Location
St. Louis, Missouri
Date
02 Jun 1993, 2:30 pm - 5:00 pm
Abstract
The cylindrical ground anchors has gained wide acceptance as an economical and highly versatile anchoring method over the past decade, particularly due to fast and simple performance by using the soil/rock boring and grouting procedure. However, these cylindrical anchors reach very low bearing capacities when they are performed in such a soil as a clay, silt or sand. The paper is concerning with the set of data and results which are collected after the in situ investigations of some 30 short vertical anchors installed in clay and in silty sand, as well. The bearing capacity of cylindrical and spherical anchors were also compared. Spherical cavity at the bottom of the borehole was produced by controlled point blasting effect, which was studied in the first place. Finally, the proper analytical method for estimation of the ultimate uplift capacity was established, based on a very useful hypothesis of Vesie (1965) and some his later works, Vesie (1971). This model has showed a good agreement with field test pullout results.
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
Krajcer, M.; Muhovec, I.; and Pranjic, J., "Ground Anchor Bearing Capacity Improvement by Blasting in Bore-Hole" (1993). International Conference on Case Histories in Geotechnical Engineering. 33.
https://scholarsmine.mst.edu/icchge/3icchge/3icchge-session07/33
Ground Anchor Bearing Capacity Improvement by Blasting in Bore-Hole
St. Louis, Missouri
The cylindrical ground anchors has gained wide acceptance as an economical and highly versatile anchoring method over the past decade, particularly due to fast and simple performance by using the soil/rock boring and grouting procedure. However, these cylindrical anchors reach very low bearing capacities when they are performed in such a soil as a clay, silt or sand. The paper is concerning with the set of data and results which are collected after the in situ investigations of some 30 short vertical anchors installed in clay and in silty sand, as well. The bearing capacity of cylindrical and spherical anchors were also compared. Spherical cavity at the bottom of the borehole was produced by controlled point blasting effect, which was studied in the first place. Finally, the proper analytical method for estimation of the ultimate uplift capacity was established, based on a very useful hypothesis of Vesie (1965) and some his later works, Vesie (1971). This model has showed a good agreement with field test pullout results.
