西安咸阳国际机场T5航站楼超大面积异形曲面网架提升关键技术研究
张之浩 , 李晓威 , 马洁烽 , 杨熙华
建筑钢结构进展 ›› 2026, Vol. 28 ›› Issue (02) : 56 -64.
西安咸阳国际机场T5航站楼超大面积异形曲面网架提升关键技术研究
Research on Key Technologies for Ultra-Large-Area Irregular Curved Space Grid Structures: Xi'an Xianyang International Airport Terminal 5
大跨异形曲面网架常用于高铁站房、机场航站楼等公共建筑的屋盖结构,考虑其结构特点一般采用提升方式进行施工。然而,对于超大面积异形曲面网架,由于建筑造型各有不同且下部土建结构错层散布,无法采用单一的提升方式进行施工。本文以西安咸阳国际机场T5航站楼项目为背景,介绍了屋盖钢结构的施工思路。针对局部屋盖网架下弦高差大的特点,提出了异速等比同步旋转提升技术,该技术通过理论分析最大化降低了结构的拼装高度,使结构能够绕单轴旋转,减小了旋转提升的操作难度。根据项目实际情况介绍了具有较强实用性的空腹式提升架的形式与设计方法,对空腹式提升架不同构造形式对结构性能的影响进行了分析与对比,并给出推荐的提升架构造类型。此外,本文还提出了一种新型的装配式提升梁,并从受力性能、实用价值等方面将其与传统提升梁进行对比分析,为后续钢结构提升梁的设计与施工提供参考。
Large-span irregular curved space grid structures are commonly used in the roof structures of public buildings such as high-speed railway stations and airport terminals. Due to their structural characteristics, they are generally constructed using lifting methods. However, for ultra-large-area irregular curved space grid structures, due to the diverse distribution of building shapes and the staggered distribution of lower civil structures, a single lifting method cannot be used for construction alone. This paper introduces a construction idea of the roof steel structure based on the terminal 5 (T5) project of Xi'an Xianyang International Airport. In response to the large difference in chord height under the local roof truss, a synchronous rotation lifting technology with equal speed ratio is proposed. This technology minimizes the structural assembly height through theoretical analysis, completes rotation around a single axis, and simplifies the operation difficulty of rotation lifting. Based on the actual conditions of the project, this paper introduces the practical form and design method of the spaced built-up lifting frame without intermediate lacing or battens, analyzes and compares the influence of different construction forms of the lifting frame, and provides recommended types of lifting frame construction. At the same time, a new type of prefabricated lifting beam is proposed and compared with traditional lifting beams in terms of stress performance and practical value, providing a reference for the design and construction of steel structure lifting beams in the future.
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