Mechanical behaviors of embedded steel column connections between steel coupling beams and concrete shear walls——Experimental study
Li Guoqiang1,2 Gu Fulin2 Sun Feifei1,2
1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;
2. College of Civil Engineering, Tongji University, Shanghai 200092, China
Abstract：To investigate the mechanical behaviors of embedded steel column connection joints between steel coupled beams and concrete shear walls, two groups of weak joints, which are classified as long embedded steel column joints and short embedded steel column joints based on the length of the embedded steel column, are designed and machined Cyclic and static loading tests were carried out on the two groups of joints, and their stiffness and loading capacity were compared, and the failure modes were analyzed. For the long embedded steel column joints, the connection failure is mainly induced by the shear yielding of the web of columns in the joint region. While, for the short embedded steel column joints, the failure arises from the yielding of the horizontal reinforcements in the wall, and the rigid body rotation emerges because no enough restraint can be provided. The bearing capacity of the long embedded steel column joints can be improved by increasing the thickness and the height of the web. While by increasing the diameter or demising the space of the horizontal rebar in the joint region, higher capacity for short embedded steel column joints can be achieved.
