Seismic model test research on the combination of rigidity with flexibility of tunnel portal in high intensity seismic areas

Cui, Guangyao; Bohan, Song; Wang, Dao‐yuan

doi:10.1080/19475705.2021.1921057

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…The seismic considerations for tunnel construction can be generally divided into three categories [21][22][23][24]. In general, the first category is to set a shock protective layer between the tunnel lining and the surrounding soils [25][26][27][28].…”

Section: Case Of Earthquake Damage Time Locations Resultsmentioning

confidence: 99%

Preliminary Mechanical Evaluation of Grouting Concrete as a Protective Layer for Tunnelling

Wan

Huang³

et al. 2023

Materials

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The aim of this study is to introduce a protective layer to safeguard tunnel structures. In practice, one viable approach to create this protective layer between the tunnel structure and surrounding rocks is to pump the material during tunnel construction. The primary components of the proposed material are porous sand, rubber, and cement. Static and dynamic experiments were conducted to assess the unconfined compressive strength (UCS), flexural stiffness, and compaction resistance at various mixing ratios. The results indicate that the addition of porous sand decreases the UCS compared to the solid sand under similar mixing conditions. The addition of rubber offers the elasticity, thereby enhancing the compaction resistance. However, increasing the rubber content compromises UCS. Furthermore, this study presents a linear equation to predict the 7-day UCS, which can be used as a rapid estimation for UCS, flexural stiffness, and compaction resistance of the proposed material. It is important to note that this study only investigates the fundamental mechanical properties of the proposed material, and further comprehensive research is necessary to fully understand its workability, durability, and other behaviour before practical application.

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Section: Case Of Earthquake Damage Time Locations Resultsmentioning

confidence: 99%

Preliminary Mechanical Evaluation of Grouting Concrete as a Protective Layer for Tunnelling

Wan

Huang³

et al. 2023

Materials

View full text Add to dashboard Cite

show abstract

Dynamic response characteristics of a circular lined tunnel under anisotropy frost heave of overlying soil at the tunnel portal section in cold regions

Zhang

Chen

2023

J. Mt. Sci.

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Shaking table test on the seismic response and reinforcement measures of double-arch tunnels in mountainous areas

Tang,

Yu,

Luo

et al. 2023

Tunnelling and Underground Space Technology

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Seismic model test research on the combination of rigidity with flexibility of tunnel portal in high intensity seismic areas

Abstract: To cite this article: Guang-yao Cui, Bo-han Song & Dao-yuan Wang ( 2021) Seismic model test research on the combination of rigidity with flexibility of tunnel portal in high intensity seismic areas,

Cited by 5 publications

References 7 publications

Preliminary Mechanical Evaluation of Grouting Concrete as a Protective Layer for Tunnelling

Preliminary Mechanical Evaluation of Grouting Concrete as a Protective Layer for Tunnelling

Dynamic response characteristics of a circular lined tunnel under anisotropy frost heave of overlying soil at the tunnel portal section in cold regions

Shaking table test on the seismic response and reinforcement measures of double-arch tunnels in mountainous areas

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