GEO-INSTALL
Modelling installation effects in geotechnical engineering
| Coordinatore | UNIVERSITY OF STRATHCLYDE
Organization address
address: Richmond Street 16 contact info |
| Nazionalità Coordinatore | United Kingdom [UK] |
| Totale costo | 1˙280˙725 € |
| EC contributo | 1˙280˙725 € |
| Programma | FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) |
| Code Call | FP7-PEOPLE-IAPP-2008 |
| Funding Scheme | MC-IAPP |
| Anno di inizio | 2009 |
| Periodo (anno-mese-giorno) | 2009-06-01 - 2013-05-31 |
Partecipanti
| # | ||||
|---|---|---|---|---|
| 1 |
UNIVERSITY OF STRATHCLYDE
Organization address
address: Richmond Street 16 contact info |
UK (GLASGOW) | coordinator | 242˙938.00 |
| 2 |
GeoDelft Innovation B.V.
Organization address
address: Stieltjesweg 2 contact info |
NL (Delft) | participant | 375˙889.00 |
| 3 |
Plaxis bv
Organization address
address: Delftechpark 53 contact info |
NL (Delft) | participant | 286˙368.00 |
| 4 |
TECHNISCHE UNIVERSITEIT DELFT
Organization address
address: Stevinweg 1 contact info |
NL (DELFT) | participant | 203˙323.00 |
| 5 |
Keller Limited
Organization address
address: Oxford Road contact info |
UK (Coventry) | participant | 113˙477.00 |
| 6 |
STIFTELSEN NORGES GEOTEKNISKEINSTITUTT
Organization address
address: Sognsveien 72 contact info |
NO (OSLO) | participant | 28˙773.00 |
| 7 |
UNIVERSITAET STUTTGART
Organization address
address: Keplerstrasse 7 contact info |
DE (STUTTGART) | participant | 17˙439.00 |
| 8 |
STELLENBOSCH UNIVERSITY
Organization address
address: RYNEVELD STREET WILCOCKS BUILDING 2035 contact info |
ZA (STELLENBOSCH) | participant | 12˙518.00 |
Mappa
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Obiettivo del progetto (Objective)
'The aim of the proposed Marie Curie IAPP project is to develop, validate and demonstrate new robust numerical tools for modelling large deformation problems in geotechnics, considering both quasi-static and dynamic applications. Examples of such applications are the interaction between soil and foundations during installation, service and failure, a well as prediction of slope stability (mass gravity flow problems). The main focus will be in modelling installation effects in geotechnics. From the scientific point of view, the project involves major development and extension of the Material Point Method (MPM), and enhancement and further development of material models for describing the complex rate-dependent stress-strain-strength behaviour of natural geomaterials. In parallel, it also involves further development of various extended finite element methods to account for installation effects, which have the potential to become routine design tools in the future. The core of the proposed project is to validate and demonstrate the new methods and tools for modelling installation effects in geotechnics, which involved real field applications, through intense collaboration between industry and academia. In parallel, the project aims to strengthen and expand the collaborative links between the partners and to increase the R&D input and innovation in the geotechnical field. The philosophy/approach is problem driven, e.g. the numerical tools are developed to solve challenging problems of practical importance.'
Introduzione (Teaser)
Installation of civil engineering infrastructure often requires placement of structural elements, such as piles and ground improvement into the soil. This process changes significantly the soil properties, but is as yet not accounted for in design.
Descrizione progetto (Article)
Deformations alter the pore pressures and the strength and stiffness of the soil. Understanding and predicting the installation effects is critical when considering the quality and long-term reliability of infrastructure. New models developed as part of the EU-funded project 'Modelling installation effects in geotechnical engineering' (GEO-INSTALL) will enable engineers and scientists to consider the effects of installation in practical geotechnical problems.
Researchers studied installation effects with analyses utilizing finite element and material point methods (MPM). MPM is a new mesh-free particle-based method with some similarities with the finite element method.
GEO-INSTALL made major advances in constitutive soil models, considering static, cyclic and dynamic loading, by developing and implementing new user-defined models for clays and sands. Combining these models with MPM, enabled scientists to model issues such as sand liquefaction.
The team developed a new finite element technique for modelling periodic ground improvement (installations at regular intervals to improve foundation soil) exploiting so-called a volume averaging technique. The model is currently being validated against field test results. Embedded pile models have been improved and the algorithms are incorporated in PLAXIS finite element software for geotechnical professionals.
Most civil engineering applications, such as excavations and construction of foundations for buildings and infrastructure require careful analysis of deformations and stability. The advances made to modelling software, simulating large deformations, will greatly enhance our possibilities to account for installation effects, improving the effectiveness and reliability of geotechnical constructions.