Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Steel and Composite Structures Volume 58, Number 4, February 25 2026 , pages 437-457 DOI: https://doi.org/10.12989/scs.2026.58.4.437 |
|
|
|
Cracking performance in the negative moment zone of steel-concrete composite beams connected by T-shaped PBL shear connectors |
||
Wenfeng Huang, Yulin Zhan, Wenting Lyu, Hengjia Zhang, Haijun Jiang, Junhu Shao
|
||
| Abstract | ||
| In this study, seven steel and concrete composite beams (SCCBs) connected by T-shaped perfobond rib (PBL) shear connectors were tested to evaluate cracking performance in the hogging moment area. The selected parameters included the type of shear connectors, T-shaped PBL flange widths, and reinforcement ratios. The impact of these parameters on the crack distribution and load-crack width relationship was emphasized in this study. Finally, a modified method was developed that accounts for the T-shaped PBLs to estimate the average crack spacing and maximum crack width in the hogging moment regions of the composite beams. It was found that the flange enhances the cracking performance of the T-shaped PBL connectors. Compared with the composite beam with a flange width of 70 mm, the average crack spacing of 100 mm- and 130 mm-width decreased by 22% and 24%. The reinforcement ratio was a crucial factor affecting the cracking performance of the composite beam. The modified equations provided accurate predictions for the maximum crack width and mean crack spacing, with average calculated-to-test ratios of 0.92 and 1.00, respectively, and standard deviations of 0.11 and 0.09. This research could improve understanding of the cracking performance of SCCBs connected with T-shaped PBLs and provides guidance for crack control design. | ||
| Key Words | ||
| crack spacing; crack width; negative moment zone; steel-concrete composite beam; T-shaped PBL | ||
| Address | ||
| Wenfeng Huang: Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China Yulin Zhan:1)Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China 2)Institute of Civil Engineering Materials, Southwest Jiaotong University, Chengdu 610031, China Wenting Lyu:Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China Hengjia Zhang:Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China Haijun Jiang:Qingdao Municipal Engineering Design and Research Institute Ltd, Qingdao, 266000, China Junhu Shao:1)Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China 2)School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China | ||