Location
Arlington, Virginia
Date
14 Aug 2008, 2:15pm - 4:00pm
Abstract
Deep Dynamic Compaction technique was used to improve soil bearing capacity in one of the project in Pakistan. It was first project in the country where Deep Dynamic Compaction technique was used for soil improvement. The soil at construction site composed of alluvial deposits. The sub-surface profile with in the depth of influence of proposed structure comprised of different layers of varying thickness within the construction site. The top 1-2 meter strata was an imported fill compacted in layers and composed of sandy silty clayey soil with percentage of fines as high as 75 percent The water table was located at 12 m depth. The construction alternatives included deep foundation and improvement of bearing capacity using dynamic compaction technique; the later was adopted in view of the economy of the project. The depth and degree of improvement was evaluated by comparing pre to post compaction Standard Penetration Tests (SPT) and measuring depth of the crater after each drop. The paper discusses briefly the compaction design, methodology for evaluation of effectiveness and resultant improvement in depth and lateral direction. The results of the compaction program of research project have also been compared with those of various case histories.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, 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
Ali, Liaqat and Ali, Sarfraz, "Enhancement of Bearing Capacity by Dynamic Compaction: A Case History" (2008). International Conference on Case Histories in Geotechnical Engineering. 16.
https://scholarsmine.mst.edu/icchge/6icchge/session07/16
Enhancement of Bearing Capacity by Dynamic Compaction: A Case History
Arlington, Virginia
Deep Dynamic Compaction technique was used to improve soil bearing capacity in one of the project in Pakistan. It was first project in the country where Deep Dynamic Compaction technique was used for soil improvement. The soil at construction site composed of alluvial deposits. The sub-surface profile with in the depth of influence of proposed structure comprised of different layers of varying thickness within the construction site. The top 1-2 meter strata was an imported fill compacted in layers and composed of sandy silty clayey soil with percentage of fines as high as 75 percent The water table was located at 12 m depth. The construction alternatives included deep foundation and improvement of bearing capacity using dynamic compaction technique; the later was adopted in view of the economy of the project. The depth and degree of improvement was evaluated by comparing pre to post compaction Standard Penetration Tests (SPT) and measuring depth of the crater after each drop. The paper discusses briefly the compaction design, methodology for evaluation of effectiveness and resultant improvement in depth and lateral direction. The results of the compaction program of research project have also been compared with those of various case histories.
