(1 江苏大学理学院  镇江 212013 ；2 江苏大学基建处  镇江 212013)
【提要】  根据建筑物造型的要求，江苏大学体育馆的屋盖网架设计成了弧形，造型别致，但是对网架的设计，尤其是抗震设计提出了更高的要求。在网架设计相关资料的基础上，对其进行了抗震分析。应用振型分解反应谱法和时程分析法对网架结构分别在小震、大震下的地震反应进行了二阶段设计与验算，分析表明网架满足强度、刚度及抗震设防要求。
【关键词】  弧形网架  抗震分析  动力特性
Dynamic Characteristic Research of Archshaped Space Truss/Cai Jianliang1,Su Jun1,Liu Ronggui2(1 Faculty of Science,Jiangsu University,Zhenjiang 212013，China； 2 Capital Construction Department,Jiangsu University,Zhenjiang 212013,China)
Abstract:According to the architecture style of the gymnasium in Jiangsu University,the roof truss is designed arcshape.It puts a higher request in the design,especially in the seismic design.Two design stages of seismic analysis are presented and the response spectrum method and the time history method are applied to calculate such truss on the base of the related data of designing.The results show that the roof truss can meet the demand of strength and stiffness,and the aseismic target can be reached.
Keywords:archshaped space truss;antiearthquake analyzing;dynamic characteristic