COMPARISON OF BEHAVIORAL ASPECTS OF HIGH RISE MULTISTORIED STEEL BUILDING WITH MASS PENDULUM SYSTEM AND X- BRACING SYSTEM USING STAAD.PRO V8I SOFTWARE

Jemal Bedane Halkiyo, Sultan Bedane Halkiyu, Raju Ramesh Reddy

Abstract: High Rise Multistory steel building developments have been rapidly increasing throughout our Country and worldwide. The lateral deflections of buildings includes bending and shear deflection are challenging part to the designed and existed building. Previously the X-bracing system is more effective to control the deflection of the high rise steel building. In this research, the new system called Mass pendulum Mechanism is introduced to control the lateral deflection of the steel building and the same compared with the X –bracing system. Mass pendulum system which is proved to be the better deflection controlling system is studied in depth and the overall comparison of the system with other deflection controlling mechanisms is outlined and analyzed. The use of this mechanism for design of high rise steel building can increase the lateral stiffness of building and decrease lateral displacements. The maximum reduction in the lateral displacement occurs at an angle of mass 45 degree with the weight of mass equal to 50% of the lateral load. In addition the Mass Pendulum Mechanism reduces bending moments and shear forces in the vertical and horizontal members of load transferring system. Moreover, stability of this system increases and the P-Delta effects decline. So, the columns will be protected against reaching nonlinear state. Finally the mass Pendulum system proved that it’s economical compare with X-bracing system in terms of structural steel material.

Keywords: XBS:-X-Bracing System, e-Eccentricity, M-self weight of building, MPS-30 DEGREE- Mass pendulum system at 30 degree, MPS-45 DEGREE- Mass pendulum system at 45 degree, MPS-60 DEGREE- Mass pendulum system at 60 degree.

DOI: https://doi.org/10.15623/ijret.2017.0604001