STRUCTURAL DESIGN AND CALCULATION OF PRECAST SLAB BALLASTLESS TRACK UNDER DIFFERENT FOUNDATION CONDITIONS
Based on the construction requirements of urban rail transit engineering,a coupled model of bal-lastless track structure under different foundation conditions was established using finite element software on the basis of non prestressed track slab structure design.Combined with the limit state method,the bending moment and reinforcement calculation of prefabricated slabs under comprehensive consideration of train load,temperature gra-dient,and foundation deformation were studied.The results show that a reasonable design of non prestressed slab ballastless track structure can meet the needs of engineering construction.The reinforcement design of the ultimate bearing capacity of the roadbed section is controlled by accidental combination effects,and the longitudinal and transverse reinforcement of track slabs of different foundation types are controlled by the standard combination of normal use ultimate state.
subwaystructural design and checkingslab ballastless tracklimit state method
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