scholarly journals THE USE OF MOHRS THEORY OF LIMIT STRESS STATE FOR EVALUATION OF SEISMIC SOIL PRESSURE ON RETAINING WALLS

2014 ◽  
Author(s):  
Mihai Vrabie
Keyword(s):  
Stress State ◽  
Retaining Walls ◽  
Soil Pressure ◽  
Limit Stress

Soil Pressure on Retaining Walls

1998 ◽  
pp. 184-203
Author(s):  
George E. Lazebnik ◽  
Gregory P. Tsinker
Keyword(s):  
Retaining Walls ◽  
Soil Pressure

Theory of limit stress state of soil and its applications

2020 ◽  
pp. 150-175
Author(s):  
B.I. Dalmatov ◽  
R.B. Zeidler
Keyword(s):  
Stress State ◽  
Limit Stress

Study of a Specimen with Stress Concentrators in Multiaxial Tests

2015 ◽  
Vol 809-810 ◽  
pp. 974-979 ◽  
Author(s):  
Ana Maria Comanici ◽  
Viorel Goanta ◽  
Paul Doru Barsanescu ◽  
Liviu Andrusca
Keyword(s):  
Experimental Investigation ◽  
Stress State ◽  
Accurate Information ◽  
Stress Concentrations ◽  
State Distribution ◽  
Element Analysis ◽  
Investigation Methods ◽  
Methods And Techniques ◽  
Limit Stress ◽  
Distribution Of Stresses

Experimental investigation methods and techniques are used to obtain accurate information on the tension and deformation of materials. Results underlying the limit stress state that aply to materials at this moment come from experiments on plain specimens and specimens showing stress concentrations. The study of stress concentrations is necessary to determine how it influences the limit stress state, distribution of stresses and yielding section. The article presents a series of specimens with stress concentrations and finite element analysis for thorough research.

scholarly journals Non-limit passive soil pressure on rigid retaining walls

2017 ◽  
Vol 27 (3) ◽  
pp. 581-587
Author(s):  
Guotao Dou ◽  
Junwu Xia ◽  
Wenjie Yu ◽  
Fang Yuan ◽  
Weigang Bai
Keyword(s):  
Retaining Walls ◽  
Soil Pressure

scholarly journals Experimental Assessments of Treating Effect on Retaining Walls for Loess Slopes under Long-Term Rainfall

2021 ◽  
Vol 2021 ◽  
pp. 1-23
Author(s):  
Guodong Liu ◽  
Zhijun Zhou ◽  
Shiqiang Xu ◽  
Wenjing Mi
Keyword(s):  
Retaining Wall ◽  
Retaining Walls ◽  
Shaanxi Province ◽  
Test Results ◽  
Soil Pressure ◽  
Huge Number ◽  
Infiltration Process ◽  
Rainwater Infiltration ◽  
Large Soil

Failures of treated slope occurring in China are at a continually increasing rate, and the huge number of treated loess slopes is calling for a postevaluation; however, no mature technique is in place. Based on an actual loess slope in Shaanxi Province treated by retaining wall, indoor geotechnical and model tests were conducted, revealing the rainwater infiltration process and pressure variations behind the wall, and the processes were then adopted to perform the postevaluation of the treated slope. The results proposed that effectual measures hence needed to be taken so as to avert rainwater infiltrating along the wall face and back or flowing through the wall body, which can soften the soil of the slope bottom. Although the wet front was developed by the rainfall process, it cannot be used as the boundary between saturated and unsaturated areas. Despite the peculiarly large soil pressure upon the wall back at the top layer, the soil pressure increases to a large value and then decreases with the depth. The model test results and investigation results were used to conduct the postevaluation of the prototype slope, which formed a postevaluation frame relevant to other slope postevaluations.

scholarly journals THE REACTIVE CAPACITY OF THE SOIL BASES OF GRAVITY-TYPE QUAY WALL

World Science ◽  
2019 ◽  
Vol 1 (9(49)) ◽  
pp. 16-19
Author(s):  
Natela Khoneliia ◽  
Svetlana Bugaeva
Keyword(s):  
Stress State ◽  
Earth Pressure ◽  
Base System ◽  
Soil Base ◽  
Lateral Earth Pressure ◽  
Quay Wall ◽  
Wide Range ◽  
Reactive Capacity ◽  
Limit Stress ◽  
Foundation Structure

The results of studies of the reactive capacity of the soil base of a gravity- type quay-wall on the basis of the method developed for calculating the “structure - soil base” system are considered. The method proposed allows determining the reactive capacity of the soil base in conditions of mixed stress state model (limit and sublimit stress state of the soil base) under and around of the base of the foundation structure in a wide range of loads of lateral earth pressure. The transformation of limit and sublimit stress state zones of the soil base on the basis of numerical modeling is presented which shows an increase of the sizes of limit stress state and a decrease of the sizes of sublimit stress state.

Numerical modelling of the asymmetric behaviour of concrete

2020 ◽  
Vol 234 (7) ◽  
pp. 988-1000
Author(s):  
Carla V Lopes ◽  
Rui P Cardoso ◽  
Francisco Q Melo
Keyword(s):  
Stress State ◽  
Yield Stress ◽  
Structural Integrity ◽  
Limit State ◽  
Realistic Model ◽  
Biaxial Stress ◽  
Compression Tests ◽  
Finite Element Program ◽  
Limit Stress ◽  
State Criterion

This article analyses the conditions for the yield stress state of concrete subjected to generalised loads. For this purpose, a limit stress state criterion, initially developed for the assessment of magnesium and respective alloys, is here adapted and implemented as a simulation model to assess the structural integrity of concrete components. In fact, materials as magnesium and concrete exhibit a similar mechanical behaviour, presenting a non-symmetric limit state domain for biaxial stress combinations, where it is observed a considerably larger strength to yield or rupture in a compression stress state than in a tensile one. The Cazacu yield stress state criterion has shown to be an accurate and realistic model to define the ultimate strength, either of concrete and magnesium alloys, as mentioned. The Cazacu criterion was implemented in a finite element program as a ‘user-defined’ subroutine. The numerical validation of that criterion was carried out on adjusting its limit stress state points to corresponding ones obtained by experiments of standard tensile or compression tests of concrete test specimens.

Problems in Earthquake Resistance Evaluation of Gabion Retaining Wall Based on Shake Table Test with Full-Scale Model

2019 ◽  
Vol 14 (9) ◽  
pp. 1154-1169
Author(s):  
Hiroshi Nakazawa ◽  
Kazuya Usukura ◽  
Tadashi Hara ◽  
Daisuke Suetsugu ◽  
Kentaro Kuribayashi ◽  
...  
Keyword(s):  
Retaining Wall ◽  
Retaining Walls ◽  
Full Scale ◽  
Shake Table Test ◽  
Earthquake Resistance ◽  
Seismic Stability ◽  
Scale Model ◽  
Shake Table ◽  
Soil Pressure ◽  
Mountainous Regions

The earthquake (Mw 7.3) that struck Nepal on April 25, 2015 caused damage to many civil engineering and architectural structures. While several road gabion retaining walls in mountainous regions incurred damage, there was very little information that could be used to draw up earthquake countermeasures in Nepal, because there have been few construction cases or case studies of gabion structures, nor have there been experimental or analytical studies on their earthquake resistance. Therefore, we conducted a shake table test using a full-scale gabion retaining wall to evaluate earthquake resistance. From the experiments, it was found that although gabion retaining walls display a flexible structure and deform easily due to the soil pressure of the backfill, they are resilient structures that tend to resist collapse. Yet, because retaining walls are assumed to be rigid bodies in the conventional stability computations used to design them, the characteristics of gabions as flexible structures are not taken advantage of. In this study, we propose an approach to designing gabion retaining walls by comparing the active collapse surface estimated by the trial wedge method, and the experiment results obtained from a full-scale model of a vertically-stacked wall, which is a structure employed in Nepal that is vulnerable to earthquake damage. When the base of the estimated slip line was raised for the trial wedge method, its height was found to be in rough agreement with the depth at which the gabion retaining wall deformed drastically in the experiment. Thus, we were able to demonstrate the development of a method for evaluating the seismic stability of gabion retaining walls that takes into consideration their flexibility by adjusting the base of the trial soil wedge.

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