房屋屋顶隔热层(TMD)减震控制系统研究
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摘要
为了改善房屋结构的抗震性能,实现房屋结构减震设计的可靠性和有效性,提出了利用多层房屋结构屋顶隔热层作为TMD装置系统来达到减震的设想。建立了TMD控制结构的力学模型,并应用其中的双线型恢复模型描述橡胶隔震垫的弹塑特性,进一步对屋顶隔热层作为减震装置的构造设计。通过位移时程分析使结构各楼层的位移峰值得到了显著降低。工程实例计算表明,屋顶隔热层作为减震控制系统设计是可行和实用的。
In order to improve the effect of shock absorption of a structure, the authors propose that the thermal-insulating roof of multi-storey building should be used as TMD system to reduce seismic response. The dynamic analysis mode for a structure with TMD is set up and the isolated supporting is modeled using bi-linear hysteretic model. And the construction design of the thermal-insulating roof with TMD system is further studied. The results obtained from time history of displacement analysis show that thermal-insulating- roof-as-TMD can reduce the seismic response of a multi-storey building .At last, a numerical simulation is used to test the feasibility and practicality of this design.
In order to improve the effect of shock absorption of a structure, the authors propose that the thermal-insulating roof of multi-storey building should be used as TMD system to reduce seismic response. The dynamic analysis mode for a structure with TMD is set up and the isolated supporting is modeled using bi-linear hysteretic model. And the construction design of the thermal-insulating roof with TMD system is further studied. The results obtained from time history of displacement analysis show that thermal-insulating- roof-as-TMD can reduce the seismic response of a multi-storey building .At last, a numerical simulation is used to test the feasibility and practicality of this design.
引文
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[4]黄建文,赵斌.叠层橡胶支座基础隔震建筑的非线形分析[J].西安科技学院学报,2000,20(4):317-321.
[5]刘艳霞.地震作用下高层钢结构建筑TMD优化控制研究[D].上海:同济大学结构研究所,1996.
[6]陈以新.MATLAB在结构动力分析中的应用[J].福建建筑,1999,16(2):44-47.
[2]邹祖军.PTMD对剪切型结构地震反应的控制效果分析[J].同济大学学报,1999,27(5):507-510.
[3]施卫星,李正升.一种叠层橡胶支座动态性能试验研究[J].同济大学学报,1999,27(4):402-405.
[4]黄建文,赵斌.叠层橡胶支座基础隔震建筑的非线形分析[J].西安科技学院学报,2000,20(4):317-321.
[5]刘艳霞.地震作用下高层钢结构建筑TMD优化控制研究[D].上海:同济大学结构研究所,1996.
[6]陈以新.MATLAB在结构动力分析中的应用[J].福建建筑,1999,16(2):44-47.
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