拱梁组合式桥梁使拱与梁在受力方面的优点得以充分发挥，呈现出优良、稳定的经济指标与美观的外形，因而是一种具有很大潜力的桥梁结构型式。
The arch-beam composite bridge gives full play to advantages of the arch and beam in the load-carrying capability, showing superior and stable economic indicators and the aesthetic appearance.
通过对先张法预应力梁板预拱度产生的过程进行分析，揭示预应力梁板预拱度产生的内在原因。
The paper analyses the formation process for pretensioning prestressed hollow plank precamber, announces inside reason for prestressed hollow plank precamber to public.
对主梁腹板下料提出了几种不同形式的预拱曲线，并说明了各种不同形式预拱曲线特点及各种不同起重机主梁腹板下料拱度曲线的选择。
Some different pre-eambering curves used in web cutting are presented and their features analysed, with further description of their use for different types of crane.
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