高温(火灾)条件轴心受压变截面钢构件承载力理论研究  

THEORETICAL BEARING CAPACITY RESEARCH OF AXIAL COMPRESSING VARIABLE CROSS-SECTION STEEL MEMBER UNDER ELEVATED TEMPERATURE

作　　者：谭巍[1] 王肇民[1] 

机构地区：[1]同济大学,上海200092

出　　处：《钢结构》1999年第1期10-13,共4页Steel Construction

摘　　要：根据以往的试验与理论研究，导出了高温（火灾）条件下具有防火被覆的钢构件内部升温的计算公式，介绍了钢材在高温（火灾）条件下的力学性能变化，并给出了求得高温（火灾）条件下轴心受压变截面钢构件极限承载力以及钢构件临界温度的计算方法和简便、实用的高温（火灾）条仟下验算变截面轴压锅构件稳定承载力的计算公式．On the basis of previous test and theory research, the formula of calculating the temperature in thesteel member with fire protected material under elevated temperature is derived in this paper, and the mechanicproperty change of steel material under elevated temperature is also introduced. Furthermore, the method of calculating variable cross-section steel member under high temperature are given together in this paper.

关 键 词：高温 变截面轴心压杆 钢构件 承载力 理论研究 

分 类 号：TU391.02[建筑科学—结构工程]