[1]莫石秀,郭月芹..隔热板埋深对冻土路基温度场的影响分析[J].郑州大学学报(工学版),2010,31(03):77-81.[doi:10.3969/j.issn.1671-6833.2010.03.020]
　Mo Shixiu,Guo Yueqin.Analysis of the influence of buried depth of heat insulation board on the temperature field of frozen soil subgrade[J].Journal of Zhengzhou University (Engineering Science),2010,31(03):77-81.[doi:10.3969/j.issn.1671-6833.2010.03.020]
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隔热板埋深对冻土路基温度场的影响分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
31卷
期数:
2010年03期
页码:
77-81
栏目:
出版日期:
2010-03-01

文章信息/Info

Title:
Analysis of the influence of buried depth of heat insulation board on the temperature field of frozen soil subgrade
作者:
莫石秀; 郭月芹.
长安大学公路学院,陕西,西安,710064;广东省路桥建设发展有限公司,广东,广州,510635, 广东省公路勘察规划设计院,广东,广州510507
Author(s):
Mo Shixiu; Guo Yueqin
关键词:
道路工程;  多年冻土;  隔热板;  路基温度场;  埋深;  有限元
Keywords:
DOI:
10.3969/j.issn.1671-6833.2010.03.020
文献标志码:
A
摘要:
采用焓模型,建立含相变的冻土路基温度场.利用非线性有限元方法对隔热板路基温度场进行数值模拟,并结合考虑近期及远期冻土保护效果,采用冻土年最大融深及路基内融土核高度两个评价指标综合分析了路基高度、路基施工季节等因素对隔热板最佳埋深的影响.有限元计算表明,当施工季节向冷季推迟3个月时,隔热板的冻土保护效果显著增强,路基在运营20年内无融土核出现.在确定隔热板最佳埋深时需综合考虑施工季节、路基高度等因素的影响,若路基较低,宜浅埋,路基高度较高,暖季施工宜中埋,冷季施工宜浅埋.
Abstract:
The enthalpy model was used to establish the temperature field of frozen soil subgrade with phase transition. The influence of subgrade height, subgrade construction season and other factors on the optimal burial depth of the insulated board was comprehensively analyzed by considering the short-term and long-term permafrost protection effects, and considering the short-term and long-term permafrost protection effects. The finite element calculation showed that when the construction season was delayed to the cold season by 3 months, the frozen soil protection effect of the insulation board was significantly enhanced, and no melt core appeared in the roadbed within 20 years of operation. When determining the best burial depth of the heat insulation board, it is necessary to comprehensively consider the influence of the construction season, the height of the roadbed and other factors, if the roadbed is low, it should be shallow burial, the height of the roadbed is high, the warm season construction should be buried in the middle, and the cold season construction should be shallowly buried.

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更新日期/Last Update: 1900-01-01