|
|||||
|
|
| 软土路基变形的时序建模及应用研究 | |
| 引用本文： | 夏银飞,张季如,XIA Yuan you.软土路基变形的时序建模及应用研究[J].土工基础,2007,21(2):59-63. |
| 作者姓名： | 夏银飞 张季如 XIA Yuan you |
| 作者单位： | 1. 武汉科技大学科学学院,武汉,430070 2. 武汉科技大学土木工程与建筑学院,武汉,4300700 3. Sch. of C. E. and Arch. , Wuhan Univ. of Tech. , Wuhan 430070, China |
| 摘 要： | 鉴于高速公路施工的被动性,利用时间序列建立数学模型。对具有非平稳性的表面沉降进行一次差分(d=1)处理,使其转化为具有平稳性的沉降速率问题,即将非平稳性时间序列ARI MA(p, d, q)模型转化为平稳的ARMA(p, q)模型。建立了ARMA(1 ,1)模型来对公路施工填筑期间的沉降进行短期预测,进而对下一级加载的时间进行预测。结果表明,预测结果可靠,精度高,能够很好地反映填筑期间沉降的变形特性,适用于高速公路重点断面分析。 |
| 关 键 词： | 时间序列 表面沉降 沉降速率 短期预测 加载 |
| 文章编号： | 1004-3152(2007)02-0059-05 |
| 修稿时间： | 2006年9月21日 |
Application of Time Series in Constructing Subgrade |
|
| XIA Yin fei,ZHANG Ji ru,XIA Yuan you.Application of Time Series in Constructing Subgrade[J].Soie Engineering and Foundation,2007,21(2):59-63. | |
| Authors: | XIA Yin fei ZHANG Ji ru XIA Yuan you |
| Abstract: | Mathematic models are established with time series for the passivity of expressway construction. The unrest surface's settlement is converted into rest settlement velocity by dealing with simple difference (d=1), namely the unrest time series ARIMA(p, d, q) model is transformed to rest ARMA(p, q) model. ARMA(1, 1) model is established to forecast the settlement during constructing subgrade and the time for next load. The forecast results are precise and reliable, and can reflect the distortion characteristics during constructing subgrade. |
| Keywords: | time series surface settlement settlement velocity short-term forecast load |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
