Reliability Analysis Before and After Strengthening the Existing Structure due to addition of Steel Structure on the Building’s Roof

Abstract

The proposed research is a reliability analysis of reinforced concrete beams and roof slab structures of a 6-story reinforced concrete building, Faculty of Architecture and Planning, Thammasat University, Rangsit Center, before and after strengthening design using CFRP method, steel plate, and ferrocement, so that the slab and beam structures can support the additional steel structures used for co-research laboratories and classrooms. Before and after the strengthening, the analysis was utilized to calculate the bending moment and shear of the beam structure and the roof slab. Considering how dissimilar they are after that, the structural reliability index was calculated and compared to the reliability index target. The reliability index after strengthening is higher than the reliability index before strengthening.