Experimental study and resilience modeling for prefabricated hollow diaphragm walls of full-assembled underground stations under urban multi-disturbance conditions

Qiu, Tong; Sun, Xingming; Chen, Xiangsheng; Su, Dong; Zhang, Jiqing; Xu, Zhenyan; Song, Ran; Wang, Xiuyan

doi:10.1016/j.tust.2023.105044

Cited by 17 publications

(2 citation statements)

References 40 publications

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“…This simulation was performed on the previously mentioned robust design, as shown in equation ( 5)- (6). The tunnel was comprehensively evaluated during the entire cycle, as described by Qiu, in their strainresilience evaluation function [14].…”

Section: Establishment Of Resilience Indexmentioning

confidence: 99%

“…However, these designs neglect the recovery phase after perturbations and the time-varying performance and evolution laws of the tunnel structures. The resilience theory has been applied to enhance the safety assessment of infrastructure [10][11][12][13][14]. Huang calculated a resilience index according to the horizontal convergence of tunnels and evaluated the evolution of shield tunnel resilience during ground-stacking disturbances [11].…”

Section: Introductionmentioning

confidence: 99%

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A resilience optimization design model considering surcharge for large diameter shield tunnel

Zhang,

Li,

Huang

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Large-diameter shield tunnels face challenges owing to the complex strata and surcharges. The robustness of ground disturbance during excavation and resilience during operation in the design model must be considered. This involves establishing a damage evolution law for existing shield tunnels after surcharging and proposing a resilience design method for the entire cycle. In this study, the design process was initiated by utilizing existing borehole survey information and incorporating stratum uncertainty. Subsequently, a ground surcharge was applied to evaluate the changes in the force and deformation at different design points after surcharging. A resilience assessment was conducted in accordance with the specified criteria, and the results indicated that a majority of the design points exhibited robustness within acceptable limits after the surcharge. The original excavation design demonstrated satisfactory initial performance in terms of robustness. However, the resilience after surcharging was suboptimal, exhibiting a value of only 0.65. To enhance the resilience, the design must modify the reinforcing rate to achieve a higher resilience state of 0.8. By considering both the robustness of the design and its resilience after surcharging, modifications can be made to align the design with real operational conditions, which may help improve the overall resilience.

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Section: Establishment Of Resilience Indexmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A resilience optimization design model considering surcharge for large diameter shield tunnel

Zhang,

Li,

Huang

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

Analysis and control of the causes of the uplift of the invert of deep tunnels

Li,

2024

Discov Appl Sci

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When traversing a complex and fractured geological formation, a deep-buried highway tunnel in Yunnan Province encountered a significant uplift problem in the invert. The causes of the tunnel’s uplifted section were analyzed through on-site observations and monitoring of the lining structure’s deformation, combined with numerical simulation methods. The results indicate that the primary factors leading to the invert uplift are the softening of the surrounding rock at the invert base due to water seepage and the high water pressure in the fractured zone. The softening of the surrounding rock is crucial to the safety of the inverted uplift structure. Based on the tunnel’s engineering characteristics and the causes of the invert uplift, remediation measures such as “enhancing the drainage system, grouting with steel flower pipes, and demolishing and replacing the invert” were adopted. These measures effectively controlled the invert uplift. After the remediation, the convergence rate of the secondary lining decreased, and the deformation stabilized, indicating that the invert uplift remediation plan was reasonable and effective

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LEGO®-inspired decision-making model for automatic construction of precast diaphragm walls

Qiu,

Chen,

et al. 2024

Automation in Construction

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Experimental study and resilience modeling for prefabricated hollow diaphragm walls of full-assembled underground stations under urban multi-disturbance conditions

Cited by 17 publications

References 40 publications

A resilience optimization design model considering surcharge for large diameter shield tunnel

A resilience optimization design model considering surcharge for large diameter shield tunnel

Analysis and control of the causes of the uplift of the invert of deep tunnels

LEGO®-inspired decision-making model for automatic construction of precast diaphragm walls

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