- 摘 要
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(1 西安建筑科技大学土木工程学院, 西安 710055; 2 宝钢建筑系统集成有限公司, 上海 200050)
[摘要]对1根足尺包覆加气片材的Ⅰ字形型钢梁进行标准火灾试验研究,得出可将构件的三维热传导问题简化为二维热传导问题。采用ANSYS软件对试验模型和简化模型进行升温模拟,对比两种模型中钢梁的升温情况,得出简化模型能代替试验模型。采用简化模型分析不同保护层厚度下钢梁的升温情况,并用MATLAB软件拟合出标准火灾条件下实心包覆Ⅰ字形型钢梁的升温计算公式。
[关键词]标准火灾试验; 二维热传导; 有限元; 保护层厚度
中图分类号:TU391 文献标识码:A 文章编号:1002-848X(2014)09-0053-04
Temperature analysis for solid coated Ⅰ-shaped steel beam
Chen Xiangrong1, Zhu Min1, Wu Jianhua2
(1 School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; 2 Baosteel Construction System Intergration Co., Ltd., Shanghai 200050, China)
Abstract: Standard fire resistant experiment on a full scale fire insulation coated Ⅰ-shaped steel beam was carried out and studied. Results show that the three-dimensional heat conduction problem can be simplified to two-dimensional heat conduction problem. ANSYS software was used to carry out temperature simulation on the steel beams of test model and simplified model. Comparisons were made between test model results and simplified model results. It is shown that two models are equal. Temperature simulation of steel beams with different concrete cover thickness is carried out using simplified model. MATLAB software was used to fit the temperature calculation formula for the solid coated Ⅰ-shaped steel beam under the standard fire condition.
Keywords: sandard fire resistant experiment; two-dimensional heat conduction; finite element; thickness of concrete cover
作者简介:陈向荣,博士,副教授,Email:cxr90@126.com。
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