高强钢筋活性粉末混凝土简支梁刚度试验研究  

EXPERIMENTAL RESEARCH ON STIFFNESS OF HIGH-STRENGTH REINFORCED REACTIVE POWDER CONCRETE SIMPLE BEAM

作　　者：付强[1] 罗丽娜[1] 金凌志[1] 曹霞[1] 

机构地区：[1]桂林理工大学广西矿冶与环境科学实验中心、广西岩土力学与工程重点实验室,广西桂林541004

出　　处：《工业建筑》2014年第8期78-83,共6页Industrial Construction

基　　金：国家自然科学基金项目(51368013);广西科技攻关项目(桂科攻0995004);广西重点实验室项目(11-cx-04)

摘　　要：在8根高强钢筋活性粉末混凝土简支梁受弯试验的基础上,通过改变试验梁的纵筋率、钢筋等级等因素,分析试验梁的承载性能和变形特点。结果表明,随着配筋率和钢筋等级的提高,试验梁的承载力和整体刚度也相应提高,延缓了纵筋进入塑性阶段的时间,有效约束裂缝的发展,降低梁在加载阶段的挠度。根据高强钢筋活性粉末混凝土梁自身受力特点建立抗弯刚度计算公式,并将计算值与试验值进行对比,结果表明两者吻合良好,可供高强钢筋活性粉末混凝土梁设计参考。Based on bending test of eight high strength reinforced reactive powder concrete simple beams by changing the longitudinal rebar ratio and rebar grade of test beams , it was analyzed the load-bearing properties and deformation characteristics of the test beams.The results showed that with the reinforcement ratio and rebar grade were increased, the bearing capacity and the overall stiffness of the test beams also were increased; slowed the longitudinal reinforcement getting into the plastic stage , restrained the development of cracks effectively , reduced the beam deflection at load stage.According to the forced characteristics of high-strength reinforced reactive powder concrete beams, bending stiffness calculation formulas were set up, through which calculated values agreed well with the experimental values , which provided a reference for design of high strength reinforced reactive powder concrete beam.

关 键 词：高强钢筋 活性粉末混凝土 刚度 挠度 

分 类 号：TU375[建筑科学—结构工程]