双机位机库超大型网架整体提升技术.doc

双机位机库超大型网架整体提升技术

中国东方航空公司双机位机库位于上海虹桥国际机场东北侧,其横向跨度l50m,纵向深度90m,面积14728m2,相当于两个标准足球场,可同时进行2架大型客机的维修、保养。
机库共设32根钢筋混凝土立柱,呈凹字形分布。
A轴处立柱为截面4m×2m、壁厚0.4m、高22.5m的矩形柱,其它为高25.9m的四肢组合柱。
两种组合柱的四肢间由高70cm、宽25cm的混凝土梁连接,连梁间中心距一般为3m。
由于大门处150m的跨度间不设柱子,因而A、B轴处4根柱子承受的荷载达网架总重量的三分之二。

该机库屋盖钢结构网架由21万套M22、M24扭剪型和M30大六角头的高强度螺栓将1000多种型号的杆件连接而成。
提升网架重量3200t

China Eastern Airlines hangar pairs located in Shanghai Hongqiao International Airport, northeast, its horizontal span l50m, vertical depth of 90m, an area of 14728m2, the equivalent of two standard pitches, which can carry out two major aircraft repair and maintenance. Hangar A total of 32 reinforced concrete columns, concave-shaped distribution. A column axis for the cross-section 4m × 2m, thickness 0.4m, high-22.5m rectangular columns, the other limb combination of high-25.9m column. Combination of columns between the two limbs by high-70cm, width 25cm of concrete beam connections, and even away from the beam center is generally 3m. As the gate between the span of 150m with no columns, and thus A, B-axis at four columns to withstand loads up to two-thirds of the total weight of truss.
Hangar roof steel truss from 21 million sets of M22, M24 and M30 torsional shear type high strength bolts with large hexagon head will be more than 1000 kinds of models of bars connection made. Enhance the grid weight of 3200t