科研之友
微信
新浪微博
Facebook
分享链接
摘要
Vibration caused by train is one of main vibration types in the traffic environment incentive. Vibration transmitted through the surrounding soil and other media and affects its surroundings. Due to the different vibration nature and building foundations, the vibration attenuation shows different characteristics when wave passing from the source to the internal structure. Even sometimes, there will be amplification effect appeared. Therefore, it is necessary for transport routes and adjacent buildings to take isolation measures to ensure the safety of buildings. A seven-story museum building was used for the study and three-dimensional finite element model was established. Numerical simulations were completed for the structural response and there are four urban rail transit lines beneath the structure. And further, the attenuation laws of structural response under the rail vibration excitation are discussed. According to finite element analysis results, the train speed, the tunnel depth and the floating panels are the main factors affecting the response. When the speed of the train through the museum section was changed from 160-90 km h-1, the acceleration of the upper structure reduces by 31.5% and the velocity reduces by 36%. After considering various measures, structural response can be controlled to ensure structural safety and suitability.
- 出版日期2013
- 单位北京交通大学
