Temporary protection of construction pit for pump station and service shaft

摘要

The thesis deals with geostatic analysis of temporary excavation pit for installation of pump station and service shaft. They are part of the project named Renewal of public sewerage, waterwork and road reconstruction in Savska cesta in Kranj. Nearby buildings, local road, Kokra river and design depth of pump station dictate realization of temporary protection of construction pit under phreatic level. Analysis are executed analytically and numericaly using computer program Plaxis. Analytically soil stresses are calculated by Rankine earth pressure theory, otherwise the computer program Plaxis is based on finite element method (FEM). We checked folowing examples of protection of construction pit: cantilever pile wall, anchored pile wall, struted pile wall, well and sheet piling frame. Eurocode standard EC7 is considered in calculations. Various examples are also analysed and compared by economical and technological criterion.