| Title |
Drift Design Method for Frame-shear Wall Interaction Systems of High-rise Buildings using Material Properties as Design Variables |
| Authors |
Seo Ji-Hyun ; Park Hyo-Seon |
| Keywords |
Resizing Technique ; Drift Design ; High-rise Buildings ; Structural Optimization ; Design Variables ; Shear Walls |
| Abstract |
Frame-shear wall interaction system is one of the most popular structural system for high-rise buildings. In design of the structural system based on structural optimization techniques, the size of structural members such as cross-sectional areas and the moment inertia of the cross section are usually used as design variables. Recently, especially for high-rise housings, the shear wall in the frame-shear wall interaction system for high-rise buildings has been constructed without changing the thickness of the wall along the height of the building. In other words, due to various architectural requirements on the wall, thicknesses of the wall along the height is not determined according to the axial stresses of the wall. Insead of the thickness of the wall, the design strength of the reinforced concrete for the wall is usually changed along the height of the building. However, there is no practical or reasonable guidelines for proper selection of design strength of the reinforce concrete along the height of the wall. In this study, drift design methods using the cross-sectional areas and material properties of RC shear wall as design variables is proposed. Four drift design alternatives with respect to the design variables are formulated and applied to the drift design of 24 story frame-shear wall interaction systems. For the practicality, another two drift design alternatives considering design variable linking strategy are used to the drift design of 20 story frame-shear wall interaction systems. As results, the proposed drift design method using the cross-sectional areas and material properties of RC-shear wall as design variables is applicable to the drift design of frame-RC shear wall systems effectively. |