Kenneth Gavin

Kenneth Gavin
Delft University of Technology | TU · Department of Geoscience and Engineering

Doctor of Philosophy

About

187
Publications
146,042
Reads
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3,545
Citations
Introduction
Ken Gavin currently works at the Department of Geoscience and Engineering, Delft University of Technology. Ken does research on foundation systems and the impact of climate change on transport infrastructure.
Additional affiliations
September 2001 - March 2016
University College Dublin
Position
  • Professor (Associate)

Publications

Publications (187)
Conference Paper
Flooding is a significant threat to human-life, ecosystems, cultural heritage and society in general. A risk-based safety approach is necessary to support decision making and prioritize intervention measures, either during the response or during the prevention stage. As a consequence of flooding, transport infrastructure and flood protection system...
Conference Paper
The intensity and frequency of flood events is increasing due to climate change impact and accompanying precipitation extremes. However, the impact of a given flood event depends critically on the resilience of the flood defence system, primarily a network of earth embankments and riverbanks. The paper presents the efforts conducted within the ongo...
Article
Full-text available
To identify the unknown values of the parameters of Burger’s constitutive law, commonly used for the evaluation of the creep behavior of the soft soils, this paper demonstrates a procedure relying on the data obtained from multiple sensors, where each sensor is used to its best advantage. The geophysical, geotechnical, and unmanned aerial vehicle d...
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Weather phenomena can result in severe impacts on railway infrastructure. In future, projected changes to the frequency and/or intensity of extreme weather events could change weather–infrastructure risk profiles. Infrastructure owners and operators need to manage current weather impacts and put in place adequate plans to anticipate and adapt to ch...
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The influence of combined loading on the response of monopiles used to support offshore wind turbines (OWTs) is investigated in this paper. In current practice, resistance of monopiles to vertical and lateral loading is considered separately. As OWT size has increased, the slenderness ratio (pile length, L, normalised by diameter, D) has decreased,...
Conference Paper
Determination of the relevant soil stratigraphy is of the paramount importance for any geotechnical analysis. The cone penetration test (CPT) is the cost-effective, rapid, continuous, and reliable testing method for assessing soil layering and estimating in-situ mechanical properties of soil, and as such is especially useful for subsoil investigati...
Conference Paper
This paper presents a case study focused on the Brajdica railway tunnel, which carries the Zagreb-Rijeka railway line into the port of Rijeka in Croatia and thus represents a critical node on the European TEN-T network. The tunnel is undergoing a major reconstruction project to increase its capacity. As part of this work an extensive embedded monit...
Article
The continuous monitoring of long-term performance of tunnels constructed in soft rock masses shows that the rock mass deformations continue after construction, albeit at a rate that reduces with time. This is in contrast with NATM postulates which assume deformation stabilizes shortly after tunnel construction. This paper proposes the prediction o...
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Aged earthworks constitute a major proportion of European rail infrastructures, the replacement and remediation of which poses a serious problem. Considering the scale of the networks involved, it is infeasible both in terms of track downtime and money to replace all of these assets. It is, therefore, imperative to develop a rational means of manag...
Article
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The majority of installed offshore wind turbines are supported on large‐diameter, open ended steel pile foundations, known as monopiles. These piles are subjected to vertical and lateral loads while in service. In current design practice, interaction of vertical and lateral loads are not considered, rather piles are designed to resist vertical and...
Article
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The majority of offshore wind structures are supported on large-diameter, rigid monopile foundations. These piles may be subjected to scour due to the waves and currents that causes a loss of soil support and consequently decreases the pile capacity and system stiffness. The results of numerical models suggest that the shape of the scour-hole affec...
Article
Tidal-stream (tidal) energy is a renewable form of energy produced by harnessing the kinetic energy of marine currents created by the rise and fall of the tides and converting it into electricity. To-date, tidal energy development remains largely in the demonstration stage and the development community has not rallied behind any one foundation tech...
Conference Paper
Pile driveability is affected by, amongst other factors, the pore pressure changes in the vicinity of the pile. However, accurate quantification of the generated pore pressure in the soil layer during impact pile driving is a challenging task, especially in the small-scale models. An electro-mechanical miniature impact pile driver has been designed...
Article
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This paper investigates the applicability of Cone Penetration Test (CPT)‐based axial capacity approaches, used for estimating pile static capacity, to the prediction of pile driveability. An investigation of the influence of various operational parameters in a driveability study is conducted. A variety of axial capacity approaches (IC‐05, UWA‐05 an...
Article
This paper offers a solution to overcome time-consuming numerical analysis for the evaluation of the impact of tunnel construction in a complex karst environment by implementing Monte-Carlo simulation (MCS) using a neural network (NN) tool. The rock mass is described using three parameters, Geological Strength Index, the uniaxial compression streng...
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The influence of scour on the lateral response of monopile foundations for offshore wind turbines is investigated in this paper. Application of lateral load-displacement (p-y) curves to predict the lateral pile behaviour is subject to uncertainty as many of the presently used design approaches have been derived for long, slender piles. These piles,...
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In the current economic climate, it is crucial to optimize the use of all resources regarding railway infrastructure maintenance. In this paper, a multi-attribute decision support framework is applied to categorize railway embankments in order to prioritize maintenance activities. The paper describes a methodology to first determine the current con...
Article
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Rock bolts represent a critical element for many rock mass stabilization, tunnel construction, and underground work projects. Therefore, the evaluation of their condition is vital for proving their functionality over the entire life-cycle of structures. A number of techniques for quantifying condition of rock bolts are presently applied or are bein...
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Because of the deltaic nature of the Netherlands, deep soft soil deposits are widespread. Due to the population density exploitation of underground space is vital for commercial developments and transport networks. Piles are used as primary support elements in deep excavations, cut and cover tunnels, quay walls, flood defences and to provide uplift...
Conference Paper
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Knowledge of the fines content is necessary for all soil classification systems and an important factor in the evaluation of soil strength in liquefaction and seismic settlement analysis. This paper presents the application of cone penetration test, CPT data for estimating the soil fines content. The correlation can be used either as a first estima...
Conference Paper
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The effect of scour hole shape on the lateral capacity of monopiles, as the foundation of offshore wind turbines, in a sand layer has been investigated both experimentally and numerically. The experimental programme consists of 4 centrifuge tests at 100g on a 1.8 m rigid monopile with original embedment of 5 times the pile diameter (5D). Three type...
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This study presents a probabilistic analyses of suction bucket installation in cohesionless soils. The spatial variability of soil properties is quantified using a representative survey dataset from practice. Vertical random field modelling is used to model cone resistance variability and probability density functions are fitted using drained param...
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The dynamic response of structures in contact with soil is receiving increasing interest and there is a growing need for more accurate models capable of simulating the behaviour of these systems. This is particularly important in the field of offshore wind turbines, where accurate estimates of system frequency are needed to avoid resonance, and in...
Article
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The paper describes the site characterization of a dense sand test site developed by the authors in an active quarry located near the village of Blessington, Ireland. The site has been used to investigate the field response of a number of foundation systems including jacked closed and open-ended piles, driven concrete and steel open-ended piles, sh...
Chapter
This paper provides a brief overview of the Pile Soil Analysis (PISA) project, recently completed in the UK. The research was aimed at developing new design methods for laterally loaded monopile foundations, such as those supporting offshore wind turbine structures. The paper first describes the background to the project and briefly outlines the ke...
Article
This paper provides a summary of the PIle Soil Analysis (PISA) project, completed in the UK during the period 2013 to 2018. The research led to the development of a new, computationally efficient, one dimensional design model for laterally loaded monopile foundations, particularly for offshore wind turbine support structures. The current form of th...
Article
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An important aspect regarding the sustainability of steel structures is to ensure the structure is protected from corrosion. A number of surface coatings are available that play an important role in protecting these structures. An important part of the management of these structures is reliable and regular inspection along with methods for early de...
Article
Full-text available
There have been significant developments in the area of vibration-based bridge scour monitoring in recent years. Traditional scour monitoring using either visual assessment or diving inspections are now recognised to be very unreliable and highly subjective. There has been a concerted effort to move towards reliable systems capable of either direct...
Conference Paper
Full-text available
There has been significant progress made in the area of vibration-based bridge scour monitoring in recent years. Traditional scour monitoring using visual-type inspections relied on divers investigating the condition of bridge foundations and manually locating and measuring scour holes. This is now considered very unreliable and highly subjective,...
Article
Full-text available
Offshore pile driving is a high-risk activity as delays can be financially punitive. Experience of pile driving for offshore jacket structures where pile diameters are typically < 2m has led to the development of empirical pile driveability models with proven predictive capability. The application of these methods to larger diameter piles is uncert...
Article
Full-text available
Bridges can be subjected to damaging environmental actions due to flooding and seismic hazards. Flood actions that result in scour are a leading cause of bridge failure, while seismic actions that induce lateral forces may lead to high ductility demand that exceeds pier capacity. When combined, seismic actions and scour can lead to effects that dep...
Conference Paper
Full-text available
Several regions in Europe are prone to both seismic and scour hazards thus bridges can suffer from the joint actions of these two phenomena. The two types of hazards are actually independent as to the generation process but the loss of surrounding soil due to scour may significantly modify the dynamic parameters of the structure thus changing its r...
Conference Paper
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Pile foundations used for offshore wind structures are subjected to large lateral loading from wind and waves while in service as well as significant vertical loading from the top structure. Erosion of soil from around these structures, termed scour, poses a significant problem for the structural stability. In order to better understand the perform...
Conference Paper
Full-text available
The evaluation of soil parameters for design is best undertaken through comprehensive laboratory test pro-grammes. However, due to sampling difficulty, time and cost constraints correlations between in-situ tests and physical-mechanical properties of soils are routinely applied in practice. This paper presents data col-lected from five sites in Nor...
Conference Paper
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In infrastructural networks, bridges can be considered key elements and their functionality must be preserved. Floods (leading to scour erosion) and earthquakes could be considered among the most critical natural events that may become more frequent with climate change, causing significant damage to bridges. Several regions in Europe have both seis...
Conference Paper
In current modelling of excess pore pressures (EPPs) below marine structures, the irregular nature of cyclic loads and the real storm development are not taken into account. The effect of the irregular cyclic loading in time is investigated in this paper. The wind, wave and turbine loads on a gravity based foundation (GBF) are derived in the freque...
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Accurate characterisation of soil behaviour in Dynamic-Soil-Structure Interaction (DSSI) applications remains a significant challenge. Knowledge of the operational soil-structure interaction stiffness is important for applications ranging from earthquake engineering to offshore structures subjected to wind and wave loading. A number of methods have...
Conference Paper
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SAFE-10-T (Safety of Transport Infrastructure on the TENT Network) is a project funded by the European Union according to the Horizon 2020 Research and Innovation programme. The SAFE-10-T project is developing a global risk framework that will form the basis of an online Decision Support Tool (DST) to assist in decision-making regarding the managem...
Article
This paper presents an experimental and analytical study to investigate the effect of shape on the pull-out capacity of shallow horizontal plate anchors in sand under drained loading conditions. Novel dynamically penetrating plate anchor concepts have been proposed for use in the offshore energy sector. These anchor concepts may have shapes that ar...
Article
Over the past 5 years, a substantial research effort aimed at optimising the design of offshore wind turbines has led to significant reductions in the projected cost of developing offshore wind. Optimising the geotechnical design of these structures, through modern analysis techniques such as 3D Finite Element Modelling (FEM), has played a key role...
Conference Paper
Full-text available
Soil supporting foundations for infrastructural assets such as bridges are repeatedly subjected to dynamic loading from passing traffic. The load-displacement characteristics are nonlinear at even small to medium strains, however this effect is mostly modelled using secant stiffness models with effective linear stiffness. This simplification enable...
Conference Paper
Full-text available
A number of extreme weather events (EWEs) have made the resilience of the critical infrastructure of priority concern for infrastructure owners, operators and other decision makers. In this context, the European research project RAIN has studied the EWEs and their impacts upon land-based infrastructure in Europe, and develop a Risk-Based Decision M...
Conference Paper
Full-text available
Many railway embankments across Europe were constructed over 150 years ago. These embankments were not subject to rigorous design practice but instead were crudely constructed using end tipping techniques. As a result, the majority of these embankments are overly steep and far in excess of the design angles recommended in Eurocode 7. Over recent ye...
Conference Paper
Full-text available
Infrastructure maintenance is a complex task due to operational needs of service quality, availability demands, traffic intensity, and budget constraints. Traditionally, maintenance decisions are based on infrastructure managers' experiences, judgments, and available choices. Though, the technology push and the availability of an abundance of data...
Article
Soil classification is a means of grouping soils into categories according to a shared set of properties or characteristics that will exhibit similar engineering behaviour under loading. Correctly classifying site conditions is an important, costly, and time-consuming process which needs to be carried out at every building site prior to the commenc...
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Full-text available
The trend for development in the offshore wind sector is towards larger turbines in deeper water. This results in higher wind and wave loads on these dynamically sensitive structures. Monopiles are the preferred foundation solution for offshore wind structures and have a typical expected design life of 20 years. These foundations have strict servic...
Article
Rainfall thresholds express the minimum levels of rainfall that need to be reached or exceeded in order for landslides to occur in a particular area. They are a common tool in expressing the temporal portion of landslide hazard analysis. Numerous rainfall thresholds have been developed for different areas worldwide, however none of these are focuse...
Conference Paper
Full-text available
There has been significant developments in the area of vibration-based bridge scour monitoring in recent years. Traditional scour monitoring using diving inspections is now considered very unreliable and highly subjective. There has been a concerted effort to move towards more reliable systems capable of either direct measurement of scour or indire...