The Research Of The Fire Resistance Design For Steel Beam In Steel Structure Domicile In The Condition Of Indocr Part Fire

Ours government forbid to use solid bricks form Uuly,2003.The steel structure become the first and the foremost structural system for the large number of domicile architecture because the architectural velocity of the steel structure is quick, its aseismatic function is good, its architectural facade is beautiful and levitly. At the same time its application foreground mast will be very extensive along with the output of the steel became more and more bigger. But the biggest limitation of the steel structure is its fire resistance function is bad. So the advance and apply of a kind of scientific, economical and reliable fire resistance design method became the biggest precondition for the apply of the steel structure domicile.Chinese current code for fire resistance adopts the method of adjustment by experiment. The biggest problem is the same limit in despite of the specific case of the fire room. The output of this method is no economical or is no safe at other time. The method can't operate easily and its credibility is bad.This paper firstly reformed a large number of parameters based on the search in a large number of documents. It provides strong basement for the research of design. The method of structure analysis commended by this paper is based on nonlinear finite-element, diathermanous and elasticity mechanics. It found the model of a steel beam pressed by gravity and temperature in the condition of indoor fire. It calculates the sanction of the beam in the frame and brings to bear on the frame, so it is real and the outcome is the most contiguous to the reality.In order to enhance the practicability of the research of design the author also designed a practically program in VB based on the ANSYS.This paper compared the outcome calculated by the method of structure analysis and the method commended by other paper. It also shows the superiority of the method commended by the author through the analysis of the gap between the two methods. The compare of the calculate outcome shows the huge economical effect of this method. The compare of the analysis outcome and actual fire experiment also proves the calculative precision of the method of structure analysis commended by this paper...