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.

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 Reliability Assessment of Road Network Operation

2021 ◽  
Vol 334 ◽  
pp. 02009
Author(s):  
Maxim Sharov ◽  
Alexey Levashev ◽  
Alexander Mikhailov
Keyword(s):  
Performance Appraisal ◽  
Russian Federation ◽  
Traffic Control ◽  
Road Network ◽  
Network Performance ◽  
Network Reliability ◽  
Reliability Assessment ◽  
Peak Period ◽  
Highway Network ◽  
Network Operation

In the frame of the project «Criteria of traffic control quality and effectiveness in Russian Federation» the Transportation Laboratory of ISTU was invoved into elaboration of network performance appraisal. Two alternative congestion measures were considered. The ratio of peak period to free flow travel times was proposed as a test criterion of urban highway network reliability.

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.

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 Dynamic Accessibility Analysis of Urban Road-to-Freeway Interchanges Based on Navigation Map Paths

2021 ◽  
Vol 13 (1) ◽  
pp. 372
Author(s):  
Yadan Yan ◽  
Tianzhao Guo ◽  
Dongwei Wang
Keyword(s):  
Road Network ◽  
Network Planning ◽  
Peak Period ◽  
Impedance Model ◽  
The Road ◽  
Planning And Design ◽  
Calculation Results ◽  
Travel Impedance ◽  
Surrounding Areas ◽  
The City

Accessibility is important for road network planning and design, especially the accessibility of freeway entrances and exits, which reflects the convenience of travelers using freeways and the rationality of the connection between urban roads and freeways. Based on the path information of navigation map software, a new comprehensive travel impedance model to dynamically analyze the accessibility of freeway entrances and exits was proposed. The dynamic accessibility of freeway entrances and exits in Zhengzhou was studied using the proposed comprehensive impedance model, and the calculation results were analyzed. The accessibility of freeway entrances and exits is characterized by dynamic changes; the accessibility during the off-peak evening period is the highest, while that during the morning peak period and evening peak period is lower. The results of the comprehensive impedance model are roughly consistent with reality. From a location perspective, regardless of the period of time, the accessibility of freeway entrances and exits in the central and surrounding areas of Zhengzhou is always at a lower level, and during the off-peak afternoon period, the accessibility of the eastern part of the city is notably higher than that of the western part. Additionally, the accessibility of freeway entrances and exits is closely related to the traffic status of the road network and the characteristics of regional land use. The information can provide feedback for planning road networks and provide a reference for road network planning and traffic facility design.

Application of Projection Method Based on Combination Weight in Comprehensive Evaluation for Highway Network Planning

2014 ◽  
Vol 587-589 ◽  
pp. 1858-1861
Author(s):  
Li Wang
Keyword(s):  
Projection Method ◽  
Road Network ◽  
Comprehensive Evaluation ◽  
Network Planning ◽  
Ideal Solution ◽  
Entropy Weight ◽  
Solution Vector ◽  
Index Vector ◽  
Highway Network

In this paper projection method based on combination weights is inducted and applied in comprehensive evaluation for highway network planning. Considering the subjective and objective factors,the combination of AHP and entropy weight is more accurate. Index vector of each road network plan is projected to the most ideal solution vector,the quality of various plans can be differentiated by the projection values. An application example is given that has proved the model is right and valid.

An Efficient Multi-Objective Optimization Method for Complicated Vehicle Random Vibration

2011 ◽  
Vol 94-96 ◽  
pp. 1694-1700
Author(s):  
Wen Tao Xu ◽  
Tong Chen Miao ◽  
Zheng Liu
Keyword(s):  
Random Vibration ◽  
Optimization Methods ◽  
Kriging Model ◽  
Optimization Method ◽  
Dynamic Responses ◽  
Gaussian Random Process ◽  
Multi Objective ◽  
The Road ◽  
Multi Objective Programming ◽  
Design Variables

In this paper, a new approach is proposed and addressed for designing vehicle suspension systems based on the scheme of multi-objective programming. For complicated vehicle random vibration, a linear model is used to describe the dynamic behavior of vehicles running on randomly profiled roads. The road irregularity is regarded as a Gaussian random process. Pesudo excitation method has been used to solve the dynamic responses. And a Kriging model is introduced to build the approximate mapping relationship between the design variables and the responses. Optimal solutions are derived by means of the method of centers for structural optimization with multiple objectives. Numerical examples are given, and compared with other optimization methods.

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.

Sign in / Sign up

Export Citation Format

Share Document