基于弹性波理论的土石混填地基压实质量评价研究

张献民; 吕耀志; 董倩; 张宇辉

doi:10.11779/CJGE201511016

基于弹性波理论的土石混填地基压实质量评价研究 English Version

1. 中国民航大学机场学院,天津 300300;
2. 天津市市政工程设计研究院,天津 300201;
3. 天津大学建筑工程学院,天津 300072

基金项目: 国家自然科学基金项目（60879021）; 中国民航局科研基金项目（MHRD07Z11）; 中央高校基本科研基金项目（ZXH2009D019）

详细信息

作者简介:
张献民(1959- ),男,博士,教授,博士生导师,主要从事岩土工程及其结构无损检测的教学与科研。E-mail: cauczxm@126.com。

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出版历程
- 收稿日期: 2014-08-19
- 发布日期: 2015-11-19

Evaluating compaction quality of soil-rock mixture based on theory of elastic waves

1. College of Airport, Civil Aviation University of China, Tianjin 300300, China;
2. Tianjin Municipal Engineering Design & Research Institute, Tianjin 300201, China;
3. School of Civil engineering Tianjin University, Tianjin 300072, China

摘要

摘要: 为了准确、高效地评价土石混填地基的压实质量,提出了一种基于弹性波理论的压实质量评价新方法。通过理论与试验分析,建立了土石混合料的剪切波速模型,实现了由土石混合料宏观剪切波速推定出其中石料间细粒土的压实度,并以此来表征混合料整体压实质量。通过室内大型振动压实试验,得到在不同含石量与含水率时,混合料中细粒土所能达到的最大干密度（或压实度）,以此作为土石混合料表征压实度评价的参考标准。研究了土石混合料剪切波速与瑞雷面波波速的关系,使得利用现场瞬态面波测试所得到的频散曲线来反演计算剪切波速成为可能。最后通过对某机场跑道填筑工程土石混填地基压实质量的评价,验证了评价方法的可行性。
- 土石混合料 /
- 压实质量 /
- 剪切波速 /
- 瑞雷面波 /
- 无损检测
Abstract: A new method based on the theory of elastic waves is founded to evaluate the compaction quality of soil-rock mixture accurately and efficiently. Based on large numbers of laboratory tests and analyses, the model for shear wave velocity propagation in soil-rock mixture is established. Then the compaction of fine-grain soil between rocks can be calculated, and it can represent the compaction quality of soil-rock mixture. In the end, the maximum dry densities of the fine-grained soil in different kinds of the soil-rock mixture with different quantities of water and rock are presented according to the results of a lot of vibration compaction tests in laboratory, and the criteria for the nominal compaction quality of soil-rock mixture are constituted. The relationship between the shear wave velocity and the Rayleigh wave velocity is analyzed, and the results can give a hand to get shear wave velocity by Rayleigh wave tests. Finally, the proposed method is used to evaluate a program of airport runway soil-rock mixture foundation to verify its feasibility.
- soil-rock mixture /
- compaction quality /
- shear wave velocity /
- Rayleigh wave /
- nondestructive detection

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参考文献(21)

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