40m+64m+40m铁路连续槽形梁设计

Design of (40 +64 +40)m Railway Continuous Channel Beam

槽形梁是一种粱、板组合形式的预应力结构,具有建筑高度低、节省路基土石方工程投资、养护简便及减少噪声等特点,在解决立交跨线处净空受控制的工程中。结合某线40 m+64 m+40 m铁路连续槽形梁,介绍了槽形梁的合理断面设计、构造细节、平面杆系及空间结构的分析计算过程和结果,以及设计中需要注意的问题。

Channel Beam is a kind of prestressed structure composed of beam and board, with the feature of lower building height, lower investment for subgrade volume of earth and stone, simple maintenance, lower noise and so on. It will be more and more widely adopted in solving the bead-way control on flyover bridge. Channel Beam is a complex space structure,but it has an obvious unity. In the light of a （40 ＋ 64 ＋40）m railway continuous channel beam in some line,this article introduces the analysis, calculation process and result of the rational section design, construction detail, plane linear elements and space structure of the channel beam. Some problems which should be noticed in the design is also pointed out in the article.