| 基于Weibull曲线的软基沉降预测模型分析 |
| |
| 引用本文： | 王伟,卢廷浩.基于Weibull曲线的软基沉降预测模型分析[J].岩土力学,2007,28(4):803-806. |
| |
| 作者姓名： | 王伟 卢廷浩 |
| |
| 作者单位： | 1. 绍兴文理学院,土木工程系,绍兴,312000;河海大学,岩土工程研究所,南京,210098
2. 河海大学,岩土工程研究所,南京,210098 |
| |
| 摘 要： | 结合软基沉降机理，提出用Weibull模型预测软基沉降全过程。该预测模型参数意义较为明确，可以反映加载速度等因素的影响，克服了其它两种成长模型反弯点处沉降值与最终沉降相对不变的缺点。在利用其它模型预测时，只有初步判断实测样本反弯点的位置才能较科学的选择有效样本和相应模型进行预测。Weibull模型可以充分利用沉降观测样本，具有广泛的适应性，指数模型是它的一种退化形式。它不但可以预测线性加载的软基沉降，而且可以预测一次加载或近似一次加载的软基沉降。工程实例的实测和计算比较说明该模型是可靠的。
|
| 关 键 词： | 软基沉降 Weibull模型 成长曲线 指数模型 反弯点 |
| 文章编号： | 1000-7598-（2007）04-0803-05 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005-05-20 |
Study on prediction model of soft foundation settlement based on Weibull curve |
| |
| WANG Wei,LU Tinghao.Study on prediction model of soft foundation settlement based on Weibull curve[J].Rock and Soil Mechanics,2007,28(4):803-806. |
| |
| Authors: | WANG Wei LU Tinghao |
| |
| Institution: | 1. Department of Civil Engineering, Shaoxing College of Art and Science, Shaoxing 312000, China; 2. Institute of Geotechnical Engineering，Hohai University，Nanjing 210098, China |
| |
| Abstract: | Based on mechanism of soft foundation settlement, a method with Weibull model to predict the settlement is presented. Parameters of this method have explicit physical meanings. Because of considering loading velocity and construction art, the presented method overcomes deficiency of traditional methods that the ratio of settlement at inflection point to ultimate settlement is relative constant. While making using of other prediction methods, deciding inflection point of observed settlement samples is a necessity to scientifically choose settlement prediction model and relevant observed data. The Weibull model can make good use of observed settlement sample; and exponential model is one of its degradation types; so it is available to both linear and transient loading conditions. Finally, good agreements are obtained between calculating results and field measuring data. |
| |
| Keywords: | settlement of soft foundation Weibull model growth curve exponential model inflection point |
| 本文献已被 CNKI 维普 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 |
