Research on Ground and Building Response Induced by Subway Vibration and its Vibration Reduction
Aiming at the problem of vibration and noise caused by subway vibration to buildings,based on the geological survey report of Guangzhou Metro Line 9,a rail-tunnel-soil layer-building finite element model was established based on ABAQUS to study the vibration change law of subway vibration at different horizontal distances from the ground to the tunnel pick-up point and the propagation law of subway vibration in the building with the change of floor.The results show that vertical vibration is the main vibration of soil layer and building caused by subway operation,and the ratio of vertical vibration to horizontal vibration of building is greater;With the increase of the horizontal distance from the tunnel,the vibration attenuation of the ground pickup point is obvious,and the initial 0-20 m vibration attenuation is the largest;The vibration energy of the building is mainly in the low frequency band 5-15 Hz,and the peak value of vibration is around 10 Hz;The gap has good vibration isolation effect,and the attenuation rate of the acceleration vibration level of the building reaches 4%,and the attenuation effect of the middle floor is better.
subway vibrationfinite element modelbuilding vibrationvibration characteristicsempty ditch attenuation
万方数据
维普
