铁道标准设计2019，Vol.63Issue(3)：1-7,7.DOI:10.13238/j.issn.1004-2954.201804090002
基于数值模型应力提取的并线高铁沉降计算
Settlement Calculation of Co-line High-speed Railway Based on Numerical Model of Additive Stress Extraction
摘要
Abstract
In order to evaluate the co-line high-speed railway settlement, and avoid the uncertainty of numerical model parameters as well as the limit of theoretical model, a new method is proposed with the additive stress obtained by numerical model and the settlement obtained by layer-summation theory.In this study, factors which influence the additive stress distribution are analyzed in detail, and the general rule for numerical model establishment is suggested.The soil constitutive model, modulus, Poisson ratio, layered soil and so on can be ignored in the numerical simulation analysis, and the vertical and horizontal model boundary should be 1.5～2.0 times of the railway base width.As the groundwater level influences the additive stress distribution significantly, it is more reasonable to ignore generally the groundwater effect.For engineering verification, a high-speed railway station on Beijing-Shanghai line is chosen, and the additive settlement evaluation is conducted accordingly.The results show that the proposed method is effective practically and theoretically.关键词
铁路路基/并线/沉降计算/数值模型/附加应力/高速铁路Key words
Railway subgrade/Co-line/Settlement calculation/Numerical model/Additive stress/High-speed railway分类
建筑与水利引用本文复制引用
宋绪国,郭帅杰,陈洪运..基于数值模型应力提取的并线高铁沉降计算[J].铁道标准设计,2019,63(3):1-7,7.基金项目
中国铁路设计集团科技研究开发计划项目 (721743) （721743）
