Bridge’s Overall Structural Scheme Analysis in High Seismic Risk Permafrost Regions

The mechanism of pile-soil reaction in frozen ground is not clear at present, but it obvious that the reduction dead weight will be beneficial to seismic resistance bridges. In view limited bridge engineering practice high risk permafrost regions, paper addressed structural performance superstructure and its effect on piles these special regions. Four superstructures with different weights were compared, bored designed. Numerical simulations implemented investigate refreezing time pile foundation. concrete cooled rapidly first two days. times GFRP, prestressed T-girder, integrated composite girder, MVFT girder 15d, 37d, 39d, 179d, respectively. a same soil layer mainly affected by pile’s diameter, significantly correlated square diameter. It reflects selection region very important, which has been ignored previous studies. length diameter lighter can shorter smaller reduce alleviate thermal disturbance. Doi: 10.28991/CEJ-2022-08-07-01 Full Text: PDF