On safety of slurry-wall trenches

• Autorzy: Brząkała W. , Górska K.
• Konferencja: Proceedings of the 14th French-Polish Colloguium "Soli and Rock Mechanics. soil Mechanics - Geomaterials" Grenoble, August 29-31, 2007
• Języki publikacji: EN

Abstrakty

EN

The paper focuses on a numerical simulation of ground movements and a stability evalua- tion during the trench excavation process (slurry-walls technology). A special attention is paid to the modelling of failure and to the defining of safety measures. Numerical calculations are based on the FLAC 3D code. It is found that the soil kinematics at failure coincides with the literature data. Three kinds of safety factor are investigated - all results converge if trench is deep enough. In addition, the applied probabilistic safety analysis takes into account the random level of the ground water, as a most important factor, and the soil strength. The acceptable level of safety is found.

Słowa kluczowe

EN

numerical simulation; ground movements; trench excavation process; slurry-walls technology

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2008
• Tom: Vol. 30, nr 1-2
• Strony: 198--206
• Opis fizyczny: bibliogr. 4 poz.,

Twórcy

autor

Brząkała W.

autor

Górska K.

• Institute of Geotechnics and Hydroengineering, Faculty of Civil Engineering, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

Bibliografia

• [1] PIASKOWSKI A., KOWALEWSKI Z., Application of tixotropic clay suspensions for stability of vertical sides of deep trenches without strutting, 6th Int. Conf. SMFE Montreal, 1965, Vol. III, 526–529.
• [2] THOFT-CHRISTENSEN P., BAKER M.J., Structural Reliability Theory and its Applications, Springer-Verlag, Berlin, 1982.
• [3] TSAI J.S., CHANG J.C., Three-dimensional stability analysis for slurry trench wall in cohesionless soil, Canadian Geotechnical Journal, 1996, 33, 798–808.
• [4] PN–EN 1538 2002 Execution of special geotechnical works – diaphragm walls.