Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Munster Technological University (91)
- Technological University Dublin (27)
- Portland State University (6)
- Purdue University (6)
- University of Arkansas, Fayetteville (5)
-
- University of Nebraska - Lincoln (5)
- City University of New York (CUNY) (3)
- Louisiana State University (3)
- University of Nevada, Las Vegas (3)
- American University in Cairo (2)
- The University of Akron (2)
- University of Texas at Tyler (2)
- Association of Arab Universities (1)
- Augustana College (1)
- Beirut Arab University (1)
- California Polytechnic State University, San Luis Obispo (1)
- Claremont Colleges (1)
- Cleveland State University (1)
- Dartmouth College (1)
- Embry-Riddle Aeronautical University (1)
- Marshall University (1)
- Merrimack College (1)
- Michigan Technological University (1)
- Missouri University of Science and Technology (1)
- New Jersey Institute of Technology (1)
- Rhode Island School of Design (1)
- Rowan University (1)
- The British University in Egypt (1)
- The University of San Francisco (1)
- Universitas Indonesia (1)
- Keyword
-
- Sustainability (8)
- Construction (6)
- Architecture (5)
- Engineering (5)
- Insulation (5)
-
- BIM (4)
- Building Information Modelling (4)
- Built environment (4)
- Concrete (4)
- Digitisation (4)
- Environmental (4)
- Structural (4)
- Civil engineering (3)
- Geotechnical (3)
- Infrastructure (3)
- Retrofit (3)
- BICP (2)
- Bridges (2)
- Climate change (2)
- Computational cost (2)
- Detached eddy simulation (DES) (2)
- Environment (2)
- Generative Design (2)
- Global (2)
- Heat transfer (2)
- Horizontal homogeneity (2)
- Ireland (2)
- Large-eddy simulation (LES) (2)
- Lateral loads (2)
- Piling (Civil engineering) (2)
- Publication Year
- Publication
-
- Civil Engineering Research in Ireland 2020 (89)
- Articles (8)
- Capstone Reports (6)
- Civil and Environmental Engineering Faculty Publications and Presentations (5)
- Honors Program: Senior Projects (Public) (5)
-
- Reports (5)
- Conference papers (4)
- Faculty Publications (3)
- Graduate Theses and Dissertations (3)
- Publications and Research (3)
- Civil Engineering Theses (2)
- Civil Engineering Undergraduate Honors Theses (2)
- Datasets (2)
- Purdue Road School (2)
- Theses and Dissertations (2)
- Williams Honors College, Honors Research Projects (2)
- Architectural Engineering (1)
- BAU Journal - Science and Technology (1)
- CSID Journal of Infrastructure Development (1)
- Celebration of Learning (1)
- Civil Engineering ETDs (1)
- Civil Engineering Student Work (1)
- Civil and Environmental Engineering Faculty Publications (1)
- Civil and Environmental Engineering and Construction Faculty Research (1)
- Civil and Environmental Engineering and Engineering Mechanics Faculty Publications (1)
- Civil, Architectural and Environmental Engineering Faculty Research & Creative Works (1)
- College of Engineering Summer Undergraduate Research Program (1)
- Computer Information Technology Faculty Publications (1)
- Conference Papers (1)
- Discovery Undergraduate Interdisciplinary Research Internship (1)
- Publication Type
- File Type
Articles 31 - 60 of 179
Full-Text Articles in Structural Engineering
Comparison Of The Resistance Of Belitic Calcium Sulfoaluminate Cement And Portland Cement To Sulfate Attack And Sulfuric Acid, Rilye Dillard
Comparison Of The Resistance Of Belitic Calcium Sulfoaluminate Cement And Portland Cement To Sulfate Attack And Sulfuric Acid, Rilye Dillard
Graduate Theses and Dissertations
Microbially induced corrosion (MIC) is a fairly common concrete deterioration mechanism with many negative effects. MIC is a complex chemical and biological process that occurs in sewage systems and is nearly impossible to replicate in a laboratory setting. For this study, sulfate and sulfuric acid attack on concrete were studied to mimic two stages of the MIC process. The ASTM C1012, Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution and a modified ASTM C1012 accelerated method were used to compare the sulfate resistance of belitic calcium sulfoaluminate (BCSA) cement, portland cement (PC), and PC-fly …
On The Computational Efficiency Of Les And Hybrid Rans-Les Models In Building Aerodynamics, Aly Mousaad Aly, Faiaz Khaled
On The Computational Efficiency Of Les And Hybrid Rans-Les Models In Building Aerodynamics, Aly Mousaad Aly, Faiaz Khaled
Faculty Publications
Large-eddy simulation (LES) has proven to offer superior accuracy in regards to predicting surface pressures compared to the Reynolds-averaged Navier Stokes (RANS) models. However, the primary impediment is the high computational cost associated with LES. The authors attempt to investigate the computational cost and accuracy by employing different sub-grid scale (SGS) models in LES and hybrid RANS-LES models. One of the prerequisites of accurate pressure estimations is to ensure a horizontally homogeneous empty computational domain. This study aims to compare the computational competence qualitatively and quantitatively using an empty domain in regards to the ability to maintain horizontal homogeneity. The …
Analysis Of Shear-Strength In Weathered Shale Strata Along A Highway Slope Failure Site In Northwest Arkansas, Olivia Overton
Analysis Of Shear-Strength In Weathered Shale Strata Along A Highway Slope Failure Site In Northwest Arkansas, Olivia Overton
Civil Engineering Undergraduate Honors Theses
Slope failures cost millions of dollars per year to repair and can be deadly. Accurate modeling of slope conditions, including soil parameters, water table locations, and depth to bedrock, are essential to determining the overall stability of a slope. This project is a continuation of the work completed in 2019 by a former University of Arkansas researcher, Vanessa LeBow. LeBow RocScience used Slide2 modeling software to model two highway embankment slopes in Northwest Arkansas that experienced slope movement to determine whether increased use of geophysical data could increase the accuracy of slope stability models. A parametric study of shear strengths …
On The Computational Efficiency Of Les And Hybrid Rans-Les Models In Building Aerodynamics, Faiaz Khaled, Aly Mousaad Aly
On The Computational Efficiency Of Les And Hybrid Rans-Les Models In Building Aerodynamics, Faiaz Khaled, Aly Mousaad Aly
Faculty Publications
No abstract provided.
Climate Resilience: Examination Of Revised Heat Transfer Models In The Enhanced Integrated Climatic Model For Pavement Temperature Prediction, Austin Michael Jarrell
Climate Resilience: Examination Of Revised Heat Transfer Models In The Enhanced Integrated Climatic Model For Pavement Temperature Prediction, Austin Michael Jarrell
Theses, Dissertations and Capstones
The Mechanistic Empirical Pavement Design Guide (MEPDG) is commonly referenced as the state-of-the-practice for the analysis and design of new and rehabilitated pavement assets. The Enhanced Integrated Climatic Model (EICM) incorporated within the MEPDG is a well-recognized and standardized method for estimating temperature profiles in pavements; temperature is a portion of the climate inputs in the MEPDG. Many have already begun to convert atmospheric temperature predictions from externally based climate models into the MEPDG to create robust designs for climate change. As pavement designers and researchers seek robust solutions while formulating resilient pavement designs, it is likely that the EICM …
Opportunities In The Irish Reinforced Concrete Industry For Lean And Bim Adoption, Bim Tudublin, Kieran Mcconnell
Opportunities In The Irish Reinforced Concrete Industry For Lean And Bim Adoption, Bim Tudublin, Kieran Mcconnell
Capstone Reports
The Irish Reinforced Concrete (RC) sector has yet to realise the full potential of Building Information Modelling (BIM) and Lean construction. The positive impacts and benefits of both BIM and Lean in the wider Architecture, Engineering and Construction sector are widely recognised; many of these are transferable to the RC sector, but there is limited research and knowledge on practical transference, uses and advantages. This research aims to fill some of the existing knowledge gaps by examining BIM and Lean adoption and awareness in the Irish RC sector across sub-sectors, professions, and organisational levels, and by exploring opportunities for increasing …
A Critical Examination Of Visual Programming And Generative Design For The Compliance Checking Of Open Plan Office Layouts Against Hse Guidelines Post Covid-19., Bim Tudublin, Ronan Byrne
A Critical Examination Of Visual Programming And Generative Design For The Compliance Checking Of Open Plan Office Layouts Against Hse Guidelines Post Covid-19., Bim Tudublin, Ronan Byrne
Capstone Reports
The purpose of this study is to explore the feasibility of Visual Programming (VP) and Generative Design (GD) in assisting employers review open plan office layouts against Ireland’s HSE guidelines implemented in May 2020 in response to Covid-19. The pandemic has affected all areas of life with workplace standards requiring a complete overhaul. This study will attempt to ascertain compliance with natural ventilation and social distancing requirements through the completion of an experimental research study, utilising Computational Design (CD) tools. A GD study will be undertaken to provide the designer with numerous office layout design solutions to evaluate and evolve. …
Should Acoustic Simulation Technology Be Utilised In Architectural Practice? Does It Have The Potential For Bim Integration?, Bim Tudublin, Keith Harvey
Should Acoustic Simulation Technology Be Utilised In Architectural Practice? Does It Have The Potential For Bim Integration?, Bim Tudublin, Keith Harvey
Capstone Reports
The research presented in this paper, firstly, aims to convey the importance of our acoustic environment through focusing on the effects of undesirable acoustic conditions on cognitive abilities in spaces where cognitive performance is of the utmost concern, our learning environments. Secondly, it aims to investigate current state-of-the-art acoustic simulation methods, available platforms, and their levels of interoperability with architectural BIM authoring software. Structured interviews were carried out with 7 Irish architects and architectural technologists to determine if a disconnection between architectural design and acoustic performance exists and to identify the advantages and disadvantages of current workflows for acoustic performance …
To What Extent Can Lean Construction Processes And Principles Be Utilised In The Design Stage Of A Bim Project In The Irish Design And Construction Industry, Bim Tudublin, Barry Sheramn
To What Extent Can Lean Construction Processes And Principles Be Utilised In The Design Stage Of A Bim Project In The Irish Design And Construction Industry, Bim Tudublin, Barry Sheramn
Capstone Reports
Although different in many ways, Building Information Modelling (BIM) and Lean Construction are two processes that are having a significant impact on the Design & Construction Industry. In recent years, the Irish AECO industry has seen a tenfold increase across numerous construction disciplines with the adoption of new workflows and processes centred around both BIM and Lean methodologies. Existing literature identifies a strong synergistic relationship between the two processes and highlights the opportunity for Lean processes and principles to be implemented into the design stage workflow. This paper investigated existing literature relating to several lean processes currently implemented in the …
Optimisation Of Retrofit Wall Insulation: An Irish Case Study, Rakshit D. Muddu, D M. Gowda, Anthony James Robinson, Aimee Byrne
Optimisation Of Retrofit Wall Insulation: An Irish Case Study, Rakshit D. Muddu, D M. Gowda, Anthony James Robinson, Aimee Byrne
Articles
Ireland has one of the highest rates of emissions per capita in the world and its residential sector is responsible for approximately 10% of total national CO2 emissions. Therefore, reducing the CO2 emissions in this sector will play a decisive role in achieving EU targets of reducing emissions by 40% by 2030. To better inform decisions regarding retrofit of the existing building stock, this study proposes Optimum Insulation Thicknesses (OIT) for typical walls in 25 regions in Ireland. The calculation of OIT includes annual heat energy expenditure, CO2 emissions, and material payback period. The approach taken is based on Heating …
Expanding The Concept Of Comprehensive Area Ratio Parameter To The South-Central States Towards Simplifying The Structural Evaluation Of Flexible Pavements At The Network Level, Nitish R. Bastola
Civil Engineering Theses
The surface deflection bowl data collected through Non-Destructive Testing (NDT) has been widely utilized by various Department of Transportation (DOTs) in the South-Central States and other places. The primary purpose of using deflection-based NDTs in network-level assessment is to identify a weak pavement section that requires further analysis at the project level. The falling weight deflectometer (FWD) test is one of the common NDT based tests utilized by highway agencies in assessing the performance of the flexible pavement. However, a robust method to evaluate pavement sections utilizing FWD data from all the sensors are seldom developed. There is always a …
Laboratory Testing And Mechanistic Analysis Of Treated Subgrade Soils, Hari Kumar Reddy Yarrapureddi
Laboratory Testing And Mechanistic Analysis Of Treated Subgrade Soils, Hari Kumar Reddy Yarrapureddi
Civil Engineering Theses
Calcium-based stabilizing agents such as cement and lime have been extensively used to improve the engineering properties of base and subgrade layers of pavement systems. Recently, polymers and chemical stabilizers have become popular due to cost efficiency, ease of application, and fast curing times. In this study, California Bearing Ratio (CBR) values of polymer and chemical treated soils were compared with the CBR values of soils treated with conventional stabilizers. Parametric sensitivity analyses was carried out on key parameters including the type of subgrade soil, stabilizing agent, stabilizing agent treatment levels, and moisture conditioning. Additionally, numerical analyses was performed to …
Moisture Monitoring Of A Clt Structure In A Southern Climate, Elizabeth Poblete
Moisture Monitoring Of A Clt Structure In A Southern Climate, Elizabeth Poblete
Graduate Theses and Dissertations
Understanding of moisture behavior in cross laminated timber (CLT) is critical to the widespread use of CLT in construction in the United States. Currently, very little data exists on the long-term impact of moisture on CLT. The objective of this research is to collect data regarding the long-term moisture variation in the CLT panel at the University of Arkansas Adohi Hall residence hall. The climate of Northwest Arkansas is different from previously monitored buildings, as they were in the Pacific Northwest. Comparatively, Northwest Arkansas has a warmer climate with higher average annual precipitation. Waterproofing efforts are usually employed to prevent …
St. Mary And St. Anne Cathedral, Cork: An Optimum Heating Solution For Heritage Buildings?, Christopher Shiell, Roger P. West
St. Mary And St. Anne Cathedral, Cork: An Optimum Heating Solution For Heritage Buildings?, Christopher Shiell, Roger P. West
Civil Engineering Research in Ireland 2020
Cathedrals and most churches are characterised by having large internal, undivided spaces and permeable building envelopes. They are often used little, intermittently, but predictably and, in spite of the fact that they are unique in still being largely used for the purpose for which they were built many centuries ago, they are now often used for additional purposes, for which they were never designed. These uses include concerts, graduation ceremonies, filming and a host of other uses all of which require a level of thermal comfort not envisaged by the original builders. Research was undertaken by the authors into the …
Challenges And Opportunities To Deep Retrofitting Of Traditional Fabric Buildings To Achieve Nearly Zero Energy Building (Nzeb), Maria Lopez Zambrano, Paul Kenny, Jamie Goggins
Challenges And Opportunities To Deep Retrofitting Of Traditional Fabric Buildings To Achieve Nearly Zero Energy Building (Nzeb), Maria Lopez Zambrano, Paul Kenny, Jamie Goggins
Civil Engineering Research in Ireland 2020
Many of our traditional buildings are disappearing or in danger of being under utilised because they are not comfortable for modern day living and do not meet our present day needs. If a building does not have a use, inevitably it deteriorates and eventually becomes a ruin or gets demolished. It is important to retrofit these buildings, which are part of our identity and can be powerful tourist attractions even though most of them are not listed. Some owners want to apply for retrofitting schemes and grants, but they are rejected because there are no standard solutions to achieve low …
Teaching Of Structural Analysis Into The Future, Dermot O'Dwyer
Teaching Of Structural Analysis Into The Future, Dermot O'Dwyer
Civil Engineering Research in Ireland 2020
The engineering curriculum has always been full. In the past civil and structural engineers studied a wide variety of technical subjects within the broad field of engineering science and spent many hours working on design projects. Modern engineering curricula try to cover these areas while also dedicating more time to structured group-work, report writing and communication skills. Although students spend longer in college the number and range of technical fields that students must master is considerably larger than in the past. As a result the time available to any one topic area has reduced. At the same time the work …
Can Deap Help Us To Predict The Energy Demand And Indoor Temperature Of Homes Before And After Renovation? A Case Study From Dublin, Paul Moran, Jamie Goggins
Can Deap Help Us To Predict The Energy Demand And Indoor Temperature Of Homes Before And After Renovation? A Case Study From Dublin, Paul Moran, Jamie Goggins
Civil Engineering Research in Ireland 2020
Improving the energy efficiency of buildings via retrofitting is seen as one of the key mitigation measures to reducing the energy demand and carbon emissions of the built environment in Ireland. However, while energy efficiency retrofits for buildings are effective in theory, the energy savings estimated by statistical or engineering models can often be inaccurate. The Domestic Energy Assessment Procedure (DEAP) is the standard assessment procedure used for assessing the energy performance standard of residential buildings in Ireland. This paper examines the gas energy demand for space and water heating and the internal temperature profiles in contrast to DEAP estimates …
Operational And Embodied Energy Analysis Of 8 Single-Occupant Dwellings Retrofit To Nzeb Standard, Richard O'Hegarty, Shane Colclough, Oliver Kinnane, Donal Lennon, Etienne Rieux
Operational And Embodied Energy Analysis Of 8 Single-Occupant Dwellings Retrofit To Nzeb Standard, Richard O'Hegarty, Shane Colclough, Oliver Kinnane, Donal Lennon, Etienne Rieux
Civil Engineering Research in Ireland 2020
In line with the Energy Performance of Buildings Directive, Irish dwellings are being retrofit to near Zero Energy Building (nZEB) standards - with a number of the deep energy retrofits classified as A-rated. As a result of the low operational energy, the embodied energy share of an nZEB's life cycle energy is significantly increased. Therefore, to obtain a holistic picture of the change in energy profile of buildings, the embodied energy of the material added to achieve that low performance should also be taken into account. This paper presents results from a case study of 8 single-occupant terrace bungalows retrofit …
Art In Engineering: Evoking A Creative Response From Engineering Students And More, Jamie Goggins, Marta Fuente, Eamonn Madden
Art In Engineering: Evoking A Creative Response From Engineering Students And More, Jamie Goggins, Marta Fuente, Eamonn Madden
Civil Engineering Research in Ireland 2020
The concept of creativity being only associated with writers, painters, and artistic professions is outdated. The future engineer must embrace maths, art and creativity to unlock innovative solutions. Traditional engineering courses with an emphasis predominately on maths and science can produce graduates who are constrained in developing design solutions without creativity to unlock innovative solutions. This paper describes a short course introduced in the School of Engineering at NUIGalway in 2018 to expose students to creative thinking research and principles and engage in various forms of creative expression (photography, painting and essay writing) to articulate their response to a set …
The Broader Development Of The Student Engineer Through Industry Based Experiential Learning, Donogh Coleman, Ted Mckenna, Mary Moloney
The Broader Development Of The Student Engineer Through Industry Based Experiential Learning, Donogh Coleman, Ted Mckenna, Mary Moloney
Civil Engineering Research in Ireland 2020
The global drive for industry-aware and industry-ready engineering graduates, has led to the development and integration of experiential learning through work placements. Industry is looking to recruit graduates with not just the requisite technical engineering skills, but also graduates with inter alia high levels of teamwork and communications skills. This has been recognised by CIT with the integration of work placement in most of its undergraduate programmes. This paper provides an overview of the student placement process in the Department of Civil, Structural and Environmental Engineering at CIT, includes the work placement alternative which was implemented due to the COVID-19 …
Long-Run Traffic Simulations For Multi-Lane Road Bridges, Róisín Donnelly, Lorcan Connolly, Ilaria Bernardini
Long-Run Traffic Simulations For Multi-Lane Road Bridges, Róisín Donnelly, Lorcan Connolly, Ilaria Bernardini
Civil Engineering Research in Ireland 2020
The maintenance and repair of ageing bridges is a concern for road infrastructure managers. This issue is amplified by the increasing weights and frequency of travel of freight vehicles in recent times. In order to accurately assess the risk of damage for road bridges, it is essential to have knowledge of both historical and current bridge loading. When available, site-specific Weigh-in-Motion (WIM) data can be effective in creating representative load models for a structure. However, for cases where WIM data is not available and in cases where future damage must be predicted, it is necessary to simulate appropriate data using …
Repair & Rehabilitation Of Daly's (Shakey) Bridge, Cork City, Michael Minehane, John Gamble
Repair & Rehabilitation Of Daly's (Shakey) Bridge, Cork City, Michael Minehane, John Gamble
Civil Engineering Research in Ireland 2020
This paper describes the rehabilitation of (Shakey) Bridge, an existing single-span suspension bridge crossing the northern channel of the River Lee in Cork City. The bridge was opened in 1927 to replace an earlier ferry crossing at the same location. Daly’s bridge is included on the Record of Protected Structures and the National Inventory of Architectural Heritage. It remains the only suspension bridge in Cork City and is the only surviving bridge of its kind in Ireland. It is considered to be a significant contributor to the architectural heritage of the city. This case study describes the project development including …
Reinforcement Of Timber Elements In Compression Perpendicular To The Grain Using Compressed Wood Dowels, Michael Conway, Conan O'Ceallaigh, Sameer Mehra, Annette M. Harte
Reinforcement Of Timber Elements In Compression Perpendicular To The Grain Using Compressed Wood Dowels, Michael Conway, Conan O'Ceallaigh, Sameer Mehra, Annette M. Harte
Civil Engineering Research in Ireland 2020
In the past decade, there has been an increased focus on the environmental impacts of construction and a movement towards more sustainable construction products. Timber is one such sustainable product that can achieve these environmental targets but, while timber has a high strength-to-weight ratio parallel to the grain, it demonstrates poor strength perpendicular to the grain. As a result, stress perpendicular to the grain is an important factor in the design of timber structures, especially in areas of concentrated loading, such as supports. This paper describes a study, which examines the use of compressed wood dowels as a sustainable alternative …
Development And Testing Of A Deployable Double Layer Tensegrity Grid, Michael Quilligan, Valentin Gomez-Jauregui, Cristina Manchado, Cesar Otero
Development And Testing Of A Deployable Double Layer Tensegrity Grid, Michael Quilligan, Valentin Gomez-Jauregui, Cristina Manchado, Cesar Otero
Civil Engineering Research in Ireland 2020
Tensegrity is a structural principle based on the use of isolated or contiguous pin jointed components in compression inside a net of continuous tension. Although the concept has been studied for many decades, relatively few examples of tensegrity structures have been used for civil engineering purposes.
A Review Of The Engineering Constraints And Project Management Challenges Involved In Utilising Scot’S Church As A Heritage Asset Through Responsible Adaptive Reuse And Conservation Strategies, Óisín Smith
Civil Engineering Research in Ireland 2020
In the field of structural building, there has been a rising popularity in adaptive reuse of older structures, which stems from a variety of stimuli. Apart from preserving built heritage, providing old buildings with new functions promotes sustainability while preventing and containing urban sprawl. Target 11.4 of the United Nation’s Sustainable Development Goals Agenda 2030 explicitly outlines that “more efforts to protect and safeguard the world’s cultural and natural heritage” are required. In order to valorise and regenerate obsolescent structures, intervention is often required. The dissertation provides a comprehensive overview of conservation engineering and demonstrates the importance of an engineer’s …
An Evaluation Of Design Issues Identified During Reviews Of Structural Designs Of Buildings From 2015 To 2020, Patrick Crean, Richard Osborne
An Evaluation Of Design Issues Identified During Reviews Of Structural Designs Of Buildings From 2015 To 2020, Patrick Crean, Richard Osborne
Civil Engineering Research in Ireland 2020
A recent study on failures of structures in Ireland indicated that approximately 40% could be apportioned to designer error. A 2019 report into recent structural cracking of a high-rise building in Sydney Australia recommended that Independent third party checking by a Chartered Engineer should be a requirement on all major projects prior to construction. The report also stated that the critical elements of the design on these projects should be identified. It is obvious that a certain percentage of buildings constructed each year contain design flaws and only a small proportion of these ever result in a failure. However there …
Loading On Long Span Bridges In Heavily Trafficked Areas, Michael Quilligan, Eugene O'Brien
Loading On Long Span Bridges In Heavily Trafficked Areas, Michael Quilligan, Eugene O'Brien
Civil Engineering Research in Ireland 2020
The critical traffic loading condition for long-span bridges is congestion when vehicles may be closely spaced together. Data on very high traffic flows is limited however, as induction loops which are typically used to collect traffic data, are ineffective when traffic flow breaks down. A number of long span bridges are located in areas of high traffic with periods of recurring congestion occurring daily. While the inter-vehicle gap distances are greater than those occurring during non-recurring full stop accident type events, the high frequency of the recurring congestion events can increase the probability of a critical load case occurring.
A Numerical Study Of The Effect Of Wind Barriers On Traffic And The Bridge Deck, Yuxiang Zhang, Philip Cardiff, Jennifer Keenahan
A Numerical Study Of The Effect Of Wind Barriers On Traffic And The Bridge Deck, Yuxiang Zhang, Philip Cardiff, Jennifer Keenahan
Civil Engineering Research in Ireland 2020
Wind actions can have a great impact on both bridges and traffic on bridges. However, structures designed to shelter the traffic from wind can influence the aerodynamic performance of the bridge deck, especially for long-span bridges. This study compares the effect of non-perforated walls and perforated walls used as wind barriers for traffic by conducting Computational Fluid Dynamics (CFD) simulations on three-dimensional geometries of a four-lane bridge deck. Steady-state simulations employ the Reynolds-Averaged Navier Stokes (RANS) method with the k-epsilon turbulence model and all simulations use parallel computing. An open-sourced software OpenFOAM is used.
Simulation Of Traffic Loading On Long Span Bridges, Hang Zhang, Michael Quilligan
Simulation Of Traffic Loading On Long Span Bridges, Hang Zhang, Michael Quilligan
Civil Engineering Research in Ireland 2020
Existing long span load models have typically been developed using a number of conservative assumptions, and as such are more applicable to the design of new bridges rather than the assessment of existing structures. Excessive conservatism in such assumptions can lead to expensive and unnecessary interventions in existing bridges. Furthermore, existing load models do not always allow for correlations in traffic weights and vehicle positions on the bridge.
Thermodynamic Cement Hydration Modelling Using Hydcem, Niall Holmes, Denis Kelliher, Mark Tyrer
Thermodynamic Cement Hydration Modelling Using Hydcem, Niall Holmes, Denis Kelliher, Mark Tyrer
Civil Engineering Research in Ireland 2020
Thermodynamics have been successfully applied to the field of cement hydration science to predict the formation of phase assemblages and pore solution chemistry. For any cement hydration model to be accepted, it must provide accurate forecasts of which solids may form and how the cement will dissolve over time. This is particularly important for the ongoing development of new sustainable cements and understanding their hydration behaviour in service.