Abstract
This paper summarizes the inverse analyses that explicitly considered hydrodynamic time effects and the results of such optimizations for the supported excavation for the Simpson Querry Biomedical Research Center (SQBRC) in Chicago. To evaluate hydrodynamic effects arising from pore pressure dissipation, consolidation stages were included in finite element simulations of the excavation to explicitly model the time effects. Both stiffness parameters and hydraulic conductivity were computed based on optimization using the lateral wall movements during excavation. The resulting optimized parameters considering the time effect are compared with those using only undrained construction stages to assess the changes in parameter values that arise from explicitly considering the time effects. Conclusions are drawn with respect to the applicability of the conventional undrained assumption for excavations through clay.
Original language | English (US) |
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Title of host publication | Geotechnical Special Publication |
Editors | T. Matthew Evans, Nina Stark, Susan Chang |
Publisher | American Society of Civil Engineers (ASCE) |
Pages | 305-314 |
Number of pages | 10 |
Edition | GSP 350 |
ISBN (Electronic) | 9780784485309, 9780784485316, 9780784485323, 9780784485330, 9780784485347, 9780784485354 |
State | Published - 2024 |
Event | Geo-Congress 2024: Foundations, Retaining Structures, Geosynthetics, and Underground Engineering - Vancouver, Canada Duration: Feb 25 2024 → Feb 28 2024 |
Publication series
Name | Geotechnical Special Publication |
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Number | GSP 350 |
Volume | 2024-February |
ISSN (Print) | 0895-0563 |
Conference
Conference | Geo-Congress 2024: Foundations, Retaining Structures, Geosynthetics, and Underground Engineering |
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Country/Territory | Canada |
City | Vancouver |
Period | 2/25/24 → 2/28/24 |
Funding
The funding for the work reported herein was provided by a National Science Foundation grant CMMI-1603060. The support of Dr. Richard Fragaszy is greatly appreciated. Hayward Baker, Inc. was the excavation support subcontractor and provided much assistance throughout the project.
ASJC Scopus subject areas
- Civil and Structural Engineering
- Architecture
- Building and Construction
- Geotechnical Engineering and Engineering Geology