客运专线 CFG桩复合地基沉降预测分析

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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。

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	汪江
	卢国胜

关键词 ： CFG桩, 复合地基, 沉降预测方法, 数据磨光

Abstract：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 max imum relative coefficients while the measured values obtained from the hyperbolic method are the biggest.

Key words： CFG pile composite foundation settlement prediction data polishing

收稿日期: 2010-08-25

PACS:

U213. 1

作者简介: 汪江, 1982年出生, 男 , 西南科技大学环境与资源学院硕士研究生; 卢国胜, 1964年出生, 男 , 西南科技大学, 教授。

引用本文:

汪江，卢国胜. 客运专线 CFG桩复合地基沉降预测分析[J]. 铁道工程学报, 2010, 27(11): 1-4.
WANG Jiang, LU Guo-sheng. Analysis of Prediction of Settlement of CFG Pile Composite Foundation of Passenger Dedicated Line. 铁道工程学报, 2010, 27(11): 1-4.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2010/V27/I11/1

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