青岛游泳跳水馆复杂异形网架结构抗震性及可靠性研究
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摘要
鉴于青岛体育中心游泳跳水馆网架结构为复杂大跨多曲面异形钢屋盖结构和汶川地震带来的灾害,基于大型场馆为大震下最安全场所,考虑4种强地震波对该网架结构进行了罕遇地震分析。同时考虑材料、施工荷载、风荷载、活荷载、静荷载、温度、施工偏差等因素的影响,以结构杆件最大应力作为工程可靠性性能的主要指标,采用ANSYS程序的PDS模块利用蒙特卡罗抽样法对该复杂网架结构进行可靠性分析。分析表明:青岛体育中心游泳跳水馆网架结构在提高1度的情况下抗震性能好,可靠性高,结构设计达到了预定的抗震设防性能目标。
In view of the large and complex roof grid structure of Qingdao Sports Center Swimming and Diving Hall and Wenchuan earthquake disaster,based on the large-scale venues as the safest place for severe earthquakes,considering four kinds of strong seismic waves,the seismic analyses of the grid structure are done.Considering the materials,construction loads,wind loads,live loads,static loads,temperatures,construction deviations and other factors,and the maximum stress of structure bars as the main performance indicator of engineering reliability,the reliability analyses for the complex grid structure are done by the ANSYS program PDS module using Monte Carlo sampling.The results show that Qingdao Sports Center Swimming and Diving Hall has good aseismic performance;that the grid structure for Qingdao Sports Center Swimming and Diving Hall has good reliability.It is show that the design of the steel structure achieves the aseismic performance objectives.
In view of the large and complex roof grid structure of Qingdao Sports Center Swimming and Diving Hall and Wenchuan earthquake disaster,based on the large-scale venues as the safest place for severe earthquakes,considering four kinds of strong seismic waves,the seismic analyses of the grid structure are done.Considering the materials,construction loads,wind loads,live loads,static loads,temperatures,construction deviations and other factors,and the maximum stress of structure bars as the main performance indicator of engineering reliability,the reliability analyses for the complex grid structure are done by the ANSYS program PDS module using Monte Carlo sampling.The results show that Qingdao Sports Center Swimming and Diving Hall has good aseismic performance;that the grid structure for Qingdao Sports Center Swimming and Diving Hall has good reliability.It is show that the design of the steel structure achieves the aseismic performance objectives.
引文
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[7]郭全全,张文芳,吴桂英,刘季康,李珠.中国国家大剧院结构地震分析[J].工程力学,2003,20(2):43―48.Guo Quanquan,Zhang Wenfang,Wu Guiying,Liu Jikang,Li Zhu.Seismic analysis of Grand National Theatre of China[J].Engineering Mechanics,2003,20(2):43―48.(in Chinese)
[8]Lee Dong-Guen,Kim Hyun-Su.Efficient seismic analysis of high-rise building structures with the effects of floor slabs[J].Engineering Structure,ASCE,2002,49:613―623.
[9]Chopra A K.Estimating seismic demands for performance-based engineering of buildings[C]//Proceedings of the13th World Conference on Earthquake Engineering.Canada:Mira Digital Publishing,2004,5007.
[10]张毅刚,曹资.厦门太古飞机工程维修基地网架抗震分析[J].空间结构,1999,5(1):35―42.Zhang Yigang,Cao Zi.Aseismic analysis for space frame of hanger in Xiamen Taigu aircraft maintaince base[J].Spatial Structures,1999,5(1):35―42.(in Chinese)
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