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预应力混凝土基于其较高的强度、刚度以及抗裂能力在大跨度桥梁的施工中具有较为广泛的应用。随着悬臂浇筑施工技术等现代化施工工艺和方法的不断应用,大跨径桥梁无支撑施工技术不断得到优化,使大跨径预应力混凝土桥梁施工质量有了很好的改善。跨中下挠是混凝土桥梁施工的常见病害,技术人员需要结合工程的实际状况,采用合理的解决措施和加固方法,提高桥梁的建设质量。本文结合实际工作经验就大跨径预应力混凝土桥梁病害与加固方法进行了详细的讨论。
Prestressed concrete is widely used in the construction of long-span bridges based on its high strength, stiffness and crack resistance. With the continuous application of modern construction techniques and methods such as cantilever pouring construction technology, the construction technology of long-span bridges without support is continuously optimized, so that the construction quality of long-span prestressed concrete bridges has been greatly improved. Span is a common disease of concrete bridge construction, technicians need to combine the actual conditions of the project, using reasonable solutions and reinforcement methods to improve the quality of the bridge construction. In this paper, the practical experience of large span prestressed concrete bridges disease and reinforcement methods were discussed in detail.