基于直接分析法的施工爬升模架系统优化设计

引用文献:

何佳斌 许浒 赵仕兴 刘东 廖林绪 余志祥. 基于直接分析法的施工爬升模架系统优化设计[J]. 建筑结构,2023,48(07):85-89,97.

HE Jiabin XU Hu ZHAO Shixing LIU Dong LIAO Linxu YU Zhixiang. Analysis and optimization of construction climbing formwork system based on direct analysis method[J]. Building Structure,2023,48(07):85-89,97.

作者:何佳斌 许浒 赵仕兴 刘东 廖林绪 余志祥
单位:西南交通大学土木工程学院 四川省建筑设计研究院有限公司 四川省建筑设计研究院有限公司复杂结构设计研究中心 华西工程科技深圳)股份有限公司
摘要:随着超高层建筑施工的不断增多,爬升模架系统也得到了广泛应用,然而,爬升模架系统中的构件会存在明显初始缺陷,但在设计阶段未被充分考虑,将影响爬模系统安全性。此外,架体结构中构件规格过大的冗余度会增加系统自重和造价。基于直接分析法,以构件初始几何缺陷为控制变量,采用NIDA程序对某实际工程所用施工爬升模架系统开展了多组二阶非线性参数分析;通过调整应力比较小的构件截面进行了结构优化分析。研究表明:实际工况下,初始几何缺陷对构件截面承载能力以及系统变形影响较大,施工中应控制构件变形;同时,经优化后,结构应力比分布更加合理,用钢量较优化前减少了12%。
关键词:爬升模架系统;超高层建筑施工;直接分析法;结构优化;初始缺陷;
作者简介:何佳斌,硕士研究生,主要从事建筑高处施工与坠落防护研究,Email:2194479227@qq.com。赵仕兴,硕士,教授级高级工程师,一级注册结构工程师,英国注册结构工程师,主要从事高层建筑结构、复杂结构的设计与研究,Email:316458931@qq.com。
基金:2021年广东省住房和城乡建设厅科技创新计划项目(2021-K20-230455)。
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参考文献[1] 夏巨伟.上海国际金融中心液压爬模外爬架的计算分析[J].空间结构,2016,22(3):77-84.
[2] 张胜良,陆静文,黄曙亮,等.超高层建筑爬模施工测量技术在望京SOHO工程的应用[J].测绘通报,2013(S1):137-139.
[3] 杨艳超,高远,郑吉成,等.津湾广场分段爬升液压爬模施工技术[J].施工技术,2017,46(24):12-15,36.
[4] 李江华,魏晨康,王强,等.武汉绿地中心立面曲变巨柱爬模施工技术[J].施工技术,2017,46(22):5-8,18.
[5] 苏云飞,李方慧.基于BIM-Ansys的超高层液压爬模结构安全性分析[J].黑龙江大学工程学报,2019,10(3):20-26.
[6] 胡仕成,李俊,刘晓宏.高空下爬模的风振响应与疲劳寿命分析[J].制造业自动化,2020,42(1):103-107,144.
[7] 路江龙,杨铖,杨律磊,等.苏州丝绸博物馆“四方雨”钢结构分析与设计[J].建筑结构,2019,49(1):54-59.
[8] 杨杰.某核岛厂房屋盖结构稳定性分析和设计[J].建筑结构,2022,52(S1):631-634.
[9] 周露.杨行体育中心钢屋盖基于直接分析法的结构稳定性分析[J].建筑结构,2020,50(S2):580-584.
[10] 刘东,张元植,陈磊,等.西安环球贸易中心塔楼核心筒模架施工关键技术研究[J].施工技术,2019,48(8):16-18,99.
[11] 液压爬升模板工程技术标准:JGJ/T 195—2018[S].北京:中国建筑工业出版社,2018.
[12] 钢结构设计标准:GB 50017—2017[S].北京:中国建筑工业出版社,2018.
[13] 混凝土结构工程施工规范:GB 50666—2011[S].北京:中国建筑工业出版社,2012.
[14] 建筑结构可靠性设计统一标准:GB 50068—2018[S].北京:中国建筑工业出版社,2019.
[15] 刘伟,舒赣平.直接分析设计法中的受压构件等效初始缺陷研究[J].建筑结构学报,2021,42(6):199-205.
Analysis and optimization of construction climbing formwork system based on direct analysis method
HE Jiabin XU Hu ZHAO Shixing LIU Dong LIAO Linxu YU Zhixiang
(School of Civil Engineering, Southwest Jiaotong University Sichuan Provincial Architectural Design and Research Institute Co., Ltd. Complex Structure Design and Research Center, Sichuan Provincial Architectural Design and Research Institute Co., Ltd. HUASHI Engineering Technology (Shenzhen) Co., Ltd.)
Abstract: With the increasing construction of super high-rise buildings, the climbing formwork system has also been widely used. However, the components in the climbing formwork system will have initial defects obviously, but they are not fully considered in the design stage, which will affect the safety of the climbing formwork system. In addition, excessive component redundancy in the frame structure will increase the system's own weight and cost. Based on the direct analysis method, taking the initial geometric defects of components as the control variables, the NIDA program was used to carry out multiple sets of second-order nonlinear parameter analysis for the construction climbing formwork system used in an actual project. The structural optimization analysis was carried out by adjusting the section of the member with relatively small stress. The research shows that under the actual working conditions, the initial geometric defects have a great influence on the bearing capacity of the component section and the system deformation, and the deformation of the component should be controlled during construction. At the same time, the structural stress ratio distribution is more reasonable after optimization, 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; structure optimization; initial defect
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