Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Enhancing Base Stability of Deep Excavation in Soft Clay with Grout Piles
Excavation in soft clay layer often causes large ground movement around. Without proper control, a base heave failure may also occur when the strength of in-situ clay is low and the excavation goes too deep. To reduce the potential of such adverse consequence, grout piles installed by hydraulic or mechanical method are often used to increase the strength of in-situ clay. But the effect of grout piles reinforced soft clay is not easy to be properly quantified. This study adopted a laboratory model test which used very soft clay as the testing soil to generate large ground movement under 1-g condition. The test results indicate that not only the amount of ground movement and soil strains but also the extents of soil movement can be reduced by reinforcing the base of excavation with grout pile in soft clay. By adjusting the excavation induced ground movement with various grout pile spacing, the effectiveness of ground improvement and the amount of base heave can be evaluated. In general, the amount of base heaving decreases with the improvement ratio (Ir), but increases with the excavation width (B) for braced excavation.
Enhancing Base Stability of Deep Excavation in Soft Clay with Grout Piles
Excavation in soft clay layer often causes large ground movement around. Without proper control, a base heave failure may also occur when the strength of in-situ clay is low and the excavation goes too deep. To reduce the potential of such adverse consequence, grout piles installed by hydraulic or mechanical method are often used to increase the strength of in-situ clay. But the effect of grout piles reinforced soft clay is not easy to be properly quantified. This study adopted a laboratory model test which used very soft clay as the testing soil to generate large ground movement under 1-g condition. The test results indicate that not only the amount of ground movement and soil strains but also the extents of soil movement can be reduced by reinforcing the base of excavation with grout pile in soft clay. By adjusting the excavation induced ground movement with various grout pile spacing, the effectiveness of ground improvement and the amount of base heave can be evaluated. In general, the amount of base heaving decreases with the improvement ratio (Ir), but increases with the excavation width (B) for braced excavation.
Enhancing Base Stability of Deep Excavation in Soft Clay with Grout Piles
Liao, Hung-Jiun (Autor:in) / Lin, Chih-Chen (Autor:in) / Jeng, Chao-Jie (Autor:in)
Proceedings of the Fourth International Conference on Grouting and Deep Mixing ; 2012 ; New Orleans, Louisiana, United States
Grouting and Deep Mixing 2012 ; 1653-1663
17.08.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Grouting , Highways and roads , Chemical grouting , Anchors , Cement , Excavation , Soft soils , Cutoffs , Clays , Piles , Mixing , Soil stabilization , Foundations , Hydraulic structures
Enhancing Base Stability of Deep Excavation in Soft Clay with Grout Piles
| British Library Conference Proceedings | 2012
Jet grout application for excavation in soft marine clay
| British Library Conference Proceedings | 2005
Base Stability of Deep Excavation in Anisotropic Soft Clay
| British Library Online Contents | 1998
Base Stability of Deep Excavation in Anisotropic Soft Clay
| Online Contents | 1998
Jet Grout Dike for Temporary Excavation Support in Soft Clay
| British Library Conference Proceedings | 2010