Title of article :
Extreme Wind Effects on Roof Structures of Low Rise Buildings
Author/Authors :
baha, nuur zuleikha universiti kebangsaan malaysia - structures, materials and construction management research group, department of civil structural engineering, Bangi, Malaysia , osman, siti aminah universiti kebangsaan malaysia - structures, materials and construction management research group, department of civil structural engineering, Bangi, Malaysia
Abstract :
Roof structure should be properly designed to withstand any applied loads and stress. The distribution of the load on the roof system can be divided into three types which are dead load (roof structure), live load and wind load (stress due to dynamic interference). Wind load is the main stress experienced by the roof. The stability of the roof depends on its support such as roof frame, pillars, walls, beams and foundations. The aim of this study is to determine the maximum pressure distribution on the roof when been subjected to high wind load caused by extreme wind speed through computer simulation. This maximum pressure might cause failure in the roof structure. In this study, a series of parametric studies were carried out which include different type of roof shape, different angle of roof pitch and different angle of wind attack. Through simulation results, it was found that the hip and gable roof type has experienced the biggest failure for wind in direction of 0°. Besides that, it is evident from the results that the hip roof type with an angle of 10° is more practical and has less damage. From these simulation results, the most critical areas with high pressure distribution can be identified.
Keywords :
Extreme wind , pressure distribution , computer simulation , roof structure , turbulent flow k , ε
