Exploració per tema "Ponts -- Manteniment i reparació"
Ara es mostren els items 1-20 de 26
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A combined kernel-PCA with clustering analysis for bridge damage detection under changing environmental conditions
(2020)
Text en actes de congrés
Accés restringit per política de l'editorialDamage caused in bridges can be hidden by the service conditions mainly due to environment effects as temperature and traffic loading. The literature review indicates that the majority of investigations are limited since ... -
A hybrid method for vibration-based bridge damage detection
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-11-29)
Article
Accés obertDamage detection algorithms employing the conventional acceleration measurements and the associated modal features may underperform due to the limited number of sensors used in the monitoring and the smoothing effect of ... -
A state of the art review of modal-based damage detection in bridges: development, challenges, and solutions
(Multidisciplinary Digital Publishing Institute (MDPI), 2018)
Capítol de llibre
Accés obertThis issue is a snapshot of the newest research in SHM for civil structures, and it includes a range of topics such as data processing algorithms to detect damage, modeling, and simulation [1–15]; sensor development and ... -
Bridge damage detection by variational mode decomposition and PCA of traffic-induced vibrations under environmental variability
(International Centre for Numerical Methods in Engineering (CIMNE), 2023)
Text en actes de congrés
Accés obertThe environmental and operational influence is still a challenging problem owing because they mask structural damage in civil structures such as bridges. However, advances in signal processing and new artificial intelligence ... -
Bridge damage identification under operational and environmental variability
(Universitat Politècnica de Catalunya, 2020-07-30)
Projecte Final de Màster Oficial
Accés obertLos puentes pueden llegar a colapsar bajo ciertas circunstancias, por ejemplo, por desastres naturales, sobrecarga de tráfico, procesos de deterioro o falta de mantenimiento, lo que genera grandes costes de renovación y ... -
Bridge strengthening by structural change: from continuous beam to network arch
(CRC Press, 2010)
Text en actes de congrés
Accés restringit per política de l'editorialIn Chimbarongo, VI region of Chile, is located the San Luis road bridge, built in the year 1930. During last inspections have been detected severe scour in the piers, besides other damages, which have forced the closure ... -
COST Action TU1406 and main results on bridge lifecycle management
(CRC Press, 2018)
Text en actes de congrés
Accés restringit per política de l'editorialLife-cycle analyses are used in condition assessment of new and existing bridges, as well as for evaluation of maintenance strategies. Management systems, capturing different degradation processes, are very often used in ... -
Damage detection in a real truss bridge using Hilbert-Huang Transform of transient vibrations
(CRC Press, 2021)
Text en actes de congrés
Accés restringit per política de l'editorialStructural Health Monitoring (SHM) in bridges is an important field, which implements increasingly innovative damage detection strategies for both theoretical developments and laboratory-scale implementations. However, is ... -
Damage identification of bridge structures using the Hilbert-Huang Transform
(CRC Press, 2018)
Text en actes de congrés
Accés restringit per política de l'editorialThe majority of bridge condition assessment methods from acceleration data incorporate the use of the Fourier Transform (FT) to obtain or assess damage sensitive features, however the accuracy of the FT’s output for ... -
Development of design specifications for strengthening deteriorated concrete bridge elements using FRP sheets
(2010-05)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper reviews available experimental and theoretical studies on the debonding in RC beams reinforced with CFRP plates. The end debonding failure mode and intermediate crack-induced debonding failure mode were studied. ... -
Dimensiones de la protección de escollera para las pilas tipo de la administración de carreteras
(1999-01)
Article
Accés obertEn este artículo se presenta el estudio experimental de la protección de escollera ante la erosión local en las pilas de puente, teniendo en cuenta el ángulo del flujo respecto del eje de la pila. Los resultados obtenidos ... -
Erosión fluvial y protección en pilas de puente: modelo reducido del puente nuevo de Mora de Ebro
(1994-01)
Article
Accés obertEste trabajo se propone llamar la atención sobre la acción del agua en las pilas de los puentes, origen del fenómeno de la socavación local, responsable de un gran número de fallos de puentes. En primer lugar, se presenta ... -
Estudio experimental sobre la reparación y refuerzo de puentes utilizando fibras sintéticas y pretensado exterior
(Universitat Politècnica de Catalunya, 2003-02-12)
Tesi
Accés obertEn la actualidad, el aparecimiento de nuevos materiales para usos en ingeniería civil ha permitido la aplicación de éstos materiales como materiales de reparación o refuerzo de puentes existentes. Día a día se sabe de la ... -
Evaluación estructural de puentes existentes: técnicas de observabilidad
(Asociación Chilena de Carreteras y Transporte (ACCT), 2017)
Text en actes de congrés
Accés obertCada vez es más importante el parque de puentes y estructuras ya construidas que es necesario mantener y evaluar su estado con el paso del tiempo, o tras haber sufrido alguna situación accidental, como puede ser un sismo. ... -
Evaluation of the Hilbert Huang transformation of transient signals for bridge condition assessment
(CRC Press, 2017)
Text en actes de congrés
Accés restringit per política de l'editorialThe assessment of bridge condition from vibration measurements has generally been determined via the monitoring of modal parameters determined though adaptations of the standard Fast Fourier Transform (FFT) or other ... -
Influencia de la turbulencia en el transporte de sedimentos, con aplicación a la erosión local de pilas y estribos de puente
(Universitat Politècnica de Catalunya, 2008-06-01)
Projecte/Treball Final de Carrera
Accés obert -
Inspection of existing bridges: moving on from condition rating
(International Association for Bridge and Structural Engineers (IABSE), 2019)
Text en actes de congrés
Accés restringit per política de l'editorialIt is widely accepted that safety and serviceability are primary concerns in bridge design. However, for the most of bridges’ service life, these concerns are addressed indirectly by a qualitative measure, defined herein ... -
LIfe-cycle management of bridges based on robustness to deterioration
(2014)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper a framework for assessing the robustness of existing reinforced concrete structures under corrosion is presented. Robustness is defined as a structural property related to the tolerance to damage and is ... -
Life-cycle system performance of bridges: a robustness-based approach
(University of British Columbia (UBC), 2015)
Text en actes de congrés
Accés obertCorrosion in reinforced concrete and steel structures is among the most damaging phenomena to structural safety and therefore one of the most demanding when facing the life-cycle analysis of such structures. However, the ... -
Monitoring of flexural and shear crack pattern in concrete structures by distributed optical fiber
(International Society for Structural Health Monitoring of Intelligent Infrastructure (ISHMII), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialIn the present paper, two methodologies to obtain flexural and shear crack pattern in concrete elements using distributed optical fiber are proposed. The first has been validated through experimental results of tests carried ...