Seismic Behaviour of Outrigger Braced Systems in High Rise 2-D Steel Buildings

Abstract This paper aims to investigate the seismic behaviour of outrigger braced buildings to find out the optimum location of outrigger in high rise 2-D steel buildings. For this purpose, a nonlinear static pushover analysis was carried out on different outrigger braced high rise steel buildings of 20, 25, 30, and 35 storeys to capture the seismic response. In this study, the position of outriggers varies from a first storey to top storey in outrigger braced buildings of particular storey height. It is observed that the position of outriggers, lateral load patterns, and height of building significantly influences the seismic performance of the high rise building. The position of outriggers in high rise building significantly influences the seismic performance by increasing strength and stiffness, which are measured in terms of base shear, storey displacement, inter-storey drift ratio, and performance point. Furthermore, nonlinear static pushover analysis using different lateral load patterns points out that the optimum location of outrigger can be varied with different load patterns.

[1]  C. Y. Liaw,et al.  Earthquake-resistant steel frames with energy dissipating knee elements , 1995 .

[2]  C. Y. Liaw,et al.  Design of earthquake-resistant steel frames with knee bracing , 1991 .

[3]  Bungale S. Taranath,et al.  Structural Analysis and Design of Tall Buildings , 1988 .

[4]  Avigdor Rutenberg,et al.  Lateral load response of belted tall building structures , 1987 .

[5]  Anil K. Chopra,et al.  Evaluation of Modal and FEMA Pushover Analyses: SAC Buildings , 2004 .

[6]  H. H. Snijder,et al.  Preliminary analysis of high-rise braced frames with façade riggers , 2003 .

[7]  Jcd Hans Hoenderkamp,et al.  Analysis of high‐rise braced frames with outriggers , 2003 .

[8]  R. Shankar Nair.  Belt Trusses and Basements as "Virtual" Outriggers for Tall Buildings , 2003 .

[9]  Alexander Coull,et al.  Analysis of Multioutrigger-Braced Structures , 1989 .

[10]  Xinzheng Lu,et al.  Earthquake-induced collapse simulation of a super-tall mega-braced frame-core tube building , 2013 .

[11]  B. Stafford Smith,et al.  FORMULAE FOR OPTIMUM DRIFT RESISTANCE OF OUTRIGGER BRACED TALL BUILDING STRUCTURES , 1983 .

[12]  Mohsen A. Issa,et al.  Behavior of masonry-infilled nonductile reinforced concrete frames , 2002 .

[13]  S. Fawzia,et al.  Deflection Control in Composite Building by Using Belt Truss and Outriggers Systems , 2010 .

[14]  Dhanaraj M. Patil,et al.  Seismic Behaviour of Different Bracing Systems in High Rise 2-D Steel Buildings , 2015 .

[15]  Po Seng Kian.  THE USE OF OUTRIGGER AND BELT TRUSS SYSTEM FOR HIGH-RISE CONCRETE BUILDINGS , 2004 .

[16]  Qiusheng Li,et al.  Structural performance of multi‐outrigger‐braced tall buildings , 2003 .

[17]  Jcd Hans Hoenderkamp,et al.  Shear wall with outrigger trusses on wall and column foundations , 2004 .

[18]  Faramarz Khoshnoudian,et al.  Assessment of conventional nonlinear static procedures with FEMA load distributions and modal pushover analysis for high-rise buildings , 2008 .

[19]  H Herm Hofmeyer,et al.  High-Rise Structures with Belt Bracing Subject to Lateral Load , 2012 .

[20]  Reza Rahgozar,et al.  OPTIMUM LOCATION OF OUTRIGGER-BELT TRUSS IN TALL BUILDINGS BASED ON MAXIMIZATION OF THE BELT TRUSS STRAIN ENERGY , 2013 .

[21]  Qiusheng Li,et al.  Seismic analysis of the world’s tallest building , 2009 .

[22]  Charalampos Baniotopoulos,et al.  Optimum outrigger locations of high-rise steel buildings for wind loading , 2009 .

[23]  Thambirajah Balendra,et al.  Preliminary studies into the behaviour of knee braced frames subject to seismic loading , 1991 .

[24]  Farzad Naeim,et al.  The Seismic Design Handbook , 1989 .

[25]  Roberto Nascimbene,et al.  Seismic analysis of high-rise mega-braced frame-core buildings , 2016 .

[26]  Azhar Nasir,et al.  Study of the Effectiveness of Outrigger System for High-Rise Composite Buildings for Cyclonic Region , 2011 .

[27]  Egor P. Popov,et al.  Characteristics of eccentrically braced frames , 1984 .

[28]  Jcd Hans Hoenderkamp,et al.  Periods of Vibration of Braced Frames with Outriggers , 2012 .

[29]  Barzin Mobasher,et al.  Optimized use of the outrigger system to stiffen the coupled shear walls in tall buildings , 2004 .

[30]  Anil K. Chopra,et al.  A modal pushover analysis procedure for estimating seismic demands for buildings , 2002 .

[31]  Jae-Yeol Kim,et al.  An analytical model for high‐rise wall‐frame structures with outriggers , 2008 .