Techno Press

Steel and Composite Structures   Volume 29, Number 3, November10 2018, pages 391-404
Evaluation the behavior of pre-fabricated moment connection with a new geometry of pyramidal end block under monotonic and cyclic loadings
Seyed Morteza Kazemi, Mohammad Reza Sohrabi and Hasan Haji Kazemi

Abstract     [Full Text]
    Researchers have been long studying new building implementation methods to improve the quality of construction, reduce the time of assembly, and increase productivity. One of these methods is the use of modular pre-fabricated structural forms that are composed of a beam, column, short column, pyramidal end block, and connection plates. In this study, a new geometry for the pyramidal end block was proposed that helps facilitate the assembly procedure. Since the proposed configuration affects the performance of this form of connection, its behavior was evaluated using finite element method. For this purpose, the connection was modeled in ABAQUS and then validated by comparing the outputs with experimental results. The research proceeded through analyzing 16 specimens under monotonic and cyclic loading. The results indicated that using the pyramidal end block not only makes the assembly process easier but also reduces the out-of-plane displacement of the short column webs and the vertical displacement of beam end. By choosing appropriate section properties for column and beam, the connection can bear a rotation up to 0.01 radians within its inelastic region and a total of 0.04 radians without any significant reduction in its bearing capacity.
Key Words
    cyclic loading; finite element method; modular pre-fabricated structural form; monotonic loading; pyramidal end block
(1) Seyed Morteza Kazemi, Mohammad Reza Sohrabi:
Civil Engineering Department, University of Sistan and Baluchestan, Zahedan, Iran;
(2) Hasan Haji Kazemi:
Civil Engineering Department, Ferdowsi University, Mashhad, Iran.

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