과잉간극수압 발생을 고려한 중력식 안벽구조물의 동적해석
Dynamic Analysis of Gravity Quay Wall Considering Development of Excess Pore Pressure in Backfill Soil
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In this paper, a total stress analysis method for gravity quay walls is suggested. The method can evaluate the displacement of the quay walls considering the effect of excess pore pressure developed in backfill soils. This method changes the stiffness of backfill soils according to the expected magnitude of the excess pore pressure. For practical application, evaluation methods are suggested for determining the excess pore pressure ratio developed in the backfill soils and the backfill stiffness that corresponds to the excess pore pressure ratio. This method is important in practical applications because the displacement of the quay walls can be evaluated by using only the basic input properties in the total stress analysis. The applicability of the suggested method was verified by comparing the results of the analysis with the results of 1-g shaking table tests. From the comparison, it was found that the calculated displacements from the suggested method showed good agreement with the measured displacements of the quay walls. It was also found that the excess pore pressure in backfill soils is a governing influence on the dynamic behavior of quay walls.
Abstract
In this paper, a total stress analysis method for gravity quay walls is suggested. The method can evaluate the displacement of the quay walls considering the effect of excess pore pressure developed in backfill soils. This method changes the stiffness of backfill soils according to the expected magnitude of the excess pore pressure. For practical application, evaluation methods are suggested for determining the excess pore pressure ratio developed in the backfill soils and the backfill stiffness that corresponds to the excess pore pressure ratio. This method is important in practical applications because the displacement of the quay walls can be evaluated by using only the basic input properties in the total stress analysis. The applicability of the suggested method was verified by comparing the results of the analysis with the results of 1-g shaking table tests. From the comparison, it was found that the calculated displacements from the suggested method showed good agreement with the measured displacements of the quay walls. It was also found that the excess pore pressure in backfill soils is a governing influence on the dynamic behavior of quay walls.
참고문헌 (9)
- 강홍윤, "Liquefaction in Seabeds and Stability of Coastal Structure Foundations", 한국해양공학회지, 12(1), pp.143~152 (1998)
- Dissipation Pattern of Excess Pore Pressure After Liquefaction in Saturated Sand Deposits, "Ha, I.S", TRB, 59~67, pp.Transportation Research Record 1821 (2003)
- Florin, V.A, "Liquefaction of Saturated Sandy Soils", the 5th International conference on Soil Mechanics and Foundation Engineering, pp.107~111 (1961)
- Irisawa, T, "Residual Deformation of Caisson, Sheet Pile and Ground by Simplified Analysis", 12th World Conference on Earthquake Engineering, pp.2484~ (2000)
- Itasca, "FLAC 2D ver 3.3 User's Manual", ~ (1995)
- Martin, G.R, "Fundamentals of Liquefaction Under Cyclic Loading", Journal of the Geotechincal Engineering Division, 101(5), pp.423~438 (1975), ASCE
- Ohta, Y, "Estimation of S-wave Velocity in terms of Characteristic Indices of Soil", Butsuri-Tanko, 29(4), pp.34~41 (1976)
- Seed, H.B, "Pore-water Pressure Changes During Soil Liquefaction", Journal of the Geotechnical Engineering Division, 102(4), pp.323~346 (1976), ASCE
- Stark, T.D, "Undrained Shear Strength of Sands for Stability Analysis", Journal of Geotechnical Engineering, 118(11), pp.1727~1747 (1992), ASCE