| 基于沉降资料反演固结系数的方法研究 |
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| 引用本文： | 邓永锋,刘松玉,洪振舜.基于沉降资料反演固结系数的方法研究[J].岩土力学,2005,26(11):1807-1809. |
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| 作者姓名： | 邓永锋 刘松玉 洪振舜 |
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| 作者单位： | 东南大学 交通学院，南京 210096 |
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| 基金项目： | 教育部博士点基金项目资助（No.2001028618）和东南大学优秀博士学位论文基金资助（No.YBJJ0411）. |
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| 摘 要： | Asaoka法在岩土工程中经常用于工后沉降的预测，同时Asaoka方法中的 - 直线的斜率 和固结系数 的关系还被广泛用于反演地基的固结系数。但相关资料表明用该方法反演得到固结系数与地基的固结系数存在一定的误差。为此分析了产生误差的原因，并在此基础上，根据Terzaghi一维固结理论推导了的 - 直线的斜率 和固结系数 之间的表达式。分析表明采用推导得到的 - 表达式反演的固结系数与地基的固结系数能够较好地吻合。
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| 关 键 词： | Asaoka法 Terzaghi固结理论 固结系数 反演 沉降数据 |
| 文章编号： | 1000-7598-（2005）11-1807-03 |
| 收稿时间： | 2004-05-30 |
| 修稿时间： | 2004-05-302004-12-05 |
Back analysis of consolidation coefficient with in-situ settlement data |
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| DENG Yong-feng,LIU Song-yu,HONG Zhen-shun.Back analysis of consolidation coefficient with in-situ settlement data[J].Rock and Soil Mechanics,2005,26(11):1807-1809. |
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| Authors: | DENG Yong-feng LIU Song-yu HONG Zhen-shun |
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| Institution: | College of Transportation, Southeast University, Nanjing 210096, China |
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| Abstract: | The Asaoka method has often been used to predict the post-construction settlement in geotechnical engineering and the consolidation coefficient can be calculated with the quantitative expression of consolidation coefficient Cv versus the slopeβ1 of the Si-Si+1 straight line in the Asaoka’s method based on the observed settlement data. However, it has been reported that the back-analyzed consolidation coefficients with the Asaoka’s method are not consistent with the in-situ one. This study investigated this discrepancy, and propsoed a new method for calculating the consolidation coefficient based on one-dimensional Terzaghi’s consolidation theory. The back-analyzed consolidation coefficients with the new expression are quite consistent with the in-situ one. |
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| Keywords: | Asaoka method Terzaghi consolidation theory consolidation coefficient back analysis settlement aata |
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