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粘贴纤维复合材加固法和粘贴钢板加固法以其施工操作简单、工期短、加固后对使用空间影响小等优点被广泛应用于各类受弯构件的加固中。而且对于大偏心受压构件,《混凝土结构加固设计规范》(GB 50367—2013)也允许采用粘贴纤维复合材加固法和粘贴钢板加固法进行加固。然而工程中常用的PKPM、YJK等结构计算分析软件仅仅给出了混凝土柱的轴压比,而未给出混凝土柱是属于大偏心受压柱还是属于小偏心受压柱。如果想采用粘贴纤维复合材加固法和粘贴钢板加固法对混凝土柱进行加固设计,就需要设计人员手工计算各个混凝土柱是否属于大偏心受压柱,这样无疑会增大很多工作量。为此,本文就混凝土柱的轴压比和大偏心受压的关系进行了推导,以方便设计人员在工作中使用。
Paste fiber composite reinforcement method and paste steel reinforcement method for its simple construction operation, short construction period, the advantages of small space after reinforcement has been widely used in the reinforcement of various flexural members. In addition, for large eccentric compression members, the “Code for Reinforcement Design of Concrete Structures” (GB 50367-2013) also allows the use of bonded fiber composite reinforcements and glued steel reinforcement. However, structural calculation and analysis software such as PKPM and YJK, which are commonly used in engineering, only give the axial compression ratio of concrete columns, but do not give concrete columns which belong to large eccentric compression columns or small eccentric compression columns. If you want to use the paste fiber composite reinforcement method and paste the steel reinforcement method to reinforce the concrete column design, you need to manually calculate the designer of each concrete column is a large eccentric compression column, this will undoubtedly increase a lot of workload. Therefore, this paper deduces the relationship between the axial compression ratio of concrete columns and the large eccentric compression to facilitate the use of designers in the work.