预制装配式混凝土结构新型梁连接节点设计与分析

New Connection Joints Design and Analysis in Beam of Prefabricated Concrete Structures

对于预制装配式混凝土框架结构而言,节点往往容易成为结构抗震的薄弱环节。节点的连接方式和可靠性成为影响预制装配式混凝土结构发展的重要因素。在查阅大量国内外参考文献的基础上提出了一种新型梁中连接节点。根据《混凝土结构设计规范》GB50010—2010中关于受力钢筋的连接接头宜设置在受力较小处的规定,设计了梁1/3处连接节点并将两种节点与现浇节点进行对比分析发现,梁中节点形式均可满足抗震需要,但根据运输、施工等需求,建议采用梁中连接节点。

For prefabricated concrete frame structure, connection joints are often vulnerable parts to seismic structures. Joints connection and reliability become the key of the development of prefabricated concrete structure. Based on a large number of domestic and international references, this paper proposes a new joint in the beam. According to Code for design of concrete structures GB50010--2010, connectors of stressed steel bars should be set on the place of smaller stress. So this paper designed a 1/3 connection joint and compared the two kinds of joints with cast-in-situ joint. The two new joints can meet seismic requirements. According to the demand such as transportation and construction of the joint in beam is recommended in prefabricated concrete frame structure.