风沙试验相似准则及其应用研究  

Similarity Criterion of Wind Sand Test and Its Application Research

作　　者：郝贠洪[1,2,3] 冯韬 刘艳晨 高峰[1,2] 胡臻 HAO Yun-hong;FENG Tao;LIU Yan-chen;GAO Feng;HU Zhen(School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;The Inner Mongolia Key Laboratory of Civil Engineering Structure and Mechanics,Inner Mongolia University of Technology,Hohhot 010051,China;The Inner Mongolia Autonomous Region Construction Inspection and Appraisal and Safety Assessment Engineering Technology Research Center,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051 [2]内蒙古工业大学内蒙古自治区土木工程结构与力学重点实验室,内蒙古呼和浩特010051 [3]内蒙古自治区建筑检测鉴定与安全评估工程技术研究中心,内蒙古呼和浩特010051

出　　处：《材料保护》2022年第7期137-143,199,共8页Materials Protection

基　　金：国家自然科学基金项目(11162011,51468049,11662012,11862022);内蒙古自治区自然科学基金面上项目(2018MS05047);开放基金项目(FKLTFM1907);内蒙古高校青年科技英才支持计划(NJYT-17-A09)资助。

摘　　要：在变形磨损理论及相似理论的基础上,对实验室模拟工况与实际工况中风沙冲蚀现象的各项影响因素的相似关系进行分析,提出风沙试验相似准则。为保证工程材料在实际风沙环境及实验室模拟风沙环境中冲蚀损伤的相互转换,该准则对实际工况中和实验室模拟工况中风沙环境各项参数的数值关系进行了限制,并通过调整实验室模拟工况中与实际工况中沙尘浓度及冲蚀速度的比例关系,控制试验速度,达到加速试验的目的。利用该准则设计实验室模拟风沙试验中各项参数的取值,通过实验室模拟风沙试验,预测工程材料在内蒙古中西部实际风沙环境下的损伤程度。风沙试验相似准则为利用模拟试验的方法评估工程材料在风沙环境下的冲蚀损伤提供了理论基础和参数选取的依据.Based on the deformation theory,wear theory and similarity theory,the similarity relations of the various factors influencing the sand erosion phenomenon between in laboratory simulation working condition and in actual working condition were analyzed,and the similarity criterion of the wind sand test was proposed.In order to ensure a mutual conversion between the erosion damages of the engineering materials in the actual wind and sand environment and that in the laboratory simulation environment,this criterion restricted the numerical relations of the various parameters of the wind and sand environment between in actual and laboratory simulation working conditions.By adjusting the proportional relations of the sand-dust concentrations as well as the erosion speeds between in laboratory simulation and actual working conditions,the test speed was controlled and accelerated.Based on this criterion,the values of various parameters in the laboratory simulation wind and sand test could be designed,and the damage degree of engineering materials in the actual wind and sand environment in central and western Inner Mongolia could be predicted through the test mentioned above.The wind and sand test similarity criterion provided a theoretical basis and a basis for parameter selection for evaluating the erosion damage of engineering materials in a wind and sand environment by means of a simulation test.

关 键 词：风沙环境 工程材料 冲蚀损伤 相似准则 

分 类 号：O303[理学—力学]