scholarly journals Research on resilience recovery strategy optimization of highway network after disaster based on genetic algorithm

2021 ◽  
Vol 2083 (3) ◽  
pp. 032014
Author(s):  
Fayu Zhao
Keyword(s):  
Genetic Algorithm ◽  
Road Network ◽  
Normal Operation ◽  
Recovery Strategy ◽  
Minimum Loss ◽  
The Road ◽  
Performance Loss ◽  
Highway Network ◽  
The Cost ◽  
Recovery Program

Abstract In order to effectively improve the recovery efficiency of the highway network after the disaster and make the road network quickly recover to the normal operation level, the recovery strategy of the highway network after the disaster aiming at the optimal toughness was studied and formulated. First clear the toughness in this paper the definition and put forward the two toughness indexes, then constructs the model of road network resilience restored after a disaster, in considering the time, money, resources and cost conditions, through the corresponding genetic algorithm to solve, it is concluded that the shortest road repair, restore minimum loss in the process of recovery program. Finally, an example is given to illustrate how to use the model established in this paper. The results show that from the beginning of repair to the end of repair, the repair team can achieve the expected task in a faster time, which minimizes the performance loss of the road network and saves the cost.

Reliability Evaluation Model of Highway Network Connectivity in Western Mountainous Area

2013 ◽  
Vol 361-363 ◽  
pp. 2134-2139
Author(s):  
Xian Guang Wang ◽  
Xiao Nian Sun ◽  
Ming Wen Wang
Keyword(s):  
Road Network ◽  
Evaluation Model ◽  
Network Connectivity ◽  
Reliability Evaluation ◽  
Mountainous Area ◽  
The Road ◽  
Highway Network ◽  
Planning And Construction ◽  
Important Significance ◽  
Highway System

The research on the reliability of highway network connectivity has important significance in the western region. According to the characteristics of western mountainous highway, this paper sets up the reliability evaluation idea of highway network connectivity from the section to the route, from the route to the road network, and establishes the reliability evaluation model of the connectivity of section, route and road network based on the analysis of highway unit reliability. The research results provide the theoretical basis for western mountainous road network planning and construction as well as disaster-resistance and disaster-prevention countermeasures of highway system.

Reliabiliy of Road Network Layout and Optimization Methods Based on the Connectivity

2013 ◽  
Vol 779-780 ◽  
pp. 544-549
Author(s):  
Xiao Nian Sun ◽  
Shuo Chen ◽  
Yuan Yuan Mai ◽  
Xian Guang Wang
Keyword(s):  
Road Network ◽  
Network Reliability ◽  
Network Planning ◽  
Theoretical Method ◽  
Optimization Methods ◽  
Optimization Method ◽  
Construction Sequence ◽  
The Road ◽  
Network Layout ◽  
Highway Network

This paper conducts an in-depth research on applications reliability in highway network planning and optimization of construction sequence. It introduces the concept of reliability to the layout of the importance of the road network node and establishes a fairly comprehensive theoretical method of highway network planning based on the reliability from the aspects of the road network layout, evaluation, and construction sequence arrangements. Case study illustrates the proposed layout optimization method has achieved satisfactory results in the road network reliability analysis, displaying strong practical promotional value.

scholarly journals Analysis of the costs of construction and maintenance of rigid and flexible pavements

2018 ◽  
Vol 2018 (11) ◽  
pp. 31-42
Author(s):  
Antoni Szydło ◽  
Piotr Mackiewicz
Keyword(s):  
Road Network ◽  
Price Level ◽  
Asphalt Mixtures ◽  
Cost Assessment ◽  
Concrete Pavements ◽  
Cement Concrete ◽  
The Road ◽  
The Subject ◽  
On The Road ◽  
The Cost

The costs of construction and the future maintenance of expressways and motorways have a significant impact on the choice of technologies for their construction. The subject of the article is the analysis of the costs of construction and maintenance of rigid (concrete) and flexible (asphalt mixtures) pavements in Poland. The construction technologies and maintenance scenarios in service were analysed for selected pavement constructions of rigid and flexible motorways and expressways. The costs of construction and maintenance of these pavements in national conditions were determined. The fourth quarter of 2015 was adopted as the initial price level. On the basis of the analysis of the costs of construction and maintenance of the analysed structures, the advantage of rigid constructions made of cement concrete was demonstrated, especially in the aspect of the surface maintenance. The cost assessment was carried out for 30 years of exploitation. The concrete pavements on the road network in Poland have been used for over 20 years. They are present both on low-class roads and on the highest-class roads, i.e. motorways and expressways.

scholarly journals Economic Fundamentals for Selecting Directions for Modernization of Highway Network

2018 ◽  
Vol 17 (4) ◽  
pp. 331-337
Author(s):  
I. M. Tsarenkova
Keyword(s):  
Initial Data ◽  
Road Network ◽  
Methodological Approach ◽  
Transport Infrastructure ◽  
Entire Volume ◽  
Economic Relations ◽  
The Road ◽  
Highway Network ◽  
Design Solutions ◽  
Selection Of

The paper proposes a methodological approach to selection of rational directions for modernization of highway network while taking into account an increasing requirements of the national economy in a modern transport infrastructure being formed under conditions of the development of national transport and logistics system. The initial data required for variant development of design solutions contain information on existing transport and operational characteristics of the road network, intraand inter regional transport and economic relations, formed logistics supply chains, volume and structure of transportation and possible development stages for certain sections of highways. In this case initial data have a certain degree of uncertainty that requires to take design decisions with due consideration of the possibility to change information in a certain interval. The proposed options to use economic criteria make it possible to assess efficiency of logistics systems and their participants carry out operations pertaining to supply and handling of products and cargoes on specific sections of a road network and these measures are proceeding from common goals based not only on national or regional level, but also on the global level in the context of strategic planning. Study objectives play a significant role in selection of a calculation method, as well as its structure, a degree of its aggregation. Construction of an optimal scheme for modernization of a highway network presupposes to determine such totality of design solutions for construction, reconstruction and repair of motor roads with year-wise distribution for calculation period and certain network sections and such distribution of their freight flows when an amount of the reduced costs for transportation of the entire volume of products and modernization of motor roads would be minimal in accordance with transportation rates.

scholarly journals Enhancing Road Network Resilience by Considering the Performance Loss and Asset Value

2018 ◽  
Vol 10 (11) ◽  
pp. 4188 ◽  
Author(s):  
Myungsik Do ◽  
Hoyong Jung
Keyword(s):  
Road Network ◽  
Network Performance ◽  
Evaluation Method ◽  
Critical Path ◽  
Regional Scale ◽  
The Road ◽  
Performance Loss ◽  
Asset Value ◽  
Total Travel Time ◽  
Infrastructure Performance

In this study, we focus on resilience as the ability of specific infrastructure systems at the regional scale to absorb the shocks of extreme events, such as earthquakes. The occurrence of a disaster such as an earthquake leads to a rapid decrease in infrastructure performance. In the case of road networks, performance might refer to the number of drivers using the road within a certain period of time. The objective of this study is to propose a quantitative evaluation method to analyze road network performance (or performance loss) when natural disasters occur. Furthermore, we use cluster analysis and consider the performance loss and asset value in an attempt to propose a method to determine the critical path that should be prioritized for maintenance. This study aimed at analyzing hazard resilience from the network aspect through a scenario analysis depending on damage recovery after disaster occurrence. This study compared the hazard resilience speed to recover existing performance according to the scenario for damage recovery targeting the selected road network. It was found that the total increase in the utility (e.g., total travel time saved) gradually diminished as the restoration cost increased.

Applying Pavement Preservation Concepts to Low-Volume Roads

2003 ◽  
Vol 1819 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Kathryn A. Zimmerman ◽  
David G. Peshkin
Keyword(s):  
Cost Effectiveness ◽  
Preventive Maintenance ◽  
Road Network ◽  
Pavement Management ◽  
Management Information ◽  
Management Tools ◽  
Pavement Preservation ◽  
The Road ◽  
Low Volume ◽  
The Cost

As the challenges associated with managing a low-volume road network increase, agencies have realized the benefits associated with the use of pavement management tools for the road network. One of the benefits of the use of these tools is the ability to illustrate quickly and effectively the impacts of various pavement preservation strategies (such as worst-first repair) on overall network conditions. As a result, agencies are in a better position to communicate the needs of the road network to individuals responsible for the allocation of funds. In some cases, agencies have successfully lobbied for additional funds to support their road management efforts. The benefit of pavement management tools in supporting the preservation of the low-volume road network is illustrated by their use in evaluating the long-term impact of various funding strategies, the cost-effectiveness of pavement preventive maintenance programs, and various cost analyses that can be used to enhance road system management. Information from a variety of transportation agencies is used for this illustration. For instance, a summary is presented of the use of pavement management information to compare a worst-first repair strategy with a strategy that includes pavement preservation techniques. Examples are provided of the types of presentations that can be given to top management to illustrate these effects. In addition, the cost-effectiveness of pavement preservation programs is illustrated by showing the reduction in life-cycle costs and the overall benefits provided to the agency through the implementation of preventive maintenance programs.

DESIGNING AN OPTIMAL FOREST ROAD NETWORK BY CONSIDERATION OF ENVIRONMENTAL IMPACTS IN GIS OPTIMALIŲ MIŠKO KELIŲ TINKLO PROJEKTAVIMAS ĮVERTINUS POVEIKĮ APLINKAI GIS PROGRAMA / ПРОЕКТИРОВАНИЕ OПTИMAЛЬHOЙ CETИ ЛECHЫX ДOPOГ С УЧЕТОМ BOЗДEЙCTBИЯ HA OKPYЖAЮЩYЮ CPEДY, ОЦЕНЕННОГО С ИСПОЛЬЗОВАНИЕМ ГИС

2012 ◽  
Vol 20 (1) ◽  
pp. 58-66 ◽  
Author(s):  
Seyed Ataollah Hosseini ◽  
Mohammad Reza Mazrae ◽  
Majid Lotfalian ◽  
Aidin Parsakhoo
Keyword(s):  
Road Network ◽  
Negative Effects ◽  
Road Density ◽  
Forest Road ◽  
Road Verge ◽  
The Road ◽  
Road Planning ◽  
Golestan Province ◽  
Northern Forests ◽  
The Cost

Planning of forest road network is the most important issue for sustainable management of northern forests in Iran. This study represented a technical method of forest road planning by using GIS (Geographic Information Systems) in Vatan forestry plan of Golestan province, Iran. The aim of this study was to find out options for the optimization of skid trail length and for decreasing the negative effects of redundant skid trail length. Results of this study showed that the total length of forest road and the road network density was 36745 m and 8.68 m ha−1, respectively. 54% of the area was covered by these roads. 98.06 km skid trail was planned from road verge into the forest interior. The density of this skidding trail was 23.17 m ha−1. The suggested road network length measured using GIS was 47.23 km. Road density was 10.87 m ha−1, with 79% coverage. Skid trail length was 81.04 km, and skid trail density was 19.15 m ha−1. On the basis of GIS measurements, the skid trails on new road network system had shorter length and more frequency. This causes to decrease the cost of primary transportation. Moreover, in this plan the roads with suitable coverage passed from stable slopes. Santrauka Miško kelių tinklo planavimas – viena svarstomų problemų, siekiant užtikrinti tvarią miškotvarkos sistemą šiaurinėje Irano dalyje esančiuose miškuose. Šiame straipsnyje pristatomas miško kelių planavimo techninis metodas, taikant GIS (geografinės informacinės sistemos) programą ir naudojant Vatan miško, Golestan provincijoje, Irane, planus. Šio tyrimo tikslas – išsiaiškinti galimybes, kaip optimizuoti miško keliukų ilgį ir sumažinti neigiamą poveikį miškui, mažinant perteklinį šių keliukų trasos ilgį. Pirminiai rezultatai parodė, kad bendras esamų kelių ilgis siekia 36 745 km, kelių tinklas aprėpė 54% visos tiriamosios teritorijos, tankis siekė 8,68 m ha−1, o optimalus miško kelių tinklas buvo rengiamas pagal esamą 98,06 km ilgio miško keliukų tinklą, kurio tankis – 23,17 m ha−1. Bendras siūlomo kelių tinklo ilgis siekia 47,23 km, tankumas – 10,87 m ha−1, jis aprėpia 79% teritorijos. Miško keliukų ilgis – 81,04 km, tankumas – 19,15 m·ha−1. Remiantis GIS matavimais, naujo miško keliukų tinklo keliukai buvo trumpesni, tačiau jų tinklas tankesnis. Dėl šios priežasties mažėja pirminės transporto išlaidos ir sukuriama optimali miško keliukų aprėptis, pagerinamas prieinamumas. Резюме Планирование сети лесных дорог является одним из важнейших вопросов при создании упорядоченной системылесохозяйствования в северной части Ирана. В статье представлен технический метод планирования лесохозяйственной деятельности (прокладки дорог) с использованием ГИС и плана леса Ватан в провинции Гулистан Ирана. Целью исследования было выяснить возможности оптимизации длины лесных дорог и уменьшениянегативных последствий их избыточной длины. Результаты исследования показали, что общая протяженность существующих лесных дорог составляет 36 745 км, сеть дорог охватывает 54% всей исследованной территории,ее плотность – 8,68 м га−1. Оптимальная сеть лесных дорог создавалась на основании имеющейся сети лесных дорог, протяженность которой 98,06 км, плотность – 23,17 м гa−1. Протяженность предлагаемой сети дорог составит 47,23 км, плотность – 10,87 м гa−1, она охватит 79% территории. Длина лесных дорог составит 81,04 км, а плотность – 19,15 м·гa−1. На основании измерений, проведенных с использованием ГИС, длина дорог лесной сети стала короче, а сеть более густой. В связи с этим снижаются первичные затраты на транспорт, охват леснымидорогами становится более оптимальным, увеличивается доступность.

PURA for Connectivity

2012 ◽  
Vol 13 (3) ◽  
pp. 449-464 ◽  
Author(s):  
Subhash Datta
Keyword(s):  
Cost Effectiveness ◽  
Rural Areas ◽  
Road Network ◽  
Sustainable Growth ◽  
Network System ◽  
The Road ◽  
Urban Amenities ◽  
Test Region ◽  
The Cost ◽  
Over Time

The PURA (Providing Urban Amenities in Rural Areas) scheme has been designed to induce sustainable growth in underdeveloped areas. The test region is the Nuh Block, Haryana, a region severely lacking the amenities required for an area with a population of 201,816 which is increasing rapidly. The proposed development period of 2005 to 2020 is split into three equal phases to help distribute the expenditure evenly over time. Five ‘nodal’ villages are chosen to act as centres of development for the block. These are linked together through the road network system. Three alternative networks are discussed in terms of the cost-effectiveness of the design.

Importance of Road Network Layout and Optimization Methods Based on the Reliability

2013 ◽  
Vol 779-780 ◽  
pp. 1081-1088
Author(s):  
Xian Guang Wang ◽  
Xiao Nian Sun ◽  
Ming Wen Wang
Keyword(s):  
Road Network ◽  
Network Reliability ◽  
Network Planning ◽  
Theoretical Method ◽  
Optimization Methods ◽  
Optimization Method ◽  
Construction Sequence ◽  
The Road ◽  
Network Layout ◽  
Highway Network

This paper conducts an in-depth research on applications reliability in highway network planning and optimization of construction sequence. It introduces the concept of reliability to the layout of the importance of the road network node and establishes a fairly comprehensive theoretical method of highway network planning based on the reliability from the aspects of the road network layout, evaluation, and construction sequence arrangements. Case study illustrates the proposed layout optimization method has achieved satisfactory results in the road network reliability analysis, displaying strong practical promotional value.

scholarly journals Advances in Regression Kriging-Based Methods for Estimating Statewide Winter Weather Collisions: An Empirical Investigation

2021 ◽  
Vol 1 (3) ◽  
pp. 570-589
Author(s):  
Andy H. Wong ◽  
Tae J. Kwon
Keyword(s):  
Road Network ◽  
Kriging Model ◽  
Regression Kriging ◽  
Network Distance ◽  
True Nature ◽  
The Road ◽  
Statistical Measures ◽  
Network Screening ◽  
Effective Network ◽  
The Cost

Winter conditions create hazardous roads that municipalities work hard to maintain to ensure the safety of the travelling public. Targeting their efforts with effective network screening will help transportation managers address these problems. In our recent efforts, regression kriging was found to be a viable and effective network screening methodology. However, the study was constrained by its limited spatial extent making the reported results less conclusive and transferrable. In addition, our previous work implemented what has long been adopted in most of conventional studies—the Euclidean distance; however, use of the road network distance would, intuitively, result in further improving kriging estimates, especially when dealing with transportation problems. Therefore, this study improves upon our previous efforts by developing a more advanced kriging model; namely, network regression kriging using the entire state of Iowa with the significantly expanded road network. The transferability of the developed models is also explored to investigate its generalization potential. The findings based on various statistical measures suggest that the enhanced kriging model vastly improved the estimation performance at the cost of greater computational complexity and run times. The study also suggests that regional semivariograms better represent the true nature of the local variances, though an overall model may still function adequately if higher fidelity is not required.

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