改变结构体系加固方法在某框架结构加固改造中的应用  

Application of a Frame Structure Reinforcement and Reconstruction by the Reinforce Method of Changing the Structure System

作　　者：刘寒芳 屈俊童[2] 严水光 雷真[2] 

机构地区：[1]昆明市建设工程质量检测中心,云南昆明650200 [2]云南大学城市建设与管理学院,云南昆明650091

出　　处：《工程质量》2015年第10期44-47,62,共5页Construction Quality

摘　　要：以某"两跨"钢筋混凝土框架结构抽去中柱变"一跨"结构的实际工程加固改造为实例,介绍了该工程的概况、加固改造的目的,创造性地采用了增加桁架钢腹杆的方法,使原结构成为组合结构,改变了原结构受力体系,达到了加固改造的目的,并满足使用要求。针对该工程的加固改造设计,采用MIDAS/GEN建立了空间有限元模型,分析了加固前后结构构件的受力及变形特征,结果表明,改造加固后结构能满足结构承载力与正常使用功能,证明了该种方法的有效性,对类似工程的加固改造有极为重要的参考价值。With a Practical example of one actual project reinforcement and reconstruction which have to be removed the middle column In order to make the two-span Reinforced Concrete frame structure building to one-span. The engineering situation and the purpose of reinforcement and reconstruction are introduced. Steel truss is added creatively into the RC frame structure, and the stress system of the original structure is changed, then it becomes into a composite structure. The anticipated results of aim of reinforcement and reconstruction have been achieved, and could satisfy the use requirement. Aiming at design of this structure, the space finite element model to analysis stress and deformation characteristics of the structure is established with MIDAS/GEN. The results showed that this reinforced and reconstructed structure can satisfy its structure bearing capacity and normal usage function, meanwhile the proposed method is effective, this method has very important reference value to similar projects.

关 键 词：混凝土框架结构 桁架结构 组合结构 加固改造 MIDAS/GEN 

分 类 号：TU375.4[建筑科学—结构工程]