scholarly journals Seismic Behaviour of High-rise Frame-core Tube Structures Considering Dynamic Soil-Structure Interaction

2022 ◽  
Author(s):  
Xiaofeng Zhang ◽  
Harry Far
Keyword(s):  
Soil Structure ◽  
Design Method ◽  
Lateral Displacement ◽  
Building Design ◽  
Soil Structure Interaction ◽  
Seismic Behaviour ◽  
Earthquake Excitation ◽  
Core Tube ◽  
Structure Interaction ◽  
High Rise

Abstract As the population grows and land prices rise, high-rise buildings are becoming more and more common and popular in urban cities. Traditional high-rise building design method generally assumes the structure is fixed at the base, because the influence of soil-structure interaction is considered to be beneficial to the response of structures under the earthquake excitation. However, recent earthquakes and studies indicated that SSI may exert detrimental effects on commonly used structural systems. In this study, a numerical soil-structure model is established in Abaqus software to explore the impacts of SSI on high-rise frame-core tube structures. The seismic response of frame-core tube structures with various structural heights, height-width ratios, foundation types and soil types is studied. The numerical simulation results including maximum lateral deflections, foundation rocking, inter-storey drifts and base shears of rigid and flexible base buildings are discussed and compared. The results reveal the lateral displacement and inter-storey drifts of the superstructure can be amplified when SSI is taking into account, while the base shears are not necessarily reduced. Increasing the stiffness of the foundation and the subsoil can generally increase the seismic demand of structures. It has been concluded that it is neither safe nor economical to consider only the beneficial effects of SSI or to ignore them in structural design practice.

scholarly journals Effect of Soil Structure Interaction on Seismic Behaviour of Pile Supported Frame Buildings

2021 ◽  
pp. 853-859
Author(s):  
Karan Chejara ◽  
Dr. A. K. Verma ◽  
Dr. V. A. Arekar
Keyword(s):  
Seismic Response ◽  
Soil Structure ◽  
Numerical Study ◽  
Elastic Half Space ◽  
Soil Structure Interaction ◽  
Seismic Behaviour ◽  
Structure Interaction ◽  
High Rise ◽  
Fixed Base ◽  
Structure Height

Experiences from past earthquake disasters clearly shows that the ground motion was highly responsible for majority of property and life loss. Excessive damage was occurred to pile supported bridges, towers, chimneys, high rise structures, etc among the collapsed structures. A numerical study is carried out to understand the dynamic soil structure interaction of a high rise structure in a visco elastic half space in the presence of nearby pile supported structures. For understanding the seismic response of group of high rise structures supported on pile foundations a two dimensional study is carried. Framed structures which are assumed from the linear structures of different dynamic characteristics are supported on group of piles. Some studies related to group effect of structures supported on piles are considered like group of two identical structures, group of three identical structures and group of three different structures, secondly the effect of variability in structure height is considered like 5 storey structure, 10 storey structure and 15 storey structure and the third one in which the effect of variability in structure shape is considered. Above all case the effect of structure soil structure interaction on seismic response is compared with fixed base response.

Pushover Analysis of Buildings Considering Soil-Structure Interaction

2016 ◽  
Vol 857 ◽  
pp. 189-194 ◽  
Author(s):  
P.V. Joy ◽  
Bennet Kuriakose ◽  
Mini Mathew
Keyword(s):  
Seismic Design ◽  
Soil Structure ◽  
Pushover Analysis ◽  
Design Procedure ◽  
Structural Response ◽  
Soil Structure Interaction ◽  
Seismic Behaviour ◽  
Earthquake Excitation ◽  
Structure Interaction ◽  
Performance Based Seismic Design

Structural vulnerability of buildings to damage needs to be identified during the time of earthquake for reliable seismic design. Conventional linear elastic design methods cease to predict seismic damages in buildings. Pushover analysis is a popular displacement-based nonlinear structural analysis procedure employed to predict the seismic behaviour of structures. Generally, buildings are designed based on the assumption that they are fixed at their base, without considering the foundation as well as soil. But in reality, when a structure is subjected to an earthquake excitation, it interacts with the soil, influencing the structural response. In this study, a multi-bay building with different heights are modelled and analysed, duly considering Soil-Structure Interaction (SSI). The study can form foundation for rigorous performance-based seismic design procedure, considering the effect of soil beneath the structure.

Analysis of Asymmetric High-Rise Building

2017 ◽  
Vol 738 ◽  
pp. 120-129
Author(s):  
Olga Ivankova ◽  
Marian Stellmach ◽  
Lenka Konecna
Keyword(s):  
Dynamic Analysis ◽  
Soil Structure ◽  
Applied Load ◽  
Soil Structure Interaction ◽  
Static And Dynamic Analysis ◽  
Structure Interaction ◽  
High Rise ◽  
High Rise Building ◽  
Seismic Area ◽  
Two Alternatives

This paper deals with static and dynamic analysis of asymmetric high-rise building. Two alternatives have been analysed – without dilatation and with dilatation. Then, the influence of the dilatation was discussed. The building was located in 4th seismic area in Slovakia (Bratislava). The description of the building, applied load, considered soil-structure interaction, created calculating models, used analysis and obtained results are mentioned here. The conclusions and the photos of defective repairs of real structures are depicted at the end of the paper.

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