摘要研究目的：在武广高速铁路设计中，首次将泥质粉砂岩全风化物化学改良土用作高速铁路路基本体填料。高速列车的平稳、安全运营，需要路基结构物提供沉降小、刚度大、动力特性稳定的轨下支撑系统。为研究泥质粉砂岩全风化物化学改良土路基的动力特性，在试验段中预埋设动测元件，CRH3 动车以300 km/h 以上速度行驶时，测试泥质粉砂岩全风化物化学改良土路基的动力特性。
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．
赵勇. 泥质粉砂岩化学改良土动力特性测试与分析[J]. 铁道工程学报, 2012, 29(3): 22-25.
ZHAO Yong. Test and Analysis of Dynamic Character of Chemical Improved Soil of Argillaceous Siltstone for Subgrade of High － speed Railway. 铁道工程学报, 2012, 29(3): 22-25.
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2012, Vol. 29 
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