Vibration comfort analysis and control of corridors and irregular cantilevered structure in a project
Aiming at the corridors and irregular cantilevered structures in a project,the finite element model was established by MIDAS/Gen software,based on the specifications at home and abroad,the comfort in various working conditions that may occur in normal use was analyzed.For structures that do not meet the requirements,the vibration control analysis based on a tuned mass damper(TMD)was carried out,and the calculation results without vibration control and under vibration control were compared.The results show that the vertical acceleration response of corridors and irregular cantilevered structures under pedestrian load exceeds the specification limit,up to 0.983 9m/s2.After the introduction of the TMD for vibration control,the acceleration responses of the structure was significantly reduced.For the over-limit condition,the vibration mitigation rate of TMD is above 69%,the maximum vibration mitigation rate reaches 90.82%,and the average vibration mitigation rate is 85.59%.
large-span structureirregular cantilevered structurepedestrian loadcomforttuned mass damperdamping ratio
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