Abstract:

The existing simulation and calculation models of Metro stations cannot reflect the actual deformation of uplift piles, which causes deviations in the calculation of Metro station structures and in turn causes irrational steel bar arrangement of Metro station structures. In the paper, it is proposed that the uplift piles should be simulated by largerigidity spring models. Load transferring model is established for the uplift piles, elastic solution based on axial Winkler model is deduced for the uplift piles, and spring rigidity calculation formulas is obtained for the uplift piles simulated. Regarding uplift piles, comparison and contrast is made between the largerigidity spring calculation model and other simulation and calculation models, and comparative analysis is made on the calculation results obtained by these models and on the influence of these calculation results on the deformation of Metro stations. In this way, the deformation difference calculated by different simulation and calculation models is obtained. The paper can provide reference for the structural calculation of Metro stations with uplift piles in the future.

Key words: uplift pile, Metro station, elastic deformation, calculation model