核电厂安全壳预应力摩擦及锚固损失分析

在核电站安全壳的研究中，预应力的分析计算是十分重要的一部分。安全壳预应力筋分布密集、复杂，特别是在闸门洞口这个敏感部位更是出现了三维空间曲线形状，加大了摩擦损失，必须予以考虑。本文通过对CPR1000堆型安全壳预应力的摩擦及锚固损失分析，给出了反向摩擦影响长度的简单计算方法和安全壳标准段，闸门洞口附近以及安全壳穹顶预应力筋沿长度方向的应力变化曲线，供工程设计人员参考。

Analysis of prestressed friction and anchorage loss of nuclear power plant containment

In the study of nuclear power plant containment, the analysis and calculation of prestress is a very important part. The distribution of the prestressed tendons in the containment is dense and complex, especially in the sensitive part of the gate entrance, the three-dimensional space curve shape appears, which increases the friction loss, and must be taken into account. Based on the analysis of friction and anchorage loss of prestress in CPR1000 stacked containment, a simple calculation method of the length affected by reverse friction and the curve of stress variation along the length direction of the standard section of containment, near the gate entrance and the prestress reinforcement of the containment dome are given for reference by engineering designers.