SMA-滚动隔震火炬塔的地震反应分析

Seismic response analysis of torch tower with SMA-rolling bearings

提出一种新的SMA-滚动隔震支座,建立了该支座的恢复力模型,并应用于火炬塔基础部位.研究了该隔震体系在E l-Centro地震波作用下的时程反应,并与非隔震的火炬塔结构体系进行了对比研究.计算结果表明,SMA-滚动隔震支座隔震体系的质量层最大绝对加速度可减少86.6%,上拔力减少了72.9%,轴力最大可减少87.2%.

A new SMA-rolling isolation bearing and its restoring force model is proposed. The new bearing is installed in the base of the torch tower. The time-history analysis of the seismic responses of the isolation system is performed under El-Centro seismic curve. The results are compared with the non-isolated system. According to the outcomes, the maximum absolute acceleration of the mass layer may decrease by 86.6% due to the SMA- rolling bearing, the overturn force can be cut by 72.9% and the axis force can be reduced by 87.2%.