Author: Suresh Venukanthen
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 60
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Book Description
A computerized method has been developed to conduct network optimization analysis. The analysis uses performance models along with life-cycle cost analysis to identify the most effective treatment to be applied for a specific pavement section. Performance models were developed for the most common maintenance treatments: sand and chip seals, and rehabilitation treatments: overlay, roadbed modification, and mill and overlay. The models were developed using actual pavement management data collected on field sections for the past 15 years. The life-cycle cost analysis uses the present worth approach along with actual cost figures for initial and annual construction activities. The individual treatments are used to create alternatives that can provide the acceptable performance level for a given pavement section over the entire analysis period of 20 years. The annual performance of pavement sections is modeled in terms of the present serviceability index (PSI). The most effective treatment alternative is selected based on the highest benefit cost ratio which is defined as the ratio of area under the PSI versus time curve divided by the total cost of the alternative. Once the most effective alternative is selected for each pavement section, a summary of the annual expenditures is provided for the group of pavement sections that have been selected for analysis. The group of projects can be the entire network or a group of pavement sections that have been selected by the engineer.
Author: Shuo Wang
Publisher:
ISBN:
Category :
Languages : en
Pages : 59
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Book Description
Optimal use of pavement maintenance and rehabilitation dollars is essential in a constrained budget environment such as now. A network-level optimization tool, which could generate the best maintenance and rehabilitation strategies for the entire pavement network, has become necessary for many highway agencies. This thesis presents the development and implementation of a network-level optimization tool within a pavement management information system for the Ohio Department of Transportation (ODOT). Future pavement condition is predicted based on historical pavement data using a Markov transition probability model. Such transition probabilities are updated automatically when new condition data become available each year. The network-level optimization tool integrates a linear programming model and the Markov transition probability model. This optimization tool is capable of (1) calculating the minimum budget required to achieve a desired level of pavement network condition, (2) maximizing the improvements of pavement network condition with a given amount of budget, and (3) determining the corresponding optimal treatment policy and budget allocations. It can be used by highway agencies as a decision support tool for network-level pavement management.
Author:
Publisher:
ISBN:
Category : Mathematical optimization
Languages : en
Pages : 204
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Book Description
Author: Fengxian Liu
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 350
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Book Description
Author: Omar Ghaleb Smadi
Publisher:
ISBN:
Category :
Languages : en
Pages : 168
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Book Description
Author: Panos M. Pardalos
Publisher: Springer Science & Business Media
ISBN: 3642591795
Category : Business & Economics
Languages : en
Pages : 495
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Book Description
Network optimization is important in the modeling of problems and processes from such fields as engineering, computer science, operations research, transportation, telecommunication, decision support systems, manufacturing, and airline scheduling. Recent advances in data structures, computer technology, and algorithm development have made it possible to solve classes of network optimization problems that until recently were intractable. The refereed papers in this volume reflect the interdisciplinary efforts of a large group of scientists from academia and industry to model and solve complicated large-scale network optimization problems.
Author: W. Ronald Hudson
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 48
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Book Description
Author: Imad L. Al-Qadi
Publisher: CRC Press
ISBN: 9780415489799
Category : Technology & Engineering
Languages : en
Pages : 924
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Book Description
Internationally, significant attention is given to transport sustainability including planning, design, construction, evaluation, safety and durability of the road system. The 4th International Gulf Conference on Roads: Efficient Transportation and Pavement Systems - Characterization, Mechanisms, Simulation, and Modeling, hosted by the University of Qatar, November 2008, provided a forum for discussions of recent developments and research results and needs on transportation network optimization, traffic management, transportation safety, and pavement design, analysis, material characterization, modeling, and rehabilitation techniques. This book is a collection of 79 fully refereed papers and six keynote lectures from the conference, and includes contributions on a variety of topics: Highway Design and Transportation Planning Transportation Network and Management System Traffic Characteristics and Analysis Traffic and Transit Signal Control Traffic Simulation, Safety, and Management Advances in Road Safety Engineering Road Accident Analysis and Prediction Work Zone Lane Closures and Dynamic Merging Flexible Pavement Design, Analysis, and Evaluation Pavement Maintenance and Management Binder and Emulsion Characterization - Effect of Binder, Modified Binder, and Fillers on HMA HMA Testing and Properties Foamed and HMA Recycling Impact of Geogrids on Pavement Performance Research, Development, and Standardizations Case Studies
Author: Ralph Haas
Publisher: John Wiley & Sons
ISBN: 1119038820
Category : Technology & Engineering
Languages : en
Pages : 432
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Book Description
Comprehensive and practical, Pavement Asset Management provides an essential resource for educators, students and those in public agencies and consultancies who are directly responsible for managing road and airport pavements. The book is comprehensive in the integration of activities that go into having safe and cost-effective pavements using the best technologies and management processes available. This is accomplished in seven major parts, and 42 component chapters, ranging from the evolution of pavement management to date requirements to determining needs and priority programming of rehabilitation and maintenance, followed by structural design and economic analysis, implementation of pavement management systems, basic features of working systems and finally by a part on looking ahead. The most current methodologies and practical applications of managing pavements are described in this one-of-a-kind book. Real world up-to-date examples are provided, as well as an extensive list of references for each part.
Author: A. Kitaha
Publisher:
ISBN:
Category : Budgetary allocation
Languages : en
Pages : 18
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Book Description
A common practice followed to rate the pavement surface condition is to use the ASTM D5340-12 procedure and estimate the pavement condition index (PCI) that helps prioritize maintenance needs and assists developing a pavement management system (PMS). However, ASTM-PCI that is dependent on time-based evaluation may not be suitable where there is a lack of historical records and it is being undertaken for the first time. To estimate a pavement's current PCI during the non-availability of historical data and establish a PMS incorporated with prioritized maintenance and optimized budget, a rational engineering criteria (EC) based methodological approach is required that is as robust as ASTM D5340-12. Thus, the objective of this study was to develop a rational EC-based prioritization-optimization process PMS (POPMS) algorithm for a network that prioritizes maintenance strategies for identified pavement distresses and hence optimizes maintenance costs depending on budgetary allocations. An EC-based POPMS algorithm was based on a network length of 100.55 km, which followed prioritization-optimization process for single to multi-year programs. EC-PCI of pavement sections were estimated on the basis of segmented maintenance strategies including preventive and routine maintenance and reconstruction. EC-PCI was found to be rational since three distinct threshold zones were considered that could directly assign pavement maintenance strategies, which was straightforward and circularly referenced. Overall, POPMS algorithm facilitates practitioners to modify the threshold EC-based parameters that will estimate an optimal single/multiyear budget for maintenance as per the newly set threshold level, thus creating a whole new promising approach in the areas of roadway network level maintenance programs.
