Simplified spring models for concrete segmental lining longitudinal joints with gaskets

Yang, Fan; Cao, Shengfei; Qin, Gan

doi:10.1016/j.tust.2019.103227

Cited by 13 publications

(16 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As for the influence of the gasket holes opening rate on the sealing gasket waterproofing, based on the previous research conclusions, 4,5,6,8,10,12,14,21,22 the gasket model in this section will adopt the ''Sheffield'' section with double-row circular staggered holes. The influence of the area change of closed holes portion (orange), open holes circular portion (blue), and open holes trapeziform portion (green) on the waterproof performance of the sealing gasket was studied with the opening rate as the control variable.…”

Section: Influence Of Opening Ratementioning

confidence: 99%

See 1 more Smart Citation

Characteristic parameters’ optimization based on contact pressure of sealing gasket for segmental joints

Zhang

Yunyao²,

Qianke

2020

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The aim of this study is to optimize the characteristic parameters of the segmental joints based on the contact pressure of sealing gasket. The design status of shield tunnel segment joint sealing gasket material, cross-section type, and holes arrangement through statistical data are first analyzed using the numerical simulation method. The result of this study indicates that the linear regression analysis of the outer contour parameters of the gasket was carried out using the bottom edge length of the gasket as the control variable in accordance with the statistical samples, and the influence of geometric parameters on the waterproofing design of sealing gasket is analyzed by numerical simulation from the aspects of the number of closed holes, the shape of closed holes, and the change of the opening rate in different parts. Characteristic parameters optimization of rubber hardness parameters on waterproof design of sealing gaskets have been completed on the contact pressure of sealing gasket for segmental joints. It provided some references for the design, production, processing, and quality inspection of shield tunnel gasket in the future.

show abstract

Section: Influence Of Opening Ratementioning

confidence: 99%

“…Water leakage is all along one of the potential problems of underground structures. [3][4][5][6] It has become a topical issue for segmental joints of shield tunnels during the construction and the operation stages. However, characteristic parameters of sealing gasket in shield tunnels have been seldom obtained.…”

Section: Introductionmentioning

confidence: 99%

Characteristic parameters’ optimization based on contact pressure of sealing gasket for segmental joints

Zhang

Yunyao²,

Qianke

2020

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…To take account of the EG, as presented in Figure 2b, the existing analytical approaches for the joint with EG are mainly based on the assumption that the concrete is much more rigid than EG, and the deformations of EG are much greater than those of the concrete. Therefore, only the compressive strains of EG are taken into consideration, while the compressive strains of the concrete attached to the EG are neglected [19][20][21][22][23][24]. In sum, this assumption only considers the stress generated by the compression of the EG instead of the concrete-EG-concrete composite structure.…”

Section: Introductionmentioning

confidence: 99%

“…However, according to the constitutive model of EG, the rigidity of EG tends to be increased rapidly with increasing the compressive stress, and the EG can no longer be considered as a flexible material in this condition [16,25,26]. This leads to the result that, when the joints are subjected to large loads, the joint rotational stiffnesses calculated by the analytical approaches cannot coincide well with the numerical results [22][23][24]. Therefore, the deformations of the EG and the attached concrete should be both taken into consideration in the analytical approach to calculate the joint rotational stiffness.…”

Section: Introductionmentioning

confidence: 99%

An Improved Analytical Approach for Segmental Joint Rotational Behavior Considering the Elastic Gasket

Huang

Yang

2022

Applied Sciences

Self Cite

View full text Add to dashboard Cite

To fully consider the effect of elastic gasket (EG) on the segmental joint rotational behavior, an improved analytical approach is proposed to simulate the joint rotations and obtain the rotational stiffnesses. By comparing the analytical results with the experimental results and numerical results, the joint compression zone should be simulated by the concrete–EG–concrete (CGC) model instead of rigid–EG–rigid (RGR) model or concrete–concrete (CC) model. Since the analytical approach with the CGC model can simulate the combined work of EG and concrete well, it is a more effective approach to obtain the joint rotational stiffnesses. According to these analytical results, the EG has a great impact on softening the joint rotations, and this leads the rotational stiffnesses of the joint with EG to be evidently smaller than those of the joint without EG. In addition, with decreasing the axial force or increasing the EG thickness, this softening effect tends to be more obvious. Therefore, the EG is a significant factor which should be fully considered during the theoretical analysis for the joint rotation behavior, or it may lead to an unreliable design for the segmental lining.

show abstract

“…However, numerical simulations 14 and experimental results 15 reveal that the segmental lining behavior is particularly dependent on the rotational stiffness. Therefore, the longitudinal joint rotational stiffness was investigated based on laboratory tests, 16,17 numerical simulations 18,19 and analytical models 1,20,21 . Because of the complex details of the segmental joints and the material nonlinearity, the joint rotation stiffness behaves nonlinearly with increasing internal forces 5,22,23 .…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and simplified analytical model for the longitudinal joint bending stiffness of a tunnel considering axial force

Yuan

Liang

Fang

2021

Structural Concrete

View full text Add to dashboard Cite

show abstract

Simplified spring models for concrete segmental lining longitudinal joints with gaskets

Cited by 13 publications

References 20 publications

Characteristic parameters’ optimization based on contact pressure of sealing gasket for segmental joints

Characteristic parameters’ optimization based on contact pressure of sealing gasket for segmental joints

An Improved Analytical Approach for Segmental Joint Rotational Behavior Considering the Elastic Gasket

Numerical simulation and simplified analytical model for the longitudinal joint bending stiffness of a tunnel considering axial force

Contact Info

Product

Resources

About