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 ›› 2024, Vol. 43 ›› Issue (10): 1435-1442.

• • 上一篇    下一篇

火灾下结构构件远程超温报警装置研究

项凯1,2,3, 潘雁翀1,2,3, 刁晓亮1,2,3, 宋天诣4   

  1. （1. 应急管理部天津消防研究所，天津 300381；2. 工业与公共建筑火灾防控技术应急管理部重点实验室，天津 300381；3. 天津市消防安全技术重点实验室，天津 300381；4. 北京工业大学 建筑工程学院，北京 100124）
  • 收稿日期:2024-01-04 修回日期:2024-03-07 出版日期:2024-10-15 发布日期:2024-10-15
  • 作者简介:作者简介：项 凯(1980- )，男，辽宁瓦房店人，应急管理部天津消防研究所，副研究员，主要从事工程结构抗火研究，天津市南开区卫津南路110号，300381，xiangkai0304@163.com。
  • 基金资助:
    基金项目：国家消防救援局科技计划项目（2023XFCX17）；天津市科技计划项目（22JCZDJC00850）；基本科研业务费专项资金项目（2023SJ13）

Research on the remote over temperature alarm device of structural members under fire

Xiang Kai1,2,3, Pan Yanchong1,2,3, Diao Xiaoliang1,2,3, Song Tianyi4   

  1. (1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 30081, China; 2. Key Laboratory of Fire Protection Technology for Industry and Public Building,Ministry of Emergency Management, Tianjin 300381, China; 3. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China; 4. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China)
  • Received:2024-01-04 Revised:2024-03-07 Online:2024-10-15 Published:2024-10-15

摘要： 为实现建筑火灾中结构构件达到耐火极限时进行远程超温报警，利用不同合金材料高温熔化时熔点固定的特性，结合控制器局域网总线技术，研发了结构构件的临界温度远程超温报警装置，并开展了试验验证。采用有限元方法，分析了感温合金在H型钢柱构件上的布置方式。明确了标准升温曲线作用下，H型钢柱达到耐火极限时，柱表面的临界温度影响因素，提出了H型钢柱临界温度计算方法。研究结果表明：研发的报警装置可以实现结构构件达到耐火极限时的超温报警，试验验证了报警装置的有效性；感温合金宜布置在H型钢柱的中部2/3柱高范围内的钢构件表面任意位置；约束方式、荷载比、截面尺寸和长细比对H型钢柱构件表面临界温度的影响较大。

关键词: 控制器局域网, 温度, H型钢柱, 远程报警

Abstract: In order to achieve remote over temperature alarm when structural components reach their fire resistance limit in building fires, a critical temperature remote over temperature alarm device for structural components was developed using the characteristics of fixed melting point of different alloy materials at high temperatures, combined with controller area network bus technology, and experimental verification was carried out. The arrangement of temperature sensing alloys on H-shaped steel column components was analyzed using finite element method. The factors affecting the critical temperature on the surface of H-shaped steel columns when they reach their fire resistance limit under the influence of the standard heating curve have been clarified, and a calculation method for the critical temperature of H-shaped steel columns has been proposed. The research results indicate that the developed alarm device can achieve over temperature alarm when the structural components reach the fire resistance limit, and the effectiveness of the alarm device has been verified through experiments; Temperature sensing alloys should be arranged at any position on the surface of steel components within the middle 2/3 column height range of H-shaped steel columns; The constraint method, load ratio, section size, and aspect ratio have a significant impact on the critical surface temperature of H-shaped steel column components.

Key words: controller area network, temperature, H-shaped steel columns, remote alarm