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Dergiler / Challenge Journal of Structural Mechanics / 2020 / Cilt: 6 - Sayı: 4

Comparison between fixed base and isolated base in seismic response of high-rise buildings: a case study

Anas M. FARES
Sayfa
204–214
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Finally, the time history method in the seismic design will producebase shear less than that from equivalent static method, so calibration factor for design purpose shall be used.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:In this study, the influence of soil condition under the isolated and fixed bases is studied by using ETABS 16 software for a high-rise regular building.
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Temel Bulgular & Veri:A regular buildingwith 10 floors is modeled and the results are obtained for story displacements, storyshear forces and spectral acceleration according to the Uniform Building Code 97(UBC-97) code.
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Sonuç & Katkı:Finally, the time history method in the seismic design will producebase shear less than that from equivalent static method, so calibration factor for design purpose shall be used.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Özet

In this study, the influence of soil condition under the isolated and fixed bases is studied by using ETABS 16 software for a high-rise regular building. A regular buildingwith 10 floors is modeled and the results are obtained for story displacements, storyshear forces and spectral acceleration according to the Uniform Building Code 97(UBC-97) code. The time history analysis has been performed by using 1999 Izmitearthquake record. 3 types of soil which have different stiffnesses are considered inthis study. The results show that the value of the base shear increases when the soilstiffness decreases. It also noticed that the spectral acceleration is larger in soft soilcondition than that of other soil conditions; and this confirms that the structural response spectrum depends on the soil condition. In addition, when using base isolatedbuilding the drift of lower floors will be larger than that of using base isolated, but inthe upper floors the drifts of fixed base building will be larger than that of the isolatedbase building. Finally, the time history method in the seismic design will producebase shear less than that from equivalent static method, so calibration factor for design purpose shall be used.

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Bu Makaleye Atıf Yap

FARES, A. M. (2020). Comparison between fixed base and isolated base in seismic response of high-rise buildings: a case study. Challenge Journal of Structural Mechanics, Cilt: 6 - Sayı: 4, 204–214. https://ajindex.com/articles/351787

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Kaynakça (5)

  1. Alnajajra H, Touqan A (2017). The effect of reducing superimposed dead load on the lateral seismic deformations of structures. International Journal of Civil and Environmental Engineering, 11, 1587– 1593. CSI (2017). CSI Analysis Reference Manual. Computers and Structures Inc., Berkeley. Gjorgjiev I (2012). Effects of soil medium on response of base isolated multistory frame structures. 15th World Conference on Earthquake Engineering, Lisbon, Portugal. Hassan A, Pal S (2018). Effect of soil condition on seismic response of isolated base buildings. International Journal of Advanced Structural Engineering, 10, 249–261.
  2. Hatami F (2015). Effects of soil-structure interaction on the seismic response of base isolated in high-rise buildings. International Journal of Structural and Civil Engineering Research, 4(3), 237–242.
  3. Jayalekshmi BR, Chinmayi HK (2016). Effect of soil stiffness on seismic response of reinforced concrete buildings with shear walls. Innovative Infrastructure Solutions, 1(1), 2. Kelly J, Naeim F (1999). Design of Seismic Isolated Structures, 1st edn. John Wiley & Sons Inc., USA. Magade SB, Patankar JP (2008). Effect of soil structure interaction on the dynamic behavior of buildings. Second International Conference on Emerging Trends in Engineering (SICETE). IOSR Journal of Mechanical and Civil Engineering, Pune, 9–14.
  4. Sayani PJ, Ryan KL (2009). Comparative evaluation of base-isolated and fixed-base buildings using a comprehensive response index. Journal of Structural Engineering, 135(6), 1141–1160.
  5. Touqan AR (2008). Three dimensional response spectrum soil structure modeling versus conceptual understanding to illustrate seismic response of structures. 2008 Seismic Engineering Conference Commemorating the 1908 Messina and Reggio Calabria Earthquake, American Institute of Physics. UBC-97 (1997). Uniform Building Code: Structural Engineering Design Provisions. International Conference of Building Officials, Whittier, California