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本文通过研究梁的荷载—挠度曲线对部分预应力混凝土进行受力分析．介绍了计算截面的极限抗弯弯矩的两种方法．并提出今后强度计算的发展趋势。
In this paper, the prestressed concrete subjected to force analysis is studied by studying the load-deflection curve of the beam. 2. Two methods to calculate the ultimate bending moment of the cross section are introduced. And propose the development trend of strength calculation in the future.