矩形混凝土柱新的约束型式之研发(Ⅱ)外方内圆、组合螺箍及其衍生型式  

RESEARCHES AND DEVELOPMENTS OF ALTERNATIVE CONFINEMENTS FOR RECTANGULAR CONCRETE COLUMNS(Ⅱ)

作　　者：尹衍樑 

机构地区：[1]台湾润泰集团

出　　处：《土木工程学报》2004年第10期1-12,共12页China Civil Engineering Journal

摘　　要：与方箍相较 ,螺箍具有较佳的约束作用 ,然碍于形状因素一般以圆柱应用为主 ,其在矩形柱的应用有其形状上及行为上的问题待克服。本研究以组合螺箍的方式 ,探讨不同组合螺箍及其变化方式的轴压行为 ,成功地将螺箍应用于矩形柱。文中试件的约束多以螺箍为主 ,以组合多组螺箍或配合其它固定筋或衍生变化等方式 ,配置螺箍于矩形柱中 ,并透过 15组大尺寸高强度混凝土 (60cm× 60cm× 12 0cm)试件轴压试验行为 ,探讨其约束方式的可行性。试验结果显示螺箍也可在矩形柱中发挥优异的约束效果 ,大幅提升试件行为。Spiral hoops are generally believed to have better confined effects in concrete than rectangular hoops. They are always used in circular members for geometric reasons. In order to apply the spiral hoops to rectangular members, axial compression tests of 15 full-scaled specimens with difference combinations of spiral hoops were carried out in the past year. High performance concrete with 700 kg/cm2 in compression strength was also used in these specimens. Tests results showed that spiral hoops can be successfully used in rectangular concrete by suitable combinations, and the behaviors are even better than traditional rectangular specimens.

关 键 词：混凝土柱 矩形截面构件 约束混凝土 螺旋箍筋 

分 类 号：TU375.3[建筑科学—结构工程]