THE RESEARCH OF GROUND TRAFFIC VIBRATION SOURCE AT SURROUNDING AREA OF ZHENGYANGMEN BASED ON TRAFFIC INVESTIGATION

Zhengyangmen is located on the north-south axis line of Beijing. There are Zhengyangmen city gate and arrow tower which are suffering from the environmental vibration induced by the ground traffic because this area lie in the vital communication lines. The vibration problem of Zhengyangmen city gate and arrow tower induced by vehicle vibration is more and more important, and the damage caused by vehicle vibration should be paid more attention to. In order to study the dynamic response of Zhengyangmen city gate and arrow tower induced by ground traffic, the vibration characteristic of ground traffic is the basic research content. The ground traffic characteristic is summarized based on the traffic site investigation, and by means of vehicle dynamic model, motion equations are established, which are used to derive the vibration source form of a single type vehicle, and the vibration source form of one transportation route is summarized according to the traffic investigation at last. The ground traffic characteristic is used for the study of the dynamic response of Zhengyangmen city gate and arrow tower, to check whether the vibration displacement of Zhengyangmen city gate and arrow tower is within the standard, and also provide data for protecting historic buildings.