LAUSR

Abstract The vibration performance of a simulation for a hidden-frame supported glass curtain wall (HFSGCW) was tested using a Laser Doppler Vibrometer (LDV) in this paper. The effect of silicon structural sealant on the first order inherent frequency of HFSGCW and the spectral characteristics per LDV on different points were studied. Meanwhile, the test results of LDV were verified using traditional sensors (DASP modal analysis system) in order to evaluate the feasibility of LDV used for safety state evaluation of HFSGCW. Results show that the first order inherent frequency obtained by LDV matches well with DASP modal analysis results. The first order inherent frequency decreases with an increase of sealant failure，and the first order frequency amplitude scale of structural sealant upper point increases significantly after the structural silicon sealant is destroyed. The safety state of HFSGCW is divided into three levels. Meanwhile, a safety state rapid evaluation model and key detection technologies of HFSGCW based on LDV is proposed.