内罐泄漏条件下LNG储罐外罐地震响应分析

摘要

针对内罐泄漏条件下LNG(液化天然气)储罐混凝土外罐,采用不同场地、不同方向地震波对其进行地震响应分析,得出地震波波形及方向对储罐外罐的地震响应的影响.结果表明:坚硬场地垂直向地震波对外罐加速度的影响较小,其他场地垂直向地震波对外罐的加速度影响较大,特别是软弱场地的影响最大；垂直向地震波对外罐有效应力的影响很小.%Seismic response analysis on outer wall of LNG storage tank under the inner tank leakage conditions is performed. Influence of different earthquake waveforms and the directions on tank's seismic respond is discussed. The results show that the vertical seismic wave in hard field has less influence on acceleration distribution, specially, the however vertical seismic wave in other locations has great influence on acceleration distribution specially, the impact is greatest in the soft location. The vertical seismic wave has very small effect on effective stress of the outer wall.