| 青藏铁路路基热蠕变数值分析 |
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| 引用本文： | 欧尔峰,李双洋.青藏铁路路基热蠕变数值分析[J].兰州铁道学院学报,2007,26(4):73-77. |
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| 作者姓名： | 欧尔峰 李双洋 |
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| 作者单位： | 兰州交通大学土木工程学院 甘肃兰州730070(欧尔峰)，中国科学院旱区寒区环境与工程研究所冻土工程国家重点实验室 甘肃兰州730000(李双洋) |
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| 摘 要： | 青藏铁路的修建,彻底改变了路基下伏土体的热力学状态,加速了多年冻土的退化,导致铁路地基土中产生大片的、力学性质极不稳定的高温冻土层,从而影响铁路路基的结构稳定性.针对这一问题,应用热、力学(蠕变本构)的相关理论,采用数值计算的方法,计算分析了路基修建若干年后的温度、应力以及变形状况.
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| 关 键 词： | 青藏铁路 路基 温度 变形 数值分析 |
| 文章编号： | 1001-4373（2007）04-0073-05 |
| 修稿时间： | 2007-06-13 |
Numerical Analysis of Thermal-creep of Qinghai-Tibet Railway |
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| Ou Erfeng,Li Shuangyang.Numerical Analysis of Thermal-creep of Qinghai-Tibet Railway[J].Journal of Lanzhou Railway University,2007,26(4):73-77. |
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| Authors: | Ou Erfeng Li Shuangyang |
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| Institution: | 1. School of Civil Engineering,Lanzhou Jiaotong University, Lanzhou 730070,China;2. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | The construction of Qinghai-Tibet railway has greatly changed thermal and mechanical conditions in its underlain frozen soil and accelerated the degeneration of frozen soil.Then,lots of warm frozen soil,which mechanical stability is unstable,will be formed in the foundation.Thus,the stability of subgrade of Qinghai-Tibet railway is threatened by this layer of warm frozen soil.As for this problem,the thermal and creep theories are adopted to analyze the temperatures,stresses and deformations in the subgrade. |
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| Keywords: | Qinghai-Tibet railway subgrade temperature deformation numerical analysis |
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