泥质粉砂岩化学改良土动力特性测试与分析

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Abstract Research purposes: The chemical improved soil of weathered argillaceous siltstone was used as the filling material of the subgrade of the Wuhan － Guangzhou High － speed Railway． The smooth and safe running of the high －speed train need the sub － rail support system with small settlement，high stiffness and stable dynamic characteristics． In order to research the dynamic characters of the chemical improved soil subgrade of weathered argillaceous siltstone，the dynamic test components were placed in the test section to test the dynamic chatacters of the chemical improved soil subgrade of weathered argillaceous siltstone when the CRH3 EMU runs at the speed over 300 km/h．

Research conclusions: The dynamic test result showed that the chemical improved soil of weathered argillaceous siltstone could be as the filling material of the subgrade of high － speed railway when it had good compression strength and compactness． It is dynamic responses characteristics were similar to the subgrade of A、B groups fillings and fit the dynamic characters of the ballastless track system．

Key words： high － speed railway completely weathered argillaceous siltstone chemical improved test on site dynamic character

Received: 31 December 2011

PACS:

U238

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Cite this article:

ZHAO Yong. Test and Analysis of Dynamic Character of Chemical Improved Soil of Argillaceous Siltstone for Subgrade of High － speed Railway[J]. 铁道工程学报, 2012, 29(3): 22-25.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2012/V29/I3/22

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