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 ›› 2020, Vol. 39 ›› Issue (9): 1206-1210.

• • 上一篇    下一篇

钢管混凝土柱-组合梁单边螺栓连接框架耐火性能研究

项凯1，曲怡鸣2，潘雁翀1，宋天诣3   

  1. 1. 应急管理部天津消防研究所，天津300381；2. 北京市西城区消防救援支队，北京100009；3. 北京工业大学建筑工程学院，北京100124
  • 出版日期:2020-09-15 发布日期:2020-09-15
  • 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。
  • 基金资助:
    国家重点研发计划项目（2018YFC0807600）；国家自然科学基金项目（51778018）

Fire resistance of concrete-filled steel tubular column to composite beam frames with blind bolted connections

XIANG Kai1, QU Yi-ming2, PAN Yan-chong1, SONG Tian-yi3   

  1. 1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China；2. Xicheng Fire and Rescue Division（of Beijing）, Beijing 100009, China; 3. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
  • Online:2020-09-15 Published:2020-09-15

摘要： 为明确钢管混凝土柱-组合梁单边螺栓连接框架的耐火性能，采用有限元方法分析了ISO 834 标准升温曲线火灾作用下，圆形钢管混凝土柱-组合梁单边螺栓连接框架的温度场和耐火极限。研究结果表明：提出的简化的HB 螺栓模型可以有效地对圆形钢管混凝土-组合梁框架的耐火性能进行分析。钢管混凝土柱横截面混凝土的网格划分方法对于钢管混凝土柱-组合梁框架的耐火极限影响较小。当节点连接可靠时，钢管混凝土柱-组合梁框架达到耐火极限时的破坏模式主要有柱破坏模式和组合梁破坏模式。

关键词: 钢管混凝土柱, 组合梁, HB 螺栓, 耐火性能, 数值模拟

Abstract: In order to clarify fire performance of concrete filled steel tubular (CFST) column to composite beam frames with blind bolted connections, the finite element method was used to analyze the temperature field and fire resistance limit of circular CFST column to composite beam frames with blind bolted connections. The fire condition was ISO 834 standard heating curve. The research results show that the simplified blind bolted model could effectively analyze the fire resistance of circular CFST column to composite beam frame. The meshing method of CFST column cross section had little influence on the fire resistance limit of CFST column to composite beam frame. When the blind bolt connection was reliable, the failure modes of CFST column to composite beam frame reaching the fire resistance limit were mainly column failure mode and composite beam failure mode.

Key words: concrete filled steel tubular column, composite beam, blind bolt, fire performance, numerical simulation