| 季节性冻土区高铁路基长期沉降数值模拟 |
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| 引用本文： | 郑晓峰,张向东,兰常玉. 季节性冻土区高铁路基长期沉降数值模拟[J]. 安徽建筑, 2010, 17(1): 77-77,99 |
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| 作者姓名： | 郑晓峰 张向东 兰常玉 |
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| 作者单位： | 1. 中铁九局集团第一工程有限公司,辽宁,沈阳,110167
2. 辽宁工程技术大学土木与交通学院,辽宁,阜新,123000 |
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| 摘 要： | 随着我国铁路网建设的高速发展,穿越季节性冻土区的铁路数量及行车速度都在不断提高,由于高铁路基沉降所引发的危害也愈加严重。在考虑季节性冻土结构性、冻融循环的基础上建立了高速列车荷载长期作用下沉降量预测模型,给出了具体计算步骤;通过将模拟划分为若干个过程,实现了土体力学特征值的动态控制,避开了振波对土体应变影响的复杂性,使预测结果更加精确。
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| 关 键 词： | 季节性冻土 高速铁路 路基 长期沉降 预测 |
Numerical Simulation of Long-term Subsidence of High-speed Railway Bed in Seasonal Frozen Earth Area |
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| Affiliation: | Zheng Xiaofeng et al(China Railway No.9(Go).-1st Engineering Corporation,Shenyang 110167,China) |
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| Abstract: | With the speedy construction of railway network in our country,the number of trains that run through the seasonal frozen earth area and their driving speeds are increasing accordingly;meanwhile the harms triggered by roadbed subsidence are growing even more serious.A predictive model of the roadbed subsidence under long-term load action of the high-speed trains is established considering the constitutive property of seasonal frozen earth and the freezing and thawing circle;concrete computation steps are pre... |
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| Keywords: | seasonal frozen earth high-speed railway roadbed long-term subsidence predictive |
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