Farideh Rezagholizadehomran - Master Student, Department of Civil Engineering, Khayyam University, Mashhad, Iran
Morteza Sheikhi - Ph.D, Associate Professor, Department of Civil Engineering, Khayyam University, Mashhad, Iran
Masoomeh Malekzadehgonabadi - Civil Engineer Expert, Mashhad municipality, Mashhad, Iran

To design tall buildings, choosing a stable system that can withstand significant lateral loads is the main challenge.One of the creative systems which show a good behavior in this condition, is the diagrid system. In terms ofconfigurations, the traditional pattern with triangular modules has been the only used configuration in this systemfor a long time. In this research, a new configuration was introduced for the grid structures and its properties werecompared with two previous prevalent patterns (diagrid and hexagrid). The new configuration is called Isometric-Cube grid. In order to compare it with two other patterns, a building with a symmetrical plan and ۳۵۱ meters inheight (۹۰ stories) was modeled in SAP۲۰۰۰. The patterns were analyzed for the different angles of ۵۰, ۶۰, ۷۰degrees, one time with the module height equal to the story’s height and another time with the module heightequal to two times of the story’s height. After being designed with the Eurocode, it was determined that the shearstiffness of new pattern is between two former patterns (closer to the hexagrid) and the optimum angle for thediagonal members ranges from ۵۰ to ۷۰ degrees in the new pattern.

Tall buildings, tubular structures, parametric design, diagrid, wind load