Optimal Control of Structures under Earthquakes Including Soil-Structure Interaction

Özuygur, Ali Ruzi; Gündüz, A. Necmettin

doi:10.1080/13632469.2016.1277567

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…As summarized, the extant studies corresponding to inerter-based structures were performed based on the assumption of a fixed-base condition, i.e., the impact of the SSI on the seismic performance and vibration mitigation effect of inerter-based structures was neglected. However, the arbitrary assumption of the fixed-base support is valid only for the case of a structure standing on rock or soil with high stiffness [24]. As for the soft soil condition, the interaction between soil and structure results in a decrease of the fundamental frequency and a modification of the energy dissipation mechanism [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Interaction of Two Adjacent Structures Coupled by Inerter-based System considering Soil Conditions

Zhao

Chen

Zhang

et al. 2020

Journal of Earthquake Engineering

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The inerter-based systems have proven to be effective for vibration control of adjacent structures. The interaction through the soil medium between adjacent structures in urban areas is generally accepted. However, existing studies concerning the inerter-based adjacent structures are primarily based on the assumption of a fixed base, without considering the inevitable interaction. To address this issue, this study incorporated the soil effects into the theoretical analysis of adjacent structures interconnected by an inerter system, and correspondingly develops an optimal design framework for such system. Employing a classic discrete model for structures and soil, the interaction behavior between inerter-based adjacent structures and soil was extensively studied in a comparative analysis. Based on the revealed interaction phenomena, the need for considering the soil condition in the design of an inerter system for adjacent structures was addressed, and a performance-demand-based optimal design framework was developed. The results indicated that for inerter-based adjacent structures spaced closely, the coupled interaction effect of soil and structure requires careful consideration, especially in soft soil conditions. Owing to the soil effects, the inerter system exhibited a weakened effectiveness for displacement reduction. A larger inner deformation of the inerter system is required to meet the demand for energy dissipation. With consideration of the soil condition, the proposed design method can satisfy the pre-specified target displacement demands for adjacent structures, simultaneously optimizing the control cost as an economical solution.

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Section: Introductionmentioning

confidence: 99%

Interaction of Two Adjacent Structures Coupled by Inerter-based System considering Soil Conditions

Zhao

Chen

Zhang

et al. 2020

Journal of Earthquake Engineering

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“…Luco (1998) and Ghosh and Basu (2005) using impedance functions that consider the three systems (soil-structure-damper), analyzed these effects. After studies such as these, in which the influence of SSI on vibration control is evidenced, Mousavi et al (2013), Farshidianfar and Soheili (2013), and Ozuygur and Gunduz (2018) applied optimization methods to define optimal parameters for the passive device connected to a structure subject to seismic action and under the influence of site conditions. Moreover, Jabary and Madabhushi (2018), through experimental analysis of multiple TMDs, evaluated their performance for the dynamic response.…”

Section: Introductionmentioning

confidence: 99%

Effects of soil-structure interaction in seismic analysis of buildings with multiple pressurized tuned liquid column dampers

Mendes

Ribeiro

Pedroso

2019

Lat. Am. j. solids struct.

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In this paper soil-structure interaction (SSI) effects are investigated while an array of Pressurized Tuned Liquid Column Dampers (PTLCD) is employed for seismic vibration control of buildings. This device represents the most general case of a passive damper, with different reduction options to other control devices obtained by simplifying the involved parameters. Soil conditions considerably affect the control device functioning, because dynamic parameters such as natural frequency, damping factor, and natural modes depend on the soil properties. A simplified mathematical model is developed for the building with multiple degrees of freedom connected to a flexible base. For the time-domain analysis, a computational routine is developed for the linearization of the equilibrium equations of the PTLCD, as well as details for the reduction to the other types of passive dampers. Several numerical examples are selected for the analysis of the damper efficiency in reducing seismic vibration considering SSI. These simulations include Kobe earthquake data, which is applied to the model to evaluate the device performance under different scenarios. It is verified the influence of SSI in the natural frequency and structural response, which is related to the earthquake frequency components. Results confirm that the array of PTLCD's can reduce the vibration amplitudes, being more effective for soils with higher stiffness values.

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Seismic control performance indices for magneto-rheological dampers considering simple soil-structure interaction

Yanik

2020

Soil Dynamics and Earthquake Engineering

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Optimal Control of Structures under Earthquakes Including Soil-Structure Interaction

Cited by 4 publications

References 16 publications

Interaction of Two Adjacent Structures Coupled by Inerter-based System considering Soil Conditions

Interaction of Two Adjacent Structures Coupled by Inerter-based System considering Soil Conditions

Effects of soil-structure interaction in seismic analysis of buildings with multiple pressurized tuned liquid column dampers

Seismic control performance indices for magneto-rheological dampers considering simple soil-structure interaction

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