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作者:

Zhang, A. (Zhang, A..) | Guo, Z. (Guo, Z..) | Liu, X. (Liu, X..) (学者:刘晓) | Gao, Z. (Gao, Z..)

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摘要:

In order to solve the problem that assembly degree of traditional structure is not high, a prefabricated steel frame joint with Z-shaped cantilever beam splicing was presented. Based on the experimental results of six specimens, the static and quasi-static finite element analysis was carried out. The moment-rotation curves of both the beam end and the splice, and the failure modes of the joints were obtained, and the results were compared with experimental results. The change rules of the friction between contact surfaces, the extrusion force between bolt shanks and holes, and the bolt tension force were obtained. The effects of bolt number, bolt hole diameter, types of stiffeners and types of framework beams on the seismic behavior of the joints were analyzed. The moment-rotation relationship model of the splice was constructed through force analysis of the states of loading process. The results show that reducing the number of flange high-strength bolts can improve ductility performance and plastic rotation capacity of joints without reducing much of the carrying capacity of joints. The oversized bolt holes were used instead of standard bolt holes and the triangular vertical stiffeners were used instead of internal diaphragms have little impact on seismic behavior of the joint. The slippage between the flanges did not occur at the same time. Most bolts had a certain amount of tension loss during the loading process. © 2016, Editorial Department of Journal of Beijing University of Technology. All right reserved.

关键词:

Cantilever beam splicing; Plastic rotation capacity; Prefabricated steel frame; Seismic behavior; Slippage between contact surfaces

作者机构:

  • [ 1 ] [Zhang, A.]Beijing Engineering Research Center of High-rise and Large-span Prestressed Steel Structure, Beijing University of Technology, Beijing, 100124, China
  • [ 2 ] [Guo, Z.]Beijing Engineering Research Center of High-rise and Large-span Prestressed Steel Structure, Beijing University of Technology, Beijing, 100124, China
  • [ 3 ] [Liu, X.]Beijing Engineering Research Center of High-rise and Large-span Prestressed Steel Structure, Beijing University of Technology, Beijing, 100124, China
  • [ 4 ] [Gao, Z.]Beijing Engineering Research Center of High-rise and Large-span Prestressed Steel Structure, Beijing University of Technology, Beijing, 100124, China

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来源 :

Journal of Beijing University of Technology

ISSN: 0254-0037

年份: 2016

期: 11

卷: 42

页码: 1669-1680

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WoS核心集被引频次: 0

SCOPUS被引频次: 8

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