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(1 廣東省建筑設(shè)計研究院有限公司, 廣州 510010; 2 廣州大學(xué)土木工程學(xué)院, 廣州 510006)
摘要: 研究了溫度作用對廣州白云國際機楊 T3 航站樓超長結(jié)構(gòu)的影響,系統(tǒng)介紹了混凝土結(jié)構(gòu)和鋼結(jié)構(gòu)溫度作用的計算內(nèi)容、計算理論及計算方法,其中混凝土結(jié)構(gòu)溫度計算采用等效當(dāng)量溫差法和施工仿真分析法,兩種方法均考慮了后澆帶封閉時間及膨脹劑的影響. 計算結(jié)果表明,兩種方法計算的混凝土樓板應(yīng)力規(guī)律吻合較好,施工仿真模型結(jié)果比等效溫度模型結(jié)果略高 10% ~ 20%. 根據(jù)計算結(jié)果,提出了相應(yīng)措施,包括布設(shè)預(yù)應(yīng)力筋等. 針對T3 航站樓屋蓋鋼結(jié)構(gòu)超長問題,設(shè)計通過優(yōu)化支座布置、參數(shù),合理地釋放溫度應(yīng)力.
關(guān)鍵詞: 廣州白云國際機場; 超長結(jié)構(gòu); 溫度作用; 收縮徐變; 等效溫差
中圖分類號:TU398.7 文獻標(biāo)志碼:A 文章編號:1002-848X(2022)21-0066-07
DOI:10.19701 / j.jzjg.GDAD2202
Super-long structure analysis and design of Guangzhou Baiyun International Airport Terminal 3
TAN Jian1, OU Tong1, DAI Pengsen1, LIN Songwei1,2, LUO Chiyu1,LUO Jiexin1, LIU Siwei1, LIN Quanpan1
(1 Guangdong Architectural Design & Research Institute Co. , Ltd., Guangzhou 510010, China;2 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)
Abstract: The influence of temperature effect on super-long structure of Guangzhou Baiyun International Airport Terminal 3was studied, and the calculation content, calculation theory and calculation method of temperature effect of concretestructure and steel structure were systematically introduced. The temperature calculation of concrete structure adoptedequivalent temperature difference method and construction simulation analysis method. The two method considers theinfluence of the sealing time of the post-cast zone and the expansion agent. The calculation results show that the stress lawof the concrete floor calculated by the two methods is in good agreement, and the results of the construction simulationmodel are slightly higher than that of the equivalent temperature model by 10% ~ 20%, according to the calculation results,corresponding measures were putd forward, including the layout of prestressed tendons, etc. Aiming at the super-longproblem of the Terminal 3 roof steel structure, the design optimizes the bearing arrangement and parameters to release thetemperature stress reasonably.
Keywords:Guangzhou Baiyun International Airport; super-long structure; temperature effect; shrinkage and creep;equivalent temperature difference
∗國家自然科學(xué)基金(51778163).
第一作者:譚堅,碩士,正高級工程師,一級注冊結(jié)構(gòu)工程師,主要從事大跨度結(jié)構(gòu)設(shè)計工作,Email: 32272872@ gdadri. com.
[引用本文] 譚堅,區(qū)彤,戴朋森,等. 廣州白云國際機場三號航站樓超長結(jié)構(gòu)分析與設(shè)計[J]. 建筑結(jié)構(gòu),2022,52(21):66-72. TAN Jian,OU Tong,DAI Pengsen,et al. Super long structure analysis and design of Guangzhou BaiyunInternational Airport Terminal 3 [J]. Building Structure,2022,52(21):66-72.
