钢筋混凝土框架梁端负弯区节点加固抗震效果分析

Analysis of Seismic Effect of Reinforced Concrete Frame Beam End Negative Bending Zone Reinforcement

粘钢加固法是指在处理后的混凝土构件表面用胶粘剂粘结钢板并用植螺栓锚固的方法对结构构件进行加固,以达到构件满足现行设计规范安全性、耐久性和实用性的要求。粘钢加固框架节点的优势在于施工速度快、作业量小及对建筑环境空间影响较小等。根据结构设计工作经验,对钢筋混凝土框架节点破坏形式进行总结,通过实例对负弯区采用围板型粘钢锚固方式进行研究,论述了框架节点抗震加固方法。

The steel-bonded reinforcement method refers to the method of bonding steel plates with adhesive on the surface of the treated concrete members and anchoring the structural members with plant bolts to meet the requirements of safety,durability and practicality of the current design codes.The advantages of the steel-bonded steel frame joints are fast construction speed,small workload,and little impact on the building environment space.In this paper,based on years of structural design work experience,the author summarizes the failure modes of reinforced concrete frame joints,and studies on the use of cofferdam-type stick steel anchoring in negative bending areas through examples,and discusses the research on seismic reinforcement of frame joints.