Pseudo-dynamic response and analytical evaluation of blind bolted CFT frames with BRBs

Beibei Li, Jingfeng Wang, Jian Yang, Xuebei Pan, Charalampos Baniotopoulos

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


This paper presents the experimental and analytical studies on the blind bolted end plate concrete-filled steel tube (CFT) composite frames with buckling-restrained braces (BRBs). A series of pseudo-dynamic tests (PDTs) on two 2/3-scaled two-story, one-bay blind bolted end plate CFT (BECFT) composite frames with BRBs showed that the novel dual system exhibited good hysteretic behavior and high ductility. The moment capacity, initial rotational stiffness, rotation capacity and the mathematical moment-rotation model of a BECFT composite joint were systematically analyzed and modified to some extent. Meanwhile, the shear force-deformation relation of a CFT panel zone was suggested and checked for its applicability. Furthermore, the macroscopic finite element (FE) model incorporating semi-rigid characteristic of the joint and shear response of the panel zone was developed by OpenSees program. The numerical analytical results would match better with experimental data when the FE model took the gusset plate stiffness into account in comparison with other models neglecting this case. Both experimental and FE analytical results indicated that the BRBs were in elastic state to provide great lateral stiffness and resistance under small earthquakes, and they yield first to stably dissipate energy under severe earthquakes. The combination of BECFT composite frames with BRBs will extend the feasibility of the novel dual system in high- or even super high-rise buildings.

Original languageEnglish
Article number105744
Number of pages33
JournalJournal of Constructional Steel Research
Early online date21 Jan 2020
Publication statusPublished - Mar 2020


  • Blind bolt end plate joint
  • Buckling-restrained braces (BRBs)
  • Concrete-filled steel tube (CFT)
  • Macroscopic finite element (FE)
  • Panel zone
  • Pseudo-dynamic test (PDTs)

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Metals and Alloys


Dive into the research topics of 'Pseudo-dynamic response and analytical evaluation of blind bolted CFT frames with BRBs'. Together they form a unique fingerprint.

Cite this