摘要
采用混凝土双轴应力状态下破坏的修正Mohr-Cou lomb准则,建立预应力板柱节点冲切破坏的脱离体模型,考虑预压应力和预应力钢筋曲线对板柱节点抗冲切的有利影响,推导了预应力板柱节点的抗冲切计算公式。与试验数据对比,本文提出的计算公式具有较高的精度。
Based on modified Mohr-Coulomb failure criteria of concrete material under biaxial stress, a rigid-plastic failure cone model of disengagement is presented to yield an analytical solution of the strength of punch shear in prestressed beam-column connection using principle of virtual work. The effective contribution of pre-compression of concrete and vertical component of prestress in curvous prestressed bar is addressed. The prediction of analytical solution was verified extensively against available experiment data and approached the result very well.
出处
《四川建筑科学研究》
北大核心
2006年第5期11-14,共4页
Sichuan Building Science
基金
教育部留学回国基金资助
关键词
预应力混凝土
板柱节点
冲切强度
prestressed concrete
beam-column joint
strength of punching shear
