Numerical Analysis of Soil Nail Walls in Hybrid Retaining Wall Systems

2020 ◽  
Author(s):  
H. Abbas ◽  
R. El Sherbiny ◽  
A. Salam
Keyword(s):  
Numerical Analysis ◽  
Retaining Wall ◽  
Soil Nail

On Numerical Simulation of the Stepped Soil-Nail Wall

2013 ◽  
Vol 353-356 ◽  
pp. 692-695
Author(s):  
Chang Zhi Zhu ◽  
Quan Chen Gao
Keyword(s):  
Numerical Simulation ◽  
Numerical Analysis ◽  
Internal Force ◽  
Numerical Results ◽  
Analysis Model ◽  
Foundation Pit ◽  
Soil Nails ◽  
Soil Nail ◽  
Soil Nail Wall ◽  
Design And Construction

Based on an Engineering Example which was supported by the stepped soil-nail wall, a numerical analysis model was established by FLAC3D,and the process of the excavation and supporting was simulated, and the numerical results of the soil nails internal force and foundation pit deformation were obtained. The simulated result was consistent with the measured results. It shows that the method of FLAC3D numerical analysis can be used to the numerical analysis of foundation pit excavation and supporting, and it will provide the basis for the design and construction of practice project.

NUMERICAL AND PHYSICAL MODELLING OF KAOLIN AS BACKFILL MATERIAL FOR POLYMER CONCRETE RETAINING WALL

2015 ◽  
Vol 76 (2) ◽  
Author(s):  
Ali Arefnia ◽  
Khairul Anuar Kassim ◽  
Houman Sohaei ◽  
Kamarudin Ahmad ◽  
Ahmad Safuan A Rashid
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Retaining Wall ◽  
Laboratory Data ◽  
Physical Modelling ◽  
Horizontal Displacement ◽  
Polymer Concrete ◽  
The Finite Element Method ◽  
Backfill Material

 The failure mechanism of backfill material for retaining wall was studied by performing a numerical analysis using the finite element method. Kaolin is used as backfill material and retaining wall is constructed by Polymer Concrete. The laboratory data of an instrumented cantilever retaining wall are reexamined to confirm an experimental working hypothesis. The obtained laboratory data are the backfill settlement and horizontal displacement of the wall. The observed response demonstrates the backfill settlement and displacement of the retaining wall from the start to completion of loading. In conclusion, numerical modelling results based on computer programming by ABAQUS confirms the experimental results of the physical modelling.  

Numerical analysis of geocell-reinforced retaining wall failure modes

2018 ◽  
Vol 46 (3) ◽  
pp. 284-296 ◽  
Author(s):  
Fei Song ◽  
Huabei Liu ◽  
Liqiu Ma ◽  
Hongbing Hu
Keyword(s):  
Numerical Analysis ◽  
Failure Modes ◽  
Retaining Wall ◽  
Reinforced Retaining Wall

scholarly journals Numerical Analysis on the Performance of the Underwater Excavation

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Bo Li ◽  
Cangqin Jia ◽  
Guihe Wang ◽  
Jun Ren ◽  
Gaofeng Lu ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Retaining Wall ◽  
Lateral Wall ◽  
Surface Settlement ◽  
Design Parameters ◽  
Analysis Model ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Wall Deflection ◽  
Total Settlement

Based on the Yongdingmen Station of Beijing Metro, the underwater excavation method for deep foundation pit was introduced. This study constructed a numerical analysis model to analyze the performance of surface settlement and lateral wall deflection in the process of underwater excavation. Results showed that this method was better to control the surface settlement and lateral wall deflection compared with other dewatering excavations. In detail, most of the surface settlement was caused during the dry excavation stage and dewatering excavation stage while the deflection caused by underwater excavation only accounted for about 10% of the total settlement. Besides, the maximum settlement occurred 0.25∼0.5 H e behind the retaining wall and the value was 0.04% H e . Similar to the result of the surface settlement, most of the lateral wall deflection had been completed before the underwater excavation, which only caused about 7% of the total deflection. The maximum wall deflection and its location were approximately 0.06% H e and 0.5 H e , respectively. Moreover, a series of 3D numerical analyses were studied on the design parameters of the underwater excavation method. This study can be used as a reference for general performance and structural design of foundation pits with underwater excavation.

2D numerical analysis of a cantilever retaining wall backfilled with sand–tire chips mixtures

2019 ◽  
pp. 1-17 ◽  
Author(s):  
Hachemi Djadouni ◽  
Habib Trouzine ◽  
António Gomes Correia ◽  
Tiago Filipe da Silva Miranda
Keyword(s):  
Numerical Analysis ◽  
Retaining Wall ◽  
Tire Chips

Calculating Method of Active Earth Pressure behind Rigid Retaining Wall Based on Pseudo-Dynamic Theory

2011 ◽  
Vol 368-373 ◽  
pp. 2932-2938
Author(s):  
Kui Hua Wang ◽  
Deng Hui Wu ◽  
Shao Jun Ma ◽  
Wen Bing Wu
Keyword(s):  
Numerical Analysis ◽  
Dynamic Theory ◽  
Retaining Wall ◽  
Earth Pressure ◽  
Active Earth Pressure ◽  
Active Force ◽  
Calculating Method ◽  
Seismic Active Earth Pressure ◽  
Action Point ◽  
Seismic Force

By means of pseudo-dynamic theory, a new calculating method is presented to calculate the pseudo-dynamic seismic active earth pressure behind rigid retaining wall. Considering time and phase difference within the backfills, the horizontal slices is used to analyze the distribution of seismic active force behind retaining wall in more realistic manner. Under the assumption that the soil backfills are rigid body, the equations derived in this paper can be degenerated to Mononobe-Okabe equations. Through numerical analysis, it is shown that the values of seismic active force obtained from present study are smaller than those obtained from Mononobe-Okabe theory and the distribution of seismic force along the depth of the wall is nonlinear. It is also found that the action point of the total seismic active earth pressure is higher than one third of the wall height, which is corresponding to previous experimental results.

scholarly journals Dynamic Numerical Analysis of Displacement Restraining Effect of Inclined Earth-Retaining Structure during Embankment Construction

2019 ◽  
Vol 9 (11) ◽  
pp. 2213 ◽  
Author(s):  
Su-Won Son ◽  
Minsu Seo ◽  
Jong-Chul Im ◽  
Jae-Won Yoo
Keyword(s):  
Numerical Analysis ◽  
Maximum Stress ◽  
Lateral Displacement ◽  
Retaining Wall ◽  
Field Tests ◽  
Front Wall ◽  
Construction Process ◽  
Construction Methods ◽  
Excavation Process ◽  
The Stability

Retaining walls are generally used for temporary installations during the excavation process of a construction project. They are also utilized to construct embankments in order to extend a railway facility. In this case, a retaining wall is installed during the construction process and contributes to the resistance of large amounts of stress, including the railway load. However, it is generally difficult to retain walls to maintain their stability. Therefore, alternative construction methods, such as the use of an inclined earth-retaining wall, have been utilized to suppress the lateral displacement. The stability is verified in advance through field tests; however, the maximum stress acting on the railway is thought to be the concentrated railway load. In this study, a two-dimensional numerical analysis was conducted by changing the railway load to a dynamic load. The analysis was applied according to the number of H-piles of the same length (10 m) when only the front wall was installed and when a back support was also applied. It was determined that the lateral displacement of the latter case is smaller than that of the former, whereas the resistance to dynamic loading of the former case is greater.

The Research of the Governance of Instability Retaining Wall

2014 ◽  
Vol 1065-1069 ◽  
pp. 85-88
Author(s):  
Gang Qiu ◽  
Xin Sheng Ge
Keyword(s):  
Retaining Wall ◽  
Retaining Walls ◽  
Design Parameters ◽  
Engineering Practice ◽  
Construction Process ◽  
Reinforcement Scheme ◽  
Soil Nail ◽  
Joint Construction ◽  
Jet Grouting ◽  
Pavement Reinforcement

According to retaining walls of joint construction buildings and office building of the mine of three yuan weizi town, outdoor pavement reinforcement of engineering practice, introduced the design parameters and construction process of the high-pressure jet grouting pile, soil nail wall and drilling grouting, the results showed that reinforcement scheme is reasonable and feasible, there is reference to other similar projects.

Study on Retaining Work of the Engineering Landslide

2012 ◽  
Vol 166-169 ◽  
pp. 2566-2569
Author(s):  
Feng Yan Qin ◽  
Jin Song Tu ◽  
Qin Yun Ge
Keyword(s):  
Retaining Wall ◽  
Retaining Walls ◽  
Development Trend ◽  
Soil Nail ◽  
Anchor Cable ◽  
Reinforced Earth ◽  
Treatment Measures ◽  
Scope Of Application ◽  
Reinforcement Measures ◽  
The Development Trend

In this paper the features and applicable ranges of the traditional landslide treatment measures were analyzed, such as anti-slide retaining walls, anti-slide piles, prestressed anchors, bolts and others . Through the analysis of engineering landslide treatment present situation, the advantage and scope of application was elaborated, which has been used only in recent years, such as the pre-stressed anchor cable pile, the lattice frame anchor, prestress concrete lattice frame anchor, anchor soil nail reinforced earth retaining wall and other new types of retaining the reinforcement measures. Finally, the development trend of engineering landslide are put out. Some suggestions are put forword for the similar engineering landslide governance and protection.

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