In jacking of a strand in partial prestressed concrete girder, the total jacking force of the strand is the sum of controlled jacking force versus friction force inside jacks, and the friction force between strand and anchorage.

• 在部分预应力混凝土钢绞线张拉施工中 ,钢绞线总张拉力为控制张拉力与千斤顶内摩阻力、钢束与锚具的摩阻力之和。