Study the seismic response of reinforced concrete high-rise building with dual framed-shear wall system considering the effect of soil structure interaction

Agha, Wesam Al; Umamaheswari, N.; Al-Helwani, Amjad

doi:10.1016/j.matpr.2020.12.111

Cited by 16 publications

(4 citation statements)

References 7 publications

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“…Simultaneously, the soil bears the vibrations induced by the building and transmits them back into the depths of the soil. This dynamic exchange between the structure and the supporting soil underscores the importance of considering their inter-play in the design process [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

Bozdogan,

Keskin

2024

Buildings

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In shear wall-frame systems, the foundation rotation that may occur under the shear walls changes the displacements and interstory drift ratios and changes the internal force distribution. This study investigates the effect of foundation rotations under shear walls on internal force distribution in shear-frame systems. The originality of the study lies in considering parabolic loads and dynamic analysis (first mode), in addition to static uniform or triangular distributed loads, when determining the shear wall moment contribution ratio under the influence of foundation rotation. The shear wall contribution ratio, a key parameter in many earthquake codes, is defined as the ratio of the sum of bending moments taken by the shear walls at the base to the overturning moment. It plays a crucial role in determining the building’s behavior. Depending on this ratio, the load-reduction coefficient is changed. This study investigates the effect of foundation rotation on the moment distribution at the base for three different static load cases and the first mode in the dynamic analysis. The multi-story building is modeled as an equivalent sandwich beam. The moment contribution ratio (MCR) was calculated with the help of analytical solutions of the differential equations written for three different load cases in static conditions, and graphs were created for practical use directly calculating the MCR. In the methodology of the study, the initial step involves the calculation of the equivalent sandwich beam stiffness parameters and the foundational rotational spring. Subsequent to these calculations, the MCR values can be directly obtained with the help of graphs. This approach facilitates the rapid and practical determination of the MCR and can be used in the preliminary sizing phase to eliminate possible errors in the data entry of software that performs detailed analysis. In addition, in the presented study, it has been shown that taking a single mode into account is sufficient when calculating MCR values in dynamic analysis.

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Section: Introductionmentioning

confidence: 99%

A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

Bozdogan,

Keskin

2024

Buildings

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“…High-rise buildings of various structural systems are becoming more and more popular and common in urban cities due to population growth, land prices increase and lack of construction land (Al Agha et al 2021). Therefore, it has been tried to make high-rise buildings safe and stable under different loads, especially when buildings are built on a site with poor geotechnical conditions in an earthquake-prone area.…”

Section: Introductionmentioning

confidence: 99%

“…Secondly, the seismic response of the superstructure will probably cause deformation of the ground soil, which further modi es the input motion (Wolf and Deeks 2004). Therefore, the seismic behaviour of the superstructure is in uenced by the interaction between the superstructure and the underneath soil and a feedback loop will exist (Tabatabaiefar et al 2013;Tabatabaiefar 2016;Far 2019a;Al Agha et al 2021;). This feedback loop, in which the response of the soil affects structural behaviour and vice-versa is termed as soil-structure interaction (SSI) (Anand and Satish Kumar 2018).…”

Section: Introductionmentioning

confidence: 99%

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

Xiao-feng

Far

2022

Preprint

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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.

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“…Shi et al [8] and Yu and Yuan [9], respectively, adopted the response displacement method to discuss the applicability of the seismic analysis of underground integrated pipe corridor and complex underground large space structure, as well as the selection of foundation spring stiffness and the simulation method. Al Agha et al [10] used ABAQUS to create soil media and used the El Centro acceleration time-history record input by seismic load to analyze the difference of the influence of buildings on soft soil and hard soil in strong earthquakes, and the research results have good engineering guiding significance.…”

Section: Introductionmentioning

confidence: 99%

Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station

Zeng

Shuanhai

Yin

2021

Advances in Civil Engineering

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China Earthquake Parameter Zoning (2016) has increased the seismic fortification intensity in Chengdu from VII to VIII. It is necessary to conduct in-depth discussion on the impact of the seismic performance of the built underground station structure. In this paper, a stratum-structure finite element model is established with a Chengdu subway station as an example. The model boundary adopts viscoelastic boundary, and the ground motion is input in the form of equivalent nodal force. The equivalent linearization method is used to consider the nonlinearity of soil materials. The time-history analysis of seismic fortification intensity of VII and VIII degrees is carried out, respectively. By comparing the calculation results of the two seismic fortification intensity ground motion conditions, it is concluded that the connection between the side wall and the floor is the weakest position of the station structure under the action of the earthquake; the seismic fortification intensity is increased from VII to VIII to the internal force of the structure. It has a relatively large impact, especially the most obvious impact on the bending moment. The results of the verification of the seismic time-history analysis show that the increase of fortification intensity will have a more obvious impact on the structural deformation, and the structural design of the station can meet the safety performance requirements of VII and VIII degrees of seismic fortification. The research has certain reference significance for the seismic safety evaluation of the built underground station structure in Chengdu area.

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Study the seismic response of reinforced concrete high-rise building with dual framed-shear wall system considering the effect of soil structure interaction

Cited by 16 publications

References 7 publications

A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

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

Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station

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