Year: 2023
Type: book-chapter
Abstract: In order to study the influence range of vibroflotation device (VD) on the formation during vibroflotation pile densification, based on the physical model test of vibroflotation pile, the relationship curve of the main key construction control parameters during vibroflotation densification was established. The analysis showed that: under the test conditions, the main influence range of the VD on the surrounding soil pressure and acceleration was about 1r in the horizontal direction (r = VD radius), and about ± 2r in the vertical direction. The influence on pore water pressure in surrounding soil was about 2r in horizontal direction and ± 3r in vertical direction. In the process of densification, the pore pressure concentration in the soil around the VD had a certain delay compared with the increase of current intensity, which was manifested as the delayed accumulation effect of pore water pressure in the vibroflotation densification. The peak acceleration was 1r ahead of the peak current intensity, which showed the effect of vibroflotation pre-densification. The research conclusions could provide useful reference for the design and construction of vibroflotation piles.
DOI: 10.3233/atde230756
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
Awards: G5028546896, G5327740726, G6303667088
OpenAlex ID: W4389555727