Response of framed buildings on separate footings to tunnelling: a hybrid modelling study

Spaggiari, Chiara; Tang, Chuanjin; Boldini, Daniela; Marshall, Alec

Abstract

Within the framework of hybrid geotechnical modelling, the coupled centrifuge-numerical modelling (CCNM) technique, developed at the University of Nottingham Centre for Geomechanics (NCG), is becoming a well-established approach to study the interaction between tunnel excavation, related soil movements, and induced response of affected structures. The CCNM technique involves a centrifuge model that includes the tunnel, soil, and foundation system, and a parallel finite element numerical model schematising the structure. Displacement and loading data at the structure-foundation interface are shared between the centrifuge and numerical domains in "real-time", such that a global evaluation of the interactions occurring can be captured for buildings that require a higher level of detail to be fully described. This study focused on the application of CCNM technology to the analysis of a 2D bare frame with separate strip footings running parallel to the tunnel axis. The frame geometry is consistent with previous "conventional" centrifuge tests (i.e. not hybrid), involving a small-scale physical model of the building. As such, the presented CCNM test aims to provide benchmark data to validate the hybrid modelling method before considering frame configurations with infills. The findings are presented for a case in which the foundation rests on the soil surface.

Citation

Spaggiari, C., Tang, C., Boldini, D., & Marshall, A. (2024, October). Response of framed buildings on separate footings to tunnelling: a hybrid modelling study. Presented at 5th European Conference on Physical Modelling Geotechnics, Delft, The Netherlands

• Presentation Conference Type: Edited Proceedings
• Conference Name: 5th European Conference on Physical Modelling Geotechnics
• Start Date: Oct 2, 2024
• End Date: Oct 4, 2024
• Acceptance Date: Apr 16, 2024
• Publication Date: Oct 5, 2024
• Deposit Date: Apr 18, 2024
• Publicly Available Date: Oct 5, 2024
• Peer Reviewed: Peer Reviewed
• Book Title: Proceedings of the 5th ECPMG 2024
• DOI: https://doi.org/10.53243/ECPMG2024-23
• Public URL: https://nottingham-repository.worktribe.com/output/33833595
• Publisher URL: https://www.issmge.org/publications/publication/response-of-framed-buildings-on-separate-footings-to-tunnelling-a-hybrid-modelling-study
• Related Public URLs: https://tc104-issmge.com/ecpmg-2024/