钢纤维活性粉末混凝土与钢筋粘结性能研究  

STUDY ON BOND PROPERTIES BETWEEN REINFORCEMENT AND STEEL FIBER REINFORCED REACTIVE POWDER CONCRETE

作　　者：贾方方[1,2,3] 贺奎[2] 安明喆[3] 王二坡[2] 路振宝[2] 

机构地区：[1]北京建工集团有限责任公司博士后科研工作站,北京100055 [2]北京市功能性高分子建筑材料工程技术研究中心,北京市建筑工程研究院有限责任公司,北京100039 [3]北京交通大学土木建筑工程学院,北京100044

出　　处：《建筑技术》2014年第12期1094-1096,共3页Architecture Technology

基　　金：国家自然科学基金资助项目(51278039);北京市博士后工作经费资助项目(2014ZZ-41)

摘　　要：通过中心拔出试验对钢纤维掺量为0％～2％的活性粉末混凝土与变形钢筋间的粘结性能进行研究,结果表明钢纤维掺入后能提高活性粉末混凝土的抗拉强度,改变粘结破坏形式,得到粘结应力-滑移曲线的下降段;钢纤维活性粉末混凝土与钢筋间的拔出粘结应力-滑移曲线可分为微滑移段、滑移段、非线性段及下降段四个阶段,劈裂粘结强度及极限粘结强度随钢纤维掺量的增加约呈线性增长.Bond properties between reinforcement and reactive powder concrete with and without steel fibers were studied. The results show that, the tension strength of reactive powder concrete increased with the incorporation of steel fiber, therefore, the failure mode of bond specimens changed, and also the descending segment of bond stress-slip curve brought out. Bond stress-slip curve of steel fiber reinforced reactive powder concrete can be divided into four segments： slightly slippage segment, slippage segment, nonlinearity segment and descending segment. Splitting bond strength and ultimate bond strength increased lineally with the increasing of steel fiber.

关 键 词：活性粉末混凝土 钢纤维 粘结应力-滑移 锚固特征值 

分 类 号：TU377[建筑科学—结构工程]