装配式矩形螺旋箍筋RC梁抗剪承载力试验研究  

Experimental Study on Shear Behavior of Assembly Rectangular Spiral Stirrups RC Beam

作　　者：龙帮云[1,2,3] 谷文汉 郑周[4] 刘志强[3] 张恒[3] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,徐州221008 [2]江苏建筑节能与建造技术协同创新中心,徐州221116 [3]中国矿业大学江苏省土木工程环境灾变与结构可靠性重点实验室,徐州221008 [4]淮安市城市建设设计研究院有限公司,223001

出　　处：《混凝土与水泥制品》2017年第4期48-50,共3页China Concrete and Cement Products

基　　金：中央高校基本科研业务费专项资金资助项目(2015XKMS011)

摘　　要：为研究装配式矩形螺旋箍筋RC梁的抗剪性能,设计并制作了3根配置矩形螺旋箍筋RC梁和3根配置普通分离式箍筋RC梁,研究了剪跨比、配箍率等因素对构件的抗剪承载力、整体性的影响。结果表明,与配置普通分离式箍筋RC梁相比,当剪跨比为1.51、2.03时,装配式矩形螺旋箍筋对RC梁的斜截面承载力有所提高;当剪跨比为2.5时,斜截面承载力略有降低;装配式矩形螺旋箍筋对RC梁的挠度无明显影响,但可以增强混凝土梁的整体性;配置矩形螺旋箍筋RC梁可以节约18%的箍筋用量。To study the shear strength of assembly rectangular spiral stirrup concrete beams, three RC beams with rectangular spiral stirrups and three RC beams with common stirrups were designed and fabricated, the effects of shear span ratio and stirrup ratio on the shear strength and integrity of the composite were studied. The results show that compared with common RC beams, when the shear span ratio is 1.51, 2.03, the oblique section bearing capacity of assembly rectangular spiral stirrup concrete beams improves. When the shear span ratio is 2.5, the oblique section bearing capacity decreases. Assembly rectangular spiral stirrup has no obvious effect on the deflection of RC beam, but it enhances the integrity of concrete beam. The use of a rectangular spiral stirrup can save about 18% of the stirrup.

关 键 词：装配式 矩形螺旋箍筋 抗剪性能 位移 

分 类 号：TU528.7[建筑科学—建筑技术科学]