Shaking Table Test and Analysis of Core-Tube Partial Suspension Structure

Abstract eng:
The core-tube partial suspension structure is proposed in the paper. It takes advantage of the virtues of both the core-tube suspension structure that is of good earthquake resistant performance and the frame core-tube structure that has more lines of seismic resistance, which is the structure of core-tube suspension with dampers and pure concrete blocks between core tube and suspension floors in upper storeys of sharp seismic responses and frame core-tube in bottom storeys of less seismic responses. The system can achieve effective control to earthquake responses. A shaking table test of a 1/10 reduced scale model of this structure is described in the article. The test procedures went through elastic, elasto-plastic stages of structure. The dynamical model is set up and dynamical characteristics and earthquake responses of the structure under the El Centro wave are analyzed. The experimental results show the structure has good seismic behaviors. Then, the elastic and elasto-plastic time-history analyses of the structure are carried out by SAP2000 and the simulation results fit well with that of experiment.

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