Dynamic Analysis Of Passenger Stations In Transportation Hubs Based On Comfort Evaluation

With the acceleration of urbanization,passenger station is an important part of urban transportation.However,with the increasing shortage of urban land,a number of cities across the country have established multi-storey passenger station.The so-called multi-storey stereoscopic passenger station is a new type of setting up the parking lot and departure point in the interior of the building,abandoning the single-storey departure mode of "front station and back yard" and the horizontal passenger transport mode.The advantage of this new type lies in the multi-layer simultaneous departure and the superposition of functions,and the combination of the height difference of the base and the reasonable arrangement of parking Spaces and departure Spaces can solve the contradiction of large demand scale and small land area.This kind of structure is of great benefit to the improvement of passenger waiting environment,the improvement of transportation capacity and the realization of the separation function of passengers and vehicles.However,if the vehicle-induced floor vibration effect is ignored in the structural design of the existing space frame or the frame-shear wall passenger transport hub,many negative effects will be brought,such as:1)For the passenger station,the office staff in the office area also suffer from uncomfortable troubles caused by floor vibration when the passenger car stops and starts frequently.2)The vibration caused serious damage to the subsidiary structure,which seriously affected the operation of the station and the safety of passengers.In this paper,a multi-storey passenger station as the engineering background,the main work is as follows:(1)For the vehicle-floor substructure,the vehicle-floor calculation model is established,and the general 7-dof passenger vehicle model is established by using the mass-spring-damping distribution model.The roughness of floor slab is considered as a stationary random process and the roughness of floor slab beam is simulated based on the frequency domain power spectrum equivalent method.The spatial coupling equation of passenger station structure and passenger vehicle is established.The vehicle equation and structural equation are solved by separate iteration method.The auto floor response analysis program based on MATLAB and ANSYS APDL language was developed.Simulation analysis of vehicle-floor coupling system under different working conditions can be carried out.(2)In this paper,the vibration test of a domestic passenger station has been put into operation,and the time-frequency characteristics of different passenger vehicles in the state of non-stop driving were obtained.Based on the measured results under different operating conditions and driving speeds,the main influencing factors of the load characteristics of passenger vehicles were analyzed.And the vehicle load under different working conditions is simulated.(3)According to the measured data,the validity of the simulation method is verified,and the comfort level of floor vibration suitable for multi-storey buildings such as stations is selected to evaluate the comfort level of waiting rooms,office areas and apartment personnel.And gives some Suggestions on the way of the whole passenger station.