气候变化领域集成服务门户(CCPortal): Seismic risk evaluation of highway tunnel groups

CCPortal

DOI	10.1007/s11069-021-04770-1
	Seismic risk evaluation of highway tunnel groups
	Cartes P.; Chamorro A.; Echaveguren T.
发表日期	2021
ISSN	0921030X
起始页码	2101
结束页码	2121
卷号	108 期号:2
英文摘要	Tunnels allow the continuity of rural road and urban transportation networks. Their shutdown provokes a loss in the transport system’s level service, which entails higher road user costs. Earthquakes are the hazard that most affect the tunnels’ serviceability. Depending on the structural damage’s magnitude, the serviceability loss can be at different degrees, from marginal changes in traffic flow, associated with minor damages, to traffic interruption, associated with collapsing. Because of seismic phenomena’ randomness nature, its effect on tunnel serviceability is estimated in probabilistic terms. Traffic interruption probability was estimated using fragility curves, representing the probability of achieving a specific damage state regarding the seismic hazard intensity. The calibration of tunnel fragility curves requires large samples of damages, seismic intensities, and geological and constructive data, which are not always available, especially in countries with a small number of tunnels in their road network. This work proposes a simplified procedure for evaluating the tunnels’ traffic interruption probability due to earthquakes. The approach proposed uses existent seismic exposures maps, a strategy for selecting from existing fragility curves the more suitable, and a simple method to estimate the traffic interruption probability. The procedure analysed 20 tunnels affected by the Maule earthquake in Chile. These tunnels experimented PGA between 0.12 and 0.36 g. The highest risk values were obtained in tunnels without alternative routes and high repairing costs. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
关键词	Highway tunnels Risk Seismic hazard Traffic interruption probability
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206138
作者单位	Civil Engineering Department, Engineering Faculty, Universidad de Concepción, Edmundo Larenas 219, Concepción, Chile; Construction Engineering and Management Department, Engineering Faculty, Pontificia Universidad Católica de Chile, Santiago, Chile; Research Center for the Integrated Management of Natural Disasters (CIGIDEN), ANID/FONDAP/15110017, Vicuña Mackenna, Santiago, 4860, Chile
推荐引用方式 GB/T 7714	Cartes P.,Chamorro A.,Echaveguren T.. Seismic risk evaluation of highway tunnel groups[J],2021,108(2).
APA	Cartes P.,Chamorro A.,&Echaveguren T..(2021).Seismic risk evaluation of highway tunnel groups.Natural Hazards,108(2).
MLA	Cartes P.,et al."Seismic risk evaluation of highway tunnel groups".Natural Hazards 108.2(2021).