scholarly journals Reinforced earth retaining wall under vertical and horizontal strip loading

1985 ◽  
Vol 22 (3) ◽  
pp. A97
Keyword(s):  
Retaining Wall ◽  
Horizontal Strip ◽  
Reinforced Earth ◽  
Strip Loading

scholarly journals Reinforced earth retaining wall under vertical and horizontal strip loading

1984 ◽  
Vol 21 (3) ◽  
pp. 407-418 ◽  
Author(s):  
J. T. Laba ◽  
J. B. Kennedy ◽  
P. H. Seymour
Keyword(s):  
Stress Distribution ◽  
Design Method ◽  
Retaining Wall ◽  
Design Procedure ◽  
Structural Response ◽  
Horizontal Load ◽  
Horizontal Strip ◽  
Reinforced Earth ◽  
Strip Loading ◽  
Load Intensity

A study was carried out on the structural response of a reinforced earth retaining wall model subjected to the action of a surcharge strip load aligned parallel to the wall head. Effects of both vertical and horizontal load components were investigated. Horizontal loads were applied in two directions, namely, towards the wall face and away from the wall face. The stress distribution pattern in the reinforcing elements and the change in stress distribution occurring in the reinforced earth medium were also studied. Results were generated for various loading conditions, including variations in the load distance from the wall face. Contour diagrams showing the ratio of reinforcing element stress to applied horizontal load intensity, as well as contour diagrams showing the ratio of horizontal soil stress to applied horizontal load intensity, were constructed. Experimental results were compared with the theoretical stress distribution that exists in a semi-infinite elastic medium, and also with design procedure currently in use for reinforced earth retaining walls under horizontal surcharge strip loading. Significant differences were found between the results based on the design method now in use and those obtained from the model study. Key words: reinforced earth, vertical and horizontal strip load, reinforcing elements, stress distribution, stress-sensitive regions, contours, deflections.

The Stability Analysis of Reinforced Earth Retaining Wall System and the Study of its Reinforcement Optimization

2011 ◽  
Vol 90-93 ◽  
pp. 2389-2392
Author(s):  
Hai Yan Ju ◽  
Gui Qing Gao ◽  
Jian Hua Li ◽  
Jiang Qian Zhao ◽  
Zhang Ming Li
Keyword(s):  
Cross Sections ◽  
Design Method ◽  
Retaining Wall ◽  
Physical Behavior ◽  
Reinforced Earth ◽  
Slope Treatment ◽  
The Stability ◽  
Relationship Of ◽  
The Relationship ◽  
System Program

Because the relationship is not considered between physical behavior and cross sections of bars, the conventional reinforced earth retaining wall design based on constant value would lead to some limitations: the haul-resistant coefficient of the top wall is not enough, but it goes beyond at the bottom of retaining wall. In the paper, considering the SARMA method, based on computing formula of traditional slope stability, the detailed programme is realized by the language of FORTRAN, it can make up deficiency that lies in the tradition reinforced earth retaining wall by considering the relationship of physical behavior and cross sections, lengths and layers of bars. Finally, the system program has been applied to a slope treatment project in Guangzhou. Compared with the design method of traditional regulations, it is demonstrated that the optimum length required is obtained, the cross section and length of bars are fully used, and the design is simplified.

Settlement Behavior of New Reinforced Earth Retaining Walls under Loading-Unloading Cycles

2012 ◽  
Vol 256-259 ◽  
pp. 215-219
Author(s):  
Yu Liang Lin ◽  
Yi He Fang
Keyword(s):  
Plastic Deformation ◽  
Elastic Deformation ◽  
Retaining Wall ◽  
Retaining Walls ◽  
Secant Modulus ◽  
Loading Level ◽  
Settlement Behavior ◽  
Reinforced Earth ◽  
Earth Structures ◽  
Elastic And Plastic Deformation

Three new types of reinforced earth structures were introduced including reinforced gabion retaining wall, green reinforced gabion retaining wall and flexible wall face geogrid reinforced earth retaining wall. In order to study settlement behavior of these three retaining walls, lab tests were carried out. Cyclic loading-unloading of different levels (0~50kPa, 0~100kPa, 0~150kPa, 0~200kPa, 0~250kPa, 0~300kPa, 0~350kPa) were imposed. The settlement behaviors of retaining walls were analyzed, and secant modulus when loading and unloading was obtained. Results show that retaining walls present great elastic and plastic deformation, and plastic deformation is greater than elastic deformation. Secant modulus decreases with the increase of loading-unloading cycles under the same loading level. Unloading secant modulus is bigger than loading secant modulus in the same cycle. With the increase of loading level, both elastic and plastic deformation increase, and plastic deformation increases more quickly than elastic deformation.

Reinforced earth retaining wall analysis and design

1986 ◽  
Vol 23 (3) ◽  
pp. 317-326 ◽  
Author(s):  
J. T. Laba ◽  
J. B. Kennedy
Keyword(s):  
Design Method ◽  
Retaining Wall ◽  
Tensile Force ◽  
Stress Transfer ◽  
Maximum Magnitude ◽  
Analysis And Design ◽  
Strength Capacity ◽  
Reinforced Earth ◽  
Tensile Forces ◽  
Combined Action

An experimental and theoretical study was conducted to assess the maximum tensile forces mobilized in a reinforced earth retaining wall, subjected to a vertical surcharge strip load or the combined action of vertical and horizontal surcharge strip loads. A simple design method for determining the maximum magnitude of the tensile force and its distribution with depth of the reinforced earth backfill was developed. The design method takes into consideration the ability of the reinforced earth wall system to retain its internl equilibrium by stress transfer from overstressed regions to those regions where the reinforcing elements have not yet reached their full frictional or strength capacity. The effect of the magnitude and location of the strip load on this phenomenon of stress transfer is shown. Favourable comparisons were obtained between the results given by the proposed design method and those from model tests. Key words: reinforced earth, vertical and horizontal surcharge strip load, reinforcing elements, internal stability, stress transfer.

The Application of Three Dimensional Drainage Flexible and Ecological Reinforced Construction in High-Speed Railway Station Roadbed

2012 ◽  
Vol 594-597 ◽  
pp. 2025-2029
Author(s):  
An Hui Wang ◽  
Hong Sheng He
Keyword(s):  
High Speed ◽  
Retaining Wall ◽  
Three Dimensional ◽  
Railway Station ◽  
High Speed Railway ◽  
Retaining Structure ◽  
Technical Requirements ◽  
Reinforced Earth ◽  
Key Points ◽  
New Type

This paper introduced a new type of retaining structure in roadbed of a high-speed railway Station--Three dimensional Drainage Flexible and Ecological Reinforced Earth Retaining Wall. Both side efforts of this structure have taken into account in lope protection and environmental protection, so it can be promoted in high-speed railway construction. Its main advantages included: ecology, environment protection, simple construction method, the better adaptability to differential settlement, the better stability, and so on. This type of retaining structure mainly composed by geogrid, ecological bags, tying belts, connecting buckle, etc. In the construction should pay attention to the technical requirements of the laying of geogrid, the stacking of the eco-bags and placing of connecting buckle and so on. This paper discussed briefly of the type structure from its advantages, its compositions and its construction key points

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