基于遮阳理论冻土区路基及周边冻土表面辐射分析

doi:10.13722/j.cnki.jrme.2015.01.023

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摘要冻土区路基各表面间太阳辐射的差异引起路基发生横向非均匀变形。目前所采用的基于太阳入射角的分析方法，未能充分考虑到冻土区高路基遮阳效应对周边冻土的影响，特别是在对路基坡脚附近冻土分析时与实际工况存在很大的偏差。基于太阳辐射强度和路基影子轨迹随时间的变化规律，提出利用遮阳理论分析路基表面太阳辐射的分析方法。通过对比K. Y. Kondratyev关于倾斜面接收太阳辐射的描述和工程实测数据，验证遮阳理论分析方法的正确性。基于遮阳理论提出直射率概念，并获得路基表面温度计算的经验方程。分析表明，冻土区路基各表面的太阳辐射之间存在明显的差异，其差异性与路基走向、坡度等影响因素密切相关。对于坡度较大的高路基，路基的遮阳效应也会引起路基周边冻土表面出现明显的非均匀太阳辐射，表现为越靠近路基坡脚辐射量越小，阴坡坡脚处辐射量小于阳坡坡脚处辐射量，这种太阳辐射的非均匀分布在路基的稳定性分析中应予以考虑。

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关键词 ：力学, 冻土, 遮阳, 阴阳坡, 路基

Abstract：The difference of solar radiation on different surfaces of embankment would cause uneven transverse deformation. The calculation method based on solar incident angles without considering the shielding to sunshine of high embankment in permafrost regions produces results that have large deviation from the actual situation especially for the permafrost near the toe of slope. A mathematical model of sunshine shield considering the time，the intensity of solar radiation，the position of sun and the track of embankment shadow was established. The mathematical model of embankment sunshine shield was verified with the results from the calculation method of K.Y. Kondratyev and the field test data. The concept of the rate of direct radiation and an empirical equation of surface temperature were proposed based on the shading theory. The results showed that there were differences in solar radiation on different surfaces of embankment. The direction and slope angle of embankment were found to be the major factors of influence. The solar radiation on permafrost surfaces around the embankment were found to be affected greatly，especially when the embankment is higher and the slope angle is larger. The closer to the toe of embankment slope，the weaker radiation it received. The solar radiation on permafrost in shaded slope side is weaker than sunny slope side. The difference of solar radiation on permafrost surfaces around the embankment should be considered in the stability estimation of embankment.

Key words： soil mechanics permafrost sunshine-shield southern and northern slopes embankment

收稿日期: 2014-03-04

引用本文:

夏利江1，2，周国庆1，3，刘宇翼3，王涛3，阴琪翔3. 基于遮阳理论冻土区路基及周边冻土表面辐射分析[J]. 岩石力学与工程学报, 2015, 34(01): 207-216.
XIA Lijiang1，2，ZHOU Guoqing1，3，LIU Yuyi3，WANG Tao3，YIN Qixiang3. ANALYSIS OF SOLAR RADIATION ON EMBANKMENT AND SURROUND PERMAFROST SURFACES IN PERMAFROST REGION BASED ON SHADING THEORY. , 2015, 34(01): 207-216.

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http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2015.01.023 或 http://www.rockmech.org/CN/Y2015/V34/I01/207

[2]	祁长青，吴青柏，施斌，等. 青藏铁路高路堤下多年冻土热状态分析[J]. 岩石力学与工程学报，2007，26(增2)：4 518-4 524.(QI Changqing，WU Qingbai，SHI Bin，et al. Analysis of thermal state of permafrost under high embankment along Qinghai—Tibet railway[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.2)：4 518-4 524.(in Chinese)) " target="_blank">
[5]	胡泽勇，程国栋，谷良雷，等. 青藏铁路路基表面太阳总辐射和温度反演方法[J]. 地球科学进展，2006，21(12)：1 304-1 313.(HU Zeyong，CHENG Guodong，GU Lianglei，et al .Calculating method of global radiation and temperature on the roadbed surface of Qinghai—Tibet railway[J]. Advances in Earth Science，2006，21(12)：1 304-1 313.(in Chinese))
[6]	盛煜，马巍，温智，等. 多年冻土区铁路路基阴阳坡面热状况差异分析[J]. 岩石力学与工程学报，2005，24(17)：3 197-3 201. (SHENG Yu，MA Wei，WEN Zhi，et al. Analysis of difference in thermal state between south faced slope and north faced slope of railway embankment in permafrost region[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(17)：3 197-3 201.(in Chinese)) " target="_blank">
[8]	LIU Z，CHEN J，JIN L，et al. Roadbed temperature study based on earth-atmosphere coupled system in permafrost regions of the Qinghai—Tibet Plateau[J]. Cold Regions Science and Technology，2013，86(2)：167-176. " target="_blank">
[10]	丑亚玲，盛煜，马巍. 青藏高原多年冻土区铁路路基阴阳坡表面温差的计算[J]. 岩石力学与工程学报，2007，26(增2)：4 102-4 107.(CHOU Yaling，SHENG Yu，MA Wei. Calculation of difference in temperature between sunny slope and shady slope along railways in permafrost regions in Qinghai—Tibet Plateaus[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.2)：4 102-4 107.(in Chinese)) " target="_blank">
[13]	CHOU Y L，SHENG Y，LI Y W，et al. Sunny-shady slope effect on the thermal and deformation stability of the highway embankment in warm permafrost regions[J]. Cold Regions Science and Technology，2010，63(1/2)：78-86. " target="_blank">
[15]	MA W，MU Y H，WU Q B，et al . Characteristics and mechanisms of embankment deformation along the Qinghai—Tibet railway in permafrost regions[J]. Cold Regions Science and Technology，2011，67(3)：178-186.
[4]	苏联科学院西伯利亚分院冻土研究所. 普通冻土学[M]. 郭东信，刘铁良，张维信，等译. 北京：科学出版社，1988：52-53.(Permafrost Soils Research Institute of Siberia of U.S.S.R. Academy of Science. The ordinary cryopedology[M]. Translated by GUO Dongxin，LIU Tieliang，ZHANG Weixin，et al. Beijing：Science Press，1988：52-53.(in Chinese)) " target="_blank">
[11]	CHOU Y L，SHENG Y，ZHU Y P. Study on the relationship between the shallow ground temperature of embankment and solar radiation in permafrost regions on Qinghai-Tibet Plateau[J]. Cold Regions Science and Technology，2012，78(7)：122-130. " target="_blank">
[16]	KONDRAT'YEV K Y. Radiation in the atmosphere[M]. New York：Academic Press：1969：912-916. " target="_blank">
[17]	郑鹏飞，林大钧，刘小羊，等. 基于影子轨迹线反求采光效果的技术研究[J]. 华东理工大学学报：自然科学版，2010，(3)：458-463.(ZHENG Pengfei，LIN Dajun，LIU Xiaoyang，et al. Reversing effect of building lighting technology based on shadow track line[J]. Journal of East China University of Science and Technology：Natural Science，2010，(3)：458-463.(in Chinese)) " target="_blank">
[14]	CHEN J，HU Z Y，DOU S，et al. Yin-Yang slope problem along Qinghai—Tibet lines and its radiation mechanism[J]. Cold Regions Science and Technology，2006，44(3)：217-224. " target="_blank">
[9]	LENG P，SONG X N，LI Z L. Estimation of net surface shortwave radiation from land surface temperature in regional scale[J]. Wuhan University Journal of Natural Sciences，2011，16(4)：357-362.
[7]	FENG W J，SUN Z，WEN Z，et al. Application study of the awning measure to obstruct solar radiation in permafrost regions on the Qinghai—Tibet Plateau[J]. Cold Regions Science and Technology，2012，4(2)：121-126. " target="_blank">
[12]	CHOU Y L，YU S，WEI Z M，et al. Calculation of temperature differences between the sunny slopes and the shady slopes along railways in permafrost regions on Qinghai—Tibet Plateau[J]. Cold Regions Science and Technology，2008，53(3)：346-354. " target="_blank">
[1]	赖远明，张鲁新，张淑娟，等. 利用抛石护坡调节冻土路基阴阳坡的温度分布[J]. 岩石力学与工程学报，2004，23(24)：4 212-4 220. (LAI Yuanming，ZHANG Luxin，ZHANG Shujuan，et al. Adjusting temperature distribution under the north and south slopes of roadbed by the ripped-rock revetment in permafrost regions[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(24)：4 212-4 220.(in Chinese)) " target="_blank">
[3]	MA W，CHENG G D，WU Q B. Construction on permafrost foundations：Lessons learned from the Qinghai—Tibet railroad[J]. Cold Regions Science and Technology，2009，59(1)：3-11. " target="_blank">