scholarly journals Vibration Analysis of Frame Structure with Soil-Structure Interaction

2015 ◽  
Vol 4 (5) ◽  
Author(s):  
Rafi Mohammed Qasim
Keyword(s):  
Vibration Analysis ◽  
Soil Structure ◽  
Frame Structure ◽  
Soil Structure Interaction ◽  
Structure Interaction

scholarly journals Progressive Collapse Assessment of Reinforced Concrete Frame Structure with and without Considering Actual Soil Condition

10.29007/p792 ◽  
2018 ◽  
Author(s):  
Bhavik Patel ◽  
Bharat Shah
Keyword(s):  
Reinforced Concrete ◽  
Soil Structure ◽  
Progressive Collapse ◽  
Frame Structure ◽  
Nonlinear Static Analysis ◽  
Soil Structure Interaction ◽  
Reinforced Concrete Frame ◽  
Structure Interaction ◽  
Concrete Frame ◽  
Collapse Assessment

It has been found that the forces in the members of frame structures considering soil-structureinteraction, differs than conventional method of analysis. Analysis considering soil-structure interaction is time-consuming process; hence, if the relation between two methods established, then by using conventional method, realistic results can be obtained. In the present work, effort has been made to study the impact of soil-structure interaction on the progressive collapse assessment of reinforced concrete frame structure (building). It is clear that the differential settlement of the foundation changes the load transfer system of the super structure. Differential settlement depends on the properties of the soil below foundation and the stiffness of the super structure. The objective of this study is to quantify the change in the reaction at the foundation level due to soil structure interaction. To achieve this target, the Winkler approach is used. In this model, soil below foundation is modelled as idealized springs. To study the effect of failure of load carrying elements i.e. columns on the entire structure; 15 storey moment resistant RC buildings is considered. The building is modelled and analyzed for progressive collapse using the structural analysis and design software SAP2000. Nonlinear static analysis is performed to understand the progressive collapse phenomena. The nonlinear static analysis is found to be the most efficient method for progressive collapse assessment of the reinforced concrete structure with consideration of soil effect. General Service Administration (GSA 2003) guideline is used for loading and procedure to assess the potential towards progressive collapse of structure.

Study on Seismic Response Characteristics of Step-Terrace Frame Structure on the Slope

2014 ◽  
Vol 580-583 ◽  
pp. 1718-1722
Author(s):  
Li Ping Liu ◽  
Ji Jin Liu ◽  
An Liang Li ◽  
Ming Zi Tan
Keyword(s):  
Seismic Response ◽  
Soil Structure ◽  
Time History ◽  
Frame Structure ◽  
Soil Structure Interaction ◽  
Soil Parameters ◽  
Structure Interaction ◽  
Response Characteristics ◽  
History Analysis ◽  
Dynamic Time

The seismic response of step-terrace frame structure is affected by the slope. Considered soil parameters of slope, the floor numbers and span numbers of layers below the scarp, 45 step-terrace frame example structures were designed, and three excitations at bedrock were selected to analyze the example structures response with dynamic time-history analysis method. The research indicates that when the other conditions are the same, the soil becomes softer, or structure's span numbers on the slope becomes larger or the slope becomes higher, the dynamic interaction between slope and step-terrace frame structure becomes more obvious. When the inputted ground motion at slope foot is adopted and the slope soil is soft, the seismic response of structure without soil-structure interaction is smaller than that of with soil-structure interaction.

The Stochastic Seismic Response Analysis on Nonlinear Pile-Soil-Structure Interaction System with Uncertain Parameters

2011 ◽  
Vol 243-249 ◽  
pp. 3940-3944
Author(s):  
Ai Hong Zhou ◽  
Ying Yuan ◽  
Ji Hua Chen
Keyword(s):  
Seismic Response ◽  
Vibration Analysis ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Equivalent Linearization ◽  
Uncertain Parameters ◽  
Structure Interaction ◽  
Material Parameters ◽  
Interaction System ◽  
Stochastic Seismic Response

In order to solve the problem of the analysis of seismic response for nonlinear pile-soil-structure interaction system with uncertain parameters subjected to stochastic external excitation, a simple and practical method was proposed in this paper, and the corresponding plug-in program was developed on the platform of universal software ANSYS. Firstly, the stochastic vibration analysis was converted into the definite harmonic vibration analysis accurately by means of the pseudo-excitation method. Secondly, perturbation theory of small parameter was introduced to consider the uncertain material parameters and direct interpolation equivalent linearization model was used to simulate the nonlinearity of material. Finally, the effects of the variability of shear modulus, damping ratio, density and Poisson’s ratio on the stochastic seismic response of the pile-soil-structure interaction system are studied. The results show that the variability coefficients of the response have the same magnitude as the input material parameters and the influence of the variability of material parameters on the response magnitude can’t be ignored.

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