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近年来我国采用钻孔灌注混凝土桩新技术修建桥梁,工程质量好,施工速度快,下部结构的造价有很大程度的降低。为了使桥梁设计达到技术经济合理,必须从桥梁的上下部结构作综合的技术经济比较。本文在以下叙述灌注混凝土桩墩台的特点以及与上部结构设计的相互技术经济影响。某桥根据1/50流量计算,拟定下述三种形式。 (1)上部结构为4孔净跨10米的装配式T型梁桥,下部采用重力式墩台。
In recent years, China has adopted the new technology of cast-in-place concrete piles to construct bridges. The construction quality is good, the construction speed is fast, and the cost of the substructure is greatly reduced. In order to make the bridge design technically and economically reasonable, it is necessary to make a comprehensive technical and economical comparison of the upper and lower structures of the bridge. This paper describes the following characteristics of perfusion concrete pile piers and mutual technical and economic impact with the superstructure design. A bridge based on 1/50 traffic calculation, the formulation of the following three forms. (1) The upper structure is a fabricated T-type beam bridge with 4 holes and 10 meters of net span, and the lower part adopts gravity pier.