Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stepped Loading of a Raft Foundation Supported on Deep Soft Clay Improved with Floating Stone Columns
Soil improvement techniques are necessary in construction on weak soils such as soft clays and loose sands, as these weak deposits usually suffer from excessive settlement, and low bearing capacity. Stone columns are one of the most effective and economic systems to improve soils by alteration of soil in-situ properties through the installation of columns composed of granular material. Generally, stone columns are constructed to penetrate the soft soil layer and rest on deeper strong soils (known as end bearing stone columns). However, for deep soft clay layers, end bearing stone columns are not cost effective, in which case using floating stone column is a better solution. This paper includes a benchmark problem of loading a raft foundation of a tank rested on a deep soft clay layer improved using a group of floating stone columns. The 3D numerical program PLAXIS 3D was adopted to investigate the effect of raft loading technique on the final consolidation settlement value and time. Two loading techniques were used, the first is by filling the tank using staged loading technique (slow loading), and the second by filling the tank using an immediate loading technique (quick loading). This benchmark example provide an understanding of the performance of floating stone columns when loaded in a staged loading as compared to quick loading.
Stepped Loading of a Raft Foundation Supported on Deep Soft Clay Improved with Floating Stone Columns
Soil improvement techniques are necessary in construction on weak soils such as soft clays and loose sands, as these weak deposits usually suffer from excessive settlement, and low bearing capacity. Stone columns are one of the most effective and economic systems to improve soils by alteration of soil in-situ properties through the installation of columns composed of granular material. Generally, stone columns are constructed to penetrate the soft soil layer and rest on deeper strong soils (known as end bearing stone columns). However, for deep soft clay layers, end bearing stone columns are not cost effective, in which case using floating stone column is a better solution. This paper includes a benchmark problem of loading a raft foundation of a tank rested on a deep soft clay layer improved using a group of floating stone columns. The 3D numerical program PLAXIS 3D was adopted to investigate the effect of raft loading technique on the final consolidation settlement value and time. Two loading techniques were used, the first is by filling the tank using staged loading technique (slow loading), and the second by filling the tank using an immediate loading technique (quick loading). This benchmark example provide an understanding of the performance of floating stone columns when loaded in a staged loading as compared to quick loading.
Stepped Loading of a Raft Foundation Supported on Deep Soft Clay Improved with Floating Stone Columns
Sustain. Civil Infrastruct.
Shehata, Hany (Herausgeber:in) / Badr, Mona (Herausgeber:in) / Elmeligi, Khaled Hussein (Autor:in) / Sabry, Mamdouh A. (Autor:in) / El-Sekelly, Waleed (Autor:in)
20.11.2020
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
3D Numerical Analysis of Piled Raft Foundation on Soft Soil Improved by Stone Columns
| Springer Verlag | 2025
3D Numerical Analysis of Piled Raft Foundation on Soft Soil Improved by Stone Columns
| Springer Verlag | 2025
| British Library Online Contents | 2011