Papers
Info
Conservação e restauro de edifícios antigos: soluções multifuncionais compatíveis de revestimento de paredes.
N/A
Year: 2023
Number Pages:
22-25pp..
Author(s): Veiga, M. R.
: Construção Magazine
Editor: Engenho e Média, Lda
Volume:
nº 115.
Keywords: edificios antigos; revestimento de paredes; restauro; Conservação
Info
Cooperativas, coohousing e habitação colaborativa ou participada
No presente artigo abordam-se, sumariamente, algumas matérias ligadas à habitação dirigida para idosos e fragilizados, promovida correntemente por cooperativas de habitação, ou no âmbito dos atuais processos propostos de
Year: 2023
Number Pages:
10p..
Author(s): Baptista Coelho, A.
: Infohabitar
Editor: Associação Portuguesa para a Promoção da Qualidade Habitacional - GHabitar APPQH
Volume:
Ano XIX, n.º 858.
Keywords: Intergeracionalidade; Habitação para idosos; Habitação intergeracional; Habitação
Info
Damage Evolution in Physical Scale Model Tests of a Stretch of the Breakwater of Peniche Harbour.
During physical scale model tests of rubble mound breakwaters, the assessment of the eroded volume of the armour layer subjected to incident sea waves can be determined from consecutive surveys of the surface of the armour layer after each test run. This enables one to assess the damage level of the struc ture by comparing erosion profiles and by the eroded volume between consecutive surveys of the tested section. The present study aimed to evaluate the damage evolu tion of a section of the Peniche harbour west breakwater, whose armour layer is made of tetrapods, A dimensionless damage parameter was computed, based on the eroded volume at the end of each test. The test program consisted of three test series (A, B and C) with different durations and wave conditions sequences, considering the low-water level (water depth of 0.20 m at the toe of the structure) and high-water level (0.24 m) and sea states with peak periods Tp = 1.70 s and Tp = 1.98 s and significant wave heights, Hm0, ranging between 0.12 m and 0.19 m. The model was built and operated according to Froude
Year: 2023
Author(s): Lemos, R.; Fortes, C. J. E. M.; Santos, J. A.; Mendonça, A. C.
Editor: Rilem
Keywords: 3D surface model; Position sensor; Damage evolution; Breakwater
Info
Damage Evolution Prediction during 2D Scale-Model Tests of a Rubble-Mound Breakwater: A Case Study of Ericeira
Melby presents a formula to predict damage evolution in rubble-mound breakwaterswhose armour layer is made of rock, based on the erosion measured in scale-model tests and thecharacteristics of the incident sea waves in such tests. However, this formula is only valid for armourlayers made of rock and for the range of tested sea states. The present work aims to show howthe Melby methodology can be used to establish a similar formula for the armour layer damageevolution in a rubble-mound breakwater where tetrapods are employed. For that, a long-durationtest series is conducted with a 1:50 scale model of the quay section of the Ericeira Harbour breakwater.The eroded volume of the armour layer was measured using a Kinect position sensor. The damageparameter values measured in the experiments are lower than those predicted by the formulationfor rock armour layers. New ap and b coefficients for the Melby formula for the tested armour layerwere established based on the minimum root mean square error between the measured and thepredicted damage. This work shows also that it is possible to assess the damage evolution in scale model tests with rubble-mound breakwaters by computing the eroded volume and subsequently, thedimensionless damage parameter based on the equivalent removed armour units.
Year: 2023
Author(s): Lemos, R.; Santos, J. A.; Fortes, C. J. E. M.
: Modelling
Editor: MDPI
Keywords: Position sensor; Damage evolution; Rubble-mound breakwater
Info
Damage of Infill Masonry Walls due to Vertical Loads in Buildings with Reinforced Concrete Structure
Buildings are subjected to deformations of their reinforced concrete structure due to vertical loadsthat can lead, in certain cases, to the significant cracking of the unreinforced masonry (URM) infill walls,therefore requiring the development of specific knowledge of these types of deformations in order to minimisethem.Aiming the evaluation of buildings with reinforced concrete structures subjected to vertical deformations, themechanical characteristics of their infill masonry walls, as well as of their interface with the supportingconcrete elements, are here analysed. The basic compression behaviour of brick masonry is assessedparticularly through the previous analysis of a vertical compression test of a masonry specimen. Themechanical behaviour characteristics of the constituents (bricks, and mortar joints) are analysed to account fortheir influence on the compression behaviour of masonry infill, aiming particularly for the prevision of theircracking in case of vertical deformations of the supporting reinforced concrete (RC) elements. Based on thatevaluation, the analysis of masonry walls subjected to vertical deformations of their supports is made throughthe assessment of the relevant characteristic behaviour of masonry wall-beam/slab assembly in case of verticalload. A general modelling approach of the behaviour of URM infills and the interaction with their supports isgenerally accessed. Finally, the preventive control of deformations of masonry wall-beam/slab assembly isdiscussed.
Year: 2023
Number Pages:
32-49pp.
Author(s): Miranda Dias, J.
: Journal - WSEAS Transactions on Applied and Theoretical Mechanics (artigo disponível no link: https://wseas.com/journals/articles.php?id=7765)
Editor: WSEAS TRANSACTIONS
Volume:
Vol. 18, Art. #4.
Keywords: Buildings; Vertical loads; Reinforced concrete elements; Masonry infill walls
Info
Damage of infill masonry walls due to vertical loads in buildings with reinforced concrete structure
Buildings are subjected to deformations of their reinforced concrete structure due to vertical loads that can lead, in certain cases, to the significant cracking of the unreinforced masonry (URM) infill walls, therefore requiring the development of specific knowledge of these types of deformations in order to minimise them.Aiming the evaluation of buildings with reinforced concrete structures subjected to vertical deformations, themechanical characteristics of their infill masonry walls, as well as of their interface with the supportingconcrete elements, are hereanalysed. The basic compressionbehaviour of brick masonry is assessedparticularly through theprevious analysis of a vertical compression test of a masonry specimen. Themechanical behaviour characteristics of the constituents (bricks, and mortar joints) are analysed to account for their influence on the compression behaviour of masonry infill, aiming particularly for the prevision of theircracking in case of vertical deformations of the supportingreinforced concrete (RC) elements. Based on thatevaluation, the analysis of masonry walls subjected to vertical deformations of theirsupports is made throughthe assessment of the relevant characteristic behaviour of masonry wall-beam/slab assembly in case of vertical load. A general modelling approach of the behaviour of URM infills and the interaction with their supports is generally accessed. F inally, the preventive control of deformations of masonry wall-beam/slab assembly is discussed
Year: 2023
Number Pages:
32-49pp..
Author(s): Miranda Dias, J.
: WSEAS Transactions on Appled and Theoretical Mechanics
Editor: WSEAS
Volume:
Vol. 18, Art.#4.
Keywords: Buildings; Vertical loads; Reinforced concrete elements; Masonry infill walls
Info
DB-HERITAGE Building Materials Data Aggregation in ARIADNE - challenges and opportunities
DB-HERITAGE provides open and free sharing of wide-ranging technical data on hundreds of samples of building materials from diverse periods, extracted from Portuguese built heritage all over the world. It has been developed to improve know-how for historic building materials and as a basis for developing best practices for built heritage conservation. It incorporates both physical and digital repositories for building material samples and related data, providing tools for the systematic recording of data concerning the history, properties, and performance of materials used in Portuguese built heritage.DB-HERITAGE targets different communities, researchers, and stakeholders involved in the preservation of archaeological and architectural heritage. It provides a systematisation of building assets, within their related environmental, social, and cultural contexts, as well as displaying technical and scientific information on structural elements, built components and their constituent materials. Although the rationale of the wide context sustaining the DB-HERITAGE concept is clear, coordinating communities and reduced time-to-value represent extra requirements for data quality, improved tools, and an efficient management plan.The participation in ARIADNEplus challenged DB-HERITAGE to get the most out of standardised procedures and the FAIR principles, strengthening its data management plan and practices. Data processing has been improved by deploying a common ontology and further developing standards, shared semantics, and identifiers. Updated protocols for data sharing and detailed information on provenance have also been developed to enhance data reuse.This article presents an overview of the aggregation process of DB-HERITAGE data into ARIADNEplus. It includes a summary of DB-HERITAGE's strengths and of the challenges faced within the scope of the aggregation process, with examples of some of DB-HERITAGE's major outputs. Additionally, it considers the benefits and opportunities provided by participation in ARIADNEplus.
Year: 2023
Author(s): Santos Silva, A.; Correia, M. J.
: Internet Archaeology
Editor: UY
Volume:
64.
Keywords: FAIR data; building materials; heritage assets conservation; heritage safeguard
Info
Decisões estratégicas no ciclo de vida dos ativos construídos baseadas em informação técnico-funcional e financeira
As funções financeiras e as funções relacionadas com o desempenho técnico e funcional (não financeiras) estão incorporadas nas atividades de gestão do ciclo de vida de qualquer dos ativos construídos. Essas funções fornecem informação relevante para o estabelecimento de estratégias de operação e de manutenção, bem como para o processo de tomada de decisão relacionado com investimentos a longo prazo em reparações, substituições e reabilitações. O objetivo deste artigo é demonstrar os efeitos da utilização destes dois tipos de funções nas decisões estratégicas de longo prazo da gestão de ativos. Esta demonstração é feita por recurso a uma análise de informação financeira, técnica e funcional de portefólios de edifícios. Para tal, apresenta-se um caso de estudo de dois edifícios escolares públicos construídos, respetivamente nas décadas de 40 e 80 do século passado, nos quais foram realizadas intervenções profundas de reabilitação no ano de 2010. Consideram-se e comparam-se os efeitos das funções utilizadas para apoiar o processo de tomada de decisão nos períodos que antecederam e sucederam essas intervenções. Os resultados dos cálculos de taxas de depreciação funcional equivalente e financeiras, mostram um desalinhamento entre funcões financeiras e não financeiras e realçam a importância de que se promova esse alinhamento, tendo em vista uma otimização da gestão do ciclo de vida destes edifícios.
Year: 2023
Number Pages:
43-55pp..
Author(s): Salvado, A.; Almeida, N.; Vale e Azevedo, A.
: RAE
Editor: Ponteditora
Volume:
Vol. 1, N.º 1.
Keywords: Custo do Ciclo de Vida; Taxas de depreciação; Funções financeiras; Funções técnicas e funcionais; Gestão de edifícios
Info
Determinants of shared e-scooters usage in the city of Braga: results from a mobility survey and trip data analysis
Shared mobility services can lead to a transformative impact on many cities around the world by enhancing transport accessibility, and modal shift. Therefore, the present research uses a mobility survey and data analysis from e-scooter trips in Braga, Portugal to acknowledge the determinants of shared e-scooter usage in order to understand how cities can continue promoting a modal shift from cars to more sustainable mobility options. The survey was conducted regarding that heavy e-scooter traffic is estimated to occur in university campus areas, while the trip data analyses compare e-scooter displacement patterns in 2019 and 2021. The results show that e-scooters are a rising actor to enable people's displacement, but improvements to the infrastructure offered for this mode of transport (e.g., parking spots, and traffic calming) are crucial to enable a safe and comfortable journey.
Year: 2023
Number Pages:
4002-4009pp..
Author(s): Dias, G.; Ribeiro , P; Arsénio, E.
: Transportation Research Procedia
Editor: Elsevier
Volume:
72.
Keywords: E-scooter mobility survey; Determinants of e-scooter usage; Shared micromobility; Shared e-scooters
Info
Determination of Wave Run-Up Through the TimesTack Methology and hrough a Resistive Wave Gauge. a Comparative Analysis
The objective of this work is the comparison of two methodologies used for run-up measurements in a two-dimensional physical model, which represented the protection breakwaters of the Peniche and Ericeira
Year: 2023
Author(s): Lemos, R.; Fontes, R.; Fortes, C. J. E. M.; Andriolo, U.; Rito, J.
Editor: Reterm
Keywords: Breakwater; Physical model; RimeStack; Video analysis; Run-up
|