Resilience Assessment Tool for Tunnels Exposed to Blast and Fire

Zhu, Zheda; Guo, Qi; Quiel, Spencer; Naito, Clay; University Transportation Center for Underground Transportation Infrastructure; Colorado School of Mines

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Resilience Assessment Tool for Tunnels Exposed to Blast and Fire

2020-02-21
By Zhu, Zheda ; Guo, Qi ; Quiel, Spencer ; ...

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English

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Details:

Creators:

Zhu, Zheda ; Guo, Qi ; Quiel, Spencer ; Naito, Clay

Zhu, Zheda ; Guo, Qi ; Quiel, Spencer ; Naito, Clay Less -
Corporate Creators:

University Transportation Center for Underground Transportation Infrastructure ; Colorado School of Mines

University Transportation Center for Underground Transportation Infrastructure ; Colorado School of Mines Less -
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology Less -
Subject/TRT Terms:

[+]

Disaster Resilience Fires Heat Flux Repairing Risk Assessment Spalling Tunnel Lining Tunnels
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

University Transportation Center for Underground Transportation Infrastructure (UTC)
Abstract:

This report proposes the framework to quantify the tunnel structural fire resilience and risk by considering the real thermal impact on tunnel liner result from vehicle fire hazards, the corresponding damage, the inspection, and repair process afterward, and tunnel traffic volume and composition. The fast-running computational tool Confined Discretized Solid Flame (CDSF) model is upgraded to adapt to the longitudinal ventilated situation. Together with the natural ventilated model, it provides heat flux distribution on the tunnel liner. The spalling behavior of concrete tunnel subjected to thermal impact is simulated with Matlab-SAFIR interactive method while the damage is classified according to repairing procedure. By considering the uncertainties of the thermal properties of the concrete liner, the damage classification map is developed through the stochastic approach and applied to quantify the time for repair efficiently. The resilience of the tunnel is then measured with the metric of tunnel functionality loss. Uncertainties associated with tunnel fire (i.e., combustion energy), tunnel condition (i.e., dimension, ventilation, and presence of Fixed Fire-Fighting System (FFFS)), and tunnel traffic (i.e., volume and composition) are included in this calculation process. The framework provides information for decision-making on tunnel fire safety in terms of the design, renovation, inspection, and repair of tunnels.
Format:

PDF
Collection(s):

University Transportation Centers
Main Document Checksum:

[+]

urn:sha-512:9b12718a3ca68ab1d02479b4b818d5da652bb361f85abed10ccb1e2e71eccd2401f015022bd9de1726d42757b8e87306122104b5832c801904e7ab0b434ad64f
Download URL:

https://rosap.ntl.bts.gov/view/dot/83652/dot_83652_DS1.pdf
File Type:

[PDF-14.84 MB]