scholarly journals Structure-Soil-Structure Interaction between Underground Structure and Surface Structure

2018 ◽  
Author(s):  
Huai-feng Wang
Keyword(s):  
Surface Structure ◽  
Soil Structure ◽  
Underground Structure ◽  
Soil Structure Interaction ◽  
Structure Interaction

Study of Pushover Analysis on RC Framed Structure with Underground Structure Considering the Effects of Soil Structure Interaction

2020 ◽  
Vol 8 ◽  
pp. 22-29
Author(s):  
Nasala Dongol ◽  
Prachand Man Pradhan ◽  
Suman Manandhar
Keyword(s):  
Soil Structure ◽  
Response Spectrum ◽  
Underground Structure ◽  
Pushover Analysis ◽  
Standard Penetration Test ◽  
Soil Structure Interaction ◽  
Base System ◽  
Building Site ◽  
Structure Interaction ◽  
Fixed Base

This study states that the effects of soil structure interaction on the Reinforced Concrete (RC) framed structures is directly influenced by the soil properties of the site. Here, one preexisting structure is taken for the study. The building is a hospital building with two underground basements. Taking into account the actual soil condition of building site, this study provides idea on the soil structure interaction on the structure The properties of springs are calculated from different standard penetration test (SPT) values, Poisson’s ratio and elasticity of soil along the depth of the soil. Entire soil-foundation-structure system is modelled and analyzed using spring approach. Static analysis, response spectrum analysis and pushover analysis (PA) are done in order to find the variations in natural periods, base shears and deflections of the structures by incorporating soil flexibility as compared to structures with conventional fixed base. Pushover analysis is done to evaluate the performance of the structure when modelled in fixed base and spring base system.

scholarly journals Numerical analysis of shear interaction of an underground structure with soil

2021 ◽  
Vol 2131 (3) ◽  
pp. 032093
Author(s):  
B B Rikhsieva ◽  
B E Khusanov
Keyword(s):  
Soil Structure ◽  
Underground Structure ◽  
Soil Layer ◽  
Complex Interaction ◽  
Soil Structure Interaction ◽  
Contact Boundary ◽  
Structural Failure ◽  
Main Attention ◽  
Structure Interaction ◽  
The Finite Difference Method

Abstract A soil layer behaviour under the shear interaction of an underground structure with soil is studied. Structural failure is considered under conditions of strained soil, and complete cohesion is assumed at the underground structure-soil contact boundary. The Finite Difference Method is used to numerically investigate the process of the structure-soil shear interaction under consideration. The main attention is paid to the adequacy of the conditions of soil-structure interaction, and to the strain state of the near-contact soil layer around the underground structure. The results are plotted and analysed. From the results obtained, the existence of a near-contact soil layer is shown; the use of the condition of complete cohesion is justified considering the structural failure of soil under conditions of complex interaction; the possibility to determine the thickness of the near-contact soil layer and of the layers with the respective degrees of structural failure is shown.

About Contemporary Seismic Analysis of Underground Structures

2018 ◽  
Vol 931 ◽  
pp. 91-99
Author(s):  
Alexander M. Belostotskiy ◽  
Pavel A. Akimov ◽  
Dmitry S. Dmitriev
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Soil Structure ◽  
Seismic Analysis ◽  
Underground Structure ◽  
Soil Structure Interaction ◽  
Underground Structures ◽  
Structure Interaction ◽  
Second Stage ◽  
Element Method

This paper is devoted to actual problems of seismic analysis of underground structures. Brief classification and overview of corresponding methods of analysis (force-based methods, displacement-based methods, numerical methods of seismic analysis of coupled system “soil – underground structure” and approaches to problems of soil-structure interaction) is presented. Special static finite element method with substructure technique for seismic analysis of underground structures is described. Dynamic soil-structure interaction system can be decomposed into three sub-structures: structure, near-field and far-field soil. The first stage of static finite element method is solving the free field shear stress, acceleration, velocity and displacement, when the moment that the relative displacement of the soil that the underground structure located in reaches the maximum. The second stage is computing of internal forces and parameters of boundary conditions. The third stage is construction of the static finite element model and imposing the loads and constrains computed at the second stage and then making a static analysis.

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