Parametric Analysis of the Performance of Steel-Concrete Composite Structures Designed with TBDY 2018

Abstract

Original scientific paperIn this study, the seismic behavior of steel-concrete composite buildings designed using ÇYTHYE 2016 and TBDY 2018 was investigated. For this purpose, composite moment resisting frame buildings with concrete filled steel tube columns and composite beams with 5, 10, 15 and 20 stories are modeled. Buildings are designed at high ductility (DCH) levels. During the design of the DCH class structures, the design was carried out for the ZA soil class for 0.79 g PGA in the region selected from the earthquake map given in the regulations. Within the scope of the study, SeismoStruct software was used during the design and performance evaluation of the structures. Incremental dynamic analyzes were used along with nonlinear static pushover analyses. In the static pushover analysis, uniform and triangular load distributions of the lateral load are adopted. In the dynamic analysis, 16 earthquake ground motions were obtained from AFAD earthquake acceleration databases according to the relevant design area and used. The variation of the seismic behavior of CMRFs depending on the variation of the floor number was investigated using nonlinear analysis results. Accordingly, the variation in lateral response, overstrength factors and ductility factors for CMRF structures are presented comparatively. In addition, the section deformation capacities were investigated during the IDR changes during dynamic and static nonlinear analyses. The behavior factor of all CMRFs, especially the CMRFs studied in the case study, demonstrated above-expected performance according to the design assumptions.

Fatigue Analysis of Leaf Springs

“…Susantha et al(Susantha et al, 2001) used experimental work on a large number of CFST elements (with different geometry and other mechanical parameters) and theorized calculations. The physical and mechanical properties of the CFST composite column used in the design models obtained are similar or close to the cross-section properties of the element used in previous studies in the literature(Etli, 2021(Etli, , 2022, 2022b, 2022a.…”

“…. Experimental data of test samples used in the literature for CFST(Baba et al, 1995;Huang et al, 2018;Srinivasan & Schneider, 1999;Tomii et al, 1977), and material models described above, and many modeled elements using fiber were examined by researchers(Etli, 2021(Etli, , 2022, 2022b, 2022a. It is stated that the results of these models, which are examined with the section model in the Seismostruct(Seismosoft, 2016) software, are obtained converging to the experimental test results (Boukhalkhal et al, 2019; Bruneau et al, 2008; Li et al, 2018; Xu et al, 2018; Zhang & Gao, 2019).…”

Performance evaluation of steel-concrete composite structures designed in poorly graded soils

“…The vertical loads passing through the floors are defined as the loads of the frame beams, and the evenly distributed loads are defined as the loads. Calibrations of element material models and behavior models were obtained from previous studies (Etli 2021c(Etli , 2022Etli and Güneyisi 2020d, 2021c, 2022b, 2022aGüneyisi and Etli 2020). The expected material strength values defined in TBEC 2018 were used to describe the performances of steel and concrete materials used in CMRF elements in nonlinear behavior models.…”

Behaviour of Composite Buildings Designed with TBDY 2018 in Main and Aftershocks

“…Ortalama Δçatı/H değeri 16 deprem durumu için sayısal ortalama olarak, kat bazında elde edilmiş ve Şekil 4'te sunulan grafikte "ORT" olarak verilmiştir. Literatürde yer alan benzer çalışmalarda olduğu üzere; yapısal performansların elde edilmesi esnasında enerji sönümleme kapasitesini temel alan parametre olarak kabul edilen Δçatı/H oranı bu çalışma kapsamında da değerlendirilmiştir (Etli ve Güneyisi, 2020, 2021, 2022. Elde edilen veriler incelendiğinde 5-MAKÇ için Δçatı/H sonuçları 0.00186 ile 0.0109 arasında değişmekte iken ortalama Δçatı/H değeri 0.00637 olarak elde edilmiştir.…”