COMPOSITE BEAM COMPOSED OF STEEL AND PRECAST CONCRETE (MODULARIZED HYBRID SYSTEM). PART III: APPLICATION FOR A 19-STOREY BUILDING

摘要

The authors present an experimental and analytical investigation of the modularized hybrid system (MHS) that utilizes the composite structure described in previous studies, that of a wide steel flange and precast concrete. The objective of this paper was to introduce the application of the MHS structural system to a high-rise building in which one additional floor was added while the overall building height was maintained. The 68-m-tall, 18-storey steel building was redesigned to a 19-storey building using the composite beams, which combine the merits of ductile steel and concrete components to withstand external loading while reducing floor height. The bottom flange of the steel beam is reinforced with concrete at a manufacturing plant, eliminating the use of temporary pour forms. The erection process of the composite beams is identical to that of traditional steel construction. This paper also describes more than 30 potential applications of high-rise composite construction using the MHS frames. The advantages of the MHS are presented in terms of reduced structural steel tonnage and shortened construction schedules.