Abstract
Combining with the situation of soil test site, the large scale experiment was studying about natural foundation, rammed soil-cement piles, CFG pile and gravel pil. A series of conclusions were given from p-s curve, the fitting curve, and the Angle of the stress ratio of pile-soil composite modulus. It has certain guiding significance for the design and construction of pile type, which is used in North China area.
Highlights
Combining with the situation of soil test site, the large scale experiment was studying about natural foundation, rammed soil-cement piles, CFG pile and gravel pil
CFG pile is a representative of the rigid pile, which is made of cement, fly ash, gravel, sand stone chips and belongs to high bond strength pile
In order to further study the static characteristics of different types of pile composite foundation, combining with the situation of soil test site, the large scale experimental were studied about natural foundation, rammed soil-cement piles, CFG pile and gravel pil
Summary
CFG pile is a representative of the rigid pile, which is made of cement, fly ash, gravel, sand stone chips and belongs to high bond strength pile It is together with soil between the pile and mattress layer to form a composite foundation, and it was used for the tall buildings. Gravel pile is a representative of the flexible pile, which is a gravel (pebbles) or coarse sand as the main materials such as composite pile foundation reinforcement At present, it has been relatively mature on view of the single pile composite foundation theory and the study of the static problem [1-6], many studies about different pile types in the same site with finite element numerical simulation. Gravel pile composite foundation: β=1.0; Rammed soil-cement piles composite foundation: β=0.9-1.0; CFG pile composite foundation: β=0.75-0.95
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