合宁客运专线石灰改良膨胀土路基试验研究

Experimental Research on the Improving Expansive Soil Subgrade of Hefei-Nanjing Railway Passenger Dedicated Line with Lime

研究目的:为克服合宁客运专线大量中弱膨胀土遇水膨胀、脱水干缩不能直接作为路基填料的特性,本文特结合合宁客运专线全椒路基试验工程,进行膨胀土填料的室内石灰改良试验、填筑工艺试验等研究。研究结论:经过试验研究及工后沉降观测分析,得出石灰作为膨胀土的改良剂并通过改进的施工工艺进行实施,能满足客专线路基填料的各项指标和要求。

Research purposes:In combination with the experimental engineering of Quanshu Subgrade of Hefei-Nanjing Railway Passenger Dedicated Line,the researches are done on the indoor limb improvement test for the filling materials of expansive soil and filling technique test for the purposes of solving the problems that the weak expansive soil along Hefei-Nanjing Railway Passenger Dedicated Line expands when watering and can not be used directly as filling materials of subgrade after syneresis. Research results:The...