Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Jet Grouting for Excavation Support, Underpinning, and Groundwater Control for the Construction of Sewage Treatment Plant Tanks
The Bay Park Sewage Treatment Plant improvement project involved the replacement of three detritus-type grit tanks with three vortex grit tanks within an existing treatment building. The proposed tanks extend 20 ft below grade, 12 ft below existing foundations, and 6 ft below groundwater. Complex site issues included: high groundwater table, pervious soils, space constraints, utility constraints, existing foundation concerns, and a construction staging plan which required one tank remain operational during construction. Traditional underpinning was not possible since dewatering would cause excessive foundation settlements. An innovative solution utilizing jet grouting was implemented to provide support of excavation, underpinning, and control groundwater infiltration during construction. The installation and performance of jet grouting operations was verified and monitored by rig instrumentation and column coring. Near real-time displacement monitoring was utilized to monitor the structure. This paper presents details of the jet grouting design, construction, monitoring and verification results, and lessons learned.
Jet Grouting for Excavation Support, Underpinning, and Groundwater Control for the Construction of Sewage Treatment Plant Tanks
The Bay Park Sewage Treatment Plant improvement project involved the replacement of three detritus-type grit tanks with three vortex grit tanks within an existing treatment building. The proposed tanks extend 20 ft below grade, 12 ft below existing foundations, and 6 ft below groundwater. Complex site issues included: high groundwater table, pervious soils, space constraints, utility constraints, existing foundation concerns, and a construction staging plan which required one tank remain operational during construction. Traditional underpinning was not possible since dewatering would cause excessive foundation settlements. An innovative solution utilizing jet grouting was implemented to provide support of excavation, underpinning, and control groundwater infiltration during construction. The installation and performance of jet grouting operations was verified and monitored by rig instrumentation and column coring. Near real-time displacement monitoring was utilized to monitor the structure. This paper presents details of the jet grouting design, construction, monitoring and verification results, and lessons learned.
Jet Grouting for Excavation Support, Underpinning, and Groundwater Control for the Construction of Sewage Treatment Plant Tanks
Preuss, Russell W. (Autor:in) / Cacciola, Daniel V. (Autor:in) / Medina, Carlos (Autor:in)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 230-240
21.03.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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