大连梭鱼湾足球场罩棚结构健康监测及应用
Application of structural health monitoring system for roof structure of Dalian Suoyuwan Football Stadium
张照博 1任亮 1李宏男 1郑帅 2周光毅 3伊廷华1
作者信息
- 1. 大连理工大学建设工程学部,辽宁大连 116024
- 2. 中国建筑第八工程局有限公司,上海 200135
- 3. 大连理工大学建设工程学部,辽宁大连 116024;中国建筑第八工程局有限公司,上海 200135
- 折叠
摘要
大连梭鱼湾足球场的屋盖结构是基于张拉结构延拓的一种自平衡外凸形轮辐式索网结构.为保证延拓设计后的结构安全和解决新型大跨空间结构形式健康监测的重点及难点,针对大连梭鱼湾足球场的罩棚结构建立了由结构层、传感层、数据采集与分析层组成的结构健康监测系统,动态监测结构在多种环境荷载下的实时响应.获取了外荷载由索撑体系中的径向承重索传递至外环柱撑体系中摇摆柱和柱间人字斜撑的体系间荷载传递路径,以及索撑体系中"稳定索-撑杆-承重索"和柱撑体系中"摇摆柱-斜撑"的荷载传递路径和协同受力响应.结果表明,由健康监测系统获取的拉索与重要连接构件在七级风荷载和温度荷载下的索力分别为45kN和85kN,可用于实时评估结构的安全状态.此外,克服温度影响误差的长期监测结果显示结构的最大应力变化约为3MPa.
Abstract
The roof structure of Dalian Suoyuwan Football Stadium is a self-balancing convex cable-supported structure based on the extension of the tension structure.To ensure the structural safety after the innovative extension design and to solve the difficulties in the health monitoring of the structure,a structural health monitoring system consisting of a structural layer,a sensing layer,and a data acquisition and analysis layer was established for the roof structure,which dynamically monitored the real-time response of the structure under environmental loads.The intersystem load transfer paths from the load-bearing cables in the cable bracing system to the columns and diagonal braces in the column bracing system,and the load transfer paths and synergistic force responses of the'stabilizing cables-braces-load-bearing cables'in the cable bracing system and the'swaying columns-diagonal braces'in the column bracing system have been obtained.The results show that the mechanical responses of the tension cables and important connecting members under Class Ⅶ wind and temperature loads obtained by the health monitoring system are 45 kN and 85 kN,respectively,which can be used to assess the safety status of the structure in real time.In addition,the results of long-term monitoring,which overcomes the temperature effect error,show that the maximum stress change of the structure is about 3 MPa.
关键词
大连梭鱼湾足球场/结构健康监测/索力/应力/长期监测Key words
Dalian Suoyuwan Football Stadium/structural health monitoring/cable force/stress/long-term monitoring引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据