Study On Floor Vibration Comfort Of A Project

As modern engineering structures develop to the direction of large-span、lightand soft, structural vibration caused by human activities behaves more and moresignificantly. Though the the vibration of structure is often insufficient to bring aboutsecurity issues, but will often bring discomfort to people in the structure, eventensions and even panic, and then work efficiency will be reduced largely, the qualityof living will be badly impacted, which affected the normal life of people, theso-called comfort issues.Based on the background of long-span floors in a project, the study of floorstructure behavior related to comfort index under foot load is carried out. In thisarticle, the comfort issue is raised up firstly. And then an overview of the currentsituation of study on floor vibration comfort domestic and abroad is provided, theinternational standards used in the calculation method of evaluation index of comfortare described in details. Subsequently, a study of the project instance is launched onthe theory of finite element. With the method of numerical simulation analysis, thetheoretical study is performed to investigate the vertical vibration response of thefloor subjected to foot loads of people. By Finite Element structural analysis softwareMIDAS/GEN, the finite element model of floor structure is set up firstly. Accordingto the feature of this floor, the load points and detrimental footstep load case isdetermined. Through calculation process, floor vibration acceleration of the scheduleis obtained. Under the evaluating indicator, the comfort level is evaluated and theresult shows that the performance of floor structure meets the design specification ofthis project.