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Elastik bağlı çerçevelerin kesme kuvvetini dikkate alarak nonlineer analizi

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Abstract (2. Language): 
In the current analysis and design of steel frames, and reinforced precast concrete frames the actual behaviour of beam-to-column connections are generally idealized either pinned or fully rigid. The rigid connection idealization indicates that relative rotation of the connection does not exist and the end moment of the beam is entirely transferred to the columns. In contrast to the rigid connection assumption, the pinned connection idealization indicates that any restraint does exist for rotation of the connection and the connection moment is zero. Although these idealizations simplify the analysis and design process, the predicted response of the frame may be different from its real behaviour In this study, the nonlinear analysis of frames composed of members flexibly connected to the nodes has been carried out taking into consideration the effect of shear deformations and a pertinent computer program has been prepared. First, using second order theory, the member stiffness matrix for a bar with rotational springs at the ends was obtained, taking shear deformations into consideration. Then, using pertinent differential equations, the fixed end forces were found for a uniformly distributed load, a concentrated load, a linearly distributed load, a symmetrical trapezoidal distributed load and a nonsymmetrical triangular distributed load. The validity of the implemented computer program was proved by solving some example problems in different ways and showing the match between the results. Problems in the literature, which were special cases of the problems treated in this study, were solved by the present computer program and the match of the results was observed. Using the implemented computer program and solving some examples, the variations of some elastostatic quantities with spring constants were examined and presented graphically.
Abstract (Original Language): 
Bu çalışmada, kesme kuvvetini hesaba katarak uçlarında dönel yaylar bulunan çubuklardan oluşan düzlemsel çerçevelerin nonlineer analizi yapılmış ve bu konuda bir bilgisayar programı hazırlanmıştır. Önce, ikinci mertebe teorisi kullanılarak ve kayma deformasyonları hesaba katılarak uçlarında dönel yaylar bulunan çubuklara ait eleman rijitlik matrisi elde edilmiştir. Daha sonra, aynı etkiler altında diferansiyel denklemler yardımıyla üniform yayılı yük, tekil yük, doğrusal yayılı yük, simetrik yamuk şeklinde yayılı yük ve simetrik olmayan üçgen şeklinde yayılı yük için ankastrelik uç kuvvetleri bulunmuştur. Hazırlanan bilgisayar programı yardımıyla incelenen örneklerde yay katsayılarının değişimine bağlı olarak bazı elostostatik büyüklüklerin değişimi grafiklerle sunulmuştur.

REFERENCES

References: 

Ackroyd, MR. ve Gerstle, K.H., (1983). Elastic
stability of flexibly connected frames, Journal of
Structural Engineering, ASCE, 109, 1, 241-245.
Aksogan, O., Akavcı, S.S. ve Görgün, H., (2005).
Analysis of frames with flexible connections,
Çukurova Üniversitesi, Mühendislik-Mimarlık
Fakültesi Dergisi, 20, 1, 1-11.
Aksogan, O. ve Akkaya, F., (1991). A Computer
program for the analysis of flexibly connected
frames, Çukurova Üniversitesi, MühendislikMimarlık Fakültesi Dergisi, 6, 2, 25-41.
Aksogan, O. ve Dinçer, R., (1991). Nonlinear
analysis of planar frames with linear prismatic
members having rigid end sections taking shear
deformation into consideration, Çukurova
Üniversitesi, Mühendislik-Mimarlık Fakültesi
Dergisi, 6, 1, 125-137.
Aksogan, O. ve Görgün, H., (1993). The nonlinear
analysis of planar frames composed of flexibly
connected members, Çukurova Üniversitesi,
Mühendislik-Mimarlık Fakültesi Dergisi, 8, 2,
117-129.
Azizinamini, A. ve Radziminski, J.B., (1989). Static
and cyclic performance of semi-rigid steel beamto-column connections, Journal of Structural
Engineering, ASCE, 115, 12, 2979-2999.
Cunnigham, R., (1990). Some aspects of semi-rigid
connections in structural steelwork, The
Structural Engineer, 68, 5, 85-92.
Görgün, H. ve Yılmaz, S., (2008). The nonlinear
analysis of planar frames composed of flexibly
connected members taking shear deformations
into consideration, Çukurova Üniversitesi,
Mühendislik-Mimarlık Fakültesi Dergisi, 23, 1,
15-28.

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