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.
由于失去与原有相邻材料的约束作用，小试块切割的边缘处残余应力减小，甚至由残余压应力转变为残余拉应力。
Owing to the loss of their adjacent material constraint, the residual stress on the cutting edge of the small test block reduces, even changing from compressive stress to tensile stress.
由于失去与原有相邻材料的约束作用，小试块切割的边缘处残余应力减小，甚至由残余压应力转变为残余拉应力。
Owing to the loss of their adjacent material constraint, the residual stress on the cutting edge of the small test block reduces, even changing from compressive stress to tensile stress.
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