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Corresponding Author

Bayoumy, Attia

Subject Area

Civil and Environmental Engineering

Article Type

Original Study

Abstract

The tube in tube structure is one of the most efficient system for resisting lateral loads. The efficiency of this system i: derived from great number of rigid joints of the exterior frame tube in addition to the interior shear wall bending rigidity[1]. To make an approximate analysis for preliminary design of this structural type, the three dimensional analysis for the tube in tube system and each component (core shear wall and exterior (frame tube) under uniform lateral loads are presented. Based on knowing the lateral displacement from computer results, the average lateral loads that resisted by each part of the tube in tube system are derived as a function of the stiffness ratio (each part stiffness relative to the overall tube in tube stiffness). Also, the distribution of the average lateral loads through the height of each: part are estimated as a function of the building height. The results of this method proved that it is simple and case way for estimating the lateral loads distribution between the exterior framed tube and interior core shear wall and then, each part can be designed separately. The lateral load distribution between the core shear wall and lie exterior framed tube are presented.

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