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

Soil Pressure on Retaining Walls

1998 ◽  
pp. 184-203
Author(s):  
George E. Lazebnik ◽  
Gregory P. Tsinker
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.

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.

scholarly journals Design of Free Cantilever, Counter fort and T-flanged Cantilever Type Retaining Wall

2019 ◽  
Vol 8 (6) ◽  
pp. 3875-3877
Keyword(s):  
Retaining Wall ◽  
Water Storage ◽  
Earth Pressure ◽  
Bending Moment ◽  
Retaining Walls ◽  
Project Work ◽  
Passive Earth Pressure ◽  
Soil Pressure ◽  
Steel Bars ◽  
Wing Walls

Retaining walls are widely used as permanent structures for retaining soils at different levels.Type of the wall depends on the soil pressure, such as active or passive earth pressure and earth pressure at rest and drainage conditions. Types of walls generally used are gravity walls, RCC walls, counterfort walls and buttress retaining walls. Retaining walls behavior depends on the wall height and retention heights of the soil at its backfill. Retaining walls are used with tying with more than one wall at perpendicular joints to retain liquids, water storage and materials storages such as dyke walls and tanks. Retaining walls excessively used in culverts and as well as in the bridges for construction of abutment wing walls supposed to resist soil pressures laterally applied perpendicular to the axis of the walls.Based on the present scenario used in retaining structures within the civil industries there requirements of height of walls are being increased due to lake of land and cost of sub structures being incurred in the project work, higher height of walls develops huge bending moment at the base because of the cantilever action of the walls, thus resulting in higher sections at the base which deploys into a uneconomical zone so different wall systems are required in different arrangements so as to transfer the loads with limited sections. In the present study retaining walls of height 6m, 9m and 12m are considered for study and the length of the walls considered as 30m and the material properties considered are M20 and Fe415 steel bars and the supports considered to be fixed at the base

scholarly journals ANALISIS PERBANDINGAN JENIS DINDING PENAHAN TANAH PADA TANAH GAMBUT

2021 ◽  
Vol 4 (3) ◽  
pp. 695
Author(s):  
David Thomson ◽  
Aniek Prihatiningsih
Keyword(s):  
Retaining Wall ◽  
Peat Soil ◽  
Retaining Walls ◽  
High Water ◽  
Organic Content ◽  
Capital City ◽  
Diaphragm Wall ◽  
Sheet Pile ◽  
Soil Pressure ◽  
East Kalimantan

Kalimantan is one of the 3 islands in Indonesia which has the largest peatlands. Moreover, in 2019 the President of the Republic of Indonesia Ir. H. Joko Widodo inaugurated the move of Indonesia's capital city from DKI Jakarta to East Kalimantan. The development of supporting infrastructure for the Capital City will inevitably occur, so that construction on peatlands cannot be avoided. The characteristics of peatlands as well as the impacts and risks that will occur when working on peatlands need to be considered. In this thesis, we will discuss the types of retaining walls that are most effective when applied to peatlands. Types of retaining walls that will be compared include gravity retaining walls, sheet sheet-type retaining walls, and soldier piles. The analysis will be carried out on the lateral stresses that occur and the collapse in each type of retaining wall. Coulumb soil pressure theory and Rankine soil lateral pressure theory are also used to support this analysis. Theoretically, solid or gap-free retaining walls are likely to be effective when applied to peat soils. This is due to the nature of peat soil which has high water and organic content. The depth of excavation on peat soil is calculated as deep as 9 meters. The deflection that occurs in the diaphragm wall is 0.354 m, the secant pile is 0.751 m, the concrete sheet pile is 1.09 m and the steel sheet pile is 2.73 m. Kalimantan adalah salah satu dari 3 pulau di Indonesia yang memiliki lahan gambut terluas. Terlebih lagi pada tahun 2019 Presiden Republik Indonesia Ir. H. Joko Widodo meresmikan perpindahan Ibukota Indonesia dari DKI Jakarta ke Kalimantan Timur. Pembangunan infrastruktur – infrastruktur pendukung Ibukota pasti akan terjadi, sehingga kontruksi pada lahan gambut tidak akan dapat terhindarkan. Sifat-sifat dari lahan gambut maupun dampak dan resiko yang akan terjadi pada saat melakukan pekerjaan di lahan gambut perlu dipertimbangkan. Pada skripsi ini akan membahas tentang jenis dinding penahan tanah yang paling efektif ketika diaplikasikan ke lahan gambut. Jenis dinding penahan tanah yang akan dibandingkan antara lain dinding penahan gravitasi, dinding penahan tanah tipe turap, dan soldier pile. Analisa akan dilakukan pada tekanan lateral yang terjadi dan keruntuhan pada tiap jenis dinding penahan tanah. Teori tekanan tanah Coulumb dan teori tekanan lateral tanah Rankine dipakai juga untuk mendukung analisis ini. Secara teoritis, dinding penahan tanah yang solid atau yang tidak mempunyai celah yang berkemungkinan akan efektif ketika diaplikasikan pada tanah gambut. Hal ini dikarenakan sifat tanah gambut yang mempunyai kadar air dan organik yang tinggi. Kedalaman galian pada tanah gambut yang diperhitungkan sedalam 9 meter. Defleksi yang terjadi pada diaphragm wall adalah sebesar 0,354 m, pada secant pile sebesar 0,751 m, pada turap beton sebesar 1,09 m dan pada turap baja sebesar 2,73 m.

Upper-bound approach for analysis of cantilever retaining walls

2010 ◽  
Vol 47 (9) ◽  
pp. 999-1010 ◽  
Author(s):  
H. Vrecl Kojc ◽  
L. Trauner
Keyword(s):  
Limit Equilibrium ◽  
Pressure Coefficient ◽  
Vertical Component ◽  
Retaining Walls ◽  
Embedment Depth ◽  
Vertical Force ◽  
Soil Pressure ◽  
Limit States ◽  
Passive Pressure ◽  
Cantilever Retaining Walls

The proposed method for the analysis of cantilever retaining walls is based on ultimate limit states, but in contrast to other methods, which are recognized worldwide, also considers the condition of vertical force equilibrium, which includes the wall unit weight and the vertical component of the soil–structure interaction. The two-dimensional analytical model with polygonal soil pressure distribution is based on two new characteristics: the parameter α and the passive pressure coefficient at the embedment depth, Kb. The kinematic approach of limit analysis is used to examine the limit equilibrium state of the cantilever retaining wall according to soil properties and other loadings. The failure mechanism, composed of a classical determination of the passive pressure in the embedded part of the wall and a kinematically admissible velocity field at the retained side of the wall, estimates the limiting value of the passive earth pressure at the embedment depth. The advantage of the proposed method is that it enables the design of more slender cantilever retaining walls, at which the comparable level of safety for geotechnical and structural bearing capacity limit states is reached, which is the basic condition for safe design of retaining structures.

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