中文摘要：

针对某网架结构,建立了非隔震、采用传统水平隔震支座和三维隔震支座的结构有限元模型,并分别对其进行自振特性分析和爆炸地震、天然地震输入下的时程分析,对比分析了各工况下结构的动力响应。结果表明：爆炸地震波具有频带宽、高频成分丰富和持时短的特点;天然地震作用下网架结构的位移和内力响应要远大于爆炸地震作用下的结构响应;采用水平隔震支座和三维隔震支座后明显延长了结构的自振周期,三维隔震支座对结构高阶振型周期的延长效果更加明显;相比水平隔震支座,三维隔震支座的隔震效果更好、通用性更强。

英文摘要：

The three finite element models were established for a space truss structure,which were non-isolated structure,traditional horizontal isolation structure and three-dimensional isolation structure. The natural vibration characteristics of the three models were analyzed. And the dynamic responses of the three models were compared under explosion seism and natural seism respectively. The results showed that the explosion seismic waves had the characteristics of wide frequency range, rich high-frequency contents and short duration. The responses of displacement and internal force of the space truss structure under natural seismic waves were larger than the structural responses under explosion seismic waves. The natural vibration period of the structure was obviously prolonged by using horizontal and three-dimensional isolation bearings and three-dimensional isolation bearings could more effectively prolong the natural vibration period of high order. Compared with the horizontal isolation bearing,the three-dimensional isolation bearing had better isolation effect and wider applicability.