摘要
通过分析某高层建筑结构在7度多遇地震下楼层反应谱探讨玻璃幕墙的地震作用。对各楼层反应谱进行适当包络,得到考虑不同阻尼比的楼层设计反应谱,并拟合了楼层地震影响系数曲线,可用于考虑幕墙自身自振周期、阻尼比的地震作用。提出了该高层建筑不同区域、不同安装状态时,垂直于幕墙平面的分布水平地震作用标准值和平行于玻璃幕墙平面的集中水平地震作用标准值计算公式,并且探讨了大跨度幕墙基于位移的地震输入。研究成果可供实际工程设计参考。
The earthquake actions to glass curtain walls of a high-rise building were studied through obtaining floor acceleration response spectra based on the analysis of floor seismic response under frequent earthquake at 7 degree seismic fortification intensity.The design floor seismic response spectra were rationally enveloped over the floor acceleration response spectrum curves with different damping ratios.The curves of floor seismic effect coefficients were created and suitable for the earthquake response of glass curtain walls with varies natural periods and damping ratios.The calculation formulations for earthquake actions in and out of plane of glass curtain walls on different portions with different mounting statues were put forward,and the earthquake actions to large-span curtain walls based on deformation responses were also investigated.The results can be used for reference to compatible projects.
出处
《结构工程师》
2010年第6期142-148,共7页
Structural Engineers
基金
上海自然基金项目--幕墙结构地震破坏机理与试验再现(08ZR1420200)
土木工程防灾国家重点实验室自主研究课题基金项目--复杂模型动力全过程相似理论及关键技术研究(SLDRCE08-B-02)
上海市科技攻关计划资助项目--500米以上超高层建筑设计关键技术研究(09dz1207704)
关键词
玻璃幕墙
地震作用
楼层设计反应谱
安装状态
glass curtain wall
earthquake action
floor seismic design response spectra
mounting statues
