of the testing phase, a meticulous inspection of the fractography is conducted to delineate and qualify the failure mode of the PCSS connectors. Simultaneously, a comprehensive shear-slip curve is derived from the measured data, enabling a detailed analysis over the mechanical performance. Furthermore, the study calculates a series of deformation-associated indicators from the shear-slip curve, effectively quantifying the ductility, recoverability, and capacity of the PCSS. The test results accentuate a well-deformed and ductile failure mode of the tested PCSS specimens, marked by the stud fracture and crushing of surrounding concrete. This could be attributed to the constraint of vertical plates of the PCSS on the concrete, which improves the capacity and recoverability of the PCSS. Whereas, the performance of the PCSS is also notably influenced by the group nail effect, for which the ductility and per-stud capacity degrade with the increase in the number of studs. Especially, the PCSS specimen exhibits full elastic-to-plastic hysteresis loops under cyclic loads, together with the satisfied ductility, implying an excellent potential of the PCSS to dissipate energy under impact loads. In addition, the PCSS displays a robust stiffness across different cyclic loading blocks. Hence, satisfactory post-damage ductility has still been observed in the PCSS under the monotonic loading after the cyclic loading. In conclusion, this work elucidates the superiority of the PCSS in terms of capacity, ductility, and recoverability, providing a promising basis for their application in the accelerated construction of composite bridges.

show abstract

Section: Test Programmementioning

confidence: 99%

Cyclic performance of prefabricated composite shear stud connectors for accelerated bridge construction

Li,

Heng,

Zhou

et al. 2023

Advances in Structural Engineering

View full text Add to dashboard Cite

show abstract

“…Most current studies have concluded that the model provided in the Chinese design code for calculating shear capacity is conservative, and the design provisions for stud shear connectors are given in the Eurocodes, but none of the formulas take into account the contribution of the concrete strength to the connection: when the concrete strength class is above a certain value, its shear capacity no longer changes [17]. On the basis of the analysis, new formulas or adjustment factors for calculating the shear capacity of grouped stud connectors in design codes have been proposed [34][35][36][37][38]. In summary, the shear performance of single-row stud connectors has been analyzed by the previous literature; however, limited research has been conducted on the force behavior of grouped stud connectors and systematic analyses of the stress performance of grouped stud connectors are also rare.…”

Section: Introductionmentioning

confidence: 99%

Study on the Shear Resistance Performance of Grouped Stud Connectors

Lu,

Huang,

2023

Materials

View full text Add to dashboard Cite

In order to further investigate the grouped stud effect on the force properties of stud connectors, based on the premise that the correctness of the finite element simulation method, in this paper, a finite element model of grouped stud connectors was developed, and the grouped stud effect and its sensitivity factors were analyzed in order to validate the recommended formula for calculating the shear capacity of grouped stud connectors. Results show that the number of grouped stud rows and stud row spacing have a significant influence on the grouped stud effect, and the unevenness coefficient of grouped stud force is negatively correlated with the number of grouped stud rows as well as the grouped stud row spacing. Grouped stud connectors with commonly used concrete grades greater than C50 and height-to-diameter ratios of greater than 4 in steel–concrete composite structural bridges are insensitive to changes in the concrete strength grades and the length of the studs. The direction of force transmission for grouped stud changes with the change in 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 of the tested to calculated value ratio was found to be 1.12, the variance was 0.023, the dispersion was small, and it was 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.

show abstract