Blog Archiv1es

2002 Rankine Lecture: Numerical Analysis: A Virtual Dream or Practical Reality?

The development of numerical analysis and its application to geotechnical problems over the past 20 years have provided geotechnical engineers with an extremely powerful analysis tool. However, the use of such analysis is still not widespread, and when it is used there is all too often evidence of bad practice. Part of the reason for …more

Posted in 2004 Meetings, Meeting, South Australia and NT |

The Maryland Reactive Soil Field Site

Dr Stephen Fityus is a lecturer in geotechnical engineering at the University of Newcastle. He has a background in engineering geology and geotechnical engineering, from undergraduate studies in engineering and geology at the University of Newcastle. He worked for 4 years, mostly in the local geotechnical industry, before returning to the University of Newcastle to …more

Posted in 2004 Meetings, Meeting, South Australia and NT |

Site Visit: Upgrading the Happy Valley Dam

Speakers include: Van Kennewell, Andy Parsons, Peter Russell, Peter Miller, Paul Gunson, Alan Moon Construction works are being carried out on the Happy Valley Dam as part of SA Water’s program of dam safety upgrades for their portfolio of major dams. The site visit provides an excellent opportunity to see the works first hand and …more

Posted in 2004 Meetings, Meeting, South Australia and NT |

Tunnels and Excavations: Ground Movements and the Construction Process

Infrastructure development invariably involves construction of excavations in the ground. These may be long and horizontal – tunnels – or short, often wide and vertical – basement excavations or cut-and cover tunnels. The excavations need to be formed safely, so stability can be an issue, and increasingly there are major concerns about the assessment and …more

Posted in 2004 Meetings, Meeting, South Australia and NT |

Half-day Seminar: Geotechnical Aspects of Landfills

Posted in 2005 Meetings, Meeting, South Australia and NT |

Picnic

The AGS committee organised a picnic event for members and guests of the SA Chapter of the Australian Geomechanics Society to bring their families and meet in a social atmosphere. Thornden Park Reserve was picked for its amenities and its historical flavour as an old water reservoir (for the geotechnical minded). Richard Cavagnaro was involved …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Soil Characterisation: The Importance of Structure and Anisotropy

The design process in geotechnical engineering was reviewed to identify the role played by soil characterisation. Taking three soil types, soft clays, stiff clays and sands, the importance in practice of structure, anisotropy and natural variability are explored. Results of a numerical study and a case history were presented to illustrate the shortcomings of current …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Young Geotechnical Engineers Night and Annual General Meeting

A number of young geotechnical engineering graduates and students will individually give a 10 minute presentation on a range of interesting projects. Members of the Committee adjudicated and the winner(s) were presented with a certificate and a cash prize from a total pool of $300. The winner was Yun Hang Chok (Uni. of Adelaide). Aaron …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Geotechnical Aspects of the Alice Springs to Darwin Railway

The Alice Springs to Darwin Railway Project was one of the largest infrastructure projects undertaken in Australia and completes the latest link in Australia’s rail network. The project comprised over 1420 kms of earthworks and tracklaying, 97 bridges, 57 major railway cuttings (> 5 m deep), over 1,000 culverts, 2 million tonnes of ballast and …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Collapsing Soils from Australia and Thailand

The presentation defined the nature of collapsing soils and how such soils may be identified. Case studies of the unwanted effects of such soils on buildings were presented. The composition and comparative behaviour of four collapsing soils were discussed, one of the soils being a red brown loess from Thailand. The remaining soils were from …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Wind Farms and Tall Structures

Several speakers provided presentations on geotechnical aspects of wind farm and transmission line projects recently completed in South Australia. Getting the foundation investigation and design wrong for these unique tall structures may have significant consequences.

Posted in 2005 Meetings, Meeting, South Australia and NT |

Rissa and Pizza

A drammatic and fascinating landslide occurred in the Norwegian town of Rissa in 1978. It was a retrogressive landslide in the notorious quick soils of Scandinavia and Canada. In this superb 45 minute, NGI Norwegian Geotechnical Institute produced video, drammatic footage of the landslide was preseted as it unfolded, as well as rescue operations and …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Flexible uPVC Pipes in Trenches with Stiff Clay Walls Subjected to Construction Traffic

This presentation described numerical modelling of field tests involving traffic loading on flexible uPVC pipes buried in sand within trenches formed in stiff clay. The tests were part of a commissioned program to verify safe cover heights for the spirally-wound, uPVC pipes. The modelling was performed using three-dimensional finite elements with the backfill soil represented …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Reliability-Based Geotechnical Design

In an effort to harmonize with structural codes, geotechnical design codes around the world are beginning to migrate towards some form of reliability-based design (RBD). Significant steps in this direction can be found in, for example, Eurocode 7 (1997), Australian Standard AS 4678 (2002), NCHRP Report 24-17 (2002) and the Canadian Foundation Engineering Manual (2004). …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Geotechnics – The Hidden Face of Civil Engineering

Professor Harry Poulos will present an introductory talk on geotechnics, an important part of civil engineering. The talk will be illustrated by several case examples, and geomechanics will be of great interest to university students and geotechnical professionals alike. Professor Poulos has an impressive background in both academia and the profession. A large number of …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Kaiapit Landslide, Papua New Guinea

An exceptionally large compound rockslide, with estimated volumes between 1.3 and 2 billion m³, occurred in the Saruwaged Range, Papua New Guinea on the 5th September 1988. The rockslide developed into three major debris avalanches which flowed some 6.5 km down two river valleys and covered an area of about 11 km³, killing seventy four …more

Posted in 2005 Meetings, Meeting, South Australia and NT |

Seminar: Innovative Technologies for Pavements and Earthworks

Posted in 2006 Meetings, Meeting, South Australia and NT |

Who Needs Constitutive Models?

The lecture will chart the development of constitutive models used to represent the mechanical behaviour of soils and provide an overview of the principles and the main features of exsiting, widely used constitutive models for soil. The clear intention is to emphasise the physical basis of these models, rather than their mathematical complexity.

Posted in 2006 Meetings, Meeting, South Australia and NT |

Modelling Cover Systems for Waste & Unsaturated Soils Mechanics in Engineering Practice

One of the most active unsaturated soil mechanics applications over the past two decades has been the design of cover systems associated with mine wastes; particularly “store and release” (or evaporative) covers. Cover systems appear to be a success story for unsaturated soil mechanics; however, it is time to stop and ask the question, “Are …more

Posted in 2006 Meetings, Meeting, South Australia and NT |

Eureka Tower, A Bored Pier Foundation Story

The Eureka Tower Project is a 300 m high 88 level residential building, constructed in the Southbank precinct of Melbourne, Australia. The site is underlain by complex geology, including near surface soft clays, a shallow layer of Quaternary Age basalt which covers part of the site, a lower very high strength basalt layer at about …more

Posted in 2006 Meetings, Meeting, South Australia and NT |