The station hall of new type of integrated building-bridge high-speed railway station often take the form of long span steel truss structure.Station hall structure is concrete floors in the upper string

which is made for the waiting hall.What is more

the device layer is in the middle of upper sting and the lower one.To sum up

the whole truss under high load is more sensitive to the vertical earthquake.This paper takes a certain representative Tianjin West Railway Station hall structure for example

designs the ratio of 1/20 reduced scale of the nine truss element typical model and plans experimental program based on the similarity theory.Then

inputs multiplemagnitude typical seismic waves

completes the shaking table research on testing vertical seismic performance

compares with finite element calculation and acquired the dynamic response characteristics and yielding mechanism of large-span station hall structure under different levels’ vertical earthquake excitation.The results indicate that the current designed station hall structure has good seismic performance and weak links focus on the end oblique abdominal rod of the primary and secondary trusses and nodes while the yield failure of main components does not occur.