建筑幕墙振动台试验方法研究

Study on Shaking Table Methods for Vibration Testing of Architectural Curtain-Walls

在总结以往建筑幕墙抗震性能振动台试验研究方法和经验的基础上,指出现行方法的缺点和不足;提出基于加速度反应和位移反应的抗震性能指标和改进的试验方法,并以实例说明该方法用于判断幕墙抗震性能的有效性,探讨了试验中实现加速度与位移反应相协调的方法,分析了该改进试验方法还存在的问题和不足;进一步提出了基于楼层反应谱的试验新概念,即以满足一定的楼层加速度反应谱和相对位移反应谱的地震波作为地震输入,分析了用于模拟地震振动台试验的反应谱要求和波形再现的要求。可为建筑幕墙抗震性能研究和试验方法研究以及工程实践提供借鉴。

The experiences of current shaking table methods for vibration testing of architectural curtainwalls are reviewed to analyze the weakness and shortcomings of the shaking table methods.An improved testing method,as well as the seismic performance indexes of the curtain-walls,which are related to the acceleration responses and deformation responses,is put forward and illustrated through a sample test. The compatibility methods for the acceleration and deformation responses of the curtain-walls tested are suggested and proved to be sophisticated.Finally,a new concept based on floor response spectrum is developed for the analysis.For generating suitable earthquake waves to cover the floor response spectrum related to accelerations and story drifts,further suggestions are made for these requirements.It might be referenced in the seismic performance research and for the experimental methodology of the curtain-wall and even the curtain-wall engineering.