分区吊挂式建筑幕墙模拟地震振动台试验方法研究

Earthquake Simulation Shaking Table Test Methods for Zonal Hanging Architectural Curtain Walls

分区吊挂式建筑幕墙体系独特而复杂,其抗震性能值得关注。在分析其结构特点和总结以往建筑幕墙振动台试验研究成果的基础上,指出现行试验方法的不足,并从地震作用分析、试验单元选取、试验支架设计和抗震性能评价四个方面进行改进,提出了基于主体结构和幕墙支撑结构地震反应的分区吊挂式建筑幕墙振动台方法。利用该方法进行某超高层建筑分区吊挂式玻璃幕墙振动台试验,合理地评价了该幕墙单元的抗震性能,验证了该方法的有效性和实用性。

The system of zonal hanging architectural curtain walls is unique and complicated, so its seismic performance is worthy of study. The analysis of its structural features and the current shaking table test approaches for architectural curtain walls were reviewed, and weakness and shortcomings of the contemporary testing methods were discussed. A new shaking table testing method for zonal hanging architectural curtain walls was put forward, considering four aspects, i.e. earthquake action analysis, test sample selection, test framework design and seismic performance evaluation, which is related to seismic responses of the major structure and the support system for the curtain wall. A test on zonal hanging glass curtain walls of a highrise building was carried out in accordance with the new method. The seismic performances of the curtain wall units were evaluated reasonably, and consequently the significance and practicality of the method raised in this paper were verified.