现代木结构抗火研究进展  

Research progress on fire resistance of modern timber structures

作　　者：刘鹏飞 张永旺 王璐[2] LIU Pengfei;ZHANG Yongwang;WANG Lu(Institute of Civil and Architectural Engineering,Tongling University,Tongling 244061,China;College of Civil Engineering,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]铜陵学院建筑工程学院,安徽铜陵244061 [2]南京工业大学土木工程学院,江苏南京211800

出　　处：《南京工业大学学报（自然科学版）》2024年第4期407-425,463,共20页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金面上项目(52378518);中国博士后科学基金(2023M731650)。

摘　　要：现代木结构抗火性能研究因其材质的易燃性、火灾预测的复杂性以及影响因素的多样性而极具挑战性。本文以火灾作用下木材热性能为出发点,再到构件和节点分析,进而扩展到结构,对整个现代木结构抗火所涉及的相关研究成果进行较为全面的回顾。主要内容包括:木材着火、热解以及炭化,木构件和节点抗火,木结构抗火。已有研究结果表明:对于火灾作用下木材燃烧机制、构件抗火性能、节点连接性能以及结构火灾性能方面已有较为清晰的认识,也开发了木材着火、热解及炭化预测模型,明确了结构设计与消防安全的基本概念。为满足现代木结构整体火灾安全设计需求,应致力于发展精确的火灾模型、先进的热模型及结构模型,重点关注自然火灾下建筑全过程结构行为;未来尚应在研究内容上聚焦高大型空间木结构火灾温度效应与结构整体受火性能,在研究方法上以性能化火灾安全设计为目标,从而推动现代木结构向高层、大空间及大跨度方向发展。The research on the fire resistance of modern timber structures is extremely challenging due to wood s combustibility,complexity of fire prediction,and diverse influencing factors.This paper provides a comprehensive review of research progress on fire resistance of modern timber structures,spanning from the thermal behavior of wood during fires to member and joint analyses,and onward to structural considerations.The main contents include ignition,pyrolysis,and charring of timber,fire resistance of timber members and joints,and overall structural fire performance.Existing research indicates a clearer understanding of the wood combustion mechanisms,component fire resistance,joint connectivity,and structural fire performance.In addition,prediction models for ignition,pyrolysis,and char formation have also been developed,establishing fundamental links between structural design and fire safety.In order to meet the overall fire safety design standards for modern timber structures,accurate fire models,advanced thermal models,and structural models should be developed.Emphasizing the study of structural behavior across the entire fire duration under natural conditions is crucial.Future research should prioritize exploring temperature effects on tall,large-span timber structures and their overall fire performance.Methodologically,research should advance towards performance-based fire safety designs,thereby fostering the evolution of modern timber structures towards taller buildings,larger spaces and wider spans.

关 键 词：现代木结构 木材热性能 结构构件 连接节点 抗火性能 火灾模型 

分 类 号：TU366.2[建筑科学—结构工程]