TECHNICAL | DATA & DIGITAL
DESIGN AUTOMATION OF KALVEBOD TUNNEL SETTLEMENT ASSESSMENT
Design automation is evolving to include the integration of discipline specific software and the use of scripting tools to create workflows that allow the design to start earlier when input parameters are less refined. This means design changes can be easily accommodated, which gives increased value to the client, output quality, consistency, time, and cost savings
Dr Brian Adjetey Boye, a Senior Associate Director of Tunnelling and Geo-Digital with Jacobs, presented a paper entitled ‘Kalvebod Tunnel and Shaft Induced Settlement Automation Using Autodesk Dynamo Tool and Civil 3D’ at WTC 2022, in Copenhagen. The paper was co-authored by S. Botusharova, M. A. Jørgensen, and L. Erichsen. An abridged version is published here with the authors permission
INTRODUCTION The risks and impacts due to ground movement associated with tunnelling works in urbanised areas need to be assessed in the early stages of tunnelling projects (including route optioneering) as well as during the design and construction/commissioning of the project. This article describes the use of a novel method to
undertake the estimation of ground movement and building damage assessment. The approach renders the often tedious and time-consuming spreadsheet calculations into an automated workflow that is efficient, rapid, reliable and allows the damage assessment of 1000+ buildings and utilities. The developed tool was applied for the automatic
generation of ground movement data related to the construction of the 1.25km-long Kalvebod Brygge Skybrudstunnel Drainage Tunnel with three shafts, in Copenhagen (see Figure 1). The tool is known as TunDRA (i.e., Tunnel Damage Risk Assessments). It based on Autodesk Dynamo and Civil 3D, which have been used in the past for highway linear schemes, but this application is novel for tunnel settlements. The ground movements are predicted based on
Above figure 1: Plan of tunnel and shafts ALL IMAGES COURTESY OF JACOBS 26 | December 2023
empirical methods and can be estimated for any location in three-dimensional (3D) space. The tool also allows for the identification of affected buildings, particularly those with protected status and at the early stages of projects, such as route selection. The tool generates Computer Aided Design (CAD) ready contour lines in Civil 3D while pulling in alignment and ground surface information efficiently and therefore avoiding the need for manual data entry.
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