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| Research on the Control of Comfort Degree in Vibration Caused by Human in Large - span Floor of High - speed Rail Station |
| SUN Jian – long |
| (China Railway First Survey ; Design Institute Group Co. Ltd，Xi’an，Shaanxi 710043，China) |
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Abstract Research purposes: For the large span floor of high speed railway station，through the establishment of finite element model，the vibration properties of the large - span floors in the structure were studied. The theory of structural vibration control was used and multiple tuned mass dampers (MTMD ) was selected and used to control the comfort degree and the vibration of the structure in the crowd loads. Research conclusions:( 1 ) The three - dimensional structure analysis model establislied by general finite element analysis software platform can analyze dynamic response of floor structure under various crowd load conditions before and after damping in the whole construct course，and compare the structures before and after the vibration in terms of peak acceleration index. (2) The MTMD scheme can effectively reduce the vibration acceleration peak of floor in the crowd load，which can make the structure meet requirements of degree of comfort in vibration caused by human and have good effect to control the vibration. (3) The research results can provide a theoretical reference and technical support of vi bration control and comfort design of similar large span floor
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Received: 18 November 2015
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2016, Vol. 33 
