Critical hydraulic head loss assessment for a circular sheet pile wall under axisymmetric seepage conditions

• Autorzy: Bouchelghoum F. , Benmebarek N.
• Języki publikacji: EN

Abstrakty

EN

On excavating soil in areas with a high groundwater level (cofferdam driven in permeable soils in river and maritime sites) seepage of water is a problem. In the design of the cofferdam, various flow conditions should be specified correctly, and the critical hydraulic head difference against seepage failure, Hc , must be estimated exactly. Although several methods have been proposed in the literature, they lead sometimes to great differences in the hydraulic head loss inducing failure. In this paper, the seepage failure problem of homogeneous (isotropic and anisotropic) and problem of multi-layered and isotropic sandy soil under axisymmetric flow conditions are mainly considered and analyzed using an explicit finite difference method implanted in the FLAC2D (Fast Lagrangian Analysis of Continua) Code. Various parameters affecting the stability of the cofferdam were examined. It was found that the effect of excavation shapes; soil anisotropy and nonhomogeneity is significant for the reduction of the critical hydraulic head loss H/f corresponding to the zero effective passive earth pressure.

Słowa kluczowe

PL

przesączanie wody; grodza

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2011
• Tom: Vol. 33, nr 4
• Strony: 3--23
• Opis fizyczny: Bibliogr. 38 poz., rys., tab.

Twórcy

autor

Bouchelghoum F.

autor

Benmebarek N.

• Department of Civil and Hydraulic Engineering, Civil Engineering Laboratory, Biskra University, BP 145 Biskra 07000, Algeria,

Bibliografia

• [1] TERZAGHI K., Theoretical soil mechanics, Wiley, New York 1943.
• [2] TERZAGHI K., PECK R.B., Soil mechanics in engineering practice, 2nd ed., John Wiley & Sons, New York 1948.
• [3] McNAMEE J., Seepage into a sheeted excavation, Géotechnique, The Institution of Civil Engineers, London, 1949, 4 (1), 229–241.
• [4] MARSLAND A., Model experiments to study the influence of seepage on the stability of a sheeted excavation in sand, Géotechnique, The Institution of Civil Engineers, London, 1953, 4 (7), 223–241.
• [5] DAVIDENKOFF R.N., Zur berechnung des hydraulischen grundbruches, Wasserwirtschaft, 1954, (46), 298–307.
• [6] BAZANT Z., Ergebnisse der Berechnung der Stabilitat gegen Hydraulischen Grundbruch mit Hilfe der Elektronen-Rechenan-lage, Proc. of the Int. Conf. on Soil. Mech. and Found, Eng., Budapest, 1963, 215–223.
• [7] DAVIDENKOFF R.N., FRANKE O.L., Untersuchung der raumlichen Sickerstromung in eine umspundete Baugrube in offenen Gewassern, Die Bautechnik, 1965, 9, 298–307.
• [8] KASTNER R., Excavations profondes en site urbain: Problèmes liés à la mise hors d’eau. Dimensionnement des soutènements butonnés, Thesis of Docteur e’s Sciences, INSA, France, 1982.
• [9] KHAN M.R.A., TAKEMURA J., FUKUSHIMA H., KUSAKABE O., Behaviour of double sheet pile wall cofferdam on sand observed in centrifuge tests, IJPMG – Int. J. of Physical Modelling in Geotechnics, 2001, 4, 01–16.
• [10] BENMEBAREK N., BENMEBAREK S., KASTNER R., Numerical studies of seepage failure of sand within a cofferdam, Elsevier, Computers & Geotechnics, 2005a, Vol. 32, No. 4, 264–273.
• [11] BENMEBAREK N., BENMEBAREK S., KASTNER R., A numerical analysis of seepage failure in stratified soils within a cofferdam, Proc. of the 10 th Int. Conf. on Civi., Struct. and Envir. Eng. Computing, Scotland, 2005b, Paper 258.
• [12] WUDTKE R.B., Failure Mechanisms of Hydraulic Heave at Excavations, 19 th Eurp. Young Geotech. Eng. Conf. 3–5 Sep, 2008, Győr, Hungary.
• [13] HOULSBY G.T., Forces on retaining walls by Sokolovskii’s method, including varying porewater pressures, undergraduate project report. Cambridge, Cambridge University Engineering Department, 1975.
• [14] SOUBRA A.H., KASTNER R., Influence of seepage flow on the passive earth pressures, Proc. of the Int. Conf. on retaining structures, 1992, 67–76.
• [15] SOUBRA A.H., KASTNER R., BENMANSOUR A., Passive earth pressures in the presence of hydraulic gradients, Géotechnique, ICE, 1999, 3(49), 319–330.
• [16] BENMEBAREK N., BENMEBAREK S., KASTNER R., SOUBRA A.H., Passive and active earth pressures in the presence of groundwater flow, Géotechnique, ICE, 2006, Vol. 56, No. 3, 149–158.
• [17] WANG J.J., LIU F.C., JI C.L., Influence of drainage conditions on coulomb-type active earth pressure, Soil Mech. & Found Eng., 2008, Vol. 45, No. 5.
• [18] BAUER G.E., Dewatering, hydraulic failure and subsequent analysis of a sheeted excavation, Proc. of Int. Conf. on Case Histories in Geotechnical Eng., 1984, 1415–1421.
• [19] TANAKA T., Boiling occurred within a braced cofferdam due to two dimensionally concentrated seepage flow, 3rd Int. Symp., geotech. aspects of underg const. in soft ground, 23–25 Oct. 2002, Toulouse, 33–38.
• [20] TANAKA T., YOKOYAMA T., Effects of jet grouting under sheet piles on seepage failure, Geotechnical aspects of Underground Construction in Soft Ground, Bakker et al. (eds.), Taylor & Francis Group, London 2006, 923–937.
• [21] TANAKA T., KUSAKA T., NAGAI S., HIROSE D., Characteristics of Seepage Failure of Soil under Various Flow Conditions, Proc. of the 19th Int. Offshore and Polar Eng. Conf., Osaka, Japan, June 21–26, 2009, 90–95.
• [22] MIURA K., SUPACHAWAROTE C., IKEDA K., Estimation of 3D seepage force inside cofferdam regarding boiling type of failure, Proc. of the Geoteh. – Year 2000. Developments in Geotechnical Engineering, 2000, 371–380.
• [23] BOUCHELGHOUM F., BENMEBAREK N., Numeric forecasting of the deep circular excavation out flow and foundation stability, Proc. AL-Azhar Eng. Ninth Int. Conf. (AEIC), Egypt, 2007.
• [24] BOUCHELGHOUM F., BENMEBAREK N., BENMEBAREK S., KASTNER R., A 3D numeric modelling of groundwater flow within circular cofferdams, Int. Algerian J. of Technology, AJOT, (2008a), Vol. 01, No. 01, 79–91.
• [25] LIU F.C., WANG J.H., ZHANG L.L., Axi-symmetric active earth pressure for layered backfills obtained by the slip line method, J. of Shanghai Jiaotong University (Science), 2008, Vol. 13, No. 5, 579–584.
• [26] BOUCHELGHOUM F., BENMEBAREK N., BENMEBAREK S., A three-dimensional numeric investigation of piping phenomenon and out flow within square cofferdams, Proc. First Int. Conf. on Geosciences to the service of lasting development, 26–28 Nov. 2006, Tebessa, Algeria, 29–33.
• [27] BOUCHELGHOUM F., BENMEBAREK N., A 3D numeric forecasting of piping phenomenon and flow within rectangular cofferdams, Proc 4th Int. Conf. on Water Resources in the Mediterranean Basin, Algeria, 2008b.
• [28] SOUBRA A.H., REGENASS P., Three-dimensional passive earth pressures by kinematical approach, ASCE J. Geot. Geoenv. Eng., 2000, 969–978.
• [29] BENMEBAREK S., KHELIFA T., BENMEBAREK N., KASTNER R., Numerical evaluation of 3D passive earth pressure coefficients for retaining wall subjected to translation, Elsevier, Computers & Geotechnics, 2008, Vol. 35, 47–60.
• [30] CAI F., UGAI K., Three-dimensional numerical investigation of piping for excavations in cohesionless soils, Groundwater Eng. – Recent advances, Kono, Nishigaki & Komatsu (eds.), Swerts & Zeithlinger, 2003.
• [31] CAI F., UGAI K., Seepage analysis of two case histories of piping induced by excavations in cohesionless soils, The First Inter. Conf. on Construction IT, Beijing, China, 2004, August 12th–14th.
• [32] KIM D.S., LEE B.C., Instrumentation and numerical analysis of cylindrical diaphragm wall movement during deep excavation at coastal area, Marine Geores and Geotech., 2005, No. 23, 117–136.
• [33] TANAKA T., MATSUURA R., Blow-out soil particles during construction of a caisson type pile, Groundwater Eng., Kono Nishigaki & Kamatsu (eds.), 2003, 139–145.
• [34] FLAC2D. Fast Lagrangian Analysis of Continua, ITASCA Consulting Group, Inc, Minneapolis, 2005.
• [35] CUNDALL P.A., HART R.D., Numerical modeling of discontinua, Eng. Comp., 1992, 9, 101–113.
• [36] SLOAN S.W., RANDOLPH M.F., Numerical prediction of collapse loads using finite element methods, Int. J. Num. Anal. Methods Geomech., 1982, 6, 47–76.
• [37] FRYDMAN S., BURD H.J., Numerical studies of the bearing capacity factor Nc , J. Geot. Geoenv. Eng., 1997, 123, 20–29.
• [38] ERICKSON H.L., DRESHER A., Bearing capacity of circular footings, J. Geotech. Geoenviron. Eng., 2002, 128, 38–43