混凝土拉压强度比的探讨  

Research on Tension and Compression's Ratio of Concrete

作　　者：孙南屏[1] 

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510090

出　　处：《建筑科学》2014年第7期19-22,共4页Building Science

摘　　要：采用现象学方法分析混凝土拉压比的机理。结果表明,在一定的条件下,混凝土拉压比仅由泊桑比确定,混凝土拉压比间接反映了受压时功能转化变形能的分配比例关系。由进一步分析知,混凝土受拉时纵向与受压时横向产生拉应变的原因有区别,受拉时外力克服范德华引力而变形,受压时因电子云重叠产生斥力而膨胀变形。Concrete tension and compression ratio mechanism is studied in view of the phenomenological method. The result shows that concrete tension and compression ratio is determined by the Poisson＇s ratio under certain conditions only. Concrete tension and compression ratio reflects indirectly the deformed energy distribution ratio between tension and compression. By further analysis, it shows that there are different reasons in longitudinal deformation of concrete in tension and lateral deformation of concrete in compression. When concrete in tension, the tensile deformation is produced by external forces to overcome the van der Waals＇ forces; when concrete in compression, electron cloud overlap produces a repulsive force which results in the expansion deformation.

关 键 词：混凝土 拉压比 现象学 泊桑比 

分 类 号：TU528[建筑科学—建筑技术科学]