Mechanical Performance of Deep Circular Caisson Sinking in Deep Layered Soft Soil
Table 1
Composition and characteristics of foundation soil.
The number of soil layer
The name of soil layer
The description of soil layer
Average depth (m)
①1
Miscellaneous fill
It is mainly composed of construction waste, crushed gravel, sand, and clayey soil. Locally, there are large stones and crushed stones, accounting for 15% and 30%, respectively. The rest are sand, silt, and clay particles, with poor sorting and poor soil uniformity
2.65
①2
Clay
It is mainly composed of clay with high dry strength and toughness
1.23
②1
Silt mixed with silt
The silt content is about 5%–10%, and the rest are mostly silt characteristics
3.86
②2
Silt with sludge
The silt content is 10%–40%, and the distribution is uneven
6.09
②3
Sludge
High pressure shrinkage type, the content of silt and fine sand is about 5%–15%, and there is a little more in some parts
18.47
②4
Slit with sludge
The sludge content is unevenly distributed and contains a small amount of shell debris, showing medium, and low compressibility
6.09
③1
Mucky clay
Medium high pressure compressibility, fine scale, uneven distribution of soil layer, mixed with thin sand layer
10.76
③3
Clay silt
Low compressibility and uniform distribution
1.74
⑤3
Pebbles
The content of sand is about 20%, the content of muddy soil is about 20%, and the content of pebble is about 60%
