NUMERICAL MODEL FOR ANALYSIS OF TEMPERATURE FIELD IN FIRE EXPOSED H-SECTION STEEL COLUMNS WITH BOX PROTECTION

摘要：

In this paper,a nonlinear finite element analysis model is presented for the calculation of the temperature history of H-section steel columns protected with box-casing insulation under fire conditions. The heat transfer in cavities between the steel column surfaces and fire proof boards both by radiation among the interior surfaces and by conduction through air is calculated. The model is focused on simulating heat exchanges by radiation in the cavities. Firstly,the radiative heat flow system of equations is derived and expressed in matrix form,and then nodal radiative thermal loads are calculated from radiative heat flows at segments,i.e.,edges of elements located on internal cavities. Temperature evolution in H-section steel columns protected with box-casing insulation under fire conditions are calculated using TFIELD written by first author. The simulation outcomes show good agreement with the experimental results.

关键词： Fire Protected steel column Heat transfer Cavity radiation

作者: Yong-Jun Liu Yan-Sheng Song

作者单位: School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,P. R. China Department of Ci School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,P. R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 2252-2256

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）