scholarly journals AN INTEGRATED MULTI-OBJECTIVES OPTIMIZATION APPROACH ON MODELLING PAVEMENT MAINTENANCE STRATEGIES FOR PAVEMENT SUSTAINABILITY

2020 ◽  
Vol 26 (8) ◽  
pp. 717-732
Author(s):  
Ankang Ji ◽  
Xiaolong Xue ◽  
Yuna Wang ◽  
Xiaowei Luo ◽  
Minggong Zhang
Keyword(s):  
Integrated Approach ◽  
Maintenance Cost ◽  
First Year ◽  
Optimization Approach ◽  
Maintenance Strategies ◽  
Pavement Condition ◽  
Pavement Maintenance ◽  
Road Pavement ◽  
Maintenance Activities

Addressing the multi-dimensional challenges to promote pavement sustainability requires the development of an optimization approach by simultaneously taking into account future pavement conditions for pavement maintenance with the capability to search and determine optimal pavement maintenance strategies. Thus, this research presents an integrated approach based on the Markov chain and Particle swarm optimization algorithm which aims to consider the predicted pavement condition and optimize the pavement maintenance strategies during operation when applied in the maintenance management of a road pavement section. A case study is conducted for testing the capability of the proposed integrated approach based on two maintenance perspectives. For case 1, maintenance activities mainly occur in TM20, TM31, and TM41, with the maximum maintenance mileage reaching 88.49 miles, 50.89 miles, and 20.91 miles, respectively. For case 2, the largest annual maintenance cost in the first year is $15.16 million with four types of maintenance activities. Thereafter, the maintenance activities are performed at TM10, TM31, and TM41, respectively. The results obtained, compared with the linear program, show the integrated approach is effective and reliable for determining the maintenance strategy that can be employed to promote pavement sustainability.

Assessing Impact of Bus Traffic on Pavement Maintenance Costs: City of Los Angeles

2003 ◽  
Vol 1853 (1) ◽  
pp. 29-36
Author(s):  
M. Y. Shahin ◽  
James A. Crovetti ◽  
Kurt A. Keifer
Keyword(s):  
Los Angeles ◽  
State Of The Art ◽  
Maintenance Cost ◽  
Maintenance Costs ◽  
Pavement Condition ◽  
Pavement Maintenance ◽  
The Impact ◽  
The City ◽  
Evaluation Techniques

Engineers for the city of Los Angeles have observed that lanes carrying Mass Transit Authority (MTA) bus traffic deteriorate at a faster rate than similar lanes without bus traffic. The increased rate of deterioration results in greater maintenance costs in these lanes. To properly apportion the increased maintenance costs, city engineers need an objective method for quantifying the impact of MTA bus traffic. Multiple evaluation techniques are presented that may be used to quantify the effect of buses in terms of increased deterioration rates and greater rehabilitation costs. State-of-the-art techniques that use the results of deflection testing and pavement condition surveys are presented. Data collection procedures, methods for condition and structural analyses, and life-cycle costing procedures are provided. A case study that uses data collected from the city is presented. This study indicates an average yearly additional maintenance cost of $800 per lane-mile caused by MTA bus traffic, excluding associated costs for curb and gutter or maintenance hole adjustments.

scholarly journals Pavement Deterioration Rate and Maintenance Cost for Low-Volume Roads

2020 ◽  
Vol 312 ◽  
pp. 06002
Author(s):  
Turki I Al-Suleiman ◽  
Subhi M Bazlamit ◽  
Mahmoud Azzama ◽  
Hesham S Ahmad
Keyword(s):  
Surface Defects ◽  
Condition Index ◽  
Maintenance Cost ◽  
Pavement Condition ◽  
Pavement Maintenance ◽  
Deterioration Rate ◽  
Pavement Deterioration ◽  
Pavement Condition Index ◽  
Traffic Volumes ◽  
Over Time

Allocated budgets for maintenance of road networks are normally limited. Therefore, not all roads receive the required attention they deserve in a timely manner. These roads are left to deteriorate until the next maintenance round. The cost associated with delayed maintenance is significantly excessive. A Pavement Maintenance Management System (PMMS) can be a useful tool for evaluation, prioritization of Maintenance and Rehabilitation (M&R) projects, and determination of funding requirements and allocations. The pavement condition is normally indexed using a parameter called Pavement Condition Index (PCI) which represents an overall assessment of surface defects by type, severity and extent. Periodic collections of PCI over time for different sections within the roadway network provide an approach to monitor changes in pavement serviceability over time and can produce useful data to predict and evaluate required maintenance solutions and their associated cost. The researchers intend to use available data collected over the span of a year and a half on sections within the roadway network at the campus of Al-Zaytoonah University of Jordan (ZUJ) to study the relation between the maintenance cost and the pavement deterioration rate. This study may incorporate variables such as pavement age, traffic volumes, maintenance history and pavement condition assessment results. The available records of PCI will be analyzed and the findings will be clearly presented. The practical inclusion of the findings within the current PMMS used at the university will also be detailed.

Maintenance Strategy Development Within SME’s: The Development of an Integrated Approach

2007 ◽  
Author(s):  
David Baglee ◽  
Robert Trimble ◽  
John MacIntyre
Keyword(s):  
Implementation Process ◽  
Monitoring And Evaluation ◽  
Integrated Approach ◽  
Maintenance Management ◽  
Strategy Development ◽  
Maintenance Strategies ◽  
High Productivity ◽  
Maintenance Decisions ◽  
System Maintenance

The importance of maintenance has increased, as high productivity and quality can be achieved by means of well-developed and organised maintenance strategies. However, this assumes that maintenance is controlled in such a way that equipment is stopped for maintenance via a systematic schedule. With the recent advances in technology many methodologies, tools, techniques and strategies have been developed and tested. Unfortunately, the majority of organisations are constrained by certain barriers with the resulting loss of major benefits. These are usually classified as Small and Medium Sized Enterprises (SMEs). Based upon our data analysis a new maintenance methodology, the Advanced Integrated Maintenance Management System (AIMMS) is developed. To enable the implementation, monitoring and evaluation of AIMMS a computerised system — Maintenance Management (MainMan) — was developed and implemented within several case study companies. This paper examines the implementation process within one of these companies. The results indicate that AIMMS supports strategic maintenance decisions, and helps to increase equipment effectiveness through prioritising equipment criticality and focusing on specific resources that will maximise gains based upon a return on investment.

Airline maintenance strategies – in-house vs. outsourced – an optimization approach

2016 ◽  
Vol 22 (2) ◽  
pp. 114-129 ◽  
Author(s):  
Massoud Bazargan
Keyword(s):  
Design Methodology ◽  
Maintenance Cost ◽  
Optimization Approach ◽  
Planning Period ◽  
Maintenance Strategies ◽  
Content Type ◽  
Total Cost ◽  
Side Constraints ◽  
Cost Breakdown ◽  
Airline Maintenance

Purpose – The purpose of this paper is to offer a new mathematical modeling approach to help airlines identify which types of heavy aircraft maintenance checks be performed in-house or outsourced. Design/methodology/approach – This study offers a mathematical model to minimize the total cost of heavy maintenance programs over a planning period subject to performing all maintenance programs on time and other side constraints. Findings – The results are very encouraging and somewhat counter-intuitive. The solutions recommend that more expensive and labor intensive checks be outsourced. A detailed analyses of the total maintenance cost breakdown is presented with implications and recommendation. Originality/value – To the best of the knowledge, the literature on quantitative models for airline in-house and outsourced maintenance checks is very limited. The author believes the model and airline cases presented in this paper can help airlines with their strategic maintenance strategies and will initiate further studies in this important area.

scholarly journals Comparison of Fuzzy AHP and Fuzzy TOPSIS for Road Pavement Maintenance Prioritization: Methodological Exposition and Case Study

2015 ◽  
Vol 2015 ◽  
pp. 1-17 ◽  
Author(s):  
Yashon O. Ouma ◽  
J. Opudo ◽  
S. Nyambenya
Keyword(s):  
Fuzzy Ahp ◽  
Pairwise Comparison ◽  
Fuzzy Topsis ◽  
Subjective Analysis ◽  
Pavement Maintenance ◽  
Pavement Distress ◽  
Road Pavement ◽  
Study Results ◽  
Order Preference

For road pavement maintenance and repairs prioritization, a multiattribute approach that compares fuzzy Analytical Hierarchy Process (AHP) and fuzzy Technique for Order Preference by Ideal Situation (TOPSIS) is evaluated. The pavement distress data was collected through empirical condition surveys and rating by pavement experts. In comparison to the crisp AHP, the fuzzy AHP and fuzzy TOPSIS pairwise comparison techniques are considered to be more suitable for the subjective analysis of the pavement conditions for automated maintenance prioritization. From the case study results, four pavement maintenance objectives were determined as road safety, pavement surface preservation, road operational status and standards, and road aesthetics, with corresponding depreciating significance weights ofW=0.37,0.31,0.22,0.10T. The top three maintenance functions were identified as Thin Hot Mix Asphalt (HMA) overlays, resurfacing and slurry seals, which were a result of pavement cracking, potholes, raveling, and patching, while the bottom three were cape seal, micro surfacing, and fog seal. The two methods gave nearly the same prioritization ranking. In general, the fuzzy AHP approach tended to overestimate the maintenance prioritization ranking as compared to the fuzzy TOPSIS.

scholarly journals Improvement of road pavement maintenance models and technologies

2016 ◽  
Vol 11 (3) ◽  
pp. 242-249 ◽  
Author(s):  
Audrius Vaitkus ◽  
Donatas Čygas ◽  
Algirdas Motiejūnas ◽  
Algis Pakalnis ◽  
Dainius Miškinis
Keyword(s):  
Traffic Safety ◽  
Performance Indicators ◽  
Road Maintenance ◽  
Pavement Condition ◽  
Pavement Maintenance ◽  
Road Pavement ◽  
Condition Evaluation ◽  
High Level ◽  
Ongoing Support ◽  
Whole Life Cycle

The roads as main national assets maintenance costs increase dramatically but budgets stays as it is or even decrease over the years. However, at the same time, it is required to maintain road pavements condition at high level. These trends make asset owners and administrators to search for new ways and methods for more efficient roads maintenance management. As the new road is build or old one reconstructed performance indicators should be identified for whole life cycle as it is defined by design. Pavement condition evaluation by indicating present performance indicators level should be done timely and accurate at road level and whole network level. Ongoing support of pavement condition under network level, with a long-term strategy, allows to prolong the life of the pavement, improve traffic safety and meet public expectations. The comprehensive analysis of road maintenance and management systems recommendations for their improvement and application are presented in the article.

scholarly journals Maintenance Optimization for Repairable Deteriorating Systems under Imperfect Preventive Maintenance

Mathematics ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 716
Author(s):  
Juhyun Lee ◽  
Byunghoon Kim ◽  
Suneung Ahn
Keyword(s):  
System Reliability ◽  
Preventive Maintenance ◽  
Cost Effective ◽  
Optimal Number ◽  
Sensitivity Analyses ◽  
Maintenance Cost ◽  
Maintenance Optimization ◽  
Maintenance Strategies ◽  
Cost Rate ◽  
Maintenance Activities

This study deals with the preventive maintenance optimization problem based on a reliability threshold. The conditional reliability threshold is used instead of the system reliability threshold. Then, the difference between the two thresholds is discussed. The hybrid failure rate model is employed to represent the effect of imperfect preventive maintenance activities. Two maintenance strategies are proposed under two types of reliability constraints. These constraints are set to consider the cost-effective maintenance strategy and to evaluate the balancing point between the expected total maintenance cost rate and the system reliability. The objective of the proposed maintenance strategies is to determine the optimal conditional reliability threshold together with the optimal number of preventive maintenance activities that minimize the expected total maintenance cost per unit time. The optimality conditions of the proposed maintenance strategies are also investigated and shown via four propositions. A numerical example is provided to illustrate the proposed preventive maintenance strategies. Some sensitivity analyses are also conducted to investigate how the parameters of the proposed model affect the optimality of preventive maintenance strategies.

scholarly journals An Evolving Teaching Methodology: An Integrated Approach To Teaching Multi-Disciplinary Classes

2011 ◽  
Vol 1 (3) ◽  
pp. 9
Author(s):  
Craig Baird ◽  
Kerry Pedigo
Keyword(s):  
Western Australia ◽  
Business School ◽  
Teaching And Learning ◽  
Academic Staff ◽  
Integrated Approach ◽  
First Year ◽  
Teaching Methodology ◽  
Central Case ◽  
Approach To Teaching

This paper discusses an approach to teaching and learning in multi-disciplinary university settings using case study based scenarios presented using films as a key teaching methodology. The production of four films (The Video store, Perception Airlines, Tranquil Whispers, and Middleton) over an eight year period was an iterative process through which the use of film-based case study scenarios was refined as a teaching tool to integrate student learning across multiple disciplines in a business school. Each of the four films was designed to enhance first year university students understanding of theories and practices used in a range of discipline areas that underpin the operations of a commercial business undertaking. The final film mainly discussed here depicts a central case study scenario, entitled Middleton featuring a cast of teaching and academic staff from the Curtin Business School (CBS) in Perth, Western Australia and Curtin Sarawak, Malaysia(Curtin University of Technology). It was produced as a core teaching approach for exploring themes as part of the delivery of several first year units within the CBS, delivered over twelve campuses in Western Australia and South East Asia (Singapore, Malaysia, Hong Kong, Sri Lanka). Students in their first year of a commerce degree study compulsory business units that are disparate in their content and delivery. This diversity can cause some students to have difficulty with defining meaningful cohesiveness between units in their first year of study. Middleton sought to integrate the first year subjects into a film depicting a central case study of an international business operation.

Sign in / Sign up

Export Citation Format

Share Document