A hybrid model for estimation of ground movements due to mechanized tunnel excavation
For prediction of ground movements caused by mechanized tunnel excavation, the authors propose hybrid modeling, which is a new simulation method. The method combines a submodel, comprising a finite element (FE) simulation, with a computationally efficient metamodel, or surrogate model. Hybrid modeling has three levels. In Level 1, a submodel is extracted from the global model; simulations are conducted in this submodel. Level 2 identifies uncertain soil parameters, based on measurements of surface settlement during excavation. In Level 3, tunneling process parameters can be optimized to control excavation-induced ground movements. The hybrid model is tested through a three-dimensional (3D) numerical simulation of the tunnel excavation, with results indicating that the method, with lower computational cost,s gives reliable responses for the ground around the tunnel.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/10939687
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Authors:
- Zhao, Chenyang
- Hölter, Raoul
- König, Markus
- Alimardani Lavasan, Arash
- Publication Date: 2019-7
Language
- English
Media Info
- Media Type: Web
- Features: Figures; References; Tables;
- Pagination: pp 586-601
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Serial:
- Computer-Aided Civil and Infrastructure Engineering
- Volume: 34
- Issue Number: 7
- Publisher: Blackwell Publishing
- ISSN: 1093-9687
- Serial URL: http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1467-8667
Subject/Index Terms
- TRT Terms: Excavation and tunneling; Finite element method; Mechanization; Predictive models; Seismicity; Simulation
- Subject Areas: Bridges and other structures; Geotechnology; Highways;
Filing Info
- Accession Number: 01782854
- Record Type: Publication
- Files: TRIS
- Created Date: Sep 24 2021 11:35AM