摘要
高层建筑中柱混凝土强度高于梁是普遍存在的,施工中节点区混凝土若按柱子混凝土来浇筑,在支模、施工缝、施工质量等施工技术方面都存在一定的困难,按梁混凝土浇筑节点区(夹心节点)被认为是解决这类问题的有效途径,为此需对夹心节点采取一些特殊措施予以改进,以满足承载能力和变形需求。该文通过一个传统和三个在节点核心区加插短钢筋的夹心节点的足尺试件的低周交变加载试验,表明加插短钢筋是一种行之有效的加强措施。
It is popular that the strength of the concrete in the column is higher than that in the beam in the reinforced concrete high-rise frame structures.In construction,if the column-beam joints are poured with the same strength concrete as columns,there are some difficulties in solving such as formwork planning,construction joint,quality of construction and construction technology.It is useful and effective that the column-beam joints are poured with the same strength concrete as beams.The column-beam joints poured with the same strength concrete as beams need improvement by special measures in order to meet load-carrying ability and deflection.One traditional joint and the other three specimens representing lower strength concrete with short bars measures in the column-beam joints interior joints were tested under cyclic load,which showed the short bars in joint region is an effective strengthening measure.
出处
《重庆建筑》
2013年第1期44-46,共3页
Chongqing Architecture
关键词
夹心节点
短钢筋
失效模式
beam-column joints
short bars
failure mode
