摘要
研究目的:颗粒分析试验是对土壤粒径级配的分析试验,是土工试验的重要组成部分。本文介绍了土的颗粒组成及颗分试验的方法,重点从颗分试验的内容和操作要点出发,分析试验中可能产生误差的原因和造成的后果,在试验中找到相应的应对方法,减少或减轻误差,使试验结果更接近土的真实状态。研究结论:通过分析试验中可能产生误差的原因,得出以下减小误差产生方法的结论:(1)需针对土样情况选择正确的试验方法;(2)所用仪器设备要定期进行计量检定;(3)根据规范和设备的更新情况及时对试验操作人员进行培训,严格按规范进行操作,尽量减少误差;(4)本文研究结论对减少土工试验中的颗粒分析试验误差有一定的借鉴意义。
Research purposes： Being an important part of the soil test, the grain analysis test is a test to analyze the gradation of the soil grain size. This paper introduces the composition of soil grain and its testing methods, analyzes the causes of the testing errors and their consequences by focusing on the items and operating points during the grain analysis test. It is hoped to find proper solutions for the test to reduce or lower the errors, thus to make the test results he more similar to the true state of the soil. Research conclusions： After analyzing causes of errors in the test, attention should be paid to the following points during the test ： （ 1 ） A proper test method should be chosen aiming at the condition of soil samples ; （2） Periodic metrological verification should be done for all the instruments and apparatus; （3） Test operators should be trained for updating of specifications and equipment, and they should operate strictly according to test specifications so as to minimize errors; （4） Precautions of grain analysis test proposed in this article have certain reference significance for reducing errors in grain analysis of soil tests.
出处
《铁道工程学报》
EI
北大核心
2014年第2期38-40,95,共4页
Journal of Railway Engineering Society
关键词
土工试验
颗粒组成
颗分试验
筛析法
密度计法
soil test
composition of grain
grain analysis test
sieving test
densimeter test
