Abstract
Abstract Floating geosynthetic encased columns (GEC) are an increasingly popular method of strengthening weak subsoil. Design of floating columns is a difficult and not fully recognized issue. This paper treats the floating GEC column as a special kind of “pile” and its bearing capacity is calculated using five selected methods for calculating the bearing capacity of piles based on CPTU penetration tests. The calculations were done on the basis of insitu tests carried out on one of the sections of the Bargłów Kościelny bypass. The paper contains a comparison of the bearing capacities of floating GEC columns calculated with different methods based on CPTU penetration tests.
Highlights
A floating column is a column with a base in weak subsoil
This paper treats the floating geosynthetic encased columns (GEC) column as a special kind of “pile” and its bearing capacity is calculated using five selected methods for calculating the bearing capacity of piles based on CPTU penetration tests
The paper contains a comparison of the bearing capacities of floating GEC columns calculated with different methods based on CPTU penetration tests
Summary
A floating column is a column with a base in weak subsoil. Floating columns are an increasingly popular method of strengthening weak subsoil, mainly for economic and technological reasons [1]. Guidelines for the design of reinforcement for geosynthetic encased columns (GEC) [2] apply only to end-bearing columns, and there are no guidelines for designing reinforcement for floating columns. The floating GEC column can be treated as a special kind of “pile” and its bearing capacity can be calculated with methods based on CPTU penetration tests [3]. Qsk column shaft capacity qt corrected cone resistance zk depth of the column base
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