空腹桁架式连体结构动力性能分析
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摘要
为找出适合于大跨高层连体建筑的连接体型式,采用静力和地震反应谱分析法对一实际工程采用普通空腹桁架,混合空腹桁架、托梁及吊梁这4种方案进行了计算分析。结果表明:和普通空腹桁架方案相比,混合空腹桁架方案能明显减小端部上、下弦杆的弯矩和剪力峰值及调整结构刚度。与托梁及吊梁方案比较,混合空腹桁架方案的楼层刚度、质量分布比较均匀,具有良好的抗震性能、延性和整体性,支撑处结构的应力集中现象得到明显改善。因此建议在大跨高层连体建筑中,连接体选型采用混合空腹桁架为宜。
To find the best type of connecting bodies for a tall long span connected building,static and seismic methods are used to analyze a practical building,which adopts the common open-web truss,the mixed open-web truss,the lower transfer girder and the upper suspension beam respectively.In contrast to the common open-web truss scheme,the mixed open-web truss structure can obviously reduce the maximum moment and shear of the brace,and adjust the stiffness of the structure.In contrast to the upper suspension beam and the lower transfer beam girder schemes,the mixed open-web truss structure has better seismic performance,ductility and integrity,furthermore its mass distribution and floor stiffness are very even,the stress concentration is not obvious.It is suggested to use the mixed open-web truss in the selection of the connecting body of the tall long span connected building.
To find the best type of connecting bodies for a tall long span connected building,static and seismic methods are used to analyze a practical building,which adopts the common open-web truss,the mixed open-web truss,the lower transfer girder and the upper suspension beam respectively.In contrast to the common open-web truss scheme,the mixed open-web truss structure can obviously reduce the maximum moment and shear of the brace,and adjust the stiffness of the structure.In contrast to the upper suspension beam and the lower transfer beam girder schemes,the mixed open-web truss structure has better seismic performance,ductility and integrity,furthermore its mass distribution and floor stiffness are very even,the stress concentration is not obvious.It is suggested to use the mixed open-web truss in the selection of the connecting body of the tall long span connected building.
引文
[1]黄坤耀,孙炳楠,楼文娟.连体刚度对双塔连体高层建筑地震响应的影响[J].建筑结构学报,2001,22(3):21-26.Huang Kunyao,Sun Bingnan,Lou Wenjuan.Influence of the connection stiffness on seismic response of the double-tower connected tall buildings[J].Journal of Building Structures,2001,22(3):21-26.
[2]刘绍峰,施卫星.联合结构减震控制的研究和应用[J].世界地震工程,2006,22(4):95-98.Liu Shaofeng,Shi Weixing.Study and application of the combined structure to reducing vibration control[J].World Earthquake Engineering,2006,22(4):95-98.
[3]邬喆华,孙炳楠,楼文娟,等.不对称连体双塔楼结构的动力分析[J].浙江大学学报(工学版),2003,37(5):560-565.Wu Zhehua,Sun Bingnan,Lou Wenjuan,et al.Dynamic analysis of an asymmetry double-tower connecting building[J].Journal of Zhejiang Uni-versity(Engineering Science),2003,37(5):560-565.
[4]刘晶波,李征宇,石萌,等.大跨高层连体建筑的结构动力分析[J].建筑结构学报,2004,25(1):45-52.Liu Jingbo,Li Zhengyu,Shi Meng,et al.Dynamic analysis of long span connecting structure between buildings[J].Journal of Building Struc-tures,2004,25(1):45-52.
[5]黄坤耀,孙炳南,楼文娟,等.非对称双塔连体结构的动力特性和地震响应分析[J].工业建筑,2001,31(8):27-29.Huang Kunyao,Sun Binnan,Lou Wenjuan,et al.Dynamic characteristics and seismic response analysis of unsymmetrical connected double-towerstructure[J].Industrial Architectures,2001,31(8):27-29.
[6]陈文兵,唐家祥.水平任意向地震输入下双塔楼连体结构的动力分析[J].振动与冲击,2003,22(1):29-32.Chen Wenbing,Tang Jiaxiang.Dynamic responses analysis of connected double-towers structure under random horizontal-orientation seismic input[J].Journal of Vibration and Shock,2003,22(1):29-32.
[7]陈丽华.高层建筑中叠层混合空腹桁架转换层内力分析和设计建议[J].建筑技术,2005,36(2):99-100.Chen Lihua.Internal force analysis and design proposals of laminated mixed vierendeel truss used as structure transformation story in high-risebuilding[J].Architecture Technology,2005,36(2):99-100.
[8]何浙浙,鲁昂,黄尚荣.竖向荷载作用下单层空腹桁架内力的简化计算[J].建筑技术开发,2001,5(10):13-15.He Zhezhe,Lu Ang,Huang Shangrong.Simply calculation method of internal force of truss under vertical load[J].Architecture Technology andDevelopment,2001,5(10):13-15.
[9]陈朝晖,傅学怡,杨想兵,等.型钢混凝土空腹桁架连体结构研究应用—深圳大学科技楼连体结构解析[J].建筑结构学报,2004,25(2):64-71.Chen Zhaohui,Fu Xueyi,Yang Xiangbing,et al.Study on steel-reinforced concrete vierendeel portal structure-portal structure design of ShenzhenUniversity science-technology building[J].Journal of Building Structures,2004,25(2):64-71.
[2]刘绍峰,施卫星.联合结构减震控制的研究和应用[J].世界地震工程,2006,22(4):95-98.Liu Shaofeng,Shi Weixing.Study and application of the combined structure to reducing vibration control[J].World Earthquake Engineering,2006,22(4):95-98.
[3]邬喆华,孙炳楠,楼文娟,等.不对称连体双塔楼结构的动力分析[J].浙江大学学报(工学版),2003,37(5):560-565.Wu Zhehua,Sun Bingnan,Lou Wenjuan,et al.Dynamic analysis of an asymmetry double-tower connecting building[J].Journal of Zhejiang Uni-versity(Engineering Science),2003,37(5):560-565.
[4]刘晶波,李征宇,石萌,等.大跨高层连体建筑的结构动力分析[J].建筑结构学报,2004,25(1):45-52.Liu Jingbo,Li Zhengyu,Shi Meng,et al.Dynamic analysis of long span connecting structure between buildings[J].Journal of Building Struc-tures,2004,25(1):45-52.
[5]黄坤耀,孙炳南,楼文娟,等.非对称双塔连体结构的动力特性和地震响应分析[J].工业建筑,2001,31(8):27-29.Huang Kunyao,Sun Binnan,Lou Wenjuan,et al.Dynamic characteristics and seismic response analysis of unsymmetrical connected double-towerstructure[J].Industrial Architectures,2001,31(8):27-29.
[6]陈文兵,唐家祥.水平任意向地震输入下双塔楼连体结构的动力分析[J].振动与冲击,2003,22(1):29-32.Chen Wenbing,Tang Jiaxiang.Dynamic responses analysis of connected double-towers structure under random horizontal-orientation seismic input[J].Journal of Vibration and Shock,2003,22(1):29-32.
[7]陈丽华.高层建筑中叠层混合空腹桁架转换层内力分析和设计建议[J].建筑技术,2005,36(2):99-100.Chen Lihua.Internal force analysis and design proposals of laminated mixed vierendeel truss used as structure transformation story in high-risebuilding[J].Architecture Technology,2005,36(2):99-100.
[8]何浙浙,鲁昂,黄尚荣.竖向荷载作用下单层空腹桁架内力的简化计算[J].建筑技术开发,2001,5(10):13-15.He Zhezhe,Lu Ang,Huang Shangrong.Simply calculation method of internal force of truss under vertical load[J].Architecture Technology andDevelopment,2001,5(10):13-15.
[9]陈朝晖,傅学怡,杨想兵,等.型钢混凝土空腹桁架连体结构研究应用—深圳大学科技楼连体结构解析[J].建筑结构学报,2004,25(2):64-71.Chen Zhaohui,Fu Xueyi,Yang Xiangbing,et al.Study on steel-reinforced concrete vierendeel portal structure-portal structure design of ShenzhenUniversity science-technology building[J].Journal of Building Structures,2004,25(2):64-71.
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