摘要
塑料模型沙在航道物理模型试验中得到广泛应用,是物模试验的关键材料之一,其物理性能的准确度对物模试验的参数设置及试验结果分析尤为重要。干密度就是反映塑料模型沙重力特性的一个非常重要的物理指标,其取值准确与否直接影响物模计算结果及河床冲淤变化分析。分别对传统的测试干密度的环刀法和量筒法两种方法进行了研究,根据试验数据提出了改进措施,较大程度地提高了测试结果的准确性和稳定性。改进后的环刀法和量筒法具有一定的创新性,并得到了试验验证,可为相关行业的塑料模型沙试验提供指导和依据。
Plastic model sand has been widely used in channel physical model tests as one of the critical materials.The accuracy of its physical properties is imperative for parameter setting and result analysis.Dry bulk density,which directly affects the results of physical model calculation results and analysis of river bed scour and silt,is a vital physical index of model sand gravity features.This study analyzes the traditional cutting ring method and measuring cylinder method for dry bulk density measurement and proposes improvement measures according to test data,achieving better accuracy and stability of test results.The improved cutting ring method and measuring cylinder method are innovative and have been verified by experiments,which can provide guidance and basis for the plastic model sand test in related industries.
作者
孙爱国
唐正涛
詹盼
SUN Ai-guo;TANG Zheng-tao;ZHAN Pan(Changjiang Waterway Planning Design and Research Institute,Wuhan 430040,China)
出处
《水运工程》
北大核心
2018年第11期19-24,共6页
Port & Waterway Engineering
关键词
塑料模型沙
物理模型试验
干密度
环刀法
量筒法
plastic model sand
physical model test
dry bulk density
cutting ring method
measuring cylinder method
作者简介
孙爱国(1980—),男,硕士,高级工程师,从事岩土工程勘测及试验检测工作。
