|
|
岩土力学 2012, 33(1) 60-64 DOI:
ISSN: 1000-7598 CN: 42-1199/O3 |
|
|
|
|
本期目录 |
下期目录 |
过刊浏览 |
高级检索
[打印本页]
[关闭]
|
|
| 基础理论与实验研究 |
|
|
单点击实法击实试验研究 |
|
|
朱崇辉1，王增红1，希罗科夫 B. H.2 |
|
|
1. 西北农林科技大学 水利与建筑工程学院，陕西 杨凌 712100；2. 国立莫斯科大学 地质系，俄罗斯 莫斯科 119234 |
|
|
摘要：
在国内现行的各类土工试验规程中，5点击实法是最基本的土工击实试验方法，具有用土量大、费时、费力，而且试验数据处理麻烦等缺陷。为了克服这些缺陷，采用静压脱湿试验法，对人工配制含水率，而且含水率高于该土的塑限含水率的不同土样进行脱湿。试验结果表明：各土样脱湿后的含水率具有稳定在标准击实功下该土最优含水率以下某一稳定水平的特点。由此提出：可将需要击实的土样先脱湿，得出土样脱湿后的含水率，再乘以有关系数求得土的最优含水率，直接对最优含水率下的土体进行标准击实功单点击实，从而快速准确地获得该土的最优含水率和最大干密度。通过对比试验验证，单点击实法不但简单、快速，而且具有足够的可靠性。 |
|
|
关键词：
单点击实法
击实试验
脱湿试验
最优含水率
最大干密度
|
|
|
Research on compaction test of single compaction method |
|
|
ZHU Chong-hui1，WANG Zeng-hong1，SHIROKOV V. N.2
|
|
|
1. College of Water Conservancy and Architectural Engineering, Northwest Sci-Tech University of Agriculture and Forestry，Yangling, Shaanxi 712100 China; 2. Faculty of Geology, National Moscow State University, Moscow, 119234 Russia
|
|
|
Abstract:
Currently, in China, compaction test with five-point method is the most basic earthwork test in the various specifications of soil test. The test has some drawbacks such as needing much more test soil and test time, great effort and meeting trouble in data processing. In order to overcome these shortcomings, different soil samples being prepared is dehydrated under the conditions of the timing constant pressure that its moisture content is higher than its plastic limit water content. There is a law that the moisture content after being dehydrated was stable, it is always lower than the optimum water content under standard compaction work. Based on the characteristic, optimum moisture content of the soil could be calculated by dehydrated moisture content and the correlation coefficient multiplied. Soil optimum moisture content and maximum dry density under standard compaction work could be obtained quickly and accurately using single-compaction method. After improving the method of compaction test, it is simple, fast and reliable comparing with the five-point method. |
|
|
Keywords:
single compaction method
compaction test
dehydration test
optimum moisture content
maximum dry density
|
|
|
收稿日期 2010-04-24 修回日期 网络版发布日期 |
|
|
DOI: |
|
|
基金项目:
西北农林科技大学基本科研业务专项资金项目资助(No.QN2011023) |
|
|
通讯作者: 王增红，女，1972年生，硕士，讲师，主要从事农业水利工程教学与研究工作。E-mail: wzh9403@163.com |
|
|
作者简介: 朱崇辉，男，1971年生，博士，讲师，主要从事岩土工程教学与研究工作。 |
|
作者Email: zcha008@tom.com |
|
|
| 参考文献： |
|
| 本刊中的类似文章 |
| 1．王 沛，柴寿喜，王晓燕，魏 丽，李 敏.麦秸秆加筋盐渍土重型击实效果的影响因素分析[J]. 岩土力学, 2011,32(2): 448-452 |
| 2．朱俊高，翁厚洋，吴晓铭，刘汉龙.粗粒料级配缩尺后压实密度试验研究[J]. 岩土力学, 2010,31(8): 2394-2398 |
| 3．聂庆科，王英辉，梁书奇，张全秀 .广西靖西红黏土及其击实后的水稳定性试验研究[J]. 岩土力学, 2010,31(4): 1134-1138 |
| 4．冯瑞玲，陶建利，赵占厂，沈宇鹏.含粗粒的细粒土的压实特性研究[J]. 岩土力学, 2010,31(2): 382-386 |
|
