scholarly journals Optimization of Performance Evaluation of Urban Road Pavement

2021 ◽  
Vol 283 ◽  
pp. 02033
Author(s):  
Ziyi Zhang ◽  
Yu Sun ◽  
Han Xu ◽  
Qiyun Zhu
Keyword(s):  
Performance Evaluation ◽  
Evaluation Model ◽  
Vital Role ◽  
Set Pair Analysis ◽  
Road Maintenance ◽  
Entropy Weight ◽  
Urban Road ◽  
The Road ◽  
Road Pavement ◽  
Pair Analysis

In recent years, urbanization has developed rapidly, and urban road play a vital role as the premise. Due to the good effectiveness of asphalt pavement, which is more popular in urban road, and road maintenance demands are also increasing. In order to make the maintenance work appropriate, accurate pavement performance evaluation is the premise. This paper collects the data of a road pavement condition in Shanghai and calculates the sub-indexes of each section. We use the entropy weight method to obtain the influence degree of each sub-index. Then we use the revised set pair analysis to construct the comprehensive performance evaluation model of urban road pavement. The analysis shows that compared with the standard method and the set pair analysis, the revised model is more objective, in line with the actual use of the road.

Practice Analysis of Urban Road Pavement Roughness and Detect of Destruction

2011 ◽  
Vol 250-253 ◽  
pp. 3688-3691
Author(s):  
Jr Hung Peng ◽  
Po Hsun Sung ◽  
Jyh Dong Lin ◽  
Kuang Yi Wei
Keyword(s):  
Management System ◽  
Maintenance Management ◽  
Conservation Strategy ◽  
Road Maintenance ◽  
Pavement Condition ◽  
Urban Road ◽  
The Road ◽  
Road Pavement ◽  
Pavement Roughness ◽  
New Construction

The urban road becoming more perfect, pavement engineering is from new construction to maintenance management. The authorities, from acceptance the new construction turn into survey of the road‘s situation and control of various types of damage and road conditions on time, to maintain a good condition of the road. In this study we use the CCD with the general Global Positioning System to provide GPS coordinates and have a street shooting for each 20m of road, record of the CCD road imaging system, and with GPS coordinates, the street pavement shooting can identify the highest frequency distress type within 100m of the road, and compare with the value of IRI for statistics, considering different distress conditions associated with the International Roughness Index, and to explore the causes. This study has an Urban Road Management System, it divided into road flat index query and pavement condition index query, and user can use this system know the pavement condition every section. The road maintenance unit can be judged by this indicator status of pavement roughness to develop a conservation strategy of each section, reflecting the degree of conservation of each section, making the pavement to maintain a good quality. Urban road maintenance management system is for the each authorities built the road pavement maintenance management system for pavement managers with different levels of management authority, and to assist in the system can provide information for urban roads to do planning, query and management, it is beneficial to the authorities to implementation of urban roads and other road maintenance operations, they can immediately understand the pavement condition.

scholarly journals Improved Set Pair Analysis and Its Application to Environmental Impact Evaluation of Dam Break

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 821 ◽  
Author(s):  
Meimei Wu ◽  
Wei Ge ◽  
Zongkun Li ◽  
Zening Wu ◽  
Hexiang Zhang ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Impact Evaluation ◽  
Evaluation Model ◽  
Rapid Development ◽  
Dam Break ◽  
Good Effect ◽  
Set Pair Analysis ◽  
Management Measures ◽  
The Index System ◽  
Pair Analysis

Despite the rapid development of risk analysis in dam engineering, there is a relative absence of research on the environmental impact of dam break. As a systematic theory, set pair analysis has a good effect in dealing with uncertainties, although the result is relatively rough and easy to distort. A connection degree of five grades and a generalized set of potential are introduced to improve traditional set pair analysis. Combined with the index system, the evaluation model of the environmental impact of dam break is established, which is based on generalized set pair analysis. Taking Sheheji Reservoir dam as an example, a comparison of evaluation results of fuzzy mathematics theory and generalized set pair analysis is made, which verifies the scientificity and practicability of the method proposed in this paper. The results show that the evaluation grade of the environmental impact of dam break at Sheheji Reservoir is serious, and appropriate management measures should be taken to reduce the risk.

scholarly journals Thermal Analysis of Asphalt Concrete Pavements Heated with Amorphous Metal Technology

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Cesare Sangiorgi ◽  
Cecilia Settimi ◽  
Piergiorgio Tataranni ◽  
Claudio Lantieri ◽  
Solomon Adomako
Keyword(s):  
Amorphous Material ◽  
Concrete Pavements ◽  
Road Maintenance ◽  
Warm Up ◽  
Physical Methods ◽  
The Road ◽  
Road Pavement ◽  
Heating Device ◽  
Critical Issues ◽  
On The Road

Undoubtedly, the most commonly used method for road maintenance includes the use of winter service vehicles to clear thoroughfares of snow and the spraying of chemicals to prevent ice formation on the road surface. The application of these traditional methods on road and airport pavements possesses numerous environmental, organizational, and technical challenges. To overcome these critical issues, new nontraditional technologies that act within the pavement, thereby increasing its temperature, have been developed. In relation to the heat source used, these are classified into chemical and physical methods. The purpose of this research is to study the temperature variation under the thermal transient process produced by the action of the physically heating device installed in the road pavement. The heating device is a ribbon, made of amorphous material, which is able to produce heat to warm up the pavement and its surface. Based on its principle of operation, it is classified among the nontraditional physical methods for the treatment of snow and ice. In this work, the performance of the heating ribbons on an experimental site at the G. Marconi International Airport in Bologna (Italy) is presented.

scholarly journals The Study of How Open Community Based on Combination Weighting Method Influence on Road Capacity

2017 ◽  
Vol 11 (6) ◽  
pp. 15 ◽  
Author(s):  
Zhuhui He ◽  
Rui Liao ◽  
Longlong Wang
Keyword(s):  
Road Network ◽  
Comprehensive Evaluation ◽  
Positive Impact ◽  
Evaluation Model ◽  
Network Connectivity ◽  
Entropy Weight ◽  
Weighting Method ◽  
Linear Coefficient ◽  
The Road ◽  
Road Capacity

The paper studies whether the opening of community can improve the road capacity. First of all, based on the consideration of road space and traffic quality, the evaluation indexes are: road network density, road network connectivity, non-linear coefficient, traffic volume of main road beside community, delay time of intersection, travel time consumption and vehicle accessibility. Secondly, the weight of the index is calculated by the method of relative comparison, the variation coefficient method and the entropy weight method. Then, we sort the three weights, using the correlated coefficient and degree of spearman rank to combine the three weights, so as to get combined weights of various index and achieve the effect which makes good use of the method. Finally, we combine indicators and weights, establish a comprehensive evaluation model, and assess the road capacity before and after the opening of the road. Through the calculation, it is found that the comprehensive evaluation index after the opening of the community is higher than that before the opening, that is, the positive impact on the surrounding roads.

Embedded Computer Performance Evaluation Model Based on Weight Contact Coefficient

2014 ◽  
Vol 951 ◽  
pp. 208-213
Author(s):  
Yong Bin You ◽  
Shan Shan Zhao ◽  
Rui Jun Jing ◽  
Li Yan Liu
Keyword(s):  
Performance Evaluation ◽  
Evaluation Model ◽  
Order Relation ◽  
Optimal Program ◽  
Computer Performance ◽  
Evaluation Indexes ◽  
Embedded Computer ◽  
Performance Evaluation Model ◽  
Analysis Theory ◽  
Pair Analysis

Because the embedded computer performance evaluation indexes are uncertainty, the better method of embedded computer performance evaluation is proposed by applying the set pair analysis theory. First, identical degree, different degree, and contrary degree are respectively determined by the optimal program, intermediate program and worst program, and the weight of performance evaluation indexes are determined by order relation analysis. Finally, the weight contact coefficient is obtained, and the sort of embedded computer performance is determined by situation of weight contact coefficient. The experimental results show that this method can effectively evaluate the embedded computer performance, and the evaluation results are in line with the actual situation.

Sign in / Sign up

Export Citation Format

Share Document