Date
03 Jun 1988, 10:30 am - 5:30 pm
Abstract
Ground improvement techniques were used to meet the design requirements for a beach resort complex at Half Moon Bay on the Arabian Gulf. Extensive site exploration revealed upper layers consisting of loose to medium fine sand, having variable silt content. The original specification called for filling and ground improvement using Dynamic Compaction to achieve 100kN/m2 surface bearing capacity and 50% relative density at a depth of 10m. Dynamic Compaction (DC) and subsequent field testing, using full scale loading tests as well as CPT and SPT tests, proved that it was possible to achieve these requirements over most areas using dynamic compaction, however it was not suitable in a few other areas where ground response to DC was poor. Those areas contained silty layers and showed signs of rapid pore pressure build up under dynamic compaction, while dissipation was slow and penetration resistance remained poor. Therefore, it was decided to use pre-loading in those areas. Further testing and instrumentation showed that pre-loading was achieving the required ground improvement.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1988 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
Ghosh, N. and Tabba, M. M., "Experience in Ground Improvement by Dynamic Compaction and Preloading at Half Moon Bay – Saudi Arabia" (1988). International Conference on Case Histories in Geotechnical Engineering. 19.
https://scholarsmine.mst.edu/icchge/2icchge/icchge-session5/19
Experience in Ground Improvement by Dynamic Compaction and Preloading at Half Moon Bay – Saudi Arabia
Ground improvement techniques were used to meet the design requirements for a beach resort complex at Half Moon Bay on the Arabian Gulf. Extensive site exploration revealed upper layers consisting of loose to medium fine sand, having variable silt content. The original specification called for filling and ground improvement using Dynamic Compaction to achieve 100kN/m2 surface bearing capacity and 50% relative density at a depth of 10m. Dynamic Compaction (DC) and subsequent field testing, using full scale loading tests as well as CPT and SPT tests, proved that it was possible to achieve these requirements over most areas using dynamic compaction, however it was not suitable in a few other areas where ground response to DC was poor. Those areas contained silty layers and showed signs of rapid pore pressure build up under dynamic compaction, while dissipation was slow and penetration resistance remained poor. Therefore, it was decided to use pre-loading in those areas. Further testing and instrumentation showed that pre-loading was achieving the required ground improvement.
