Discuss on the Column-Net Structure of Ballastless Track in Sui-Yu Railway Line
XIAO Hong1, JIANG Guan-lu1, WEI Yong-xing2
1.Southwest JiaoTong university, Sichuan, Chendu 610031, China; 2.The Second Survey and Design Institution of China Railway, Sichuan, Chengdu 610031, China
Abstract：Research purposes: The exploration is made on issues of design calculation theory for Column-Net Structure technology of foundation treatment of Ballastless Track in Sui-Yu Railway Line.
Research methods: The article reviewed the present situation of construction of Ballastless Track in the Passenger Transportation Line in China. Based on experimental section of Unballasted Track on soil subgrade in Sui-Yu Railway Line, design calculation theory of Column-Net Structure has been carried on detailed explanation, including the constitution research, the flexible arch research, bearing capacity research and settlement research. Considered to the interaction complexity of the column, net and soil under the train cyclic load, the paper detailed describes indoor large scale model testing, field dynamic testing and numerical calculation method about the Column-Net Structure.
Research results: The method of design calculation for Column-Net Structure has been carried on the summary. And the paper describes the developed research in experimental section. It hopes that these can provide more experiences for further research.
2006, Vol. 23 
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