| 橡胶颗粒改良粉煤灰土的动力特性试验研究 |
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| 引用本文： | 李长雨,刘寒冰,魏海斌.橡胶颗粒改良粉煤灰土的动力特性试验研究[J].岩土力学,2011,32(7):2025-2028. |
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| 作者姓名： | 李长雨 刘寒冰 魏海斌 |
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| 作者单位： | 1. 吉林大学 交通学院，长春 130022；2. 长春工程学院 土木工程学院，长春 130012 |
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| 基金项目： | 863国家高科技研究发展计划项目，吉林大学创新基金 |
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| 摘 要： | 对橡胶颗粒改良粉煤灰土的动强度、动模量、黏聚力和内摩擦角进行了动三轴试验研究，并将试验结果与粉煤灰土的动力特性加以对比，分析表明：粉煤灰土及橡胶颗粒改良粉煤灰土在同一围压下动强度均随破坏周数的增加而减小；在同一破坏周数下动强度随着围压的增加而增加；粉煤灰土的黏聚力为203.73 kPa，内摩擦角为11°；橡胶颗粒改良粉煤灰土的黏聚力为227.26 kPa，内摩擦角为17°，橡胶颗粒改良粉煤灰土的黏聚力增大了23.53 kPa，提高了11.55%；粉煤灰土的初始切线模量及平均动模量高于橡胶颗粒改良粉煤灰土的初始切线模量及平均动模量。研究表明，橡胶颗粒改良后的粉煤灰土具有动强度高、黏聚力和内摩擦角大的特点，从而说明橡胶颗粒改良后的粉煤灰土可以作为季冻区路基冷阻层材料
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| 关 键 词： | 橡胶颗粒 粉煤灰土 冷阻层 动强度 动模量 |
| 收稿时间： | 2010-01-29 |
Experimental research on dynamic characteristics of fly ash soil improved by rubber particles |
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| LI Chang-Yu,LIU Han-bing,WEI Hai-Bin.Experimental research on dynamic characteristics of fly ash soil improved by rubber particles[J].Rock and Soil Mechanics,2011,32(7):2025-2028. |
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| Authors: | LI Chang-Yu LIU Han-bing WEI Hai-Bin |
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| Institution: | 1. College of Transportation, Jilin University, Changchun 130022, China; 2. School of Civil Engineering, Changchun Institute of Technology, Changchun 130012, China |
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| Abstract: | Dynamic triaxial tests are carried out to research the characteristics of fly ash soil improved by rubber particles such as the dynamic strength,dynamic modulus,cohesion and internal friction angle.Comparing with the normal fly ash soil,the experiment results demonstrate the conclusions as follows.Both of the dynamic strengths of the two soils are decreasing as the destruction cycles increasing under the same confining pressure.And the dynamic strengths of the two soils are increasing as the confining press... |
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| Keywords: | rubber particles fly ash soil cold resistance layer dynamic strength dynamic modulus |
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