工程地质学报2013，Vol.21Issue(4)：516-524,9.
季节性冻土区高速铁路换填路基冻结特征的有限元分析
FINITE ELEMENT ANALYSIS ON FROZEN CHARACTERISTIC OF ROADBED WITH EXCHANGE FILLING MATERIAL IN HIGH-SPEED RAILWAY IN SEASONAL FROZEN GROUND
摘要
Abstract
Frost heave has caused serious damage to railway roadbeds in seasonal frozen regions.Therefore,frost heave prevention is the basic principle of roadbed design in seasonal frozen regions.It is a rigorous task because of the strict demand of the deformation in high-speed railway.The heat transport equation and two-dimensional finite element method are employed to simulate the maximum frozen depth in the coming 50 years.The simulation consider the warming environment temperature in the conditions of different depths,shapes,filling materials,and construction seasons.It studies the roadbed temperature field of different parts in high-speed railway.Based on the numerical simulation,appropriate depth,shape,filling material and construction season are proposed for exchange filling material roadbed design.The relationship between the railroad and the railway thermal stability is analyzed as well.关键词
季节性冻土区/换填法/高速铁路路基/数值分析/哈大客运专线Key words
Seasonal frozen ground, Method of exchange filling material, High-speed railroad, Numerical analysis, Harbin to Dalian passenger dedicated line(HDPDL)分类
交通工程引用本文复制引用
刘华,牛富俊,牛永红,林战举,鲁嘉濠..季节性冻土区高速铁路换填路基冻结特征的有限元分析[J].工程地质学报,2013,21(4):516-524,9.基金项目
科技部973计划项目(2012CB026101)自然科学重点基金项目(41030741)和创新群体项目(41121061)资助. （2012CB026101）
