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| Experimental Research on Mechanical Characteristics of Red Rock Filling for Subgrade of High-speed Railway |
| HU An-Hua1, JIANG Guan-Lu1, WANG Zhi-Meng1, WEI Yong-Xing2 |
| 1.Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 2.China Railway Eryuan Engineering Group Co. Ltd, Chengdu, Sichuan 610031, China |
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Abstract Research purposes: The main researches are done on the heavy tamping property, CBR bearing ratio, expansibility under simulated load of subgrade, unconfined strength, tri-axial shear strength and modulus of compression for the purpose of verifying the feasibility of using red rock as the filling for high-speed railway.
Research results: Through doing researches, the mechanical and physics characteristics of red rock are obtained, such as the maximum dry density, optimum moisture content, shear strength characteristics under saturated and non-saturated conditions, CBR, expansive characteristic and so on. In combination with the experimental research and construction conducted in Dazhou-Chengdu Railway, the analysis of deformation characteristics of high embankment under saturated and non-saturated conditions are made and also the proposals are made to application of red rock as filling materials in filling subgrade.
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Received: 31 July 2007
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[2]GBJ 112-87,膨胀土地区建筑技术规范[S].
[3]中华人民共和国行业标准编写组.京沪高速铁路设计暂行规定[S].北京:中国铁道出版社,1998.
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2008, Vol. 25 
