YIELD DESIGN-BASED ANALYSIS OF HIGH RISE CONCRETE WALLS SUBJECTED TO FIRE LOADING CONDITIONS

摘要

Relying on a simplified illustrative model, a yield design-based approach is developed for analysing the stability of high rise walls (that are larger than the dimensions of experimental test furnaces) under fire conditions.The implementation of the method combines two original features: first,the preliminary determination of interaction diagrams reflecting the local decrease in strength of the wall due to thermal loading;second, the thermal-induced geometry changes which are explicitly accounted for in the overall failure design of the wall.Application of the approach is illustrated in either evaluating the fire resistance of a wall with a given height or predicting the maximum height that the wall could reach for a fire exposure time.