【摘要】 预应力筋伸长值计算公式在有关行业的现行《规范》及有关的书籍中已有一些计算公式可选用，但这些计算公式的计算结果之间存在一定的误差，这是一种公人本身存在的误差，有时这种误差比较大，从而使施工人员无所适从。通过对有关公式的计算结果进行分析，并加以修正，然后用修正后的公式计算其预应力筋伸长值，计算结果与精确值接近，从而解决了因伸长值校核不符合《规范》的实际问题。更多还原

【Abstract】 The builders can use the formula in the ’Standard’of the rele vant iudustries or in some books concerned to calculate the elongation value of the prestressing force. But in the calculation there exist some errors, by the for mula itself, sometimes a bit great, so the builders do not know what to do. If they use the revised formula to calculate the pretressing force elongation value which is close to the accurate value, by analyzing the results in the formula concerned and correcting it, they can solve some practical problems that the valtle will accord with the ’Standard’ when corrected.更多还原