A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stage Excavation Analyses of CA/T Slurry Walls
The JE/Sverdrup Boston office is the first Section Design Consultant of the Central Artery/Tunnel project for the Massachusetts Highway Department (MHD) to use FLAC analyses for the slurry walls of a Support of Excavation (SOE) system. During the construction phases of the CA/T contract D015A1 and D015A2 projects, the Contractors submitted Value Engineering Change Proposals for SOE designs with a two-dimensional (2-D) approach, using the ANSYS finite element code, in lieu of the project defined one-dimensional (1-D) approach. Since ANSYS is a general structural engineering program, MHD was concerned about its applications to geotechnical problems. JE/Sverdrup, therefore, recommended using FLAC, a 2-D finite difference code for geotechnical applications, as an independent check of the ANSYS analysis results. This paper outlines the FLAC methodology, discusses a simplified modeling concept, describes the numerical stage excavation procedures, and compares ANSYS, FLAC, and 1-D analysis results. In conclusion, a suitable 2-D analysis generally results in a more cost-effective design for vertical members of an SOE system than that of the conventional 1-D approach.
Stage Excavation Analyses of CA/T Slurry Walls
The JE/Sverdrup Boston office is the first Section Design Consultant of the Central Artery/Tunnel project for the Massachusetts Highway Department (MHD) to use FLAC analyses for the slurry walls of a Support of Excavation (SOE) system. During the construction phases of the CA/T contract D015A1 and D015A2 projects, the Contractors submitted Value Engineering Change Proposals for SOE designs with a two-dimensional (2-D) approach, using the ANSYS finite element code, in lieu of the project defined one-dimensional (1-D) approach. Since ANSYS is a general structural engineering program, MHD was concerned about its applications to geotechnical problems. JE/Sverdrup, therefore, recommended using FLAC, a 2-D finite difference code for geotechnical applications, as an independent check of the ANSYS analysis results. This paper outlines the FLAC methodology, discusses a simplified modeling concept, describes the numerical stage excavation procedures, and compares ANSYS, FLAC, and 1-D analysis results. In conclusion, a suitable 2-D analysis generally results in a more cost-effective design for vertical members of an SOE system than that of the conventional 1-D approach.
Stage Excavation Analyses of CA/T Slurry Walls
Chen, Wern-ping (author) / Reinfurt, John (author) / Vincent, Frederick O. (author)
Geo-Denver 2000 ; 2000 ; Denver, Colorado, United States
2000-07-24
Conference paper
Electronic Resource
English
Stage Excavation Analyses of CA/T Slurry Walls
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