展览大厅的屋面为弧形大跨度拉索焊接箱型钢梁结构，接待厅和会议中心的屋面为工字型钢梁结构。
The roof of the exhibition center is a cable tensioned box steel shape beam structure, and the roof of the reception hall and the conference center are I shape steel beam structures.
针对“回”字型钢筋混凝土整体框架结构的复杂特点，采用了切割分块、网路式封闭起爆网路、整体防护等有效技术手段。
According to its special structure, some useful ideas, such as cutting the whole into sections, the closed net initiating network, and overall protection are adopted.
型钢选用工字钢、角钢或槽钢，或者采用钢板焊接为“十”字型截面。
The bar steels adopt I steels, Angle steels or channel steels, or adopt steel plates which are welded into a cross shaped section.
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