The Temperarure Rise Behavior Of Box Section Steel Beam With Floor Or Wall Is Analyzed By Using Finite Software Ansys

The steel structure construction in domestic are getting more and more Because its own weight is light,the earthquake resistance performance is good,merits and so on green environmental protection,specially in the few years,many large-scale steel structure construction’s completion has provided the very good project experience for the steel structure development.But compared to the good momentum of development of the domestic steel structure,steel structure fire research is still relatively certain backward.In this paper,the temperature rise behavior of box section steel beam with floor or wall is analyzed by using finite element software ANSYS.Calculated the box steel beam cross-section temperature field with the protection of the fire retardant paint under the curve in the standard temperature. On the basis of large number of calculations,has studied the protector thickness,the concretes type,the fire hazard position,the section characteristic and so on to the section high and low flange temperature difference and the section average temperature influence.This article research results can provide certain data support and the reference for the fire-resistant research.