Progressive Collapse Analysis Of A High-rise
Building Considering The Effect Of An Outriggerbelt
Lateral Load Resisting System
Author(s)
J. M. Mirhom, H. T. Hafez, K. N. Ibrahim, J. R. Shaker
& M. Abdel-Mooty
Abstract
The effect of an outrigger and belt system, mainly provided for resisting lateral
wind and seismic loads, on the progressive collapse analysis of a 52 floor high
rise building is presented in this paper. The main lateral load resisting element of
the building is reinforced concrete core located at the centre of the building. In
addition to the RC core walls, two outrigger and belt systems are introduced at
the top of the building and at its mid-height. Each system is made of four steel
trusses connecting the façade columns to the central reinforced concrete core.
Each outrigger system is provided by a belt truss that links all columns on the
façade to the outrigger trusses. The purpose of progressive collapse analysis in
this paper is to study alternative load paths that eliminates the total collapse and
minimizes the local damage and failure of the building. Nonlinear dynamic
progressive collapse analysis is carried out where selected columns at the ground
level are suddenly removed. This simulates the effect of accidental explosion
near the building facade. The nonlinear dynamic analysis is carried out using
ELS software (Extreme Loading for Structures) utilizing applied element
technique. Different factors that affect the building response to progressive
collapse scenarios are studied and presented in this work.
Keywords: blast design, progressive collapse, outrigger-belt system, applied
element.
Keywords
blast design, progressive collapse, outrigger-belt system, applied
element
Related Book
Other papers in this volume
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