Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
location:
home> Online First
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Model test of vertical and radial soil pressure test and reinforcement effect research under dynamic compaction
DOI:
10.16355/j.tyut.1007-9432.20220689
abstract:
To study the influence of different tamping methods on the reinforcement effect of sand dynamic compaction from the perspective of soil stress distribution characteristics. The dynamic compaction model test was carried out in the outdoor field to monitor the vertical and radial soil pressure in the soil and falling weight acceleration during the tamping process, and the displacement in the soil was analyzed by numerical simulation method. It is concluded that in the construction of dynamic compaction method, the vertical soil pressure waveform is the shock wave waveform or the vibration attenuation wave shape, and the radial earth pressure waveform is the impact waveform; There are two reinforcement modes in the process of dynamic compaction, the soil under the tamping point is mainly vertically compacted, while the soil side of the tamping point also has significant radial compaction; At the same level of dynamic compaction, heavy falling weight is suitable for deep soil and radial soil reinforcement, light falling weight is suitable for rapid reinforcement of shallow soil. The research results have a certain guiding meaning for the selection of tamping methods of the same energy level dynamic compaction.
Keywords:
Dynamic compaction; Tamping methods; Reinforcement effect; Model test; The same level dynamic compaction