摘要
通过２６个约束混凝土试件（２００ｍｍ×２００ｍｍ×６００ｍｍ）的轴心受压试验，得到了约束混凝土应力应变全曲线。较详细地研究了复合箍筋对高强混凝土（Ｃ６０）强度和变形的影响，并与普通强度约束混凝土（Ｃ３０）进行了比较，主要考虑了箍筋直径、间距、形式和强度等影响因素。统计了高强约束混凝土峰值应力和峰值应变的计算公式。采用的应力应变曲线方程与实测曲线吻合较好。
, 26 confined concrete columns were tested under uniaxial compression and the complete stressstrain curves of concrete were obtained.The effect of overlapping hoops on the strength and ductility of highstrength concrete were studied in detail,and were compared with lowstrength confined concrete.Main factors such as spacing,diameter,yield strength and shape of hoop were considered.The formulas to estimate the strength and deformation of confined concretes were recommended.The theoretical equation of stressstrain curve of highstrength concrete suggested in the paper are in good agreement with the experimental curves.
出处
《工业建筑》
CSCD
北大核心
1997年第10期23-28,共6页
Industrial Construction
关键词
高强混凝土结构
复合箍筋
应力应变曲线
, highstrength concrete,overlapping hoops,stressstrain curve,strength,ductility
