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 ›› 2021, Vol. 40 ›› Issue (10): 1455-1461.

• • 上一篇    下一篇

震损钢筋混凝土平面框架结构抗火性能研究

陈全杰1,陈 伟1,刘 虹1,文 波2   

  1. 1.国网陕西省电力公司经济技术研究院,陕西 西安710065;2.西安建筑科技大学 土木工程学院,陕西 西安710055
  • 出版日期:2021-10-15 发布日期:2021-10-15
  • 作者简介:陈全杰(1985-),女,河南南阳人,国网陕西省电力公司经济技术研究院高级工程师,主要从事变电站规划设计方面的研究,陕西省西安市高新区科技六路15号汇金国际,710065。通信作者:文 波,女,西安建筑科技大学土木工程学院教授。
  • 基金资助:
    国家自然科学基金面上项目(52076066)

Study on fire resistance of earthquake damaged reinforced concrete plane frame structure

CHEN Quan-jie1, CHEN Wei1, LIU Hong1,WEN BO2   

  1. 1. State Grid Shaanxi Province Electric Power Company Economic and Technical Research Institute,Shaanxi Xi'an 710065, China; 2. School of Civil Engineering, Xi'an University of Architecture and Technology, Shaanxi Xi'an 710055, China
  • Online:2021-10-15 Published:2021-10-15

摘要: 为明确混凝土框架结构受地震破坏造成的几何损伤对其遭受地震次生火灾后耐火性能退化规律的影响,分析总结震害资料以及抗震实验记录,将混凝土保护层剥落、残余变形作为混凝土结构的震损形式,通过数据统计与回归分析的方法确定损伤尺寸,从而建立了两层两跨震损钢筋混凝土平面框架有限元模型,得到了框架结构变形特点和受火位置、轴压比、层间位移角对平面框架结构耐火极限的影响规律。

关键词: 地震次生火灾, 震损钢筋混凝土框架, 耐火极限

Abstract: In order to clarify the influence of geometric damage of concrete frame structure caused by earthquake on the degradation law of fire resistance after earthquake, the seismic damage data and seismic test records are analyzed and summarized. The spalling and residual deformation of concrete protective layer are taken as the seismic damage form of concrete structure, and the damage size is determined by data statistics and regression analysis. Thus, the finite element model of two-story and two span earthquake damaged reinforced concrete plane frame is established, and the deformation characteristics of frame structure and the effects of fire position, axial compression ratio and story displacement angle on the fire resistance of plane frame structure are obtained.

Key words: post earthquake fire, seismic damage of reinforced concrete frame, fire resistance time