Book•
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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Dissertation•
24 Feb 2016
6 citations
Cites background from "Foundation analysis and design"
...Clayey type minerals predominate in swelling soils microstructure, generating these soils to absorb water in between their layers and then undergo volume changes (Bowels, 1988; Kalantari, 1991; Murphy, 2010)....
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TL;DR: In this article, an ultimate bearing capacity risk reduction factor is proposed to account for the variation and randomness in soil properties through a first-order Taylor series expansion, the mean...
Abstract: In this paper an ultimate bearing capacity risk-reduction factor is proposed to account for the variation and randomness in soil properties. Through a first-order Taylor series expansion, the mean ...
6 citations
TL;DR: In this paper, the authors evaluated the behavioral aspects of five strip foundations with constant width and different embedment depths in sandy soil under monotonic vertical loading, experimental and numerical finite element (FE) modelings were implemented.
Abstract: Embedded foundations have different behavioral characteristics in comparison to surface ones. In present study, to evaluate the behavioral aspects of five strip foundations with constant width and different embedment depths in sandy soil under monotonic vertical loading, experimental and numerical finite element (FE) modelings were implemented. Based on experimental results, the growth of foundation depth-to-width ratio from 0 to 1.2 caused the increase in ultimate bearing capacity and vertical stiffness for 33% and 23%, respectively. Moreover, regarding to the observed damages, an attempt was made to present an innovative categorization for dominant failure mode as a function of foundation embedment depth. The result of numerical framework designed in accordance with real material and interfaces properties showed a good agreement with experimental behavioral curves as well as ultimate bearing capacity and vertical stiffness. Achieved from FE modeling, the adequate dimensions for underlying soil model were suggested to eliminate any effect of boundary conditions on foundation vertical loading results. Finally, the validity of a common theoretical expression in literature for anticipating vertical stiffness of embedded foundation was explored. It was concluded that for considered domain of foundation embedment depth, the increase rate of vertical stiffness vs. foundation embedment curve achieved through theoretical expression was more than experimental and numerical results.
6 citations
22 Dec 2019
TL;DR: In this article, the subgrade reaction coefficient of a simple 3D frame subjected to horizontal symmetrical static load is analyzed and the response of the characteristic structural framework additionally loaded with horizontal static force is described.
Abstract: The aim of this paper is to show the influence of the subgrade reaction coefficient modelling on the simple 3D frame subjected to horizontal symmetrical static load. Since the work represents a continuation of the research on this topic, it was decided that the construction, in this case too, was built on the square foundations on granular soil. Different values of subgrade reaction coefficient obtained for the square foundation are the consequence of using different expressions defined by individual authors. Thus, one diagram shows each author’s relation between the width of the foundations and the value of the subgrade reaction coefficient. The response of the characteristic structural framework additionally loaded with horizontal static force is then described further in the paper.
6 citations
01 Jan 1987
TL;DR: In this article, the cause of the L'Ambiance Plaza building collapse was investigated and the most probable cause was loss of support at a lifting jack in the west tower during placement of an upper level package of three floor slabs.
Abstract: Results from an investigation to determine the cause of the collapse of the L' Ambiance Plaza building on April 23, 1987 are presented. The building was being constructed using the lift-slab method; collapse occurred during construction. The investigation included on-site inspections immediately following the collapse, review of eyewitness accounts of the collapse, review of project documentation, laboratory and field tests and analyses of the structure. Several potential failure mechanisms were investigated. The most probable cause of the collapse was determined to be loss of support at a lifting jack in the west tower during placement of an upper level package of three floor slabs. The loss of support was likely due to excessive deformation of the lifting angle in a shearhead followed by a lifting nut slipping off the lifting angle of the shearhead. The postulated failure mechanism was duplicated in laboratory experiments. The local failure propagated as loads were redistributed. The remaining jack rods along column line E supporting the package of floor slabs slipped off the lifting angles and the slabs failed in flexure and shear. These slabs fell causing the lower level slabs to fail.
6 citations