00941394

Component

http://onlinepubs.trb.org...nepubs/circulars/ec049.pdf

A probabilistic framework forecasting the lifetime safety and serviceability of a network of highway bridges located along U.S. Highway 36 in Colorado is presented. In addition to performing a live load rating analysis for each bridge, performance functions defining the failure conditions for superstructure components are derived, in terms of both the ultimate strength and the serviceability limit states, using load and capacity requirements defined by AASHTO specifications. The performance functions are established by grouping the random variables and constant parameters in such a way that the formulas are applicable to any type of bridge having similar superstructure components. Thus, the developed performance functions are applicable to other similar bridges, which creates the possibility of evaluating a larger number of bridges in a wider network area, such as a transportation region within the state of Colorado. Using the developed performance functions, initial reliability indices have been determined for the components of the selected highway bridges. By defining the potential failure of the superstructure through a system model, a system reliability index is calculated for each bridge. Resulting component and system reliability indices are compared with the corresponding load ratings of the bridges. A time-varying truckload model and a material degradation model are used to determine the reliability indices of each bridge component and system over the bridge's lifetime. Both safety and serviceability of each bridge are observed over its lifetime based on the predicted load increase and strength reduction. The resulting reliability profiles form the basis for a network-level management planning study for a group of similar bridges that is based on structural reliability.

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E-C049,
IBMC03-036
IBMC03-041

English

p. 323-334

2003-4

Transportation Research Circular

9th International Bridge Management Conference

Figures (7) ; Photos (2) ; References (17) ; Tables (1)

Bridge superstructures; Forecasting; Highway bridges; Live loads; Load factor; Safety; Serviceability; Ultimate strength

Bridge management; Reliability indices; Structural reliability

Colorado

Bridges and other structures; Design; Highways; Safety and Human Factors; I24: Design of Bridges and Retaining Walls

TRIS, TRB

Apr 21 2003 12:00AM

• ADDRESSING UNCERTAINTIES IN BRIDGE MANAGEMENT WITH INFLUENCE DIAGRAMS
• ASSESSING THE SAFETY AND SERVICEABILITY OF EXISTING HIGHWAY STRUCTURES
• ASSET NEEDS FROM THE BOTTOM UP
• BRIDGE EXPERT ANALYSIS AND DECISION SUPPORT SYSTEM
• BRIDGE MANAGEMENT SYSTEM FOR CITY OF MOSCOW
• BRIDGE MANAGEMENT THROUGH THE INTERNET WITH DANBROWEB
• BRIDGE TESTING TO ENHANCE BRIDGE MANAGEMENT IN DELAWARE
• CONDITION-BASED BRIDGE ASSET VALUATION
• CUSTOMIZATION OF THE PONTIS BRIDGE MANAGEMENT SYSTEM FOR A TRANSIT AGENCY
• DETERMINATION OF BRIDGE DETERIORATION MATRICES WITH STATE NATIONAL BRIDGE INVENTORY DATA
• ECONOMETRIC MODEL FOR PREDICTING DETERIORATION OF BRIDGE DECK EXPANSION JOINTS
• FLORIDA PROJECT-LEVEL MODELS FOR PONTIS
• IMPLEMENTATION OF ONTARIO BRIDGE MANAGEMENT SYSTEM
• INTEGRATION OF AASHTO'S BRIDGEWARE PRODUCTS
• LIFE-CYCLE COST APPROACH TO BRIDGE MANAGEMENT IN THE NETHERLANDS
• LIFE-CYCLE MANAGEMENT OF CONCRETE INFRASTRUCTURES FOR IMPROVED SUSTAINABILITY
• MAINTENANCE STRATEGY TO MINIMIZE BRIDGE LIFE-CYCLE COSTS
• METHODOLOGY FOR PREDICTION OF CONDITION OF CONCRETE BRIDGE DECKS AT NETWORK LEVEL
• MONITORING AND PLANS FOR ACTION FOR BRIDGE SCOUR: INSTRUMENTS AND STATE DEPARTMENTS OF TRANSPORTATION EXPERIENCES
• NEW BRIDGE PERFORMANCE MEASURES FOR PRIORITIZING BRIDGES
• PERFORMANCE-BASED PROGRAMMING OF BRIDGES IN NEW JERSEY
• PHYSICAL MODELING OF SCOUR IN BRIDGE MANAGEMENT
• PONTIS BRIDGE MANAGEMENT SYSTEM: STATE OF THE PRACTICE IN IMPLEMENTATION AND DEVELOPMENT
• PONTIS-BASED HEALTH INDEXES FOR BRIDGE PRIORITY EVALUATION
• PREDICTION OF DETERIORATION: START APPLICATION OF DEICING AGENT TAKEN INTO ACCOUNT
• STATEWIDE IMPLEMENTATION OF A BRIDGE MANAGEMENT SYSTEM AS PART OF INTEGRATED ASSET MANAGEMENT IN KENTUCKY
• STRUCTURAL PATCH REPAIR OF CONCRETE STRUCTURES: TOWARD THE DEVELOPMENT OF A RISK-BASED IMPLEMENTATION PROCEDURE
• SUPPLY AND DEMAND SYSTEM APPROACH TO DEVELOPING BRIDGE MANAGEMENT STRATEGIES: COMPARISON WITH TWO EXISTING APPROACHES
• SYNCHRONIZING AN AGENCY'S BRIDGE INFORMATION BETWEEN MULTIPLE VENDOR SYSTEMS: KANSAS DEPARTMENT OF TRANSPORTATION APPROACH
• SYNTHESIS OF ELEMENT CONDITION DATA FOR AGGREGATE ANALYSES IN BRIDGE MANAGEMENT SYSTEMS
• SYSTEM RELIABILITY MODELING IN BRIDGE MANAGEMENT
• TISBO INFRASTRUCTURE MAINTENANCE MANAGEMENT SYSTEM: INTEGRATING INSPECTION REGISTRATION AND MAINTENANCE MANAGEMENT
• UPDATING TIME-DEPENDENT RELIABILITY OF HIGHWAY BRIDGES WITH PONTIS BRIDGE MANAGEMENT SYSTEM INSPECTION RESULTS
• WEB-BASED BRIDGE MANAGEMENT SYSTEM