{"id":8240,"date":"2026-03-17T21:06:23","date_gmt":"2026-03-17T08:06:23","guid":{"rendered":"https:\/\/websitedesignhosting.co.nz\/motovated\/?post_type=dt_portfolio&p=8240"},"modified":"2026-07-21T18:57:53","modified_gmt":"2026-07-21T06:57:53","slug":"slurry-wall-finite-element-analysis","status":"publish","type":"dt_portfolio","link":"https:\/\/websitedesignhosting.co.nz\/motovated\/project\/slurry-wall-finite-element-analysis\/","title":{"rendered":"Slurry Wall for Amsterdam Subway Station"},"content":{"rendered":"

[vc_row equal_height=”yes” type=”vc_default” css=”.vc_custom_1575291446524{margin-bottom: -50px !important;}”][vc_column width=”1\/2″ offset=”vc_col-lg-offset-0 vc_col-lg-8 vc_col-md-offset-0 vc_col-md-7 vc_col-sm-offset-0″ css=”.vc_custom_1575290895173{padding-bottom: 50px !important;}”]

<\/div>
<\/div>

Slurry Wall for Amsterdam Subway Station<\/h1><\/div><\/div>[vc_column_text css=”.vc_custom_1784532706161{margin-bottom: 30px !important;border-left-width: 3px !important;padding-left: 20px !important;border-left-style: solid !important;border-color: rgba(0,0,0,0.1) !important;}”]Client: De Weger Architecten and Ingenieursbureau<\/span><\/p>\n

Category:<\/span> Per review Mechanical Design<\/span>[\/vc_column_text]

<\/div>

Background<\/h3><\/div><\/div>[vc_column_text css=”.vc_custom_1784532961533{padding-bottom: 30px !important;}”]In 1997 De Weger Architecten and Ingenieursbureau in The Netherlands requested an analysis of the slurry wall installation relating to the 23 meter deep excavation on the North-South Metro line (Rokin Station) in Amsterdam. The analysis had to provide insight into:<\/p>\n
    \n
  • Settlements at and below the surface as a result of the installation process and subsequent excavation (which including dewatering).<\/li>\n
  • Ground water level changes resulting from dewatering inside the building pit.<\/li>\n
  • The risk of bursting through the building pit if dewatering was to be discontinued before the metro station\u2019s concrete floor had been installed.<\/li>\n<\/ul>\n

    The FEA had already been done on this project, however the Company needed to validate the results with an industry expert.[\/vc_column_text]

    <\/div>

    Solution<\/h3><\/div><\/div>[vc_column_text css=””]A fully coupled pore fluid flow stress analysis, including all phases of the building\u00a0 process and a potential failure of the installation of the concrete floor, was carried out.
    \nIt covered the following steps:<\/p>\n
      \n
    1. Installation of the slurry wall.<\/li>\n
    2. Seven steps of: excavation, dewatering, and installation of a supporting strut.<\/li>\n
    3. Installation of the building floor.<\/li>\n
    4. Discontinuation of dewatering (this step was also simulated without the concrete floor).<\/li>\n<\/ol>\n

      The analysis model contained dedicated soil material models tailored to the current ground conditions, including the permeability to accurately describe consolidation and ground water flow over time.<\/p>\n

      [\/vc_column_text]

      <\/div>
      <\/div>

      Results<\/h3><\/div><\/div>[vc_column_text css=””]The analysis provided confidence in the proposed building method, which lead to the successful installation of the slurry wall. Specifically:<\/p>\n
        \n
      • The prediction of the surface settlements were a close match to reality and this provided confidence in the modelling techniques applied.<\/li>\n
      • It was clearly demonstrated that stopping dewatering for a two month period would, in principle, be acceptable. This data provided a good understanding of the \u2018what-ifs\u2019 in the event that the project was delayed.<\/li>\n
      • It was demonstrated that stresses in the slurry wall were within acceptable values throughout the building process.<\/li>\n<\/ul>\n

        [\/vc_column_text]

        <\/div>
        <\/div>
        “The accuracy of the analysis results, and the speed of delivery, created a true confidence for us in the building method. It has also been very helpful in our risk assessments.\u201d<\/p>\n

        Guido Visser, Former De Weger Engineer<\/b><\/p>\n

        <\/div><\/div>[\/vc_column][vc_column width=”1\/2″ css=”.vc_custom_1575291023632{padding-bottom: 50px !important;}” offset=”vc_col-lg-4 vc_col-md-5″]