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An Experiment on a Real Building with Truss Roof to Validate Real-Time Early-Warning System for Fire-Induced Collapse.

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Title: An Experiment on a Real Building with Truss Roof to Validate Real-Time Early-Warning System for Fire-Induced Collapse.
Authors: Li, Guo-Qiang1,2 (AUTHOR), Li, Jinyu1 (AUTHOR), Zhu, Shaojun1 (AUTHOR) zhushaojun@tongji.edu.cn, Zhang, Chao3 (AUTHOR), Chen, Bin4 (AUTHOR), Ji, Wei1 (AUTHOR), Wang, Yao1 (AUTHOR), Chen, Nan4 (AUTHOR), Qi, Honghui1 (AUTHOR), Yang, Xiaolin5 (AUTHOR), Jiang, Liming6 (AUTHOR), Nie, Yongfeng7 (AUTHOR), Luo, Qi8 (AUTHOR)
Source: Fire Technology. Jul2025, Vol. 61 Issue 4, p2013-2046. 34p.
Subjects: Building failures, Civil engineering, Temperature distribution, Reinforced concrete, Civil engineers
Abstract: To reduce secondary casualties and support firefighters in making scientific decisions in rescue, a real-time early-warning system for fire-induced building collapse, with "real-time measurement, online data analysis, and real-time early warning" being its core, has been developed. To validate the effectiveness of the system, a fire-induced collapse test on a real building with a truss roof was conducted. The basic framework of the early-warning system is firstly reviewed. The test program is then introduced, including basic information about the test structure, loading scheme, measuring points, and equipment. The detailed test phenomena, and the thermal and structural responses are further described and analyzed. The test results revealed that the temperature distribution within the tested building is highly non-uniform, and the maximum temperature of the gas and steel components reached 900°C. The collapse mode of the truss was successfully identified by the early-warning algorithm based on the evolution laws of the displacements at the key joints of the truss, including prominent vertical joint displacements, buckling of the steel member of the truss, and bending failure of the top reinforced concrete chord of the truss. The test building collapsed after 4253 s after the ignition of the fire, and the developed early-warning system issued the remaining time to collapse in real time before the collapse of the test building. It is demonstrated that the predicted remaining time to collapse by the early-warning system was close to the real value. [ABSTRACT FROM AUTHOR]
Copyright of Fire Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: An Experiment on a Real Building with Truss Roof to Validate Real-Time Early-Warning System for Fire-Induced Collapse.
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  Data: To reduce secondary casualties and support firefighters in making scientific decisions in rescue, a real-time early-warning system for fire-induced building collapse, with "real-time measurement, online data analysis, and real-time early warning" being its core, has been developed. To validate the effectiveness of the system, a fire-induced collapse test on a real building with a truss roof was conducted. The basic framework of the early-warning system is firstly reviewed. The test program is then introduced, including basic information about the test structure, loading scheme, measuring points, and equipment. The detailed test phenomena, and the thermal and structural responses are further described and analyzed. The test results revealed that the temperature distribution within the tested building is highly non-uniform, and the maximum temperature of the gas and steel components reached 900°C. The collapse mode of the truss was successfully identified by the early-warning algorithm based on the evolution laws of the displacements at the key joints of the truss, including prominent vertical joint displacements, buckling of the steel member of the truss, and bending failure of the top reinforced concrete chord of the truss. The test building collapsed after 4253 s after the ignition of the fire, and the developed early-warning system issued the remaining time to collapse in real time before the collapse of the test building. It is demonstrated that the predicted remaining time to collapse by the early-warning system was close to the real value. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Fire Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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