主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2025, Vol. 44 ›› Issue (2): 256-261.

• • 上一篇    下一篇

杭州体育馆索网结构防火安全性研究

陈茗1,2,3, 林鸿达1,2,3, 王晓春4, 吴珂1,2,3   

  1. （1.浙江大学 城市火灾安全工程研究中心，浙江 杭州 310058；2.浙江大学 平衡建筑研究中心，浙江 杭州 310007；3.浙江大学 浙江省海洋岩土工程与材料重点实验室，浙江 杭州 310058；4.杭州市城乡建设委员会 消防管理处，浙江 杭州 310026）
  • 收稿日期:2024-04-17 修回日期:2024-05-26 出版日期:2025-02-15 发布日期:2025-02-15
  • 作者简介:陈 茗，浙江大学城市火灾安全工程研究中心工程师，硕士，主要从事建筑结构消防安全及火灾理论研究，浙江省杭州市西湖区余杭塘路866号，310058。

Study on fire safety of cable-net structure in Hangzhou Gymnasium

Chen Ming1,2,3, Lin Hongda1,2,3, Wang Xiaochun4, Wu Ke1,2,3   

  1. (1. Research Center for Urban Fire Safety Engineering, Zhejiang University, Hangzhou Zhejiang 310058, China;2. Center of Balance Architecture, Zhejiang University, Hangzhou Zhejiang 310007, China; 3. The Engineering Research Center of Oceanic Sensing Technology and Equipment,Ministry of Education, Zhejiang University,Zhoushan Zhejiang 316021, China; 4. Fire Management Division, Hangzhou Municipal Commission of Urban-Rural Development, Hangzhou Zhejiang 310026, China)
  • Received:2024-04-17 Revised:2024-05-26 Online:2025-02-15 Published:2025-02-15

摘要： 针对杭州体育馆索网结构火灾温度敏感性高、防腐层存在引燃风险的问题，本文综合考虑火源位置、火灾荷载、自动喷水灭火系统与排烟系统有效性等因素确定火灾场景，通过FDS获取能反映大空间特征的火灾升温曲线，计算最不利场景下的构件温升，采用ANSYS结合热重试验分析索网结构的防火安全性。研究表明，由于吊顶对火羽流与高温烟气的阻挡，体育馆的最不利火源位置为中央吊顶边缘正下方，索网结构最高温度可达193 ℃，与场地中央火灾相比，承重索与拉杆的最高温度分别增加约119%与53%。杭州体育馆索网防腐层的引燃温度为244 ℃，被引燃的风险较低。索网结构构件在最不利荷载组合作用下的承载力与临界温度、结构整体稳定性和跨中最大竖向挠度均满足现行的抗火性能要求。研究结果可为大空间索网结构的抗火设计提供参考。

关键词: 体育馆, 索网结构, 防腐层, 引燃风险, 抗火性能

Abstract: The Hangzhou Gymnasium was built with the cable-netstructure, posing severe fire safety issue, e.g.,high temperature sensitivity and potentia lignition risk of the anti-corrosion layer. In this work, the fire scenarios are designed by considering various fire locations, fire loads, the effectiveness of sprinkler and smoke exhaustsystems. The FDS software is used to obtain the fire temperature rise in large-open spaces,and the temperature rise of structural components is calculated under the most adverse scenario. Based on the numerical result, the fire safety of the cable-netstructure is then analyzed using ANSYS and thermogravimetric tests. This work reveals that the most adverse fire location in the Hangzhou Gymnasium is directly below the edge of the central ceiling, which is owing to the central ceiling’s obstruction of the fire plume and high-temperature smoke. In the most adverse fire location, the highest temperature of the cable-net structure could reach 193 °C. The highest temperature values of the load-bearing cables and tie rods are approximately 119% and 53% higher than the central fire case,respectively. The thermogravimetric test result shows that the ignition temperature of the anti-corrosive coating of the Hangzhou Gymnasium cable-net structure is 244 °C, indicating a low ignition risk. Moreover, under the most adverse load combination, the bearing capacity of the structural components, the critical temperature, the overall stability of the structure, and the maximum vertical deflection at the span center all meet the fire resistance requirements of current standards. This work provides a reference for the fire-resistant design of large-space cable-net structures.

Key words: gymnasium, cable-netstructure, anti-corrosive coating, ignition risk, fire resistance