Exploració per autor "Casas Rius, Joan Ramon"
Ara es mostren els items 110-129 de 214
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Management and safety of existing concrete structures via optical fiber distributed sensing
Casas Rius, Joan Ramon; Villalba Herrero, Sergi; Villalba Herrero, Vicenç (CRC Press Taylor & Francis Group, 2014)
Capítol de llibre
Accés restringit per política de l'editorialThe use of Optical Backscatter Reflectometer (OBR) as a distributed fiber optic system to measure strain and detect cracking in concrete structures is investigated. A laboratory experience in a concrete slab is first ... -
Marginal Hilbert spectrum and instantaneous phase difference as total damage indicators in bridges under operational traffic loads
Delgadillo Ayala, Rick Milton; Tenelema Muñoz, Fernando Josué; Casas Rius, Joan Ramon (2021-10)
Article
Accés obertThe challenges and future trends in the development of signal processing tools are being widely used for damage identification in bridges. Therefore, it is important to analyse the vibration signals in order to attain ... -
Mechanical performance based rationalization research on steel-concrete double composite action
Su, Hang; Su, Qingtian; Xu, Chen; Casas Rius, Joan Ramon; Zhou, Guandong (Elsevier, 2022-10)
Article
Accés restringit per política de l'editorialCasting an extra concrete bottom layer to a steel-concrete composite box girder in a hogging moment region can increase sectional stiffness and prevent steel buckling. However, a lower sectional neutral axis may not be ... -
Methodology for development of live load models for refined analysis of short and medium-span highway bridges
Anitori, Giorgio; Casas Rius, Joan Ramon; Ghosn, Michel (2018)
Article
Accés obertThe accuracy of bridge system safety evaluations and reliability assessments obtained through refined structural and finite element analyses depends not only on the accuracy of the structural model itself but also on the ... -
Modeling and testing of a composite steel–concrete joint for hybrid girder bridges
Shangguan, Bing; Su, Qingtian; Casas Rius, Joan Ramon; Su, Hang; Wang, Shengyun; Zhao, Rongxin (Multidisciplinary Digital Publishing Institute (MDPI), 2023-04)
Article
Accés obertA hybrid girder bridge adopts a steel segment at the mid-span of the main span of a continuous concrete girder bridge. The critical point of the hybrid solution is the transition zone, connecting the steel and concrete ... -
Modelling bonding failure effects in deteriorated concrete elements of bridges
Bartolozzi, Mara; Casas Rius, Joan Ramon; Domaneschi, Marco (2022)
Text en actes de congrés
Accés restringit per política de l'editorialNowadays, the seismic study of corroded reinforced concrete elements is a matter of increasing concern, in particular as regards links such as bridges in infrastructural networks. As the first step in an ongoing research, ... -
Modelo de vulnerabilidad sísmica de puentes basado en "conjuntos difusos"
Maldonado, E; Casas Rius, Joan Ramon; Canas Torres, José Antonio (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2000)
Llibre
Accés obertEn este trabajo se presenta un modelo rápido y sencillo de evaluación de la vulnerabilidad sísmica de puentes a escala regional. El modelo fue estructurado de forma que puede ser aplicado especialmente a zonas donde no se ... -
Monitoring of flexural and shear crack pattern in concrete structures by distributed optical fiber
Rodríguez, Gerardo; Casas Rius, Joan Ramon; Villalba Herrero, Sergi (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 ... -
Monitoring of shear cracking in partially prestressed concrete beams by distributed optical fiber sensors
Rodríguez, Gerardo; Casas Rius, Joan Ramon; Villalba Herrero, Sergi; Barrias, Antonio Jose de Sousa (CRC Press Taylor, 2016)
Text en actes de congrés
Accés restringit per política de l'editorialIn the present paper, a novel technique is used to monitor shear crack patterns in Partially Prestressed Concrete (PPC) beams. The proposed technique is based on experimental data obtained in two PPC beams tested in ... -
Monitorización continua-gestión estructural: monitorización del viaducto de la carretera BP-1413 (Cerdanyola del Vallés)
Villalba Herrero, Vicenç; Casas Rius, Joan Ramon (Asociacion Científica del Hormigón Estructural (ACHE), 2011)
Text en actes de congrés
Accés restringit per política de l'editorialSe presenta la aplicación en un viaducto de un sistema de monitorización continúo (en el espacio y tiempo) de fibra óptica (OBR) que suministra datos a tiempo real para poder controlar y conocer el estado/comportamiento ... -
Monitorización estructural con sensores de fibra óptica distribuida: aplicaciones en estructuras de hormigón
Rodríguez Gutiérrez, Gerardo; Casas Rius, Joan Ramon (2019)
Llibre
Accés restringit per política de l'editorialSe presenta el uso de un reflectómetro óptico de retrodispersión denominado sistema OBR (Optical Backscattered Reflectometer por sus siglas en inglés), como una herramienta de monitorización de la salud estructural (MSE) ... -
Monitorización y salud estructural: aplicación de la fibra óptica distribuida (OBR) en estructuras de hormigón
Villalba Herrero, Sergi; Casas Rius, Joan Ramon (Asociacion Científica del Hormigón Estructural (ACHE), 2011)
Text en actes de congrés
Accés restringit per política de l'editorialEl uso de la fibra óptica Optical Backscatter Reflectometer (OBR), es una tecnología de sensores de medición prometedora para la monitorización estructural (SHM) “Structural Health Monitoring”, ya que ofrece la posibilidad ... -
Near-fault isolation of cable-stayed bridges using RNC isolator
Abdel Kareem Moustafa, Mohamed Ismail; Casas Rius, Joan Ramon; Rodellar Benedé, José (2013-11)
Article
Accés restringit per política de l'editorialThis paper investigates the near-fault (NF) seismic performance of a recent isolation system, referred to as Roll-N-Cage (RNC) isolator, considering the cable-stayed Bill Emerson Memorial Bridge in Missouri, USA. Under NF ... -
New structural joint by rebar looping applied to staged box girder bridge construction: static tests
Villalba Herrero, Sergi; Casas Rius, Joan Ramon (2016-04)
Article
Accés obertThis paper shows the design, development and experimental checking of a modified type of structural joint with limited length between concrete segments cast “in-situ”. The design concept is based on the development length ... -
Non-modal vibration-based methods for bridge damage identification
Delgadillo Ayala, Rick Milton; Casas Rius, Joan Ramon (Taylor & Francis, 2020-03)
Article
Accés obertMany methods of damage identification in bridge structures have focused on the use of numerical models, modal parameters or non-destructive damage tests as a means of condition assessment. These techniques can often be ... -
Noninvasive empirical methods of damage identification of bridge structures using vibration data
Moughty, John James; Casas Rius, Joan Ramon (CRC Press, 2018)
Text en actes de congrés
Accés restringit per política de l'editorialMany methods of damage identification in bridge structures have focused on the use of either numerical models, modal parameters or non-destructive damage tests as a means of condition assessment. These techniques can often ... -
On the bonding performance of Distributed Optical Fiber Sensors (DOFS) in structural concrete
Barrias, Antonio; Casas Rius, Joan Ramon; Villalba Herrero, Sergi (CRC Press, 2018)
Text en actes de congrés
Accés restringit per política de l'editorialDistributed optical fiber sensors (DOFS) is one of the most promising and exciting technolo-gies under research to be applied in civil engineering infrastructures structural health monitoring (SHM). There-fore, in this ... -
On the robustness to corrosion in the life cycle assessment of an existing reinforced concrete bridge
Cavaco, E. S.; Neves, Luís A.C; Casas Rius, Joan Ramon (Taylor & Francis, 2018-02)
Article
Accés obertManagement of existing structures has traditionally been based on condition assessment, based on visual inspections, disregarding the susceptibility of different structural types to aging and deterioration. Robustness, as ... -
On the robustness to damage in the Life-Cyle Assessment (LCA) of deteriorating bridges
Cavaco, E. S.; Neves, L. A. C.; Casas Rius, Joan Ramon (CRC Press Taylor & Francis Group, 2014)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, the susceptibility of reinforced concrete structures to corrosion using a robustnessbased framework is presented. Robustness is regarded as a structural property related with the tolerance to damage and it ... -
On the selection of significant variables in a model for the deteriorating process of facades
Serrat Piè, Carles; Gibert Armengol, Vicente; Casas Rius, Joan Ramon; Rapinski, Jacek (Institute of Physics (IOP), 2017)
Article
Accés obertIn previous works the authors of this paper have introduced a predictive system that uses survival analysis techniques for the study of time-to-failure in the facades of a building stock. The approach is population based, ...