节点形式对新型半刚性钢梁节点受弯性能影响研究  

STUDY ON THE INFLUENCE OF NODE FORM ON THE BENDING PERFORMANCE OF NEW SEMI-RIGID STEEL BEAM NODES

作　　者：刘仲略 LIU Zhong-lue(China Railway 18th Bureau Group No.5 Engineering Co.,Ltd.,300450,Tianjin,China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300450

出　　处：《建筑技术》2025年第7期789-793,共5页Architecture Technology

摘　　要：基于上海榕融氧化铝连续纤维制品工业化生产与制备产业园项目,本研究改进提出了一种新型半刚性钢梁节点,并给出了建议的理论计算方法。进一步建立了误差在10%以内的可靠模型,并深入研究了该新型节点在抗弯性能方面的表现。结果表明:其形变幅度符合极限状态下柱宽形变不超过3%的规范要求,采用五边形加固形式的试件极限弯矩较三角形和四边形加固分别提升6.18%和6.40%,且H形钢梁形成了塑性铰。在五边形加固基础上进一步改类双腹板设计,并不会对半刚性节点设计造成明显影响,还可显著提升节点35%的屈服承载力及27%的极限弯矩,充分证明了设计的合理性与结构的可靠性。本研究为该类新型节点应用提供了重要的理论支撑。Based on the industrial production and preparation of Shanghai Rongrong alumina continuous fiber products industrial park project,this study improved and proposed a type of semirigid steel beam node,and gave the recommended theoretical calculation method.Further,a reliable model with an error of less than 10%established,and the performance of the new node in terms of flexural resistance was investigated in depth.The results show that its deformation magnitude meets the specification requirements that the width deformation should not exceed 3%under the limit state,and the ultimate bending moment of the test piece with pentagonal reinforcement form is increased by 6.18%and 6.40%compared with that of triangular and quadrilateral reinforcement,respectively,and the H-shaped steel beam forms a plastic.Further modification of the double web plate design on the basis of pentagonal reinforcement will not have a significant impact on the design of semi-rigid nodes,and can improve the yield bearing capacity and ultimate bending moment of the node by 35%and 27%,respectively,which fully proves the rationality of design and the reliability of the structure.This study provides an important theoretical support for the application of this new type of node.

关 键 词：半刚性节点 钢梁节点 力学性能 数值模拟 

分 类 号：TU398.9[建筑科学—结构工程]