A simplified elastic analysis of tunnel-piled structure interaction
In urban areas, engineers often need to assess tunnelling-induced displacements of piled structures and the resulting potential for damage. This paper presents an elastic study of tunnel-pile-structure interaction through Winkler-based Two-Stage Analysis Methods (TSAMs), focusing on structural displ...
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| Format: | Article |
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Elsvier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/37917/ |
| _version_ | 1848795559895236608 |
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| author | Franza, Andrea Marshall, Alec M. Haji, Twana Abdelatif, Amged O. Carbonari, Sandro Morici, Michele |
| author_facet | Franza, Andrea Marshall, Alec M. Haji, Twana Abdelatif, Amged O. Carbonari, Sandro Morici, Michele |
| author_sort | Franza, Andrea |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In urban areas, engineers often need to assess tunnelling-induced displacements of piled structures and the resulting potential for damage. This paper presents an elastic study of tunnel-pile-structure interaction through Winkler-based Two-Stage Analysis Methods (TSAMs), focusing on structural displacements resulting from tunnel excavation beneath piled frames or simple equivalent beams. Comparison of results with 3D finite element analyses shows that the simple TSAM models are able to provide a good assessment of tunnelling-induced building displacements. Parametric analyses highlight the role of tunnel-pile interaction and the superstructure (stiffness, configuration, and pile-structure connections) in the global response of the tunnel-soil-building system. In particular, the effect that key parameters have on deflection ratios and horizontal strains are investigated. Results illustrate how piled foundations increase the risk of structural damage compared to shallow foundations, whereas structural stiffness can reduce building deformations. Flexural deformations are predominately induced by tunnel excavations beneath piles whereas horizontal strains at the ground level are negligible when a continuous foundation is included. Furthermore, it is illustrated that results based on buildings modelled as equivalent beams can differ considerably compared to when they are modelled as framed structures. Simple design charts are provided to estimate horizontal strains and deflection ratio modification factors based on newly defined relative axial and bending stiffness parameters which account for the presence of the piles. |
| first_indexed | 2025-11-14T19:34:01Z |
| format | Article |
| id | nottingham-37917 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:34:01Z |
| publishDate | 2017 |
| publisher | Elsvier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-379172020-05-04T18:28:55Z https://eprints.nottingham.ac.uk/37917/ A simplified elastic analysis of tunnel-piled structure interaction Franza, Andrea Marshall, Alec M. Haji, Twana Abdelatif, Amged O. Carbonari, Sandro Morici, Michele In urban areas, engineers often need to assess tunnelling-induced displacements of piled structures and the resulting potential for damage. This paper presents an elastic study of tunnel-pile-structure interaction through Winkler-based Two-Stage Analysis Methods (TSAMs), focusing on structural displacements resulting from tunnel excavation beneath piled frames or simple equivalent beams. Comparison of results with 3D finite element analyses shows that the simple TSAM models are able to provide a good assessment of tunnelling-induced building displacements. Parametric analyses highlight the role of tunnel-pile interaction and the superstructure (stiffness, configuration, and pile-structure connections) in the global response of the tunnel-soil-building system. In particular, the effect that key parameters have on deflection ratios and horizontal strains are investigated. Results illustrate how piled foundations increase the risk of structural damage compared to shallow foundations, whereas structural stiffness can reduce building deformations. Flexural deformations are predominately induced by tunnel excavations beneath piles whereas horizontal strains at the ground level are negligible when a continuous foundation is included. Furthermore, it is illustrated that results based on buildings modelled as equivalent beams can differ considerably compared to when they are modelled as framed structures. Simple design charts are provided to estimate horizontal strains and deflection ratio modification factors based on newly defined relative axial and bending stiffness parameters which account for the presence of the piles. Elsvier 2017-01-31 Article PeerReviewed Franza, Andrea, Marshall, Alec M., Haji, Twana, Abdelatif, Amged O., Carbonari, Sandro and Morici, Michele (2017) A simplified elastic analysis of tunnel-piled structure interaction. Tunnelling and Underground Space Technology, 61 . pp. 104-121. ISSN 0886-7798 Tunnelling; pile; soil-structure interaction; building response http://www.sciencedirect.com/science/article/pii/S0886779816302085 doi:10.1016/j.tust.2016.09.008 doi:10.1016/j.tust.2016.09.008 |
| spellingShingle | Tunnelling; pile; soil-structure interaction; building response Franza, Andrea Marshall, Alec M. Haji, Twana Abdelatif, Amged O. Carbonari, Sandro Morici, Michele A simplified elastic analysis of tunnel-piled structure interaction |
| title | A simplified elastic analysis of tunnel-piled structure interaction |
| title_full | A simplified elastic analysis of tunnel-piled structure interaction |
| title_fullStr | A simplified elastic analysis of tunnel-piled structure interaction |
| title_full_unstemmed | A simplified elastic analysis of tunnel-piled structure interaction |
| title_short | A simplified elastic analysis of tunnel-piled structure interaction |
| title_sort | simplified elastic analysis of tunnel-piled structure interaction |
| topic | Tunnelling; pile; soil-structure interaction; building response |
| url | https://eprints.nottingham.ac.uk/37917/ https://eprints.nottingham.ac.uk/37917/ https://eprints.nottingham.ac.uk/37917/ |