NUMERICAL ANALYSIS

EXPERIENCE AND EXPERTISE IN NUMERICAL ANALYSIS

Numerical modelling is now a highly developed specialised field with the ability to model very complex situations. These analytical tools are used extensively for analysis and prediction. However, the key focus in this area is to ensure any final designs formulated using the results of numerical modelling are calibrated within the framework of experience of performance of similar structures in similar geological environments.

PERSONNEL

Strath Clarke, a Principal with Pells Sullivan Meynink Pty Ltd, has 14 years experience in structural design for geotechnical works, and has particular expertise in two and three three dimensional structural analysis using the programs MicroStran and FLAC3D.

Dr Andrew de Ambrosis and Dr Gareth Swarbrick are Associates, both with more than 10 years experience in the development of engineering software and in conducting numerical analyses for stress-displacement, and seepage analyses. They are proficient in various commercially available numerical packages, including: Phase2, FLAC, FLAC3D, 3DEC, UDEC, Slide and SEEP/W.

In addition to in house software systems for handling and processing data, our numerical analyses include the following programs:

• PHASE2 hybrid FE/BE non linear analysis, Rocscience.
• EXAMINE-3D 3D BE analysis, Rocscience.
• JBLOCK kinematic stability of underground excavations, Esterhuizen.
• Examine-TAB analysis of tabular mining layouts, Rocscience.
• EXAMINE-2D 2D BE analysis, Rocscience.
• 3DEC 3D discrete element modelling, ITASCA.
• UDEC 2D universal discrete element modelling, ITASCA.
• SEEP/W 2D and 3D groundwater modelling, Geo-Slope, Canada.
• SAP2000 2D and 3D structural and finite element analysis.
• MicroStran 2D frame analysis.
• SLOPE/W 2D slope stability analysis, Geo-Slope, Canada.
• SLIDE-2D slope stability analysis, Rocscience.
• GINT borehole and test pit engineering logs, geotechnical sections.
• DIPS analysis of structural data using spherical projection techniques, Rocscience.
• FLAC 2D dynamic relaxation, ITASCA.
• FLAC3D 3D dynamic relaxation, ITASCA.
• FLEA Finite Layer Elastic Analysis, Univ Sydney.
• FEAR Finite Element Analysis of Rafts, Univ Sydney.

PROJECTS

Batu Hijau, Indonesia	Analysis for the assessment of rockmass strengths, pit wall stability, and design of adits and caverns located within the pit wall.
Burunda Bus Tunnel, Brisbane	Large and small strain 2D analysis for forensic analysis of cracked tunnel lining.
Chuquicamata, Chile	Forensic investigation. Involved 2D and 3D numerical analyses of transfer cavern collapse close to pit face.
Lane Cove Tunnel, Sydney	2D and 3D numerical modelling for the design of various tunnel sections, including dual road tunnels with low rock cover and high surcharge loads and collapse recovery works.
Cross City Tunnel, Sydney CBD	Forensic numerical investigation of cavern failure, using 3D and 2D numerical analyses.
Chatswood to Epping Rail Line, Sydney	Numerical modelling for tender, detailed design and construction stage. Work included integrated 2D and 3D finite and distinct element analyses.
Power Street Bridge, Melbourne	Numerical modelling for design of remedial works. Bridge abutments, approach slabs, piles and wing walls were discretely modelled in 3D.
Multistorey Apartment Basement, Sydney CBD.	Integrated 2D and 3D modelling of a proposed basement excavation adjacent to live rail tunnels.
Tugun Rail, Gold Coast, Qld.	Concept stage design to assess settlement caused by shallow TBM on airport runway.
Multistorey Apartment Foundations, Waterloo, NSW	2D and 3D numerical modelling of pile soil interaction for the design of foundations.
Burnley Tunnel, Melbourne	Review of 2D and 3D analyses conducted for design of tunnel rectification works.
Rail Embankment, Hexham, NSW	Numerical modelling for the design of railway embankments in deep soft soil deposits.