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
Citations
More filters
••
TL;DR: In this paper, an analytical model based on branch mode decoupling method is presented to carry out parametric analysis of eccentric structure-soil interaction system, and the influence of eccentricity ratio, torsional to translational frequency ratio, height-to-base ratio, and foundation flexibility on the curve and peak value of transfer functions and torsionally coupled degree are analyzed and discussed systematically.
8 citations
••
TL;DR: In this article, the uses of alum sludge (AS) as hydraulic barrier (HB) layer and daily cover (DC) material were investigated using two-dimensional finite element analysis.
Abstract: In this study, the uses of alum sludge (AS) as hydraulic barrier (HB) layer and daily cover (DC) material were investigated using two-dimensional finite element analysis. In the analyses, typical landfill geometries were carried out for two different side-slope steepness (2H:1V and 3H:1V), two different HB materials (compacted clay (CC) and AS) and four different DC scenarios (no DC, sand (S), compost, and AS), two landfill heights (20 m and 30 m) and two different municipal solid waste decomposition conditions (freshly disposed waste and old waste), and the effects of these variables on the displacements, and factor of safety (FS) values were investigated. For all the cases studied, FS values higher than 1.5 were obtained which indicated that the landfills were stable against sliding, and the displacement values were within the limits reported in the literature. The results of the finite element analysis also showed that AS used as HB and DC material yielded compatible results with the ones for t...
8 citations
••
14 Oct 2007
TL;DR: In this article, a coordinated field and laboratory investigation was conducted to evaluate the primary and long-term secondary compression characteristics of organic soils and peat existing under SR 15 / US 98 in northwest Palm Beach County, Florida.
Abstract: A coordinated field and laboratory investigation was conducted to evaluate the primary and long-term secondary compression characteristics of organic soils and peat existing under SR 15 / US 98 in northwest Palm Beach County, Florida. The specific objectives were: (i) to conduct Piezocone Penetration Tests (CPTu) accompanied with porewater dissipation experiments for predicting the Coefficient of Consolidation (Cv); (ii) to perform consolidation testing on organic silts and peat collected from various depths at each CPTu location; (iii) to conduct secondary compression tests at constant effective stress representing the in-situ conditions; and (iv) to establish the (Cα / Cc) ratios for Florida organic soils following the well-known Time-Stress-Compressibility concepts. The horizontal coefficient of consolidation (Ch) was predicted from porewater dissipation data, which was subsequently used to calculate the vertical coefficient of consolidation (Cv), and compared with laboratoryderived properties. It was found that the primary consolidation process in laboratory specimens is quite rapid, leading to the secondary compression phase. The Secondary Compression Index, Cα was calculated during the first log cycle after the End-ofPrimary (EOP) consolidation, and a unique relationship between Cc and Cα was established. Results indicated that for all practical purposes, the (Cα / Cc) ratio had constant values ranging from 0.03 to 0.05, which were consistent with the values reported in the literature for similar soils. BACKGROUND AND OBJECTIVES The western and northern parts Palm Beach County, Florida have shallow layers of organic silts and peat under existing roads, which often exhibit large amount of cracking, distortion and settlement in a short period of time after reconstruction work. Generally, the primary consolidation process in organic layers is quite rapid, followed by significant secondary compression stages under sustained effective overburden
8 citations
•
TL;DR: In this article, the effect of soil flexibility on the performance of building frame is investigated, and two soil structure interaction modes are considered for the analysis; one is replacing soil by spring of equivalent stiffness (Discrete Support) and second by considering the whole soil mass (Elastic Continuum).
Abstract: The seismic response of a structure is greatly influenced by Soil Structure Interaction (SSI). In this study the effect of soil flexibility on the performance of building frame is investigated. Two SSI modes are considered for the analysis; one is replacing soil by spring of equivalent stiffness (Discrete Support) and second by considering the whole soil mass (Elastic Continuum). Symmetric space frames resting on isolated footing of configurations 2 bay 2 storey (2X2X2), 2 bay 5 storey (2X2X5) and 2 bay 8 storey (2X2X8) are considered with fixed base and flexible base. The spring model is developed by using stiffness equation along all 6 DOF and elastic continuum model is developed by Finite Element Method using SAP-2000. For SSI study three types of soil are considered i.e. Hard, Medium Hard and Soft Soil. The dynamic analysis is carried out using Response Spectrum, given in IS1893-2002. The influence of soil structure interaction on various structural parameters i.e. natural time period, base shear, roof displacement, beam moment and column moment are presented. The study reveals that the SSI significantly affects on the response of the structure. Finite Element Method has proved to be the effective method for consideration of elastic continuum below foundation.
8 citations
••
TL;DR: In this paper, the correlation of Menard Deformation Modules (EM) with the corrected SPT blow counts (SPT-N60) and shear wave velocity (Vs) data were conducted.
8 citations