Research on design of through-diaphragm connections between CFRT columns and HSS beams

Qin, Ying; Chen, Zhihua; Han, Ning

doi:10.1007/s13296-014-3017-6

Cited by 13 publications

(5 citation statements)

References 26 publications

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“…Previous investigation on the experimental behavior of H-beam-to-CFST column connections has included that of Kang et al [1], Varma et al [2], Ricles et al [3], Shin et al [4], Cheng et al [5], Wu et al [6], Nie et al [7], Wang et al [8], Park et al [9], and Qin et al [10][11]. 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].…”

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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“…When the core region of a joint undergoes shear deformation, it transforms from a rectangular shape into a diamond shape [31]. The deformation coefficient γ of the core region is calculated using Equation ( 4), and a schematic diagram of the calculation is shown in Figure 16, where ∆ 1 -∆ 4 represent the displacements at the four corners of the core region, which are obtained through displacement measurements.…”

Section: Deformation Of the Joint Core Zonementioning

confidence: 99%

Experimental Investigation on the Seismic Behavior of Precast Concrete Beam-Column Joints with Five-Spiral Stirrups

Zheng,

Pan,

Zhen

et al. 2023

Buildings

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Precast concrete structure is a low-carbon building system that has been attracting extensive attention in recent decades. Beam–column joints are the weak links in precast concrete structures. Past studies showed that the five-spiral stirrups had excellent confinement effects and had the potential to enhance the seismic performance of concrete structures. This study proposed the reinforcement of precast concrete beam–column joints by using five-spiral stirrups and investigated their seismic performance. Considering the influences of the joint failure mode, joint type, construction method, and stirrup type, low-cycle loading tests were conducted on six full-scale precast concrete beam–column joint specimens. Various seismic behavior indicators, such as failure modes, hysteresis curves, skeleton curves, ductility, and energy dissipation, were obtained. The results indicated that the deformation capacity of the precast joints with five-spiral stirrups was comparable to that of cast-in-place joints. Under different failure design criteria, the seismic performance of the precast joints was superior to that of cast-in-place joints. Furthermore, the experimental capacities of the precast joints, using five-spiral stirrups, were higher than the calculated values according to the design code, demonstrating an adequate safety margin. This research contributes to the development of low-carbon and sustainable construction practices in the field of precast concrete structures.

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“…Although many methods have been presented for the retrofitting of open-steel-section columns, few efforts have been made regarding the application of HSS columns, which invariably experience premature local failures, namely, inelastic column chord buckling. Applying lateral restraining materials (i.e., internal and external stiffeners) to the column members is a retrofitting approach that has been commonly adopted to prevent this special class of failure phenomena [3]. The stiffeners provide some additional stiffness (strength) to the member and reduce its susceptibility to lateral deformations.…”

Section: Introductionmentioning

confidence: 99%

An BESO Approach for Optimal Retrofit Design of Steel Rectangular-Hollow-Section Columns Supporting Crane Loads

Tangaramvong

Van

2023

Buildings

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In this paper, we propose a cost-effective optimal-topology retrofitting technique for hollow-steel-section columns to sufficiently support industrial running cranes. A so-called bi-directional evolutionary structural optimization (BESO) method was encoded within the MATLAB modeling framework, with a direct interface with an ANSYS commercial finite-element analysis program, to determine the optimal topology of double external steel plates connected to columns in a 3D space. For the initial ground structure, we have adopted standard uniform double U-shaped external stiffener plates located at the top and bottom flange layers of an I-beam to box-column connection (IBBC) area. The influences of inelastic materials and the incorporated nonlinear geometry can effectively describe the premature (local buckling) failures of the columns in an IBBC area. The applications of the proposed optimal-topology BESO-based stiffening method are illustrated through the retrofitting of three hollow-steel-section columns, characterized by non-slender and slender compression sections. Some concluding remarks are provided on the pre- and post-retrofitted responses of the columns, with the results showing both the accuracy and robustness of the proposed external stiffening schemes.

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Research on design of through-diaphragm connections between CFRT columns and HSS beams

Cited by 13 publications

References 26 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

Experimental Investigation on the Seismic Behavior of Precast Concrete Beam-Column Joints with Five-Spiral Stirrups

An BESO Approach for Optimal Retrofit Design of Steel Rectangular-Hollow-Section Columns Supporting Crane Loads

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