Densification mechanism of granular soil under dynamic compaction of proceeding impacts

Jia, Mingxing; Yang, Yong; Liu, Bo; Wu, Su Jun

doi:10.1007/s10035-021-01136-z

Cited by 2 publications

(1 citation statement)

References 30 publications

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“…Regarding the mechanism of ground improvement and influencing factors, Wu et al [15] studied the compaction behavior of soil aggregate mixed ground and divided the soil into three zones based on the distribution of stress waves, namely an impact strengthened zone, a plastic stress wave strengthened zone, and an elastic zone in which the strength of the soil is not reinforced. Jia et al [16] elucidated the mechanism of loose granular soil reinforcement from the particle scale. Chen et al [17] conducted experiments to investigate the crushing effect of gravel soil during DC and proposed a constitutive model applicable to calculating the behavior of gravel soil.…”

Section: Introductionmentioning

confidence: 99%

Field Testing and Numerical Simulation of the Effectiveness of Trench Isolation for Reducing Vibration Due to Dynamic Compaction

Zheng,

Lan,

Pan

et al. 2023

Applied Sciences

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Dynamic compaction is a widely used method to strengthen the foundation, which can cause significant impacts on surrounding structures, making vibration control measures necessary. This study investigates the effectiveness of isolation trenches in reducing ground vibration caused by dynamic compaction in a typical multi-layered alluvial soil foundation adjacent to the Yangtze River. A combination of field testing and numerical simulation was employed to evaluate the vibration isolation effect of trenches at different depths and locations. The results show that trenches have a significant vibration isolation effect on the side away from the tamping point, but they can have an amplifying effect between the trench and tamping point. The effectiveness of the isolation trenches increases with deeper trenches and distance from the tamping point, but the amplification effect decreases with increasing depth. Therefore, when employing trenches, reinforcement measures must be adopted, and a suitable trench depth should be selected. The closer the isolation trench to the dike, the better the protection will be. The study provides effective guidance for designing isolation trenches in similar dynamic compaction processes, emphasizing the importance of considering spatial attenuation characteristics and selecting appropriate trench depths and locations.

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Section: Introductionmentioning

confidence: 99%