Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance Monitoring of Deep Excavation at Changi WRP Project, Singapore
This paper describes the monitoring of cut-slopes and the retaining wall that was adopted at CWRP site. During construction, thick deposits of soft marine clay, not discovered during previous site investigations, were encountered at the northern and eastern project boundaries. A high quality supplementary site investigation combined with the performance monitoring of slopes allowed the risk of instability in these areas to be effectively managed with the result that the use of relatively lower safety factors than traditionally adopted could be accepted. In addition, a detailed re-evaluation of the anticipated behavior of the CBP retaining wall combined with performance monitoring of the retaining wall and cut slopes allowed the originally planned jet grout ground improvement works at the location of EJC to be omitted. The use of pro-active construction management and resident engineering during construction, together with comprehensive instrumentation, robust data acquisition and continuous data review ensured that the risk of slope and retaining wall instability was well managed. This approach resulted in significant direct and indirect cost and time savings to the project and all project stakeholders were satisfied. The slopes and retaining wall at CWRP performed satisfactorily without failure and the excavation has since been backfilled.
Performance Monitoring of Deep Excavation at Changi WRP Project, Singapore
This paper describes the monitoring of cut-slopes and the retaining wall that was adopted at CWRP site. During construction, thick deposits of soft marine clay, not discovered during previous site investigations, were encountered at the northern and eastern project boundaries. A high quality supplementary site investigation combined with the performance monitoring of slopes allowed the risk of instability in these areas to be effectively managed with the result that the use of relatively lower safety factors than traditionally adopted could be accepted. In addition, a detailed re-evaluation of the anticipated behavior of the CBP retaining wall combined with performance monitoring of the retaining wall and cut slopes allowed the originally planned jet grout ground improvement works at the location of EJC to be omitted. The use of pro-active construction management and resident engineering during construction, together with comprehensive instrumentation, robust data acquisition and continuous data review ensured that the risk of slope and retaining wall instability was well managed. This approach resulted in significant direct and indirect cost and time savings to the project and all project stakeholders were satisfied. The slopes and retaining wall at CWRP performed satisfactorily without failure and the excavation has since been backfilled.
Performance Monitoring of Deep Excavation at Changi WRP Project, Singapore
Parashar, Suresh (Autor:in) / Mitchell, Roger (Autor:in) / Hee, Moh Wung (Autor:in) / Sanmugnathan, Devaraj (Autor:in) / Sloan, Ed (Autor:in) / Nicholson, Gordon (Autor:in)
Seventh International Symposium on Field Measurements in Geomechanics ; 2007 ; Boston, Massachusetts, United States
FMGM 2007 ; 1-12
21.09.2007
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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