研究表明:非预应力高性能混凝土梁具有良好的抗震性能,中等预应力度的高性能混凝土梁也具有较好的抗震性能。
Studies showed that non prestressed high performance concrete (HPC) beams had good seismic performance, and prestressed HPC beams also had better seismic performance.
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.
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.
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