Experiment Verification of 3D Dynamic FEM Model Used for Analyzing Vibration Impact on Nearby Underground Structures
In this paper,a Ml scale laboratory experiment was designed to verify the 3D FEM model which is established to predict the low frequency vibration impact on nearby tunnel structure at Track Vibration Abatement & Control lab of Beijing Jiaotong University. Excitation vibration with discontinuous frequency from 5 Hz to 28 Hz was stimulated by a shaker machine respectively. The control track is a 6m long concrete slab track with DTVI2 fastening system which is the standard track common used in Beijing metro , while the steel spring floating slab track was also be tested as a corroboration for the single frequency impact vibration measurement. The vibration response with peak particle velocity (PPV) in a nearby tunnel were recorded , where the sensors were placed at the tunnel arch,tunnel wall,tunnel Corner and tunnel invert. And the measurement insertion loss shows the single frequency impact vibration measurement result is creditable in low frequency range and floating slab track has a good vibration isolation performance for secondary structure -bone vibration on nearby tunnel in low frequency (<30Hz). In order to enlarge the usage of this measurement ,a 3D dynamic FEM model was built by MIDAS/GTS and certificated by the measurement result.
Hougui ZHANG Weining LIU Shuang LIU Xiaojing SUN
School of Civil Engineering , Beijing Jiaotong University , Beijing 100044, China
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
62-67
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）