Application of Progressive Collapse Analysis in a High-Rise Frame-Core Tube Structure

The developments in construction make it compulsory for architects to plan the high rise structures in RCC. Unfortunately due to some reasons like gas explosion, terrorist attack, fire etc. high rise structures undergoes some major component failure. As the major component fails, sometimes part of the structure or whole structure tends to collapse. This behavior of the structure is called as progressive collapse. Progressive collapse may be a chain reaction of failures that circulates either throughout or some of the structure lopsided to the first local failure. The progressive collapse of building structure is commenced when one or more vertical load carrying members are removed. One of the important characteristics of progressive collapse is that the final damage is not related to the initial damage. In this project it is proposed to carry out progressive collapse analysis of regular and irregular structures. Structural model of building has been fashioned din ETABS and loads are applied as per GSA guidelines, for evaluation of progressive collapse nonlinear static method of analysis has been used. The analysis is done using ETABS 18 software and using codes of analysis, IS 1893: 2016, IS 456: 2016. Joint displacements, axial force, bending moment are evaluated. In all cases progressive collapse of internal column is more critical as compared to other cases.

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Progressive collapse analysis of a high-rise building considering the effect of an outrigger-belt lateral load resisting system

Structures Under Shock and Impact XII ◽

10.2495/su120261 ◽

2012 ◽

Author(s):

J. M. Mirhom ◽

H. T. Hafez ◽

K. N. Ibrahim ◽

J. R. Shaker ◽

M. Abdel-Mooty

Keyword(s):

Progressive Collapse ◽

Lateral Load ◽

High Rise ◽

High Rise Building ◽

Collapse Analysis ◽

Progressive Collapse Analysis

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Progressive Collapse Analysis of SRC Frame-RC Core Tube Hybrid Structure

Applied Sciences ◽

10.3390/app8112316 ◽

2018 ◽

Vol 8 (11) ◽

pp. 2316 ◽

Cited By ~ 5

Author(s):

Xingxing Chen ◽

Wei Xie ◽

Yunfeng Xiao ◽

Yiguang Chen ◽

Xianjie Li

Keyword(s):

Reinforced Concrete ◽

Structural Model ◽

Progressive Collapse ◽

Shear Walls ◽

Fe Model ◽

Load Path ◽

Core Tube ◽

Shear Distribution ◽

Collapse Analysis ◽

Progressive Collapse Analysis

Steel reinforced concrete (SRC) frame-reinforced concrete (RC) core tube hybrid structures are widely used in high-rise buildings. Focusing on the progressive collapse behavior of this structural system, this paper presents an experiment and analysis on a 1/5 scaled, 10-story SRC frame-RC core tube structural model. The finite element (FE) model developed for the purpose of progressive collapse analysis was validated by comparing the test results and simulation results. The alternate load path method (APM) was applied in conducting nonlinear static and dynamic analyses, in which key components including columns and shear walls were removed. The stress state of the beams adjacent to the removed component, the structural behavior including inter-story drift ratio and shear distribution between frame and tube were investigated. The demand capacity ratio (DCR) was applied to evaluate the progressive collapse resistance under loss of key components scenarios. The results indicate that the frame and the tube cooperate in a certain way to resist progressive collapse. The core tube plays a role as the first line of defense against progressive collapse, and the frame plays a role as the second line of defense against progressive collapse. It is also found that the shear distribution is related to the location of the component removed, especially the corner column and shear walls.

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