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介绍预应力先张梁钢绞线砂筒单根放张的工作原理。分析了砂筒浮力变形的情况下对钢绞线应力损失的影响 ,从而论证了砂筒单根放张的可行性
Describe the working principle of the prestressed pretensioned beam steel strand sand drum. The influence of the buoyancy deformation of the sand tube on the stress loss of the strand is analyzed, which proves the feasibility of releasing the single tube of the sand tube