CHALLENGING DESIGN: FOUNDATIONS FOR TALL BUILDINGS

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CHALLENGING DESIGN: FOUNDATIONS FOR TALL BUILDINGS

Author: Helen Chow, Frances Badelow | Size: 0.81 MB | Format: PDF | Quality: Unspecified | Publisher: Coffey Geotechnics Pty Ltd | Year: MARCH2012 | pages: 10

The design of foundations for tall buildings is a challenging task for geotechnical engineers as they are required to consider all geotechnical aspects of the project, with the aim of identifying and managing the geotechnical risks. In the design of foundations for tall buildings, lateral loadings are of great importance as are the vertical loadings. A small rotation at the foundation will be magnified to a very large magnitude at the top of the structure due to the height of the building, which will affect the serviceability and functionality of the building.
This paper presents the foundation design process for two cases - the 1km high Nakheel Tower in Dubai and the 151 storey Incheon Tower in South Korea. The role of the authors as an internal reviewer of the analyses and an engineer undertaking the numerical analyses during the different project phases will be discussed. Analyses of the proposed foundation were carried out by computer programs using the boundary element method and 2D & 3D finite element methods based on the limit state approach. Key issues, in particular the overall performance of the foundation, will be addressed.
The paper concludes with a summary of the design processes and the basic design criteria for tall buildings.

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