TY - JOUR
T1 - Transverse fatigue behaviour of steel-UHPC composite deck with large-size U-ribs
AU - Liu, Yiming
AU - Zhang, Qinghua
AU - Meng, Weina
AU - Bao, Yi
AU - Bu, Yizhi
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/2/1
Y1 - 2019/2/1
N2 - With increasing traffic volumes, fatigue of orthotropic steel decks (OSDs) has become a critical issue in recent years. In this study, an innovative composite deck composed of large-size U-ribs, a thin ultra-high-performance concrete (UHPC) layer and headed studs is proposed to enhance the fatigue properties of OSDs. Experimental and numerical approaches were combined to investigate the transverse fatigue behaviour of the proposed composite deck. A large-scale composite deck specimen was fabricated and tested under cyclic loading. The experimental results revealed the progressive failure process of the composite deck. The effects of damage accumulation in UHPC layer and headed studs on the mechanical behaviour of steel-UHPC composite deck were evaluated. The results indicated that the mechanical degradation in the composite deck system accelerated the damage accumulation in the fatigue-prone details of OSDs. It is necessary to consider the effects of mechanical degradation in fatigue resistance evaluation.
AB - With increasing traffic volumes, fatigue of orthotropic steel decks (OSDs) has become a critical issue in recent years. In this study, an innovative composite deck composed of large-size U-ribs, a thin ultra-high-performance concrete (UHPC) layer and headed studs is proposed to enhance the fatigue properties of OSDs. Experimental and numerical approaches were combined to investigate the transverse fatigue behaviour of the proposed composite deck. A large-scale composite deck specimen was fabricated and tested under cyclic loading. The experimental results revealed the progressive failure process of the composite deck. The effects of damage accumulation in UHPC layer and headed studs on the mechanical behaviour of steel-UHPC composite deck were evaluated. The results indicated that the mechanical degradation in the composite deck system accelerated the damage accumulation in the fatigue-prone details of OSDs. It is necessary to consider the effects of mechanical degradation in fatigue resistance evaluation.
KW - Failure mechanism
KW - Fatigue performance
KW - Large-size U-ribs
KW - Model test
KW - Orthotropic steel deck (OSD)
KW - Steel-UHPC composite deck
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U2 - 10.1016/j.engstruct.2018.11.057
DO - 10.1016/j.engstruct.2018.11.057
M3 - Article
AN - SCOPUS:85057274550
SN - 0141-0296
VL - 180
SP - 388
EP - 399
JO - Engineering Structures
JF - Engineering Structures
ER -