摘要
研究目的:对采用CFG桩复合地基进行处理的某客运专线路基的沉降分别采用工程上常用的4种预测方法:双曲线图解法,双曲线法,三点法,指数法进行预测分析;并采用五次多项式对实测沉降数据进行磨光处理,极大程度上避免了由测量带来的误差以及实测沉降数据的非等时距性,为类似地基处理方式的沉降预测提供借鉴。研究结论:采用五次多项式插值可以避免因环境等,带来测量误差,使沉降曲线变得光滑;避免了因观测的不等时性而带来的选点困难;从四种预测方法的结果看,三点法预测效果最好,相关系数也最大,双曲线法预测结果最大。
Research purposes： The analyses were made for the prediction of the settlement of the CFG pile composite foundation of one passenger dedicated line predicted with the hyperbolic graphic method,the hyperbolic method,three-point method and the index method.The actual measured settlement data were polished by using quintic multinomial.By doing so,the error produced in the measurement and the non-isochronism of the actual measured settlement data can be eliminated and it can provide the reference to the similar works.Research conclusions：Application of the interpolation of the quintic multinomial can eliminate the error caused by environment factors and the difficulty in selection of measurement spot caused by the non-isochronism in measurement to make the settlement curve smooth.From the prediction results obtained from the four methods mentioned above it can be seen the result obtained from the three-point method is good,getting the maximum relative coefficients while the measured values obtained from the hyperbolic method are the biggest.
出处
《铁道工程学报》
EI
北大核心
2010年第11期1-4,共4页
Journal of Railway Engineering Society
关键词
CFG桩
复合地基
沉降预测方法
数据磨光
CFG pile
composite foundation
settlement prediction
data polishing
