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 ›› 2021, Vol. 40 ›› Issue (2): 180-183.

• • 上一篇    下一篇

胶合木结构受火响应规律研究

陈方1，钟波2   

  1. 1. 应急管理部消防救援局，北京100054；2. 应急管理部四川消防研究所，四川成都610036
  • 出版日期:2021-02-15 发布日期:2021-02-15
  • 作者简介:陈方（1981-），男，河南驻马店人，应急管理部消防救援局高级工程师，主要从事消防科研管理与研究工作,北京市西城区广安门南街70 号，100054
  • 基金资助:
    应急管理部消防救援局重点攻关项目（2019XFGG10）

Research on structural fire response of glulam structures

CHEN Fang1, ZHONG Bo2   

  1. 1. Fire and Rescue Department of MEM, Beijing 100054, China; 2. Sichuan Fire Science and Technology Research Institute of MEM, Sichuan Chengdu 610036, China
  • Online:2021-02-15 Published:2021-02-15

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摘要： 采用剩余截面法计算分析了典型截面胶合木构件的耐火性能，并对平面尺寸7.2 m×7.0 m、高度4.5 m 的胶合木结构进行了实体火灾试验。结果表明，胶合木构件耐火性能受荷载比和升温曲线影响较大，在90%荷载比时，截面尺寸200 mm×400mm 的胶合木梁耐火极限约为50 min。ISO 834 标准升温曲线与大空间升温曲线下作用75 min，截面尺寸220 mm×280 mm 的构件截面炭化深度分别约40 mm 和30 mm。无外部火源时，胶合木结构难于延燃，火蔓延范围有限。从胶合木截面炭化深度计算、构件耐火极限计算到胶合木结构实体火灾试验得到的结果，可为工程中胶合木结构抗火性能分析提供参考。

关键词: 胶合木结构, 炭化深度, 耐火性能, 火灾试验

Abstract:

The fire resistance performance of typical section glulam components was calculated by the residual section method, and a physical fire test was carried out on a glulam structure with plane size of 7.2 m×7.0 m and height of 4.5 m. The results showed that the fire resistance of the glulam components is greatly affected by the load ratio and the heating curve. At 90% load ratio, the fire resistance of a glulam beam with a crosssection size of 200 mm×400 mm is about 50 min. Under the ISO 834 standard heating curve and the large space heating curve for 75 minutes, the carbonization depth of the component section with a cross section size of 220 mm×280 mm is about 40 mm and 30 mm respectively. Without external fire source, the glulam structure is difficult to burn, and the fire spread range is limited. The results obtained from the calculation of the carbonization depth of the glulam cross section, the calculation of the fire resistance limit of the components, and the physical fire test of the glulam structure provide a reference for the analysis of the fire resistance performance of the glulam structure in the project. 

Key words: glulam structure, carbonization depth, fire resistance, fire test