所有现场拼接都用美国材料试验协会的A325六角形头螺栓。
All field splices were bolted using ASTM A325 hex head bolts.
鉴于主体结构已施工，分区吊装、现场拼接给结构设计造成了更多困难。
Due to the main structure is almost completed, suspension setting and splice in subzone put forward high requirements to structure design.
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。
It gave a research result on the manufacture technology of arch tube truss, and put forward firstly the instability hoisting technology of single truss.
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