基于有限元方法的某高层建筑开孔RC梁分析及其加固设计

Analysis and strengthening design of perforated RC beams in a high-rise building based on finite element method

就上海某高层建筑项目顶部4层框架梁开孔加固问题采用有限元方法进行分析和设计,通过ANSYS软件非线性数值模拟分析钢筋混凝土梁上密集开孔对承载力的影响,通过SAP2000软件对外包型钢加固做法进行分析计算,经加固后结构基本达到完整梁的效果。最后提出本工程采用外包型钢加固法的技术要点。本工程加固方案分析及加固设计可为同类工程提供借鉴。

The finite element method was used to analyze and design the hole reinforcement problem of the top 4-story frame beam of a high-rise building project in Shanghai,and the influence of dense openings on the reinforced concrete beam on the bearing capacity was analyzed through the nonlinear numerical simulation of ANSYS software.The reinforcement method of strengthening with externally wrapped shaped steel was analyzed and calculated by SAP2000,and the structure basically achieves the effect of a complete beam after reinforcement.Finally,the technical key points of this project using the outer profile steel reinforcement method were put forward.The analysis and reinforcement design of the reinforcement scheme of this project can provide reference for similar projects.