It gave a research result on the manufacture technology of arch tube truss, and put forward firstly the instability hoisting technology of single truss.
探索出圆拱形管桁架的分段制作、现场拼接技术，首次开发了单榀桁架非稳定性吊装技术。
The stiff skeleton is a steel truss structure, which turns into a single cell and single box section of the main arch structure by filling and outsourcing concrete after swivel construction.
劲性骨架为钢管桁架结构，转体施工，之后，通过内填和外包混凝土构成单箱单室箱形截面的主拱结构。
The stiff skeleton is a steel truss structure, which turns into a single cell and single box section of the main arch structure by filling and outsourcing concrete after swivel construction.
劲性骨架为钢管桁架结构，转体施工，之后，通过内填和外包混凝土构成单箱单室箱形截面的主拱结构。
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