高速铁路路基连续压实质量检测指标CMV影响因素分析  

Study on factors of continuous compaction measured value in subgrade of high-speed railway

作　　者：范娟[1] 宋晓东 田利锋[3] 聂志红[1] 

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]沪昆客专湖南有限公司,湖南长沙400018 [3]中铁一局集团第三工程公司,陕西宝鸡721006

出　　处：《铁道科学与工程学报》2015年第3期463-467,共5页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51478481);铁道部科技研究开发计划资助项目(2010G018-B-3-2)

摘　　要：为定量分析振动压路机工艺参数对压实质量连续检测参数的影响程度,基于正交试验设计原理,以压实质量连续检测指标CMV值为研究对象,以振动压路机振幅、振动频率、碾压速度以及行驶方向为影响因素,在沪昆高铁芷江试验段开展压实质量连续检测试验。研究结果表明:振幅、振动频率和碾压速度对CMV值的影响高度显著,行驶方向对CMV值的影响显著,影响程度依次为振幅>振动频率>碾压速度>行驶方向。根据CMV值的变异系数确定使CMV值最为稳定的振动压路机压实工艺参数,并以稳定状态下的CMV值为基准,建立回归方程,对其他压实工艺参数条件下的CMV值进行修正。For quantitative analysis of the vibratory compaction technology parameters on the influence degree of continuous compaction measured value ,based on the orthogonal experimental design, CMV was taken as the research ob- ject, the amplitude , excitation frequency, roller speed and driving direction was selected as the factors; the continuous compaction check in Zhijiang construction site of Shanghai - Kunming High - Speed Railway was carried out. The results demonstrate that the amplitude, excitation frequency and roller speed have a highly significant effect on CMV, driving direction has an obvious influence on CMV; and the degree follows by ： amplitude 〉 excitation frequency 〉 roller speed 〉 driving direction. According to the coefficient of variation of CMV, determining the vibratory compaction technology parameters, which make CMV the most stable; Based on the steadystate CMV, a regression model was established to correct the CMV under the condition of the other vibratory compaction technology parameters. This paper provides a new method to improve the stability of the continuous compaction value.

关 键 词：压实质量连续检测 正交试验设计 变异系数 回归分析 

分 类 号：TU435[建筑科学—岩土工程]