Location
San Diego, California
Presentation Date
30 Mar 2001, 10:30 am - 12:30 pm
Abstract
Dynamic compaction has become a popular method world-wide for deep improvement of loose soils in recent years. The method involves the repeated application of high-energy impacts on the soil surface using tampers weighing 10-20 Mg, dropping from heights of 10-20 m, compacting the soil strata to a considerable depth. Previous analytical methods have been used to investigate the effectiveness of dynamic compaction of loose soils, most of which were based on a rigid tamper striking a vertical soil column represented by springs, masses and dampers. This study analysed the dynamic compaction of loose soils under impact loads numerically, using ABAQUS© to generate response to rigid-body impacts of an axisymmetric elasto-plastic finite element (FE) representation of the soils. The analysis also included the stiff plug formed under the treatment area. Various comparisons were made in terms of the plug depth, the compression wave propagation, peak vertical particle accelerations with depth and the mass penetration. The peak vertical particle velocities at ground surface within some 50 metres were computed for estimation of environmental disturbance in the vicinity.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2001 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
Pan, J. L. and Selby, A. R., "Analysis of Dynamic Compaction of Loose Soils Under Impact Loads" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 4.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session02/4
Included in
Analysis of Dynamic Compaction of Loose Soils Under Impact Loads
San Diego, California
Dynamic compaction has become a popular method world-wide for deep improvement of loose soils in recent years. The method involves the repeated application of high-energy impacts on the soil surface using tampers weighing 10-20 Mg, dropping from heights of 10-20 m, compacting the soil strata to a considerable depth. Previous analytical methods have been used to investigate the effectiveness of dynamic compaction of loose soils, most of which were based on a rigid tamper striking a vertical soil column represented by springs, masses and dampers. This study analysed the dynamic compaction of loose soils under impact loads numerically, using ABAQUS© to generate response to rigid-body impacts of an axisymmetric elasto-plastic finite element (FE) representation of the soils. The analysis also included the stiff plug formed under the treatment area. Various comparisons were made in terms of the plug depth, the compression wave propagation, peak vertical particle accelerations with depth and the mass penetration. The peak vertical particle velocities at ground surface within some 50 metres were computed for estimation of environmental disturbance in the vicinity.
