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ZEMİN RİJİTLİĞİNİN TEK SERBESTLİK DERECELİ SİSTEMLERİN SERBEST TİTREŞİMİNE ETKİSİ

EFFECT OF SOIL FLEXIBILITY ON FREE VIBRATION OF SINGLE DEGREE OF FREEDOM SYSTEMS

Journal Name:

  • Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi

Publication Year:

  • 2005

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The assumptions of frame supports being hinged or fully rigid; storey masses being concentrated at the floor levels; distributed masses and deformations of the columns being neglected are frequently seen in dynamic analysis of frames because of less effort in calculation. In practice, however, column bases of frames may usually rotate and translate a little due to elastic behavior of soil. In this case, semi-rigid support behavior can be modeled using elastic spring against rotation at the column bases of frames. In this study, free vibration of semirigid supported single degree of freedom (SDOF) systems is studied including distributed mass and P-8 effect of the columns and natural frequencies are obtained. Effects on frequency values of rotational spring coefficients at the column base and of axial force are presented in tables and graphs.
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Abstract (Original Language): 
Çerçevelerin dinamik analizinde hesap kolaylığı açısından, çerçevelerin zemine bağlandığı noktaların mafsallı veya tam ankastre olduğu, kat kütlelerinin kat seviyelerinde topaklandığı, kolonların yayılı kütlesinin ve deformasyonunun ihmal edildiği kabullerine sık rastlanmaktadır. Ancak uygulamada çoğu kez çerçevelerin zemine bağlandığı noktalar, zeminin elastik davranışı nedeni ile bir miktar dönebilmektedir. Bu durumda çerçevenin zemine bağlandığı noktaya dönmeye karşı elastik yay yerleştirilerek yarı-rijit mesnet davranışı modellenebilir. Bu çalışmada, zemine yarı-rijit bağlı tek serbestlik dereceli (TSD) sistemlerin serbest titreşim analizi kolonların yayılı kütlesi ve P-8 etkisi dikkate alınarak yapılmış ve açısal frekansları elde edilmiştir. Kolon tabanındaki dönme yay sabitindeki ve eksenel kuvvet değerindeki değişimin açısal frekans değerleri üzerindeki etkileri tablo ve grafiklerle sunulmuştur.
FULL TEXT (PDF): 
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  • 3
449
455
  • Turkish

REFERENCES

References: 

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Mühendislik Bilimleri Dergisi 2005 11 (3) 449-445
454
Journal of Engineering Sciences 2005 11 (3) 449-455
Zemin Rijitliğinin Tek Serbestlik Dereceli Sistemlerin Serbest Titreşimine Etkisi, O. Demirdağ
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