Location
St. Louis, Missouri
Date
02 Jun 1993, 9:00 am - 12:00 pm
Abstract
Over the last six years, Helical Piers have been utilized as compression members in the remedial repair of residential and light commercial structures. Current installation techniques create a small offset between the pier shaft and the grade beam or footing being underpinned. The purpose of this study was to examine the effects of the eccentric load that is applied to the top of the shaft on the Helical Pier. Three different sizes of piers were installed at a building site where the soil is predominantly clay. Compressive loads were applied, and data was recorded from which bending moments versus depth, stress distributions, and angular deflections at the top of the shaft were developed. Results show Helical Pier behavior compares with piles under lateral loading conditions. The specific loads required will determine which pier type to use.
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
Seider, Gary, "Eccentric Loading of Helical PiersTM for Underpinning" (1993). International Conference on Case Histories in Geotechnical Engineering. 22.
https://scholarsmine.mst.edu/icchge/3icchge/3icchge-session01/22
Eccentric Loading of Helical PiersTM for Underpinning
St. Louis, Missouri
Over the last six years, Helical Piers have been utilized as compression members in the remedial repair of residential and light commercial structures. Current installation techniques create a small offset between the pier shaft and the grade beam or footing being underpinned. The purpose of this study was to examine the effects of the eccentric load that is applied to the top of the shaft on the Helical Pier. Three different sizes of piers were installed at a building site where the soil is predominantly clay. Compressive loads were applied, and data was recorded from which bending moments versus depth, stress distributions, and angular deflections at the top of the shaft were developed. Results show Helical Pier behavior compares with piles under lateral loading conditions. The specific loads required will determine which pier type to use.
