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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TL;DR: In this article, a numerical method for the dynamic analysis of shallow-buried reinforced concrete box structures under the effects of airblast load is developed, based on the Single-Degree-of-Freedom (SDOF) approach.
8 citations
01 Jan 2010
7 citations
Cites methods from "Foundation analysis and design"
...45 based on recommendations in Bowles (1995). The FLUSH model was calibrated against the 5% damped response spectra generated from the top center soil accelerometer (5C) recording....
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01 Apr 2005
TL;DR: In this article, the influence of non-uniform subgrade support on pavement responses (stress and deflection) that affect pavement performance was investigated, and the authors concluded that subgrade/subbase stiffness increases localized deflections and causes principal stress concentrations in the pavement, leading to fatigue cracking and other types of pavement distresses.
Abstract: To provide insight into subgrade non-uniformity and its effects on pavement performance, this study investigated the influence of non-uniform subgrade support on pavement responses (stress and deflection) that affect pavement performance. Several reconstructed portland cement concrete (PCC) pavement projects in Iowa were studied to document and evaluate the influence of subgrade/subbase non-uniformity on pavement performance. In situ field tests were performed at 12 sites to determine the subgrade/subbase engineering properties and develop a database of engineering parameter values for statistical and numerical analysis. Results of stiffness, moisture and density, strength, and soil classification were used to determine the spatial variability of a given property. Natural subgrade soils, fly ash-stabilized subgrade, reclaimed hydrated fly ash subbase, and granular subbase were studied. The influence of the spatial variability of subgrade/subbase on pavement performance was then evaluated by modeling the elastic properties of the pavement and subgrade using the ISLAB2000 finite element analysis program. A major conclusion from this study is that non-uniform subgrade/subbase stiffness increases localized deflections and causes principal stress concentrations in the pavement, which can lead to fatigue cracking and other types of pavement distresses. Field data show that hydrated fly ash, self-cementing fly ash-stabilized subgrade, and granular subbases exhibit lower variability than natural subgrade soils. Pavement life should be increased through the use of more uniform subgrade support. Subgrade/subbase construction in the future should consider uniformity as a key to long-term pavement performance.
7 citations
Journal Article•
TL;DR: In this article, the authors describe the geotechnical properties of Al-Ammarah soil of Ammarah city in Messan Governorate-southern parts of Iraq.
Abstract: This paper describes the geotechnical properties of Al-Ammarah soil of Ammarah city in Messan Governorate-southern parts of Iraq. Data and other information taken from numbers of geotechnical reports that performed under the supervision of Consulting Engineering Bureau of Baghdad University. This research is devoted to study the correlation between different physical properties such as (LL, PI, LI, n,t, e) with different mechanical properties such as (qu, cc, cs, SPT). The correlation is verified using simple regression analysis. From the regression results it was found that there is direct correlation between different parameters. By using the correlation-with some information- preliminary investigation stages and studies of any structure can be performed to find indicative design parameters. ةصلاخلا
7 citations
TL;DR: A mathematical model is applied to simulate the effect of “vascular normalization” (as proposed by Jain in Nat Med 7:987–989, 2001) on the IFP profile and discuss a number of possible time scales suggested by the model and propose a tumour-dependent time scale that leads to results in agreement with experimental observations.
7 citations