此外，由于梁纵向有非预应力钢筋和预应力钢筋，且拉、压区用钢量不同，所以钢筋约束不同，对梁的挠度影响较大。
Moreover, due to the non prestressed steel and prestressed steel, and the different amount of using steel in pulling and pressing areas, so the restrain of steel is different.
钢—混凝土组合梁是利用钢材宜受拉，混凝土宜受压的特点，将两种材料通过剪切连接件组合成为整体而共同受力的一种新型结构。
Steel-concrete composite beam is a new kind of structure, which combines steel and concrete to an integrity by the shearing connecting pieces and make them work together .
钢—混凝土组合梁利用了钢材受拉性能好、混凝土受压性能好的特点，将两种材料通过连接件组合成整体而共同受力的一种新型结构。
Steel-concrete composite bridge is a new type structure in which the steel and the concrete are integrated by connectors to take advantage of the respective properties of tension and compression.
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