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Ara es mostren els items 101-120 de 210

    • Life cycle cost management of concrete structures 

      Matos, Jose C.; Solgaard, Anders; Linneberg, Poul; Casas Rius, Joan Ramon (2018)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Tools, guidelines and standards for assessment of Life Cycle Cost (LCC) of built environment e.g. buildings, infrastructure assets etc. have gained impact over the past years. Owner and operator application of tools, ...

    • Life cycle cost, as a tool for decision making on concrete infrastructures 

      Matos, Jose C.; Strauss, Alfred; Santos, Carlos; Casas Rius, Joan Ramon (2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The use of Life Cycle Cost (LCC) tools in civil engineering is increasing, due to the need of infrastructure owners and operators to guarantee their assets maximum performance with an optimized budget. By considering these ...

    • LIfe-cycle management of bridges based on robustness to deterioration 

      Casas Rius, Joan Ramon (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In 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 

      Cavaco, E. S.; Casas Rius, Joan Ramon; Neves, Luís A.C (University of British Columbia (UBC), 2015)
      Text en actes de congrés
      Accés obert
      Corrosion 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 ...

    • Live load model for refined analysis of short and medium-span bridge systems 

      Anitori, Giorgio; Casas Rius, Joan Ramon; Ghosn, Michel (CRC Press Taylor, 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The accuracy of bridge system safety evaluations and reliability assessments obtained through refined structural analysis procedures depends on the proper modeling of traffic load effects. In fact, traffic load intensities ...

    • Long-distance and continuous horizontal displacement sensor of deep excavation based on distributed optical fiber sensing 

      Li, Shengtao; Sun, Yangyang; Casas Rius, Joan Ramon; Chen, Xudong; Wang, Hao; Zeng, Jie; Ma, Linjian (2023-10)
      Article
      Accés obert
      A long-distance displacement and continuous sensor based on distributed optical fiber sensing (DOFS) with the ability to measure the horizontal displacement of deep excavation was investigated herein. The feasibility and ...

    • Long-term reliability assessment of OBR based DOFS on reinforced concrete elements 

      Barrias, Antonio Jose de Sousa; Casas Rius, Joan Ramon; Villalba Herrero, Sergi (International Association for Structural Control and Monitoring (IASCM), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The authors conducted a laboratory experiment where two reinforced concrete beams were instrumented with a Distributed Optical Fiber Sensors that were adhered to allow the measuring of strain on four different longitudinal ...

    • 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'editorial
      The 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 obert
      The 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'editorial
      Casting 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 obert
      The 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 obert
      A 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'editorial
      Nowadays, 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 obert
      En 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'editorial
      In 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'editorial
      In 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'editorial
      Se 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'editorial
      Se 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'editorial
      El 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'editorial
      This 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 ...