Nonlinear dynamic tests of a reinforced concrete frame building at different damage levels

Yousefianmoghadam, Seyedsina; Song, Mingming; Mohammadi, Mohammad Ebrahim; Packard, Brittany; Stavridis, Andreas; Moaveni, Babak; Wood, Richard L.

doi:10.1002/eqe.3271

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…A similar experimental campaign has been performed by Moaveni et al [95]: they tested a 2/3-scaled three-storey infilled RC frame built on a shaking table following design prescriptions of past codes, and they achieved very similar outcomes. Yousefianmoghadam et al [96,97] tested two real infilled RC frame buildings (with two and ten stories) with FVs (shaker), free vibrations and AVTs considering different damage levels of the infills; in detail, the damage was simulated removing progressively some infills throughout the building. They found a progressively decrease in frequencies after the infill damage, together with a frequency decrease with the increasing input excitation level (in terms of acceleration amplitudes), i.e., the frequencies identified from AVT recordings were higher than those identified from FV and free vibration measurements.…”

Section: Vibration-based Tests For the Damage Assessment Of Infilled ...mentioning

confidence: 99%

Vibration-Based Tests and Results for the Evaluation of Infill Masonry Walls Influence on the Dynamic Behaviour of Buildings: A Review

Nicoletti

Arezzo

Carbonari

et al. 2022

Arch Computat Methods Eng

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Tests on infill masonry walls have been widely performed by many researchers and for a long time with the main purpose of characterising the infill performance under earthquake-type excitations. However, most of these works deal with laboratory tests on purpose-built specimens. More recently, vibration-based tests have been also adopted to investigate the influence of the non-structural elements on the dynamic behaviour of buildings, with the advantage that this kind of tests can be performed both on laboratory specimens and on in-situ buildings. However, differently from classical infill tests (i.e., monotonic or cyclic lateral load tests, out of plane tests, etc.), a limited number of works is available in the literature discussing the outcomes and possible procedures for testing infilled structures with vibration-based methods aimed to investigate the role of the non-structural components. This paper presents a literature review of research works dealing with vibration-based tests performed on RC frame structures with the main target of discussing the influence of non-structural components on the dynamics of buildings. Tests on infilled buildings performed during the construction, in operating conditions and after the damage occurred due to earthquake shakings, are discussed. Furthermore, a comprehensive review about papers discussing vibration-based tests performed on infill masonry walls is presented and in-depth investigated with the aim of finding possible correlations between the dynamic test outcomes and the infill geometric and mechanical properties. From this study it comes out the need of further experimental data on both undamaged and damaged infills in order to get more reliable correlations.

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Section: Vibration-based Tests For the Damage Assessment Of Infilled ...mentioning

confidence: 99%

Vibration-Based Tests and Results for the Evaluation of Infill Masonry Walls Influence on the Dynamic Behaviour of Buildings: A Review

Nicoletti

Arezzo

Carbonari

et al. 2022

Arch Computat Methods Eng

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“…The third application is a two-story RC building located in El Centro, California, shown in Figure 13 a [ 6 , 56 , 69 , 70 ]. The building was severely damaged by past earthquakes and left uninhabited, which provided an opportunity to perform wall removals and destructive shaking tests on this full-scale RC building.…”

Section: Applications To Three Full-scale Civil Structuresmentioning

confidence: 99%

Accounting for Modeling Errors and Inherent Structural Variability through a Hierarchical Bayesian Model Updating Approach: An Overview

Song

Behmanesh

Moaveni

et al. 2020

Sensors

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Mechanics-based dynamic models are commonly used in the design and performance assessment of structural systems, and their accuracy can be improved by integrating models with measured data. This paper provides an overview of hierarchical Bayesian model updating which has been recently developed for probabilistic integration of models with measured data, while accounting for different sources of uncertainties and modeling errors. The proposed hierarchical Bayesian framework allows one to explicitly account for pertinent sources of variability such as ambient temperatures and/or excitation amplitudes, as well as modeling errors, and therefore yields more realistic predictions. The paper reports observations from applications of hierarchical approach to three full-scale civil structural systems, namely (1) a footbridge, (2) a 10-story reinforced concrete (RC) building, and (3) a damaged 2-story RC building. The first application highlights the capability of accounting for temperature effects within the hierarchical framework, while the second application underlines the effects of considering bias for prediction error. Finally, the third application considers the effects of excitation amplitude on structural response. The findings underline the importance and capabilities of the hierarchical Bayesian framework for structural identification. Discussions of its advantages and performance over classical deterministic and Bayesian model updating methods are provided.

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“…Currently, there have been a large number of numerical simulations and model experiments. However, whether it can accurately grasp its true stress state and stress environment, whether it can be ignored in engineering design, whether it can ignore certain stress states and failure forms, and whether it can bring potential safety risks are important issues that urgently need to be solved [1][2][3]. During service, structural damage and even sudden accidents can occur due to fatigue, corrosion, material aging, and seismic effects.…”

Section: Introductionmentioning

confidence: 99%

Simulation analysis of structural nonlinear seismic response

Qin

2023

Int. J. Simul. Multidisci. Des. Optim.

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Faced with the difficulty of analyzing structural nonlinear seismic response, this study focuses on the reinforced concrete frame structure and designs a frame that meets the specifications. Artificial synthetic seismic records and natural seismic records were selected, and the acceleration response of the first story of the structure was used as the output sample for the study. On the basis of a nonlinear autoregressive moving average model with external inputs, a neural network model was constructed and nonlinear seismic response simulation analysis was conducted. These results confirm that the research method has good predictive performance and can effectively predict structural nonlinear seismic response. Under the action of artificial earthquake records, there is a small difference between them and the acceleration time history curve and acceleration response peak obtained from time history analysis. Under the action of artificial seismic record ACC12, when the time is 25 s, the calculation results of time history analysis and research methods are 1.715 m/s2 and 1.403 m/s2, respectively, with the former being 0.312 m/s2 smaller than the latter. In natural earthquake records, with a characteristic period of 0.30 s, under the action of natural earthquake record USA00668, the relative energy of time history analysis is 4.997 m2/s when the time is 30 s, which is 0.938 m2/s higher than the research method. The research method can accurately analyze the nonlinear seismic response of the results.

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Nonlinear dynamic tests of a reinforced concrete frame building at different damage levels

Cited by 9 publications

References 22 publications

Vibration-Based Tests and Results for the Evaluation of Infill Masonry Walls Influence on the Dynamic Behaviour of Buildings: A Review

Vibration-Based Tests and Results for the Evaluation of Infill Masonry Walls Influence on the Dynamic Behaviour of Buildings: A Review

Accounting for Modeling Errors and Inherent Structural Variability through a Hierarchical Bayesian Model Updating Approach: An Overview

Simulation analysis of structural nonlinear seismic response

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