Fire Resistance Evaluation of SLIM AU Composite Beam

Abstract

SLIM AU(A plus U-shaped) composite beam was developed for reducing the story height in the residential buildings, and saving the cosrtuction cost of floor structures. Structural performance and economic feasibility of the composite beam have been sufficiently approved through the structural experiments and the analytical studies. However, the verification for fire safety is necessary for the practical application of the composite beam. The fire resistance tests with and without loading were performed for the fire safety verification, and the test results were summarized in this paper.

Experimental Study on the Flexural Capacity of H-shaped Steel Composite Beam with the Concrete-Filled Tubular Flange

“…8과 같이 하중-변위 곡선의 초기 기울기 접선인 선분 (a)와 이것의 1/3 기울기를 갖는 선분인 선분(b)를 평행 이동 하여 하중-변위 곡선과의 접선을 이루는 선분(c)와의 교점을 항복하중(P y ), 항복변위(  )로 산정하였다. 실험체의 초기강 성(K i )는 최대강도(P max )의 10%점과 50%점을 연결한 선분 의 기울기로 산정하였다 (Kim, 2017;Oh, 2016). (Oh, 2018).…”