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| 压实膨胀土纵波速度与强度的关系研究 | |
| 引用本文： | 黄震,韦秉旭. 压实膨胀土纵波速度与强度的关系研究[J]. 中南公路工程, 2014, 0(2): 123-126 |
| 作者姓名： | 黄震 韦秉旭 |
| 作者单位： | 长沙理工大学 交通运输工程学院,湖南 长沙410004 |
| 摘 要： | 利用超声波技术测试压实膨胀土在等幅度干湿循环条件下的纵波速度，探索了纵波波速变化值与直剪强度指标之间的关系。试验结果表明；随着循环次数的增加，压实膨胀土的纵波速度和黏聚力 c 值均呈衰减趋势，当循环幅度越大时，纵波速度和黏聚力c值衰减程度越大。膨胀土黏聚力c值和纵波速度具有良好的对数衰减关系，而纵波速度与内摩擦角φ值之间不存在某种函数关系。 |
| 关 键 词： | 压实膨胀土 纵波速度 直剪强度 循环幅度 |
Study on the Relationship Between the P-Wave Velocity and Strength of Compacted Expansive Soil |
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| HUANG Zhen,WEI Bingxu. Study on the Relationship Between the P-Wave Velocity and Strength of Compacted Expansive Soil[J]. Central South Highway Engineering, 2014, 0(2): 123-126 | |
| Authors: | HUANG Zhen WEI Bingxu |
| Affiliation: | ( College of transportation engineering, Changsha university of science and technology, Changsha, Hunan 410004, China) |
| Abstract: | Ultrasonic technology was used to test p-wave velocity of the compacted expansive soil under the condition of constant amplitude wetting and drying cycle,the relationship of the p-wave velocity change value and the direct shear strength index was explored.The experimental results showed that;With the increase of cycling times,the p-wave velocity and cohesion of c values of compacted expansive soil are the attenuation trend,when the cycle amplitude greater,the attenuation degree of the p-wave velocity and cohesion of the c value is greater.The cohesion c value and longitudinal wave velocity of expansive soil has a good logarithmic decrement relation,the p-wave velocity and angle of internal friction values does not exist a certain functional relation. |
| Keywords: | compacted expansive soil p-wave velocity direct shear strength cycle amplitude |
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