Study and Evaluation of Dynamic Response of Building Structure Under Collapse Vibration

Taking a certain project as the research object， a series of on-site monitoring of collapse vibration were carried out， and the dynamic impact of collapse vibration on surrounding buildings was studied and evaluated. Firstly， the propagation law of collapse vibration was studied by analyzing the surrounding monitoring data of real-time monitoring points. Secondly， the acceleration of the measured point is loaded into the finite element model as a dynamic load. The dynamic response of the frame structure under the action of vibration waves at different distances and its influence on the floor are discussed. The octave spectrum analysis of horizontal and vertical accelerations is carried out to obtain 1/3 octave. Based on the vibration acceleration level， the structural vibration analysis and evaluation are carried out. Results show that the dynamic strength of the surrounding building structure decreases with the increase of the distance of the vibration wave. Moreover， the response tends to enlarge with the increase of the floor number， and the vertical vibration was greater than the horizontal vibration. © 2022 Journal of Vibration,Measurement & Diagnosis. All rights reserved.