Cascading Collapse Assessment Considering Hidden Failure

2011 ◽  
Author(s):  
Nur Ashida Salim ◽  
Muhammad Murtadha Othman ◽  
Ismail Musirin ◽  
Mohd Salleh Serwan
Keyword(s):  
Hidden Failure ◽  
Collapse Assessment

Collapse Assessment of Steel Moment Frames Based on E-Defense Full-Scale Shake Table Collapse Tests

2013 ◽  
Vol 139 (1) ◽  
pp. 120-132 ◽  
Author(s):  
Dimitrios G. Lignos ◽  
Tsuyoshi Hikino ◽  
Yuichi Matsuoka ◽  
Masayoshi Nakashima
Keyword(s):  
Full Scale ◽  
Shake Table ◽  
Moment Frames ◽  
Steel Moment Frames ◽  
Collapse Assessment

scholarly journals Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) method

2019 ◽  
Vol 258 ◽  
pp. 02012 ◽  
Author(s):  
Nur Ezzaryn Asnawi Subki ◽  
Hazrina Mansor ◽  
Yazmin Sahol Hamid ◽  
Gerard Parke
Keyword(s):  
Dynamic Analysis ◽  
Static Analysis ◽  
Progressive Collapse ◽  
Structural Response ◽  
Steel Frame ◽  
Collapse Mechanism ◽  
Load Path ◽  
Acceptance Criterion ◽  
Current Energy ◽  
Collapse Assessment

The Alternate Load Path (ALP) is a useful method that has generated a considerable recent research interest for the assessment of progressive collapse. The outcome of the ALP analysis can be assessed either using the force-based approach or the energy-based approach. The Unified Facilities Criteria (UFC- 4- 023-03) of progressive collapse guideline - have outlined that the force-based approach can either be analysed using static or dynamic analysis. The force-based approach using static analysis is preferable as it does not require a high level of skill and experience to operate the software plus no effort is required in scrutinising the validity of the analysis results output. However, utilising the static approach will eliminate the inertial effect in capturing the actual dynamic response of the collapsed structure. In recent years, the development of the energy-based progressive collapse assessment is attracting widespread interest from researchers in the field; as the approach can produce a similar structural response with the force-based dynamic analysis by only using static analysis. Most of the current energy-based progressive collapse assessments are developed following the requirements which are given in the progressive collapse guidelines provided by the Unified Facilities Criteria. However, little attention is given to the development of the energy-based approach using the Eurocode standards as a base guideline. This article highlights the merits of utilising the energy-based approach against the force-based approach for a collapsed structure and explains the collapse mechanism of a steel frame in the perspective of the energy concept. The state of the art of energy-based progressive collapse assessment for a structural steel frame is reviewed. The comprehensive review will include insights on the development of the energy-based method, assumptions, limitations, acceptance criterion and its applicability with the European standards. Finally, potential research gaps are discussed herein.

A new contingency analysis approach for voltage collapse assessment

2003 ◽  
Vol 25 (10) ◽  
pp. 781-785 ◽  
Author(s):  
A.C Zambroni de Souza ◽  
A.P Alves da Silva ◽  
Jorge L.A Jardim ◽  
C.A Silva Neto ◽  
G.L Torres ◽  
...  
Keyword(s):  
Analysis Approach ◽  
Voltage Collapse ◽  
Contingency Analysis ◽  
Collapse Assessment

An Investigation of Vector Intensity Measures for Seismic Collapse Assessment Under Far-Field Aftershocks

2020 ◽  
pp. 2150004
Author(s):  
F. Soleiman Meigooni ◽  
M. Tehranizadeh
Keyword(s):  
Seismic Response ◽  
Time History ◽  
Considerable Effect ◽  
Far Field ◽  
Spectral Acceleration ◽  
Intensity Measures ◽  
Rc Frames ◽  
Seismic Collapse ◽  
Collapse Assessment

Aftershock records have a considerable effect on the results of collapse assessments conducted on buildings. Thus, they should be selected cautiously. As the number of recorded aftershocks is not sufficient, mainshock records are often utilized instead. In order to increase the correlation between the aftershock time history and the seismic response of a structure, this research intends to investigate several Intensity Measures (IMs). For this study, three RC frames were considered. Forty-four far-field records from FEMAP-695 were selected as main and aftershock. Each building analysis was conducted under 44 mainshock–aftershock chains. According to the results, use of the summation of the first mode spectral acceleration value of aftershocks as the second part of a vector IM can lead to the sufficiency of the IM.

Sign in / Sign up

Export Citation Format

Share Document