System reliability-based seismic collapse assessment of steel moment frames using incremental dynamic analysis and Bayesian probability network

2016 ◽  
Vol 118 ◽  
pp. 274-286 ◽  
Author(s):  
Ehsan Fereshtehnejad ◽  
Mehdi Banazadeh ◽  
Abdollah Shafieezadeh
Keyword(s):  
Dynamic Analysis ◽  
System Reliability ◽  
Incremental Dynamic Analysis ◽  
Bayesian Probability ◽  
Moment Frames ◽  
Steel Moment Frames ◽  
Seismic Collapse ◽  
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

Seismic collapse assessment of double-layer barrel vault roofs with double-layer vertical walls

2019 ◽  
Vol 22 (13) ◽  
pp. 2837-2852
Author(s):  
Mohammad Kheirollahi ◽  
Karim Abedi ◽  
Mohammad Reza Chenaghlou
Keyword(s):  
Dynamic Analysis ◽  
Double Layer ◽  
Incremental Dynamic Analysis ◽  
Structural System ◽  
Buckling Mode ◽  
Compression Members ◽  
Seismic Collapse ◽  
Vertical Walls ◽  
Collapse Behavior ◽  
Mode Failure

Double-layer barrel vault roofs with double-layer vertical walls are frequently used as a structural system for highly important public buildings; therefore, their seismic design needs special considerations. In this article, the seismic collapse behavior of these structures, used as a lateral load-resisting system, is evaluated by carrying out incremental dynamic analysis. For this purpose, different rise-to-span and height-to-span ratios are considered for the roofs and the walls, respectively. The structures are first designed in accordance with Iranian design codes and then they are modeled in OpenSees. The material and geometric nonlinearities are considered in the analyses, including the buckling response of the compression members. At the next stage, the models are subjected to incremental dynamic analysis and their median collapse capacities are extracted. Collapse margin ratios of various structures are finally derived, following FEMA-P695 methodology, and compared against the established acceptable limits. The obtained results show that collapse of the structures occurs mainly due to the buckling-mode failure of the roof. The collapse performance of the structures with large rise-to-span ratio of roofs and large height-to-span ratio of walls is unacceptable.

Robustness of steel moment frames against progressive collapse by means of plastic limit analysis

2019 ◽  
Vol 11 (2) ◽  
pp. 264-276
Author(s):  
Arash Naji
Keyword(s):  
Dynamic Analysis ◽  
Limit Analysis ◽  
Progressive Collapse ◽  
Nonlinear Dynamic Analysis ◽  
Solution Procedure ◽  
Plastic Limit ◽  
Moment Frames ◽  
Steel Moment Frames ◽  
Content Type ◽  
Plastic Limit Analysis

Purpose Progressive collapse refers to a phenomenon, in which local damage in a primary structural component leads to total or partial structural system failure, without any proportionality between the initial and final damage. Robustness is a measure that demonstrates the strength of a structure to resist progressive collapse. Static pushdown and nonlinear dynamic analysis were two main procedures to calculate the capacity of structures to resist progressive collapse. According to previous works, static analysis would lead to inaccurate results. Meanwhile, capacity analysis by dynamic analysis needs several reruns and encountering numerical instability is inevitable. The purpose of this paper is to present the formulation of a solution procedure to determine robustness of steel moment resisting frames, using plastic limit analysis (PLA). Design/methodology/approach This formulation utilizes simplex optimization to solve the problem. Static pushdown and incremental dynamic methods are used for verification. Findings The results obtained from PLA have good agreement with incremental analysis results. While incremental dynamic analysis is a very demanding method, PLA can be utilized as an alternative method. Originality/value The formulation of progressive collapse resistance of steel moment frames by means of PLA is not proposed in previous research works.

Seismic collapse assessment of reinforced concrete moment frames using endurance time analysis

2014 ◽  
Vol 24 (4) ◽  
pp. 300-315 ◽  
Author(s):  
Hossein Tajmir Riahi ◽  
Hamed Amouzegar ◽  
Mehrdad Falsafioun
Keyword(s):  
Reinforced Concrete ◽  
Moment Frames ◽  
Time Analysis ◽  
Endurance Time ◽  
Seismic Collapse ◽  
Collapse Assessment

Seismic collapse fragility of low-rise steel moment frames with mass irregularity based on shaking table test

2021 ◽  
Vol 19 (6) ◽  
pp. 2457-2482
Author(s):  
Yongtao Bai ◽  
Yinsheng Li ◽  
Zhenyun Tang ◽  
Marius Bittner ◽  
Matteo Broggi ◽  
...  
Keyword(s):  
Shaking Table Test ◽  
Shaking Table ◽  
Moment Frames ◽  
Steel Moment Frames ◽  
Seismic Collapse
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