偏心隔震结构扭转地震作用的简化计算公式

Simplified formulae of torsional seismic actions for base-isolated eccentric structures

以隔震结构偏心参数对结构地震反应的影响分析结果为依据,分析了偏心参数对结构转动方向地震作用的影响,利用最小二乘法拟合,提出了计算偏心隔震结构转动方向地震作用的简化计算公式。当给定结构相应的偏心参数后,利用给出的简化公式能较方便地计算出上部结构扭转加速度,为计算偏心隔震结构的地震作用提供了简便、快捷和准确的方法。

Based on a lot of numerical analysis on different soil sites, simplified formulae of torsional seismic actions for base-isolated eccentric structures are presented with the earthquake actions. It is shown that the proposed formulae are of the good accuracy in terms of the comparisons. Therefore, the convenient and simplified method is suitable for the implementations to structural designs for the base-isolated eccentric structures with the rubber pads under the action of earthquakes.