Fire protection for TBM shield tunnel lining

Yasuda, Furitsu; Ono, Kiyoshi; Otsuka, Tsutomu

doi:10.1016/j.tust.2004.01.018

Cited by 13 publications

(2 citation statements)

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“…It is found that under the effect of the hydrocarbon fire, the safety factor deviation of the TBM tunnel increased from soft soil to stiff soil conditions while the tunnel exhibited more flexible behavior. Yasuda and Ono (2004) carried out an experimental program to investigate the measurement of the fire protection for composite TBM tunnel segments subjected to a RABT fire curve. Test results unveiled that when the fire protection is not applied on the surface, the concrete spalling attained up to 60 mm.…”

Section: Introductionmentioning

confidence: 99%

Artan Sicaklik Etki̇si̇ndeki̇ Betonarme Tünel Segmanlarinin Sem İle Sayisal Olarak İncelenmesi̇

Yılmaz

Akyüz

2022

Eskişehir Osmangazi Üniversitesi Mühendislik Ve Mimarlık Fakültesi Dergisi

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There has been growing interest in the fire-resistant design of reinforced concrete tunnel lines among structural engineers due to the fire incidents that occurred recently. A limited number of experimental works focused on the fire behavior of the conventional reinforced concrete (RC) and hybrid fiber reinforced concrete (HFRC) tunnel segments have been presented in the literature. However, there is no comprehensive numerical study related to RC shield tunnel segments subjected to elevated temperature. Thus, this study intends to establish a 3D finite element model (FEM) for the evaluation of the fire behavior of RC shield tunnel segments. At the first stage of the presented FEM, the temperature distribution that occurred in the RC tunnel segment was evaluated with heat transfer analysis conducted. In the second stage, the stress analysis was performed to calculate the load-displacement behavior of the RC tunnel segment under the combined effect of the gravity load and the elevated temperature. The results obtained from the FEM were compared with an experimental work existing in the literature. Good agreement between experimental and numerical results demonstrated that the presented FEM can be used for the determination of the behavior of RC shield tunnel segments subjected to elevated temperature.

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Section: Introductionmentioning

confidence: 99%

Artan Sicaklik Etki̇si̇ndeki̇ Betonarme Tünel Segmanlarinin Sem İle Sayisal Olarak İncelenmesi̇

Yılmaz

Akyüz

2022

Eskişehir Osmangazi Üniversitesi Mühendislik Ve Mimarlık Fakültesi Dergisi

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“…Moreover, advances have been reported in understanding the complex mechanisms governing the occurrence of thermal spalling in concrete, especially related to the influence of the materials' properties, the section geometry, and the fire scenario [18]. This phenomenon negatively affects the bearing capacity of tunnels [19] mostly due to the reduction of cross-sectional area, which may reach more than 50% in severe cases [15,20]. In this sense, some predictive numerical models capable of estimating the occurrence of thermal spalling in plain concrete and FRC have been developed at micro-and meso-scale [21][22][23][24], however engineeroriented models focused on the design of tunnels are scarce.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the post-fire residual bearing capacity of FRC and hybrid RC-FRC tunnel sections considering thermal spalling

Serafini

Fuente

2021

Mater Struct

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A design-oriented numerical model for the analysis of RC, FRC, and RC-FRC tunnel sections exposed to fire with different spalling parameters is presented. The numerical model is conceived in two steps: the first is the determination of the temperature field in the cross-section exposed to fire according to the spalling parameters; and the second is the determination of the M-N interaction envelopes based on the thermal field in the section. At last, a parametric study was conducted to evaluate the effect of the fire curve, the spalling parameters, the reinforcement type, and the rebar's concrete cover on the bending capacity of the sections. The results showed that the use of FRC as total or partial substitution to RC mitigates the fire-related reduction in bending capacity of the sections. Moreover, increasing the RC concrete cover is beneficial only if thermal spalling is avoided. When thermal spalling occurs, the FRC and RC-FRC solutions yielded the lowest reductions in the bending capacity among the reinforcement solutions tested.

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Full-scale fire tests of RC metro shield TBM tunnel linings

Yan

Zhu

et al. 2012

Construction and Building Materials

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Fire protection for TBM shield tunnel lining

Cited by 13 publications

References 0 publications

Artan Sicaklik Etki̇si̇ndeki̇ Betonarme Tünel Segmanlarinin Sem İle Sayisal Olarak İncelenmesi̇

Artan Sicaklik Etki̇si̇ndeki̇ Betonarme Tünel Segmanlarinin Sem İle Sayisal Olarak İncelenmesi̇

Assessment of the post-fire residual bearing capacity of FRC and hybrid RC-FRC tunnel sections considering thermal spalling

Full-scale fire tests of RC metro shield TBM tunnel linings

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