通过试验结合理论分析,找出对预应力较为敏感的静力影响参数,推算出了对后张法无黏结预应力混凝土梁残余预应力计算公式。充分考虑工程实际,提出了如何对计算公式中的参数根据实际情况进行修正。为探索混凝土结构的残余预应力的准确检测与推算做出了尝试。 Through experimental and theoretical analysis, the static influence parameters that are sensitive to prestressing force are found out, and the formula of residual prestressing for post-tensioned unbonded prestressed concrete beam is deduced. Taking full account of engineering practice, this paper proposes how to correct the parameters in the calculation formula according to the actual situation. An attempt was made to explore the accurate detection and calculation of the residual prestress of concrete structures.