- 摘 要
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(1 西南交通大學土木工程學院, 成都 610031; 2 四川省建筑設(shè)計研究院有限公司, 成都 610095;3 四川省建筑設(shè)計研究院有限公司復雜結(jié)構(gòu)設(shè)計研究中心, 成都 610095;4 華西工程科技 (深圳) 股份有限公司, 深圳 518066)
摘要: 隨著超高層建筑施工的不斷增多,爬升模架系統(tǒng)也得到了廣泛應用,然而,爬升模架系統(tǒng)中的構(gòu)件會存在明顯初始缺陷,但在設(shè)計階段未被充分考慮,將影響爬模系統(tǒng)安全性. 此外,架體結(jié)構(gòu)中構(gòu)件規(guī)格過大的冗余度會增加系統(tǒng)自重和造價. 基于直接分析法,以構(gòu)件初始幾何缺陷為控制變量,采用 NIDA 程序?qū)δ硨嶋H工程所用施工爬升模架系統(tǒng)開展了多組二階非線性參數(shù)分析;通過調(diào)整應力比較小的構(gòu)件截面進行了結(jié)構(gòu)優(yōu)化分析. 研究表明:實際工況下,初始幾何缺陷對構(gòu)件截面承載能力以及系統(tǒng)變形影響較大,施工中應控制構(gòu)件變形;同時,經(jīng)優(yōu)化后,結(jié)構(gòu)應力比分布更加合理,用鋼量較優(yōu)化前減少了 12%.
關(guān)鍵詞: 爬升模架系統(tǒng); 超高層建筑施工; 直接分析法; 結(jié)構(gòu)優(yōu)化; 初始缺陷
中圖分類號:TU745. 1,TU755. 2 文獻標志碼:A 文章編號:1002-848X(2023)07-0085-05
DOI:10. 19701 / j. jzjg. SADI2318
Analysis and optimization of construction climbing formwork system based on direct analysis method
HE Jiabin1, XU Hu1, ZHAO Shixing2,3, LIU Dong4, LIAO Linxu1, YU Zhixiang1
(1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2 Sichuan ProvincialArchitectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China; 3 Complex Structure Design andResearch Center, Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China;4 HUASHI Engineering Technology (Shenzhen) Co. , Ltd. , Shenzhen 518066, China)
Abstract: With the increasing construction of super high-rise buildings, the climbing formwork system has also been widelyused. However, the components in the climbing formwork system will have initial defects obviously, but they are not fullyconsidered in the design stage, which will affect the safety of the climbing formwork system. In addition, excessivecomponent redundancy in the frame structure will increase the system’s own weight and cost. Based on the direct analysismethod, taking the initial geometric defects of components as the control variables, the NIDA program was used to carry outmultiple sets of second-order nonlinear parameter analysis for the construction climbing formwork system used in an actualproject. The structural optimization analysis was carried out by adjusting the section of the member with relatively smallstress. The research shows that under the actual working conditions, the initial geometric defects have a great influence onthe bearing capacity of the component section and the system deformation, and the deformation of the component should becontrolled during construction. At the same time, the structural stress ratio distribution is more reasonable afteroptimization, and the steel tonnage is reduced by 12% compared with that before optimization.
Keywords: climbing formwork system; construction of super high-rise building; direct analysis method; structureoptimization; initial defect
∗2021 年廣東省住房和城鄉(xiāng)建設(shè)廳科技創(chuàng)新計劃項目(2021-K20-230455).
第一作者:何佳斌,碩士研究生,主要從事建筑高處施工與墜落防護研究,Email:2194479227@ qq. com.
[引用本文] 何佳斌,許滸,趙仕興,等. 基于直接分析法的施工爬升模架系統(tǒng)優(yōu)化設(shè)計[ J]. 建筑結(jié)構(gòu),2023,53(7):85-89,97. HE Jiabin,XU Hu,ZHAO Shixing,et al. Analysis and optimization of construction climbing formworksystem based on direct analysis method[J]. Building Structure,2023,53(7):85-89,97.
