【摘要】 本文首先通过对液化天然气球罐放松竖向约束的简化模型的地震时程分析,了解球罐在放松竖向约束的情况下地震作用的变化。接着,对耗能减震所选用的软钢阻尼器进行了考察其滞回性能的数值模拟。最后,提出耗能柱脚的构造形式,并指明耗能柱脚可以在震后快速更换耗能构件并重新投入使用的特点。更多还原

【Abstract】 Firstly,this paper mainly investigates the change in the seismic response of the LNG spherical tanks with uplifting effect by conducting a time-history analysis on a simplified tank model.Next,hysteretic performance of the mild steel damper chosen for energy dissipation is investigated by numerical simulation.At last.the structural form of seismic energy dissipating column base is presented.The column base can be replaced rapidly after an earthquake and the structure can be put into use again.更多还原