| 加筋垫层应力扩散特性试验研究 |
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| 引用本文： | 刘毓氚,左广洲,陈福全.加筋垫层应力扩散特性试验研究[J].岩土力学,2007,28(5):903-908. |
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| 作者姓名： | 刘毓氚 左广洲 陈福全 |
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| 作者单位： | 福州大学 土木建筑学院，福州 350002 |
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| 基金项目： | 福建省教育厅科研项目;福建省自然科学基金 |
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| 摘 要： | 采用数值试验方法研究加筋垫层的应力扩散特性。首先提出一种基于附加应力反算的加筋垫层应力扩散角计算方法，然后应用该方法研究了加筋垫层应力扩散角的单因素影响规律。表明加筋垫层应力扩散角的范围为45～60°，且加筋垫层设置参数和筋材参数都存在最优值，其对应的应力扩散角最大，最后应用正交试验和多元回归分析方法研究了加筋垫层应力扩散角的多因素影响规律，分析结果表明筋材的间距对应力扩散角变化的影响最大，其次是筋材的首间距，筋材长度对应力扩散角的影响最小，所得到的加筋垫层应力扩散角综合计算公式可为工程实践提供参考。
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| 关 键 词： | 加筋垫层 应力扩散角 数值分析 |
| 文章编号： | 1000-7598-（2007）05-0903-06 |
| 收稿时间： | 2005-09-08 |
| 修稿时间： | 2005-09-08 |
Numerical research on stress distribution of geosynthetic reinforcement layer |
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| LIU Yu-chuan,ZUO Guang-zhou,CHEN Fu-quan.Numerical research on stress distribution of geosynthetic reinforcement layer[J].Rock and Soil Mechanics,2007,28(5):903-908. |
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| Authors: | LIU Yu-chuan ZUO Guang-zhou CHEN Fu-quan |
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| Institution: | College of Civil and Architecture Engineering, Fuzhou University, Fuzhou 350002, China |
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| Abstract: | The geosynthetic reinforcement layer techniques have been widely used nowadays in the foundations and embankments.During the course of the design of the geosynthetic reinforcement layer,the confirmation of the stress diffusion angle is very important,but no good methods to calculate the stress diffusion angle.This paper presents the method of calculating the stress diffusion angle of geosynthetic reinforcement layer based on additional stress back-analysis;and then using this method,researching the setup parameters of geosynthetic reinforcement layer(the thickness of geosynthetic reinforcement layer,the composite modulus of compressibility of geosynthetic reinforcement layer) and geosynthetic factors(such as reinforcing space,reinforcing width,total numbers of geosynthetic reinforcement layer etc.)on the distribution rule of the stress diffusion angle;the results indicate that the range of the stress diffusion angle is 45-60 o;further more the setup parameters of geosynthetic reinforcement layer and geosynthetic factors existing optimum values,corresponding on these values,the stress diffusion angle reaches the max.Finally,using orthogonal tests and regression methods,many effect factors on the stress diffusion angle are analyzed,the results indicate reinforcing space has a most effect on the stress diffusion angle of the geosynthetic reinforcement layer,secondly the embedded depth of the first geosynthetic,however,reinforcing width has a slight effect on the stress diffusion angle. |
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| Keywords: | geosynthetic reinforcement layer stress diffusion angle numerical analysis |
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