Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prediction and Validation of Compaction Grout Effectiveness
The repair of sinkholes in the core of WAC Bennett Dam required an unusually controlled implementation of compaction grouting. Control was obtained by developing a detailed prognosis of what could be achieved under what circumstances, and then using this prognosis to understand the measured grouting response. Ongoing detailed analysis of grout pressure-take relationships allowed the improvement in this soil density to be monitored. The prognosis and analysis were based on a large strain critical state elastic-plastic finite element program developed for compaction grouting. Procedures to predict and analyze the effect of compaction grouting are presented, and their use shown for controlled grouting. The numerical procedures developed and validated show that compaction grouting can substantially densify soils, in contrast to the more widely held perception that the primary effect of compaction grouting is to increase horizontal stress. In the case of WAC Bennett Dam, compaction grouting substantially densified the loose soils beneath the two sinkholes, reinstating the core to a density approaching the pre-sinkhole condition. The dam is now back in service.
Prediction and Validation of Compaction Grout Effectiveness
The repair of sinkholes in the core of WAC Bennett Dam required an unusually controlled implementation of compaction grouting. Control was obtained by developing a detailed prognosis of what could be achieved under what circumstances, and then using this prognosis to understand the measured grouting response. Ongoing detailed analysis of grout pressure-take relationships allowed the improvement in this soil density to be monitored. The prognosis and analysis were based on a large strain critical state elastic-plastic finite element program developed for compaction grouting. Procedures to predict and analyze the effect of compaction grouting are presented, and their use shown for controlled grouting. The numerical procedures developed and validated show that compaction grouting can substantially densify soils, in contrast to the more widely held perception that the primary effect of compaction grouting is to increase horizontal stress. In the case of WAC Bennett Dam, compaction grouting substantially densified the loose soils beneath the two sinkholes, reinstating the core to a density approaching the pre-sinkhole condition. The dam is now back in service.
Prediction and Validation of Compaction Grout Effectiveness
Shuttle, Dawn (Autor:in) / Jefferies, Michael (Autor:in)
Geo-Denver 2000 ; 2000 ; Denver, Colorado, United States
24.07.2000
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Prediction and Validation of Compaction Grout Effectiveness
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