Xác định khả năng chịu lực của khung thép tiền chế một tầng trong điều kiện chịu lửa theo phương pháp lý thuyết và mô phỏng số

Pre-engineered steel frames are used popularly in industrial buildings due to their good load-bearing ca-pacity and flexibility in assembly. For single-storey steel frames, the basic components are I–section beams (raftes) and columns. At elevated temperature (in fire), the load-bearing capacity of these compo-nents increases markedly when they are protected by fireproof materials. There are many methods to ana-lyze the behavior of them in fire. A simplified calcula-tion in accordance with EN 1993-1-2 and simulation using IDEA StatiCa program to determine fire re-sistance of beams and columns in single-storey pre-engineered steel frames are presented in the paper. Examples are implemented for different protection solutions to compare obtained values of time and temperatures from two these methods.