南京某小学砖混结构加固改造问题研究  

Research on the Reinforcement and Reconstruction of Brick-concrete Structures in a Primary School in Nanjing

作　　者：李靖昌 沈伟 章传胜 LI Jingchang;SHEN Wei;ZHANG Chuansheng(Nanjing Yangtze Urban Architectural Design Co.,Ltd,Nanjing Jiangsu 210002 China)

机构地区：[1]南京长江都市建筑设计股份有限公司,江苏南京210002

出　　处：《江苏建筑》2024年第2期39-43,共5页Jiangsu Construction

摘　　要：根据城市更新政策要求,南京某小学砖混结构需要进行加固改造。结合改扩建要求,本工程通过设结构缝,对部分结构单体进行了划分,同时对单跨框架采取性能化设计方法。考虑建筑使用功能、工期和造价等因素,本工程墙体采用高延性混凝土加固方案,局部增设高延性混凝土组合构造柱,该方案对原结构预制板和基础的影响也较小。花篮梁采取外粘钢板加固方案及增大截面加固方案,预制空心楼板设置钢筋混凝土叠合层增强整体性,屋面板采用粘贴碳纤维布方式进行加固。由此,通过采取合理的加固方案保证加固改造后的结构具有良好的抗震性能。According to the requirements of the construction unit,the project of a primary school in Nanjing needs to be reinforced and renovated.In line with the requirements for reconstruction and expansion,the project has segmented parts of the structural entity by establishing structural joints,while also adopting a performance-based design approach for the single-span frame.Considering the factors such as the use function,construction period and cost of the building,the walls of the project adopts the high ductility concrete reinforcement scheme,and locally adds the high ductility concrete composite structural column,which also has a small impact on the original structure precast slab and foundation.The ledger beam adopts an external steel plate reinforcement scheme and an increased cross-section reinforcement scheme.The prefabricated hollow floor slab is equipped with a reinforced concrete composite layer to enhance the integrity,and the roof panel is reinforced by pasting carbon fiber cloth.Therefore,a reasonable reinforcement scheme is adopted to ensure that the structure after reinforcement and reconstruction has good seismic performance.

关 键 词：砖混结构 单跨框架 高延性混凝土 花篮梁 预制板 

分 类 号：TU398.5[建筑科学—结构工程]