大吨位混凝土柱加固技术研究及应用  

Research and application of reinforcement technology for large tonnage concrete column

作　　者：陈向红 梁冬 吴杰春 麦镇东 王烨璐 张八秀 曾树森 谭照权 CHEN Xianghong;LIANG Dong;WU Jiechun;MAI Zhendong;WANG Yelu;ZHANG Baxiu;ZENG Shusen;TAN Zhaoquan(Ersha Sports Training Center of Guangdong Province,Guangzhou 510105,China;Guangdong Dachen Architectural Design Co.,Ltd.,Guangzhou 510627,China;School of Civil and Traffic Engineering,Guangdong University of Technology,Guangzhou 510006,China;Dongguan Institute of Building Research Co.,Ltd.,Donguan 523809,China;Dongguan Dongcheng Subdistrict Housing and Urban-Rural Development Bureau,Donguan 523129,China)

机构地区：[1]广东省二沙体育训练中心,广州510105 [2]广东大宸建筑设计有限公司,广州510627 [3]广东工业大学土木与交通工程学院,广州510006 [4]东莞市建筑科学研究院有限公司,东莞523809 [5]东莞市东城街道住房和城乡建设局,东莞523129

出　　处：《建筑结构》2023年第2期135-141,共7页Building Structure

摘　　要：对于须进行加固的大吨位混凝土柱,当该多层框架结构仅下部框架柱局部混凝土强度明显低于设计要求时,采用外贴型钢-混凝土置换组合加固技术,可以避免上部质量合格的结构拆除重建,从而减小对工程的不利影响,同时可以降低加固成本以及缩短工期。该技术通过外包型钢将上部荷载传递至下部结构,钢板中预留空间,通过制定合适的置换施工顺序将缺陷混凝土进行置换,严格控制施工阶段的混凝土柱内部应力,取得了良好的加固效果。结合某加固工程实例,介绍了此组合加固方法的施工流程,并且对施工过程进行了ABAQUS有限元模拟分析,证明了此技术的安全可靠性,供类似混凝土结构加固改造设计和施工参考。For large tonnage concrete column which shall be reinforced,when only local strength of concrete frame column of the lower part of the multilayer frame structure significantly lower than the design requirements,the combined reinforcement technology of sticking steel-concrete displacement can avoid the demolition and reconstruction of the upper structure with qualified quality,so as to reduce the adverse impact on the project,and reduce the reinforcement cost and shorten the construction period.In this technology,the upper load is transferred to the substructure through the outer section steel,the space in the steel plate is reserved,and the defective concrete is replaced by the proper replacement construction sequence.The internal stress of the concrete column in the construction stage is strictly controlled,and good reinforcement effect is achieved.Combined with a reinforcement engineering example,the construction process of this method was introduced,and the ABAQUS finite element simulation analysis of the construction process was carried out,which proves the safety and reliability of this technology,and can be used as a reference for the reinforcement design and construction of similar concrete structures.

关 键 词：混凝土柱 外粘型钢 混凝土置换 组合加固 有限元模拟 

分 类 号：TU375.3[建筑科学—结构工程]