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预应力混凝土桥梁由于其结构上使用性能的优点而成为我国高速公路上的主要桥型,在高速公路的扩建工程中,必须重视影响拓宽预应力混凝土桥梁结构性能的因素研究,从而在拓宽设计、施工中采取相应技术设施,保证工程质量。本文探讨了预应力混凝土桥梁拓宽技术,并就新旧预应力混凝土桥梁的沉降、变形和拓宽图式等问题,提出有关工程建议。
Prestressed concrete bridges are the main types of bridges on highway in our country because of their advantages in structural performance. In the expansion project of expressways, it is necessary to pay attention to the research on factors that will broaden the performance of prestressed concrete bridges, so as to broaden the design, The construction of appropriate technical facilities to ensure project quality. This paper discusses the widening technology of prestressed concrete bridges and puts forward some engineering suggestions on the settlement, deformation and broadening patterns of old and new prestressed concrete bridges.