水平地震力作用下钢筋混凝土异形柱框架结构设计
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摘要
由于钢筋混凝土异形柱截面几何性质的特殊性,需考虑不同地震作用方向下结构的反应。结合工程实例,对钢筋混凝土异形柱框架结构在不同方向的水平地震作用下进行受力分析,对自振周期、轴压比、柱底层剪力和层间位移角进行分析。结果表明,L形异形柱方向性较强,应考虑45°和-45°地震作用方向的计算,同时应调整异形柱平面布置形式,使其刚度中心尽量与形心重合,以此减小扭转效应对结构的不利影响。
Due to the particularity of geometric property of reinforced concrete special-shaped cross-section,structural response in different horizontal seismic directions should be taken into account.According to an example,reinforced concrete structure with special-shaped columns was analyzed in different horizontal seismic directions.Natural period of vibration,axial compressive ratio,bottom shear of column and drift angle were also researched.The result demonstrates the special-shaped column of L section has stronger direction.The directions of 45 degree and 45 negative degree should be taken into account.Plane placement of special-shaped columns should be adjusted that its center of rigidity can be close to centroid.So it can deminish structure negative influence resulted from torsion effect.
Due to the particularity of geometric property of reinforced concrete special-shaped cross-section,structural response in different horizontal seismic directions should be taken into account.According to an example,reinforced concrete structure with special-shaped columns was analyzed in different horizontal seismic directions.Natural period of vibration,axial compressive ratio,bottom shear of column and drift angle were also researched.The result demonstrates the special-shaped column of L section has stronger direction.The directions of 45 degree and 45 negative degree should be taken into account.Plane placement of special-shaped columns should be adjusted that its center of rigidity can be close to centroid.So it can deminish structure negative influence resulted from torsion effect.
引文
[1]中华人民共和国建设部.混凝土异形柱结构技术规程(JGJ149—2006)[S].北京:中国建筑工业出版社,2006.
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[3]天津大学,天津市新型建材建筑设计研究院.天津市大开间住宅钢筋混凝土异形柱框轻结构技术规程(DB29-16—98)[S].北京:中国建筑工业出版社,1998.
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[7]杨正海,潘文,何玲,等.水平地震作用方向对异形柱结构整体分析的影响[J].世界地震工程,2006,22(3):160-165.YANG Zheng-hai,PAN Wen,HE Ling,et al.Effectof seismic aclion directions on global analysis of struc-tures with special-shaped columns[J].World Earthquake Engineering,2006,22(3):160-165.
[8]宋穗徽.混凝土异形柱框架结构的设计探讨[J].工程与建设,2007,21(1):39-41.SONG Sui-hui.Dsign of concrete structures with ir-regular columns[J].Engineering and Construction,2007,21(1):39-41.
[9]姜洁.浅谈异形柱框架轻质墙结构设计体会[J].安徽建筑,2007,14(2):61-62.JIANG Jie.Structural design of special-shaped col-umn structure[J].Anhui Architecture,2007,14(2):61-62.
[2]江苏省工程建设标准站.江苏省钢筋混凝土异形柱框架结构技术规程(DB32/512—2002))[S].南京:江苏建筑委员会,2002.
[3]天津大学,天津市新型建材建筑设计研究院.天津市大开间住宅钢筋混凝土异形柱框轻结构技术规程(DB29-16—98)[S].北京:中国建筑工业出版社,1998.
[4]许卫宏,张勇.关于异形柱结构设计中常见问题的探讨[J].有色金属设计,2006,33(3):26-31.XU Wei-hong,ZHANG Yong.Treatment of commonissues on structural design of special-shape[J].Non-ferrous Metials Design,2006,33(3):26-31.
[5]中国建筑科学研究院.高层建筑混凝土结构技术规程(JGJ3—2002)[S].北京:中国建筑工业出版社,2002.
[6]余时波.钢筋混凝土异形柱结构设计浅析[J].四川建筑科学研究,2006,32(2):46-48.YU Shi-bo.Analysis of design of reinforced concretestructures with special-shaped columns[J].SichuanBuilding Science,2006,32(2):46-48.
[7]杨正海,潘文,何玲,等.水平地震作用方向对异形柱结构整体分析的影响[J].世界地震工程,2006,22(3):160-165.YANG Zheng-hai,PAN Wen,HE Ling,et al.Effectof seismic aclion directions on global analysis of struc-tures with special-shaped columns[J].World Earthquake Engineering,2006,22(3):160-165.
[8]宋穗徽.混凝土异形柱框架结构的设计探讨[J].工程与建设,2007,21(1):39-41.SONG Sui-hui.Dsign of concrete structures with ir-regular columns[J].Engineering and Construction,2007,21(1):39-41.
[9]姜洁.浅谈异形柱框架轻质墙结构设计体会[J].安徽建筑,2007,14(2):61-62.JIANG Jie.Structural design of special-shaped col-umn structure[J].Anhui Architecture,2007,14(2):61-62.
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