| 土工格室和土工网改善基床动态性能模型试验 |
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| 引用本文： | 曹新文,蔡英,苏谦.土工格室和土工网改善基床动态性能模型试验[J].西南交通大学学报,2001,36(4):350-354. |
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| 作者姓名： | 曹新文 蔡英 苏谦 |
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| 作者单位： | 西南交通大学土木工程学院 |
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| 摘 要： | 介绍了分别使用土工网和土工格室加固基床的5组动态1：1模型试验。为了反映列车荷载对基床的长期作用，每组试验均进行了100万次的重复加载试验。测试了动应力、弹性变形、永久变形等反映基床动态特性的参量，研究 了动应力、弹性变形和永久变形随动荷载而变化的规律，并建立了相关关系。分析比较了土工网和土工格室改善基床动态性能的效果，并对效果的差异进行了分析和总结。
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| 关 键 词： | 铁路路基 动态性能 模型试验 基床 土工网 土工格室 动应力 弹性变形 |
| 文章编号： | 0258-2724(2001)04-0350-05 |
Model Test Study of Dynamic Performances of the Subgrade Reinforced with Geocell
and Geonet |
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| CAO Xin-wen,CAI ying,SU qian.Model Test Study of Dynamic Performances of the Subgrade Reinforced with Geocell
and Geonet[J].Journal of Southwest Jiaotong University,2001,36(4):350-354. |
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| Authors: | CAO Xin-wen CAI ying SU qian |
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| Abstract: | Five groups of model tests are carried out under the simulated field conditions to examine the dynamic performances of the subgrade reinforced with geocell and geonet respectively. Cyclic loading is repeated 106 times in every group of test to simulate the action of wheel load on the subgrade. The dynamic stress, permanent deformation and elastic deformation are measured to characterize the behavior of the subgrade, and their variation trends with the dynamic loading are studied. The correlation between these subgrade performances and the dynamic load is developed. In addition, the improvements to the dynamic performances of subgrade with geocell and geonet are analyzed and compared, and the differences in their effects are also analyzed and concluded. |
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| Keywords: | railway subgrades dynamic properties model tests subgrade geocell geonet |
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