预应力钢绞线理论伸长量计算探讨

Discussion on Calculation of Theoretical Elongation of Prestressed Steel Strands

结合河南省郑州市陇海路跨南水北调总干渠的特大桥工程实例,介绍了不同布置形式下预应力钢绞线理论伸长量的计算方法。同时总结了影响理论伸长量的几种因素,并对理论伸长量计算中存在的常见问题进行探讨,提出了自己的看法和建议。

This paper introduces the calculation method of the theoretical elongation of prestressed steel strands under different layouts in combination with the example of the bridge in the South-to-North Water Transfer Project of Longhai Road, Zhengzhou City, Henan Province. At the same time, several factors affecting the theoretical elongation are summarized, common problems existing in the calculation of theoretical elongation are discussed and their own views and suggestions are put forward.