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北京新机场飞机维修库:为亚洲最大 可同时修12架

2018-04-23 10:19:55   北京日报 

在建的南航新机场项目土方护坡冠梁钢筋绑扎浇筑已完成。本报记者 潘之望摄

在建的南航新机场项目土方护坡冠梁钢筋绑扎浇筑已完成。本报记者潘之望摄

原标题:探访北京新机场:亚洲最大飞机维修库雏形初现

新机场建亚洲最大飞机维修库

本报讯(记者范晓)随着北京新机场“凤凰展翅”露芳容,位于新机场西北角的亚洲最大飞机维修机库也雏形初现。记者日前现场探访发现,这座由南航打造的机库可同时容纳12架飞机维修,405米的大跨度钢结构撑起一个庞大的无柱空间。

在塔吊林立的北京新机场西北角,上百根混凝土结构柱正在节节攀高。根据工期计划,该机库将于今年8月钢结构主体完工,年底前实现封顶封围,为明年的装修工作做好准备。

“机库长405米,比目前首都机场亚洲最大跨度的Ameco空客A380机库跨度大了近50米。机库进深100米,大厅净高30米,可同时容纳包含两架A380在内的5架宽体客机及3架窄体客机同时进库维修,机库大厅面积相当于5个标准足球场。”南航机库项目经理马大光介绍说。

飞机维修机库就建在寸土寸金的机场跑道边,上空便是飞机起降通道,建造超大跨度的机库也是航空公司提高土地利用效率的解决方案。这么大的跨度,中间还不能有支柱,怎么办?必须依靠最强的钢屋盖网架。

“2架A380和3架B777宽体机并排摆放,中间再停六架窄体机,这是将来机库的常规维修布局。”中国航空规划设计研究总院副总结构师赵伯友说,经过优化设计,405米的大跨度钢屋盖网架结构,包括机库屋面、钢桁架、吊车梁、钢檩条等,合计重量约10500吨。这万吨钢网架的用钢量相当于一艘巨轮,先完成安装,再从地面整体提升至30米高的屋顶。

机库在节能、供暖方面也采用了不少新技术和新材料。屋面保温层选用150毫米厚泡沫玻璃保温板,这种性能优越的保温材料尺寸稳定性好,膨胀系数较低,与混凝土、砂浆膨胀系数相近,还具有吸声、防潮、防火、抗压、轻质等特点,不易被老鼠、昆虫等动物破坏。

另外,机库周围还设计了下凹式绿地,营造微地形,减少低洼地,防止内涝。“下凹绿地占绿地面积不小于50%。”马大光介绍,有效调蓄容积3550立方米的雨水调蓄池,将使得雨水削峰率接近一半。

据悉,北京新机场南航基地项目建设内容包括运行及保障用房项目、单身倒班宿舍项目、航空食品区项目、机务维修区项目、货运区项目五大功能区,都在加快建设。

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