Inversion of Vibration Load on the Pier of Viaduct for Chongqing Rail Transit System
For the discrete Fourier series representation of known transient vibration in single -degree -oMreedom system, through discrete Fourier transform ,the amplitude coefficient of each discrete frequency in the steady state vibration was solved. On the base ,the vibration load of the system was calculated. With this, a new inverse method of vibration load for single -degree-oMreedom system was given, and was applied to multiple -degree-oHreedom system through mode superposition meth -od. For the existing Chongqing straddle monorail transit ,the vibration in a pier of viaduct was tested, and the velocity response under the load of passing trains was gained at the foot of the pier. Through above-mentioned inverse method of vibration load ,an inverse of vibration was done with the tested vibration response data of baseline corrected. The vertical vibration load beard at the simpli -fied bearing point on the cap beam top of the pier was calculated in finite element modal . The results could provide a theoretical basis for the inverse of vibration ,the assessment of environmental vibration and the correlation study. The calculated result could provide a reference for the related work of vehicle vibration of straddle monorail transit.
Feng GAO Fengbing ZHAO
State key Laboratory Cultivation Base for Bridge and Tunnel Engineering in mountain areas, Chongqing Department of Architecture Engineering , Chongqing Energy College, Chongqing 400041, 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
78-84
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）