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Forces and Displacements of Highrise Braced Frames with Facade Riggers  

Yuk, Min-Hye (전주대학교 대학원 건축공학과)
Jung, Dong-Jo (전주대학교 공학부)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.18, no.2, 2005 , pp. 181-190 More about this Journal
Abstract
In the conventional outrigger system, the outriggers are located in the planes of the core walls and this system has disadvantage of obstructing flexibility in the interior layout. But thc facade riggers in the structure uc located In the exterior frames in the direction of the lateral loading. The interaction between the traced frames and facade riggers is through the floor diaphragms adjacent to the chords of the riggers. This paper presents an approximate analysis technique lot preliminary analysis of multiple facade rigger stiffened braced frames in tall buildings subjected to uniformly and triangularly distributed loads as well as a lateral point load at the top of the structure. Comparisons with the results by the program MIDAS for the structural models have shown that this analysis can give reasonably accurate results for highrise braced frames with multiple facade riggers. The method allows a simple procedure for obtaining the optimum level of the facade riggers in addition to a rapid assessment of the influence of the facade riggers on the performance of the highrise structure such as the reduction in lateral deflection at the top and the overturning moment at the base of the braced frame.
Keywords
facade rigger; highrise building; shear stiffness; lateral deflection;
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  • Reference
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