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轮辐式索承网格屋盖钢结构单道胎架施工技术

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泰安体育场作为山东省泰安市的新地标,其钢结构屋盖采用轮辐式索承网格结构,通过68榀径向索和1道中央环索形成张拉结构体系,最大悬挑跨度为45 m.通过数值分析对施工过程进行了精细化稳定性分析,针对不规则构件吊装的工程技术难点,进行了吊装方案的设计与优化;考虑到成本控制与施工周期,极具创新性地采用了径向单道胎架作为屋盖施工过程中的临时支撑,结合工程实际情况设计了胎架转换结构,并对单道胎架整体在多种可能的荷载组合作用下进行验算与校核.通过对体育场屋盖施工全过程的模拟以及对安装过程中的重难点进行优化分析,为现场施工的安全顺利开展提供了技术保障,可为其他类似采用单道胎架施工方法的工程提供施工方案设计的新思路.
Key Construction Technology of the Single Jig Frame for Spoke-Type Cable-Supported Steel Roof Grid Structure
Tai'an stadium is a new landmark of Tai'an City,Shandong Province.The steel roof of Tai'an stadium adopts the spoke-type cable-supported grid structure,which is formed by 68 radial cables and a central ring cable.The span of the maximum cantilever reaches 45 m.By using a numerical analysis,the stability analysis of all construction steps was carried out.Aiming at the technical difficulties in hoisting irregular components,the hoisting scheme was designed and optimized.Considering the construction period and costs,an innovative single jig frame in the radial direction was used as temporary supports in the construction process of the steel roof,and the transformation structure of the jig frame was designed combining the engineering practice.Besides,the whole jig frame was verified by numerical analysis under the combined action of multiple loading.Through the simulation of the whole construction process of stadium roof and an optimization analysis of the complex installation process,this paper provides a technical support for the construction practice and offers some new ideas of construction scheme design for similar projects.

spoke-type cable-supported grid steel roofconstruction process simulationhoisting scheme improvementsingle jig framefinite element analysis

强旭红、张至毅、张猛、姜旭

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同济大学 土木工程学院,上海 200092

山东华亿钢机股份有限公司,山东 曲阜 273100

轮辐式索承网格屋盖钢结构 施工过程模拟 吊装方案优化 单道胎架 有限元分析

国家自然科学基金国家重点研发计划重点专项

521428042020YFD1100403

2024

10.13969/j.cnki.cn31-1893.2024.08.010

建筑钢结构进展
同济大学

建筑钢结构进展

CSTPCD北大核心
影响因子：0.806
ISSN：1671-9379
年,卷(期)：2024.26(8)