| 松原液化砂共振柱试验研究 |
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| 引用本文： | 董策,郑志华,赵嘉兴.松原液化砂共振柱试验研究[J].科学技术与工程,2022,22(3):1131-1136. |
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| 作者姓名： | 董策 郑志华 赵嘉兴 |
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| 作者单位： | 防灾科技学院;北方工业大学 土木工程学院 |
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| 基金项目： | 中央高校基本基本科研研究生创新项目，国家重点基础研究发展计划（973计划） |
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| 摘 要： | 为了探讨松原液化砂的动力特性,对9种工况下的三种液化砂进行共振柱试验,研究了三种砂在不同密度及固结压力条件下动剪切模量、阻尼比和剪应变的变化关系,通过标准差和变异系数柱状图分析了动剪切模量比和阻尼比的离散程度。结果表明：松原地区三种液化砂的动剪切模量比与阻尼比数值变化差异不大,且经统计分析得到的阻尼比离散程度比动剪切模量比高,误差大。
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| 关 键 词： | 共振柱试验 动剪切模量 阻尼比 剪应变 |
| 收稿时间： | 2021/4/26 0:00:00 |
| 修稿时间： | 2022/1/6 0:00:00 |
Experimental Study on Resonance Column of Songyuan Liquefied Sand |
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| Dong Ce,Zheng Zhihu,Zhao Jiaxing.Experimental Study on Resonance Column of Songyuan Liquefied Sand[J].Science Technology and Engineering,2022,22(3):1131-1136. |
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| Authors: | Dong Ce Zheng Zhihu Zhao Jiaxing |
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| Institution: | Institute of Disaster Prevention; School of Civil Engineering,North China University of Technology |
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| Abstract: | In order to research the dynamic characteristics of liquefied sand in Songyuan, the resonance column tests were carried out on three kinds of liquefied sand under nine conditions. The relationship among dynamic shear modulus, damping ratio and shear strain of three kinds of sand under different densities and consolidation pressures was studied. The dispersion degrees of dynamic shear modulus ratio and damping ratio were analyzed by histogram of standard deviation and coefficient of variation. The results showed that there was little difference between the dynamic shear modulus and damping ratio of liquefaction sand at different locations in Songyuan area, and the discrete degree of damping ratio was higher than that of dynamic shear. |
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| Keywords: | Resonant column test Dynamic shear modulus Damping ratio Shear strain |
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