Vacancies

Msc topic Bam & Arcadis

MSc topic: “Automated monitoring data interpretation and back analysis of deep excavations for the New Terneuzen Lock”

KEY WORDS: geotechnical monitoring, FEM analysis, Python, design automation, undrained behavior

 

INTRODUCTION

In 2018 the contractor’s alliance of Sassevaart started construction of one of the world’s largest sea locks to date at Terneuzen, NL. The lock heads of the 500 m long lock are being constructed in deep excavations up to 25m below surface level reaching stiff Tertiary Boom clay and glauconite sands. The deep excavations use a combination of dry and submerged excavations within anchored diaphragm and combined walls. The FEM software Plaxis was used for the design of the excavations. Before and during construction the site is extensively monitored with a.o. inclinometer tubes, settlement markers, swell measurements etc. that generate an extensive dataset.

MAIN OBJECTIVE

The main objective of this MSc thesis study is to automate the interpretation process of extensive amounts of monitoring data generated with the use of e.g. Python coding and to couple this to the original FEM models to automatically back fit the monitoring results. The resulting model should lead to an evaluation of undrained behavior of the Tertiary Boom clay, and how this compares to the undrained model used in the design stage.

SUBOBJECTIVES

he following objectives should be assessed in the MSc study:

  • Literature study on drained and undrained FEM modelling of a deep excavation, deep excavation monitoring and automated data processing.
  • Create a tool to automate the interpretation process of extensive amounts of monitoring data generated with the use of Python coding.
  • Perform automated FEM back analysis to correlate the FEM model to the monitoring data.

LOCATION

The MSc position shall be at BAM Gouda / Arcadis Rotterdam. For further information please contact Mr. Outer lock head being excavated (photo: VNSC) Impression of the New Sea Lock at Terneuzen Thomas Nijssen (BAM Infraconsult) at +31 (0) 6 29.26.93.95 or Mr. Ad Verweij (Arcadis) at +31 (0)6 21.70.30.91.

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