变角张拉
strectch with varying angle
差异分步张拉
Differenlc-tension step by step
初始张拉控制应力
initial stress for tension control
吊索张拉方案
suspender tension procedure
二次张拉施工技术
Construction technology of twice tensioning
分级分组张拉
stretching in grade and batch
分阶段张拉
prestressed method with stage tensions