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Foundation analysis and design
01 Jan 1968-
TL;DR: In this paper, Fondation de soutenagement et al. presented a reference record for Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08.
Abstract: Keywords: Fondation ; Mur de soutenement ; Pieux ; Capacite portante ; Ancrage ; Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08
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TL;DR: In this article, a variational approach for the analysis of vertical deformation of pile groups is presented, assuming that the deformation can be represented by a finite series, and applying the principle of minimum potential energy to determine the deformations of piles.
Abstract: A variational approach for the analysis of vertical deformation of pile groups is presented. The method assumes that the deformation of piles can be represented by a finite series. The method applies the principle of minimum potential energy to determine the deformation of piles. Using this method, an analytical solution for pile groups in soil modelled by the theoretical load-transfer curves can be obtained rigorously. Analysis of field tests indicates that the method can predict the performance of pile groups reasonably well.
39 citations
TL;DR: In this paper, the effects of discrete palm fibers on the consolidation and shear behavior of a randomly reinforced clay soil were investigated and the results indicated that the inclusion of the fiber reinforcement within the soil causes decrease in preconsolidation pressure and increase in compressibility and swelling indices.
Abstract: This paper presents the results of an experimental investigation into the effects of discrete palm fibers on the consolidation and shear behavior of a randomly reinforced clay soil. Three groups of reinforced soil samples were prepared at three different fiber contents (10, 20 and 30 %). Consolidation and triaxial tests were carried out on the samples. The results indicate that the inclusion of the fiber reinforcement within the soil causes decrease in preconsolidation pressure and increase in compressibility and swelling indices. In addition, the strength and friction angle increase considerably in terms of total and effective stresses. The results also show that the increase in the slope of the critical state line in \( q :p^{\prime } \)space is a function of fiber content.
39 citations
Cites methods from "Foundation analysis and design"
...However, the failure stresses in the experiments were taken as the stresses corresponding to axial strain of 20 % as suggested by Head (1986) and Bowles (1987). Typical deviator stress-axial strain and pore-water pressure-axial strain curves (for cell pressure of 400 kPa) for the unreinforced samples and samples...
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...However, the failure stresses in the experiments were taken as the stresses corresponding to axial strain of 20 % as suggested by Head (1986) and Bowles (1987)....
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TL;DR: In this article, a new limit equilibrium solution is proposed, based on the backfill displacements obtained from the simulations, and a better agreement is obtained between the new solution and experimental results for the required cohesion and factor of safety.
Abstract: Backfill is increasingly used in underground mines to reduce the surface impact from the wastes produced by the mining operations. But the main objectives of backfilling are to improve ground stability and reduce ore dilution. To this end, the backfill in a stope must possess a minimum strength to remain self-standing during mining of an adjacent stope. This required strength is often estimated using a solution proposed by Mitchell and co-workers, which was based on a limit equilibrium analysis of a wedge exposed by the open face. In this paper, three dimensional numerical simulations have been performed to assess the behavior of the wedge model. A new limit equilibrium solution is proposed, based on the backfill displacements obtained from the simulations. Comparisons are made between the proposed solution and experimental and numerical modeling results. Compared with the previous solution, a better agreement is obtained between the new solution and experimental results for the required cohesion and factor of safety. For large scale (field) conditions, the results also show that the required strength obtained from the proposed solution corresponds quite well to the simulated backfill response.
38 citations
Additional excerpts
..., d = (2/)/3, is often used [14,15]....
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TL;DR: In this article, the interaction between the backfill and surrounding rock mass has to be evaluated to ensure the secure application of backfill in mine stopes, which helps provide a safe workplace underground.
Abstract: Backfilling of mine stopes helps provide a safe workplace underground. The interaction between the backfill and surrounding rock mass has to be evaluated to ensure the secure application of backfil...
38 citations
TL;DR: In this article, a bearing capacity analysis of shallow footings and strip foundations subjected to axial, eccentric, and inclined loading is presented for noncohesive soils, and the influences of load eccentricity and inclination, subsoil surface inclination, and depth and shape of foundation with regard to classical and new calculation methods are discussed.
Abstract: A bearing‐capacity analysis of shallow footings and strip foundations subjected to axial, eccentric, and inclined loading is presented for noncohesive soils. The influences of load eccentricity and inclination, subsoil surface inclination, and depth and shape of foundation with regard to classical and new calculation methods are discussed. Comparisons of different formulas of bearing‐capacity factors, shape and depth factors, load and surface inclination factors, as well as values of these factors are presented. A methodology and analysis of model test results of both the writer and other authors are also presented and compared with different calculation methods, which show considerable underestimation of results with respect to classical calculation methods and reasonable agreement for new ones. The results of experiments for strip foundations and footings have been statistically evaluated and empirical formulas to determine Nγ values proposed. The quantitative data presented can be useful for verificati...
38 citations