Finite Element Analysis on Fire Resistance Performance of Reinforced Concrete Columns after Earthquake

Meng LIU; Wenwen YIN; Shengguang YIN; Kai WEN; Yingchao LIU

doi:10.13409/j.cnki.jdpme.20211204002

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Finite Element Analysis on Fire Resistance Performance of Reinforced Concrete Columns after Earthquake

更新时间：2025-09-25

- Finite Element Analysis on Fire Resistance Performance of Reinforced Concrete Columns after Earthquake
- Journal of Disaster Prevention and Mitigation Engineering Vol. 42, Issue 2, Pages: 303-309(2022)
- 作者机构：
  
  1.辽宁工业大学土木建筑工程学院，辽宁锦州 121001
  2.中交路桥建设有限公司，北京 100024
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.20211204002
  CLC： TU375.3
- Published：28 April 2022
- 稿件说明：
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刘猛,尹文雯,殷胜光等.震后钢筋混凝土柱耐火性能有限元分析[J].防灾减灾工程学报,2022,42(02):303-309.

LIU Meng,YIN Wenwen,YIN Shengguang,et al.Finite Element Analysis on Fire Resistance Performance of Reinforced Concrete Columns after Earthquake[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(02):303-309.
刘猛,尹文雯,殷胜光等.震后钢筋混凝土柱耐火性能有限元分析[J].防灾减灾工程学报,2022,42(02):303-309. DOI： 10.13409/j.cnki.jdpme.20211204002.

LIU Meng,YIN Wenwen,YIN Shengguang,et al.Finite Element Analysis on Fire Resistance Performance of Reinforced Concrete Columns after Earthquake[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(02):303-309. DOI： 10.13409/j.cnki.jdpme.20211204002.

摘要

地震次生火灾（post‑earthquake fire）是震后间接引发的一种具有严重危害性的次生灾害，不仅造成远大于普通火灾的损失，亦会导致原本结构性能的改变，从而威胁到人们的生命财产安全。为研究钢筋混凝土柱震损后的耐火性能，选取了合理的损伤指数，采用有限元分析软件ABAQUS建立震损钢筋混凝土柱耐火极限模型，并对有限元分析模型与参数进行了验证。在此基础上分析了损伤程度、荷载比等参数对震损柱耐火性能的影响。结果表明：随着损伤程度和荷载比的增加，震损钢筋混凝土柱的耐火极限减小，且二者对震损柱的耐火极限影响较大；当损伤指数为0.672时，与无损伤柱相比，耐火极限下降了41%；当荷载比为0.6时，轻微破坏的受损柱（即损伤指数为0.132）耐火极限相较荷载比为0.15时下降了48%。

Abstract

Post-earthquake fire is a serious secondary disaster caused indirectly by earthquakes. It not only causes much greater losses than ordinary fires， but also changes the original structure performance， thereby threatening people's lives and property. In order to study the fire resistance performance of reinforced concrete columns after seismic damage， a reasonable damage index was selected and the finite element analysis software ABAQUS was used in this research to establish a fire resistance limit model of the seismically damaged reinforced concrete columns. The finite element analysis model and parameters were verified. On this basis， the effects of parameters such as damage degree and load ratio on the fire resistance of the seismically damaged columns were analyzed. The results show that the fire resistance limit of earthquake-damaged reinforced concrete columns decreases with the increase of damage degree and load ratio. Meanwhile， the damage degree and load ratio have a relatively great impact on the fire resistance limit of reinforced concrete columns damaged by earthquakes. When the damage index is 0.672， compared with the undamaged column， the fire resistance reduces 41%； when the load ratio is 0.6， the fire resistance of the slightly damaged column （the damage index is 0.132） decreases 48% compared with the load ratio of 0.15.

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references

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