(1 中冶建筑研究总院有限公司， 北京 100088； 

2 东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096)

［摘要］在屈曲约束支撑(Buckling-Restrained Brace, BRB)钢框架中，节点连接失效是影响其性能发挥的关键。结合BRB钢框架节点连接的失效原因以及混凝土框架自身特点，根据国内外最新研究成果，从三个方面对BRB混凝土框架中的节点板连接设计展开讨论并提出建议。首先节点板与梁柱交界面的荷载作用可分为BRB作用和框架作用，经研究分析推荐采用泛应力法计算BRB作用，采用等效支撑模型计算框架作用；其次采用Thornton方法、修正Thornton方法、Sheng等人和AISC规范建议设计公式来对比节点板受压承载力的计算，结果表明如何确定等效边界条件是研究重点；最后在现有规范条文的基础上，介绍了夹板式双面锚固节点、腹板开孔H型钢预埋件节点、预埋钢骨节点、预紧螺栓节点等研究成果和适用条件，研究表明在往复荷载下预埋件的拉剪复合受力性能是保证节点连接安全的关键。

［关键词］屈曲约束支撑； 混凝土框架； 节点板； 泛应力法； 等效支撑模型； 预埋件

中图分类号：TU318-1文献标识码：A文章编号：1002-848X(2017)08-0015-08

Research review and prospect of gusset plate joint for buckling-restrained braced concrete frame

Zeng Bin1, Wang Chunlin2, Chu Yun2, Xu Qing1

(1 Central Research Institute of Building and Construction, MCC Group, Beijing 100088, China;

2 Key Laboratory of Concrete and Prestressed Concrete Structures of China Ministry of Education, Southeast University, Nanjing 210096, China)

Abstract:In steel buckling-restrained braced frames (BRB frames), the failure of the connection has a significant effect on its performance. Based on the recent domestic and abroad researches, three aspects related to gusset plate connection design of the concrete BRB frames were discussed while some suggestions were further proposed. The failure mechanisms of the connection in BRB frames and self-characteristics of concrete frames were also taken into consideration. Firstly, the load in the interface between the gusset plate and the beam-column joint can be divided into BRB action and frame action. The generalized stress method was recommended to calculate BRB action and the equivalent support model was used to calculate the frame action. Then, the Thornton method, the modified Thornton method and the design formula proposed by Sheng et al. and the suggested design formula in the AISC was used to compare calculations of the compression bearing capacity of the gusset plate. The results show that how to determine the equivalent boundary condition is the key point of research. Finally, on the basis of existing codes, the research results and application conditions of the splint-typed double-sided anchorage joints, the embedded part joint of H-shaped steel beam with holes in web, the embedded steel-bone joint and the pre-tightened bolt joint were introduced. The results show that under the cyclic load, the tensile-shear composite mechanical performance of embedded part is the key point to ensure the security of joint connection.

Keywords:buckling-restrained brace; concrete frame; gusset plate; generalized stress method; equivalent support model; embedded part

*国家自然科学基金(51578558)，中国京冶工程技术有限公司重大课题(JAF2014KJ01)。

作者简介：曾滨, 博士, 教授级高级工程师, Email: zengbin@cribc.com。