Research On Rule And Control Of Viaduct Environment Vibrancy

Along With the rapid development of China's economy,Spatial three-dimensional transport system which is Composed by the high speed road, the high structure road, the light rail and the subway, has already been thorough downtown, industrial district, inhabited area.Precision instrument's use as well as resident's work and the daily life have been adverse effected. From the scene measured,numerical analysis and computer simulation and so on,the law of the viaduct traffic vibration in the Guangzhou and other places caused by the vibration environment was researched. a three dimensional lead dish rubber bearing (3D LSRB) was used to carry on the vibration control,obtained the good result.The main jobs and the achievement of this thesis are as follows:(1) In-situ experiment has been done on the Environment Vibration of Viaduct Traffic in GuangZhou province,established the statistical regression formula about vibration level In order to forecast the attenuation law of vibration aroused by the viaduct traffic.The bridge pier-pile-soil-building ANSYS model has been established to Research the dynamic response of soil and building under environmental vibration.The results of the simulation and the measurement are in coincidence.(2) Carried on the numerical simulation and the experimental study to a cylinder lead shear dampers and a three dimensional lead dish rubber bearing (3D LSRB).The cylinder lead shear dampers which installment is small,has strongly consumes energy ability,with hysteretic curve is plumper. 3D LSRB has many advantages such as easy to adjust Stiffness and damping, simple struction,easy-made,steady performance,etc.(3) The three dimensional lead dish rubber bearing (3D LSRB) may use in the short period the underlying bed construction and the rigid structure,may also use up the bridge pier. Through the analysis of the mode of 3D LSRB structure,it shows that the low modes of isolation structure behave as whole movement. The analysis result also shows that the 3D LSRB can effectively reduce the buildings vibration induced by viaduct transportation.