新郑国际机场T2航站楼网架提升及下部超长四叉钢斜撑安装技术.pdf

施工技术 2015年8月上 6 CONSTRUCTION TECHNOLOGY 第44卷第15期 D0I:10.7672/8js2015150006 新郑国际机场T2航站楼网架提升及下部超长 四叉钢斜撑安装技术 黄挡玉，王亚桥，杜跃锁，徐泽伟，谢亚辉 (中建三局集团有限公司工程总承包公司，湖北武汉430070) [摘要]郑州新郑国际机场T2航站楼工程主楼屋盖网架为正交斜放四角锥网架体系，呈双曲面造型，长319m 宽 263m 最大跨度达90m 面积约7.9万m2 通过8组四叉钢斜撑传力至主体结构型钢混凝土柱上，斜撑锥管截面规 格为(950~1600)mm×42mm 单根最重达50.8t.网架跨度和受力体系形态国内同类建筑较为少见.屋盖网架 采用“分区整体液压提升大悬挑分块吊装”施工技术，四叉钢斜撑采用支架滑移提升安装技术，通过深化设计、方 案优化和施工质量控制，确保主楼网架结构在9d工期内顺利完成，取得较大的经济和社会效益. [关键词]机场：网架；提升；钢斜撑；支撑平台；分级加载 [中图分类号]TU758.11 [文献标识码]A [文章编号]1002-8498(2015)15-0006-05 Construction Technology of Grid Lifting and Installation of Super-long Four-diagonal Steel Supports Below in Xinzheng International Airport Terminal T2 Huang Dangyu Wang Yaqiao Du Yuesuo Xu Zewei Xie Yahui General Contraction Company of CCTEB Wuhan Hubei 430070 China) Abstract:The roof structure of main building area in Xinzheng International Airport terminal T2 is orthogonal diagonal square pyramid grid with a hyperbolic model which is 319 meters at length and 263 meters at wide with the maximum span of 90 meters and area of 79 000 square meters.This grid structure transfers force to the steel reinforced concrete columns of the main structure through 8 groups of four- diagonal steel brace with a maximum weight of 50.8 tons whose sectional specification of cone tube is (950~1 600)mm x42mm.The span of the grid and the force system are relatively rare among domestic similar architectures.This paper adopts a construction technology of partition overall hydraulic lifting and large sus...