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江   峰 ， 苏   麒

（ 中化学交建同安产城融合建设（ 安庆） 有限公司 ，安徽 安庆 246000)

摘   要 ：异型节点作为传递建筑结构内力的枢纽 ，满足受力要求是结构安全的重要保证 。为了精准还原异  型节点的力学特征 ，提出钢结构建筑异型节点极限承载特征多尺度非线性数值模拟方法 。考虑几何结构 、材料  属性等因素 ，构建钢结构建筑异型节点的非线性有限元模型 。模拟异型节点荷载施加过程 ，多尺度分析节点的  受力机理 。从抗剪和抗弯两个方面 ，计算异型节点的极限承载力 ，输出异型节点的极限承载特征数值模拟结果。 结果表明 ，与传统数值模拟方法相比 ，优化设计方法的极限承载力模拟误差降低了 1 . 88 N ,  本文方法的应用能  够有效控制异型节点的失稳概率。

关键词 ：钢结构建筑 ；异型节点 ；极限承载特征 ；多尺度模拟 ；非线性数值模拟

中图分类号 ：TU391           

       文献标志码 ：A            

文章编号 ：1005- 8249  (2024)   01- 0134- 06

DOI : 10. 19860/j . cnki . issn1005- 8249. 2024. 01 . 023

 

 

JIANG Feng ,  SU Qi

( CNCCC -Tongan City-Industry Integration Construction  ( An qing)   Co.  ，Ltd. ，Anqing 246000 ,  China)

Abstract:As the hinge to transfer the internal force of the building structure, the special-shaped joint is an important guarantee for the safety of the structure to meet the stress requirements. In order to accurately restore the mechanical characteristics of special-shaped joints, a multi-scale nonlinear numerical simulation method is proposed for the ultimate bearing characteristics of special-shaped joints in steel structures. Considering geometric structure, material properties and other factors, a nonlinear finite element model of special-shaped joints in steel structure buildings is built. The loading process of special-shaped joints is simulated, and the mechanical mechanism of joints is analyzed at multi-scale. The ultimate bearing capacity of special-shaped joints is calculated from the aspects of shear resistance and bending resistance, and the numerical simulation results of the ultimate bearing characteristics of special-shaped joints are output. The results show that compared with traditional numerical simulation methods, the simulation error of the ultimate bearing capacity of the optimized design method has been reduced by 1.88N; The application of this method can effectively reduce the probability of instability of irregular nodes.

Keywords:steel structure building; special node; ultimate bearing characteristics; multi scale simulation; nonlinear numerical simulation;

作者简介 ：江峰  ( 1985—) ,   男 ，本科 ， 高级工程师 ， 主要研究方向 ：建设工程安全管理与风险管理 ；建筑业安全文化与安 全行为 ；建设工程 、低碳建筑与绿色施工 ；弱形式求积元法的发 展与应用。

通信作者 ：苏麒  ( 1987—) ,   男 ，本科 ， 高级经济师 ， 主要研究方向： 系统工程学的发展与应用 ；企业全面风险管理 ；管理 系统的建模 、优化与仿真 ；工程项目管理。

收稿日期 ：2023- 10-25