scholarly journals Integrated risk assessment due to slope instabilities at the roadway network of Gipuzkoa, Basque Country

2018 ◽  
Author(s):  
Olga Mavrouli ◽  
Jordi Corominas ◽  
Iñaki Ibarbia ◽  
Nahikari Alonso ◽  
Ioseba Jugo ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Road Network ◽  
Basque Country ◽  
Unit Cost ◽  
Probability Of Failure ◽  
Regional Council ◽  
The Road ◽  
Transportation Corridors ◽  
Slow Moving ◽  
Slope Instabilities

Abstract. Transportation corridors such as roadways are often subjected to both natural instability and cut slope failure, with substantial physical damage for the road infrastructure and threat to the circulating vehicles and passengers. In the early 2000s, the Gipuzkoa Regional Council of the Basque country in Spain, marked the need for assessing the risk related to the geotechnical hazards at its road network, in order to assess and monitor their safety for the road users. The Quantitative Risk Assessment (QRA) was selected as a powerful tool for comparing the risk for different hazards on an objective basis. Few examples of multi-hazard risk assessment along transportation corridors exist. The methodology presented here consists in the calculation of risk in terms of probability of failure and its respective consequences, and it was applied to 95 selected points of risk (PoR) of the entire road network managed by the Gipuzkoa Regional Council. The types of encountered slope instabilities which are treated are rockfalls, retaining wall failures, slow moving landslides, and coastal erosion induced failures. The proposed methodology includes the calculation of the probability of failure for each hazard based on an extensive collection of local field data and its association with the probability of failure and the expected consequences. Instrumentation data from load cells for the anchored walls and inclinometers for the slow moving landslides were used. The expected consequences were assessed for each hazard level in terms of a fixed Unit Cost, UC. The results indicate that the risk can be comparable for the different hazards. 12% of the PoR in the study area were found to be of very high risk.

scholarly journals Integrated risk assessment due to slope instabilities in the roadway network of Gipuzkoa, Basque Country

2019 ◽  
Vol 19 (2) ◽  
pp. 399-419 ◽  
Author(s):  
Olga Mavrouli ◽  
Jordi Corominas ◽  
Iñaki Ibarbia ◽  
Nahikari Alonso ◽  
Ioseba Jugo ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Road Network ◽  
Retaining Wall ◽  
Basque Country ◽  
Unit Cost ◽  
Probability Of Failure ◽  
Quantitative Risk Assessment ◽  
Transportation Corridors ◽  
Slow Moving ◽  
Slope Instabilities

Abstract. Transportation corridors such as roadways are often subjected to both natural instability and cut-slope failures, with substantial physical damage to the road infrastructure and threats to the circulating vehicles and passengers. In the early 2000s, the Gipuzkoa Provincial Council of the Basque Country in Spain noted the need for assessing the risk related to the geotechnical hazards of its road network, in order to assess and monitor their safety for road users. The quantitative risk assessment (QRA) was selected as a tool for comparing the risk of different hazards on an objective basis. Few examples of multi-hazard risk assessment along transportation corridors exist. The methodology presented here consists of the calculation of risk, in terms of probability of failure and its respective consequences, and it was applied to 84 selected points of risk (PoR) over the entire road network managed by the Gipuzkoa Provincial Council. The types of encountered slope instabilities that are examined are rockfalls, retaining-wall failures, and slow-moving landslides. The proposed methodology includes the calculation of the probability of failure for each hazard based on an extensive collection of field data, and its association with the expected consequences. Instrumentation data from load cells and inclinometers were used for the anchored walls and the slow-moving landslides, respectively. The expected road damage was assessed for each hazard level in terms of a fixed unit cost (UC). The results indicate that the risk can be comparable for the different hazards. A total of 21 % of the PoR in the study area were found to be of very high risk.

Slow-moving landslides interacting with the road network: Analysis of damage using ancillary data, in situ surveys and multi-source monitoring data

2019 ◽  
Vol 260 ◽  
pp. 105244 ◽  
Author(s):  
Nicoletta Nappo ◽  
Dario Peduto ◽  
Olga Mavrouli ◽  
Cees J. van Westen ◽  
Giovanni Gullà
Keyword(s):  
Network Analysis ◽  
Road Network ◽  
Source Monitoring ◽  
Monitoring Data ◽  
Ancillary Data ◽  
The Road ◽  
Slow Moving

Integrated Framework for Risk and Resilience Assessment of the Road Network under Inland Flooding

2019 ◽  
Vol 2673 (12) ◽  
pp. 182-190 ◽  
Author(s):  
Ning Zhang ◽  
Alice Alipour
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Road Network ◽  
Transportation Network ◽  
User Equilibrium ◽  
Vulnerability Analysis ◽  
Integrated Framework ◽  
The Road ◽  
Flooding Events ◽  
Resilience Assessment

A transportation network facilitates the connectivity of local residential areas, improves capability for movement of goods, and contributes to economic development. Recent flooding events in the U.S. have highlighted the vulnerability of our transportation network to such events. Flooding, a predominant destructive hazard, leads to significant direct damages to physical road infrastructures and also results in significant indirect losses to communities that rely on the road network. Decision-makers, designers and planners all must understand the risks associated with such events and make adequate preparations for them. This paper proposes a holistic framework for integrating flooding hazards with vulnerability analysis of transportation road infrastructures, topologic risk analysis, and flow-based risk assessment. Vulnerability analysis of infrastructures reveals the extent of closure on roads and bridges. Topologic risk analysis, based on graph theory, provides immediate information on network characteristics that could be linked to instantaneous connectivity measures. Flow-based risk assessment uses a user equilibrium model to compute traffic time for the entire network for assessment of user losses from increased traffic time. Finally, the developed framework can be used to assess risks for a segment of the primary road system in the state of Iowa when facing flooding events with return periods of 2, 50, 200 and 500 years. It is expected that this integrated framework and the network performance measures could inform future resilience assessment and enhancement strategies in the studied region and provide a framework for other states that might wish to adopt this approach.

scholarly journals Modeling of Influence of Climate Change Character on the Territory of the Cryolithozone on the Value of Risks for the Road Network

2020 ◽  
Vol 16 (07) ◽  
pp. 65
Author(s):  
Yury Vasilievich Trofimenko ◽  
Anatoly Nikolaevich Yakubovich ◽  
Irina Anatolievna Yakubovich ◽  
Elena Vldimirovna Shashina
Keyword(s):  
Climate Change ◽  
Risk Assessment ◽  
Road Network ◽  
Climatic Conditions ◽  
Average Risk ◽  
The Road ◽  
Climate Risks ◽  
Warming Pattern ◽  
Soil Settlement ◽  
Predicted Risk

The level of climate risks is proposed to be estimated by the amount of thawing soil settlement in the formation of automobile roads, corresponding to the accepted scenario of the climate change. An updated algorithm is presented, according to which the average risk assessment for a 4-year period is divided into a risk assessment for individual years. Calculations performed for the climatic conditions of Yakutsk and Urengoy establish a significant dependence of the predicted risk on the warming pattern. The level of risk predicted when the average annual air temperature increases by 2 degrees is estimated as average (up to 526 points on a 1000-point scale). The most appropriate method of reducing this risk is to perform timely repairs to bring the road to the standard technical and operational condition without the use of special technologies for regulating the temperature regime of soil.

CALCULATION OF THE CURRENT RISK ASSESSMENT SECTIONS OF THE ROAD NETWORK OF THE SETTLEMENT

2016 ◽  
Vol 3 (1) ◽  
pp. 197-200
Author(s):  
Волков ◽  
V. Volkov ◽  
Кастырин ◽  
D. Kastyrin
Keyword(s):  
Risk Assessment ◽  
Road Network ◽  
Current Time ◽  
The Road ◽  
Points Of View ◽  
Current Risk

Considered analysis of indicators of the danger of conflict points at intersections of roads in the directions of movement of cars and pedestrians. In this case we consider two options conflict, "the car - the car" and "car - pedestrian." Data on the hazard characteristics of the calculation of the forecast available at the intersection of conflicting points of view the current time on the input values of the intensity of cars and pedestrians.

Study on Disaster Risk Assessment of Cultural Heritage and Road Network Improvement in Historical City

2011 ◽  
Vol 6 (1) ◽  
pp. 119-131 ◽  
Author(s):  
Yoongho Ahn ◽  
◽  
Hiroshi Tsukaguchi ◽  
Keiichi Ogawa ◽  
Kota Tanaka ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Cultural Heritage ◽  
Road Network ◽  
Disaster Risk ◽  
Disaster Mitigation ◽  
Passage Rate ◽  
The Road ◽  
Disaster Risk Assessment ◽  
Fire Stations ◽  
On The Road

In this study, disaster risk assessment is conducted from the viewpoint of cultural heritage disaster mitigation in historical cities to raise the capability of regional disaster mitigation in Kyoto. First, the routes connecting fire stations and cultural heritages are selected, and those which are frequently used are designated as important road sections. Next, the road passage rate at the time of disaster is calculated for each important road section. In earlier studies, a method was adopted to find the relationship between road width and the road blockage rate using the data of the Great Hanshin-Awaji Earthquake for calculation of road passage rate at the time of disaster. This study also takes the condition of buildings along the roads and the spread of fire into consideration; consequently, a more comprehensive method of calculating the road blockage rate is proposed. Lastly, vulnerable sections of road are identified based on the road passage rate calculated using the proposed method. A proposal for road network improvement to mitigate possible disaster is drafted, and the effectiveness of the proposal is examined through reliability analysis.

scholarly journals Estimating the risk related to networks: a methodology and an application on a road network

2018 ◽  
Author(s):  
Jürgen Hackl ◽  
Juan Carlos Lam ◽  
Magnus Heitzler ◽  
Bryan T. Adey ◽  
Lorenz Hurni
Keyword(s):  
Risk Assessment ◽  
Road Network ◽  
Intervention Program ◽  
Natural Hazard ◽  
Support Network ◽  
The Road ◽  
Potential Impact ◽  
Network Disruption ◽  
Restoration Cost

Abstract. Networks, such as transportation, water, and power, are critical lifelines to society. Managers plan and execute interventions to guarantee the operational state of their networks under various circumstances, including after the occurrence of (natural) hazard events. Creating an intervention program demands knowing the probable consequences (i.e., risk) of the various hazard events that could occur to be able to mitigate their effects. This paper introduces a methodology to support network managers in the quantification of the risk related to their networks. The method emphasizes the integration of the spatial and temporal attributes of the events that need to be modeled to estimate the risk. This work then demonstrates the usefulness of the methodology through its application to design and implement a risk assessment to estimate the potential impact of flood and mudflow events on a road network located in Switzerland. The example includes the modeling of (i) multiple hazard events, (ii) their physical and functional effects throughout the road network, (iii) the functional interrelationships of the affected objects in the network, (iv) the resulting probable consequences in terms of expected costs of restoration, cost of traffic changes, and duration of network disruption, and (v) the restoration of the network.

ANALYSIS METHODS AND MODELS THE OCCURRENCE OF CONGESTION ON THE ROAD NETWORK OF SARATOV

2015 ◽  
Vol 2 (2) ◽  
pp. 535-541
Author(s):  
Артемова ◽  
A. Artemova ◽  
Муравьева ◽  
N. Muravyeva
Keyword(s):  
Risk Assessment ◽  
Traffic Management ◽  
Road Network ◽  
The Road ◽  
Risk Assessment Models ◽  
Analysis Methods ◽  
On The Road ◽  
Causes Of Delays ◽  
The City

In the article, the problem of congestion, the main causes of delays and congestion on the road network of the city, presents an analysis of methods to combat congestion and risk assessment models of their occurrence, according to the service marked the busiest streets of the city. Thus, the analysis carried out in the article, enhances the effectiveness of traffic management of the city

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