OPTIMISED ANGLE OF DIAGONAL IN TALL BUILDING USING DIAGRID-TUBE STRUCTURES

Abstract

Diagrid-tube structures have been successfully used to construct some skyscrapers in the world. Architectural aesthetic and high strength in lateral load resistance are advantages of this structural type. This good choice can bring us a very interesting economic gain caused by a maximum reduction in material. In case of these buildings, diagrid-tube is the main structure, therefore its configuration determining the lateral rigidity of whole structure and angle of diagonal is especially important. This paper shows how the structure behaves in case of lateral loads and evaluates its rigidity. Optimized angle is proposed by an analytical approach. Some numerical examples are also simulated in order to compare with analytical results which are very useful for structural designers.