A pseudo-two-dimensional seismic analysis of earth dams

1991 ◽  
Vol 28 (5) ◽  
pp. 660-667
Author(s):  
M. Soulié ◽  
B. N. Touileb ◽  
V. Silvestri
Keyword(s):  
Stress Analysis ◽  
Effective Stress ◽  
Cross Sections ◽  
Stress Responses ◽  
Seismic Analysis ◽  
Upstream Region ◽  
Two Dimensional ◽  
Earth Dams ◽  
Dimensional Model ◽  
Total Stress

This paper describes the development of a pseudo-two-dimensional model for the prediction of the seismic responses of earth dams of heterogeneous cross sections. The model, called DESRA-2.MOD, has been applied to both the total stress and the effective stress responses of a dam subjected to earthquake loading. In the case of the total stress analysis, the DESRA-2.MOD model provides results that approximate reasonably well those obtained by means of the more precise two-dimensional QUAD-4 model. As for the effective stress analysis, it is shown that zones of liquefaction develop during the earthquake and propagate through the dam, especially in the upstream region. Key words: one-dimensional model, seismic analysis, earth dams, heterogeneous cross sections, total stress, effective stress, liquefaction.

A Study of a Large Compacted Clay Embankment-Fill Failure

1965 ◽  
Vol 2 (3) ◽  
pp. 274-286
Author(s):  
Alan E Insley
Keyword(s):  
Shear Strength ◽  
Stress Analysis ◽  
Safety Factor ◽  
Effective Stress ◽  
Soil Samples ◽  
Average Moisture Content ◽  
Compacted Clay ◽  
Total Stress ◽  
Compacted Soil ◽  
Effective Stress Analysis

The paper describes the failure during construction of a proposed 70 ft. high railway embankment fill. The fill was built of a uniform clay of medium plasticity which was used at an average moisture content of 3 per cent greater than had been provided for in the design. The fill failed under its own weight when it reached a height of 55 feet.In order to assist in the design of stabilizing works three test holes were drilled in the fill and soil samples recovered. Properties of field compacted and laboratory compacted soil samples are compared. The age of both types of samples is shown to have a significant effect on the test results.Both total and effective stress analyses of the embankment at failure have been performed using the laboratory values of soil strength. The total stress analysis gives a safety factor of 1.0 at failure whereas the effective stress analysis gives a safety factor of 1.2. The hazards of choosing the correct value of laboratory shear strength for the total stress analysis are discussed.

scholarly journals Large deformation finite element analysis of undrained pile installation

2016 ◽  
Vol 38 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Jakub Konkol ◽  
Lech Bałachowski
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Large Deformation ◽  
Effective Stress ◽  
Arbitrary Lagrangian Eulerian ◽  
Total Stress ◽  
Element Analysis ◽  
Ale Formulation ◽  
Phase Medium ◽  
Stress Parameters

Abstract In this paper, a numerical undrained analysis of pile jacking into the subsoil using Abaqus software suit has been presented. Two different approaches, including traditional Finite Element Method (FEM) and Arbitrary Lagrangian–Eulerian (ALE) formulation, were tested. In the first method, the soil was modelled as a two-phase medium and effective stress analysis was performed. In the second one (ALE), a single-phase medium was assumed and total stress analysis was carried out. The fitting between effective stress parameters and total stress parameters has been presented and both solutions have been compared. The results, discussion and verification of numerical analyzes have been introduced. Possible applications and limitations of large deformation modelling techniques have been explained.

Effective stress analysis of the stability of embankments on soft soils

1982 ◽  
Vol 19 (4) ◽  
pp. 433-450 ◽  
Author(s):  
G. Pilot ◽  
B. Trak ◽  
P. La Rochelle
Keyword(s):  
Stress Analysis ◽  
Effective Stress ◽  
Total Stress ◽  
Soft Soils ◽  
Effective Stresses ◽  
Methods Of Analysis ◽  
Effective Stress Analysis ◽  
The Stability ◽  
Stress Analyses

This paper presents the results of a study of stability by effective stress analysis of four embankments that were built to failure; three of these embankments are located in Narbonne, Lanester, and Cubzac in France, and the fourth one in Saint-Alban, Québec. After an outline of the procedures followed to obtain the required data and parameters, a brief discussion is presented on the defects inherent in the methods of analysis in terms of effective stresses. The factors of safety obtained by the effective stress analyses are compared with the results of total stress analyses. It is concluded that, in spite of the limitations of the method of effective stress analysis, this approach, as used in the present paper, remains a useful tool for the engineer.

2-dimensional effective stress analysis for a damaged bridge located in the caldera of Mount Aso in 2016 Kumamoto earthquake

2021 ◽  
Author(s):  
Yukihide Kajita ◽  
Taiji Mazda ◽  
Kunihiko Uno ◽  
Takeshi Kitahara
Keyword(s):  
Stress Analysis ◽  
Effective Stress ◽  
Volcanic Ash ◽  
Two Dimensional ◽  
Front Side ◽  
2016 Kumamoto Earthquake ◽  
Kumamoto Earthquake ◽  
Rubber Bearing ◽  
Volcanic Ash Soil ◽  
Effective Stress Analysis

<p>In this paper, we conducted a two-dimensional effective stress analysis in consideration of the interaction between the ground and the structure for the Kurumakaeri Bridge which is located in the caldera of Mount Aso. From the results of the analyses, it is confirmed that the ground around the abutment subsided by about 26 cm due to the deformation of the soft volcanic ash soil. Furthermore, it is confirmed that the collision between the superstructure and the abutment happened because the abutment moved to the front side. Due to this movement, the deformation of about 34 cm occurred at the rubber bearing after the earthquake ended.</p>

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