多年冻土区机场跑道L型热管+保温板温控技术

taptap下载安装安卓学报 ›› 2022, Vol. 40 ›› Issue (3): 23-29.

多年冻土区机场跑道L型热管+保温板温控技术

程国勇，马少敏，杨依恒

（taptap下载安装安卓交通科学与工程学院，天津300300）

收稿日期:2020-12-03 修回日期:2021-02-01 出版日期:2022-06-15 发布日期:2023-10-29
作者简介:程国勇（1971—），男，河北衡水人，教授，博士，研究方向为机场工程、岩土工程.

Temperature control technology of L-shaped heat pipe + insulation board for airport runway in permafrost area

CHENG Guoyong, MA Shaomin, YANG Yiheng

（College of Transportation Science and Engineering, CAUC, Tianjin 300300, China）

Received:2020-12-03 Revised:2021-02-01 Online:2022-06-15 Published:2023-10-29

摘要/Abstract

摘要： 针对多年冻土区机场跑道特点及飞行区的特殊要求，提出斜插L型热管+保温板温控技术方案。首先，对工业纯铝、Q235碳素钢及304不锈钢3种不同材质热管的降温效果进行了实验对比，实验结果表明：工业纯铝热管的降温效果最佳。其次，采用纯铝材质L型热管针对蒸发段坡角、热管弯折角、保温板厚度及保温板埋深对道基温控的影响程度进行了实验分析，实验结果表明：在10°~45°范围内，蒸发段坡角越大,降温效果越好，在梯度比定量指标下，蒸发段坡角取25°可同时满足降温效果和经济性最优化；热管弯折角对降温幅度影响较小，同一埋深下，温差范围在0.1℃~0.3℃，弯折角取120°；2cm厚度保温板的土层回温率最大，3cm和5cm厚度保温板的土层回温率较为接近，8cm厚度保温板土层回温率最小，综合考虑保温效果和经济性，取3cm厚度的保温板；保温板距上覆碎石层10、20、30cm不同埋深下，10cm埋深的土层回温率较20cm和30cm埋深的土层回温率分别高0.02%~0.71%和0.65%~1.71%，20cm埋深的土层回温率较30cm埋深的土层回温率高0.62%~1.62%，30cm埋深的保温效果相对最优。

关键词: 机场跑道, 多年冻土, L型热管, 保温板, 温度控制

Abstract: In accordance with the characteristics of the airport runway in permafrost area and the special requirements of the flight area, a technical solution for obliquely inserted L-shaped heat pipe + insulation board temperature control was proposed. First, the cooling effect of industrial pure aluminum, Q235 carbon steel and 304 stainless steel heat pipes of three different materials was tested and compared, and the results showed that the cooling effect of industrial pure aluminum heat pipes was the best. Then, the L-shaped pure aluminum heat pipe was used to test and analyze the influence of the slope angle, bending angle, thickness and buried depth of the insulation board on the temperature control of the roadbed. The test shows that the range is 10°-45°, the larger the slope angle of the evaporation section, the better the cooling effect. Under the quantitative index of gradient ratio with a 25° slope angle of the evaporation section, the cooling effect and economic optimization can be achieved simultaneously, so the evaporation section slope angle is 25°; the bending angle of the heat pipe has little effect on the cooling rate. At the same depth, the temperature difference ranges from 0.1 ℃ to 0.3 ℃ and the bending angle is 120°; the soil layer of 2 cm insulation board has the highest temperature recovery rate, 3 cm and 5 cm boards are close in recovery rate, 8 cm is the lowest. To be economic, a 3 cm thick insulation board is buried at the depth of 10 cm, 20 cm, 30 cm respectively, and the soil temperature change is compared. The soil temperature recovery rate of 10 cm buried depth is 0.02%-0.71% higher than that of 20 cm buried depth, 0.65%-1.71% higher than that of 30 cm buried depth, while the recovery rate at 20 cm buried depth is 0.62%-1.62% higher than that at 30 cm buried depth. The insulation effect of the board at 30 cm buried depth from the overlying gravel layer is relatively optimal.

Key words: airport runway, permafrost, L-shaped heat pipe, insulation board, temperature control

中图分类号:

V351.11
U416

程国勇, 马少敏, 杨依恒. 多年冻土区机场跑道L型热管+保温板温控技术[J]. taptap下载安装安卓学报, 2022, 40(3): 23-29.

CHENG Guoyong, MA Shaomin, YANG Yiheng. Temperature control technology of L-shaped heat pipe + insulation board for airport runway in permafrost area[J]. Journal of Civil Aviation University of China, 2022, 40(3): 23-29.

参考文献 20

[1]	徐学祖,王家澄,张立新.冻土物理学[M].北京:科学出版社,2001:9-11.
[2]	闫冰.跑道永冻土地基力学特性及稳定性分析理论研究[D].天津:taptap下载安装安卓,2017.
[3]	杨简. 机场跑道多年冻土地基温度场特征研究[D]. 天津: 中国民 taptap点点注册账号学, 2017.
[4]	ROONEY J W. Rock fill embankment applications for convective foundation cooling on the BAM railway system[C]//5th International Symposium on Cold Region Development, Anchorage, Alaska USA, 1997: 399-402.
[5]	HE G S, DING J K, LI Y Q. Heat transmission properties and application of the dump filling crushed stone layer[J]. Journal of Glaciology and Geocryology, 2000, 22(S1): 33-37.
[6]	GOERING D J. Passively cooled railway embankments for use in permafrost areas[J]. Journal of Cold Regions Engineering, 2003, 17(3): 119133.
[7]	刘人玮. 多年冻土区路基冷却管温度效应与设计研究[D]. 西安: 长安大学, 2013.
[8]	ESCH D C. Roadway embankments on warm permafrost problems and remedial treatments[C]//Proceedings of the 5th International Conference on Permafrost. Trondheim: Tapir Publishers, 1988: 1223-1228.
[9]	冯文杰, 马巍. 青藏铁路遮阳板措施应用效果观测研究[J]. 冰川冻土, 2006, 28(1): 108-115.
[10]	杨永平, 魏庆朝, 周顺华, 等. 热管技术及其在多年冻土工程中的应用研究[J]. 岩土工程学报, 2005, 27(6): 698-706.
[11]	潘卫东, 赵肃菖, 徐伟泽, 等. 热棒技术加强高原冻土区路基热稳定性的应用研究[J]. 冰川冻土, 2003, 25(4): 433-438.
[12]	黄海. 以桥代路在青藏铁路多年冻土区的应用[J]. 山西建筑, 2004, 30(9): 118-119.
[13]	段书珩. 碎石填充层在多年冻土区跑道建设中的应用研究[D]. 天津: taptap下载安装安卓, 2019.
[14]	董元宏, 赖远明, 陈武. 多年冻土区宽幅公路路基降温效果研究: 一种 L 型热管-块碎石护坡复合路基[J]. 岩土工程学报, 2012, 34(6): 1043-1049.
[15]	杨永平, 周顺华, 魏庆朝. 多年冻土区路基热管合理倾斜角度的数值分析[J]. 中国铁道科学, 2006, 27(3): 1-7.
[16]	樊云龙. 多年冻土地区热棒路基温度场研究[D]. 西安: 长安大学, 2011.
[17]	李永强. 青藏铁路多年冻土区热棒路基的设计计算[J]. 铁道工程学报, 2007(11): 32-36.
[18]	JOHNSON G H. Performance of an insulated roadway on permafrost[C]// Proceedings of the 4th International Conference on Permafrost. Washington D C: National Academy Press, 1983: 548-553.
[19]	GANDAHL R. Some aspects of the design of roads with boards of plastic foam[C]//Proceedings of the 3rd International Conference on Permafrost. Edmonton: National Research Council of Canada, 1978: 792-797.
[20]	中华人民共和国住房和城乡建设部. 土工试验方法标准: GB/T 50123—2019[S]. 北京: 中国计划出版社, 2019.