%0 Journal Article
%T 基于χ2检验法的轨道交通线下工程变形分析方法研究<br>Research on the deformation analysis method of railway underline engineerings based on theχ2 test
%A 张拯
%A 张献州
%A 高山
%A 邱颖新
%A 杨宏
%A 张正国
%A 罗奕&lt
%A br&gt
%A ZHANG Zheng
%A ZHANG Xianzhou
%A GAO Shan
%A QIU Yingxin
%A YANG Hong
%A ZHANG Zhengguo
%A LUO Yi
%J 铁道科学与工程学报
%D 2016
%X 运营维护期轨道交通线下工程受动、静态荷载及复杂环境因素影响,其变形规律常呈现“小量级、大波动”的特点,而采用曲线拟合方法很难捕捉此种变形规律。目前常采取的方法是根据经验对沉降变形曲线总体的收敛状水平及其发展趋势做出判定。这种做法缺乏一定的科学性、严谨性。对于无法通过曲线回归方法预测的沉降监测点,寻找一种科学的判断标准十分必要。研究利用统计假设检验中χ2检验法进行沉降评估,结果表明,对于“小量级、大波动”的变形规律,χ2检验法可作为一种科学合理的沉降分析和判定方法。<br>Railway underline engineerings during operation and maintenance period usually bear the influence of dynamic and static load of train operation and complex factors of monitoring environment. Thus, it is hard to obtain good effect when predicting this deformation trend of such characteristics by curvilinear regression fitting methods. At present, the overall convergence level and developing trend of settlement curves will be decided based on experience. Obviously, such methods are neither scientific nor precise. It is urgent to find certain scientific standard for these settlement points whose deforming regular can’t be predicted by curve regression methods. This paper studied the theχ2 test for settlement assessment, the results show that theχ2test can be taken as a scientific and reasonable method of settlement analysis and judgement
%K 轨道交通线下工程
%K 复杂监测环境
%K 小量级大波动变形
%K χ2检验法
%K 沉降分析统计量&lt
%K br&gt
%K railway underline engineerings
%K complex monitoring environment
%K small scale and large fluctuations
%K test
%K statistics of settlement analysis
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_311951