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既有框架结构局部加层改造抗震性能分析

Analysis of Seismic Performance of Existing Frame Structure with Local Additions

Advance in Civil Engineering / 2021,3(3): 41-49 / 2021-07-27 721 595

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• Authors: 叶阳¹      刘洋¹      占慧鸣²     
• Information:

  1．武汉中合众建筑科学工程有限公司，武汉；
  2．武汉怡恒工程技术有限公司，武汉

• Keywords: Frame Construction; Structure Transformation; The Seismic Identification; Performance Calculation 框架结构；结构改造；局部加层；抗震分析
• Abstract: Taking the reconstruction of four-storey frame structure building (first floor overhead) in the 7th degree area as an example, the seismic performance of buildings before and after partial addition of reinforced concrete floor in the overhead layer was analyzed by using the design and calculation software of Yingjianke. The main seismic performance of the building structure before and after the reconstruction were compared, such as the natural vibration period, lateral displacement, shear to span ratio of column, shear force change of column top and bottom and vertical irregularity of the structure. The calculation and analysis show that the seismic performance of the whole structure does not change much after the reconstruction, but the seismic performance of some components is weakened. The analysis results are of reference significance to the safety appraisal, renovation design and reinforcement construction of local reconstruction engineering of building structures. 以七度区四层框架结构建筑（首层架空）局部加层改造为例，采用盈建科设计计 算软件分析了架空层局部增设钢筋混凝土楼盖前后的房屋抗震性能，对比了改 造前后房屋结构的自振周期、侧向位移、柱剪跨比、柱顶柱底剪力变化以及结 构竖向不规则等主要抗震性能计算结果。计算分析表明，改造后结构整体抗震 性能变化不大，但个别构件抗震性能弱化。分析结果对建筑结构局部改造工程 的安全鉴定改造设计、加固施工具有参考意义。
• DOI: https://doi.org/10.35534/ace.0303011
• Cite: 叶阳，刘洋，占慧鸣．既有框架结构局部加层改造抗震性能分析［J］．土木工程进展，2021，3（3）：41-49．