Location
St. Louis, Missouri
Date
02 Jun 1993, 9:00 am - 12:00 pm
Abstract
Mat foundations constructed in impermeable soils with a high groundwater table will experience a substantially high buoyancy force due to hydrostatic pressure. Conventional solutions to this problem are to increase the structural weight or install piles or anchors to counterbalance the uplift. These methods are costly, inefficient, and time-consuming. This paper presents a case study to show an innovated approach by using geocomposites to cope with the uplift in impermeable soils. Uplift pressure relief system consisted of geosynthetic materials was installed for a 14- story office and apartment building. The raft foundation was built at 50 feet below ground surface. A field monitoring and evaluation program has been implemented. Based on site experiences, this system proved to be rapid, simple, and cost effective for construction. Observations made to date about settlement, seepage, and porewater pressure have shown good performance of this system. The introduction of geocomposites to relieve uplift pressure appears to be practical as a rational solution for this type of foundation problem.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
3rd Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1993 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Chang, J. C. and Wu, J. Y., "Geocomposites for Foundation Uplift Pressure Control in Impermeable Soils" (1993). International Conference on Case Histories in Geotechnical Engineering. 37.
https://scholarsmine.mst.edu/icchge/3icchge/3icchge-session01/37
Geocomposites for Foundation Uplift Pressure Control in Impermeable Soils
St. Louis, Missouri
Mat foundations constructed in impermeable soils with a high groundwater table will experience a substantially high buoyancy force due to hydrostatic pressure. Conventional solutions to this problem are to increase the structural weight or install piles or anchors to counterbalance the uplift. These methods are costly, inefficient, and time-consuming. This paper presents a case study to show an innovated approach by using geocomposites to cope with the uplift in impermeable soils. Uplift pressure relief system consisted of geosynthetic materials was installed for a 14- story office and apartment building. The raft foundation was built at 50 feet below ground surface. A field monitoring and evaluation program has been implemented. Based on site experiences, this system proved to be rapid, simple, and cost effective for construction. Observations made to date about settlement, seepage, and porewater pressure have shown good performance of this system. The introduction of geocomposites to relieve uplift pressure appears to be practical as a rational solution for this type of foundation problem.
