Foundation analysis and design

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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.

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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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Journal Article•DOI•

Reconstructing the slip velocities of the 1202 and 1759 CE earthquakes based on faulted archaeological structures at Tell Ateret, Dead Sea Fault

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Gregor Schweppe¹, Klaus-G. Hinzen¹, Sharon K. Reamer¹, Shmuel Marco²•Institutions (2)

University of Cologne¹, Tel Aviv University²

01 Aug 2021-Journal of Seismology

TL;DR: In this paper, the authors used detailed laser scans and discrete element models of the fortification walls to deduce the slip velocity during the earthquake and test whether the in-situ observed deformation pattern of the walls allows quantification of the amount both sides of the fault moved and whether post-seismic creep contributed to total displacement.

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Abstract: Archaeological structures built across active faults and ruptured by earthquakes have been used as markers to measure the amount of displacement caused by ground motion and thus to estimate the magnitude of ancient earthquakes. The example used in this study is the Crusader fortress at Tel Ateret (Vadum Iacob) in the Jordan Gorge, north of the Sea of Galilee, a site which has been ruptured repeatedly since the Iron Age. We use detailed laser scans and discrete element models of the fortification walls to deduce the slip velocity during the earthquake. Further, we test whether the in-situ observed deformation pattern of the walls allows quantification of the amount both sides of the fault moved and whether post-seismic creep contributed to total displacement. The dynamic simulation of the reaction of the fortification wall to a variety of earthquake scenarios supports the hypothesis that the wall was ruptured by two earthquakes in 1202 and 1759 CE. For the first time, we can estimate the slip velocity during the earthquakes to 3 and 1 m/s for the two events, attribute the main motion to the Arabian plate with a mostly locked Sinai plate, and exclude significant creep contribution to the observed displacements of 1.25 and 0.5 m, respectively. Considering a minimum long-term slip rate at the site of 2.6 mm/year, there is a deficit of at least 1.6 m slip corresponding to a potential future magnitude 7.5 earthquake; if we assume ~5 mm/year geodetic rate, the deficit is even larger.

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4 citations

Probabilistic models for the assessment of cyclic soil deformations

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Habib Tolga Bilge¹, Kemal Onder Cetin¹•Institutions (1)

Middle East Technical University¹

01 Dec 2006

TL;DR: In this paper, a maximum likelihood framework for probabilistic assessment of post cyclic deformations is described, and a database consisting of cyclic laboratory test results including maximum shear strains in conjunction with relative density, number of stress (strain) cycles and index test results is used for the development of probabilistically-based postcyclic deformation correlations.

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Abstract: A maximum likelihood framework for probabilistic assessment of post cyclic deformations is described. A database, consisting of cyclic laboratory test results including maximum shear strains in conjunction with relative density, number of stress (strain) cycles and “index” test results is used for the development of probabilistically-based post cyclic deformation correlations. For this purpose series of stress controlled cyclic triaxial tests were performed on laboratory constituted clean sand specimens consolidated isotropically to a confining pressure of 100 kPa. The proposed stochastic method allows full and consistent representation of uncertainties, including model imperfection and statistical uncertainty. Volumetric and shear strain boundary curves are developed for the assessment of post cyclic deformation problem. The resulting correlations represent a significant improvement over prior efforts, producing predictive relationships with enhanced accuracy and greatly reduced overall model uncertainty.

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4 citations

Cites methods from "Foundation analysis and design"

...Last but not least, documented relative density values were converted to equivalent 60 , 1 N as recommended by Bowles (1996). Figure 1 summarizes the database used for the development of new correlations....
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Dissertation•

Towards the Design of Gravity-Based Wind Turbine Foundations

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Saif Naser Shaban

01 Sep 2017

4 citations

Cites background or methods from "Foundation analysis and design"

...Otherwise when the bearing capacity is limited by settlement considerations, the net allowable pressure is reported (Bowles, 1997)....
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...The circumferential reinforcement seen in this figure is provided mainly for temperature and shrinkage control and to counteract any possible circumferential moment, which is usually minimal (Bowles, 1997)....
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...41: The bearing capacity areas used in calculations (Bowles, 1997)...
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...41: The bearing capacity areas used in calculations (Bowles, 1997) ....
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...The reason that the net pressure is reported when settlements control is that the settlements are caused by pressures in excess of the steady state soil conditions that prevailed before excavations and construction of the foundation for over consolidated soils (Bowles, 1997)....
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Journal Article•DOI•

Load Reductions on Buried Rigid Pipe

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Lawrence C. Rude¹•Institutions (1)

Virginia Tech¹

01 Jan 1983-Journal of Transportation Engineering-asce

TL;DR: In this paper, the authors showed by computer simulation that the size, shape, location, and composition of these inclusions need to be considered to minimize the loads carried by these structures.

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Abstract: Buried structures such as pipes and culverts are often installed in the ground with special soft inclusion materials whose purpose is to reduce the overburden pressure that these structures must support. This study showed by computer simulation that the size, shape, location, and composition of these inclusions need to be considered to minimize the loads carried by these structures. The validity of the computer simulation was authenticated by comparing the computer results with an instrumented culvert installed in a laboratory testing tank.

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4 citations

Journal Article•DOI•

Experimental and numerical study on the bearing capacity of single and groups of tapered and cylindrical piles in sand

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Ehsan Nasrollahzadeh¹, Nader Hataf¹•Institutions (1)

Shiraz University¹

04 Aug 2019-International Journal of Geotechnical Engineering

4 citations

Cites background from "Foundation analysis and design"

...Bowles (1997) also proposed 2.5D to 3.5D for the optimal center to center spacing of piles....
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...Several building codes such as BOCA (1993), NBC (1976) and Chicago (1994) suggest 2Dminimum center to center pile spacing (Bowles 1997)....
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Foundation analysis and design

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Cites methods from "Foundation analysis and design"

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Cites background from "Foundation analysis and design"

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