- 摘 要
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（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）
［摘要］海口美蘭國際機(jī)場T2航站樓總建筑面積29-6萬m2，平面尺寸為750m×405m。場地設(shè)防烈度為8度(0-3g)，屬于高烈度區(qū)，抗震設(shè)防類別為重點(diǎn)設(shè)防類，項(xiàng)目首次采用跨層設(shè)置隔震層的隔震方案，達(dá)到隔震層上部的混凝土框架及屋蓋鋼結(jié)構(gòu)支承結(jié)構(gòu)滿足降低設(shè)防烈度一度設(shè)計(jì)的相關(guān)要求。介紹了航站樓的結(jié)構(gòu)體系并詳細(xì)分析了以下三個(gè)結(jié)構(gòu)設(shè)計(jì)要點(diǎn)：根據(jù)海南地區(qū)特有的貝殼碎屑巖層，通過試驗(yàn)樁工程，解決了貝殼碎屑巖層樁基成孔、成樁難的問題，并優(yōu)化了基樁設(shè)計(jì)，結(jié)合隔震技術(shù)要求，基于變剛度調(diào)平設(shè)計(jì)方法進(jìn)行地基基礎(chǔ)設(shè)計(jì)，工程樁檢測成果表明達(dá)到設(shè)計(jì)預(yù)期；對于工程中大量的圓鋼管型鋼混凝土柱和鋼筋混凝土梁的連接，提出了一種新的連接方式，采用ANSYS軟件對此節(jié)點(diǎn)形式進(jìn)行有限元分析，研究了節(jié)點(diǎn)的受力性能和破壞形式，并且驗(yàn)證了此節(jié)點(diǎn)形式在工程中使用的可靠性，從而大量減少工地現(xiàn)場焊接工作量以保證施工質(zhì)量；工程采用緩粘結(jié)預(yù)應(yīng)力技術(shù)，這是一項(xiàng)新穎但尚未廣泛應(yīng)用的結(jié)構(gòu)技術(shù)，針對其具有張拉時(shí)效限制的特點(diǎn)，闡述了實(shí)際施工中的應(yīng)對策略。
［關(guān)鍵詞］海口美蘭國際機(jī)場； 跨層隔震； 貝殼碎屑巖層成樁； 圓鋼管型鋼混凝土柱節(jié)點(diǎn)； 緩粘結(jié)預(yù)應(yīng)力技術(shù)
中圖分類號：TU398+.7文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)20-0071-08
Structural design on T2 terminal building of Haikou Meilan International Airport
Wang Kui, Wu Zhongqun, Shu Weinong, Fang Yunfei, Cen Yongyi
(Beijing Institute of Architecture Design, Beijing 100045, China)
Abstract:The total area of T2 terminal building of Haikou Meilan International Airport is 296 000m2, and the plane dimension is 750m×405m. The seismic fortification intensity of the site is 8 degree(0.3g). It belongs to high seismic intensity zone, and the seismic fortification category is key fortification class. The cross-layer seismic isolation technique is applied for the first time. It meets the design requirements of reducing seismic fortification intensity of the concrete frame above the isolation and the supporting structure of the steel roof by one degree. The structural system was introduced and three key points of the design were analyzed. First, according to the peculiar shell debris rock layer in Hainan, after testing piles project, the problems of pore-forming of piles are reasonably solved and the design of piles is optimized. Combined with the requirements of seismic isolation technique, the foundation design was conducted based on the variable rigidity design method. The detection results meet the design expectations. Secondly, there were a large number of connections of circular concrete filled steel tubular columns and reinforced concrete beams, a new connection method was proposed. Using ANSYS software for finite element analysis, the mechanical performance and failure forms of the joints were studied, and the application reliability is validated to ensure the construction quality by reducing the welding work on the site. The retard-bonded prestressing technology was adopted, which was a new technique but not widely used. Due to its characteristic of the tension time limitation, its application strategies in the actual construction were described.
Keywords:Haikou Meilan International Airport; cross-layer seismic isolation; shell debris rock piling; joint of circular concrete filled steel tubular column; retard-bonded prestressing technology
作者簡介：王奎，碩士，工程師，Email：wangkui@biad.com.cn.
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