高强钢筋活性粉末混凝土简支梁受剪性能试验研究  

Experimental Study on Shear Behavior of High Strength Reinforced Reactive Powder Concrete Beam

作　　者：金凌志[1] 祁凯能[1] 曹霞[1] 

机构地区：[1]桂林理工大学广西岩土力学与工程重点实验室,桂林541004

出　　处：《武汉理工大学学报》2013年第8期108-113,共6页Journal of Wuhan University of Technology

基　　金：广西岩土力学与工程重点实验室项目(11-cx-04);广西省科技攻关项目(桂科攻0995004)

摘　　要：利用稳定可靠的试验系统,通过改变试验梁的剪跨比、配箍率、纵筋率和钢筋等级等因素,对6根不同高强钢筋活性粉末混凝土简支梁进行试验。根据试验结果,分析了不同因素对试验梁其破坏形态、剪切延性和受剪承载力的影响。结果表明:HRB500级等高强钢筋与活性粉末混凝土具有良好的协同抗剪工作性能,较好的抗剪承载力和剪切延性;对于剪跨比(1<λ≤3)一定的梁,适当配置箍筋可以提高承载能力,改善受剪延性;配箍率、纵筋配筋率和剪跨比等参数对试验梁的抗剪承载力和剪切延性影响显著。Using a test system is stable and reliable, change the test beam shear span ratio, stirrup ratio and longitudi- nal reinforcement ratio and the factors such as the steel grade, for 6 different high strength reinforced reactive powder concrete simply supported beam experiment. Results show that the HRB500 level such as high strength steel with active powder concrete has good shearing performance, good shear bearing capacity and the shear ductility. For the shear span ratio （1〈λ≤3） certain of beam, the appropriate configuration stirrups can improve the bearing capacity, improve the shear ductility. Reinforcement ratio, ratio and shear span ratio of longitudinal reinforcement and depth of the test parame- ters, such as the shear bearing capacity and the shear ductility of the beam influence significantly, stirrup ratio is higher, the higher bearing capacity, the better shear ductility; The higher the ratio of longitudinal reinforcement and depth, the higher bearing capacity, but the lower the shear ductility. The higher the shear span ratio, shear ductility, the better, but the lower bearing capacity.

关 键 词：高强钢筋 活性粉末混凝土 简支梁 受剪承载力 剪切延性 

分 类 号：TU375.1[建筑科学—结构工程] TU371.1