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| Experimental Study of the Granitic Regolith and Improved Soil |
| RAN Long-fei1 LIU Yang2 |
| 1 .Hainan Zhenhai Engineering Co.，Ltd of China Railway 12th Bureau Group，Haikou，Hainan 570206，China 2. China Railway Eryuan Engineering Group Co. Ltd，Chengdu，Sichuan 610031，China |
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Abstract Research purposes: High speed passenger dedicated lines have strict requirements to roadbed deformation. Although fully weathered granite and its improved soil has been widely used in highway projects，however, it is still rare that the fully weathered granite and its improved soil used for high-speed railway at home and abroad. Therefore，the strength mechanism，compression feature，the water stability and the attenuation of shear strength of the granitic regolith and its improved soil are studied in this paper.
Research conclusions:From the experimental study of the granitic regolith and its improved soil，it is concluded that the plastic index decreases with the increasing of the cement:the optimum water content shows little change，however , mechanical properties of granitic regolith are increased with the increasing of the cement. The fully weathered granite and its improved soil can be used for high-speed railway，which provides a reference to the similar engineering, and there is an important theoretical value and engineering practical significance.
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Received: 26 October 2013
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[1]周援衡，王永和，卿启湘，等.全风化花岗岩改良土路基的长期稳定性试验研究[J].岩土力学，2011(增刊1): 596-602.
Zhou Yuanheng, Wang Yonghe, Qing Qixiang, etc. Experimental Study of Long-term Stability of Improved Granitic Residual Soil Subgrade for High- speed Railway[J].Rock and Soil Mechanics , 2011 (S1):596-602.
[2]李志勇，曹新文，谢强.全风化花岗岩的路用动态特性研 究[J].岩土力学，2006(12):2269-2272.
Li Zhiyong , Cao Xinwen , Xie Qiang. Test Study of Dynamic Characteristics of Granitic Residual Soil for High-speed Railway Subgrade[J].Rock and Soil Mechanics , 2006 (12 ) : 2269-2272.
[3]何群.全风化花岗岩高速铁路路基的动力特性及稳定性 研究[n].长沙:中南大学，2007
He Qun. The Research of Stability and Dynamic Characteristic for Fully Effloresced Granite Embankment Filling in High-speed Railway [ D ].Changsha: Central South University, 2007.
[4]杨广庆，管振祥.高速铁路路基改良填料的试验研究 [J].岩土工程学报，2001(6):682-685.
Yang Guangqing, Guan Zhenxiang. Experimental Study on Improved Soil for High-speed Railway Subgrade[J].Chinese Journal of Geotechnical Engineering , 2001(6) :682-685.
[5]周援衡，王永和，卿启湘，等.全风化花岗岩改良土高速 铁路路基填料的适宜性试验研究[J].岩石力学与工程学 报，2011(3):625-634.
Zhou Yuanheng , Wang Yonghe , Qing Qixiang , etc. Experimental Study of Appropriateness of Improved Granitic Residual Soil for High-speed Railway Subgrade[J].Chinese Journal of Rock Mechanics and Engineering , 2011(3) : 625-634.
[6]铁建设函[2005]754号，客运专线无昨轨道铁路设计指 南[S].
Railway Construction Letter [ 2005 ] No. 754 , Ballastless Track Design Guide[S].
[7]魏永幸，薛新华.客运专线无作轨道铁路复合地基沉降 预测研究[J].铁道工程学报，2012(10):28-30.
Wei Yongxing, Xue Xinhua. Study on the Settlement Prediction of Passenger Dedicated Railway Composite Foundation[J].Journal of Railway Engineering Society , 2012 (10) : 28-30.
[8]薛新华，魏永幸.铁路复合地基沉降计算研究[J].铁道 工程学报，2011(10):42-45.
Xue Xinhua, Wei Yongldng. Study on the Settlement Calculation of Railway Composite Foundation[J]. Journal of Railway Engineering Society , 2011(10 ) : 42- 45.
[9]薛新华，魏永幸.基于ANFIS的CFG桩复合地基承载力 预测研究[J]铁道工程学报，2010(5):42-47.
Xue Xinhua, Wei Yongxing. Study on Prediction of Bearing Capacity of CFG Pile Composite Foundation with ANFIS[J].Journal of Railway Engineering Society , 2010 ( 5 ) : 42-47.
[10]魏永幸，薛新华.桩网结构路基沉降计算方法探讨[J]. 铁道工程学报，2010(10):36-40.
Wei Yongxing. Xue Xinhua. Disccusion on Calculation Method for Settlement of Pile-net Structure Subgraed [J].Journal of Railway Engineering Society, 2010 (10):36-40.
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2014, Vol. 31 
