Extended Load/Unload/Reload Hyperbolic Model for Interfaces: Parameter Values and Model Performance for the Contact Between Concrete and Coarse Sand

Gómez, Jesús; Filz, George M.; Ebeling, Robert M.

doi:10.21236/ada392683

Cited by 5 publications

(9 citation statements)

References 7 publications

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“…In shear, the interface element essentially is an elasto‐plastic model, with an elastic stiffness of k s and yield strength S . The k s values were selected such that the resulting elasto‐plastic model gave an approximate fit of the hyperbolic‐type interface model proposed by Gomez et al (2000a, b). A comparison of the two models for initial loading (i.e., construction of the wall) is shown in Figure 7.…”

Section: Numerical Modelmentioning

confidence: 99%

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Response and Modeling of Cantilever Retaining Walls Subjected to Seismic Motions

Green

Olgun

Cameron

2008

Computer aided Civil Eng

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A series of nonlinear, explicit finite difference analyses were performed to determine the dynamic response of a cantilever retaining wall subjected to earthquake motions. This article outlines the calibration and validation of the numerical model used in the analyses and comparisons are presented between the results from the finite difference analyses and results from simplified techniques for computing dynamic earth pressures and permanent wall displacement (i.e., Mononobe-Okabe and Newmark sliding block methods). It was found that at very low levels of acceleration, the induced pressures were in general agreement with those predicted by the MononobeOkabe method. However, as the accelerations increased to those expected in regions of moderate seismicity, the induced pressures are larger than those predicted by the Mononobe-Okabe method. This deviation is attributed to the flexibility of the retaining wall system and to the observation that the driving soil wedge does not respond monolithically, but rather responds as several wedges. Ad- *

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Section: Numerical Modelmentioning

confidence: 99%

“… Calibration of the FLAC interface model to the hyperbolic‐type model proposed by Gomez et al (2000a,b). …”

Section: Numerical Modelmentioning

confidence: 99%

Response and Modeling of Cantilever Retaining Walls Subjected to Seismic Motions

Green

Olgun

Cameron

2008

Computer aided Civil Eng

View full text Add to dashboard Cite

show abstract

“…S was specified as a function of the interface friction angle 8. Based on the values of 8 for mediumdense sand against concrete given in Tables 3-7 and 3-8 of Gomez, Filz, and Ebeling (2000b), 8 = 31 deg was selected as a representative value.…”

Section: Interface Elementsmentioning

confidence: 99%

“…a. Compute the reference displacement along the interface Ar using the following expression. Representative values for Rß, K u n Jt and 6 were obtained from Gomez, Filz, and Ebeling (2000a).…”

Section: Interface Elementsmentioning

confidence: 99%

“…After the construction of the wall and prior to the application of the earthquake loading the k s values were changed to values consistent with the Gomez-Filz-Ebeling Version I load/unload/reload extended hyperbolic interface model (Gomez, Filz, and Ebeling 2000b). The procedure used to compute k, for the cyclic loading is outlined in the following equations.…”

Section: Interface Elementsmentioning

confidence: 99%

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