Exploració per autor "Drougkas, Anastasios"Més informacióMés informació

Ara es mostren els items 21-40 de 52

    • Investigation of the masonry pillars of a modernist building of Hospital de sant Pau, Barcelona 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent; Alegre Heitzmann, Vicente (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The methodology employed and the results obtained from an experimental campaign to determine the compressive strength of a masonry pillar extracted from an early 20th century building are presented. The samples of the ...

    • Investigation of the use of iron in construction from antiquity to the technical revolution 

      Drougkas, Anastasios (Universitat Politècnica de Catalunya, 2009-07)
      Projecte Final de Màster Oficial
      Accés obert
      En el contexto de la presente disertación, el uso del hierro en construcciones ha sido investigado. Mediante el estudio de antiguos y modernos documentos disponibles sobre el tema, este trabajo examina prácticas y conceptos ...

    • Laser scanning, monitoring and analysis of a reconstructed masonry vault 

      Drougkas, Anastasios; Bassier, Maarten; Vergauwen, Maarten; Verstrynge, Els (CRC Press, 2019)
      Text en actes de congrés
      Accés obert
      Reconstruction of historic building elements is often necessary in adaptive re-use projects. Optimally this is performed with as much original material as can be sal- vaged. However, the use of hydraulic lime mortars ...

    • Macro scale material characterisation in support of meso scale modelling of masonry under uniaxial in-plane loading 

      Drougkas, Anastasios; Bejarano Urrego, Leidy; Van Roy, Nathalie; Verstrynge, Els (InderScience Publishers, 2020)
      Article
      Accés obert
      The amount of detailed experimental data on the mechanical properties of brick masonry in the literature is limited regarding the orthotropic strength and fracture energy. A combined experimental/numerical methodology is ...

    • Macro-modelling of orthotropic damage in masonry: combining micro-mechanics and continuum FE analysis 

      Drougkas, Anastasios (Elsevier, 2022-11)
      Article
      Accés obert
      Due to the complex interaction of its constituent materials, arising from their brittleness and staggered geometric arrangement, masonry as a composite material is often characterised by pronounced orthotropy, both in ...

    • Masonry material characterization methodology for micro-modeling 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent; Alegre Heitzmann, Vicente (Universidade do Minho, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Numerical and analytical micro-modeling of masonry structures requires knowledge of several elasticity and strength parameters of the constituent materials of the composite. Furthermore, when dealing with specimens produced ...

    • Material characterization and micro-modeling of a historic brick masonry pillar 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (Taylor & Francis, 2016-10)
      Article
      Accés restringit per política de l'editorial
      A masonry pillar composed of solid clay bricks, cement mortar and infill is extracted from a historical structure and tested in concentric compression. It is subjected to cyclic and monotonic loads up to compressive ...

    • Mechanical and durability testing and XCT imaging of a lime-based micro-scale modified smart interve 

      Drougkas, Anastasios; Sarhosis, Vasilis; Macente, Alice; Basheer, Muhammed; D'Alessandro, Antonella; Ubertini, Filippo (2023-11-13)
      Article
      Accés restringit per política de l'editorial
      Intervention materials for historic structures need to be mechanically and physically compatible with the in-situ material for maintaining durability. For historic masonry structures, joint repointing is ideally executed ...

    • Micro-mechanical homogenisation of three-leaf masonry walls under compression 

      Drougkas, Anastasios; Sarhosis, Vasilis (2021-10)
      Article
      Accés obert
      Three-leaf masonry panels are typically composed of external leaves of irregularly bonded units and a rouble infill. The complexity of the response of these structures to mechanical loading arises from: a) the interaction ...

    • Micro-mechanical modeling of masonry: parametric study 

      Roca Fabregat, Pedro; Molins i Borrell, Climent; Drougkas, Anastasios (CRC Press, 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Masonry structures, usually being composed of a repeating geometric pattern, lend themselves well to analysis using periodic unit cells. Based on stress and strain equilibriums and rational assumptions concerning the ...

    • Micro-modeling of stack bond masonry in compression using a plasticity law 

      Drougkas, Anastasios; Molins i Borrell, Climent; Roca Fabregat, Pedro (CIMNE, 2013)
      Text en actes de congrés
      Accés obert
      A set of experimental tests to determine the compressive strength of masonry stack prisms has been numerically simulated using a combined plasticity-smeared crack constitutive law employed in three-dimensional analysis. ...

    • Micro-modeling of stack bond masonry in compression using a plasticity law 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins, Climent (CIMNE, 2013)
      Text en actes de congrés
      Accés obert
      A set of experimental tests to determine the compressive strength of masonry stack prisms has been numerically simulated using a combined plasticity-smeared crack constitutive law employed in three-dimensional analysis.

    • Micromechanical homogenisation of steel bars in reinforced concrete for damage analysis 

      Drougkas, Anastasios; Sarhosis, Vasilis; Thermou, Georgia (Elsevier, 2022-06)
      Article
      Accés obert
      A homogenisation scheme based on inclusion modelling is coupled with constitutive laws for damage and implemented in a finite element model for the simulation of concrete and reinforcement bar damage in reinforced concrete ...

    • Nonlinear micro-mechanical analysis of masonry periodic unit cells 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (2016-02)
      Article
      Accés obert
      A model for the analysis of masonry periodic unit cells of several wall and pillar geometrical typologies is proposed. It is based on a micro-mechanical analysis of the masonry cell, which has been divided into cuboids, ...

    • Numerical Analysis of a Masonry Infill (Divided Into Smaller Wallettes) Under in-Plane Cyclic Tests 

      Drougkas, Anastasios; Adami, Chrissy-Elpida; Vintzileou, Elizabeth; Palieraki, Vassiliki (2016)
      Text en actes de congrés
      Accés obert
      asonry infill in reinforced concrete frames has been recognised as being a strong factor influ- encing the seismic behaviour of buildings. Therefore, the development of innovative infill systems, coupled with the rigorous ...

    • Numerical analysis of settlement-induced damage to a masonry church nave wall 

      Bejarano Urrego, Leidy; Verstrynge, Els; Drougkas, Anastasios; Giardina, Giorgia; Bassier, Maarten; Vergauwen, Maarten; Van Balen, Koen (2018)
      Text en actes de congrés
      Accés obert
      Differential soil settlements can induce structural damage to heritage buildings, causing not only economic but also cultural value losses. In 1963, the Saint Jacob’s church in Leuven was permanently closed to the public ...

    • Numerical analysis of the out-of-plane response of two new systems for masonry infills 

      Drougkas, Anastasios; Adami, Chrissy-Elpida; Vintzileou, Elizabeth; Palieraki, Vassiliki (2016)
      Text en actes de congrés
      Accés obert
      he out-of-plane behaviour of two new systems for infill walls, made of clay masonry units, is numerically investigated. The two systems were developed within the INSYSME project. In the first system the enclosure wall ...

    • Numerical micro-modeling simulation of masonry in compression 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (Universidade do Minho, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Micro-modeling techniques for the simulation of masonry are a valuable tool, when combined with nonlinear constitutive laws, for the investigation of the behavior of structural masonry. Through the simulation of the behavior ...

    • Numerical modeling of a church nave wall subjected to differential settlements: soil-structure interaction, time-dependence and sensitivity analysis 

      Drougkas, Anastasios; Verstrynge, Els; Szekér, Pepijn; Heirman, Gert; Bejarano Urrego, Leidy; Giardina, Giorgia; Van Balen, Koen (2019-04-14)
      Article
      Accés obert
      Historic masonry structures are particularly sensitive to differential soil settlements. These settlements may be caused by deformable soil, shallow or inadequate foundation, structural additions in the building and changes ...

    • Numerical modelling of masonry shear walls failure mechanisms 

      Drougkas, Anastasios; Pelà, Luca; Roca Fabregat, Pedro (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents an investigation on the ability of two alternative FE-based numerical methods to simulate the in-plane strength and collapse of brick masonry shear walls. The methods considered consist of a meso-model, ...