摘要
随着我国城市更新往纵深推进,间接促进了加固技术研究广泛而深入地开展。由于历史条件的限制,许多老旧建筑在建造时的抗震构造措施不符合现行标准。如钢筋混凝土结构中箍筋含量不足的问题,该问题往往导致较大的加固工程量进而影响房屋的改造提升。本研究利用有限元分析软件SAUSAGE,对某6度设防区内的不同箍筋间距模型进行了抗震性能评估、混凝土损伤分析、等效阻尼比以及大震下的弹塑性行为等多个方面研究。结果表明,在6度设防区内,箍筋间距的小变化对结构整体抗震安全性影响有限,甚至可忽略不计。上述分析结果为在改造加固工程中遇到抗震构造问题时,提供科学合理的技术路径和理论支持,可作为后续类似实际工程的参考。
With the deepening of urban renewal in our country,it indirectly promotes the extensive and in-depth research on reinforcement technology.Due to historical limitations,many old buildings were constructed with seismic resistant measures that did not comply with current standards.The problem of insufficient hoop reinforcement content in reinforced concrete structures often directly leads to a large amount of reinforcement work and affects the renovation and improvement of buildings.This study used the finite element analysis software SAUSAGE to evaluate the seismic performance,concrete damage analysis,equivalent damping ratio,and elastic-plastic behavior under large earthquakes of different hoop spacing models in a 6-degree fortification zone.The results indicate that within the 6-degree fortification zone,small changes in the spacing between stirrups have limited or even negligible impact on the overall seismic safety of the structure.The above analysis results provide a scientific and reasonable technical path and theoretical support for seismic structural problems encountered in renovation and reinforcement projects,which can serve as a reference for similar practical projects in the future.
出处
《福建建设科技》
2025年第4期24-27,84,共5页
Fujian Construction Science & Technology
基金
BIM技术在既有建筑检测鉴定及加固中的应用研究(KY20190009)。
关键词
抗震性能
抗震构造措施
箍筋含量
大震弹塑性
混凝土损伤
seismic peformance
seismic structural measures
content of hoop reinforcement
large earthquake elastic-plastic behavior
concrete damage
