scholarly journals A comparison of different approaches for the modelling of shallow foundations in seismic soil-structure interaction problems

2010 ◽  
pp. 421-426 ◽  
Keyword(s):  
Soil Structure ◽  
Shallow Foundations ◽  
Soil Structure Interaction ◽  
Structure Interaction

scholarly journals A New Simplified Prediction Method of the Contact State between Shallow Foundations and Swelling Ground

2021 ◽  
Vol 7 (5) ◽  
pp. 880-892
Author(s):  
Z. Farid ◽  
N. Lamdouar ◽  
J. Ben Bouziyane
Keyword(s):  
Soil Structure ◽  
Interaction Model ◽  
Prediction Method ◽  
Shallow Foundations ◽  
Soil Structure Interaction ◽  
Design Stage ◽  
Single Element ◽  
Variable Effect ◽  
Contact State ◽  
Structure Interaction

Prediction of the contact state between soil and structure is a key step in any study of shallow foundations resting on swelling soil. However, in practice, the foundation designer has no simple and rapid method, at the design stage, to define the contact conditions. This study presents a new method, both simple and reliable, to predict the contact state. To do this, a soil-structure interaction model is developed. The building behavior is investigated with the Euler–Bernoulli beam theory and the ground behavior is investigated with a Winkler model. The soil-structure interaction is then, studied at the equilibrium state. The thereby obtained equation is analyzed and all of its parameters are synthesized in a new factor named "Detachment Factor". The decidability of the contact is thus reduced to the study of this single element, which allows a reasonable approach to the knowledge of the surface rate engaged in the shallow footings - expansive soil interactions. The conclusions of the current study are validated against five cases treated in the literature in various regions around the world. In addition, a parametric study of the “Detachment Factor” shows that each of its parameters (i.e. swelling stiffness, shape of initial soil surface, permissible deflection, structure geometry and loads) has a variable effect on the contact state between a footing and swelling ground. But, the structure load has the most significant effect on it. Doi: 10.28991/cej-2021-03091697 Full Text: PDF

scholarly journals Analysis of constructive effect and soil-structure interaction in tall building projects with shallow foundations on sandy soils

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Olivia Catelan Marques ◽  
Leonardo Almeida Feitosa ◽  
Katia Vanessa Bicalho ◽  
Elcio Cassimiro Alves
Keyword(s):  
Soil Structure ◽  
Sandy Soils ◽  
Calculation Model ◽  
Shallow Foundations ◽  
Soil Structure Interaction ◽  
Stability Parameters ◽  
Mass System ◽  
Building Projects ◽  
Structure Interaction ◽  
High Rise

Abstract: The influence of incremental constructive effects (IE) and soil-structure interaction (SSI) on high-rise buildings of reinforced concrete with shallow foundations on sandy soils were analyzed. IE and SSI evaluations were carried out by the parameters of global instability, maximum horizontal displacements, foundation loads, and settlements of a symmetrical and non-symmetrical plant of a 23-storey building For the analysis of the IE, the variation of the modulus of elasticity was considered over time along with the phases of application of loads in the building. For ISS analysis, the continuous medium was considered, and the calculation model considers a multi-spring-mass system under the foundation of the building. The results show a significant redistribution in the foundation efforts and suggest that a failure in considering these effects along with the structure can lead to projects that do not meet the standard specifications regarding stability parameters and overall structure displacements.

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