(1 北京交通大学土木建筑工程学院, 北京 100044; 2 结构风工程与城市风环境北京市重点实验室, 北京 100044; 3 北京北控京奥建设有限公司, 北京 102100; 4 中国建筑设计研究院有限公司, 北京 100044; 5 中北大学信息与通讯工程学院, 太原 030051)

摘要: 赛道挡风是保证冬奥会比赛如期进行的关键. 首先基于气象站监测数据,利用独立风暴法开展了北京冬奥会延庆赛区内气象观测风速分析,获得了赛区内气象观测位置 50 年重现期的基本风速. 进而对延庆赛区进行了地形风洞试验,获得了气象站与赛区建筑之间的风速比例关系,给出了赛区关键位置 50 年重现期的基本风压.然后,采用节段模型的方式进行了国家雪车雪橇中心风洞试验,获得了主体结构设计所需的体型系数和围护结构设计所需的极值风压系数. 之后对国家高山滑雪中心滑降赛道进行赛时风环境评估,并通过风洞试验获得了雪道挡风墙的挡风性能参数,直接应用于滑降赛道挡风设计. 结果表明:延庆赛区仅有 1 日比赛延期至次日,其他比赛均在计划当日进行,挡风墙的设置保证了冬奥会高山滑雪比赛的顺利进行.

关键词: 冬奥会; 办赛设施; 抗风; 挡风; 风洞试验; 风荷载

中图分类号:TU317+. 1 文献标志码:A 文章编号:1002-848X(2023)09-0091-06

DOI:10. 19701 / j. jzjg. 20221403

Research on wind resistance and windbreak design for Beijing 2022 Olympic Winter Games facilities in Yanqing

LI Bo1,2, LIU Kun3, NA Ling3, LIU Wenting4, TIAN Yuji1,2, CHEN Ping5, BAI Fan1,2

(1 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2 Beijing Key Laboratoryof Structural Wind Engineering and Urban Wind Environment, Beijing 100044, China; 3 Beijing Enterprises JingaoConstruction Co. , Ltd. , Beijing 102100, China; 4 China Architectural Design and Research Institute Co. ,Ltd. , Beijing 100044, China; 5 School of Information and Communication Engineering,North Central University, Taiyuan 030051, China)

Abstract: The windbreak of the downhill track is the key to ensure that Olympic Winter Games can be held on schedule.Based on the monitoring data of meteorological stations, the analysis of meteorological observation wind speed in YanqingCompetition Area of Beijing Olympic Winter Games was carried out firstly by using the independent storm method, and thewind speed of 50-year return periods at the meteorological observation positions was obtain. Thereafter, the windenvironment wind tunnel test for Yanqing Competition Area was carried out, the wind speed proportional relationshipbetween the meteorological station and the competition area buildings was obtained. The design wind pressure of the keypositions in the competition area with a return period of 50-year return was given. Then, the wind tunnel test of NationalSliding Center was carried out by using the segmen model, and the shape coefficient required for the main structure designand the extreme wind pressure coefficient required for the envelope design were obtained. The wind environment of thedownhill track of National Alpine Skiing Center was evaluated during the race, and the windbreak performance parametersof the windbreak wall of the ski track were obtained through the wind tunnel test, which were directly applied to thewindbreak design of the downhill track. The results show that only 1 day of the event in Yanqing Competition Area waspostponed to the next day, and other events were held on the planned day. The installation of the windbreak wall ensuredthe smooth progress of the alpine skiing event in Olympic Winter Games.

Keywords:Olympic Winter Games; competition facility; wind resistance; windbreak; wind tunnel test; wind load

∗中央高校基本科研业务费专项(2022JBZY030),北京市科技计划资助项目(Z201100005820007),高等学校学科创新引智计划(B13002).

第一作者:李波,博士,教授,主要从事风工程领域研究,Email:libo_77@ 163. com.

[引用本文] 李波,刘坤,那苓,等. 北京 2022 年冬奥会延庆赛区办赛设施抗风与挡风设计关键技术研究[ J]. 建筑结构,2023,53(9):91-96. LI Bo,LIU Kun,NA Ling,et al. Research on wind resistance and windbreak design for Beijing2022 Olympic Winter Games facilities in Yanqing[J]. Building Structure,2023,53(9):91-96.