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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: The bearing behavior of footings on layered soils has received significant attention from researchers, but most of the reported studies are limited to footings resting on the surface of the soil an....
Abstract: The bearing behavior of footings on layered soils has received significant attention from researchers, but most of the reported studies are limited to footings resting on the surface of the soil an...
55 citations
TL;DR: In this paper, a ¼ scale self-compacting concrete (SFRSCC) prototype of a residential building was designed, built and tested, and extensive experimental program includes material tests for characterizing the relevant properties of SFRSCC, as well as structural tests for assessing the performance of the prototype at serviceability and ultimate limit conditions.
Abstract: The reinforcement mechanisms at the cross section level assured by fibres bridging the cracks in steel fibre reinforced self-compacting concrete (SFRSCC) can be significantly amplified at structural level when the SFRSCC is applied in structures with high support redundancy, such is the case of elevated slab systems. To evaluate the potentialities of SFRSCC as the fundamental material of elevated slab systems, a ¼ scale SFRSCC prototype of a residential building was designed, built and tested. The extensive experimental program includes material tests for characterizing the relevant properties of SFRSCC, as well as structural tests for assessing the performance of the prototype at serviceability and ultimate limit conditions. Three distinct approaches where adopted to derive the constitutive laws of the SFRSCC in tension that were used in finite element material nonlinear analysis to evaluate the reliability of these approaches in the prediction of the load carrying capacity of the prototype.
55 citations
Cites background from "Foundation analysis and design"
...Reaction module [26] values of 50 and 25 MPa/mm were assumed for the soil in contact with, respectively, the bottom and lateral surfaces of the slab on soil....
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TL;DR: A practical and efficient approach of implementing second-order reliability method (SORM) is presented and illustrated for cases related to foundation engineering involving explicit and implicit limit state functions.
Abstract: SUMMARY
A practical and efficient approach of implementing second-order reliability method (SORM) is presented and illustrated for cases related to foundation engineering involving explicit and implicit limit state functions. The proposed SORM procedure is based on an approximating paraboloid fitted to the limit state surface in the neighborhood of the design point and can be easily carried out in a spreadsheet. Complex mathematical operations are relegated to relatively simple user-created functions. The failure probability is calculated automatically based on the reliability index and principal curvatures of the limit state surface using established closed-form SORM formulas. Four common foundation engineering examples are analyzed using the proposed method and discussed: immediate settlement of a flexible rectangular foundation, bearing capacity of a shallow footing, axial capacity of a vertical single pile, and deflection of a pile under lateral load. Comparisons with Monte Carlo simulations are made. In the case of the laterally loaded pile, the friction angle of the soil is represented as a one-dimensional random field, and pile deflections are computed based on finite element analysis on a stand-alone computer package. The implicit limit state function is approximated via the response surface method using two quadratic models. Copyright © 2011 John Wiley & Sons, Ltd.
55 citations
Cites background or methods from "Foundation analysis and design"
...where influence factors I1 and I2 may be calculated using Steinbrenner’s equations or using Table 5‐2 in Bowles [34]....
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...The composite Steinbrenner influence factor Is is given by: Is ¼ I1 þ 1−2ν1−ν I2 (9) where influence factors I1 and I2 may be calculated using Steinbrenner’s equations or using Table 5‐2 in Bowles [34]....
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...95 (or if necessary, a more accurate value can be interpolated from Figures 5 –7 of Bowles [34])....
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...2012; 36:1387–1409 DOI: 10.1002/nag shallow, that is, D = 3m compared with the width B, and hence IF is assumed to be 0.95 (or if necessary, a more accurate value can be interpolated from Figures 5 –7 of Bowles [34])....
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...Based on elastic theory, the settlement ΔH of a flexible rectangular foundation base of dimension B× L under contact stress qo on a uniform soil with Poisson’s ratio ν and elastic modulus Es can be computed as follows [34]:...
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TL;DR: In this paper, a multiplatform simulation of a highway overcrossing bridge is introduced where the embankments, abutments, and pile groups are modeled in a powerful finite element (FE) package with nonlinear soil material model while the bridge is modeled in another FE package that excels in fiber-based frame analysis.
Abstract: A multiplatform simulation of a highway overcrossing bridge is introduced where the embankments, abutments, and pile groups are modeled in a powerful finite-element (FE) package with nonlinear soil material model while the bridge is modeled in another FE package that excels in fiber-based frame analysis. The Meloland Road Overcrossing Bridge, which is heavily instrumented, is selected as a reference analysis model due to the existence of measured data. The components as well as the integrated system are verified through comparison with previous studies and measured data. The stiffness of abutments and pile foundations are evaluated by three-dimensional finite-element analysis and compared with those from previous investigations. The analytical models of abutments and foundations are combined with the structural model using the multiplatform analysis framework, UI-SimCor. The dynamic properties of the model for multiplatform analysis are compared with those evaluated from system identification techniques using recorded ground motion. Finally, response history analyses are conducted with recorded free-field ground motion. The analysis results are in very good agreement with measured response showing the promising potential of multiplatform dynamic simulation.
55 citations
TL;DR: In this paper, the authors developed analytical equations to estimate the lateral displacement capacity of steel-H piles in integral bridges with stub abutments subjected to cyclic thermal variations and used them in static pushover analyses of two steel H-piles driven in soil to obtain the maximum thermalinduced cyclic lateral displacements such piles can sustain.
55 citations
Cites background or methods from "Foundation analysis and design"
...For soft, medium, medium-stiff and stiff clay, corresponding values of Cu 1⁄4 20, 40, 80 and 120 kPa [15] and e50 1⁄4 0:02, 0....
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...5 and 40 are used in the parametric study [15]....
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