| 软土路基线性加载沉降曲线的研究 |
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| 引用本文： | 王伟,卢廷浩,王晓妮.软土路基线性加载沉降曲线的研究[J].岩土力学,2006,27(5):791-794. |
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| 作者姓名： | 王伟 卢廷浩 王晓妮 |
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| 作者单位： | 1.绍兴文理学院 土木工程系，绍兴 312000；2.河海大学 岩土工程研究所，南京 210098 |
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| 摘 要： | 分析了线性加载路基沉降的机理，直接从一维固结度出发，证明了沉降曲线呈S形状。对Gompertz模型、Logistic模型、Weibull模型等3种呈S形状的成长模型进行数学分析。前两种模型虽然使用广泛，但不能反映加载速率和施工方法的影响，反弯点处沉降值与最终沉降相对不变，用它们进行基础全程沉降模拟具有一定的局限性；相对而言，Weibull模型具有较强的适用性。最后对路基沉降模拟提出了建议。
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| 关 键 词： | 路基沉降 孔压滞后 固结度 S形曲线 最终沉降 拐点 |
| 文章编号： | 1000-7598-（2006）05-0791-04 |
| 收稿时间： | 2004-08-16 |
| 修稿时间： | 2004-11-16 |
Study on settlement curve of ramp loading roadbed on soft ground |
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| WANG Wei,LU Ting-hao,WANG Xiao-ni.Study on settlement curve of ramp loading roadbed on soft ground[J].Rock and Soil Mechanics,2006,27(5):791-794. |
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| Authors: | WANG Wei LU Ting-hao WANG Xiao-ni |
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| 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 |
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| Abstract: | Mechanism of settlement of ramp loading roadbed on soft ground is analyzed;and proof of settlement-time curve appearing S-shape is conducted directly based on consolidation degree of one-dimension soil consolidation theory.Mathematical analyses of Gompertz,logistic,Weibull growth model that appearing S-shape are conducted.Although Gompertz,logistic growth models are adopted extensively to predict settlement of ramp loading roadbed,they have deficiencies such as:(1)neglecting loading velocity;(2)neglecting construction art;(3) relative constant ratio of settlement at inflection point to ultimate settlement.Good usability of Weibull growth model is pointed out.Finally,suggests on prediction of soft roadbed settlement are proposed. |
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| Keywords: | settlement of roadbed consolidation degree S-shape curve ultimate settlement inflection point |
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