箍筋对钢筋混凝土约束梁屈服后剪坏延性影响的试验研究  

THE EXPERIMENTAL INVESTIGATION ON INFLUENCING OF STIRRUPS ON DUCTILITY OF POST-YIELD SHEAR FAILURE IN REINFORCED CONCRETE RESTRAINED BEAMS

作　　者：张鑫[1] 阚永魁 陈肇元[2] 

机构地区：[1]山东建筑工程学院建工系 [2]清华大学

出　　处：《山东建筑大学学报》1992年第1期20-28,共9页Journal of Shandong Jianzhu University

摘　　要：本文对12根均布荷载作用下钢筋混凝土约束梁进行了试验,主要研究其屈服后剪坏的性能。由试验得出,影响构件屈服后剪坏的主要因素是纵筋配筋率,当纵筋配筋率一定时,构件屈服后剪坏的极限转角和延性随含箍特征值的增加而增加。本文给出了建议计算公式和在支座截面负弯矩区,箍筋间距应不大于h_(0/4)的构造措施.This paper presents the experimental study on ultimate ro- tation and ductility of post-yield shear failure beams.12 reinforced concrete restrained beams under uniform loading were tested. The conclusions obtained include. 1 The tensile reinforcement ratio is the main factor that influences on ductility behavior of post-yield shear failure; the ultimate rotation and ductility ratio increase with the stirrups for given tensile reinforcement ratio. 2 The spacing of stirrups should be less than d/4(d-effective depth of beams ) near the supports. Based on the experimental and collected data, design formulas are pro- posed.

关 键 词：屈服后剪坏 极限转角 延性 约束梁 

分 类 号：TU-55[建筑科学]