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A cantilever approach to estimate bending stiffness of buildings affected by tunnelling

Haji, Twana Kamal; Haji, Twana; Marshall, Alec M.; Tizani, Walid

Authors

Twana Kamal Haji

Twana Haji



Abstract

The evaluation of the effect of tunnel construction on buildings is a problem being faced by engineers around the world. Building bending stiffness is an important parameter in tunnel-soil-structure interaction analyses. The construction of a new tunnel influences an existing building via induced ground movements, and the existence of a building also affects ground displacements due to tunnelling via its stiffness and weight. The magnitude of the effect depends on the properties of the building and foundation as well as the complex soil-structure interactions that occur. In this paper, an approach is proposed in which the building response to tunnelling is related to the bending of a cantilever beam and empirical-type relationships are developed to predict building bending stiffness. This approach is relevant to cases where the building is perpendicular to the tunnel axis and its nearest edge does not overlap more than half of the tunnel cross-section. Rigorous finite element analyses are used to evaluate the response of buildings to ground displacements and expressions are provided which relate three-dimensional building bending stiffness to a simple beam theory expression. The results show that lower storeys have a proportionally higher stiffness effect than higher storeys. In addition, the parameters that affect the global behaviour of the building, such as component stiffness and geometry, are studied. The suggested approach provides a relatively quick and easy way of accurately evaluating building bending stiffness for use within tunnel-soil structure interaction analyses.

Citation

Haji, T. K., Haji, T., Marshall, A. M., & Tizani, W. (2018). A cantilever approach to estimate bending stiffness of buildings affected by tunnelling. Tunnelling and Underground Space Technology, 71, 47-61. https://doi.org/10.1016/j.tust.2017.08.005

Journal Article Type Article
Acceptance Date Aug 3, 2017
Online Publication Date Aug 16, 2017
Publication Date 2018-01
Deposit Date Aug 4, 2017
Publicly Available Date Aug 17, 2018
Journal Tunnelling and Underground Space Technology
Print ISSN 0886-7798
Electronic ISSN 0886-7798
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 71
Pages 47-61
DOI https://doi.org/10.1016/j.tust.2017.08.005
Keywords Soil-structure interaction, Tunnel, Building, Bending stiffness, Cantilever behaviour
Public URL http://eprints.nottingham.ac.uk/id/eprint/44704
Publisher URL http://www.sciencedirect.com/science/article/pii/S0886779817302328
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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