基于性能的钢管混凝土空间筒体结构抗震设计
|
摘要
钢管混凝土空间筒体结构是将钢管混凝土柱通过环状桁架拉结形成中空筒状的高耸特种结构,在化肥厂的建造中得到了广泛的应用,但其抗震性能的研究目前仍属空白。以应用比较广泛的110m高,17m直径的典型造粒塔为工程背景,对此类结构进行了基于性能的抗震设计研究。采用三维弹塑性有限元模型对结构进行了罕遇地震作用下的动力弹塑性时程分析,同时用Push-over方法进行静力弹塑性分析,得到了罕遇地震作用下梁柱塑性区的主要分布。结果表明,楼梯间钢柱和环状桁架对其抗震性能影响较大,此类结构抗震性能一般较好。最后根据结果提出了相应的抗震设计对策,可为同类构筑物设计提供参考。
Spatial grid tube CFT frame is a hollow high special structure which is constructed by concrete-filled steel tube columns bonded by annular truss and widely used for fertilizer plant.Recently,there are almost no seismic performance research on this kind of structure in China.Taking a typical prilling tower of 110 m high and 17 m diameter as an engineering background,a three-dimensional elastoplastic finite element model was established,and then the elastoplastic time history analysis and push-over analysis of the structure under rare earthquake action were carried out.The deformation characteristics and plastic zone distribution on beams and columns of staircase were deduced.The results show that the steel column of the staircase and the annular truss have considerable influence on its seismic performance,and this kind of the structure has a good seismic performance in general.Some advanced earthquake-resistance methods are provided to give a reference to design of the similar structures.
Spatial grid tube CFT frame is a hollow high special structure which is constructed by concrete-filled steel tube columns bonded by annular truss and widely used for fertilizer plant.Recently,there are almost no seismic performance research on this kind of structure in China.Taking a typical prilling tower of 110 m high and 17 m diameter as an engineering background,a three-dimensional elastoplastic finite element model was established,and then the elastoplastic time history analysis and push-over analysis of the structure under rare earthquake action were carried out.The deformation characteristics and plastic zone distribution on beams and columns of staircase were deduced.The results show that the steel column of the staircase and the annular truss have considerable influence on its seismic performance,and this kind of the structure has a good seismic performance in general.Some advanced earthquake-resistance methods are provided to give a reference to design of the similar structures.
引文
[1]徐培福,戴国莹.超高层建筑结构基于性能的设计抗震设计研究[J].土木工程学报,2005,38(1):1-10.XU Peifu,DAI Guoyin.Performance-based seismic design of tall building structures beyond The Code-Specification.[J].China Civil EngineeringJournal,2005,38(1):1-10.
[2]蔡绍怀.现代钢管混凝土结构(修订版)[M].北京:人民交通出版社,2007.CAI Shaohuai.Moden steel confined concrete structures[M].Beijing:China Communications Press,2007.
[3]陈绍蕃.钢结构设计原理(第三版)[M].北京:科学出版社,2005.CHEN Shaofan.Principles of steel structure design[M].Beijing:Science Press,2005.
[4]陈骥.钢结构稳定-理论与设计(第二版)[M].北京:科学出版社,2006.CHEN Ji.Stability of steel structures-theory and design[M].Beijing:Science Press.
[5]徐培福,傅学怡,王翠坤,等.复杂高层建筑结构设计[M].北京:中国建筑工业版社,2005.XU Peifu,FU Xueyi,WANG Cui kun,et al.Design of complex structural tall buildings[M].Beijing:China Building Industry Publishing House,2005.
[6]钱家茹,纪晓东.国家体育场大跨钢结构罕遇地震性能分析[J].建筑结构学报,2007,28(2):17-25.QIAN Jiaru,JI Xiaodong.Seismic behavior analysis of large-span steel structure of the National Stadium under severe earthquake[J].Journal ofBuilding Structures.2007,28(2):17-25.
[7]白国良,楚留声.型钢混凝土框架静力非线性分析塑性铰参数研究[J].西安建筑科技大学学报,2007,39(6):757-761.BAI Guolian,CHU Liusheng.Determination of plastic hinge property for steel reinforced concrete frame in nonlinear static analysi[J].Journal ofXi'an University of Architecture&Technology,2007,39(6):757-761.
[8]郝际平,王迎春.钢结构造粒塔的设计[J].石油与化工设备,2007,(4):36-38.HAO Jiping,WANG Yingchun.Design of steel tower granulation[J].Oil and Chemical Equipment,2007,(4):36-38.
[9]Chen W F,Kim S E.LRFD steel design using advanced analysis[M].Boca Raton,FL,CRC Press,1997.
[2]蔡绍怀.现代钢管混凝土结构(修订版)[M].北京:人民交通出版社,2007.CAI Shaohuai.Moden steel confined concrete structures[M].Beijing:China Communications Press,2007.
[3]陈绍蕃.钢结构设计原理(第三版)[M].北京:科学出版社,2005.CHEN Shaofan.Principles of steel structure design[M].Beijing:Science Press,2005.
[4]陈骥.钢结构稳定-理论与设计(第二版)[M].北京:科学出版社,2006.CHEN Ji.Stability of steel structures-theory and design[M].Beijing:Science Press.
[5]徐培福,傅学怡,王翠坤,等.复杂高层建筑结构设计[M].北京:中国建筑工业版社,2005.XU Peifu,FU Xueyi,WANG Cui kun,et al.Design of complex structural tall buildings[M].Beijing:China Building Industry Publishing House,2005.
[6]钱家茹,纪晓东.国家体育场大跨钢结构罕遇地震性能分析[J].建筑结构学报,2007,28(2):17-25.QIAN Jiaru,JI Xiaodong.Seismic behavior analysis of large-span steel structure of the National Stadium under severe earthquake[J].Journal ofBuilding Structures.2007,28(2):17-25.
[7]白国良,楚留声.型钢混凝土框架静力非线性分析塑性铰参数研究[J].西安建筑科技大学学报,2007,39(6):757-761.BAI Guolian,CHU Liusheng.Determination of plastic hinge property for steel reinforced concrete frame in nonlinear static analysi[J].Journal ofXi'an University of Architecture&Technology,2007,39(6):757-761.
[8]郝际平,王迎春.钢结构造粒塔的设计[J].石油与化工设备,2007,(4):36-38.HAO Jiping,WANG Yingchun.Design of steel tower granulation[J].Oil and Chemical Equipment,2007,(4):36-38.
[9]Chen W F,Kim S E.LRFD steel design using advanced analysis[M].Boca Raton,FL,CRC Press,1997.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心