| 地基非线性沉降计算的原状土割线模量法 |
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| 引用本文： | 杨光华,王鹏华,乔有梁.地基非线性沉降计算的原状土割线模量法[J].土木工程学报,2007,40(5):49-52. |
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| 作者姓名： | 杨光华 王鹏华 乔有梁 |
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| 作者单位： | 1. 广东省水利水电科学研究院,广东广州,510610;华南理工大学,广东广州,510640
2. 华南理工大学,广东广州,510640 |
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| 摘 要： | 地基的沉降计算如何较准确而又简便是工程实践中一直未很好解决的问题。为较好解决地基沉降计算这一重要难题,提出一种原状土割线模量法,就是利用原状土的压板试验曲线,假定压板试验曲线符合双曲线方程,利用Bussinesq解,建立不同荷载水平下土体的等效割线模量。对于实际基础,则根据土体不同深度的应力水平,从压板试验曲线确定原状土的割线模量,然后用于分层总和法进行地基非线性沉降计算,通过试验曲线的验证和实际工程的应用,证明该方法效果较好,可较准确计算地基的沉降。
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| 关 键 词： | 原状土 割线模量 分层总和法 非线性沉降 |
| 文章编号： | 1000-131X(2007)05-0049-04 |
| 修稿时间： | 2006年6月20日 |
An undisturbed-soil secant modulus method for calculation of nonlinear settlement of soil foundations |
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| Yang Guanghua,Wang Penghua,Qiao Youliang.An undisturbed-soil secant modulus method for calculation of nonlinear settlement of soil foundations[J].China Civil Engineering Journal,2007,40(5):49-52. |
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| Authors: | Yang Guanghua Wang Penghua Qiao Youliang |
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| Abstract: | How to calculate soil foundation settlement simply as well as accurately is still an issue not well resolved in engineering design.An undisturbed-soil secant modulus method is presented by using the in-situ plate loading curve that is assumed as a hyperbola.The equivalent secant modulus of the undisturbed soil is determined under different stress levels based on the Bussinesq's solution.Using this undisturbed-soil secant modulus method in combination with layer-wise summation to compute the settlement of a foundation yields results that are in good agreement with the observations. |
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| Keywords: | undisturbed soil secant modulus layer-wise summation method nonlinear settlement |
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