梁与墙垂直相交时梁纵筋的锚固设计研究

Research of anchorage design for longitudinal reinforcement in beam at perpendicular intersections between beams and walls

采用有限元软件ABAQUS对梁与墙垂直相交节点进行了有限元模拟分析,在相同加载条件下,通过改变各模型梁纵筋的直径大小、配筋方式、墙内设置暗梁、墙内设置边框梁、墙后设置梁头、梁端增设梁垫、考虑楼板作用等各种参数,对不同构造做法中其节点的承载能力、锚固区钢筋的受力状态、屈服机制、节点区的损伤破坏模式等进行了分析研究。

Perpendicular intersections between beams and walls were analyzed by the finite element software ABAQUS in this paper.Under the same load,different methods including changing the diameter or layout of longitudinal bars,installing hidden beams in walls,designing beam heads,adding beam pads at the end of beams and considering the effect of slabs were investigated. The node strength,the stress distribution of bars in anchorage zone,the yielding mechanism of bars and the damage patterns of nodes using every method listed above were examined and compared.