Mohsen Rostami (master of structure engineering, faculty of technical Islamic Azad university south Tehran branch , Tehran , Iran)
Kaveh Ghoochani (master of structure engineering, faculty of technical Islamic Azad university south Tehran branch , Tehran , Iran)
Fatemeh Gorji sinaki (master of earthquake engineering, faculty of technical Islamic Azad university south Tehran branch , Tehran , Iran)
Abdolreza S.Moghadam (International institute of Earthquake and seismology department of civil engineering ,Tehran, Iran)
Abstract:
The most important issue in the design of high-rise buildings is the lateral load system that accordingly, the selection of a structural systems that can ductility, stiffness, and sufficient resistance based on valid regulations provide is the most important principle in the field of high-rise building because the parameters of stiffness, ductility and structural resistance system will change with variation the type of lateral load systems a relatively large amount. therefore, in this study, new structural system have been extended that nominated new Hexagrid, three structural systems tube and diagrid and new Hexagrid in similar structures (in plan, height, loading, etc) with 30 floors has been modelled in software ABAQUS and SAP2000 and after the calculation of earthquake factors on structures mentioned by program written in MATLAB based on 2800 regulation. Analysis of static and liner dynamic and nonlinear static (pushover), respectively is done on structures 30 floors of the diagrid and tube and new hexagrid , finally after analysing of 3 structure studied, the advantages and disadvantages and relative superiority of the three systems lateral load in structures mentioned based on stiffness parameters, relative displacement, ductility and resistance compared with each other. the importance of this comparison is that based on its finding can be determined the system suitable lateral load based on the seismic hazard at the site of construction. The results of the above analysis show that the new Hexagrid structures, have stiffness higher than the tube and Diagrid structures but its plasticity is lower than that other system.
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