A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
This paper describes the innovative application of jet grouting to enable fast track delivery of a large-scale basement project in soft marine clay. A self-stabilized jet grout dike was formed across the width of a basement to retain a temporary excavation 12m to 17m deep. The jet grout dike was designed to act as a rigid gravity retaining structure. Lateral stability was maintained by a horizontal jet grout slab confined within the surrounding diaphragm walls. Overturning stability was provided by the foundation piles integrated within the jet grout slab, which acted like a piled raft beneath the jet grout dike. The jet grout dike was trimmed in stages as the excavation progressed. This approach allowed simultaneous excavation for the basement to proceed, while foundation works were still in progress at the ground surface on the retained side of the jet grout dike. The main advantage for adopting a jet grout dike was the elimination of the activities involving installation and removal of temporary sheet pile walls and associated diagonal struts from the construction schedule.
This paper describes the innovative application of jet grouting to enable fast track delivery of a large-scale basement project in soft marine clay. A self-stabilized jet grout dike was formed across the width of a basement to retain a temporary excavation 12m to 17m deep. The jet grout dike was designed to act as a rigid gravity retaining structure. Lateral stability was maintained by a horizontal jet grout slab confined within the surrounding diaphragm walls. Overturning stability was provided by the foundation piles integrated within the jet grout slab, which acted like a piled raft beneath the jet grout dike. The jet grout dike was trimmed in stages as the excavation progressed. This approach allowed simultaneous excavation for the basement to proceed, while foundation works were still in progress at the ground surface on the retained side of the jet grout dike. The main advantage for adopting a jet grout dike was the elimination of the activities involving installation and removal of temporary sheet pile walls and associated diagonal struts from the construction schedule.
Jet Grout Dike for Temporary Excavation Support in Soft Clay
Ho, C. E. (author)
Earth Retention Conference (ER) 2010 ; 2010 ; Bellevue, Washington, United States
Earth Retention Conference 3 ; 400-407
2010-07-26
Conference paper
Electronic Resource
English
Jet Grout Dike for Temporary Excavation Support in Soft Clay
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