doi:10.16186/j.cnki.1673-9787.2023080020

Received:2023-08-09

Revised:2023-11-17

Online Date:2023-12-01

Seismic performance analysis of square steel tubular column-H-beam joints with T-shaped steel connection（Online）

GONG Jian1, LIN Yongle1, WANG Xinwu2, SUN Haisu2, LIU Huanhuan2,3, ZHAO Qi4

1.College of Civil Engineering， Henan Polytechnic University， Jiaozuo  454000， Henan， China;2.Henan International Joint Laboratory of New Civil Engineering Structure，Luoyang Institute of Science and Technology，Luoyang  471023，Henan，China;3.School of Science，Wuhan University of Science and Technology，Wuhan  430070， Hubei，China;4.College of Civil Engineering and Architecture，Henan University of Science and Technology，Luoyang  471023， Henan，China

Abstract:In order to study the seismic characteristics of square steel tubular column-H-shaped steel beam joints connected by one-side bolt and T-shaped steel. The quasi-static test of a 1∶2 scale edge joint was carried out by means of indoor test and numerical simulation analysis， and the numerical simulation was carried out by ABAQUS finite element software to comprehensively analyze the mechanical properties such as bearing capacity， stiffness and energy consumption of the edge joint. The finite element analysis variables are T-shaped steel ribbed， beam flanges with dog bones， and beam webs with circular holes. The results show that the plastic hinges of such edge joints are mainly concentrated on the T-shaped steel of the connecting member， and the stress concentration occurs at the junction of the T-shaped steel web and the flange. In the elastic stage of the test， the joint members resist the external force together. In the plastic stage， the joint damage gradually accumulates to the T-shaped steel， so that the T-shaped steel finally produces plastic failure and failure. The ribbed plate on the T-shaped steel has obvious improvement on the bearing capacity and stiffness of the joint， and has little effect on the energy dissipation capacity. The energy dissipation capacity of the joints can be improved by the dog-bone beam flange and the opening hole beam web， while the bearing capacity and stiffness of the joint are basically unchanged. Among the three variables， the dog-bone beam flange has the most significant effect on the seismic performance of the joint.

Key words:T-shaped steel;one-side bolt;quasi-static;finite element simulation;seismic performance

CLC：TU352.11;TU398.9