常用跨度桥梁指桥梁设计中用量大、较为常用的桥梁形式。高速铁路常用跨度桥梁技术是针对高速铁路建设需要而开展的研究项目,其主要的桥梁结构形式有预应力混凝土整孔简支箱梁和预应力混凝土连续箱梁等桥梁结构。我国高速铁路里程长、桥梁比例高、建设周期短、桥梁建设 Commonly used span of the bridge refers to the bridge in the amount of large, more commonly used forms of the bridge. The commonly used bridge technology of high-speed railway is a research project aimed at the needs of high-speed railway construction. Its main bridge structures include prestressed concrete full-aperture simply supported box girders and prestressed concrete continuous box girders. China’s high-speed railway mileage is long, the proportion of bridges is high, construction period is short, bridge construction