轴心受压下高强约束混凝土强度和变形的试验研究  

A Test Research into Strength and Ductility of Hlgh-Strength Confined Concrete under Uniaxial Compression

作　　者：胡海涛[1] 叶知满[2] 

机构地区：[1]青岛建筑工程学院建筑工程系 [2]清华大学

出　　处：《青岛建筑工程学院学报》1993年第1期1-8,共8页Journal of Qingdao Institute of Architecture and Engineering

摘　　要：通过26个约束混凝土试件(200×200×600mm)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、型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。Twenty-six confined concrete columns were tested under uniaxial compression and the complete stress-strain curves of concrete were obtained. The effect of overlapping hoops on the strength and ductility of high-strength concrete were studied in detail, and were compared with low-strength 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 concrete were recommenced. The theoretical equation of stress-strain curve of high-strength concrete suggested in the paper are in good agreement with the experimental curves.

关 键 词：高强混凝土 强度 轴心受压 变形 

分 类 号：TU528.31[建筑科学—建筑技术科学]