Seismic Evaluation of Mixed Steel and RC Columns in Hybrid High-Rise Buildings

Kontoni, D.P.N.; Farghaly, Ahmed Abdelraheem

doi:10.2478/ace-2019-0015

Cited by 6 publications

(6 citation statements)

References 13 publications

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“…In this study, based on the second (Buckingham) law of similarity, the similarity relationship of various physical quantities is determined by dimensional analysis, with the basic controllable similarity constants; the similarity relationship of other physical quantities can be calculated by dimensional analysis [ 26 , 27 ]. According to the calculation results, the model structure is an under-artificial mass model.…”

Section: Model Soil and Soil Box Productionmentioning

confidence: 99%

Seismic performance of soft soil foundation with a new type of assembled wall tuned mass damper

Jiang,

Yin,

Yin

et al. 2024

PLoS ONE

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The design of tuned mass damper (TMD) parameters is influenced by the soil-structure-TMD coupling system; thus, it is important to consider the soil-structure interaction (SSI) for the vibration control effect of the TMD. Recently, the acquisition of TMD parameters considering soil-structure interactions has only remained at the theoretical stage, lacking relevant experimental verification. Traditional TMD face the problems of occupying a large building space, increasing construction costs, and non-replaceable components. In this study, an assembled wall-type damping TMD was designed. By comparing the dynamic response of the uncontrolled and controlled structures equipped with the newly assembled wall-type damping TMD in the shaking table test on a soft soil foundation, we analyzed whether the SSI effect was considered in the TMD design parameters on the damping effect of the newly assembled wall-type tuned mass damper. The TMD parameters optimized using the artificial intelligence algorithm were verified experimentally. The results indicated that the traditional TMD design parameters were discordant because the SSI effect was not considered. The SSI effect in the soil effectively reduces the dynamic response of the superstructure. By considering the SSI effect and improving the multi-population genetic algorithm, a wall-type damping TMD with optimized parameters can achieve a good damping effect.

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Section: Model Soil and Soil Box Productionmentioning

confidence: 99%

Seismic performance of soft soil foundation with a new type of assembled wall tuned mass damper

Jiang,

Yin,

Yin

et al. 2024

PLoS ONE

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“…Kontoni, D.P.N. and Farghaly, A.A., 2023 (2023) [1] This study compares the results with the bracing approach to see if the implemented method improved the HRB's seismic performance. The tuned mass damper (TMD) was used as a method to attenuate the seismic response of the HRB, taking SSI into account.…”

Section: Literaturereviewmentioning

confidence: 99%

A Review Study on Composite +8 Structure with Application of Damper on Different Locations Using Time History Analysis

Khandare

2024

IJSREM

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These viscous dampers are unique in that the velocity can be directly correlated with the damping properties and, consequently, the quantity of energy dissipated. Because of the activity of seismic dangers, the viscous damper's response is thought to be out of phase with those. This is due to the fact that the damping device's damping forces changes inversely with a tall building's dynamic lateral displacements. For a clearer understanding, picture a building that is trembling laterally during an earthquake. When the building's deflection is at its highest, the stress in lateral load-resisting components like frame columns reach its maximum. When a fluid viscous damper reaches its maximum deflection, its damping force will be zero, which will cause the damper stroking velocity to zero when the building reverses direction. When the building returns to its natural upright position, maximum damper force will be experienced at maximum velocity while moving in the opposite direction. At this stage, the lateral load-resisting elements' stresses are at their lowest. As a result, when the building travels from its resting position to its maximum lateral deflection position, the damping supplied by the device changes from maximum to minimum. Examine a few research studies to learn more about working on FVD. The authors of this paper examine FVD, its use, and its impact in various scenarios. Keywords:FluidViscousDamper,ETABS,EarthquakeLoad,andOptimizeLocationetc.

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“…The structural integrity of modular buildings is heavily dependent on the mechanical performance of joints, encompassing both intra-and inter-connections. These joints serve as crucial pathways to transfer both gravity and lateral loads within the building system (Farajian et Kontoni & Farghaly, 2023, 2024. The incorporation of interconnections introduces a modi cation in the boundary conditions at the ends of both columns.…”

Section: Introductionmentioning

confidence: 99%

The effect of inter-connection properties on the lateral behaviour of moment-frame modular steel structures

Farajian,

Khodakarami,

Kontoni

et al. 2024

Asian J Civ Eng

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Recently, there has been a push for the adoption of pre-fabricated modular units in constructing low to high-rise buildings mainly due to the reduction of material waste and construction time. These units are manufactured in a factory and then transported to the construction site for assembly through inter-connections to create a building block.The unique nature of these inter-connections is crucial for the structural performance of modular buildings as they provide modular structure integrity. Despite the growing popularity of modular construction, there is a limited number of published studies examining how inter-connection mechanical characteristics in uence the lateral performance of moment-frame modular structures. The stiffness of inter-connections plays a crucial role in determining the overall rigidity of these structures, indicating the importance of studying their impact on the seismic performance of momentframe modular buildings. The objective of this study is to investigate the impact of inter-connection mechanical characteristics on the lateral performance of moment-frame modular buildings using nonlinear static analysis. For this purpose, three frames with four, eight, and twelve storeys are assumed for analysis. Various inter-connections with different stiffness properties are considered in the nonlinear static analysis. Three performance levels are taken into account, and the responses of the structures at these levels are assessed and compared based on different interconnection mechanical properties. The ndings suggest that a decrease in inter-connections' stiffness results in a reduction of lateral capacity up to around 32.98% for the structural base shear.

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Seismic Evaluation of Mixed Steel and RC Columns in Hybrid High-Rise Buildings

Cited by 6 publications

References 13 publications

Seismic performance of soft soil foundation with a new type of assembled wall tuned mass damper

Seismic performance of soft soil foundation with a new type of assembled wall tuned mass damper

A Review Study on Composite +8 Structure with Application of Damper on Different Locations Using Time History Analysis

The effect of inter-connection properties on the lateral behaviour of moment-frame modular steel structures

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