Seismic behavior of bolted beam-to-column connections for concrete filled steel tube

Wu, Lai‐Yun; Chung, Lap-Loi; Tsai, Sheng-Fu; Shen, Tung-Ju; Huang, Guo-Luen

doi:10.1016/j.jcsr.2005.03.007

Cited by 111 publications

(51 citation statements)

References 5 publications

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“…Theoretical study on the flexural strength and shear strength has been conducted by Kawano et al [12], Koester [13], Lu et al [14], Morino et al [15], Fukumoto et al [16], Park et al [17], Jiang et al [18], Nie et al [19], Rong et al [20], and Qin et al [21][22][23]. Additionally, various connection alternatives have been proposed and explored by researchers, such as the application of blind bolt [24][25][26], combined channel angle connections [27], and through-bolt connections [28]. Damage assessment [29], computationally performance simulation [30], and design approach investigation [31] represent other areas of interest.…”

Section: Introductionmentioning

confidence: 99%

Seismic Behavior of Through-Diaphragm Connections Between CFRT Columns and Steel Beams-Experimental Study

Qin¹,

Chen

Wang³

et al. 2014

Volume 10 Number 3

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This paper is an extension study to an experimental program involving one traditional and three novel through-diaphragm connections between concrete-filled rectangular tubular columns and steel H-beams. The proposed connection types utilize tapered diaphragm or triangular plates at the end of the beam to improve the seismic performance of traditional through-diaphragm connections. Based on the experimental results, the lateral force versus beam-column deformation response was assessed and the shear force versus shear distortion relationship in the panel zone was evaluated. It was observed that the improvement in connection details significantly enhanced the rotation capacity and shear stiffness. The deformation of the connections was also analyzed in terms of the contribution of the column, the beam, and the joint. In addition, the force transfer mechanism in the connections was investigated by analysis of the strain distribution The test results indicate that the proposed through-diaphragm connections are able to alleviate the stress concentration in the load transfer path and exhibit better seismic behavior. As a result, it can be concluded that the proposed connections are more suitable for applications in moment resisting frames in seismic regions.

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Section: Introductionmentioning

confidence: 99%

Seismic Behavior of Through-Diaphragm Connections Between CFRT Columns and Steel Beams-Experimental Study

Qin¹,

Chen

Wang³

et al. 2014

Volume 10 Number 3

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“…Wu, et al [32] proposed a new design of bolted beam-to-column connections for CFRT as shown in Figure 16. A mechanical model was established in order to derive theoretical equations for calculation the stiffness, the yielding shear strength and the ultimate shear strength of the panel zone.…”

Section: Figure 15 Beam-to-column Connection With Vertical Stiffenersmentioning

confidence: 99%

Development of Connections to Concrete-Filled Rectangular Tubular Columns

Chen¹,

Qin²,

Wang³

2015

Volume 11 Number 4

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Concrete-filled rectangular tubular column composite frame systems with steel beams have been widely used in moment-resisting frames for engineering practice. This paper reviewed a variety of connection details to concrete-filled rectangular tubular (CFRT) columns that have been developed by different researchers. The research on CFRT connections was divided into three phrases. The first phase dates back to the late sixties of twentieth century, when the steel moment-resisting frames were regarded as one of the most ductile systems. The second phase is defined as the period between middle nineties and the beginning of the twenty-first century, during the early stage of which the Northridge earthquake and Kobe earthquake occurred and the conventional knowledge of traditional connections were subverted, leading to the requirement of paying more attention to the investigation of connection behavior under seismic loading. The third phase passes through the following year up to the present. During this phase, various connection alternatives were proposed and studied. Based on the summary of previous studies, the future developments were presented at the end of the paper.

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“…There are two sets of bolted beam-to-column connection specimens compared in this study, as summarized in Table 2 [1,24]. The columns were composed of 400 × 400 mm square cross section steel tubes with the thickness of 6 and 8 mm, respectively.…”

Section: Model Validationmentioning

confidence: 99%

“…These elements provide the synergetic advantages of ductility and toughness associated with steel structures and high compressive strength associated with confined concrete components. The advantages of CFT columns over other so-called mixed or hybrid systems (fully encased or partially encased systems) include the fact that the concrete prevents local buckling of the steel tube wall and the confinement action of the steel tube extends the usable strain of the concrete [1,2]. Composite CFT columns are especially efficient as the vertical elements in moment-resisting frames in high seismic areas because they have a high strength to weight ratio, provide excellent monotonic and dynamic resistance under biaxial bending plus axial force, and the concrete provides additional damping [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Analyses and evaluations for composite-moment frames with SMA PR-CFT connections

Leon

2010

Nonlinear Dyn

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This paper describes seismic performance and evaluation for composite-moment frames (C-MF) with a new type of bolted connections. The study is purely analytical and explores the effort needed to establish new connection parameters without largescale physical testing. The innovative aspects of this research are in the use of partial restraint (PR) connections between steel beams and concrete-filled tube (CFT) columns that utilize a combination of lowcarbon steel and shape memory alloy (SMA) components as the main force transfer elements in the connections. The intent is to utilize the recentering provided by super-elastic shape memory tension bars to reduce building damage and residual drift after a major earthquake, and the energy dissipation of low-carbon steel components in parallel. Accurate modeling and computational efficiency were achieved through the use of a simplified joint element which includes all connection strength and deformation components. Four-and six-story C-MF models were designed for a high seismic zone in the western USA. Two connection types and three column systems installed at these prototype frame models were investigated through nonlinear pushover and dynamic analyses. The C-MF models with new bolted connections were compared to those with traditional welded connections. The results of numerical analysis demonstrate that C-MF with new PR connections show superior structural performance as indicated by small residual deformation and better distribution of the demand over the height of the structure.

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Seismic behavior of bolted beam-to-column connections for concrete filled steel tube

Cited by 111 publications

References 5 publications

Seismic Behavior of Through-Diaphragm Connections Between CFRT Columns and Steel Beams-Experimental Study

Seismic Behavior of Through-Diaphragm Connections Between CFRT Columns and Steel Beams-Experimental Study

Development of Connections to Concrete-Filled Rectangular Tubular Columns

Analyses and evaluations for composite-moment frames with SMA PR-CFT connections

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