Quasi-static and dynamic analysis of pore water pressure in Azadi earth dams using Abaqus software

2021 ◽  
Vol 14 (13) ◽  
Author(s):  
Behrang Beiranvand ◽  
Mostafa zeinolebadi rozbahani ◽  
Ahmad Reza Mazaheri ◽  
Mehdi Komasi
Keyword(s):  
Dynamic Analysis ◽  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Earth Dams ◽  
Static And Dynamic Analysis ◽  
Abaqus Software

Representativeness of measurements in the interpretation of earth dam behaviour

2006 ◽  
Vol 43 (1) ◽  
pp. 87-99 ◽  
Author(s):  
Luca Pagano ◽  
Stefania Sica ◽  
Augusto Desideri
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Earth Dam ◽  
Measured Quantity ◽  
Pressure Measurements ◽  
Earth Dams ◽  
Pressure Monitoring ◽  
Spatial Continuity ◽  
Numerical Examples

The representativeness of measurements monitored in earth dams is analysed to investigate how a given measured quantity can be used to interpret the dam's mechanical behaviour. Representativeness is evaluated on the basis of spatial continuity of the measured quantity and the sensitivity of that quantity to natural mechanical nonhomogeneity. The discussion is supported by results from case studies and numerical examples. The study is mainly focused on pore-water pressure measurements. Spatial continuity of pore-water pressure is analysed with consideration of both saturation and drainage conditions. The paper discusses how pore-water pressure representativeness can vary over the lifetime of the dam.Key words: earth dam, pore-water pressure, monitoring.

Analysis of Pore Water Pressure in Specimen under 3D Uniform Deformation Field Considering Inertia Effect

2014 ◽  
Vol 1030-1032 ◽  
pp. 1056-1059
Author(s):  
Bin Bin Xu ◽  
Toshihiro Noda
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Deformation Field ◽  
Inertia Effect ◽  
Uniform Deformation ◽  
Inertia Term ◽  
Very High

A dynamic analysis code has been expanded from the previous quasi-static code and the effect of inertia term is added. In this paper, the influence of inertia term on the pore water pressure is investigated in detail under a uniform deformation field theoretically and it is found that the distribution of pore water pressure is parabolic if there is inertia term. Then in order to verify the calculation precision of this code, the soil-water coupled numerical calculation is carried out based on the assumption of uniform deformation. Special distributively pore water pressure is applied to each finite element according to its radius to keep the uniformity of deformation. The results show that the maximum of pore water pressure appears at the center of circle and it gradually decreases along the radius, which proves the precision of the dynamic analysis code is very high.

Offshore Sea Airport Revetment Structure Foundation Liquefaction Analysis

2013 ◽  
Vol 353-356 ◽  
pp. 2171-2176
Author(s):  
Jie Zhao ◽  
Gao Jie Yun ◽  
Gui Xuan Wang
Keyword(s):  
Dynamic Analysis ◽  
Pore Water ◽  
Effective Stress ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Total Stress ◽  
Treatment Methods ◽  
Ground Treatment ◽  
Over Time ◽  
Liquefaction Analysis

This Earthquake liquefaction analysis of total stress method is often used, but the total stress method does not consider the variation of pore water pressure and the process of development of the liquefaction over time. Using two perspectives which the total stress method and effective stress dynamic analysis given liquefied range of offshore airport foundation under the earthquake , and giving recommendations for ground treatment methods.

A model for gas and water flow through the core of earth dams

2002 ◽  
Vol 39 (1) ◽  
pp. 90-102 ◽  
Author(s):  
Jean-Pierre LeBihan ◽  
Serge Leroueil
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Gas Diffusion ◽  
Earth Dams ◽  
The Core ◽  
Pressure Distributions ◽  
Flow Through ◽  
Pressure Dissolution ◽  
And Diffusion

The paper proposes equations describing the transport of gases through the initially unsaturated core of a dam by dissolution and diffusion in water and examines different numerical simulations based on these equations. The simulation results provide pore-water pressure distributions similar to those observed in several earth dams, with higher pore-water pressures than expected in the downstream part of the core. Practical considerations to estimate the implications of the phenomenon are then discussed.Key words: dam, unsaturated soil, pore pressure, dissolution of gas, diffusion of gas, hydraulic conductivity.

scholarly journals Pore Water Pressure Measurements in the Interpretation of the Hydraulic Behaviour of Two Earth Dams

2010 ◽  
Vol 50 (2) ◽  
pp. 295-307 ◽  
Author(s):  
Luca Pagano ◽  
Enzo Fontanella ◽  
Stefania Sica ◽  
Augusto Desideri
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Pressure Measurements ◽  
Earth Dams ◽  
Hydraulic Behaviour

TIME TO THE END OF PRIMARY CONSOLIDATION (EOP) OF SOFT CLAYEY SOILS: CONCERNING THE EFFECT OF ATTERBERG’S LIMIT AND CYCLIC LOADING HISTORY

2019 ◽  
Vol 128 (2B) ◽  
pp. 29-41
Author(s):  
Trần Thanh Nhàn
Keyword(s):  
Cyclic Loading ◽  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Clayey Soils ◽  
Loading History ◽  
Cyclic Shear ◽  
Wide Range ◽  
Primary Consolidation ◽  
Time Required

In order to observe the end of primary consolidation (EOP) of cohesive soils with and without subjecting to cyclic loading, reconstituted specimens of clayey soils at various Atterberg’s limits were used for oedometer test at different loading increments and undrained cyclic shear test followed by drainage with various cyclic shear directions and a wide range of shear strain amplitudes. The pore water pressure and settlement of the soils were measured with time and the time to EOP was then determined by different methods. It is shown from observed results that the time to EOP determined by 3-t method agrees well with the time required for full dissipation of the pore water pressure and being considerably larger than those determined by Log Time method. These observations were then further evaluated in connection with effects of the Atterberg’s limit and the cyclic loading history.

Conjectures, Hypotheses, and Theories of Drumlin Formation (In memory of Stanislaw Baranowski)

1981 ◽  
Vol 27 (97) ◽  
pp. 503-505 ◽  
Author(s):  
Ian J. Smalley
Keyword(s):  
Shear Strength ◽  
Pore Water ◽  
Stress Level ◽  
Critical Stress ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Glacial Till ◽  
Forming Process ◽  
Stress Levels

AbstractRecent investigations have shown that various factors may affect the shear strength of glacial till and that these factors may be involved in the drumlin-forming process. The presence of frozen till in the deforming zone, variation in pore-water pressure in the till, and the occurrence of random patches of dense stony-till texture have been considered. The occurrence of dense stony till may relate to the dilatancy hypothesis and can be considered a likely drumlin-forming factor within the region of critical stress levels. The up-glacier stress level now appears to be the more important, and to provide a sharper division between drumlin-forming and non-drumlin-forming conditions.

The temperature and pore water pressure in soil subjected to dynamic load

2018 ◽  
Vol 35 (2) ◽  
pp. 111
Author(s):  
Kun ZHANG ◽  
Ze ZHANG ◽  
Xiangyang SHI ◽  
Sihai LI ◽  
Donghui XIAO
Keyword(s):  
Pore Water ◽  
Dynamic Load ◽  
Pore Water Pressure ◽  
Water Pressure
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