TY - JOUR
T1 - Analytical Study on Internal Force Transfer of Perfobond Rib Shear Connector Group Using a Nonlinear Spring Model
AU - Zhang, Qinghua
AU - Jia, Donglin
AU - Bao, Yi
AU - Cheng, Zhenyu
AU - Bu, Yizhi
AU - Li, Qiao
N1 - Publisher Copyright:
© 2017 American Society of Civil Engineers.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - The perfobond rib (PBL) shear connector group composed of multiple layers of PBL shear connectors has been proven to be one of the most effective load-transferring components and is widely used in cable-stayed bridges. In this study, an analytical method was developed to analyze the internal force transfer of a PBL shear connector group, based on the nonlinear equivalent stiffness of key components, which include the shear connectors, perforated steel plate, and concrete base. Explicit analytical expressions of the internal force distribution among different layers of shear connectors were derived and validated against experimental results. Uneven force distributions resulting from the different equivalent stiffnesses of different layers of shear connectors were demonstrated. Key factors influencing the load distribution include the stiffness of the perforated steel plate, concrete base, and shear connectors. The unevenness of the load distribution was found to gradually decrease with the development of plastic deformation of the shear connectors. The proposed method offers an efficient and practical approach to investigating the mechanical behavior of a PBL shear connector group and quantifying its property of uneven internal force distribution.
AB - The perfobond rib (PBL) shear connector group composed of multiple layers of PBL shear connectors has been proven to be one of the most effective load-transferring components and is widely used in cable-stayed bridges. In this study, an analytical method was developed to analyze the internal force transfer of a PBL shear connector group, based on the nonlinear equivalent stiffness of key components, which include the shear connectors, perforated steel plate, and concrete base. Explicit analytical expressions of the internal force distribution among different layers of shear connectors were derived and validated against experimental results. Uneven force distributions resulting from the different equivalent stiffnesses of different layers of shear connectors were demonstrated. Key factors influencing the load distribution include the stiffness of the perforated steel plate, concrete base, and shear connectors. The unevenness of the load distribution was found to gradually decrease with the development of plastic deformation of the shear connectors. The proposed method offers an efficient and practical approach to investigating the mechanical behavior of a PBL shear connector group and quantifying its property of uneven internal force distribution.
KW - Analytical approach
KW - Nonlinear equivalent stiffness
KW - Perfobond rib (PBL) shear connector group
KW - Steel-concrete composite bridge
KW - Uneven internal force distribution
UR - http://www.scopus.com/inward/record.url?scp=85027577765&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85027577765&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)BE.1943-5592.0001123
DO - 10.1061/(ASCE)BE.1943-5592.0001123
M3 - Article
AN - SCOPUS:85027577765
SN - 1084-0702
VL - 22
JO - Journal of Bridge Engineering
JF - Journal of Bridge Engineering
IS - 10
M1 - 04017081
ER -