摘要
对１６根矩形截面配筋钢纤维高强混凝土纯扭构件进行了试验研究。基于复合材料力学的混合法则，提出了配筋钢纤维高强混凝土纯扭构件抗裂扭矩和极限扭矩的计算公式。应用空间软化桁架模型对配筋钢纤维高强混凝土纯扭构件进行了荷载—变形全过程分析，并提出了简化的“二阶段”分析方法。比较表明，文中提出的理论计算方法与试验结果符合较好。
Experimental results of 16 reinforced steel fiber high strength concrete members with rectangular cross section under pure torsion are reported.Based on the law of mixtures,the calculation formula of cracking torque and ultimate torque are proposed.The softening space truss model is applied to predict the complete load deformation curves,and the simplified “two stage” analytical method is proposed.Comparisons show that the calculating results based on above methods are in good accordance with the test ones.
出处
《南京建筑工程学院学报》
1998年第2期16-24,共9页
Journal of Nanjing Architectural and Civil Engineering Institute(Natural Science)
基金
江苏省教委青年教师基金
关键词
配筋
钢纤维
高强混凝土
纯扭
混凝土构件
reinforcement
steel fiber
high strength concrete
pure torsion
space truss model
softening
