Topic
Lateral earth pressure
About: Lateral earth pressure is a research topic. Over the lifetime, 5334 publications have been published within this topic receiving 62552 citations.
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TL;DR: In this article, a full-scale experimental study was conducted in 2007 and the results of the simulation were compared with the data from the experimental study in terms of the load-deflection curves of the drilled shaft, the deflection profiles of the MSE wall facing, the lateral earth pressure increase on the mSE wall, and the strain increase in geogrid reinforcement.
37 citations
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TL;DR: In this paper, the original Protodyakonov's arch model is modified to calculate the vertical pressure on deeply buried pipes for shallow burial depth less than 5 m, and the calculated earth pressure is applied on top of soil wedges.
37 citations
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TL;DR: In this paper, the authors presented four calculation methods of curved jacking force, including the Hertz contact method, Shimada method, and the Persson contact method to predict the frictional resistance of pipe-soil and pipe-mud concurrently.
37 citations
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TL;DR: In this paper, an elastic overburden is proposed as a replacement for traditional tension cracks, and a statically determinate and solvable mathematical model for the limit equilibrium problem is established without considering the stress-strain relationship of the soil.
Abstract: The slip-line method is commonly used to solve the limit earth pressure on retaining walls, but to date there are still a number of problems that have not yet been solved. Based on limit equilibrium theory, the backfill is considered to be an ideal elastic-plastic material, which obeys the Mohr–Coulomb yield criterion, and is assumed to be an ideal continuous medium that is isotropic, homogeneous and incompressible (or non-expansive). Various factors of influence are considered in the calculation model. An elastic overburden is proposed as a replacement for traditional tension cracks. A new concept – stress singularity – and its stress boundary conditions are introduced, and a statically determinate and solvable mathematical model for the limit equilibrium problem is established without considering the stress–strain relationship of the soil. The slip-line stress field in the plastic zone of the backfill is solved by using the slip-line method, following which the active earth pressure on retaining walls a...
37 citations
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TL;DR: In this paper, the authors established a benchmark test using a simple statically determinate approach, in order to check if different design procedures satisfy equilibrium, and examined three existing design methods: AASHTO, National Concrete Masonry Association, and K and subscript o-stiffness.
Abstract: Common design of MSE walls is based on a lateral earth pressure approach. A key aspect in design is the determination of the reactive force in each reinforcement layer so as to maintain the system in equilibrium. This force leads to the selection of reinforcement with adequate long term strength. It is also used to calculate the pullout resistive length needed to ensure the capacity of each layer to develop strength. Lateral earth pressures used in design may or may not satisfy basic global equilibrium of the reinforced soil mass. Hence, the present work establishes a benchmark test using a simple statically determinate approach, in order to check if different design procedures satisfy equilibrium. Basic statics indicate that such a test is necessary, but not sufficient, to ascertain the validity of the calculated reactive force. Three existing design methods are examined: AASHTO, National Concrete Masonry Association, and K and subscript o-stiffness. AASHTO, which is the simplest to apply and generally considered conservative, satisfies the benchmark test. However, it may yield very conservative results if one considers the facing to play a major role. NCMA is likely satisfactory if one explicitly accounts for the facing shear resistance in assessing the reaction in the reinforcement. The emerging K and subscript o-stiffness approach, which is empirical, may violate statics potentially leading to underestimation of the reinforcement force.
37 citations