辽阳市某商务综合楼塔楼抗扭转性能分析
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摘要
辽阳市某商务综合楼塔楼是一幢椭圆形平面高层办公楼,其平扭耦联周期比较接近,制约了建筑平面的布置。对其弹塑性抗扭转性能进行了深入对比分析,表明通过合理的结构布置,未设置端跨纵向抗扭转剪力墙的塔楼在多遇和罕遇地震作用下均具有较好的抗扭转性能;分析并验证了塔楼周期比,偏心率与扭转效应θr/u之间的关系,提出规范以周期比作为结构的扭转控制指标有其不够合理的地方,建议考虑直接以θr/u作为扭转效应的主要控制指标。最后,对于平扭耦联周期比较接近结构的抗扭设计提出了一些建议,可供同类工程设计参考。
The Tower of Liaoyang Commercial Complex Building is a flat oval-shaped high-rise office building which has approximate lateral-torsional coupling periods,and its construction plane layout is restricted by the period ratio.A thorough comparative analysis on its elasto-plastic anti-torsion property showed that the tower without anti-torsion longitudinal shearwalls has good resistance to torsion under conventional or rare earthquake action through a rational structural layout.The relationship between period ratio,eccentricity and torsional effect of the tower was analyzed and verified in this paper,it is proposed that it is not reasonable by taking period ratio as a torsional effect control index in the code,and it is suggested that the θr/u can be considered as a main index of torsion control.Finally,some suggestions about anti-torsion design were given for structures which have approximate lateral-torsional coupling periods.
The Tower of Liaoyang Commercial Complex Building is a flat oval-shaped high-rise office building which has approximate lateral-torsional coupling periods,and its construction plane layout is restricted by the period ratio.A thorough comparative analysis on its elasto-plastic anti-torsion property showed that the tower without anti-torsion longitudinal shearwalls has good resistance to torsion under conventional or rare earthquake action through a rational structural layout.The relationship between period ratio,eccentricity and torsional effect of the tower was analyzed and verified in this paper,it is proposed that it is not reasonable by taking period ratio as a torsional effect control index in the code,and it is suggested that the θr/u can be considered as a main index of torsion control.Finally,some suggestions about anti-torsion design were given for structures which have approximate lateral-torsional coupling periods.
引文
[1]中华人民共和国住房和城乡建设部.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Construction of the People’s Republic ofChina.GB 50011—2010 Code for seismic design ofbuildings[S].Beijing:China Architecture andBuilding Press,2010.(in Chinese)
[2]中华人民共和国住房和城乡建设部.JGJ3—2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2010.Ministry of Construction of the People’s Republic ofChina.JGJ 3—2010 Technical specification for con-crete structures of tall buildings[S].Beijing:ChinaArchitecture and Building Press,2010.(in Chinese)
[3]吕西林,周德源,李思明,等.建筑结构抗震设计理论与实例[M].上海:同济大学出版社,2002:57-64.Lu Xilin,Zhou Deyuan,Li Siming,et al.Aseismic De-sign Theory and Practics of Building Structures[M].Shanghai:Tongji University Press,2002:57-64.(inChinese)
[4]徐培福,黄吉峰,韦承基.高层建筑结构在地震作用下的扭转振动效应[J].建筑科学,2000,16(1):1-6.Xu Peifu,Huang Jifeng,Wei Chengji.Response ofTorsional Vibration of Tall Building Structures In-duced by Seismic Action[J].Building Science,2000,16(1):1-6.(in Chinese)
[5]朱慈勉,应丹君.竖向不规则结构Pushover分析的侧向荷载分布模式研究[J].结构工程师,2009,(4):29-34.Zhu Cimian,Ying Danjun.Research on Lateral LoadPatterns in Pushover Analysis of Vertically IrregularStructures[J].Structural Engineers,2009(4):29-44.(in Chinese)
[6]洪婷婷.浅析框架—核心筒结构设计中的几个问题[J].结构工程师,2010,(8):15-20.Hong Tingting.Analysis of Some Issues for Design ofFrame-Shearing Wall Structures[J].Structural Engi-neers,2010,(8):15-20.(in Chinese)
[7]梁淑萍,沈延清.海南省政府高层办公楼超限抗震性能分析[J].结构工程师,2010,(4):89-94.Liang Shuping,Shen Yanqing.Anti-Seismic Perform-ance Analysis of Hainan Provincial Government Build-ing[J].Structural Engineers,2010,(4):89-94.(inChinese)
[8]赵恒晶.带高位转换层的框支剪力墙结构静力弹塑性分析[J].结构工程师,2011,(4):38-44.Zhao Henjing.Pushover Analysis of a Frame-Suppor-ted Shear Wall Structure with High-Level TransferStorey[J].Structural Engineers,2011,(4):38-44.(in Chinese)
[2]中华人民共和国住房和城乡建设部.JGJ3—2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2010.Ministry of Construction of the People’s Republic ofChina.JGJ 3—2010 Technical specification for con-crete structures of tall buildings[S].Beijing:ChinaArchitecture and Building Press,2010.(in Chinese)
[3]吕西林,周德源,李思明,等.建筑结构抗震设计理论与实例[M].上海:同济大学出版社,2002:57-64.Lu Xilin,Zhou Deyuan,Li Siming,et al.Aseismic De-sign Theory and Practics of Building Structures[M].Shanghai:Tongji University Press,2002:57-64.(inChinese)
[4]徐培福,黄吉峰,韦承基.高层建筑结构在地震作用下的扭转振动效应[J].建筑科学,2000,16(1):1-6.Xu Peifu,Huang Jifeng,Wei Chengji.Response ofTorsional Vibration of Tall Building Structures In-duced by Seismic Action[J].Building Science,2000,16(1):1-6.(in Chinese)
[5]朱慈勉,应丹君.竖向不规则结构Pushover分析的侧向荷载分布模式研究[J].结构工程师,2009,(4):29-34.Zhu Cimian,Ying Danjun.Research on Lateral LoadPatterns in Pushover Analysis of Vertically IrregularStructures[J].Structural Engineers,2009(4):29-44.(in Chinese)
[6]洪婷婷.浅析框架—核心筒结构设计中的几个问题[J].结构工程师,2010,(8):15-20.Hong Tingting.Analysis of Some Issues for Design ofFrame-Shearing Wall Structures[J].Structural Engi-neers,2010,(8):15-20.(in Chinese)
[7]梁淑萍,沈延清.海南省政府高层办公楼超限抗震性能分析[J].结构工程师,2010,(4):89-94.Liang Shuping,Shen Yanqing.Anti-Seismic Perform-ance Analysis of Hainan Provincial Government Build-ing[J].Structural Engineers,2010,(4):89-94.(inChinese)
[8]赵恒晶.带高位转换层的框支剪力墙结构静力弹塑性分析[J].结构工程师,2011,(4):38-44.Zhao Henjing.Pushover Analysis of a Frame-Suppor-ted Shear Wall Structure with High-Level TransferStorey[J].Structural Engineers,2011,(4):38-44.(in Chinese)
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