Apparatus for testing performance of construction film structure under condition of simulated rainstorm impact

The invention provides an apparatus for testing the performance of a construction film structure under the condition of simulated rainstorm impact. The apparatus mainly comprises a cross film tensioning device, an artificial rainfall simulation device and a data acquisition system. The construction film is strained by the cross film tensioning device; the artificial rainfall simulation device allows rain drops to drip onto the film; the data acquisition system is used for measuring vibration of the film under impact by the rain drops; and dynamic response of the film under simulated rainstorm impact is researched through data analysis. The apparatus provided by the invention is simple in testing principles and convenient in operation and dismounting and can control the size of the rain drops according design demands in the process of testing. 本发明提供种测试建筑薄膜结构模拟暴雨冲击下性能的装置，该装置主要包括十字形膜材张拉装置、人工模拟降雨装置和数据采集系统；通过十字形膜材张拉装置将建筑薄膜水平绷紧，通过人工模拟降雨装置使得雨滴滴落在薄膜上，从而通过数据采集系统测得薄膜在雨滴冲击下的振动，最后通过数据分析研究薄膜在模拟暴雨冲击下的动力响应。采用本发明的装置所进行的测试原理简