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文章针对浙江一级公路社后特大桥连续箱梁中隔梁的预应力钢绞线在张拉过程中意外滑出,经过原因分析,以及对梁体的影响程度,通过理论验算,根据不同荷载状态下的应力状况,阐述加固处理的必要性及最佳的加固时机,并提出处理方案,明确施工技术要求,并对加固作用进行机理分析,为该类加固维修处理治提供参考。
In this paper, the prestressed steel strand of the continuous box girder septal girder of the post-grade bridge of a highway in Zhejiang Province is accidentally slipped out during the tensioning process. After analysis of the reasons and the degree of influence on the beam body, State of the stress conditions, elaborated the necessity of strengthening treatment and the optimal timing of reinforcement, and proposed treatment programs, a clear technical requirements for construction, and reinforcement mechanism of the mechanism analysis for the treatment of such reinforcement treatment provide a reference.