Numerical Analysis of Weld Joint of Frame Column Structure in Fire
DING Lin
HUANG Dao-ye
JIANG Hong-yun
Abstract： A model of frame column structure exposed to fire which temperature curve is in agreement with ISO834 international standards of temperature curves is set up with ANSYS finite element software, and considering the influence of material thermal physical parameters on the thermal response of frame column structure, and the temperature and distribution stress are analyzed. The results showed that frame column joint weld temperature curve of different points of frame column weld are almost accordant. Temperature is quickly increased in the beginning, and increase speed is slowed in the ending stage, these are accord with three phases fire development. Temperature is increased to 600 ℃ in the middle of abdomen weld, when the fire goes on 8.5 s. The equivalent stress curve is parabola, and the peak stress is nearly 170 MPa. Equivalent stress and mechanical properties are synthetic analyzed, reasonable welding speed are obtained to 4mm/s, and comprehensive mechanical properties synchronously are gained in the weld joints of frame column structure. These results provide reference and guide for fire building safety and welding production structure.
Keywords：ANSYSfireframe column structureequivalent stress
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 5-7,11 )