Behavior of soil retaining walls on deformable foundations

Huang, Chun‐Che; Luo, Woei Ming

doi:10.1016/j.enggeo.2009.01.003

Cited by 26 publications

(6 citation statements)

References 32 publications

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“…The water table, which has a considerable impact on lateral pressure, is crucial for the retaining wall. Rainfall infiltration has a major role in increasing the lateral force that affects the phreatic line [4] The water pressure created by the water table reduces the effective stresses that are detrimental to wall stabilization; it functions as extra pressures on the wall, forcing retaining wall to overturn and slide [5][6].…”

Section: Introductionmentioning

confidence: 99%

Study on sliding stability of porous-concrete retaining wall model test subjected to rainfall infiltration

Suryo

Arifi

Zaika

2021

IOP Conf. Ser.: Earth Environ. Sci.

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The common disadvantage of a conventional retaining wall is a heavy object as a block that is difficult to lift and handle conveniently. A drainage pipe is commonly used to displace water from the backfill. In areas with high annual rainfall, the soil could be saturated in a short time and added lateral load significantly. In this study, porous concrete was utilized as a retaining wall material with the advantages of the lighter weight of the block and additional drainage capability due to its high void ratio. A set of a laboratory-scale retaining walls using conventional and porous concrete walls was investigated through three different rainfall modes. To initiate the instability condition, a vertical load was applied then the lateral moving was recorded using LVDT sensors. Soil moisture content sensors recorded hydrologic responses of the saturation process. The loading test results showed that the porous concrete wall model was being displaced less than experienced by the conventional concrete wall. It shows that the porous concrete wall model can withstand the load as the additional lateral load from infiltrated rainwater dissipates rapidly. Therefore, the porous concrete wall has the advantage of being used as a Retaining Wall Material.

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Section: Introductionmentioning

confidence: 99%

Study on sliding stability of porous-concrete retaining wall model test subjected to rainfall infiltration

Suryo

Arifi

Zaika

2021

IOP Conf. Ser.: Earth Environ. Sci.

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“…Taking a deep excavation in soft-soil for a railway station in Hangzhou, in China as an example, FLAC3D (Chen and Xu 2008) software was applied to analyze the deformation of the foundation excavation and the effect of retaining configurations. The paper describes how the excavation process was systematically simulated and varying law of the horizontal displacement of diaphragm wall (Huang and Luo 2009), settlement (Shariatmadari et al 2006) of ground surface around foundation excavation and railway embankment and earth pressure, and also discusses the influence of retaining configurations such as triaxial cement mixing piles (Danziger and Danziger 2006) and diaphragm wall on the foundation excavation and surrounding environment. The paper shows that this is an effective research method for design optimization and safety monitoring.…”

Section: Introductionmentioning

confidence: 99%

Study on Deformation Characteristics of Deep Foundation Excavation in Soft-Soil and the Response of Different Retaining Configurations

Liu

2011

Geotech Geol Eng

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In recent years, many researchers have considered the mechanical characteristics of deep foundation excavation in soft-soil. The analysis of these deep excavations requires consideration of an uncertain, nonlinear, dynamic and complicated system, and involves consideration of soil strength, stability, deformation, fluid flow and interaction of soil and different retaining configurations. It is difficult to describe such a nonlinear system using traditional analysis. Therefore, in order to accurately describe the mechanical behavior of a representative deep excavation of the subway station, in this case, 3-Dimensional geotechnical numerical analysis method using FLAC3D software was applied. Using this tool, a study considering earth pressure, soil deformation and settlement was carried out. Furthermore, the response of different retaining configurations was deeply investigated. Triaxial cement mixing piles were considered as a way to optimize deformation of the deep excavation and reduce settlement of the ground surface and the railway embankment. The analysis indicated that the deeper the foundation excavation was, the larger the surface settlement and the smaller the earth pressure. The analysis also considered the mechanical effect of varying the wall thickness and the wall depth on the structure's deformation characteristics. The simulations indicated that a wall thickness of less than 1.4 m effectively reduced wall horizontal displacement, ground surface settlement and uneven settlement of railway embankment. While a variable wall embedded depth that was less than 52 m also changed the settlement of the excavation deformation and the ground surface. Therefore, the numerical results can agree with the practical project to imply that numerical method in the paper is applicable and reliable, which provides a new thought to research on deep excavation in soft-soil.

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“…They found that conventional equilibrium analyses are very conservative because they do not account for the stabilizing e ect of the downdrag forces generated by the settlement of the back ll. Huang and Luo [10] arranged several experiments on cantilever wall models to investigate the behavior of soil-retaining walls on deformable foundations. They found that the measured values of the coe cient of lateral pressure increased signi cantly with a decrease in subgrade sti ness.…”

Section: Introductionmentioning

confidence: 99%

A genetic-based model to predict maximum lateral displacement of retaining wall in granular soil

Johari

Najafi

2016

Scientia Iranica

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Retaining walls are one of the most common geotechnical structures. Horizontal displacement at the top of the retaining wall is an important parameter in design of retaining structures because of serviceability of the wall and adjacent structures. In this research, the Gene Expression Programming (GEP) is used for developing a model to predict this design parameter of retaining wall. The input parameters of the model consist of e ective period of adjacent structure, horizontal and rocking sti ness of the foundation of adjacent structure, density, Young's modulus, and friction angle of granular soil as well as the thickness and height of retaining wall. The output of the model is maximum lateral displacement of retaining wall. A database including 240 cases, created from 3D nite element modeling of a soil-retaining wall with an adjacent steel structure modeled as surcharge, is employed to develop the model. Comparison of the GEP-based model predictions with the simulated data indicates a very good performance and ability of the developed models in predicting maximum lateral displacement of retaining walls. Sensitivity and parametric analyses are conducted to verify the results. It is shown that soil density is the most in uential parameter in the maximum lateral displacement of retaining wall.

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Behavior of soil retaining walls on deformable foundations

Cited by 26 publications

References 32 publications

Study on sliding stability of porous-concrete retaining wall model test subjected to rainfall infiltration

Study on sliding stability of porous-concrete retaining wall model test subjected to rainfall infiltration

Study on Deformation Characteristics of Deep Foundation Excavation in Soft-Soil and the Response of Different Retaining Configurations

A genetic-based model to predict maximum lateral displacement of retaining wall in granular soil

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