摘要
现浇楼盖板对RC框架结构的破坏机制有着重要的影响,它对梁端抗弯承载力有一定的增强作用。文章综合考虑节点类型、边界条件、侧向变形量、直交梁刚度、加载机制、板的厚度、板的配筋量以及板筋的布置等因素来确定梁端有效翼缘,提出考虑板筋承载力的梁端抗弯承载力计算公式。通过实例对比,提出的改进公式可以实现钢筋混凝土框架结构的"强柱弱梁"破坏机制。
Cast-in-place floor has a significant impact on the failure mechanism of reninforced concrete frame structures, it has a certain enhancement effect on the flexural capacity of beam.This paper consider the factors of node type, boundary conditions, the thickness of the lateral deformation capacity, orthogonal beam stiffness, loading mechanism, thickness of the plate and the amount of reinforcing steel plates arranged ligament to determine the effective flange to the end of beam. By the examples of proof, the results show us that the proposed improved formula can make the failure mechanism of ＂strong column-weak beam＂ be achieved in frame structures.
出处
《江苏建筑》
2014年第6期20-25,共6页
Jiangsu Construction
关键词
现浇楼盖
RC框架结构
抗弯承载力
cast-in-place
reinforced concrete frame structures
flexural capacity
