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Design of vibroflotation
Vibro compaction
The design of vibro compaction method is mainly based on experiment and engineering practice.
Compaction depth
The stress distribution and foundation soil strength can be determined according to the load of upper building.The formula of calculation is accorded to the standard of building foundation.
Compaction scope
1) the strip foundation or independent foundation can only be used in the base range.
2) raft base and box base are usually piled on the whole foundation, and 1-3 rows of bollards can be arranged according to the need.
Space of piles and piling method
A normal triangular or square style layout is generally adopted.There are several methods for pile spacing design:
1) field test method.
2) estimation of filling volume.
3) empirical formula method.
Vibro replacement
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