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文章以某高速公路装配式结构简支转连续体系小箱梁桥为例,对桥梁运营中出现的主梁出现结构性裂缝病害归纳汇总和成因分析。通过增大截面+体内预应力方法来恢复结构承载能力及正常使用功能。从新建桥梁设计和管养的角度出发,结合现行相关规范,对发生上述病害的桥梁进行成因分析、加固设计,以期给桥梁设计单位、桥梁管养单位在桥梁设计、桥梁运营管养的各个阶段提供参考,从而尽可能减少上述桥梁病害的发生,保证桥梁安全舒适的运营。
Taking a simple box - girder bridge with simple structure and simple structure to continuous system of freeway as an example, this paper summarizes and analyzes the causes of structural cracks in the main girder in the bridge operation. By increasing the cross-section + in-body prestress method to restore the structure carrying capacity and normal use function. From the perspective of the new bridge design and management, combined with the current relevant norms, the occurrence of the bridge of the disease causes analysis, reinforcement design, with a view to the bridge design units, bridge custody units in the bridge design, bridge operation and management of the various stages Provide reference, so as to minimize the occurrence of the above-mentioned bridge diseases and ensure the safe and comfortable operation of the bridge.