Modern Pavement Management

1
Modern Pavement Management

• BASIC FEATURES OF WORKING SYSTEMS
• ( Chapter 35 )
• ISTANBUL-2003

2
INTRODUCTION

• The Working System
• Must calculate some type of appropriate cost
  function
• Must order the potential alternative strategies
  in making a final decision

3
INTRODUCTION

• The Decision May Be Relative To
• Design
• Planning
• Programming
• Rehabilitation or Maintenance

4
STRUCTURE OF AVAILABLE PROJECT LEVEL SYSTEM

• Flexible Pavement Design System (FPS)
• The first major working pavement management
  system (Texas Transportation Institute)
• FPS As A Pavement Management System The
  pavement management system involves
• The application of FPS to develop alternative
  choices
• Selection of one of the alternatives by the
  designer
• Preparation of implementation documents (plans,
  etc.)
• Construction of the pavements as planned
• Maintenance of the facility as required
• Collection and analysis of feedback data

5
FPS COMPUTER PROGRAM

• Input Variables
• Program controls - controlling the operation
• Unit costs - economic inputs
• Material properties
• Environmental factor temperature
• Serviceability index values to predict the life
  of an initial design
• Seal coat schedule for each pavement

6
FPS COMPUTER PROGRAM

• Input Variables
• Constraints - controlling
• Traffic demand inputs
• Traffic control inputs
• Miscellaneous group variables

7
PROGRAM WITH MODELS

• Physical Models
• Traffic models amount, type, etc
• Environmental models temperature
• Performance models - PSI

8
PROGRAM WITH MODELS

• Economic Models
• Initial construction cost model
• Seal coat cost model
• Overlay construction cost model
• Routine maintenance model
• Users cost model
• Salvage value model
• Total overall cost model

9
PROGRAM WITH MODELS

• Optimization Models
• Modified branch and bound model
• Minimum total present worth model
• Interaction Models
• Other Subsystems (hardware, organization and
  information subsystems)

10
Ontario Pavement Analysis of Costs (OPAC
Canadian system)

• OPAC Features and Background
• OPAC provides the following methods for FPS
• Fast
• Economical
• Comprehensive
• OPAC gives the following factors analysis
• Traffic
• Environment
• Limits of pavement roughness
• Construction materials

11
Rigid Pavement System (RPS)

• Systems Formulation of RPS
• RPS can be describe by the following terms
• Objectives various models
• Inputs about 115 parameters
• Constraints alternative designs
• Decision criteria
• System analysis Figure 35.7
• Outputs thickness, materials, reinforcements,
  serviceability live, etc.

12
Rigid Pavement System (RPS)

• System Mathematical Models
• The system models are subdivided into the
  categories
• Performance models
• Models for traffic analysis
• Subgrade-effect performance model
• Foundation strength models
• Stochastic variations in the material properties
• Models for overlay design
• Models for reinforcement design
• Economic design
• Miscellaneous

13
System Analysis Method for Pavements (SAMP -1966,
presented in Chapter 37)

• The Highway Design Model (HDM -1970,
  presented in Chapter 38)
• NETWORK LEVEL SYSTEMS EXAMPLES
• Arizona Department of Transportation
• Minnesota Department of Transportation (Minnesota
  DOT -1980, presented in Chapter 36)
• Local Agency Network Systems

14
Local Agency Network Systems

• Some domain systems are
• PAVER Corps of Engineers
• MTC For the San Francisco by Area Metropolitan
  Transportation Commission
• CALTRANS For rigid and flexible pavements
• ITRE For local road networks North Carolina
  Institute