Experimental and Numerical Research on the Fire Behaviour of Steel Column Protected by Gypsum Plasterboard Under Fire Condition

摘要

In Vietnam, the fire problem in steel structures is relativity much, thus the study of fire protection solutions for the load-bearing steel structures (beams, columns) is very important. One of solution is the use of gypsum plasterboard. This paper presents firstly an experimental identification of the thermal conductivity of gypsum plasterboard used in Vietnam and then a full-scale experimental investigation relative to the fire resistance of steel column protected by gypsum plasterboard. In parallel, a numerical model is also developed in order to simulate the thermal transfer and mechanical behaviour of steel column protected by gypsum plasterboard under fire conditions. This model is used to compare with the experimental results and to analyse the influence of different parameters on the fire behaviour of steel column protected by gypsum plasterboard in Vietnam conditions.