Multi-functional solution model for spectrum compatible ground motion record selection using stochastic harmony search algorithm

Kayhan, Ali Haydar; Demir, Ahmet; Palancı, Mehmet

doi:10.1007/s10518-022-01450-8

Cited by 29 publications

(17 citation statements)

References 55 publications

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“…It is obvious that the mean spectrum of the selected single records matches well the design spectrum of EC8 [28]. The reader can also consult the pertinent studies of Demir et al [33,34] for further information about the appropriate selection of seismic records. comply with the design process, all ground motions of Tables have been recorded by accelerometers that had been installed on Soil B. Additionally, Figure 8 depicts the response spectra for these records, their mean spectrum, and the EC8 [28] design spectrum for Soil B.…”

Section: Seismic Motionsmentioning

confidence: 99%

Seismic Response of Vertical Hybrid Concrete/Steel Frames Considering Soil–Structure Interaction

Katsimpini

2024

Buildings

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The aim of this study is to investigate the seismic behavior of concrete/steel mixed structures. In engineering praxis, many buildings consist of two parts: one made of reinforced concrete and the other made of steel. There are several difficulties in the code-based seismic design of these structures due to the different dynamic responses of each discrete part. Seismic design codes, such as the IBC and Eurocode 8, do not provide instructions for structures consisting of two parts. In addition, they use a single-loading scenario, but there are many locations that are affected by more than one earthquake in a short period. Another drawback is that recent provisions do not consider soil–structure interaction effects. The specific issue addressed here is the seismic response of mixed structures, which is evaluated through inelastic time–history analysis. More specifically, the response indices involve height-wise distributions for peak interstory drift ratios, maximum floor horizontal displacements, maximum floor accelerations, and plastic hinge formations in the frame elements when they are subjected to seismic sequences of earthquakes, as well as in far fault ground motions for different soil types. The results reveal that sequential ground motions lead to increased displacement demands, and they affect the permanent displacements. This phenomenon appears in both cases of stiff and flexible soil, as well as for both regular and irregular frames. It is found that soil–structure interaction generally leads to lower values of IDR, and maximum horizontal displacement and acceleration in comparison with the case of rigid soil assumptions.

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Section: Seismic Motionsmentioning

confidence: 99%

Seismic Response of Vertical Hybrid Concrete/Steel Frames Considering Soil–Structure Interaction

Katsimpini

2024

Buildings

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“…It is noted that IDA is a set of time history nonlinear dynamic analyses under different numerous records therefore selection of seismic records is an important step to assess the performance of structures probabilistically. Some researchers evaluate the influence of the features, content and number of the seismic excitations on the analysis results [43][44][45][46][47][48][49][50]. In this paper, these records are first scaled according to the peak ground velocity (PGV).…”

Section: Ground Motion Recordsmentioning

confidence: 99%

Probabilistic investigation of the pounding effect in steel moment resisting frames with equal and unequal heights

Sadeghi,

Kazemi,

Razmkhah

et al. 2024

Res. Eng. Struct. Mat.

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In this research, the influence of the pounding phenomenon of two adjacent steel moment resisting frames (SMRFs) with 2 and 5-story with an intermediate ductility is investigated by considering equal and unequal heights under seismic excitations. In this way, two scenarios are applied. The first and second scenarios are related to the pounding of two SMRFs with an equal height (both frames with 2-story) and an unequal height (2-story and 5-story frames), respectively. In the following, at first, sensitivity analysis is conducted by the Monte Carlo simulation (MCS) method. Then, the collapse performance of the studied SMRFs is evaluated by incremental dynamic analysis (IDA), and fragility curves under 14 far-fault records and also, the failure probability is predicted by the Kriging meta-model. The results of sensitivity analysis indicate that the yield strength of cross-sections and dead load were the greatest effect on failure probability computation. Also, in the statistical level of 50%, the collapse probability of SMRFs with an equal height is 17% compared to the SMRFs with an unequal height. Also, the results of the Kriging meta-model show that the failure probability is increased by 65% in an unequal height versus an equal height.

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“…The proper selection and scaling of the earthquake acceleration records are important for this method. Some studies were conducted for this purpose [57][58][59][60][61][62]. The selected records should be suitable to the soil characteristics of the examined building, the distance between the building and fault lines, and the magnitudes of the potential earthquakes that can occur along these fault lines.…”

Section: Design Stages For Flexural Strengthening Earthquake Accelera...mentioning

confidence: 99%

Nonlinear time history analysis of a low-story RC building: Comparison of the existing and retrofitted states

Karapinar¹,

Gunes²,

Sayın³

2023

JSEAM

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The current paper presents a seismic performance assessment of a low-story RC building through the time history analysis and a retrofitting proposal accordingly. The seismic analyses were repeated for the retrofitted building model and the effectiveness of the retrofitting proposal was determined. In the first stage of the study, the design project and material characteristics of the building were examined. Using these data, a 3D model of the building was prepared on the Midas Gen program. Next, a total of 11 earthquake records were selected and scaled for nonlinear time history analysis. Using the analysis results with the codes written on the Matlab program, the damage states of the load-bearing members were determined and the building’s performance was measured. The results indicated that some load-bearing members have insufficient strength and a retrofitting proposal was made accordingly. A building model was then prepared considering the retrofitting proposal and the retrofitted building model was found to satisfy controlled damage performance criteria envisaged in the local seismic code. It is believed that the methodology presented in this study can be effectively used in similar buildings with poor structural strength for identifying structural performance and selecting proper retrofitting practices.

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Multi-functional solution model for spectrum compatible ground motion record selection using stochastic harmony search algorithm

Cited by 29 publications

References 55 publications

Seismic Response of Vertical Hybrid Concrete/Steel Frames Considering Soil–Structure Interaction

Seismic Response of Vertical Hybrid Concrete/Steel Frames Considering Soil–Structure Interaction

Probabilistic investigation of the pounding effect in steel moment resisting frames with equal and unequal heights

Nonlinear time history analysis of a low-story RC building: Comparison of the existing and retrofitted states

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