高层建筑结构隔震设计关键问题
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摘要
对高层建筑隔震设计中的一些关键问题进行研究,就规范中隔震设计方法的主要不足提出改进建议.采用规范设计反应谱进行高层隔震结构分析时,必须充分考虑结构高阶振型的影响,否则会大大低估结构减震效果.对规范中不同阻尼比的地震影响系数曲线修正方法进行讨论,对规范中采用的阻尼调整和形状参数提出修改建议.指出了规范中容易导致隔震支座受拉的不合理规定,提出了改进后的结构布置原则.并对规范中隔震支座面压控制的计算方法提出修正建议.
Some improvements for the design code were adviced.Using the code design response spectrum to analyze the seismic isolation structure in high-rise building,the vibration modes must be amply consi-dered for calculation,otherwise the effect of the seismic control will be underestimated.The modification method for seismic influence coefficient curve with different damping ratios in the code was discussed,modification of the damping regulation and its shape parameters issued in code are proposed.The shear and compression properties of the laminated rubber,and sliding bearings were analyzed.It is pointed out that the irrationality of calculating method in the code is easy to result in the isolation bearing under the tension,then the correct design method to result in the isolatation under the compression.These analyses provide a theory for application and extending seismic isolation in high-rise buildings.
Some improvements for the design code were adviced.Using the code design response spectrum to analyze the seismic isolation structure in high-rise building,the vibration modes must be amply consi-dered for calculation,otherwise the effect of the seismic control will be underestimated.The modification method for seismic influence coefficient curve with different damping ratios in the code was discussed,modification of the damping regulation and its shape parameters issued in code are proposed.The shear and compression properties of the laminated rubber,and sliding bearings were analyzed.It is pointed out that the irrationality of calculating method in the code is easy to result in the isolation bearing under the tension,then the correct design method to result in the isolatation under the compression.These analyses provide a theory for application and extending seismic isolation in high-rise buildings.
引文
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[3]刘伟庆,王曙光,杜东升.宿迁海关业务大楼基础隔震分析报告[R].南京:南京工业大学,2007.
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[6]Feng Demin,Liu Wenguang,Masuda Keiji,et al.A compara-tive study of seismic isolation codes worldwide[C]∥First Euro-pean Conference on Earthquake Engineering and Seismology.Ge-neva Switzerland:[s.n.],2006.
[7]程华群,刘伟庆,王曙光.高层隔震建筑设计中隔震支座受拉问题分析[J].地震工程与工程振动,2007,27(4):161-166.Cheng Huaqun,Liu Weiqing,Wang Shuguang.Analysis of thetension of rubber bearings in the design of isolated high-risebuildings[J].Journal of Earthquake Engineering and Engineer-ing Vibration,2007,27(4):161-166.
[8]Higashino M,Okamoto S.Response control and seismic isolationof buildings[M].Great Britain:Taylor&Francis,2006.
[9]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[10]和田章,久保哲夫,可児長英,等.免震建築物の技術基準解説及び計算例とその解説[M].東京:工学図酥晔交?社,2001.
[2]侯宝隆.日本隔震技术的新发展与控震技术的实际应用[J].工业建筑,2000,30(11):74;78.Hou Baolong.New developments of seismic isolation and re-sponse control technology in Japan[J].Industrial Construction,2000,30(11):74;78.
[3]刘伟庆,王曙光,杜东升.宿迁海关业务大楼基础隔震分析报告[R].南京:南京工业大学,2007.
[4]中华人民共和国建设部.GB50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[5]刘伟庆,程华群.宿迁开发区商务中心基础隔震分析报告[R].南京:南京工业大学建筑技术发展中心,2006.
[6]Feng Demin,Liu Wenguang,Masuda Keiji,et al.A compara-tive study of seismic isolation codes worldwide[C]∥First Euro-pean Conference on Earthquake Engineering and Seismology.Ge-neva Switzerland:[s.n.],2006.
[7]程华群,刘伟庆,王曙光.高层隔震建筑设计中隔震支座受拉问题分析[J].地震工程与工程振动,2007,27(4):161-166.Cheng Huaqun,Liu Weiqing,Wang Shuguang.Analysis of thetension of rubber bearings in the design of isolated high-risebuildings[J].Journal of Earthquake Engineering and Engineer-ing Vibration,2007,27(4):161-166.
[8]Higashino M,Okamoto S.Response control and seismic isolationof buildings[M].Great Britain:Taylor&Francis,2006.
[9]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[10]和田章,久保哲夫,可児長英,等.免震建築物の技術基準解説及び計算例とその解説[M].東京:工学図酥晔交?社,2001.
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