| 黄土路基沉降曲线特征分析 |
| |
| 引用本文： | 王婷,郑建国,邵生俊.黄土路基沉降曲线特征分析[J].岩土力学,2009,30(Z2):494-498. |
| |
| 作者姓名： | 王婷 郑建国 邵生俊 |
| |
| 作者单位： | 王婷,郑建国(机械工业勘察设计研究院,西安,710043);邵生俊(西安理工大学,岩土工程研究所,西安,710048) |
| |
| 摘 要： | 在分析郑西客运专线试验段路基沉降实测资料的基础上,提出沉降变形常规预测方法受观测时间及单次观测结果的影响比较大,不利于用来预测最终沉降.通过分析现场沉降变形与时间关系曲线,提出路基沉降的发展主要受固结的影响,其发展是一个从沉降增加到趋缓的过程,可以明显分为固结变形及流变变形,并用非饱和土等效固结理论加以解释,提出了一种利用s-曲线特征预测最终沉降量的方法,经检验对比发现其预测结果受观测时间及单次观测结果的影响比较小,优于其它常规预测方法.
|
| 关 键 词： | 沉降曲线 预测 双曲线法 三点法 指数曲线法 星野法 Asaoka法 泊松曲线法 |
| 收稿时间： | 2009-08-10 |
Analysis of characteristics of settlement curve of loess roadbed |
| |
| WANG Ting,ZHENG Jian-guo,SHAO Sheng-jun.Analysis of characteristics of settlement curve of loess roadbed[J].Rock and Soil Mechanics,2009,30(Z2):494-498. |
| |
| Authors: | WANG Ting ZHENG Jian-guo SHAO Sheng-jun |
| |
| Institution: | 1.China Jikan Geotechnical Institute, Xi’an 710043, China; 2.Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an 710043, China |
| |
| Abstract: | The article puts forward that the observation time and single observation result have large effects on the final settlement which is predicted by conventional forecasting methods based on analyzing Zhengzhou-Xi'an passenger dedicated line test section subgrade settlement. As a result, predictive value may not real value. The article puts forward that the development of subgrade settlement is an easing up process. It can be significantly divided into consolidation deformation stage and rheological deformation stage based on the bases of analyzing subgrade settlement deformation curve. The viewpoint can be explained by equivalent consolidation theory. The article puts forward the method for predicting final settlement according to s-curve characteristics. The practice shows that the observation time and single observation result have very small effects on the final predict settlement. It is better than any other methods. |
| |
| Keywords: | settlement curve prediction hyperbola method three point method exponential curve method hushino method Asaoka method Poisson curve method |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
