基于X-CT技术对严寒地区高铁路基微冻胀填料级配碎石冻胀过程微结构演变分析
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- 英文论文题名：Analyses of Microstructure Evolution During Frost Heaving in Graded Aggregates with Micro-frost Heave Fillings Addition for High Speed Railway Roadbed on X-CT Technology
- 论文作者：潘利 ; 蒋金洋 ; 赵国堂 ; 佘伟 ; 杨国涛
- 英文论文作者：PAN Li ; JIANG Jinyang ; ZHAO Guotang ; SHE Wei ; YANG Guotao ; Jiangsu Key Laboratory for Construction Materials ; School of Materials Science and Engineering ; Southeast University ; China Railway Corporation
- 年：2016
- 作者机构：东南大学材料科学与工程学院江苏省土木工程材料重点实验室;中国铁路总公司;
- 论文关键词：高铁路基 ; 细粒土填料 ; 级配碎石 ; X射线断层扫描 ; 孔隙率 ; 冻胀
- 英文论文关键词：high-speed railway subgrade ; fine-grain soil fillings ; graded aggregates ; X-ray computerized tomography(XCT) ; porosity ; frost heaving
- 会议召开时间：2016-11-18
- 会议录名称：第一届先进材料前沿学术会议论文集（《材料导报》2016年第30卷第Z1期）
- 语种：中文
- 分类号：U213.1
- 学会代码：CLDB
- 会议名称：第一届先进材料前沿学术会议
- 会议地点：中国陕西西安
- 主办单位：《材料导报》杂志社
- 学会名称：材料导报编辑部
- 页数：6
- 文件大小：1354k
- 原文格式：O
- 会议级别：全国
摘要
严寒地区高速铁路路基面临着严重的冻胀变形的问题,而季节性冻土路基防冻胀是众多问题中最为基础、最为核心的问题。研究了高速铁路路基中微细填料对路基的冻胀影响规律,通过X射线断层扫描(X-CT)三维重构技术,对掺细粒土微冻胀填料的路基级配碎石结构进行三维重构,分析不同影响因素对级配碎石内部结构的影响,如孔隙率、冻胀前后孔隙分布等。通过渗水试验确定试样的不同饱水度,对不同饱水度的掺细粒土级配碎石进行完全低温冷冻处理,分析X-CT扫描结果得到其内部水分结冰情况下孔隙的变化及冰层的位置,实现对其冻胀过程微结构演变的分析。
The frost heaving deformation is a serious problem of high speed railway subgrade in severe cold regions and frost heaving resistance for seasonal frozen soil subgrade is the most fundamental and important problem.This paper has studied the effect of micro-frost heave filling materials to frost heaving in high speed railway subgrade.The X-ray computerized tomography(X-CT)method was used to reconstruct the microstructure of graded aggregate with fine-grain soil addition and the influence factors of the inner structure such as the porosity,pore distribution after frozen were discussed.The samples with different water saturation were prepared by water immersion and then these samples were frozen in a refrigeration equipment to make sure the inner water has turned into ice completely.The changes of porosity and ice distribution could be observed by analyzing the CT images with the help of related image processing software.In particularly,the microstructure evolution of this material during frost heaving was monitored by CT scanning test.
The frost heaving deformation is a serious problem of high speed railway subgrade in severe cold regions and frost heaving resistance for seasonal frozen soil subgrade is the most fundamental and important problem.This paper has studied the effect of micro-frost heave filling materials to frost heaving in high speed railway subgrade.The X-ray computerized tomography(X-CT)method was used to reconstruct the microstructure of graded aggregate with fine-grain soil addition and the influence factors of the inner structure such as the porosity,pore distribution after frozen were discussed.The samples with different water saturation were prepared by water immersion and then these samples were frozen in a refrigeration equipment to make sure the inner water has turned into ice completely.The changes of porosity and ice distribution could be observed by analyzing the CT images with the help of related image processing software.In particularly,the microstructure evolution of this material during frost heaving was monitored by CT scanning test.
引文
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2 Beskow G,Osterberg J O.Soil freezing and frost heaving with special application to roads and railroads[M].Evanston:Technological Institute of Northwestern University,1947.
3徐学祖.王家澄.张立新.冻土物理学[M].北京:科学出版社,2001:4.
4童长江.管枫年.土的冻胀与建筑物冻害防治[M].北京:水利电力出版社,1985.1.
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6 Sheng D C.Thermodynamics of freezing soils[D].Sweden:Lulea University Press,1994.
7 Everett D H.The thermodynamics of frost damage to porous solids[J].Trans Faraday Soc,1961,57:1541.
S Miller R D.Freezing and heaving of saturated and unsaturated soils[J].Highway Res Record.1972(393),1.
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10 Penner E.Fundamental aspects of frost action[R].Int Symp on Frost Action in Soils.Sweden,1977.
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12 Shi Bin,Jiang Hongtao.A study on the development of failures inside soil under the external force using CT technique[J].Chin J Geotech Eng,2000(5):537(in Chinese).施斌,姜洪涛.在外力作用下土体内部裂隙发育过程的CT研究[J].岩土工程学报,2000(5):537.
13 Cheng Zhanlin,Zuo Yongzhen,Ding Hongshun.Application oi CT technology in geotechnical mechanics[J].J Yangtze River Scientific Research Institute,2011(3):33(in Chinese).程展林,左永振,丁红顺.CT技术在岩土试验中的应用研究[J].长江科学院院报,2011(3):33.
14 Liu Zengli,Zhang Xiaopeng,Li Hongsheng.A damage constitutive model lor irozen soils under uniaxial compression based on CT dynamic distinguishing[J].Rock Soil Mech,2005(4):542(in Chinese).刘增利,张小鹏,李洪升.基于动态CT识别的冻土单轴压缩损伤本构模型[J].岩土力学,2005(4):542.
15 Sun Xingliang,Wang Ren,Hu Mingjian.A CT-timely experimental study on meso-scopic structural damage development oi irozen soil under triaxial shearing[J].Rock Soil Mech,2005(8):1298(in Chinese).孙星亮,汪稔,胡明鉴.冻土三轴剪切过程中细观损伤演化CT动态试验[J].岩土力学,2005(8):1298.
16 Zheng Jianieng,Zhao Shuping,Ma Wei,et al.Application oi CT testing technology in evaluating the uniformity oi soil samples[J].J Lanzhou University:Nat Sci,2009(2):20(in Chinese).郑剑锋,赵淑萍,马巍,等.CT检测技术在土样初始损伤研究中的应用[J].兰州大学学报:自然科学版,2009(2):20.
17 Torrance J K,Elliot T,Martin R,et al.X-ray computed tomography of frozen soil[J].Cold Regions Sci Technol,2008,53:75.
18 Chen Aijun,Study on the filling heave classification of the railway subgrade[D].Beijing:China Academy of Railway Science,2006(in Chinese).程爱君,铁路路基填料的冻胀性分类研究[D].北京:铁道科学研究院,2006.
19 Ye Yangsheng,Wang Zhongjin,Chen Aijun,et al.Frost heave classification of railway subgrade filling material and the design of anti-freezing layer[J].China Railway Sci,2007,28(1):1(in Chinese).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.
20 Zhang Yichen,Li Xin,Zhang Xifa,et al.Research on frost heave susceptibility and classification of coarse grained soil of highway subgrade in seasonally frozen ground region[J].Chin J Geotech Eng,2007,29(10):1522(in Chinese).张以辰,李欣,张喜发,等.季冻区公路路基粗粒土的冻胀敏感性及分类研究[J].岩土工程学报,2007,29(10):1522.
21土工试验方法标准(GB/J50123-1999)[S].中国计划出版社,1999:6.
2 Beskow G,Osterberg J O.Soil freezing and frost heaving with special application to roads and railroads[M].Evanston:Technological Institute of Northwestern University,1947.
3徐学祖.王家澄.张立新.冻土物理学[M].北京:科学出版社,2001:4.
4童长江.管枫年.土的冻胀与建筑物冻害防治[M].北京:水利电力出版社,1985.1.
5崔托维奇H A.冻土力学[M].北京:科学出版社,1985:54.
6 Sheng D C.Thermodynamics of freezing soils[D].Sweden:Lulea University Press,1994.
7 Everett D H.The thermodynamics of frost damage to porous solids[J].Trans Faraday Soc,1961,57:1541.
S Miller R D.Freezing and heaving of saturated and unsaturated soils[J].Highway Res Record.1972(393),1.
9 Konrad J M,Morgenstern N R.The segregation potential of a freezing soil[J].Canadian Geotech J,1981,18:482.
10 Penner E.Fundamental aspects of frost action[R].Int Symp on Frost Action in Soils.Sweden,1977.
11 Takeda K,Okamura A.Microstructure of freezing front in freezing soils[C]//International Symposium on Ground Freezing.Netherlands:Lulea University of Technology,1997:171.
12 Shi Bin,Jiang Hongtao.A study on the development of failures inside soil under the external force using CT technique[J].Chin J Geotech Eng,2000(5):537(in Chinese).施斌,姜洪涛.在外力作用下土体内部裂隙发育过程的CT研究[J].岩土工程学报,2000(5):537.
13 Cheng Zhanlin,Zuo Yongzhen,Ding Hongshun.Application oi CT technology in geotechnical mechanics[J].J Yangtze River Scientific Research Institute,2011(3):33(in Chinese).程展林,左永振,丁红顺.CT技术在岩土试验中的应用研究[J].长江科学院院报,2011(3):33.
14 Liu Zengli,Zhang Xiaopeng,Li Hongsheng.A damage constitutive model lor irozen soils under uniaxial compression based on CT dynamic distinguishing[J].Rock Soil Mech,2005(4):542(in Chinese).刘增利,张小鹏,李洪升.基于动态CT识别的冻土单轴压缩损伤本构模型[J].岩土力学,2005(4):542.
15 Sun Xingliang,Wang Ren,Hu Mingjian.A CT-timely experimental study on meso-scopic structural damage development oi irozen soil under triaxial shearing[J].Rock Soil Mech,2005(8):1298(in Chinese).孙星亮,汪稔,胡明鉴.冻土三轴剪切过程中细观损伤演化CT动态试验[J].岩土力学,2005(8):1298.
16 Zheng Jianieng,Zhao Shuping,Ma Wei,et al.Application oi CT testing technology in evaluating the uniformity oi soil samples[J].J Lanzhou University:Nat Sci,2009(2):20(in Chinese).郑剑锋,赵淑萍,马巍,等.CT检测技术在土样初始损伤研究中的应用[J].兰州大学学报:自然科学版,2009(2):20.
17 Torrance J K,Elliot T,Martin R,et al.X-ray computed tomography of frozen soil[J].Cold Regions Sci Technol,2008,53:75.
18 Chen Aijun,Study on the filling heave classification of the railway subgrade[D].Beijing:China Academy of Railway Science,2006(in Chinese).程爱君,铁路路基填料的冻胀性分类研究[D].北京:铁道科学研究院,2006.
19 Ye Yangsheng,Wang Zhongjin,Chen Aijun,et al.Frost heave classification of railway subgrade filling material and the design of anti-freezing layer[J].China Railway Sci,2007,28(1):1(in Chinese).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.
20 Zhang Yichen,Li Xin,Zhang Xifa,et al.Research on frost heave susceptibility and classification of coarse grained soil of highway subgrade in seasonally frozen ground region[J].Chin J Geotech Eng,2007,29(10):1522(in Chinese).张以辰,李欣,张喜发,等.季冻区公路路基粗粒土的冻胀敏感性及分类研究[J].岩土工程学报,2007,29(10):1522.
21土工试验方法标准(GB/J50123-1999)[S].中国计划出版社,1999:6.
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