TY - JOUR
T1 - Behaviour of steel beam-column joints subjected to quasi-static and impact loads
AU - Chen, Kang
AU - Zhang, Yao
AU - Tan, Kang Hai
N1 - Funding Information:
The authors gratefully acknowledge the funding provided by Ministry of Home Affairs (MHA), Singapore under the Protective Technology Research Centre , Nanyang Technological University , Singapore. Any opinions, findings and conclusions expressed in this paper are those of the writers and do not necessarily reflect the view of MHA, Singapore.
Publisher Copyright:
© 2021
PY - 2021/8
Y1 - 2021/8
N2 - Currently, there are very few numerical and experimental studies of commonly-used fin plate (or shear tab) and welded unreinforced flanges with bolted web joints subjected to impact loads. In this paper, an experimental programme of these two types of joints was presented and five steel specimens were included. Structural behaviour of both types of joints subjected to quasi-static and impact loads was investigated. Besides, numerical simulations were conducted using the commercial software LS-DYNA. Finite element modelling techniques were introduced and validated against the test results. Using validated numerical models, governing parameters including mass, velocity, momentum and energy were investigated. Energy was found to govern structural behaviour of specimens subjected to impact loads. To evaluate the performance of beam-column joints subjected to impact loads, two indices, namely energy ratio and deformation ratio were proposed based on energy of impactor. It was found that deformation ratio was more appropriate and relevant than energy ratio for evaluating residual deformations and energy absorption.
AB - Currently, there are very few numerical and experimental studies of commonly-used fin plate (or shear tab) and welded unreinforced flanges with bolted web joints subjected to impact loads. In this paper, an experimental programme of these two types of joints was presented and five steel specimens were included. Structural behaviour of both types of joints subjected to quasi-static and impact loads was investigated. Besides, numerical simulations were conducted using the commercial software LS-DYNA. Finite element modelling techniques were introduced and validated against the test results. Using validated numerical models, governing parameters including mass, velocity, momentum and energy were investigated. Energy was found to govern structural behaviour of specimens subjected to impact loads. To evaluate the performance of beam-column joints subjected to impact loads, two indices, namely energy ratio and deformation ratio were proposed based on energy of impactor. It was found that deformation ratio was more appropriate and relevant than energy ratio for evaluating residual deformations and energy absorption.
KW - Column removal scenario
KW - Fin plate
KW - Impact loads
KW - Progressive collapse
KW - WUF-B
UR - http://www.scopus.com/inward/record.url?scp=85105786287&partnerID=8YFLogxK
U2 - 10.1016/j.jcsr.2021.106721
DO - 10.1016/j.jcsr.2021.106721
M3 - Article
AN - SCOPUS:85105786287
SN - 0143-974X
VL - 183
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
M1 - 106721
ER -