Shaking Table Test and Analysis on Seismic Behavior of Steel-Concrete Hybrid Structure for High Rise Buildings

Abstract eng:
The steel-concrete hybrid structures for high rise buildings combine the advantage of concrete and steel structures. And they may resist large wind and strong earthquake actions. This type structure is more and more popular all over the world. Shaking table test on a 15 storey steel-concrete hybrid structure 1/10 model is conducted. Firstly, experimental study on the mechanical properties of copperplates, iron wires and micro-concrete is carried out. Secondly, the dynamic similitude relationship for steel-concrete hybrid structure is designed. Thirdly, the shaking table test is done. Some payloads are put on the floor to fulfill the acceleration similitude law. The El Centro wave is selected as the seismic motion input. About 40 accelerator transducers and 12 displacement transducers are set up on the model to measure the earthquake response in the shaking table test. The shaking table test is conducted in Tongji University, Shanghai, China. The acceleration response and displacement response are gained and analyzed. The seismic behavior such as vibration shape and distribution of the shear force and failure pattern of model are analyzed based on the shaking table test results. The seismic behavior of the prototype structure is analyzed according to the dynamic similitude relationship. It can be concluded that steel-concrete hybrid structure for high rise buildings may be constructed all over the world because of its good seismic performance.

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