立式钢制圆柱储液容器基底隔震的地震动仿真计算

Earthquake simulation calculation analysis of base rubber isolation systems for the cylindrical storage tanks

对弹性圆柱钢制储液容器的地震响应建立了振动分析方程 ,以隔震基频和阻尼为基量 ,采用数值仿真计算进行定量分析 .分析了隔震频率和阻尼对基底剪力和倾覆弯矩的影响 ,指出了对立式钢制圆柱储液容器进行隔震设计时应考虑液固耦合和液体晃动 (长周期 )效应 ,给出了隔震装置设计需要的隔震周期和阻尼的适用范围 .

The measure of isolation is used to reduce earthquake response of steel cylindrical tank, the real problem is complicated than it in civil engineering. Not only fluid\|solid coupling, but also the effect of fluid shaking (long period) are considered. We deal with the problem of earthquake response for flexibility stand cylindrical steel storage tank. Simple mechanical analysis model is given, vibration analysis equations of isolation system for stand storage tank are established. Numerical simulation calculation is adopted and quantitative analysis is made. The effects of frequency and damp to shearing force and overturning moments are put up. The problem can be considered in isolation design for stand cylindrical steel storage tank in question. Applied ranges of the isolation period and damp for the isolation systems are given.