西安建筑科技大学学报(自然科学版)

天长全民健身中心体育场钢结构屋盖施工过程分析

钱刚,计康生,谢坚,王明花,李运军,杨世昱

(安徽中亚钢结构工程有限公司,安徽合肥 230051)

关键词：大跨度钢结构; 钢结构安装; 模块化施工; 钢结构合拢; 钢结构卸载

Analysis on construction process of steel structure roof of Tianchang national fitness center stadium

QIAN Gang, JI Kangsheng, XIE Jian, WANG Minghua, LI Yunjun, YANG Shiyu

(Anhui Zhongya Steel Structual Engineering Co.,Ltd., Hefei 230051, China)

Keywords：long span steel structure; steel structure installation; modular construction; steel structure closed; steel structure unloading

DOI: 10.15986/j.1006-7930.2022.04.017

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天长全民健身中心体育场钢屋盖造型呈钻石状,主结构由径向片桁架、外环环向立体桁架和折线形平面桁架组成,弦杆交错布置,具有传力途径复杂、安装难度大的特点.将钢屋盖施工区域按建筑平面逆时针分为1～8区,从1区和8区分别按顺时针和逆时针逐步安装,施工顺序为:1区8区→2区7区→3区6区→4区5区.利用3D3S软件对管桁架拼装胎架、管桁架吊装单元、管桁架临时支撑方案、管桁架合拢、管桁架卸载方案等关键施工要点进行了施工分析.分析结果表明:管桁架吊装吊点布置、临时支撑的位置与数量设置、支撑卸载的先后顺序对钢结构屋盖的受力具有较大影响,本项目所选的施工技术,施工过程中结构挠度较小,构件应力比处于低应力状态,施工方法安全可靠.

The steel structure roof of Tianchang National Fitness center Stadium is diamond-shaped. The main structure is composed of the radial plate truss, the outer annular three-dimensional truss and the folded plane truss. The chords are staggered, which has the characteristics of complex force transmission and difficult installation. The construction area of steel roof is divided into 1～8 zones counterclockwise according to the construction plane, and the installation is done clockwise and counterclockwise respectively from Area 1 and 8. The construction sequence is as follows: Zone 1, Zone 8 → Zone 2, Zone 7 → Zone 3, Zone 6 → Zone 4, zone 5. 3D3S software is used to analyze the key construction points such as tube truss assembling frame, tube truss hoisting unit, tube truss temporary support scheme, tube truss closing and tube truss unloading scheme. The analysis results show that the hoisting point arrangement of pipe truss hoisting, the location and quantity setting of temporary supports, and the sequence of supporting and unloading have great influence on the stress of steel structure roof. All the construction technologies selected in this project are safe and reliable because the structural deflection is small and the component stress ratio is in a state of low stress during construction.

引言
1 工程概况
2 模块化施工工序
3 施工过程分析
4 施工关键技术
5 结论与建议

图1 天长全民健身中心效果图(体育馆左/体育场右)<br/>Fig.1 Renderings of Tianchang national fitness center (Gymnasium left; stadium right)

图1 天长全民健身中心效果图(体育馆左/体育场右)
Fig.1 Renderings of Tianchang national fitness center (Gymnasium left; stadium right)

图2 钢屋盖施工模块划分示意图<br/>Fig.2 Division diagram of the construction module

图2 钢屋盖施工模块划分示意图
Fig.2 Division diagram of the construction module

图3 钢屋盖合拢预留位置示意图<br/>Fig.3 Schematic diagram of the closed and reserved position

图3 钢屋盖合拢预留位置示意图
Fig.3 Schematic diagram of the closed and reserved position

图4 钢屋盖施安装工序图<br/>Fig.4 Steel roof installation process drawing

图4 钢屋盖施安装工序图
Fig.4 Steel roof installation process drawing

图5 钢屋盖临时支撑布置图<br/>Fig.5 Temporary support distribution of the steel roof

图5 钢屋盖临时支撑布置图
Fig.5 Temporary support distribution of the steel roof

图6 联立吊装单元拼装顺序图<br/>Fig.6 Assembly sequence diagram of simultaneous lifting units

图6 联立吊装单元拼装顺序图
Fig.6 Assembly sequence diagram of simultaneous lifting units

图7 典型安装单元示意图<br/>Fig.7 Schematic diagram of typical installation unit

图7 典型安装单元示意图
Fig.7 Schematic diagram of typical installation unit

图8 临时支撑设置剖面图<br/>Fig.8 Section of temporary support setting

图8 临时支撑设置剖面图
Fig.8 Section of temporary support setting

图9 支座斜柱临时支撑底座示意图<br/>Fig.9 Schematic diagram of temporary support base for oblique column

图9 支座斜柱临时支撑底座示意图
Fig.9 Schematic diagram of temporary support base for oblique column

图10 临时支撑顶部固定装置<br/>Fig.10 Temporary support top fixtures

图10 临时支撑顶部固定装置
Fig.10 Temporary support top fixtures

图11 胎架示意图<br/>Fig.11 Diagram of tire frame

图11 胎架示意图
Fig.11 Diagram of tire frame

图12 胎架验算位移图/mm<br/>Fig.12 Calculation displacement diagram of tire frame /mm

图12 胎架验算位移图/mm
Fig.12 Calculation displacement diagram of tire frame /mm

图13 三榀径向桁架施工步<br/>Fig.13 Construction steps for three trusses of radial truss

图13 三榀径向桁架施工步
Fig.13 Construction steps for three trusses of radial truss

图14 三榀径向桁架施工步位移验算结果/mm<br/>Fig.14 Calculation results of displacement of three trusses radial truss construction steps/mm

图14 三榀径向桁架施工步位移验算结果/mm
Fig.14 Calculation results of displacement of three trusses radial truss construction steps/mm

图15 三榀径向桁架施工步验算结果(轴力/kN)<br/>Fig.15 Checking results of construction steps for three trusses of radial trusses(axial force /kN)

图15 三榀径向桁架施工步验算结果(轴力/kN)
Fig.15 Checking results of construction steps for three trusses of radial trusses(axial force /kN)

表1 临时支撑方案最大挠度表/mm<br/>Tab.1 Table of maximum deflection of temporary support scheme /mm

表1 临时支撑方案最大挠度表/mm
Tab.1 Table of maximum deflection of temporary support scheme /mm

图16 临时支撑方案挠度计算结果/mm<br/>Fig.16 Deflection calculation results of temporary support scheme /mm

图16 临时支撑方案挠度计算结果/mm
Fig.16 Deflection calculation results of temporary support scheme /mm

表2 临时支撑方案各构件应力比统计表<br/>Tab.2 Statistical table of stress ratio of each member of temporary support scheme

表2 临时支撑方案各构件应力比统计表
Tab.2 Statistical table of stress ratio of each member of temporary support scheme

图17 升温标准组合结构位移图<br/>Fig.17 Displacement diagram of standard combination structure for temperature rise

图17 升温标准组合结构位移图
Fig.17 Displacement diagram of standard combination structure for temperature rise

图18 降温标准组合结构位移图<br/>Fig.18 Displacement diagram of cooling standard combination structure

图18 降温标准组合结构位移图
Fig.18 Displacement diagram of cooling standard combination structure

表3 卸载施工步施工计算结果<br/>Tab.3 Calculation results of unloading construction step

表3 卸载施工步施工计算结果
Tab.3 Calculation results of unloading construction step

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期刊信息

西安建筑科技大学学报(自然科学版)
（1957年创刊双月刊）

主管单位：陕西省教育厅

主办单位：西安建筑科技大学

主　　编：刘加平（院士）

副主编：史庆轩（常务）闫增峰

国内刊号：CN61-1295/TU

I S S N：1006-7930

地　　址：西安市雁塔路中段13号

国内发行：西安建筑科技大学学报编辑部

国外发行：中国出版对外贸易总公司

编辑出版：西安建筑科技大学学报编辑部