Dr Donya Hajializadeh

Senior Lecturer in Engineering

Faculty:Faculty of Science & Technology

Department:Engineering and the Built Environment

Location: Chelmsford

Areas of Expertise: Built environment

Donya is a chartered member of Engineers Ireland, with experience in Innovative Research and higher education teaching practice. Her research centres on critical transport infrastructures, resilience and vulnerability of critical infrastructure, critical infrastructure interdependencies, resilience in smart cities, and fatigue assessment.

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Background

Following her Masters, Donya competed a PhD entitled Combined Probabilistic Modelling of Load and Resistance in Bridges, funded by the 7th Framework Programme (precursor to Horizons 2020). During her PhD she addressed three of the main shortcomings in bridge reliability assessment being used in practice.

  • Highway Bridge Nonlinear Finite Element Analysis under Extreme Loading Scenarios
  • Spatial Time-Dependent Reliability Analysis of Reinforced Concrete Slab Bridges Subjected to Realistic Traffic Loading
  • A Review of Methods of Assessment of Load Effects in Bridges

Donya then Joined RODIS in October 2013 as a Research Engineer and got an opportunity to work on the variety of research projects funded by the EU 7th Framework Programme such as:

  • BridgeMon (Bridge Monitoring)
  • RAIN (Risk Analysis of Infrastructure Network in response to extreme weather)
  • SMARTRail (Smart Maintenance and Analysis of Rail Transport Infrastructure)
  • DESTinationRAIL (Decision Support Tool for Rail Infrastructure Managers)

Donya also worked on different projects for the Irish National Road Authority (NRA) and the Conference of European Directors of Roads (CEDR). Donya has conducted a review of weight limit classes defined within the Irish legislation and outlined within the Irish Road Safety Authority’s maximum vehicle weights and dimensions guideline document 2013. This project led to development of a software for the long-run traffic simulation.

As part of her position as research engineer at RODIS, Donya has developed Structural Health Monitoring software for steel bridges that utilises the Bridge WIM concept to virtually monitor those parts of the bridge that are not monitored directly. Also I designed a fatigue damage accumulation software to calculate damages at all points on the bridge over its lifetime.

In parallel to her research project role at RODIS, Donya also lectured part-time at University College Dublin for two years. She has imparted the design of reinforced concrete beams, slabs and columns, and pre-stressed concrete and masonry structure design.

Donya joined our Department of Engineering and the Built Environment in 2016.

Spoken Languages

  • English – bilingual proficiency
  • Turkish – native
  • Persian – native

Research interests

  • Risk assessment of critical transport infrastructures
  • Resilience and vulnerability of critical infrastructure
  • Critical infrastructure interdependencies
  • Resilience in smart cities
  • FE multi-dimensional modelling
  • Fatigue assessment

Areas of research supervision

  • Fatigue assessment of steel bridges using multi-dimensional FE modelling
  • Quantification of transport network resilience
  • Quantification of transport network vulnerability
  • SHM systems
  • Traffic modelling

Teaching

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BSc Civil Engineering and BEng Civil Engineering (Highway Design and Construction, Highway Design for Engineers, Structural Methods and Analysis, Design Technology in Civil Engineering)

MSc Civil Engineering (Research Design and Methods)

Qualifications

  • PhD in Civil Engineering, University College Dublin, 2010-13
  • MEng in Civil Engineering, Offshore and Hydraulic Structure Engineering, Sharif University of Technology, 2008-10
  • BEng (Hons) in Civil Engineering, Sharif University of Technology, 2004-08

Memberships, editorial boards

  • Chartered Engineer of Engineers of  Ireland, CEng MIEI
  • Member of Institution of Civil Engineering,  MICE
  • Young Engineer Member of Institute of Structural Engineers IstructE
  • Member of Women’s Engineering Society, WES

Research grants, consultancy, knowledge exchange

Project Title: SmartRAIL (Smart Maintenance and Analysis of Rail Transport infrastructure)

Client: EU 7th Framework Programme

Project Role: Project Engineer

Project Date: 2011-2014

Overview: This project’s vision was to provide a framework for rail infrastructure operators to ensure the safe, reliable and efficient operation of ageing European railway networks. I developed a software tool to calculate the accumulated fatigue damage at any point on a railway bridge over its entire service life. I also conducted bridge reliability analysis using the First Order Reliability Method (FORM).

Project Title:  Administration of Abnormal Vehicles

Client: Transport Infrastructure Ireland (Irish National Roads Authority)

Project Role: Project Engineer

Project Date: 2012-2013

Overview: The aim of this project was to develop a simple and efficient process for verifying the load carrying capacity of structures on the Irish Major Inter-Urban (MIU) network, considering the codified abnormal vehicle loadings which they have been designed to carry, e.g. HB loading per BD37/01 or LM3 loading as per the Eurocode, and also the actual abnormal vehicles (vehicles not complying with weight/dimension limits specified by regulation) which may feasibly be anticipated on these routes. I assessed bridge response under measured and simulated traffic using the long-run simulation software I developed, which is capable of simulating the effects of traffic loading over thousands of years for a variety of load effects and bridge lengths.

Project Title:  BridgeMon (Bridge Monitoring)

Client: EU 7th Framework Programme

Project Role: Project Engineer

Project Date: 2012-2014

Overview: In the area of structural health monitoring (SHM), BridgeMon’s objective was to develop and implement tools for improved bridge assessment, including modules to evaluate the fatigue life of steel bridges subjected to traffic load. ROD-IS’s aim was to commercialise research allowing the Small and Medium-sized Enterprise (SME) project partners to develop new products and services. During this project, I implemented the bridge virtual monitoring concept in a 146-metre cable-stayed bridge in the Netherlands. I developed SHM software for steel bridges that utilises the Bridge WIM concept to virtually monitor those parts of the bridge that are not monitored directly. I verified the software and the detailed FE bridge model using field measurements from the Netherlands. As part of the same project, I designed fatigue damage accumulation software to calculate damage at all points on the bridge over its lifetime.

Project Title: ReGen (Risk Assessment of Aging Infrastructure)

Client: Conference of European Directors of Roads

Project Role: Project Engineer

Project Date: 2014-2016

Overview: The objective of the ReGen project is to provide Road Owners/Managers with best practice tools and methodologies for risk assessment of critical infrastructure elements, e.g. bridges, retaining structures and steep embankments. In this project, I have developed a reliability assessment guideline for bridges subjected to stationary and growing traffic. This guideline provides statistical parameters for bridge resistance and load distribution, with and without traffic growth.

Project Title:  Weight Limits for Unregulated Heavy Good Vehicles (HGV)

Client: Transport Infrastructure Ireland (Irish National Roads Authority)

Project Role: Project Engineer

Project Date: 2015

Overview: The aim of this project was to develop weight limits for HGVs, a particular configuration of which was unregulated in Irish law at that time. The focus was on the impact of the specified vehicle configurations on bridge structures and pavements. Given my experience in statistical analysis and Weigh-In-Motion (WIM) data, I was made responsible for analysing the WIM data to remove all unreliable and suspicious data from the records. I also conducted a review of weight limit classes as defined within the Irish legislation and as outlined in the Irish Road Safety Authority’s maximum vehicle weights and dimensions guidelines from 2013. I found a significant error in two of the WIM data collection sites, using the extensive experience in statistical analysis I gained during my PhD and my time in ROD-IS.

Project Title: Assessment of Kish Bank Light House

Client: Commissioners of Irish Lights

Project Role: Design Engineer

Project Date: 2015

Overview: This project involved a structural condition assessment of the Kish Bank Lighthouse. The core objective of this study was to determine the current condition of its structure and identify the rate of structural deterioration. I developed a 3D FE model of the lighthouse subjected to wave loads for a cylindrical structure. The properties of the water wave showed that the lighthouse is only affected by non-breaking waves as the properties of the modelled waves do not meet the requirements for breaking and broken wave formation. Given that the lighthouse’s geometry does not meet the requirements for wave forces applied to a pile according to the Shore Protection Manual, the formulae for forces applied to a wall were conservatively used to calculate the equivalent static load. I also conducted the stability checks, including sliding, overturning and bearing capacity checks.

Project Title:  New Wear Crossing Bridge

Client: Farrans Construction Ltd

Project Role: Design Engineer

Project Date: 2015

Overview: This project involved the design and construction of a cable stayed bridge and its approaches over the River Wear in Sunderland. As part of a value engineering exercise, I was responsible for assessing the possibility of reducing section sizes in the upper sections of the bridge pylon. I developed a 3D FE model and applied wind loading in accordance with EN 1991-1-4:2005. As a result of the analysis, the section sizes were reduced by 25%.

Project Title:  RAIN (Risk Analysis of Infrastructure Network – in response to extreme weather)

Client: EU 7th Framework Programme

Project Role: Project Engineer

Project Date: 2014-2017

Overview: The project’s aim is to provide an operational analysis framework to minimise the impacts of extreme weather on European critical infrastructure (CI) networks. As technical lead for ROD-IS activities, I was involved in developing a comprehensive Bayesian based risk assessment framework in MATLAB that considers the interdependencies of CI networks. In this project, I have supervised and advised other in-house staff on the project, led technical meetings and coordinated technical project collaborations with other international partners. As part of my role in this project, I was also responsible for collecting data in order to benchmark the framework against case study scenarios, which requires extensive knowledge of GIS-based data analysis and processing, using QGIS and ArcGIS. I have also liaised with emergency responders in Finland and Italy in order to get data for the case studies. I have presented my work at the ICASP12 and CERI2015 conferences.

Project Title:  DESTination RAIL (Decision Support Tool for Rail Infrastructure Managers)

Client: EU 7th Framework Programme

Project Role: Project Engineer

Project Date: 2015-2018

Overview: The DESTination RAIL project’s aim is to develop management tools based on scientific principles for risk assessment using real performance measurements. Given my SHM experience from BridgeMon and extensive experience in FEM, I was involved in implementing SHM on the Boyne Viaduct Bridge in Drogheda according to measurements collected from the bridge and numerical FEM. For this project, I have developed an FEM representing the static and dynamic responses of the Boyne Viaduct railway bridge under train load. For assessing localised stresses in the rail bearer connections, I have developed a 3D FEM of connections using solid elements. As part of the work on this project, I have processed strain gauge and accelerometer measurements to analyse data and remove noise by using Fast Fourier Transform (FFT) and low pass filters. The result of this work is submitted as a conference paper for the Railways 2016 conference.

Selected recent publications

Hajializadeh, D., OBrien, E.J. and O’Connor, 2017. Virtual Structural Health Monitoring and Remaining Life Prediction of Steel Bridges. Canadian Journal of Civil Engineering, 44(2), pp264-273 (doi: 10.1139/cjce-2016-0286).

Hajializadeh, D., OBrien, E.J. and Stewart, M.G., 2016. The Sensitivity of Bridge Safety to Spatial Correlation of Load and Resistance. Structures Journal, 5, pp23-34.

Hajializadeh, D., Al Sabah, A.S., O’Brien, E.J., Leafer, D. and Enright, B., 2015. Nonlinear analysis of isotropic slab bridges under extreme traffic loading. Canadian Journal of Civil Engineering (published online: 808-817, 10.1139/cjce-2014-0331).

Hajializadeh, D., Stewart, M.G., Enright, B. and O’Brien, E.J., 2015. Spatial Time-Dependent Reliability Analysis of Reinforced Concrete Slab Bridges Subjected to Realistic Traffic Loading. Journal of Structure and Infrastructure Engineering (published online: DOI:10.1080/15732479.2015.1086385).

O’Brien, E.J., Schmidt, F., Hajializadeh, D., Zhou, X.Y., Sheils, E., Enright, B., Caprani, C.C. and Wilson, S.H., 2015. A Review of Methods of Assessment of Load Effects in Bridges. Structural Safety, 53, pp44–56.

Leahy, C., O’Brien, E.J., Enright, B and Hajializadeh, D., 2014. Review of HL-93 Bridge Traffic Load Model Using an Extensive WIM Database. Journal of Bridge Engineering, 10.1061/(ASCE)BE.1943-5592.0000729.

Richardson, J., Brown, A., Jones, S., O’Brien, E.J. and Hajializadeh, D., 2014. On the Use of Bridge Weigh in Motion for Overweight Truck Enforcement. International Journal of Heavy Vehicle Systems, 21(2), pp83–104. 


Recent presentations and conferences

Hajializadeh, D. and Imani, M., 2017. Infrastructure Systems’ Resilience Quantification. Critical Infrastructure Protection and Resilience Europe, The Netherlands, 9-11 May 2017.

Imani, M. and Hajializadeh, D., 2017. Comparison of Critical infrastructure Resilience Quantification Techniques. 12th International Conference on Structural Safety & Reliability ICOSSAR 2017, Vienna, Austria, 6-10 August 2017.

Connolly, L., Hajializadeh, D., Leahy, C., O’Connor, A., O’Brien, E.J. and Bowe, C., 2016. Calculation of Dynamic Allowance for Railway Bridges from Direct Measurement. The Third International Conference on Railway Technology: Research, Development and Maintenance, Railways 2016, Sardinia, Italy, 5-8 April 2016.

O’Brien, E.J., Hajializadeh, D. and Power, R., 2015. Quantifying the Impact of Critical Infrastructure Failure Due to Extreme Weather Events. 12th International Conference on Applications of Statistics and Probability in Civil Engineering, ICASP12, Vancouver, Canada, 12–15 July 2015.

O’Connor, A., O’Brien, E.J. and Hajializadeh, D., 2014. Probabilistic Analysis of Potential Impact of Extreme Weather Events on Infrastructures. Civil Engineering Research in Ireland, Belfast, UK, pp33–38.

Enright, B., Hajializadeh, D. and O’Brien, E.J., 2013. Reliability-Based Bridge Assessment Using Enhanced Monte Carlo to Simulate Extreme Traffic Loading. 11th International Conference on Structural Safety & Reliability (ICOSSAR), 2013. New York, US.