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从解决门式刚架主体强度或刚度不足的问题出发,结合某汽车库房实际工程,采用在门式刚架梁下弦加设预应力拉索的方法进行加固优化设计。通过加固前后对原门式刚架结构性能的影响分析研究表明,采用预应力拉索的方法进行加固安全可靠。同时介绍了该预应力拉索加固的节点设计与施工技术。
Based on the problem of insufficient strength or stiffness of the portal frame, combined with the actual project of a garage, the reinforcement and optimization design of the prestressed cable under the chord of the portal frame is adopted. Through the reinforcement of the original portal frame structure before and after the impact of structural analysis shows that the use of prestressed cable method of reinforcement is safe and reliable. At the same time, the design and construction technology of the prestressed cable reinforcement are introduced.