基于牛顿插值法的软土压实特性应用研究

详细信息    查看全文 | 推荐本文 |

英文篇名：Application Research on Compaction Characteristics of Soft Clay Based on Newton Interpolation Method 作者：戴仁辉 ; 陈士军 ; 王增亮 ; 易进翔 英文作者：DAI Renhui;CHEN Shijun;WANG Zengliang;YI Jinxiang;School of Architectural Engineering,East China University of Technology; 关键词：湖泊沉积软土 ; 击实试验 ; 牛顿插值 ; 拟合 ; 三维可视化图 英文关键词：lake sediment soft clay;;compaction tests;;Newton interpolation;;fitting;;three-dimensional visual plots 中文刊名：GCZL 英文刊名：Construction Quality 机构：东华理工大学建筑工程学院; 出版日期：2019-03-10 出版单位：工程质量 年：2019 期：v.37;No.344 基金：江西省自然科学基金(2120000135) 语种：中文; 页：GCZL201903018 页数：5 CN：03 ISSN：11-3864/TB 分类号：73-77

摘要

针对湖泊沉积软土的压实特性问题,开展了不同含水率和不同击实功下的击实试验,在常规试验基础上,采用牛顿插值方法进行软土的压实特性分析。结果表明:湖泊沉积软土的最大干密度及其最优含水率不是定值。随着击实次数的增加,软土的最大干密度逐渐增加,最优含水率逐渐减小。牛顿插值函数对不同击数下软土的含水率与干密度关系曲线,具有很好的拟合效果。文中给出了干密度三维可视化图,曲线更加圆滑,相对于试验结果更为精确。
        Aiming at studying the compaction characteristics of lake sediment soft clay,a serial of compaction tests subjected to different water content and compaction work were conducted. Based upon the regular laboratory tests,the compaction characteristics of soft clay were analyzed by means of Newton interpolation method. The test results indicate that the maximum dry density and optimum moisture content of soft clay are not constants. That is,the maximum dry density increases with the increasing hammering numbers,while the optimum moisture content declines correspondingly. The Newton interpolation functions show quite satisfying fitting effects,for the relationship curve between water content and dry density of soft clay subjected to different hammering numbers. Three-dimensional visual plots of dry density,of which the smoothing property is better improved,are provided,and therefore is more accurate compared to testing results.

引文

[1]《工程地质手册》编委会.工程地质手册(第五版)[M].北京:中国建筑工业出版社,2018.
    [2]卢廷浩.土力学[M].南京:河海大学出版社,2004.
    [3]中华人民共和国水利部.土工试验方法标准:GB/T 50123-1999[S].北京:中国计划出版社.1999.
    [4]宋新江.击实试验中压实性指标的精确计算法[J].治淮,2001,50(7):24-25.
    [5]陈上及,马继瑞.海洋数据处理分析方法及其应用[M].北京:海洋出版社,1991.
    [6]赖志柱,张云艳.牛顿插值法的多种讲解思路分析研究[J].贵州工程应用技术学院学报,2015,33(2):144-147.
    [7]易进翔,杨康迪.固化污泥填埋处置中的压实特性研究[J].水利与建筑工程学报,2013,11(1):70-73.
    [8]刘涛,袁敏.软土强夯法加固软土地基应用探析[J].工程质量,2011,29(11):60-63.
    [9]饶俊勇,彭德刚,何利君.堆载预压法在处理灰堤软土地基中的应用[J].电力勘测设计,2018,25(5):1-5.
    [10]宋碧宏,王梁.填石挤淤及强夯法在盐渍湖软土路基处理中的应用[J].工程质量,2011,29(1):42-44.
    [11]张效龙,徐家升,刘敦武.河口滨海区浅层海积软土工程特性研究[J].东华理工大学学报(自然科学版),2008,31(3):259-264.
    [12]王泽文.数值分析与算法[M].北京:科学出版社,2016.
    [13]Mei Zhang,Wei Xiao.Construct and realization of Newton interpolation polynomial based on matlab 7[J].Procedia Engineering,2011,15:3831-3835.
    [14]Amy M.Fu,Alain Lascoux.A Newton type rational interpolation formula[J].Advances in Applied Mathematics,2008,41:452-455.