涂层厚度对简支钢梁耐火时间的影响  

EFFECT OF COATING THICKNESS ON FIRE RESISTANCE PERIOD OF A SIMPLE SUPPORTED BEAM

作　　者：杜明淮 王道善[1] 林洋[1] 

机构地区：[1]合肥工业大学土木与水利工程学院工程力学系,合肥230009

出　　处：《低温建筑技术》2013年第7期61-63,共3页Low Temperature Architecture Technology

摘　　要：基于ISO标准火灾曲线下,利用ANSYS软件,采用逐渐递增涂层厚度的方式研究在超薄涂型、薄涂型及厚涂型防火涂料的涂覆下,涂层厚度对简支钢梁耐火时间的影响。结果发现:随着涂层厚度的增加,钢梁的耐火时间基本上是先增加后趋平缓,且涂层厚度在1.5mm与3mm之间的超薄涂型、涂层厚度在4mm与6mm之间的薄涂型及涂层厚度在13mm与17mm之间的厚涂型的防火涂料之间存在着一定的等效替代关系。Based on the standard fire temperature rise curve in the room of ISO, gradually increase the coating thickness to analyze the effect of different coating thickness on fire resistance performance with the uhrathin, thin and thick coating type. The research result shows that the fire resistance period of steel beam firstly increases with the increase of coating thickness and then the growth rate stays gentle, It is discovered that certain equivalent substitute relations exist in ultrathin coating type whose coating thickness is between 1.5mm and 3mm,thin coating type whose coating thickness is between 4mm and 6mm and thick coating type whose coating thickness is between 13mm and 17mm.

关 键 词：简支钢梁 涂层厚度 耐火时间 

分 类 号：TU391[建筑科学—结构工程]