All Outputs (57)

Load transfer mechanisms for capped and uncapped non-displacement piles above tunnels: a centrifuge modelling study (2024)
Journal Article

This paper presents results from geotechnical centrifuge tests of tunnelling in dry dense sand beneath loaded non-displacement piles, focusing on the effect of a pile cap (representative also of a raft or grade beam) in contact with the soil surface... Read More about Load transfer mechanisms for capped and uncapped non-displacement piles above tunnels: a centrifuge modelling study.

Effects of embedded walls on tunnelling-induced sandy ground displacements: a numerical investigation (2024)
Journal Article

Urban tunnelling projects pose significant risks to the integrity of nearby structures due to ground movements induced by the excavation process. Embedded walls are commonly employed as a protective measure to mitigate these adverse effects. This pap... Read More about Effects of embedded walls on tunnelling-induced sandy ground displacements: a numerical investigation.

Assessing the performance of winged caisson foundations for offshore wind turbines (2023)
Journal Article

The foundation of an offshore wind turbine (OWT) accounts for up to 20% of the total cost; therefore, investigations into reliable and efficient foundations are important for the offshore wind energy industry. This article describes an innovative win... Read More about Assessing the performance of winged caisson foundations for offshore wind turbines.

Numerical study on the effect of protective wall depth in reducing structure deformations caused by tunnelling (2023)
Journal Article

To reduce tunnelling induced damage of buildings, a ‘protective wall’ is sometimes constructed between the location of the new tunnel and existing foundations. One of the key design questions relates to the optimal wall depth, where further increase... Read More about Numerical study on the effect of protective wall depth in reducing structure deformations caused by tunnelling.

Characterisation of spoil materials to develop an equivalent spoil material for physical model tests (2022)
Journal Article

The engineering behaviour of spoil (overburden) needs to be explored either to understand the stability of reservoir slopes under various geological and climatic conditions or for the effective utilisation of reclaimed mines for sustainable infrastru... Read More about Characterisation of spoil materials to develop an equivalent spoil material for physical model tests.

Effect of spatial variation of spoil material properties on slope displacements under rapid drawndown of pit lakes (2022)
Journal Article

In many European countries, lignite or brown coal is used as a fuel source in steam-electric power generation. Upon completion of mining activities, a reclamation plan is imperative to ensure environmental and social prosperity of local areas. Abando... Read More about Effect of spatial variation of spoil material properties on slope displacements under rapid drawndown of pit lakes.

Centrifuge modelling of spoil slopes within pit-lake mine reclamations (2022)
Journal Article

Pit lakes are a common form of reclamation of areas where open pit mining activities have taken place. The development of these lakes often uses previous overburden materials, or “spoils”, that are readily available. Depending on the local geology, t... Read More about Centrifuge modelling of spoil slopes within pit-lake mine reclamations.

Foundation systems for sustainable revitalisation of spoil dump areas (2022)
Journal Article

The design of foundations systems is well established in the literature and codes of practice. However, these are generally applicable to well characterised, homogenous ground conditions. Spoil materials represent a significant challenge when impleme... Read More about Foundation systems for sustainable revitalisation of spoil dump areas.

The challenges associated with laboratory scale physical modelling of high-plasticity spoil materials (2022)
Journal Article

Characterisation of spoil (surface mine overburden) material is essential when investigating geotechnical issues associated with the spoil, e.g., for investigating the stability of pit lakes formed with spoil or spoil-structure interaction for any st... Read More about The challenges associated with laboratory scale physical modelling of high-plasticity spoil materials.

Closure to “Centrifuge Tests on Rock-Socketed Piles: Effect of Socket Roughness on Shaft Resistance” by J. G. Gutierrez-Ch, G. Song, C. M. Heron, A. Marshall, and R. Jimenez (2022)
Journal Article

Effect of Duxseal on Horizontal Stress and Soil Stiffness in Small-Amplitude Dynamic Centrifuge Models (2022)
Journal Article

The constitutive behavior of soil is stress dependent. Therefore, geotechnical centrifuges are widely used to replicate full-scale stress fields, thereby ensuring the correct soil response within reduced-scale centrifuge models. A vibration-absorbing... Read More about Effect of Duxseal on Horizontal Stress and Soil Stiffness in Small-Amplitude Dynamic Centrifuge Models.

Filtration performance of non- woven geotextiles with internally-stable and -unstable soils under dynamic loading (2022)
Journal Article

In many applications, geotextiles are subjected to dynamic loading conditions, for example, below roads and railways, for which a Gradient Ratio (GR) test is often used to assess filtration compatibility of soil-geotextile systems. This paper present... Read More about Filtration performance of non- woven geotextiles with internally-stable and -unstable soils under dynamic loading.

Tunnel–piled structure interaction: Numerical simulation of hybrid centrifuge tests (2021)
Journal Article

Tunnel excavation in urban areas causes ground movements that could damage existing nearby piled structures. Geotechnical centrifuge modelling has been widely used as a tool to study problems related to tunnelling activities and its interaction with... Read More about Tunnel–piled structure interaction: Numerical simulation of hybrid centrifuge tests.

Investigation of soil-pile-structure interaction induced by vertical loads and tunnelling (2021)
Journal Article

The response of pile groups and piled structures to vertical and tunnelling-induced loads is studied. A two-stage model is adopted that can efficiently consider external actions, greenfield tunnelling movements, superstructure stiffness, ultimate pil... Read More about Investigation of soil-pile-structure interaction induced by vertical loads and tunnelling.

Centrifuge Tests on Rock-Socketed Piles: Effect of Socket Roughness on Shaft Resistance (2021)
Journal Article

Preliminary estimations of shaft resistance of rock-socketed piles are usually conducted using empirical formulations that relate to the uniaxial compressive strength (σc) of the weaker material involved (intact rock or pile). However, there are othe... Read More about Centrifuge Tests on Rock-Socketed Piles: Effect of Socket Roughness on Shaft Resistance.

Tunneling-Induced Deformation of Bare Frame Structures on Sand: Numerical Study of Building Deformations (2021)
Journal Article

The paper compares the performance of two Finite Element Method approaches in reproducing the response of bare frame structures to tunneling in dry dense sand. A fully coupled approach, in which the tunnel, frame and soil are accounted for, is comp... Read More about Tunneling-Induced Deformation of Bare Frame Structures on Sand: Numerical Study of Building Deformations.

Role of Footing Embedment on Tunnel–Foundation Interaction (2021)
Journal Article

This technical note investigates the effect of footing embedment depth on tunnel-structure interaction using geotechnical centrifuge testing. A two-story framed building on separate footings, either resting directly on the surface or embedded in the... Read More about Role of Footing Embedment on Tunnel–Foundation Interaction.

Centrifuge study on the use of protective walls to reduce tunnelling-induced damage of buildings (2021)
Journal Article

Tunnel excavation in urban areas causes ground movements that could damage existing nearby piled structures. In practice, to protect structures from tunnelling-induced damage, a stiff protective wall can be constructed between the tunnel and the adja... Read More about Centrifuge study on the use of protective walls to reduce tunnelling-induced damage of buildings.

Centrifuge application of fibre Bragg gratings: pile axial loads and wall bending moments (2021)
Journal Article

One challenge for geotechnical centrifuge testing of soil-structure interaction problems is the reliable measurement of induced structural strains/forces. This paper presents a novel application of fibre Bragg grating (FBG) sensors for strain measure... Read More about Centrifuge application of fibre Bragg gratings: pile axial loads and wall bending moments.

Geotechnical Characterization of Fine-Grained Spoil Material from Surface Coal Mines (2021)
Journal Article

Coal mines produce large amounts of excavated waste soils, known as spoils. These materials can cover vast areas, are typically dumped in heaps without any treatment and are difficult to exploit for engineering purposes because of their significant v... Read More about Geotechnical Characterization of Fine-Grained Spoil Material from Surface Coal Mines.