Spectrum-Compatible Earthquake Records and Their Influence on the Seismic Response of Reinforced Concrete Structures

2016 ◽  
Vol 32 (1) ◽  
pp. 101-123 ◽  
Author(s):  
Ramon L. Gascot ◽  
Luis A. Montejo
Keyword(s):  
Frequency Domain ◽  
Structural Response ◽  
Strong Motion ◽  
Continuous Wavelet ◽  
Earthquake Records ◽  
Inelastic Demand ◽  
Target Spectrum ◽  
Motion Characteristics ◽  
Frequency Domain Approach ◽  
Original Characteristic

Three different methodologies for the generation of spectrum-compatible records are evaluated: wavelet-based modification of seed records, seed record adjustment based on the continuous wavelet transform, and synthetic record generation in the frequency domain. It was found that the three methodologies are capable of generating compatible records with an acceptable level of match. However, the records generated using the frequency domain approach exhibit unrealistic strong motion characteristics and a tendency to induce less inelastic demand in the structures. In the case of methodologies based on modification of actual earthquake records, it was found that when the seed records are selected based on their initial compatibility with the target spectrum, the resultant compatible records not only better retain the original characteristic of the records but the variability in the structural response is reduced.

Spectral matching RotD100 target spectra: Effect on records characteristics and seismic response

2021 ◽  
pp. 875529302110492
Author(s):  
Alan Rivera-Figueroa ◽  
Luis A Montejo
Keyword(s):  
Seismic Response ◽  
Strong Motion ◽  
Bridge Piers ◽  
Spectral Variability ◽  
Reinforced Concrete Bridge ◽  
Energy Demands ◽  
Target Spectrum ◽  
Single Column ◽  
Scaling Down ◽  
Motion Characteristics

This article investigates three different approaches to generate seismic input compatible with RotD100 design spectra: (1) separately matching each horizontal component to the target spectrum, (2) separately matching and then scaling-down the records to improve the match and (3) directly pursuing the match of RotD100 by simultaneously modifying both horizontal components. We examine the strong motion characteristics of the resulting records individually and their variability as suites of input records. The records generated, along with a set of amplitude-scaled records, are used as input for bi-directional non-linear response history analyses of idealized single column reinforced concrete bridge piers with different geometric and reinforcement characteristics. It is shown that the records generated pursuing a direct match of the target spectrum attain the closest match, retain better the strong motion characteristics of the seed records and their horizontal components exhibit a spectral variability comparable to suites of amplitude-scaled records. Regarding the effect on seismic response, the suites constructed separately matching each component consistently imposed larger peak inelastic and total energy demands than all other suites. Directly pursuing the match of RotD100 generated responses close but consistently below the expected from amplitude-scaled suites. The best results were obtained using the direct match methodology but using as target 110% the RotD100 spectrum as required in ASCE 7-16.

scholarly journals A frequency‐domain approach for damage detection in welded structures

2021 ◽  
Author(s):  
Camilla Ronchei ◽  
Sabrina Vantadori ◽  
Andrea Carpinteri ◽  
Ignacio Iturrioz ◽  
Roberto Issopo Rodrigues ◽  
...  
Keyword(s):  
Damage Detection ◽  
Frequency Domain ◽  
Welded Structures ◽  
Frequency Domain Approach

A frequency domain approach to residual generation for the industrial actuator benchmark

1995 ◽  
Vol 3 (12) ◽  
pp. 1747-1750 ◽  
Author(s):  
E. Alcorta García ◽  
B. Köppen-Seliger ◽  
P.M. Frank
Keyword(s):  
Frequency Domain ◽  
Frequency Domain Approach ◽  
Residual Generation
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