Çelik Taban Plaka ile Manşonlu Ankraj Çubuğu Bağlantılarının Performans Değerlendirmesi

Year 2024, Volume: 3 Issue: 2, 151 - 159, 12.06.2024

Muhammed Atar , Erkut Sayın

https://doi.org/10.62520/fujece.1465442

Abstract

Bu araştırma, çevrimsel yükleme altında çelik ankraj ile açıkta kalan taban plakası bağlantılarının performansına odaklanan bir çalışmanın sonuçlarını sunmaktadır. Çalışma, kolon-ankraj bağlantılarının sünekliğini artırmayı amaçlayan yeni bir methodu tanıtmaktadır. Taban plakası ile ankraj çubuğu rondelası arasına belirli bir geometriye sahip bir çelik pul dahil edilerek, bağlantıdaki yük yolu kesintiye uğrar ve bu da daha sünek bir davranış elde edilmesini sağlar. Araştırma, yeni yöntem metodunu tanıtmak amaçlı, farklı pul şekillerine sahip açıkta kalan taban plakası bağlantılarını incelemek için doğrulanmış ve sonuçları karşılaştırılmış bir sonlu eleman (FE) modeli kullanır. Bu çalışmada açıklanan yenilikçi yaklaşım, bağlantıların kapasitelerine ek olarak bağlantıların dönme kapasitesini önemli ölçüde geliştirme potansiyeline sahiptir.

Keywords

Çevrimsel yükleme, Taban plakası bağlantısı, Süneklik, Güçlendirme, Dönme kapasitesi

Performance Assessment of Base Plate Connections with Anchor Rod Sleeves

Abstract

This research presents findings from a study focused on evaluating the performance of exposed base plate connections featuring anchor rods under cyclic loading conditions. The study introduces an innovative sleeve system approach designed to enhance the ductility of column base connections. The inclusion of a steel sleeve with defined geometric characteristics between the base plate and the anchor rod washer modifies the load path within the connection, resulting in a more ductile response. The study utilizes a validated finite element (FE) model to analyze exposed base plate connections featuring different sleeve shapes, illustrating the concept behind this novel method. The innovative approach discussed in this research has the potential to significantly increase the rotational capacity of connections without compromising their inherent strength.

Keywords

Cyclic loading, Base plate connection, Ductility, Retrofitting, Rotational capacity

References

• S. Kishiki, X. Yang, T. Ishida, N. Tatsumi, and S. Yamada, “Experimental study of concrete breakout failure mechanism in an exposed column base with a foundation beam” Eng. Struct., vol. 243, Sep. 2021.
• X. Yang and S. Kishiki, “Evaluation of ultimate strength of exposed column bases considering the bearing stress of foundation concrete” Eng. Struct., vol. 268, no. July, p. 114712, 2022.
• I. Gomez, A. Kanvinde, and G. G. Deierlein, “Exposed column base connections subjected to axial compression and flexure” AISC Final Report. Chicago., 2010.
• C. A. Trautner, T. Hutchinson, P. R. Grosser, and J. F. Silva, “Effects of detailing on the cyclic behavior of steel baseplate connections designed to promote anchor yielding” J. Struct. Eng., vol. 142, no. 2, Feb. 2016.
• K. Tsavdaridis, M. Shaheen, C. B.- Structures, and undefined 2016, “Analytical approach of anchor rod stiffness and steel base plate calculation under tension” Elsevier.
• M. A. Shaheen, K. D. Tsavdaridis, and E. Salem, “Effect of grout properties on shear strength of column base connections: FEA and analytical approach” Eng. Struct., vol. 152, pp. 307–319, 2017.
• T. Falborski, P. Torres-Rodas, F. Zareian, and A. Kanvinde, “Effect of base-connection strength and ductility on the seismic performance of steel moment-resisting frames” J. Struct. Eng., vol. 146, no. 5, May 2020.
• C. A. Trautner, T. Hutchinson, P. R. Grosser, and J. F. Silva, “Investigation of steel column–baseplate connection details incorporating ductile anchors” J. Struct. Eng., vol. 143, no. 8, Aug. 2017.
• A. Hassan, B. Song, C. G.-J. of S., and undefined 2022, “Seismic performance of exposed column–base plate connections with ductile anchor rods” ascelibrary.org.
• C. Trautner, T. Hutchinson, M. Copellini, P. Grosser, R. Bachman, and J. Silva, “Developing ductility using concrete anchorage” ACI Struct. J., vol. 114, no. 1, pp. 101–112, Jan. 2017.
• J. E. Parks, C. P. Pantelides, L. Ibarra, and D. H. Sanders, “Stretch length anchor bolts under combined tension and shear” ACI Struct. J., vol. 115, no. 5, pp. 1317–1328, Sep. 2019.
• M. Wang, C. Zhang, Y. Sun, and K. Dong, “Seismic performance of steel frame with replaceable low yield point steel connection components and the effect of structural fuses” J. Build. Eng., 2022.
• M. Wang and P. Bi, “Study on seismic behavior and design method of dissipative bolted joint for steel frame with replaceable low yield point steel connected components” Constr. Build. Mater., 2019.
• M. A. Shaheen, K. D. Tsavdaridis, F. P. V. Ferreira, and L. S. Cunningham, “Rotational capacity of exposed base plate connections with various configurations of anchor rod sleeves” J. Constr. Steel Res., vol. 201, no. August 2022, p. 107754, 2023.
• U. 2019. ABAQUS. Abaqus 6.19. Dassault Systèmes Simulia Corp, Provid RI, “No Title”
• I. R. Gomez, “Behavior and design of column base connections” University of California, Davis, 2010.