油气火灾下椭圆形钢柱性能的试验研究

椭圆形空心钢构件是一种有效的钢构件。尽管其外形和结构效率均有很大吸引力,但还没有相关的耐火规范,这限制其在工程中的应用。故首次研究了椭圆形空心构件钢柱的耐火性能。在油气火灾下,对6根柱子进行试验,参数包括:3种荷载作用(αL=0.3,0.45,0.6)及2种长细比(λ=40.1,50.8)。给出了椭圆形空心钢柱的轴向位移和温度数据,并着重说明了椭圆形空心构件独特的局部及整体屈曲破坏模型。

Experimental Study on Performance of Elliptical Section Steel Columns Under Hydrocarbon Fire

Elliptical structural steel hollow sections represent a recent addition to the range of steel sections available to structural engineers.However,despite the extensive interest in their use on the basis of both architectural attraction and structural efficiency,a complete absence of fire resistance design guidance is restraining applications.This paper presents the first study ever conducted to investigate the fire resistance of steel columns with Elliptical Hollow Sections(EHS).Six columns of two slendernes...