Alternative instrumentation schemes for the structural identification of the reinforced concrete field test structure by ambient vibration measurements

Kutanis, Mustafa; Boru, Elif; Işık, Ercan

doi:10.1007/s12205-016-0758-0

Cited by 15 publications

(8 citation statements)

References 4 publications

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“…The section can be symbolized with material sectional properties such as torsional constant, moment of inertia, modulus of elasticity and modulus of stiffness. Eigenvalue analysis was used to obtain the period, frequency, participation modal factors, effective modal masses and their percentage values related to the structure [18][19][20]. Another analysis used for all steel structure models selected within the scope of the study was pushover analysis.…”

Section: Methodsmentioning

confidence: 99%

The mutual interaction between the structural footprint and number of floors in steel structures

Işık¹,

Karaşin²

2020

Res. Eng. Struct. Mater.

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Structural dimensions and number of floors are some of the factors affecting the building behaviour under the earthquake effects. In this study, the structural footprint and the number of floors were selected as a variable. For this purpose, a steel structure model with fixed dimensions and properties of load-bearing system elements was selected. The structural footprint was selected as the first variable and then five different structure models were created. The structural footprint was changed by setting each axial clearance in both directions. Each axial clearance was increased by 0.5m in each structure model. Three different number of floors as to be 5, 6 and 7 floors were selected as the second variable. Eigenvalue and pushover analyses were performed for each model and each number of floors. As a result of the analyses, the target displacement values for period, frequency, cumulative participation mass ratio, base shear force, settlement, stiffness and degree of damage were acquired separately. As the structural footprint and number of the floors increase, while the period, settlement and the target displacement values increased, on the contrary, there was a decrease in participation mass ratio, base shear forces and stiffness values. In the study, cost comparisons of building construction were also made considering the change in the total structural area and the number of floors. The criterion of safety and economy was ignored due to increase both in the number of floors and the footprint. This study emphasizes the importance of avoiding the unnecessary structural dimensions via optimum design principles. As structural footprint area and number of floors increase, period values increase, stiffness and seismic capacity values decrease. As the number of floors and footprint area increases, the total building area increases, so the approximate building cost has also increased.

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Section: Methodsmentioning

confidence: 99%

The mutual interaction between the structural footprint and number of floors in steel structures

Işık¹,

Karaşin²

2020

Res. Eng. Struct. Mater.

Self Cite

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“…Briefly, it can be evaluated as pure elastic structural analysis. Structure-related modal period, frequency, modal participation factors, effective modal masses and their percentile values can be reached by eigen value analysis (Antoniou and Pinho, 2003;Seismossoft, 2014;Kutanis et al, 2017;Nikoo et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

The effects of changing story number and structural footprint area on building performance in reinforced-concrete buildings

Işık

Sayin

Ulu

2020

Bitlis Eren University Journal of Science and Technology

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Structural footprint area and number of stories occupy an important place among the factors affecting the behavior of buildings under earthquake effects. In this study, footprint area and number of stories are considered as two different variables. A sample reinforced-concrete building with all values such as structural system elements, dimensions, materials, material models and loading status is selected same in all different structural models. The structural analyzes were made for a single direction since the structure was chosen symmetrically. In each building model, the axle clearance has been increased by one meter in both directions. As the second variable, four different story numbers were chosen as 5, 6, 7 and 8. Eigenvalue and static pushover analyzes were performed for the each structural model. Target displacement for damage estimation, period, stiffness and base shear force values were obtained for all models, respectively. Both, Eurocode 8-Part 3 and Turkish Seismic Design Code-2018 were considered in the analysis. As the building footprint area and number of story increase, period, displacement and target displacement increase for both codes.

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“…Mode shapes and natural frequency for any structure can be obtained by using eigenvalue analysis. Structure-related modal period, frequency, modal participation factors, effective modal masses and their percentages can be calculated by this analysis (Luo et al, 2017;Antoniou and Pinho, 2003;Kutanis et al, 2017;Nikoo et al, 2017). Based on the eigenvalue analysis the natural vibration period is 0.552 s for TSDC-2007 and 0.926 s for TBEC-2018.…”

Section: Structural Analysis For Sample Rc Building Along the Nafzmentioning

confidence: 99%

Time-dependent model for earthquake occurrence and effects of design spectra on structural performance: a case study from the North Anatolian Fault Zone, Turkey

Işık¹,

Ekinci²,

Sayıl³

et al. 2021

Turkish J Earth Sci

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We have investigated the time-dependent seismicity model of the earthquake occurrence on a regional basis through the North Anatolian Fault Zone (NAFZ). To that end, the studied region has been subdivided into 7 seismogenic zones considering the seismotectonic criteria, and then regional time and magnitude predictable (RTIMAP) model has been performed. Intervened times and magnitudes of main shocks produced in each zone have predictive properties defined by the RTIMAP. The probabilities of the next main shocks in 5 decades and the magnitudes of the next events have been estimated using the formation time and magnitude of the past events in the zones. In the second step of the study, we have considered 17 settlements located on the NAFZ to perform point-based site-specific seismic hazard analyses and to determine the design spectra and earthquake parameters using updated Turkish Earthquake Hazard Map. Eigen value and static adaptive pushover analyses have been applied for the sample reinforced concrete building using the design spectra obtained from each settlement. This sample building has been modelled with the same structural characteristics (i.e. material strength, column and beams, applied loads, etc.) for all of the settlements. We have determined that the earthquake building parameters differ from each other which indicates the significance of site-specific seismicity characteristics on the building performance.

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Alternative instrumentation schemes for the structural identification of the reinforced concrete field test structure by ambient vibration measurements

Cited by 15 publications

References 4 publications

The mutual interaction between the structural footprint and number of floors in steel structures

The mutual interaction between the structural footprint and number of floors in steel structures

The effects of changing story number and structural footprint area on building performance in reinforced-concrete buildings

Time-dependent model for earthquake occurrence and effects of design spectra on structural performance: a case study from the North Anatolian Fault Zone, Turkey

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