ABSTRACT
Haga Station in Gothenburg requires a deep excavation with both bottom-up and top-down methods, supported by diaphragm walls, jet grouting ribs and struts. In this study, the excavation support is modelled with 2D and 3D finite element software, comparing their performance. 3D model provides a comprehensive analysis of spatial variations and stress distribution, while 2D model, although less detailed, is faster and requires fewer resources. The results emphasize the importance of selecting the appropriate modelling approach based on project complexity and resources, highlighting the key role of jet grouting ribs in maintaining structural stability of urban excavations.
