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

Fire Science and Technology ›› 2020, Vol. 39 ›› Issue (12): 1668-1671.

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Discussion on early warning means of building structure collapse under fire and application of Interferometric Radar

YIN Liang1,2,3,KAN Qiang1,FAN Feng2,3, YE Ji-hong4   

  1. 1. Tianjin Fire Science and Technology Research Instituteof MEM,Tianjin 300381,China;2. Key Laboratory of StructuresDynamic Behavior and Control of MOE,Harbin Instituteof Technology,Heilongjiang Harbin 150090,China;3. KeyLaboratory of Smart Prevention and Mitigation of Civil EngineeringDisasters of MIIT,Harbin Institute of Technology,HeilongjiangHarbin 150090,China;4. State Key Laboratory ForGeomechanics and Deep Underground Engineering,China Universityof Mining and Technology,Jiangsu Xuzhou 221116,China

  • Online:2020-12-15 Published:2020-12-15

Abstract:

The research on the early warning means of collapseof building structure in fire accidents is an urgent need for currentbuilding fire extinguishing and rescue.The author combedand analyzed the characteristics of the proposed collapse warning means, pointed out their advantages and disadvantages,emphaticallyaddressed the application of Interferometric Radar,and tested the performance of radar waves penetrating localizedfire plumes in large space.The results indicate that: the currentearly warning means are mainly focused on "single point detection",and the application in some typical building fires is limited;the interference radar wave is basically not influenced by theflame of oil pan, and the total error of device is in the submillimeterlevel, but attention should be paid to distinguish the deformationcaused by some non- structural elements.It is suggestedthat the method of obtaining the spatial coordinates of key memberthrough the combined use of multiple radars should be improved,and the early warning device and algorithm based on regionaldetection should be built, and the deformation monitoringmeans for the whole life cycle of important buildings should be developed.

Key words:  fire protection, building fire, collapse warning, radarsystem, deformation monitoring