| 重复荷载作用下粘性路基土的永久变形预估 |
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| 引用本文： | 高启聚,郭忠印,丛林,张洪亮.重复荷载作用下粘性路基土的永久变形预估[J].同济大学学报(自然科学版),2008,36(11). |
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| 作者姓名： | 高启聚 郭忠印 丛林 张洪亮 |
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| 作者单位： | 1. 同济大学道路与交通工程教育部重点实验室,上海,200092
2. 同济大学道路与交通工程教育部重点实验室,上海,200092;长安大学公路学院,陕西,西安,710064 |
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| 基金项目： | 交通部西部交通建设科技项目
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| 摘 要： | 利用室内重复荷载三轴试验,研究了在含水量、压实度和偏应力影响下粘性路基土的永久变形特性,并以Tseng-Lytton路基土永久变形预估模型形式为基础,对Tseng-Lytton模型进行了改进和标定,建立了粘性路基土的永久变形预估模型;最后利用分层应变总和法,并结合一个典型粒料柔性基层沥青路面结构实例,计算了路基土的永久变形量.
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| 关 键 词： | 粘性路基土 重复荷载三轴试验 永久变形预估模型 粒料基层 分层应变总和法 |
Evaluation of Permanent Deformation of Clayed Subgrade Soils Under Cyclic Loading |
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| GAO Qiju,GUO Zhongyin,CONG Lin,ZHANG Hongliang.Evaluation of Permanent Deformation of Clayed Subgrade Soils Under Cyclic Loading[J].Journal of Tongji University(Natural Science),2008,36(11). |
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| Authors: | GAO Qiju GUO Zhongyin CONG Lin ZHANG Hongliang |
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| Institution: | GAO Qiju1,GUO Zhongyin1,CONG Lin1,ZHANG Hongliang1,2 |
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| Abstract: | The paper presents a study on permanent deformation characteristics of clayed subgrade soils with different moisture content,compaction degree and deviator stress level on the basis of the repeated load triaxial test.Based on Tseng-Lytton evaluation model for permanent deformation,and evaluation model for permanent deformation of clayed subgrade soils is established by improving and calibrating Tseng-Lytton model.Finally,combined with a case study of typical asphalt pavement structure with granular base,permanent deformation of clayed subgrade soils is calculated with layerwise strain summation method. |
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| Keywords: | clayed subgrade soils repeated load triaxial test evaluation model for permanent deformation granular base layerwise strain summation method |
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