TY - JOUR
T1 - New connection system for circular tubed reinforced concrete columns and steel beams
AU - Zhou, Xuhong
AU - Liu, Jiepeng
AU - Cheng, Guozhong
AU - Gan, Dan
AU - Chen, Y. Frank
N1 - Funding Information:
The research reported in this paper is supported by the National Natural Science Foundation of China (No. 51438001 , No. 51622802 ), to which the authors are very grateful.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/7/1
Y1 - 2020/7/1
N2 - A new connection system for circular tubed reinforced concrete (TRC) columns and steel beams is proposed, where crossing diaphragms are introduced to withstand the moment at beam ends and interior diaphragms are added to withstand the shear at the interfaces between beam and joint. Interior diaphragms are more convenient for placement of curtain walls and architecturally desirable. The joint tube is used to improve the joint strength and the holes through the interior diaphragms are pre-drilled at the locations where the longitudinal reinforcing steel bars in column pass through. This relatively new configuration represents a diaphragm-through connection between circular TRC column and steel beam. In this study, the quasi-static reversed cyclic loading test was performed on five one-third scaled specimens and the feasibility of proposed connection was verified. A finite element model was then developed and validated with the experimental results, where the peak lateral load was accurately obtained. Furthermore, a shear-resistance model for the connections is suggested, from which theoretical formulas for predicting the shear resistance of connection are established.
AB - A new connection system for circular tubed reinforced concrete (TRC) columns and steel beams is proposed, where crossing diaphragms are introduced to withstand the moment at beam ends and interior diaphragms are added to withstand the shear at the interfaces between beam and joint. Interior diaphragms are more convenient for placement of curtain walls and architecturally desirable. The joint tube is used to improve the joint strength and the holes through the interior diaphragms are pre-drilled at the locations where the longitudinal reinforcing steel bars in column pass through. This relatively new configuration represents a diaphragm-through connection between circular TRC column and steel beam. In this study, the quasi-static reversed cyclic loading test was performed on five one-third scaled specimens and the feasibility of proposed connection was verified. A finite element model was then developed and validated with the experimental results, where the peak lateral load was accurately obtained. Furthermore, a shear-resistance model for the connections is suggested, from which theoretical formulas for predicting the shear resistance of connection are established.
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U2 - 10.1016/j.engstruct.2020.110666
DO - 10.1016/j.engstruct.2020.110666
M3 - Article
AN - SCOPUS:85083568897
SN - 0141-0296
VL - 214
JO - Structural Engineering Review
JF - Structural Engineering Review
M1 - 110666
ER -