A Shear Wall Structure is ordinary adopted apartment system in Korea. But, this system restrect the flexibility of indoor space and it is impossible to the use of parking lots in the basement. In this study, We proposed a new structural model for the ...
A Shear Wall Structure is ordinary adopted apartment system in Korea. But, this system restrect the flexibility of indoor space and it is impossible to the use of parking lots in the basement. In this study, We proposed a new structural model for the unhanced flexibility of a indoor space and for a use of parking lot in it's basement. The proposed models are a Semi Rahmen, a Flat Plate 1, a Flat Plate 2 and a Complex Structure(basement Rahmen, upper story shear wall). A Semi-Rahmen is consist of dual structure for longitudinal direction, shear wall structure for short direction and + types beams are adopted in slab. A New Earthquake Resistance Design Code in Korea were enforcement, this system expected to the effective earthquake-proof model. A Flat Plate 1, 2's frame system is equal to a Semi-Rahmen, but for the purpose of story heigth reduction and for the enhanced flexibility of a indoor space, Flat Plate and Prestressed Flat Plate were adopted in the slabs. A Complex Structure is consist of rahmen and shear wall. For the use of parking lots, Rahmen was adopted in the basement. Shear wall and Rahmen are connected Transfer Girder(b?, 700?600mm). In a Semi-Rahmen and a Flat Plate 1, for the unhanced flexibility of indoor space, columns that located in the center of household are restrected in 550?50mm. A high axial forces(about 680t) in basement worked to this column. Because a Center Column size restricted 550?50mm, ordinary reinforced concrete column are not adopted. Therefore we proposed the Composite Column or Half PC Column using high strength concrete(f'c=400, 500kg/cm2) in a center column. The total construction cost in these models were almost equal to a KNHC's already estabilished model(59BN-80-20F). But, This column were adopted, construction management of the yards would difficult and between columns joint details would complicate. A Flat Plate 2 adopted post-tension in slab for the ultimate flexibility of a indoor space. In the prestressed slab, the quantity of deformed bars are much less than Ordinary Reinforced Concrete Slab, but the cost for prestressing and other related costs in slab are very expensive, therefore the total construction cost will be increased. In a Semi-Rahmen, a Flat Plate 1, a Flat Plate 2, the flexibility of indoor space planning are superior to a KNHC's already estabilished model (59BN-80-20F). In a Semi-Rahmen, Flat Plate 1 and Complex structure, four cars can parked for a unit household, and In a Flat Plate 2, six cars can parked for a unit household. So, On the proposed model, The usefullness of parking lots in the basement is very superior to a KNHC's already estabilished model(59BN-80-20F). Consequently, Comparision the application of KNHC's apartment design and the usefuliness of parking lots in the basement to the proposed models. A Complex Structure is appropriate model rather than the other proposed models.