Elastoplastic Solutions to Predict Tunneling-Induced Load Redistribution and Deformation of Surface Structures
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 145, Issue 4
Abstract
In this paper, an elastoplastic two-stage analysis method is proposed to model tunneling-induced soil-structure interaction and incorporated into a computer program called Analysis of Structural Response to Excavation (ASRE). This solution allows considering both vertical and horizontal greenfield ground movements, gap formation and slippage, continuous or isolated foundations, and a variety of structural configurations and loading conditions. After introducing the proposed formulation, the model predictions are first compared with previously published data for validation. Then, to isolate the effects of various structural characteristics (relative beam-column stiffness, presence of a ground-level slab, column height, and number of stories) and foundation types (continuous versus isolated), several example structures are analyzed. Results demonstrate the value of the proposed analysis method to study a broad range of building characteristics very quickly, and show how the soil-structure interaction occurring due to underground excavations is altered by both foundation and superstructure configurations. In particular, the difference in behavior between equivalent simple beams and framed structures on separated footings is clarified.
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Acknowledgments
This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) [EP/N509620/1]. The research materials supporting this publication can be accessed at https://doi.org/10.17863/CAM.25766.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 145 • Issue 4 • April 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Aug 12, 2017
Accepted: Sep 14, 2018
Published online: Jan 28, 2019
Published in print: Apr 1, 2019
Discussion open until: Jun 28, 2019
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