Details

Autor(en) / Beteiligte

• Zhang, Qinghua
• Jia, Donglin
• Bao, Yi
• Cheng, Zhenyu
• Xiao, Lin
• Bu, Yizhi

Titel

Internal force transfer effect-based fatigue damage evaluation for PBL shear connector groups

Ist Teil von

• Journal of constructional steel research, 2018-09, Vol.148, p.469-478

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This study presents an analytical method to analyze fatigue damage in Perfobond rib (PBL) shear connector group under cyclic loading. A step-by-step calculation procedure is proposed and implemented to quantify the fatigue damage in PBL shear connector groups, considering the uneven shear force distribution at different layers of shear connectors. The fatigue life of the PBL shear connector group is evaluated, and the effect of uneven shear force distribution on fatigue life is studied. The investigation results indicate the coupling effect between fatigue damage and internal force distribution, and reveal that the fatigue damage indices are different at different layers of a PBL shear connector group. The uneven force distribution reduces the fatigue life of PBL shear connector group, and the unevenness decreases with the development of fatigue damage. The degree of fatigue damage in each layer of the PBL shear connectors is sensitive to the upper load level. The proposed approach offers an analytical tool for evaluating the fatigue behavior of PBL shear connector groups. •An analytical method is developed to analyze fatigue damage in PBL shear connector group under cyclic loading.•A formula is derived to calculate single PBL shear connector’s fatigue damage under any load range and cyclic numbers.•The coupling process between fatigue damage and internal force distribution is revealed in PBL shear connector group.•Fatigue life of PBL shear connector group is evaluated by the analytical model.•The effect of uneven force distribution on fatigue damage accumulation is explored.