Behavior of precast segmental utility tunnel under ground surface Explosion: A numerical study

Qian, Haimin; Li, Jun; Zong, Zhouhong; Wu, Chengqing; Pan, Yahao

doi:10.1016/j.tust.2021.104071

Cited by 21 publications

(2 citation statements)

References 44 publications

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“…The Karagozian & Case model (i.e., *MAT_CONCRETE_DAMAGE_REL3 or *MAT_72R3 in LS-DYNA) that considers strain hardening, damage, strain softening, and strain rate effect is used to model the concrete of tunnel lining in this study. The accuracy of this material model in simulating the dynamic behaviour of concrete subjected to blast loads has been reported in many previous studies (Chen et al, 2015;Li et al, 2017;Qian et al, 2021a;Qian et al, 2021b). C25 concrete (i.e., concrete with the compressive strength of 25 MPa) is considered in this study, and the basic parameters are listed in Table 1.…”

Section: Lining Materials Modelmentioning

confidence: 96%

Dynamic response of road tunnel subjected to internal Boiling liquid expansion vapour explosion (BLEVE)

Cheng

Chen

Hao

et al. 2022

Tunnelling and Underground Space Technology

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Section: Lining Materials Modelmentioning

confidence: 96%

Dynamic response of road tunnel subjected to internal Boiling liquid expansion vapour explosion (BLEVE)

Cheng

Chen

Hao

et al. 2022

Tunnelling and Underground Space Technology

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“…Pilao et al studied the effect of changes in multiple environmental factors on the occurrence of explosions in gas pipelines [14]. Some scholars have studied the combined effects of the area of the explosion, the location of the surrounding facilities, and the orientation of the fire on the utility tunnel [15,16]. Gas leaks are the root cause of both fires and explosions.…”

Section: Introductionmentioning

confidence: 99%

Simulation Study on Gas Leakage Law and Early Warning in a Utility Tunnel

Wang,

Zhang,

Gong

2023

Sustainability

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The large-scale construction of utility tunnels improves people’s daily life, but also increases the probability of gas leakage events. Gas is a flammable and explosive substance, and once a leakage and explosion accident occurs it will seriously affect the safety of personal property and disturb the urban order. Although the application of utility tunnels is becoming more and more widespread, the research on its operation and maintenance management is not sufficient. How to effectively and safely implement the operation and maintenance management of utility tunnels has become an important issue of concern for scholars at home and abroad. This paper takes the Beijing Winter Olympic Games utility tunnels as the research object, uses ANSYS Fluent R18.0, establishes the simulation model through the relevant fluid mechanics theory, and theoretically demonstrates the physical relationships of the relevant parameters. Through the simulation analysis of various leakage scenarios, the gas diffusion law is obtained when a small hole leaks, so as to determine the most economical and safest gas sensor deployment mode. The research results can provide theoretical support for the construction of utility tunnels in the future, provide ideas for the preparation of relevant system documents for utility tunnels, and ensure the orderly and scientific construction of utility tunnel projects.

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Investigations on geopolymer-based seawater sea-sand high performance concrete slabs reinforced with basalt FRP bars under direct contact explosions

Wei,

Liu,

Liu

et al. 2024

Construction and Building Materials

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Behavior of precast segmental utility tunnel under ground surface Explosion: A numerical study

Cited by 21 publications

References 44 publications

Dynamic response of road tunnel subjected to internal Boiling liquid expansion vapour explosion (BLEVE)

Dynamic response of road tunnel subjected to internal Boiling liquid expansion vapour explosion (BLEVE)

Simulation Study on Gas Leakage Law and Early Warning in a Utility Tunnel

Investigations on geopolymer-based seawater sea-sand high performance concrete slabs reinforced with basalt FRP bars under direct contact explosions

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