Intensity measures for the seismic response of pile foundations

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.

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

Earthquake Spectra ◽

10.1193/061317eqs114m ◽

2018 ◽

Vol 34 (2) ◽

pp. 587-610 ◽

Cited By ~ 6

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.

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

Bulletin of Earthquake Engineering ◽

10.1007/s10518-015-9863-6 ◽

2016 ◽

Vol 14 (4) ◽

pp. 1265-1284 ◽

Cited By ~ 13

Author(s):

Hamzeh Shakib ◽

Vahid Jahangiri

Keyword(s):

Seismic Response ◽

Intensity Measures

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Critical Assessment of Intensity Measures for Seismic Response of Italian RC Bridge Portfolios

Journal of Earthquake Engineering ◽

10.1080/13632469.2017.1342293 ◽

2017 ◽

Vol 23 (6) ◽

pp. 980-1000 ◽

Cited By ~ 9

Author(s):

Claudia Zelaschi ◽

Ricardo Monteiro ◽

Rui Pinho

Keyword(s):

Seismic Response ◽

Critical Assessment ◽

Intensity Measures

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A Review on Effect of Pile Stiffness on Seismic Response of Structure

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.39357 ◽

2021 ◽

Vol 9 (12) ◽

pp. 772-774

Author(s):

Mohit Bharat Dange

Keyword(s):

Seismic Response ◽

Pile Foundation ◽

Seismic Loading ◽

Pile Foundations ◽

Seismic Behaviour ◽

Foundation Design ◽

Earthquake Loads ◽

Pile Cap ◽

Seismic Forces ◽

Shaky Ground

Abstract: Pile foundations are widely employed for a variety of structures on shaky ground. The importance of seismic design in ensuring the effective operation of a structure under severe seismic loading conditions cannot be overstated. For the analysis of seismic forces on a structure, IS 1893 will be employed. This research entails the choosing of a specific form of building structure. A comparison of buildings with and without pile foundations will be shown. Because of the differences in their properties, the seismic behaviour of the various structures differs. The influence of pile stiffness on the structure's seismic response will be investigated. The rigidity of the piling foundation could have an impact on the structure.With the rise in seismic activity, there may be a need for more efficient pile foundation design to withstand earthquake loads. The major goal of this study is to compare pile stiffness with changes in diameter and zone. Keywords: Pile Foundation, STAAD-Pro, Structure, Stiffness, zone, Pile Cap, Load Estimation, Pile cap, Pattern of Pile.

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