Behaviour of bolted cast iron joints

Tsiampousi, Aikaterini; Yu, Jessica; Standing, J. R.; Vollum, Robert L.; Potts, David M.

doi:10.1016/j.tust.2017.05.009

Cited by 22 publications

(3 citation statements)

References 7 publications

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“…For the positive moment joints, given that bolt axial forces of M30 bolts are larger than those of M48 bolts, it is suggested to reposition the rows of M48 and M30 bolts to fully utilize their load-bearing capacity. Additionally, it is observed that deformations of steel joints are not uniformly distributed along the width direction (longitudinal direction of tunnels), exhibiting a "hogging" effect [35,36]. It is recommended to establish a refined finite element model for joint optimization.…”

Section: Analysis Of Structural Behaviormentioning

confidence: 99%

Experimental and Theoretical Investigations of the Mechanical Behavior of Column-Free Quasi-Rectangular Segmental Tunnel Linings

Liu,

Chen,

et al. 2024

Applied Sciences

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To investigate the mechanical behavior and design methodology of column-free QRST (quasi-rectangular segmental tunnel) structures, a theoretical analysis based on prototype experiments and simulation models is conducted. Initially, a prototype experimental investigation is conducted to reveal the structural behavior at the service stage. Subsequently, the ESHR model (Equivalent Stiffness Homogeneous Ring), the BS model (Beam Spring), and the MBS model (Modified Beam Spring) are used to simulate structural behavior. For design purposes, the design methodology is explored based on the ESHR model, followed by a sensitivity analysis of several key load parameters. Based on the experimental results, weak parts of the column-free QRST structure are found to include several joints (Joint 1, Joint 5, Joint 3, and Joint 8), and corresponding optimization measures are proposed. By comparing the test results, the above-mentioned three models demonstrate their applicability in structural simulation, with the ESHR model having sufficient design accuracy. A model-based deformation mechanism analysis found that joints contribute approximately 2/3 of the structural deformation. For the structural design of the column-free QRST using the ESHR model, amplifying the calculated results of structures directly subjected to the service stage by 10% suffices to meet engineering requirements. Based on the test and study, special attention should be paid to the negative bending moment regions at the waists of the structure during both the design and service stages.

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Section: Analysis Of Structural Behaviormentioning

confidence: 99%

Experimental and Theoretical Investigations of the Mechanical Behavior of Column-Free Quasi-Rectangular Segmental Tunnel Linings

Liu,

Chen,

et al. 2024

Applied Sciences

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“…Among the above three models, the beam-spring model is the most widely used one in the calculation of the segment ring. In the beam-spring model, since the joint stiffness has a significant influence on the internal force of the segment [12][13][14], many scholars have carried out model experiments on the stiffness of segment joints [15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Study on Internal Force of Tunnel Segment by Considering the Influence of Joints

Dong

Yang

Wang

et al. 2020

Advances in Materials Science and Engineering

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The mechanical performance of segments is an important aspect of the safety of tunnel structures. Study on the internal force of tunnel segment by considering the influence of joints is beneficial for obtaining a better understanding of the influence of various factors on the internal force of the segments. Based on the mechanical characteristics of shield segment joints, in which the displacements and stiffness are discontinuous, a mechanical model of the segment component under the constraints of elastic support was established. The elastic centre method and the principle of superposition were used to quantify the influence of joint displacements on the internal force of the segment component. Combined with a practical engineering application, the internal force of the segment component with joint rotation and dislocation was analysed. The displacements of the segment joints cause an unloading effect of the corresponding internal force of the joints, leading to internal force redistribution of each segment cross section. According to the spline interpolation results of the load test data of the segment joints, the internal force of the segment component under an external load is solved by the iterative method.

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“…Multi-bolted joints are made up of many bodies being in a contact [1][2][3]. For this reason, they are most often referred to as nonlinear systems in modeling and calculations.…”

Section: Introductionmentioning

confidence: 99%

Impact of nonlinearity on bolt forces in multi-bolted joints: A case of the assembly stage

Grzejda

2018

Scientia Iranica

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Behaviour of bolted cast iron joints

Cited by 22 publications

References 7 publications

Experimental and Theoretical Investigations of the Mechanical Behavior of Column-Free Quasi-Rectangular Segmental Tunnel Linings

Experimental and Theoretical Investigations of the Mechanical Behavior of Column-Free Quasi-Rectangular Segmental Tunnel Linings

Study on Internal Force of Tunnel Segment by Considering the Influence of Joints

Impact of nonlinearity on bolt forces in multi-bolted joints: A case of the assembly stage

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