外伸端板节点抗火设计方法  

A method for fire-resistance design of extended end-plate joints

作　　者：王卫永[1] 董毓利[2] 李国强[3,4] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]哈尔滨工业大学土木工程学院,哈尔滨150001 [3]同济大学土木工程学院,上海200092 [4]同济大学土木工程防灾国家实验室,上海200092

出　　处：《哈尔滨工业大学学报》2008年第10期1625-1628,共4页Journal of Harbin Institute of Technology

基　　金：国家重点基础发展规划项目(2001CB09603);国家自然科学基金委国际合作重大项目(50320120156);国家自然科学基金资助(50738005);国家自然科学基金创新研究群体资助项目(50621062);重庆大学人才引进资金资助项目

摘　　要：为外伸端板节点的抗火设计提供参考,提出了一个外伸端板节点抗火设计方法.结合我国现行的GB50017-2003《钢结构设计规范》和CECS200:2006《建筑钢结构防火技术规范》,考虑结构钢高温下的力学性能,对常温下外伸端板节点的承载力进行分析和改进.提出了高温下高强螺栓,外伸端板,柱翼缘和节点板域抗火承载力计算公式.通过计算两个外伸端板节点的临界温度和耐火极限与试验结果对比,验证了方法的可靠性.In order to provide reference for fire-resistance design of joints, a method is presented to design the extended end -plate joints in fire. According to the current Chinese Codes for Design of Steel Structures and Technical Code on Fire Safety of Steel Building Structures, analyses were made on the load - bearing capacity of extended end - plate joint in fire, by taking the mechanical properties of steel at elevated temperature into consideration. A calculation formula is proposed for fire-resistance design of high strength bolt, extended end- plate, flange of column and panel zone at elevated temperatures. By employing the practical approach, the critical temperature and fire resistance of two extended end-plate joints were predicted. The reliability of this method was verified by comparing with the results measured from the tests.

关 键 词：外伸端板 节点 抗火 翼缘 节点域 

分 类 号：TU392[建筑科学—结构工程]