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.
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。
The paper mainly introduces raw material quality control, calculation of burden, stretch-draw force and elongation value, construction technology of non-bonding prestressed steel strand.
主要介绍无粘结预应力钢绞线的原材质量控制、配料、张拉力值、伸长值的计算及施工工艺。
The non—prestressed steel bars in ppc beams endure alternate stress under the repeated service loading.
部分预应力混凝土梁中的非预应力钢筋在反复运行荷载作用下承受交变应力。
The non—prestressed steel bars in ppc beams endure alternate stress under the repeated service loading.
部分预应力混凝土梁中的非预应力钢筋在反复运行荷载作用下承受交变应力。
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