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(1 北京航化節(jié)能環(huán)保技術有限公司, 北京 100176;2 北京交通大學土木建筑工程學院, 北京 100044)
摘要: 北京 2022 年冬奧會和冬殘奧會場內主火炬是典型的舞美造型結構體,區(qū)別于傳統(tǒng)火炬,此次主火炬需要實現(xiàn)部分表演功能,而且在表演過程中要完成提升、翻轉和旋轉等動作. 主火炬結構區(qū)別于傳統(tǒng)結構,有限元分析包括多種設計工況,設計工況根據(jù)實際工作狀態(tài)確定. 同時,整體結構造型特殊,呈大面積薄壁狀,為典型的風敏感結構,結構設計規(guī)范中并沒有給出明確的風荷載數(shù)值供參考,采用了風洞試驗方法獲取了不同工作狀態(tài)下 0° ~360°各個風向角的風荷載,確立了真實的設計工況. 然后通過 ANSYS 有限元軟件建立主火炬結構的有限元模型,計算了結構在各種不同設計工況下的應力與位移,結果顯示:各個工況下主火炬應力滿足強度要求,位移滿足剛度要求. 在四場儀式上,主火炬結構完美地完成了表演任務.
關鍵詞: 冬奧會; 冬殘奧會; 主火炬; 有限元分析; 薄壁結構; 風洞試驗
中圖分類號:TU311. 41,TU395 文獻標志碼:A 文章編號:1002-848X(2023)09-0085-06
DOI:10. 19701 / j. jzjg. 20221265
Finite element analysis of Beijing 2022 Olympic Winter Games and Winter Paralympic Games cauldron in National Stadium under multi-load cases
HU Tao1, WANG Ruifang1, LIU Yue1, SONG Xiaofeng1, LI Bo2
(1 Beijing Aerospace-Petrochemical Energy Conservation & Enviroment Protection Technology Co. , Ltd. , Beijing100176, China; 2 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)
Abstract: Beijing 2022 Olympic Winter Games and Winter Paralympic Games cauldron in National Stadium is a typicaldance beauty modeling structure, which takes on part of the performance function different from traditional cauldron. Theperformance process must complete the lifting, the turning and the rotation and so on. The cauldron structure is differentfrom the traditional structure. The finite element analysis includes a variety of design cases which is determined according tothe actual working condition. At the same time, the structure is a special shape and a large area thin-walled structure,which is a typical wind-sensitive structure. There is no explicit wind load in the structural design code for reference, so thewind tunnel test was used to obtain the loads of 0 ° ~ 360 ° wind direction angles under different working cases, then thereal design cases were established. The finite element model of the cauldron structure was established by software ANSYS,and the stress and displacement of the structure were calculated. The results show that the stress meets the requirement ofstrength and the displacement meets the requirement of stiffness. The whole structure completed the performance taskperfectly in the four ceremonies.
Keywords:Olympic Winter Games; Winter Paralympic Games; cauldron; finite element analysis; thin-walled structure;wind tunnel test
∗ 國家重點研發(fā)計劃項目(2021YFF0308000) .
第一作者:胡濤,碩士,高級工程師,主要從事節(jié)能環(huán)保裝置和非標結構設計與研發(fā),Email:hut@ calt11. cn.
[引用本文] 胡濤,汪瑞方,劉悅,等. 北京 2022 年冬奧會和冬殘奧會場內主火炬結構多工況有限元分析 [ J]. 建筑結構,2023,53(9):85-90,6. HU Tao,WANG Ruifang,LIU Yue,et al. Finite element analysis of Beijing 2022 WinterGames and Winter Paralympic Games cauldron in National Stadium under multi-load cases[ J]. Building Structure,2023,53(9):85-90,6.
