| 填方地基压实质量的波电场耦合快速检测试验研究 |
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| 引用本文： | 汪 魁,赵明阶,孙 笑.填方地基压实质量的波电场耦合快速检测试验研究[J].岩土力学,2015,36(Z2):413-418. |
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| 作者姓名： | 汪 魁 赵明阶 孙 笑 |
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| 作者单位： | 重庆交通大学 水利水运工程教育部重点实验室，重庆 400074 |
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| 基金项目： | 国家自然科学基金面上项目（No.51279219）；江西省交通厅科技项目（No.2010C0016）。 |
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| 摘 要： | 土石填方地基的压实质量直接影响着上部结构的沉降变形和稳定性，如何有效地评价土石填方地基的压实质量是土石填方施工质量控制中亟待解决的关键技术问题。基于土石填料的波动传播特性和电阻率特性，构建了波电场耦合检测路基压实质量的理论模型，基于该模型提出了适用于填方地基现场压实质量检测的波电场耦合快速测试方法。将该方法应用于土石填方地基现场，采用面波测试的方法测试土石地基的波动信号，利用瑞利波的频散效应分析测试断面的横波波速，采用直流电阻率法采集测量断面的电阻率数据。对现场地基填料的波电场参数统计分析，构建了基于波电场耦合的填方地基压实度计算模型，利用现场测试的波电场参数对填方地基的压实质量进行了综合评价。结果表明，构建的模型综合了土石填料的波电场参数，应用过程中测试方便，计算简单，便于快速检测。
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| 关 键 词： | 地基 压实质量 波电耦合 试验研究 快速检测 |
| 收稿时间： | 2014-05-19 |
Experimental study of compactness fast testing of filling embankment based on wave-electricity coupled method |
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| WANG Kui,ZHAO Ming-jie,SUN Xiao.Experimental study of compactness fast testing of filling embankment based on wave-electricity coupled method[J].Rock and Soil Mechanics,2015,36(Z2):413-418. |
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| Authors: | WANG Kui ZHAO Ming-jie SUN Xiao |
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| Institution: | Key Laboratory on Hydraulic and Waterway Engineering of Ministry of Education, Chongqing Jiaotong University，Chongqing 400074, China |
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| Abstract: | In the construction of the foundation engineering, the settlement and stability of the upper structure is directly affected by the compaction quality of the earth-rock filling embankment; so how to effectively evaluate the compaction quality of earth-rock filling embankment is the key technical problem to be solved in the process of the construction quality control. A theoretical model of the compaction quality detection by wave-electricity coupled method is constructed based on the wave propagation characteristic and electrical resistivity characteristic of the soil and stone; and then the fast detection method of the compaction quality of embankment is put forward based on the theoretical model. By the engineering application, fluctuating signals in the filling embankment is collected by the surface wave method; and the wave velocity is analyzed based on the frequency dispersion of the surface wave. The electrical resistivity is tested by the direct current survey. The relationship between the wave velocity and compaction degree and the relationship between the electrical resistivity and the water content are established by analyzing of the wave and electricity characteristics of the compaction specimen. And the evaluation model of the filling embankment compactness is set up based on wave-electricity coupled method. At last, the compaction quality of embankment is evaluated comprehensively. The results show that the model considering the wave and electricity characteristic of the soil and stone, and the parameters of the wave and electricity characteristic is easy to test, and the model is simple in calculation, and this wave-electricity coupled method is convenient for rapid detection |
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| Keywords: | embankment compactness quality wave-electricity coupled method experimental study fast testing |
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