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 ›› 2024, Vol. 43 ›› Issue (10): 1394-1400.

• • 上一篇    下一篇

外露式钢管混凝土柱连接节点的耐火性能研究

刘永利   

  1. (广州市海珠区住房和建设局,广东 广州 510000)
  • 收稿日期:2023-12-06 修回日期:2024-05-14 出版日期:2024-10-15 发布日期:2024-10-15
  • 作者简介:作者简介:刘永利(1984- ),男,河北廊坊人,广州市海珠区住房和建设局消防设计审查科科长,主要从事建设工程消防审查工作,广东省广州市海珠区新港中路472号,510000,lyl12345678912@163.com。

Research on fire resistance performance of joint node for external concrete-filled steel tubular columns

Liu Yongli   

  1. (Guangzhou Haizhu District Housing & Construction Bureau, Guangdong Guangzhou 510000, China)
  • Received:2023-12-06 Revised:2024-05-14 Online:2024-10-15 Published:2024-10-15

摘要: 超高层建筑靠外墙的钢管混凝土柱及其节点采用外露的布置方式时,现行规范对如何进行有效的防火保护没有明确的规定。本文以某超高层建筑位于室外的钢管混凝土柱连接节点为研究对象,通过FDS模拟计算,确定室外连接节点的最不利升温曲线;在此基础上计算节点的受力情况和耐火性能,提出室外连接节点的防火保护设计方案;最后对连接节点开展实体升温试验,节点的试验结果与理论计算结果非常接近,验证了防火保护方案的有效性。

关键词: 钢管混凝土柱, 室外连接节点, 防火保护, 升温曲线, 耐火试验

Abstract: The current codes have no clear provisions on how to carry out effective fire protection design for external concrete-filled steel tube columns and their joints located out of the external wall system for super high-rise buildings. In this paper, the joint of external concrete-filled steel tubular columns in a super high-rise building was studied. Based on FDS simulation, the most severe temperature curve for the external joint was determined, the mechanical performance and fire resistance rating of the joint were calculated, and the fire protection design of the external joint node was also proposed. Furthermore, fire resistance test was conducted to examine the temperature raise of the joint, and the test results align well with theoretical calculations. As a result, the effectiveness of the fire protection for the joint node was verified.

Key words: concrete-filled steel tube column, external joint, fire protection, time-temperature curve, fire resistance test