| 基于弹性地基梁理论的土工格室加筋体变形分析 |
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| 引用本文： | 赵明华,张玲,曹文贵,马缤辉.基于弹性地基梁理论的土工格室加筋体变形分析[J].岩土力学,2009,30(12):3695-3699. |
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| 作者姓名： | 赵明华 张玲 曹文贵 马缤辉 |
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| 作者单位： | 湖南大学 岩土工程研究所，长沙 410082 |
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| 基金项目： | 国家863计划资助项目，湖南省研究生创新基金 |
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| 摘 要： | 在土工格室处理软土路基加固机制研究的基础上，针对土工格室加筋体的受力变形特点，将格室体视为置放于Winkler地基上的连续长梁，基于传统的弹性地基梁理论，建立考虑水平摩阻力影响的土工格室加筋体的挠曲变形微分方程，并给出其幂级数解答，从而得到了土工格室加筋体在集中荷载作用下的变形计算方法，为土工格室加固处理后的软土路基沉降计算提供了依据。理论与试验结果对比分析表明，在格室体变形分析中不计水平摩阻力的影响将夸大格室体在荷载作用下的竖向变形，计入水平摩阻力影响后理论与实测曲线吻合更好。
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| 关 键 词： | 软土路基 土工格室加筋体 变形计算 Winkler地基模型 水平摩阻力 |
| 收稿时间： | 2008-07-25 |
Deformation analysis of geocell reinforcement based on theory for beam on elastic foundation |
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| ZHAO Ming-hua,ZHANG Ling,CAO Wen-gui,MA Bin-hui.Deformation analysis of geocell reinforcement based on theory for beam on elastic foundation[J].Rock and Soil Mechanics,2009,30(12):3695-3699. |
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| Authors: | ZHAO Ming-hua ZHANG Ling CAO Wen-gui MA Bin-hui |
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| Institution: | Institute of Geotechnical Engineering, Hunan University, Changsha 410082, China |
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| Abstract: | Working mechanism of the geocell reinforcement was discussed. Based on the deformation responses under the load, the geocell reinforcement was treated as a beam on Winkler foundation while analyzing. Then the theory of beam on elastic foundation was employed to propose the deformation control differential equation, which could consider the effect of the horizontal resistance between the geocell reinforcement and the foundation soil; and a power series solution for this equation was given. And then a deformation calculating method for the geocell reinforcement under the point load was proposed, which was a beneficial result to study the settlement calculation of road embankment reinforced by geocell. Finally, to verify this method, a model test was employed. The comparative analysis result shows that the value of the vertical deformation of the geocell reinforcement will be exaggerated if the effect of the horizontal resistance is neglected; but while this effect was considered in analyzing, the theoretical curve is much closer to the measured value. |
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| Keywords: | soft ground geocell reinforcement deformation calculation Winkler foundation model horizontal resistance |
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