Experimental study on fatigue performance of M30 high-strength bolts in bolted spherical joints of grid structures

Qiu, Bin; Xu, Yang; Zhou, Zichun; Lei, Honggang

doi:10.1016/j.engstruct.2019.110123

Cited by 22 publications

(14 citation statements)

References 24 publications

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“…where ρ is the density of material, kg/m ; I is the moment of inertia of an area, m 4 ; A is the cross-section area, m 2 ; l is the geometric length; w k is the kth weighting factor. e Lagrange method, which is effective for solving the conditional extremum problem, is used to solve the parameter wk, expressed by Advances in Materials Science and Engineering…”

Section: Bayesian Inference For Damage Evaluationmentioning

confidence: 99%

“…Under the action of cyclic load, the key parts of the structure will be damaged (Zhou et al [1]; Sun and Jahangiri [2]; Gobbato et al [3]). For example, Qiu et al [4] observed that the damage failure of high-strength bolt is liable to occur in a grid structure. Yan et al [5] found that the fatigue is a leading cause of the damage of composite and steel bridges.…”

Section: Introductionmentioning

confidence: 99%

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Damage Evaluation of Bridge Hanger Based on Bayesian Inference: Analytical Model

Ding

Dong

Yang

et al. 2021

Advances in Materials Science and Engineering

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With the increase of the long-span bridge, the damage of the long-span bridge hanger has attracted more and more attention. Nowadays, the probability statistics method based on Bayes’ theorem is widely used for evaluating the damage of bridge, that is, Bayesian inference. In this study, the damage evaluation model of bridge hanger is established based on Bayesian inference. For the damage evaluation model, the analytical expressions for calculating the weights by finite mixture (FM) method are derived. In order to solve the complex analytical expressions in damage evaluation model, the Metropolis-Hastings (MH) sampling of Markov chain Monte Carlo (MCMC) method was used. Three case studies are adopted to demonstrate the effect of the initial value and the applicability of the proposed model. The result suggests that the proposed model can evaluate the damage of the bridge hanger.

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Section: Bayesian Inference For Damage Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Damage Evaluation of Bridge Hanger Based on Bayesian Inference: Analytical Model

Ding

Dong

Yang

et al. 2021

Advances in Materials Science and Engineering

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“…Joint is one of the fundamental structural elements. Traditional joint types such as spherical joints [11][12][13][14] and tubular joints [15][16][17][18] have been widely used in gridshell structures. Recently, additive manufacturing (AM) oriented joint topology optimization (TO) has emerged in gridshell structures as a novel integrated computer-aided architectural design (CAAD) and construction paradigm [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Novel Paradigm for Steel Joints in Gridshell Structures: from Structural Optimization to Advanced Construction

Chen,

Zuo,

Huang

et al. 2023

ce papers

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Novel integrated computer‐aided paradigm/workflow for the topology optimization (TO) and additive manufacturing (AM) of steel joints in gridshell structures is proposed. The architecture scheme of gridshell structure was first established and numerically analyzed through Grasshopper parametric platform. Based on the extracted joint geometric parameters and the corresponding loading conditions, the initial joint structures were parametrically modelled using the subdivision surface method. Further parametric TO design was accomplished by the bi‐directional evolutionary structural optimization (BESO) method on the basis of cloud computing server. A series of mesh smoothing and reverse modelling algorithms were applied to the optimized joint to obtain a closed smooth surface in the NURBS form, which was then output as STL file for additive manufacturing. One typical optimized joint was additively manufactured using selective laser melting. The proposed workflow can be extended to a much wider range of spatial structures with various joint types.

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“…Several authors [12][13][14][15][16][17][18] have investigated the fatigue strength behaviour of riveted, bolted and welded connections, as well as the characterization of its fatigue fracture mechanism. Hosseini et al [12] presented an experimental characterization study of bolted shear connectors and local failure of concrete under static and fatigue loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Fatigue experimental characterization of preloaded injection bolts in a metallic bridge strengthening scenario

Pedrosa

Correia

Rebelo

et al. 2021

Engineering Structures

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All over the world, the number of civil engineering structures, particularly bridges with long service periods, has been increasing. The most common evidences of damages are the presence of corroded metallic elements and cracks in structural details due to the fatigue phenomenon. A large number of cases were found in which fatigue cracks were detected in structural details, such as riveted connections. Different strategies can be implemented for repairing and strengthening operations of old metallic riveted bridges. However, the use of injection bolts has been considered as an alternative with important advantages. In this regard, it is essential to study their performance under fatigue loading. In this investigation, an experimental campaign has been performed to assess the fatigue strength of injection bolts by means of comparison with standard bolts. These fatigue tests are defined to be representative of a structural strengthening scenario of an old metallic bridge. Experimental results show that injection bolts contribute to significantly reduce the scatter in the data related to fatigue resistance. For double shear specimens, the characteristic curve proposed for connections with injection bolts presents a detail category with 15% higher value when compared to non-injected specimens. The beneficial effect is also verified in terms of slip deformation. For single shear specimens, the overall effect of the adhesive is not clear.

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Experimental study on fatigue performance of M30 high-strength bolts in bolted spherical joints of grid structures

Cited by 22 publications

References 24 publications

Damage Evaluation of Bridge Hanger Based on Bayesian Inference: Analytical Model

Damage Evaluation of Bridge Hanger Based on Bayesian Inference: Analytical Model

Novel Paradigm for Steel Joints in Gridshell Structures: from Structural Optimization to Advanced Construction

Fatigue experimental characterization of preloaded injection bolts in a metallic bridge strengthening scenario

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