论文部分内容阅读
变角桁架模型最早由 Wagner 在1929年研究薄腹钢梁曲屈后的剪切问题时提出.Collins 发展了该理论(称为斜压场理论),用以研究承受复杂荷载的钢筋砼截面.本文的理论模型建立在变角桁架模型基础上,能解决配有倾斜箍筋梁受剪承载力问题.由于考虑了腹筋屈服后的强化效应,在适筋范围内,给出的受剪承载力高于由 Nielsen 和Braestrup 提出的刚塑性模型,而在超筋范围内,给出的受剪承载力低于刚塑性模型.作者
The variable angle truss model was first proposed by Wagner in 1929 when studying the post-buckling problems of thin-web steel beams. Collins developed this theory (called oblique field theory) to study the reinforced concrete sections subjected to complex loads. The theoretical model of this paper is based on the variable-angle truss model and can solve the problem of shear bearing capacity of steel beams with inclined stirrups. Due to the reinforcement effect of web reinforcement after yielding, the shear capacity is given within the appropriate reinforcement range. It is higher than the rigid plastic model proposed by Nielsen and Braestrup, but in the range of super-reinforcement, the given shear capacity is lower than the rigid plasticity model.