Study on Seismic Behavior of Vertical Connection in Prefabricated Reinforced Concrete Structures

Abstract:

The paper attempts to research the seismic behavior and mechanical mechanisms under repeated low-cycle loading of vertical connections in prefabricated reinforced concrete structures. Eighteen specimens were designed and tested, the test process and the mechanical mechanisms are studied, the seismic behavior of connections is analyzed, and the shear resistance formulas are proposed. The theoretical values based on proposed formulas are good agreement with test results. Under repeated loading, the shear resistance decreases, the connection ductility increases with connecting bar, but decreases with connection width. However, all the connections fail crisply with poor ductility. At sudden-cracking, the shear resistance increases with connecting bar, but changes nonlinearly with connection width. The resistance is composed of attributions of mechanism of diagonal-compressive column (MDCC) and mechanism of compressive friction action (MCFA). After sudden-cracking, the shear resistance is provided by weakened MDCC and dowel action of connecting bars (DACB). It increases with connecting bar and connection width.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 1385-1394
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.1385
• Online since: May 2011
• Authors: Guo Hua Song, Dong Wei Wang, Bing Kang Liu
• Keywords: Connecting Bar, Connection Width, Prefabricated Reinforced Concrete Structures, Shear Resistance, Vertical Connection

References

[1] JGJ1-91, Design and construction specification of prefabricated panel buildings for inhabitation (in Chinese).

[2] The fifth department of Nanjing College of Technology: "Test research on alveolus joints of beam and column in prefabricated reinforced concrete structures," Report selections of reinforced concrete (2). Beijing: China construction industry press (1980) (in Chinese).

[3] Bingkang Liu, Guohua Song and Dongwei Wang: submitted to Journal of Zhengzhou University (Engineering Science). (2):74-78(2002) (in Chinese)

[4] R.Park and T.Pauly: Reinforced Concrete Structures. John Wiley & Sons, New York (1975)

[5] S.G. Tsoukantas and T.P. Tassios: Shear Resistance of Connections between Reinforced Concrete Liner Prefabricated Elements. ACI Structural Journal. 86(3): 242-149(1989)

DOI: 10.14359/2883

[6] The compiling group of 《Prefabricated panel buildings》(1997), "Prefabricated big panel buildings," Beijing: China construction industry press (in Chinese).