Structural Performance of a New Blind-Bolted Frame Modular Beam-Column Connection under Lateral Loading

Cho, Bong-Ho; Lee, Jae Sub; Kim, Hong-Jin; Kim, Dae‐Jin

doi:10.3390/app9091929

Cited by 39 publications

(18 citation statements)

References 21 publications

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“…In construction practice, various solutions for nodal connections of modular buildings elements are common [10][11][12][13]. One of the most common solutions is the direct welding of girders from the channels to columns made of square or rectangular pipes (Fig.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the modular building metal frame nodal connection rotational stiffness

2021

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The research subject is the rotational stiffness of the modular building metal frame nodal connection. The stiffness of nodal connections has a significant impact on the results of calculating the load-bearing frame of a modular building. It is known that absolutely rigid connections exist only in theory. In practice, each nodal connection has a finite stiffness, as evidenced by numerous studies of the researchers. When designing the real objects, the studies on the stiffness of nodal connections of a certain design should be carried out. As a rule, when designing real objects, there is no time to carry out the research. The designer operates with well-known and reliably proven recommendations. It is important for him to have the ready-made solutions for implementation in design practice. Such solutions can be provided on the basis of preliminary studies of the joints’ behavior of the structural elements under load. The article presents a solution to such a problem. The study of the stiffness of the nodal connection with the connected elements parameters variation has been carried out. The purpose of the study is to find the boundaries of design solutions at which the connection can be considered rigid.

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Section: Methodsmentioning

confidence: 99%

Investigation of the modular building metal frame nodal connection rotational stiffness

2021

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“…Flow rule defines the direction of plastic strain vector. The equivalent plastic strain (PEEQ) criterion was utilized, which can be expressed by Equation (6). For the hardening stage, isotropic hardening was assumed.…”

Section: Materials Modelingmentioning

confidence: 99%

“…Unlike conventional steel construction, workplace or space between modules is limited and onsite welding and bolting techniques to join beams and columns or modules are difficult to perform compared to conventional steel structures construction. Due to a lack of guidelines and code of practice, the design of modular structures has been subject to investigation by many researchers [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In recent years, a number of intermodular connections has been proposed, and their seismic performance under monotonic and cyclic loading has been evaluated experimentally and analytically [17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Proposed Self-Locking Joint for Modular Steel Structures

et al. 2021

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The intermodular connection between modules plays a vital role in the overall performance of modular structures. The separation between a column and connection is possible due to the absence of links (welding or bolting) since limited space is available between modules. This study proposed a self-locking joint to be used in a modular steel structure, connecting columns with a connection without need of extra space between modules. The behavior of the proposed connection subjected to monotonic load was evaluated using a finite element approach using ABAQUS software. The influencing factors contributed to the behavior of the self-locking connection and columns observed using a parametric study. The parametric study was conducted by varying beam thickness, bolt pretension force and friction coefficient µ. Results indicate that the proposed connection can be classified as a semirigid connection according to Eurocode 3 and special moment frame (SMF) as recommended by AISC.

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“…The primary purpose of connections in MSB is to provide alternate load-transfer paths and maintain structural integrity if severe damage to the adjacent structural components occurs [12,13]. The lateral bearing capacity of the joint consisted of supporting plate, and blind bolts was analysed by the cyclic loading, and finally, a simplified theoretical model based on the verified FE analysis was developed [14]. The seismic performances of exterior edge connection having a box with a threaded post-tensioned rod inserted in hollow structural section (HSS) columns were studied with a series of experiments [15].…”

Section: Introductionmentioning

confidence: 99%

Numerical Studies on the Seismic Behaviour of a Prefabricated Multi-Storey Modular Steel Building With New-Type Bolted Joints

2021

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Prefabricated modular steel (PFMS) construction is an industrial technique of construction that enhances productivity, site safety, and construction quality. The assembling of prefabricated buildings needs an accurate connecting system to ensure structural integrity and effective transfer of loads and moments. Therefore, in the current study, a new-type bolted joints having a long tenon-gusset plate for horizontally, and long beam bolts for vertically connecting modular units have been developed. Nonlinear static analysis was carried out by the finite element (FE) analysis software ABAQUS. The bending performance of the joints with varying parameters and modular units with different forces scenario, was studied. To analyse the seismic performance of modular steel building (MSB), a simplification of the detailed joint with the connector was performed. Then the seismic response of full-scale four-storey simplified MSB was studied by dynamic analysis. The results revealed that joints possessed stable load-carrying capacity with adequate ductility and seismic performance. The simultaneous application of axial, lateral tension, and compression forces affected ultimate capacity, initial stiffness, and ductility of single modules more than the double modules. Moreover, the simplified model accurately mimicked the bending behaviour of joints with a fluctuation of < 4% in capacities. Inter-storey drift ratios (IDR) of both the shorter and longer directions of MSB were found lower than the code limits of 2.5%. Hence, the static analysis on joints and modular units, and dynamic analysis on MSB authenticated the effectiveness of developed joints to resist and distribute the lateral loads. Finally, the accuracy of FE analysis was verified by analysing twelve bending tests on joints listed in the references.

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Structural Performance of a New Blind-Bolted Frame Modular Beam-Column Connection under Lateral Loading

Cited by 39 publications

References 21 publications

Investigation of the modular building metal frame nodal connection rotational stiffness

Investigation of the modular building metal frame nodal connection rotational stiffness

Finite Element Analysis of Proposed Self-Locking Joint for Modular Steel Structures

Numerical Studies on the Seismic Behaviour of a Prefabricated Multi-Storey Modular Steel Building With New-Type Bolted Joints

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