| 风积沙的工程力学性质试验研究 |
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| 引用本文： | 李烘星.风积沙的工程力学性质试验研究[J].广东交通职业技术学院学报,2007,6(3):8-10. |
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| 作者姓名： | 李烘星 |
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| 作者单位： | 广州市公路工程公司,广东广州,510075 |
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| 摘 要： | 结合毛乌素沙漠沙样,对风积沙的工程力学性质进行了系统的试验研究。试验结果表明:风积沙的压实可采用常规的击实试验方法和振动密实法,压实效果受颗粒级配、含水量、荷载大小、振动频率及振幅等多种因素影响;风积沙的内摩擦角与压实度之间呈线性变化规律,颗粒级配是主要影响因素,含水量影响较小;风积沙的室内回弹模量和加州承载比与压实度之间大致呈非线性增大规律,在某一压实度区间增大的幅度非常小。
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| 关 键 词： | 风积沙 最大干密度 压缩模量 内摩擦角 回弹模量 加州承载比 |
| 文章编号： | 1671-8496-（2007）03-0008-03 |
| 修稿时间： | 2006-05-28 |
Experimental Research on Engineering Mechanics Property of Wind-blown Sand |
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| LI Hong-xing.Experimental Research on Engineering Mechanics Property of Wind-blown Sand[J].Journal of Guangdong Communication Polytechnic,2007,6(3):8-10. |
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| Authors: | LI Hong-xing |
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| Institution: | Highway Engineering Company of Guangzhou City, Guangzhou 510075,China |
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| Abstract: | Combining with the sand samples colleted from Maowusu desert,the authors have made systemic experi- ments to study the engineering mechanics properties of wind-blown sand.The results of tests show that wind-blown sand can be compacted by normal compaction test and vibration test,and the influencing factors of compaction effectiveness include rate of grade,water content,load pressure,vibration frequency,amplitude of vibration,and so on.The statistical laws between internal friction angle and compactness are linear relations,water-content influence is little,and the size grading is the main influencing factor.The indoor modulus of resilience and CBR of wind-blown sand increase nonlinearitily with compactness,the growth range in certain compactness interval is little. |
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| Keywords: | wind-blown sand maximum dry density compression modulus internal friction angle modulus of resilience CBR |
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