Intensity measures for the assessment of the seismic response of buried steel pipelines

2016 ◽  
Vol 14 (4) ◽  
pp. 1265-1284 ◽  
Author(s):  
Hamzeh Shakib ◽  
Vahid Jahangiri
Keyword(s):  
Seismic Response ◽  
Intensity Measures

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.

Consideration and Propagation of Ground Motion Selection Epistemic Uncertainties to Seismic Performance Metrics

2018 ◽  
Vol 34 (2) ◽  
pp. 587-610 ◽  
Author(s):  
Karim Tarbali ◽  
Brendon A. Bradley ◽  
Jack W. Baker
Keyword(s):  
Seismic Hazard ◽  
Seismic Response ◽  
Ground Motion ◽  
Seismic Performance ◽  
Performance Metrics ◽  
Epistemic Uncertainty ◽  
Seismic Demand ◽  
Intensity Measures ◽  
Ground Motion Selection ◽  
The Mean

This paper investigates various approaches to propagate the effect of epistemic uncertainty in seismic hazard and ground motion selection to seismic performance metrics. Specifically, three approaches with different levels of rigor are presented for establishing the conditional distribution of intensity measures considered for ground motion selection, selecting ground motion ensembles, and performing nonlinear response history analyses (RHAs) to probabilistically characterize seismic response. The mean and distribution of the seismic demand hazard is used as the principal means to compare the various results. An example application illustrates that, for seismic demand levels significantly below the collapse limit, epistemic uncertainty in seismic response resulting from ground motion selection can generally be considered as small relative to the uncertainty in the seismic hazard itself. In contrast, uncertainty resulting from ground motion selection appreciably increases the uncertainty in the seismic demand hazard for near-collapse demand levels.

scholarly journals Intensity measures for the seismic response of pile foundations

2009 ◽  
Vol 29 (6) ◽  
pp. 1046-1058 ◽  
Author(s):  
Brendon A. Bradley ◽  
Misko Cubrinovski ◽  
Rajesh P. Dhakal ◽  
Gregory A. MacRae
Keyword(s):  
Seismic Response ◽  
Pile Foundations ◽  
Intensity Measures

Intensity measures for the seismic response prediction of mid-rise buildings with hysteretic dampers

2015 ◽  
Vol 102 ◽  
pp. 278-295 ◽  
Author(s):  
J. Donaire-Ávila ◽  
F. Mollaioli ◽  
A. Lucchini ◽  
A. Benavent-Climent
Keyword(s):  
Seismic Response ◽  
Response Prediction ◽  
Intensity Measures ◽  
Hysteretic Dampers

Intensity measures for the seismic response assessment of plain concrete arch bridges

2018 ◽  
Vol 16 (9) ◽  
pp. 4225-4248 ◽  
Author(s):  
Vahid Jahangiri ◽  
Mahdi Yazdani ◽  
Mohammad Sadegh Marefat
Keyword(s):  
Seismic Response ◽  
Plain Concrete ◽  
Response Assessment ◽  
Intensity Measures ◽  
Arch Bridges

Probabilistic Seismic Response Models for Risk Assessment and Design of Steel Moment Frames with Linear Viscous Dampers

2019 ◽  
Vol 35 (1) ◽  
pp. 267-288 ◽  
Author(s):  
Omid Dadpour ◽  
Mehdi Banazadeh
Keyword(s):  
Risk Assessment ◽  
Seismic Response ◽  
Seismic Risk ◽  
Probabilistic Models ◽  
Design Procedure ◽  
Structural Response ◽  
Principal Component ◽  
Moment Frames ◽  
Intensity Measures ◽  
Design Variables

The use of supplemental viscous damping significantly improves the seismic performance of buildings; however, a design procedure that considers seismic risk is necessary. The aim of this article is to simplify the seismic risk assessment of mid-rise steel frames with linear viscous fluid dampers by employing probabilistic models and a reliability analysis. The development of a probabilistic seismic response model (PSRM) to predict the structural response without performing extensive computation is a principal component of this methodology. The design and modeling of generic frames, record selection, cloud analysis, assessment of candidate intensity measures, and use of vector-valued intensity measures are the primary aspects of this study, the goal of which is to put forward a PSRM for the target frames. Comparison of the PSRM outcome with the results of case studies demonstrates the acceptable accuracy of the models for the design earthquake; these models lead to a reduction in the computation and complexity involved in selecting design variables to achieve a target risk.

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