Experimental monotonic and cyclic behaviour of blind-bolted angle connections

Elghazouli, A.Y.; Mariotti, C.; Castro, José Miguel; Orton, A.H.

doi:10.1016/j.engstruct.2009.05.021

Cited by 122 publications

(87 citation statements)

References 10 publications

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“…The force B c , is assumed to be located between the bolt centreline and the edge of the bolt connecting the angle to the column in order to account for the inherent rotational flexibility of the Hollo-bolt. For more flexible angle legs, plastic hinges were observed at the inside edge of the bolt during the tests [27]. On the other hand, when relatively stiff angles were used, plastic hinges tended to move closer to the Hollo-bolt centreline.…”

Section: Prying Actionmentioning

confidence: 92%

“…This section gives a brief summary of the experimental study carried out by Elghazouli et al [27] and used herein for validation purposes. It is important to note that whenever RHS were used as columns, the beam was connected to the wider face.…”

Section: Experimental Programmementioning

confidence: 99%

“…For the cyclic tests, maximum rotations of up to ± 66 mrad were accommodated in both directions and the testing protocol shown in Figure 2 was used based on the recommendations provided by ECCS [43] where θ y refers to the rotation at yield. More detailed information on the experimental study can be found elsewhere [27].…”

Section: Experimental Programmementioning

confidence: 99%

“…The nomenclature used for the specimens follows the format T t − Gx − dy − R where T represents the specimen type (A, B or C in Figure 1), t the column face thickness in mm, G is short for grade, x represents the Hollo-bolt grade, d is short for distance ,y represents the gauge distance between the centre of the Hollo-bolt and the beam flange in mm, and R reflects the testing regime (M for monotonic and Y for cyclic). The experimental study [27] included ten monotonic and seven cyclic beam-to-column connection tests conducted under displacement-control conditions. For the cyclic tests, maximum rotations of up to ± 66 mrad were accommodated in both directions and the testing protocol shown in Figure 2 was used based on the recommendations provided by ECCS [43] where θ y refers to the rotation at yield.…”

Section: Experimental Programmementioning

confidence: 99%

“…Silva et al [39] presented an analytical model for the estimation of the column face stiffness in end-plate connections with concrete filled tubular column components; representative expressions were proposed based on finite element models as well as experimental results. However, available models on end-plate connections cannot be directly applied to blind-bolted connections with angles due to the 5 significant influence of contact phenomena as well as the complex interactions between the blind-bolts, column face and angle components as observed clearly in recent experimental studies [27]. Accordingly, there is a need for a dedicated model that provides a faithful characterisation of the response of blind-bolted angle connections.…”

Section: Introductionmentioning

confidence: 99%

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Component-based mechanical models for blind-bolted angle connections

Mariotti

Elghazouli

2010

Engineering Structures

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This paper deals with the prediction of the monotonic and cyclic response of blind-bolted angle connections between tubular columns and open beams. Firstly, the experimental study used for validation purposes is briefly described with focus on the required connection details and material properties. A mechanical model, based on the component approach, is then proposed and a detailed description of the model assumptions, component characterization, overall considerations and model validation is presented. The proposed mechanical model is also used to perform a parametric investigation into the key factors influencing the behaviour of blind-bolted angle connections. It is shown that the blind-bolt grade, angle thickness, column face slenderness and gauge distance have a significant influence on the connection behaviour. Based on these findings, simplified approaches for the estimation of the initial stiffness and moment capacity of blind-bolted connections are suggested. Failure mode considerations and simple expressions for ensuring the desired yield mechanism are also discussed. In addition to the detailed component model, this work provides information necessary for the development of practical design procedures for blind-bolted angle connections.

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Section: Prying Actionmentioning

confidence: 92%

Section: Experimental Programmementioning

confidence: 99%

Section: Experimental Programmementioning

confidence: 99%

Section: Experimental Programmementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Component-based mechanical models for blind-bolted angle connections

Mariotti

Elghazouli

2010

Engineering Structures

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Experimental study on tensile behavior of blind bolt

Jiang¹,

Li²,

Chen³

et al. 2021

ce papers

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As blind bolt can be installed only on one side, it has the advantage that ordinary high strength bolt doesn't have in the application of closed section connection. In this paper, the existing non‐standardized sleeve high strength blind bolt (NSHSBB) is improved, and standardized sleeve high strength blind bolt (SSHSBB) and small diameter blind bolt are put forward, and the tensile tests of two kinds of bolts of 8.8 and 10.9 grades with diameters of 12mm, 16mm and 20mm are carried out. It is clear that the tensile process of blind bolt can be divided into three stages by analyzing it, and the tensile stiffness and boundary loads of three stages are obtained, that is: steel plate separation load, bolt yield load and tensile bearing capacity of blind bolt. By adjusting the installation torque, the separation loads of steel plate under different torques of each blind bolt are obtained, and the relationship between the pre‐tension and the separation load of steel plate and the two stages stiffness is clarified by deducing formulas. According to the above results, the recommended installation torque and pre‐tension of blind bolt are given. The bearing capacity of blind bolt is equal to that of high strength bolt of the same grade, and its stiffness is lower than that of high strength bolt, which has little influence on the rotational stiffness of the joint is very small yet, based on the analysis.

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Swift‐Constructed Demountable Blind Bolt for Fast Execution and Disassembling of SHS Connection

Han,

Chan

2023

ce papers

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In the past decades, blind bolts were developed for structural hollow section (SHS) connection, and various types of blind bolt products have been commercially available. Nevertheless, some of the existing blind bolts cannot be easily demounted without the need of machine cutting after installation. Even if some blind bolts can achieve demountable function for structure by leaving some components inside the tube during the removal process, their installation and removal speed probably require to be raised further, or their mechanical performances may need to improve further for wider application. Therefore, it is worthy to develop a demountable blind bolt that has better mechanical performance, as well as can be installed and demounted easily and fast. In this study, the swift‐constructed demountable blind bolt is proposed. Design details, installation and removal process, material selection, heat treatment selection, relevant material examinations, and fabrication method are introduced accordingly. Experimental investigation is conducted to validate the proposed objective of this proposed bolt. Test results reveal that this proposed bolt has satisfactory mechanical performance, and the improvement of bolt tensile strength compared with the existing product can be achieved appropriately.

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Experimental monotonic and cyclic behaviour of blind-bolted angle connections

Cited by 122 publications

References 10 publications

Component-based mechanical models for blind-bolted angle connections

Component-based mechanical models for blind-bolted angle connections

Experimental study on tensile behavior of blind bolt

Swift‐Constructed Demountable Blind Bolt for Fast Execution and Disassembling of SHS Connection

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