| Title |
A Study on Structural Efficiency of Hybrid Tube System considering Shear Lag and Lateral Drift Control |
| Keywords |
Shear Lag ; Lateral Drift ; Shear Lag Factor ; Hybrid Tube System ; Tall Building |
| Abstract |
In company with an appearance of tall buildings, many researches on the structural system of tall building have been presented and developed. Especially, framed tube system that extends the bending width from internal core to external periphery has been used for high-rise buildings. But, the disadvantage of framed tube system is that the flexible spandrel girders cause a shear lag, which increases the stresses in the corner columns and reduces those in the inner columns of both flange and web frames. Besides, the shear lag causes a shear deformation of structure and increases the lateral drift. Therefore, to relieve this phenomenon, tubular structure is usually combined with another structural system instead of being used singly. To present better hybrid systems which efficiently control the shear lag, this study analyzes the shear lag phenomenon of the hybrid tube systems which other structural systems are combined with the framed tube system, based on shear lag factor. Moreover, the structural efficiency of hybrid tube systems can be also estimated by analyzing the steel quantity that should be added in order to control the top lateral drift within the allowable lateral drift. |