scholarly journals Seismic damage assessment of a historical masonry minaret considering soil-structure interaction

2021 ◽  
Vol 4 (3) ◽  
pp. 196-212
Author(s):  
Taha Yasin Altıok ◽  
Ali Demir
Keyword(s):  
Finite Element ◽  
Interaction Effect ◽  
Soil Structure ◽  
Soft Soil ◽  
Soil Structure Interaction ◽  
Structural Behaviour ◽  
Damage Distribution ◽  
Soil Medium ◽  
Structure Interaction ◽  
Historical Masonry

Historical structures should be carefully preserved and transferred to the next generations. Therefore, their seismic performances should be investigated in detail. In the finite element method, many parameters affect the seismic behaviour and damage distribution in the structures. One of the most significant parameters is the Soil-Structure Interaction effect. In finite element analyses, the soil medium is generally neglected, and the structures' base is restrained by fixed supports. In this study, seismic response of a historical masonry minaret is investigated by considering the Soil-Structure Interaction and Operational Modal Analysis methods. To determine the effect of Soil-Structure Interaction on structural behaviour, the fixed supports, hard and soft soil mediums at the base of the structure are modelled. The material and failure behaviours are defined with the Concrete Damage Plasticity model. Displacements, principal stresses, damage rates, and damage distribution of models are obtained with nonlinear time history analyses. According to the results, the interstory drift increases due to the decrease in the stiffness of the soil media. In addition, the fixed supports model was damaged more tensile stress damage than the other models. The least occurred in the soft soil model. It is concluded that the Soil-Structure Interaction effect significantly affects structural behaviour, especially the damage rate and distribution.

FINITE ELEMENT MODELLING OF SOIL-STRUCTURE INTERACTION

2015 ◽  
Vol 76 (8) ◽  
Author(s):  
Thevaneyan K. David ◽  
Renga Rao Krishnamoorthy ◽  
Mohamed Jais I. B.
Keyword(s):  
Finite Element ◽  
Constitutive Model ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Background Information ◽  
Structural Behaviour ◽  
Structural Element ◽  
Element Analysis ◽  
Soil Medium ◽  
Structure Interaction

This paper presents background information relevant to the modelling of soil-structure interaction. The interaction between the structural element (i.e. pile foundation or abutments) and the soil medium is believed to have the potential to alter considerably the actual behaviour of any structure. Modelling of the structural element is rather simple and straightforward when compared to modelling the structure in interaction with soil. It is known that the structural analysis simplifies soil behaviour, while geotechnical analysis simplifies structural behaviour. The choice of an appropriate soil constitutive model may have significant influence on the accuracy of soil-structure interaction analyses. A 2D finite element analysis on a pile-cap-pile-soil model replicating actual field work was performed in this paper using OASYS SAFE to further substantiate the choice of an appropriate soil constitutive model for the purpose of soil-structure interaction modelling.

scholarly journals Comparison of Seismic isolation with isolator and Soil structure Interaction U-shaped metallic isolator and Soil structure Interaction

2020 ◽  
Vol 184 ◽  
pp. 01097
Author(s):  
G. Jyothi Sravya ◽  
A. Manchalwar
Keyword(s):  
Earthquake Engineering ◽  
Soil Structure ◽  
Seismic Isolation ◽  
Soft Soil ◽  
Structural Response ◽  
Soil Structure Interaction ◽  
Soil Medium ◽  
Structure Interaction ◽  
Steel Damper ◽  
The Impact

Soil condition is an important research area in earthquake engineering. In this work we evaluated the impact of soil-structure interaction (SSI) and U-shaped steel damper on the isolated response of the building base. Different soils for a seismic performance of multistory buildings are systematically compared and discussed. The soil’s physical state is divided into; hard soil, medium soil, and soft soil. It was compared with the U-shaped steel damper and there is noticeable difference between them. This study concludes that the use of steel damper shaped and SSI has been effective in minimizing structural response. It was observed that interaction of the soil structure provides some flexibility to the structure by increasing the structure’s displacements. Modeling base isolation along with consideration of soil structure interaction therefore leads to better structural response prediction.

scholarly journals Numerical modelling in seismic analysis of tunnels regarding soil-structure interaction

2013 ◽  
Vol 11 (3) ◽  
pp. 251-267
Author(s):  
Elefterija Zlatanovic ◽  
Gordana Broceta ◽  
Natasa Popovic-Miletic
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Soil Structure ◽  
Seismic Analysis ◽  
Realistic Model ◽  
Theory Of Elasticity ◽  
Soil Structure Interaction ◽  
Soil Medium ◽  
Structure Interaction ◽  
Element Method

The paper is related to the most significant aspects of numerical simulations in seismic analysis of tunnels, highlighting the soil-structure interaction phenomenon. The modelling of a problem and analysis of relevant influences may be completed by an application of software packages based on the finite element method. In order to define a reliable and efficient numerical model, that should simultaneously put together both the criteria of simplicity and realistic presentation of a physical problem, analyses should start from the most simple modelling techniques (theory of elasticity, replacing the soil medium with elastic springs, pseudo-static analysis), with the final goal to accomplish a more complex and realistic model (theory of elasto-plasticity, finite element method, full dynamic analysis).

Assessment of Reinforced Concrete Building with Soil Structure Interaction Effect under Vertical Earthquake

2016 ◽  
Vol 857 ◽  
pp. 331-336 ◽  
Author(s):  
Siti Marissa Abd Rahim ◽  
Mohd Zulham Affandi Mohd Zahid ◽  
Wan Mohd Sabki Wan Omar ◽  
Mohd Asri bin Ab Rahim ◽  
Ade Faisal
Keyword(s):  
Reinforced Concrete ◽  
Interaction Effect ◽  
Soil Structure ◽  
Seismic Analysis ◽  
Soil Structure Interaction ◽  
Actual Condition ◽  
Ground Acceleration ◽  
Beneficial Result ◽  
Soil Medium ◽  
Structure Interaction

In past investigation, most of studies on seismic analysis for soil structure interaction effect are small and generally design building were considered to be fixed at their support. In actual condition, flexibility of the bases soil medium were generate some deformation in foundation element and will be shows detrimental effects on the system behavior. This can make a beneficial result on the overall structure response if flexible bases were considered during seismic analysis. The present study attempts to compare the behavior of reinforced concrete medium rise building with soil structure interaction effect and fixed bases under vertical earthquake. The eight-storey irregular 2D frame models were subjected to ground motion from 4 stations with peak ground acceleration ratios vertical to horizontal (V/H) between ranges 0.95 to 1.16. During simulation of simplified model, Impedance Function has been applied to calculate the stiffness of such spring. The structural response quantities were considered displacement histories and axial load variation. The result shows that the consideration of soil structure interaction effect may increase such response behavior.

scholarly journals System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, Greece

Geosciences ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 275
Author(s):  
Anna Karatzetzou ◽  
Dimitris Pitilakis ◽  
Stella Karafagka
Keyword(s):  
Finite Element ◽  
System Identification ◽  
Soil Structure ◽  
Numerical Models ◽  
Soft Soil ◽  
Three Dimensions ◽  
Soil Structure Interaction ◽  
Mode Shapes ◽  
Structure Interaction ◽  
Significant Difference

The present study focuses on the dynamic system identification of the Suleiman Mosque minaret in the medieval city of Rhodes, Greece. Suleiman Mosque was built in 1522 at the site of the destroyed Christian Church of the Apostles. First, we performed sets of ambient vibration measurements at the minaret of the monument. Based on these data, we calculated the eigenproperties of the minaret. Next, we modeled the monument in three dimensions, using the finite element method. Six numerical models were considered. Model Ι is the simplest one (isolated, fixed base minaret). Model VI is the most complicated one (simulation of the whole mosque also considering soil–structure interaction and foundation flexibility). The calculated predominant periods and mode shapes of Models I–VI are validated against the microtremor field measurements, recorded on the minaret’s two floors and ground level. We elaborate on the reliability of finite element models for earthquake response evaluation, considering soil–structure interaction and foundation flexibility on the mode shape eigenfrequencies. Additionally, we discuss the seismic response of the minaret compared to the whole monument. We observed no significant difference in the first two modes of response, implying that the minaret’s dynamic behavior is slightly affected by the entire mosque’s presence.

Seismic Response Analysis of Soil-Structure Interaction on Base Isolation Structure

2013 ◽  
Vol 663 ◽  
pp. 87-91
Author(s):  
Ying Bo Pang
Keyword(s):  
Finite Element ◽  
Seismic Response ◽  
Soil Structure ◽  
Base Isolation ◽  
Soil Structure Interaction ◽  
Response Analysis ◽  
Analysis Model ◽  
Seismic Response Analysis ◽  
Structure Interaction ◽  
Calculation Results

As an effective way of passive damping, isolation technology has been widely used in all types of building structures. Currently, for its theoretical analysis, it usually follows the rigid foundation assumption and ignores soil-structure interaction, which results in calculation results distortion in conducting seismic response analysis. In this paper, three-dimensional finite element method is used to establish finite element analysis model of large chassis single-tower base isolation structure which considers and do not consider soil-structure interaction. The calculation results show that: after considering soil-structure interaction, the dynamic characteristics of the isolation structure, and seismic response are subject to varying degrees of impact.

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