论文部分内容阅读
分析了影响无粘结部分预应力混凝土 ( UPPC)梁桥无粘结预应力筋极限应力的主要因素 ,并简要评述了国内外现有的无粘结预应力筋极限应力计算方法与公式。在分析国内外大量试验数据和文献研究的基础上 ,建立了无粘结预应力筋极限应力实用计算方法。通过与试验结果和规范 [1]公式计算值对比分析 ,表明实用计算方法的正确性和可靠性。
The main factors affecting the ultimate stress of unbonded prestressed tendons in unbonded prestressed concrete (UPPC) girder bridges are analyzed. The calculation methods and formulas for the ultimate stress of unbonded prestressed tendons at home and abroad are briefly reviewed. Based on the analysis of a large number of domestic and international experimental data and literature research, a practical calculation method of ultimate stress of unbonded prestressed tendons was established. By comparing with the experimental results and the formula [1], it shows the correctness and reliability of the practical calculation method.