三级配混凝土静动态弯拉强度尺寸效应试验研究  

Size effect on static and dynamic flexural strength of three-graded concrete

作　　者：张建 金龙[2] 丁宁[2] 

机构地区：[1]江苏铭城建筑设计院有限公司,江苏盐城224005 [2]河海大学土木与交通学院,江苏南京210098

出　　处：《山西建筑》2013年第25期100-102,共3页Shanxi Architecture

基　　金：国家自然科学基金面上项目(项目编号:51178162)

摘　　要：对三级配混凝土静动态弯拉强度的尺寸效应进行了试验研究,介绍了采用液压伺服加载系统和简支梁三分点加荷法的试验过程,试验结果表明:三级配混凝土动态弯拉强度均比静态强度高,具有明显的强度尺寸效应,且大尺寸三级配混凝土均比小尺寸三级配混凝土的弯拉强度提高率低。This paper presents the results of an experimental investigation into size effect on static and dynamic flexural strength of three-graded concrete.Hydraulic servo loading system and simply supported beam trisection point loading method are executed in the experiment,test results indicates that dynamic flexural strength of three-graded concrete is higher than static strength.An obvious size effect is observed in the flexural strength of three-graded concrete.The static flexural strength,dynamic flexural strength and dynamic increase factor of big ones are lower than those of small ones.

关 键 词：动态弯拉 尺寸效应 多重分形尺度律 

分 类 号：TU528[建筑科学—建筑技术科学]