Interface Model for Dynamic Soil‐Structure Interaction

Zaman, Musharraf; Desai, C. S.; Drumm, Eric C.

doi:10.1061/(asce)0733-9410(1984)110:9(1257)

Cited by 66 publications

(17 citation statements)

References 8 publications

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“…It is important to emphasize that the soil-structure interaction has been considered as an important matter when studying the vibratory motion in real structures (Zaman et al, 1984) since this interaction may significantly influence the behavior of dynamics-based problems. For this reason, the foundations must be observed in the numerical simulations when elaborating mathematical models, as said by Yazdchi et al (1999).…”

mentioning

confidence: 99%

Evaluation of limit state of stress and strain of free-fixed columns with variable geometry according to criteria from the Brazilian code for concrete structures

Wahrhaftig

Magalhães

Siqueira

2020

Lat. Am. j. solids struct.

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The ultimate limit state of stability by equilibrium bifurcation, the limit states for stress and strain resulting from this condition were evaluated for an extremely slender real structure of reinforced concrete, with geometry varying along its length. The aspects related to nonlinearities of the material were considered through the recommendations on NBR 6118:2014, from the Brazilian Association of Technical Standards (ABNT). In the analytical solution, developed for stability analysis, all elements of the structural dynamics present in the system were taken into account, including the column self-weight. The critical buckling load was then dynamically defined to different instants of time. Reductions of 70% for the modulus of elasticity and 59% for the critical buckling force were found in analyses performed from zero and five thousand days. It was also possible to obtain the induced stresses on the homogenized cross-sections and those transferred to reinforcement steel bars. KeywordsLimit states, critical buckling load, analytical solution, NBR 6118:2014. Graphical AbstractEvaluation of limit state of stress and strain of free-fixed columns with variable geometry according to criteria from the Brazilian code for concrete structures Alexandre de Macêdo Wahrhaftig et al.

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confidence: 99%

Evaluation of limit state of stress and strain of free-fixed columns with variable geometry according to criteria from the Brazilian code for concrete structures

Wahrhaftig

Magalhães

Siqueira

2020

Lat. Am. j. solids struct.

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“…It can also model the difference in the accumulated plastic strains at different load levels under cyclic loading, with the help of the term 1/(1 À å 0 ) in the equation. The number of hysteretic cycles N was also used by Zaman et al (1984) in their Figure 3. Conceptual sketch of bounding surface model modeling of the cyclic behavior of soil/structure interfaces.…”

Section: Type a Geosyntheticsmentioning

confidence: 99%

Modeling cyclic behavior of geosynthetics using mathematical functions combined with Masing rule and bounding surface plasticity

Liu

Ling

2006

Geosynthetics International

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In the numerical analysis of geosynthetic-reinforced soil structures subjected to earthquake loadings, the constitutive model for the geosynthetic reinforcement is important, because it affects the accuracy of numerical simulations. Two different approaches for modeling the monotonic and cyclic behavior of geosynthetic reinforcements are discussed in this paper: a nonlinear mathematical function combined with the modified Masing rule, and bounding surface plasticity. The Masing rule was modified so that it can simulate the hysteretic behavior of geosynthetics under cyclic loading, including the decrease in the residual strain rate with the number of loading cycles (cyclic strain-hardening). For the bounding surface model, different bounding lines were defined for primary loading, unloading, and reloading. An exponential function was used as the bounding line for primary loading in order to capture the stiffening behavior of some geosynthetics. Constitutive models were proposed based on the two approaches for different types of geosynthetic. Experimental results for six geogrids were used to verify the proposed models, and it was shown that they were able to capture the nonlinear and hysteretic behavior of the corresponding geosynthetics. It was shown that the approach utilizing a mathematical function combined with the modified Masing rule is simple and straightforward. Bounding surface plasticity provides an approach that is more rational for simulating the cyclic behavior of geosynthetics, especially for the case of irregular earthquake loading.

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“…Several authors have attempted to analyze the load transfer along the anchor using the "t-z" method (Coyle and Reese, 1966;Davis and Plumelle, 1982), which is commonly applied in design of friction piles, or more complex interface soil models (Zaman et al, 1984;Frank et al, 1982). However, rational anlysis of the ground-anchor interaction requires appropriate interface properties that are difficult to estimate.…”

Section: Ground Anchors and Soil Nails In Retaining Structures 877mentioning

confidence: 99%

Ground Anchors and Soil Nails in Retaining Structures

Juran¹,

Elias²

1991

Foundation Engineering Handbook

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Interface Model for Dynamic Soil‐Structure Interaction

Cited by 66 publications

References 8 publications

Evaluation of limit state of stress and strain of free-fixed columns with variable geometry according to criteria from the Brazilian code for concrete structures

Evaluation of limit state of stress and strain of free-fixed columns with variable geometry according to criteria from the Brazilian code for concrete structures

Modeling cyclic behavior of geosynthetics using mathematical functions combined with Masing rule and bounding surface plasticity

Ground Anchors and Soil Nails in Retaining Structures

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