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计算予应力钢筋混凝土反挠度一般采用近似方法,由于张拉力Hnp所引起反挠度可以忽略不计。本文目的在于推导更精确计算反挠度的公式并考虑予应力钢筋混凝土梁中不同钢丝束的布置方式来进行反挠度计算的比较。同时在管道中未压浆之前推导了计算钢筋混凝土徐变与钢丝滑动与徐舒所引起的予应力损失的公式。
Calculating the inverse deflection of prestressed reinforced concrete generally adopts the approximate method, and the anti-deflection caused by the tensile force Hnp is negligible. The purpose of this paper is to derive a more accurate formula to calculate the camber and consider the comparison of camber calculations for different steel wire bundles in prestressed reinforced concrete beams. At the same time, the formulas for calculating the prestressing loss caused by the creep of steel reinforced concrete and the sliding of steel wire and Xu Shu were deduced before the non-grouting in the pipeline.