首页 | 本学科首页   官方微博 | 高级检索  
     


Attenuation of flexural vibration for floating floor and floating box induced by ground vibration
Authors:C.K. Hui  C.F. Ng
Affiliation:Department of Civil and Structure Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Abstract:This paper investigates the vibration isolation performance of floating floor and floating box structures to control rail vibration transmission. Simple theoretical and experimental methods are developed to analyze the effects of stiffener beam, mass and arrangement of isolator on the fundamental natural frequency of the flexural vibration of floating floor and box structure.The vibration reduction performances of floating floor and box structure are found to be degraded by flexural vibration of the floor or supporting stiffener beam. From the results of vibration measurements; stiffener beams increase the fundamental natural frequency of flexural vibration of floating floor and enhance vibration isolation. Also they can further alleviate the effect of flexural vibration using optimum isolator arrangement effectively. The proposed floating box design achieved a vibration reduction of 15-30 dB in frequency region of critical rail vibration (30-200 Hz).
Keywords:Bending resonance   Floating floor   Train   Stiffener   Nodalization
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号