季节冻土区高速铁路路堑段路基稳定性试验研究

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摘要新建哈大客运专线穿越东北中部山前平原，其中有10 km长为地下水埋深很浅的路堑段，冻胀问题突出。基于对长春西客站附近的路堑段开展的路基水热状况监测，分析路基填筑主体及其下土体水热条件时空变化过程及其对冻胀的影响，并评价运营前路基变形特性。结果表明，在现有设计和正常施工条件下，路基热稳定性良好，总体相对变形量未超过7 mm，上层冻胀变形量占据总体冻胀量的60%以上，且与地温呈负相关关系，并随着冻深而逐步减少；路基中设置的封闭复合土工膜阻隔外界水分向路基基床主体迁移，使得基床土体含水量基本稳定，从而减少分凝冰的形成；地温变化的趋势和分布特征与基床部位和表层工程措施相关：轨道板和钢筋混凝土基座增大路基的热阻，使得地温等值线在其下呈现略微“上抬”的趋势。同时正线两侧联络线使用的传统道碴层，因其降温机制使得其下的地温呈现略微“降低”的趋势。双向线路中间的排水沟下方冻结深度增大，而路基两侧的排水沟由于使用不同的工程构件，使得该部位下方及临近部位的冻结深度变化与路中排水沟下的略有不同。综合监测结果显示，监测期间试验段路基热力学稳定性良好。

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关键词 ：路基工程, 季节冻土, 高速铁路, 地温, 冻胀变形, 热稳定性

Abstract：Harbin—Dalian passenger dedicated line crosses piedmont plain in the Northeast China，where is seasonal frozen ground region. As a 10 km cutting section of the line located in shallow groundwater area，frost heave is a serious problem in the roadbed construction. Based on monitoring results of hydrothermal conditions of the testing section near the Changchun west railway station，the hydrothermal processes in the roadbeds and their influences on the frost heave are analyzed；and the roadbed deformation before the operation of the railway is evaluated. The results indicated that，under the conditions of current design and construction，the subgrade is thermally stable，and the total deformation of the roadbed is less than 7 mm，while which of the upper layer occupied more than 60%. The frost heave value is negatively correlated with the ground temperature and reduces gradually with the frozen depth. The geomembrane barrier laid in the subgrade prevents the external moisture migrating into the roadbed，resulting in the relatively stable water content of the roadbed soils，thereby reducing the formation of segregation ice. The time-space distribution feature of the ground temperature is related to roadbed position and the surface structure. The ground temperature contour shows a slight elevation trend under the track panels and reinforced concrete base，as they increases the thermal resistance of the roadbed. The ground temperature slightly decreases under the traditional ballast layers of the contact lines along the two sides of the main line，caused by the cooling mechanism of the ballast layer. The frozen depth under the middle gutter is higher than that under the gutters at the two sides，due to the different engineering components used in construction of the gutters. The summarized results show that the testing roadbed has good performance of thermo-dynamic stability during monitoring period.

Key words： subgrade engineering seasonal frozen ground high-speed railway ground temperature frost heave thermal stability

引用本文:

牛富俊1，2，刘华1，3，牛永红1，林战举1，鲁嘉濠1，3，罗京1，3. 季节冻土区高速铁路路堑段路基稳定性试验研究[J]. 岩石力学与工程学报, 2013, 32(s2): 4032-4040.
NIU Fujun1，2，LIU Hua1，3，NIU Yonghong1，LIN Zhanju1，LU Jiahao1，3，LUO Jing1，3. EXPERIMENTAL STUDY OF ROADBED STABILITY IN CUTTING SECTION ALONG A HIGH-SPEED RAILWAY IN SEASONAL FROZEN REGIONS. , 2013, 32(s2): 4032-4040.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2013/V32/Is2/4032

[1]	WILLIAMS P J，SMIT H M W. Thefrozen earth[M]. Cambidge：Cambridge University Press，1989：306.
[2]	徐敩祖，王家澄，张立新. 冻土物理学[M]. 北京：科学出版社，2001：1-2.(XU Xiaozu，WANG Jiacheng，ZHANG Lixin. Physics of frozen soils[M]. Beijing：SciencePress，2001：1-2.(in Chinese))
[3]	田亚护，温立光，刘建坤. 季节冻土区铁路路基变形监测及冻害原因分析[J]. 铁道建筑，2010，(7)：104-107.(TIAN Yahu，WEN Liguang，LIU Jiankun. Monitoring of roadbed deformation of railway and freezing hazard analysis in seasonalfrozen ground[J]. Railway Engineering，2010，(7)：104-107.(in Chinese))
[4]	于琳琳，徐学燕. 季节冻土区铁路边坡冻融破坏分析[J]. 低温建筑技术，2009，31(4)：81-82.(YU Linlin，XU Xueyan. Analysis of freezing-thawing damages on embankment slopes of railway in seasonal frozenground[J]. Low TemperatureArchitecture Technology，2009，31(4)：81-82.(in Chinese))
[5]	谷宪明. 季冻区道路冻胀翻浆机制及防治研究[博士学位论文][D]. 长春：吉林大学，2007.(GU Xianming. Study on mechanism and prevention of frost heaving and frost boiling in seasonally frozen road[Ph. D. Thesis][D]. Changchun：Jilin University，2007.(in Chinese))
[6]	马巍，程国栋，吴青柏. 多年冻土地区主动冷却地基方法研究[J]. 冰川冻土，2002，24(5)：579-587.(MA Wei，CHENG Guodong，WU Qingbai. Preliminary study on technology of cooling foundation in permafrost Regions[J]. Journal of Glaciology and Geocryology，2002，24(5)：579-587.(in Chinese))
[7]	程国栋. 用冷却路基的方法修建青藏铁路[J]. 中国铁道科学，2003，24(3)：1-4.(CHENG Guodong. Construction of Qinghai—Tibet railway with cooled roadbed[J]. China Railway Science，2003，24(3)：1-4.(in Chinese))
[8]	程国栋，孙志忠，牛富俊. “冷却路基”方法在青藏铁路上的应用[J].冰川冻土，2006，28(6)：797-808.(CHENG Guodong，SUN Zhizhong，NIU Fujun. Application of roadbed cooling methods to the Qinghai—Tibet railway construction[J]. Journal of Glaciology and Geocryology，2006，28(6)：797-808.(in Chinese))
[9]	DAIHM，WANGXL.Frost heave susceptibility of highway subgrade soils in seasonal frost regions[J]. Cold Regions Science and Technology，1992，20(2)：141-146.
[10]	叶阳升，王仲锦，程爱君，等. 路基的填料冻胀分类及防冻层设置[J]. 中国铁道科学，2007，28(1)：1-7.(YE Yangsheng，WANG Zhongjin，CHENG Aijun，et al. Frost heave classification of railway subgrade filling material and design of anti-freezing layer[J]. China Railway Science，2007，28(1)：1-7.(in Chinese))
[11]	叶阳升. 论铁路路基填料分类[J]. 中国铁道科学，2004，25(2)：35-41.(YE Yangsheng.Railway filling material classification[J].China Railway Science，2004，25(2)，35-41.(in Chinese))
[12]	朱强，付思宁，武福学，等. 论季节冻土的冻胀沿冻深分布[J]. 冰川冻土，1988，10(1)：1-7.(ZHU Qiang，FU Sining，WU Fuxue，et al. On the frost heave distribution along depth[J]. Journal of Glaciology and Geocryology，1988，10(1)：1-7.(in Chinese))
[13]	霍凯成，黄继业，罗国荣. 路基冻胀机制及冻害防范整治措施探讨[J].岩石力学与工程学报，2002，21(7)：1 099-1 103.(HUO Kaicheng，HUANG Jiye，LUO Guorong. On mechanism of freezing-heave and its treatment in roadbeds[J]. Chinese Journal ofRock Mechanics and Engineering，2002，21(7)：1 099-1 103.(in Chinese))
[14]	宋珲. 季节性冻土地区路基稳定性的数值分析[硕士学位论文][D]. 成都：西南交通大学，2004.(SONG Hui. Numerical simulation of stability of subgrade on seasonal frozen region[M. S. Thesis][D]. Chengdu：SouthwestJiaotong University，2004.(in Chinese))
[15]	许健，牛富俊，李爱敏，等. 季节冻土区保温法抑制铁路路基冻胀效果研究[J]. 铁道学报，2010，32(6)：124-131.(XU Jian，NIU Fujun，LI Aimin，et al. Analysis of the prevention effect of thermal-insulation method on frost heave of railway subgrade in seasonal frozen regions[J]. Journal of the China Railway Society，2010，32(6)：124-131.(in Chinese))
[16]	许健，牛富俊，牛永红，等. 季节冻土区防冻胀护道对保温路基地温特征影响效果研究[J]. 铁道学报，2011，33(3)：84-90.(XU Jian，NIU Fujun，NIU Yonghong，et al. Study on the temperature field of insulated roadbed with frost-resistant berm on seasonal frozen region[J]. Journal of the China Railway Society，2011，33(3)：84-90. (in Chinese))
[17]	许健，牛富俊，牛永红，等. 换填法抑制季节冻土区铁路路基冻胀效果分析[J]. 中国铁道科学，2011，32(5)：1-7.(XU Jian，NIU Fujun，NIU Yonghong，et al. Analysis ofthe effect of replacing-soil method on inhibiting frost heave of railway roadbed in seasonal frozen soil region[J]. China Railway Science，2011，32(5)：1-7.(in Chinese))
[18]	刘华，牛富俊，牛永红，等. 季节性冻土区高速铁路路基填料及防冻层设置研究[J]. 岩石力学与工程学报，2011，30(12)：2 549-2 557.(LIU Hua，NIU Fujun，NIU Yonghong，et al. Study of design of filling material and setting anti-frost layer for high-speed railway roadbed in seasonal frozen regions[J]. Chinese Journal ofRock Mechanics and Engineering，2002，30(12)：2 549-2 557.(in Chinese))