DSpace JSPUI

O Guia Técnico n.º 27 concretiza a 4.ª geração do sistema de avaliação da qualidade dos serviços da ERSAR, sendo o resultado de um excelente exemplo de colaboração entre a ERSAR, enquanto entidade reguladora, o Laboratório Nacional de Engenharia Civil e a Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, a quem não podíamos deixar de agradecer, alargando este agradecimento ao universo das entidades gestoras reguladas, cujos contributos prestados durante a consulta ao setor fo...

Climatic conditions, load, fatigue, aging and other factors causes a de-terioration in civil infrastructures. As a consequence, repair and maintenance work actions are needed, being the former considered as more expensive than the latter ones. Indeed, an accurate method for measuring corrosion is a fundamental prerequisite for the detection of damaged areas and for planning an effective re-pairing of concrete maritime structures. In this article a comparation between two surrogate models, Mar...

Propõe-se uma metodologia para caracterizar a variabilidade da evolução ao longo do tempo da retracção e da fluência do betão, que é aplicada ao betão do tabuleiro de quatro pontes observadas pelo LNEC, estabelecendo-se o confronto entre os resultados obtidos nas diversas obras

Este relatório apresenta a Estratégia de Investigação e Inovação adotada pela Comissão Científica Departamental (CCD) do Departamento de Estruturas (DE) do LNEC para o período 2021-2027 (E2I 21-27 DE). A E2I 21-27 DE segue as linhas orientadoras da Estratégia de Investigação e Inovação estabelecida pelo LNEC para esse período e responde ao Plano de Ação delineado para concretizar essa estratégia que solicita o seu aprofundamento nas unidades departamentais. A CCD do DE propõe a implementação...

The project CircularBuild - “Development and Validation of the Concept of Circularity Applied to Modular Prefabricated Construction” aims to investigate solutions based on alternative materials for the panels of the prefabricated modular system, in a perspective of circularity, allowing total reuse of the waste generated, without compromising the building performance, namely in terms of energy efficiency. The promoter was CONCEXEC – Arquitectura, Lda (Portugal), and Laboratório Nacional de E...

Descreve-se sucintamente uma técnica para amostragem linear de descontinuidades em faces expostas de maciços rochosos e referem-se métodos para tratamento dos dados de campo com vista à definição de famílias de descontinuidades e caracterização de uma forma estatística da sua orientação, espaçamento e extensão. Apresentam-se os resultados obtidos para o caso de uma galeria subterrânea no aproveitamento hidroeléctrico do Alto Lindoso. Para as famílias de descontinuidade identificadas apresen...

The B-WaterSmart project, and specifically through WP6, aims at providing an assessment framework to support multi-stakeholder and strategic decision-making towards the transition to a water-smart society that recognizes multiple values and facilitates the active participation of a varied set of actors.

In this document, the Lisbon Living Lab presents the sequence of quarterly exchanges of specification between Task (T) 2.4 and T3.5 that occurred from March 2021 (M7) until February 2023 (M30). The output of subtasks 2.4.2, 2.4.3 and 2.4.4 fed the development of the software tools in T3.5 and its outputs. A short and concrete description of the exchange of specification is provided.

MS16 consists of the first, preliminary version, V0, of the B-WaterSmart Assessment Framework (BWS AF) developed by WP6 in Task 6.2. The MS16 is composed of an excel file and this document. The excel file provides the list of elements forming the framework: the strategic objectives, the assessment criteria and the metrics proposed. This document, after background information about the BWS AF use, scope and development phases, describes the structure and the elements listed in the excel file. ...

O Programa Nacional de Investimentos (PNI 2030) contempla os principais investimentos em infraestruturas e equipamentos a realizar entre 2021 e 2030 em Portugal Continental, em quatro áreas temáticas: “Transportes e Mobilidade”, “Ambiente”, “Energia” e “Regadio”. O PNI 2030 constitui um programa estratégico enquadrador de um importante conjunto de subprogramas e de projetos suscetíveis de terem efeitos significativos no ambiente, estando sujeito a avaliação ambiental nos termos do Decreto-Lei...

In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve w...

Over the last decade, the requests for site hydrogeological studies has been increased in the city of Lisbon, because of the growing occupation of underground space (with basements and tunnels). An underground impermeable structure, cutting the direction of the flow, may generate rising water levels upstream and low levels downstream, which can increase the risk of flooding around the structure. For the hydrogeological impact assessment produced by an underground construction, it is often use...

Neste trabalho, utilizou-se o modelo numérico SWASH para avaliar os volumes galgados em ondas individuais no quebra-mar da Ericeira. Começa-se por definir o valor do coeficiente de Manning a utilizar no talude do quebra-mar, para simular perda de energia provocada pela rugosidade e pela percolação no processo do galgamento, comparando o volume galgado previsto pelo modelo numérico com os valores medidos nos ensaios com modelo físico realizados no LNEC, para um dado estado de agitaçã...

This paper aims to evaluate the impact of ships on fenders during the berthing process. Physical tests and numerical simulations with MOORNAV tool were performed with versions of the GulfStream ship in still water and under a set of different conditions. A comparative analysis was made between outputs of the two models considering specific conditions. The MOORNAV application resulted in a standard deviation from the physical model of 3% to 6% in relation to the maximum force exerted on ...

This volume contains the full papers submitted to the Symposium.

This volume contains the extended abstracts submitted to the Symposium

Soil thermal characterization is an important aspect affecting the performance of Ground Heat Exchangers (GHE) in a Shallow Geothermal Energy (SGE) system application. Thermal conductivity and specific heat capacity are the sole requirements in designing such systems and can be obtained using empirical prediction models, laboratory tests and in situ tests. Laboratory thermal tests can be performed under steady-state or transient conditions. Transient tests have the advantage of being fast and...

This volume contains the contributions of personalities with long careers dedicated to the conservation of Cultural Heritage. These contributions were prepared by invitation of the Organising Committee and reflect the personal perspectives of the authors on topics, events, and achievements relevant for the history of conservation of Cultural Heritage.