Deep Dynamic Compaction:  Practical and Cost-Effective Ground Improvement at the Port of Long Beach

Sieradzki, Mariusz P.; Patton, Bartlett W.; Sereno, Douglas J.; Wehrlen, Paul

doi:10.1061/9780784413067.065

Cited by 4 publications

(2 citation statements)

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“…Dynamic Compaction (DC) technique with tamping is a widely used soil improvement method to stabilize sandy and gravelly soils and waste landfills. Nowadays, there is considerable interest in DC due to its advantages over other soil improvement methods, such as the empirical nature of the design patterns of DC, applicability to a wide range of soil types (Ghassemi et al 2010, Feng et al 2013, Feng et al 2015, Li et al 2011, Feng et al 2010, Sieradzki et al 2013, Wang et al 2013, Chong et al 2020). Menard first introduced theoretical and practical concepts of dynamic compaction in 1957.…”

Section: Introductionmentioning

confidence: 99%

The Application of Artificial Intelligence Methods on the Optimizing Improvement Depth of Dynamic Compaction

Koohsari,

Alielahi,

Najafi

et al. 2023

Preprint

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Dynamic Compaction (DC) with tamping is one of the soil improvement methods and has been significantly accepted due to its advantages over other soil improvement methods. In this paper, an attempt has been made to use the fuzzy logic and Sugeno inference system to investigate the effect of the parameters involved in soil improvement operations using the DC method on the relative improvement depth. A correlation has been proposed to estimate the effective depth for the granular soils and compared to the fuzzy results. The Particle Swarm Optimization (PSO) algorithm has been used to achieve maximum improvement depth. The results indicate that the interaction between tamper weight and height of tamping plays the most important role in the design procedures. The results reveal that by using PSO, the maximum depth of improvement is increased by 33%. Studies show that the optimal tamper radius for most of the compaction patterns with medium to high applied energies is equal to 1.5 to 2 meters, the optimal numbers of drops are equal to 25, and the optimal grid spacing is equal to 6 to 7 meters. It should be noted that using PSO dynamic compaction pattern; the maximum improvement depth has been achieved.

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Section: Introductionmentioning

confidence: 99%

The Application of Artificial Intelligence Methods on the Optimizing Improvement Depth of Dynamic Compaction

Koohsari,

Alielahi,

Najafi

et al. 2023

Preprint

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show abstract

“…The rapid development of di erent ground improvement methods and their equipment is an indication of consultants and taskmasters' interest toward soil improvement methods. Soil improvement techniques result in the enhancement of the mechanical behavior as well as erosion resistance of soils [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Study of pile behavior by improvement of confining soils using frustum confining vessel

et al. 2017

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Abstract. A physical modeling apparatus made at Amirkabir University of Technology(FCV-AUT), called Frustum Con ning Vessel, is employed to determine the e ects of soil improvement on piles performance. The FCV-AUT is capable of linearly modeling the existing overburden stresses in the eld. Three types of Babolsar sand with relative densities between 20% and 70% were examined in these tests. Results of compression and tensile load tests on seven piles, with the embedment length to diameter ratio (D/B) of 9, were used to evaluate the e ects of soil improvement methods of soil densi cation as well as postgrouting on the piles performance. The results show that the increased bearing capacity by soil compaction from loose to medium state is greater than that of the medium to dense state. This increase has been observed to be a function of pile construction methods and pile tip conditions. Also, tip and/or side post-grouting enhanced the performance of bored and concrete precast piles by increasing soil-pile interaction and its bearing capacity. The results of pile load tests carried out on the FCV-AUT have been observed to be well-aligned with the static bearing capacity calculations based on the API method.

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WITHDRAWN: Evaluation of factors affecting the estimated improvement depth of dynamic compaction using fuzzy method and PSO

Koohsari

Alielahi

Najafi

et al. 2016

Soils and Foundations

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Deep Dynamic Compaction: Practical and Cost-Effective Ground Improvement at the Port of Long Beach

Cited by 4 publications

References 0 publications

The Application of Artificial Intelligence Methods on the Optimizing Improvement Depth of Dynamic Compaction

The Application of Artificial Intelligence Methods on the Optimizing Improvement Depth of Dynamic Compaction

Study of pile behavior by improvement of confining soils using frustum confining vessel

WITHDRAWN: Evaluation of factors affecting the estimated improvement depth of dynamic compaction using fuzzy method and PSO

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