A case study on the fire damage of the underground box structures and its repair works

Park, S.H.; Oh, Hyeong-Geun; Shin, Y. S.; Oh, Seung-Ju

doi:10.1016/j.tust.2005.12.042

Cited by 8 publications

(2 citation statements)

References 1 publication

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“…Su [3] proposed a weighted hierarchical comprehensive method suitable for tunnel seismic damage loss assessment, ultimately determining the degree of tunnel damage and loss ratio, along with the economic loss value of tunnel structures. Park [4] , based on mechanical characteristic parameters obtained from the Daegu subway, modeled and calculated tunnel structures, and then analyzed the damage and safety issues of tunnel structures after a fire.…”

Section: Introductionmentioning

confidence: 99%

Seismic Deformation Response Analysis of Shallow Buried Section at the Entrance and Exit of River Crossing Tunnel

Lu,

Zhang,

You

et al. 2024

E3S Web of Conf.

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Ensuring the safety of tunnel structures in unique underwater environments is of paramount importance. This study focuses on the entrance section of a river-crossing tunnel, characterized by shallow burial depths with significant variations. The tunnel structure faces challenges related to structural weakening, and its deformation response exhibits specific characteristics under seismic loads. Numerical simulation software was employed to model and calculate the deformation response of the shallowly buried entrance section under seismic load conditions, assessing the impact of changes in tunnel structural strength and burial depth. The results reveal the following key findings: (1) As the tunnel structure weakens, structures of varying strengths primarily experience vertical deformation under seismic loads, followed by horizontal deformation. Furthermore, as the tunnel structure’s strength decreases, it exhibits an increasing trend in deformation. Routine maintenance should prioritize locations where the tunnel structure weakens, implementing timely reinforcement measures to ensure adequate load-bearing capacity. (2) Considering the influence of tunnel structural burial depth, lateral deformation values rank in descending order from largest to smallest, including the tunnel bottom, middle carriageway, middle of the tunnel, and tunnel vault, while the overall lateral deformation of the tunnel is not significant, it decreases as the structural burial depth increases. (3) In relation to tunnel structural burial depth, vertical deformation values generally exceed horizontal deformation values. Sections with the highest to lowest deformation values are the tunnel bottom, middle lane of the tunnel, middle of the tunnel, and position of the tunnel vault. With increasing burial depth, the vertical deformation values decrease at a slower rate than horizontal deformation. The tunnel structure demonstrates a higher sensitivity of lateral deformation to changes in burial depth factors.

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Section: Introductionmentioning

confidence: 99%

Seismic Deformation Response Analysis of Shallow Buried Section at the Entrance and Exit of River Crossing Tunnel

Lu,

Zhang,

You

et al. 2024

E3S Web of Conf.

View full text Add to dashboard Cite

show abstract

“…This list is based on data from the following sources:Cafaro and Bertola (2010),Haack (2002),Haack (2004), ITA (2005), Khoury(2000);Kim et al (2010),Leitner (2001),Park et al (2006),Schrefler et al (2002),Vianello et al (2012) …”

mentioning

confidence: 99%