咸阳市大剧院双向正交型钢混凝土转换桁架结构设计与分析
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摘要
咸阳市大剧院是高烈度地震区形体复杂的超限高层建筑。通过采用抗震性能设计方法并选用适宜的抗震性能目标,运用双向正交型钢混凝土转换桁架结构布置方案,有效解决了工程中的大悬挑、大跨度、竖向转换等结构难题。采用MIDAS Building程序对主体结构进行罕遇地震作用下的弹塑性时程分析,通过控制桁架构件截面尺寸、调节构件的配筋率及含钢率,有效实现了型钢混凝土转换桁架罕遇地震不屈服的性能目标。
Xianyang Grand Theater is an out-of-code high-rise building with complex shape which is located in high seismic intensity region. By using the method of performance-based seismic design and selecting suitable seismic performance objectives,with the application of structural layout scheme of bidirectional orthogonal steel reinforced concrete transfer trusses,the structure problems such as large cantilever,large span,vertical transfer,etc. were solved effectively. By applying the program of MIDAS Building, the elasto-plastic time-history analysis of major structure under the rare earthquake was studied. And by means of controlling the section size of truss members,regulating the reinforcement ratio and steel ratio of truss members,the seismic performance objective of unyielding design of steel reinforced concrete transfer trusses under rare earthquake was achieved.
Xianyang Grand Theater is an out-of-code high-rise building with complex shape which is located in high seismic intensity region. By using the method of performance-based seismic design and selecting suitable seismic performance objectives,with the application of structural layout scheme of bidirectional orthogonal steel reinforced concrete transfer trusses,the structure problems such as large cantilever,large span,vertical transfer,etc. were solved effectively. By applying the program of MIDAS Building, the elasto-plastic time-history analysis of major structure under the rare earthquake was studied. And by means of controlling the section size of truss members,regulating the reinforcement ratio and steel ratio of truss members,the seismic performance objective of unyielding design of steel reinforced concrete transfer trusses under rare earthquake was achieved.
引文
[1]咸阳市大剧院超限高层抗震设防专项审查报告[R].上海:同济大学建筑设计研究院(集团)有限公司,2013.
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[4]沈朝勇,黄襄云,周福霖,等.带SRC桁架转换层及钢加强层高层建筑抗震性能研究[J].地震工程与工程振动,2004,24(6):83-88.
[5]张涛,毛仁兴,黄卓,等.深圳现代商务大厦桁架转换层结构设计[J].建筑结构,2008,38(8):30-33.
[2]徐伟栋,龚进,洪文明.世博会城市最佳实践区C-1场馆大悬挑结构设计与分析[J].建筑结构,2011,41(2):89-93.
[3]汪大绥,姜文伟,包联进,等.CCTV新台址主楼结构设计与思考[J].建筑结构学报,2008,29(3):1-9.
[4]沈朝勇,黄襄云,周福霖,等.带SRC桁架转换层及钢加强层高层建筑抗震性能研究[J].地震工程与工程振动,2004,24(6):83-88.
[5]张涛,毛仁兴,黄卓,等.深圳现代商务大厦桁架转换层结构设计[J].建筑结构,2008,38(8):30-33.
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