A Study of Site Effects and Seismic Response of an Instrumented Building in Mexico City

Meli, Roberto; Faccioli, Ezio; Murià-Vila, David; Quaas, R.; Paolucci, Roberto

doi:10.1080/13632469809350315

Cited by 26 publications

(24 citation statements)

References 9 publications

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“…As reported in various papers (e.g. [28]; [27]), buildings founded on soft soils usually exhibit significant rocking owning to soil-structure interactions (SSI). This is true even for structures founded on deep foundations.…”

Section: /20mentioning

confidence: 99%

Full‐scale dynamic response of an RC building under weak seismic motions using earthquake recordings, ambient vibrations and modelling

Michel

Guéguen

Arem

et al. 2009

Earthq Engng Struct Dyn

110

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In countries with a moderate seismic hazard, the classical methods developed for strong motion prone countries to estimate the seismic behaviour and subsequent vulnerability of existing buildings are often inadequate and not financially realistic. The main goals of this paper are to show how the modal analysis can contribute to the understanding of the seismic building response and the good relevancy of a modal model based on ambient vibrations for estimating the structural deformation under moderate earthquakes. We describe the application of an enhanced modal analysis technique (Frequency Domain Decomposition) to process ambient vibration recordings taken at the Grenoble City Hall building (France). The frequencies of ambient vibrations are compared with those of weak earthquakes recorded by the French permanent accelerometric network (RAP) that was installed to monitor the building. The frequency variations of the building under moderate earthquakes are shown to be slight (~2%) and therefore ambient vibration frequencies are relevant over the elastic domain of the building. The modal parameters extracted from ambient vibrations are then used to determine the 1D lumped-mass model in order to reproduce the inter-storey drift under weak earthquakes and to fix a 3D numerical model that could be used for strong earthquakes. The correlation coefficients between data and synthetic motion are close to 80% and 90% in horizontal directions, for the 1D and 3D modelling, respectively.

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Section: /20mentioning

confidence: 99%

Full‐scale dynamic response of an RC building under weak seismic motions using earthquake recordings, ambient vibrations and modelling

Michel

Guéguen

Arem

et al. 2009

Earthq Engng Struct Dyn

110

View full text Add to dashboard Cite

show abstract

“…The causes may also be related to non-linear responses of the buildings. For example, transient variations are observed during seismic excitation due to the non-linear response of the soil-structure boundary (e.g., Jennings and Kuroiwa, 1968;Crouse and Jennings, 1975;Todorovska andTrifunac, 2008, Todorovska, 2009) or to the closing/opening process of pre-existing cracks within the elements of the reinforced concrete buildings (e.g., Luco et al, 1987;Meli et al, 1998;Clinton et al, 2006;. Permanent variations may also appear due to structural damage due to strong seismic motion (e.g., Safak and Celebi, 1991;Celebi et al, 1993;Dunand et al, 2006;Clinton et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

The Analysis of Long‐Term Frequency and Damping Wandering in Buildings Using the Random Decrement Technique

Mikael¹,

Guéguen²,

Bard³

et al. 2013

Bulletin of the Seismological Society of America

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The characterization and monitoring of buildings is an issue that has attracted the interest of many sectors over the last two decades. With the increasing use of permanent, continuous and real-time networks, ambient vibrations can provide a simple tool for the identification of dynamic building parameters. This study is focused on the long-term variation of frequency and damping in several buildings, using the Random Decrement Technique (RDT). RDT provides a fast, robust and accurate long-term analysis and improves the reliability of frequency and damping measurements for structural health monitoring. This reveals particularly useful information in finding out precisely how far changes in modal parameters can be related to changes in physical properties. This paper highlights the reversible changes of the structure's dynamic parameters, correlated with external forces, such as temperature and exposure to the sun. Contrasting behaviors are observed, including correlation and anti-correlation with temperature variations.

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“…The signals at the different sensors show clear variations in their amplitudes, depending on sensor's position, thus reflecting the different strengths vibration at different points along the bridge. While the amplitudes are largest at sensor pairs (4, 12) and (6,14), approaching the center of the bridge, the vibrations induced by the traffic diminish when approaching the edges.…”

Section: Advances In Civil Engineeringmentioning

confidence: 99%

“…To investigate this issue, we empirically calculated the modal shapes for the first four modal frequencies assembled in Table 1 of each component of motion following Meli et al [14]. The normalized modal shapes obtained for different 249 one-minute time windows are plotted in Figure 7.…”

Section: Modal Shapes Of Vibrationmentioning

confidence: 99%

Structural Health Monitoring Using Wireless Technologies: An Ambient Vibration Test on the Adolphe Bridge, Luxembourg City

Oth

Picozzi

2012

Advances in Civil Engineering

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Major threats to bridges primarily consist of the aging of the structural elements, earthquake-induced shaking and standing waves generated by windstorms. The necessity of information on the state of health of structures in real-time, allowing for timely warnings in the case of damaging events, requires structural health monitoring (SHM) systems that allow the risks of these threats to be mitigated. Here we present the results of a short-duration experiment carried out with low-cost wireless instruments for monitoring the vibration characteristics and dynamic properties of a strategic civil infrastructure, the Adolphe Bridge in Luxembourg City. The Adolphe Bridge is a masonry arch construction dating from 1903 and will undergo major renovation works in the upcoming years. Our experiment shows that a network of these wireless sensing units is well suited to monitor the vibration characteristics of such a historical arch bridge and hence represents a low-cost and efficient solution for SHM.

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A Study of Site Effects and Seismic Response of an Instrumented Building in Mexico City

Cited by 26 publications

References 9 publications

Full‐scale dynamic response of an RC building under weak seismic motions using earthquake recordings, ambient vibrations and modelling

Full‐scale dynamic response of an RC building under weak seismic motions using earthquake recordings, ambient vibrations and modelling

The Analysis of Long‐Term Frequency and Damping Wandering in Buildings Using the Random Decrement Technique

Structural Health Monitoring Using Wireless Technologies: An Ambient Vibration Test on the Adolphe Bridge, Luxembourg City

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