00968518

Component

https://doi.org/10.3141/1860-13

http://scholar.google.com...eidy&publication_year=2003

Most load-zoned roads in Texas are still posted with a gross vehicle weight limit of about 260 kN, corresponding to the legal load limit at the time these roads were designed and built. Since the load from a vehicle is transmitted to the pavement through its axles, establishing load limits based on axle load and axle configuration is a more rational approach than the one currently used. In recognition of the need for a better methodology of load-zoning pavements, the Texas Department of Transportation funded a project to develop a procedure for evaluating load restrictions on the basis of axle load and axle configuration. Research efforts conducted at the Texas Transportation Institute led to the development of the Program for Load-Zoning Analysis (PLZA), which pavement engineers may use to evaluate the need for load restrictions and to determine, as appropriate, the single- and tandem-axle load limits based on a user-prescribed reliability level. To predict the induced pavement response under surface wheel loads, PLZA uses a layered elastic pavement model that permits users to characterize pavement materials as linear or nonlinear. The predicted horizontal strain at the bottom of the asphalt layer and the vertical strain at the top of the subgrade are used to evaluate pavement performance. To combine the effects of different axle loads and axle configurations, PLZA uses Miner's hypothesis of cumulative damage to predict service life and the probability of pavement failure within a prescribed analysis period. The methodology for load-zoning is described, and its application using data collected on in-service pavements is demonstrated.

This paper appears in Transportation Research Record No. 1860, Pavement Assessment, Monitoring, and Evaluation 2003.

English

p. 117-125

2003

Transportation Research Record

0309085977

Figures (5) ; References (17) ; Tables (3)

Axle load force; Load limits

PLZA (Computer program)

Axle configurations; Load zoning

Texas

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Jan 8 2004 12:00AM

• ACCEPTABILITY OF PAVEMENT ROUGHNESS ON URBAN HIGHWAYS BY DRIVING PUBLIC
• APPLICATION OF WAVELETS IN DETECTION OF CAVITIES UNDER PAVEMENTS BY SURFACE WAVES
• APPROACHES TO EVALUATION OF PROFILER ACCURACY
• COHEN'S WEIGHTED KAPPA STATISTIC IN QUALITY CONTROL-QUALITY ASSURANCE PROCEDURES: APPLICATION TO NETWORK-LEVEL CONTRACT PAVEMENT SURFACE CONDITION SURVEYS IN BRITISH COLUMBIA, CANADA
• CURRENT PRACTICE OF PORTLAND CEMENT CONCRETE PAVEMENT TEXTURING
• DETECTION OF NONRESILIENT BEHAVIOR IN PAVEMENTS WITH A FALLING-WEIGHT DEFLECTOMETER
• DIRECT METHOD FOR EVALUATING STRUCTURAL NEEDS OF FLEXIBLE PAVEMENTS WITH FALLING-WEIGHT DEFLECTOMETER DEFLECTIONS
• DISCRETE AND CONTINUOUS DEFLECTION TESTING OF RUNWAYS AT HARTSFIELD ATLANTA INTERNATIONAL AIRPORT, GEORGIA
• FEASIBILITY OF BACKCALCULATION OF NONLINEAR FLEXIBLE PAVEMENT LAYER PARAMETERS FROM NONDESTRUCTIVE TESTING
• FRICTION TESTING METHOD FOR OPEN-GRATED STEEL BRIDGE DECKS
• IMPLEMENTATION OF AUTOMATED NETWORK-LEVEL CRACK DETECTION PROCESSES IN MARYLAND
• IMPLEMENTATION OF NEW RIDE QUALITY SPECIFICATION IN MARYLAND: INCENTIVE-BASED PROFILE SPECIFICATION
• MODELING STRESS- AND MOISTURE-INDUCED VARIATIONS IN PAVEMENT LAYER MODULI
• NETWORK PAVEMENT EVALUATION WITH FALLING-WEIGHT DEFLECTOMETER AND GROUND-PENETRATING RADAR
• PAVEMENT SURFACE MACROTEXTURE MEASUREMENT AND APPLICATIONS
• PREDICTION OF REMAINING LIFE OF ASPHALT PAVEMENT WITH FALLING-WEIGHT DEFLECTOMETER MULTILOAD-LEVEL DEFLECTIONS
• SMOOTH ENOUGH? ESTIMATED ROUGHNESS ON ROADS WITH LOW INTERNATIONAL ROUGHNESS INDEX VALUES
• USING THE ASPHALT PAVEMENT LAYER CONDITION ASSESSMENT PROGRAM: CASE STUDIES
• VARIATION OF PAVEMENT SMOOTHNESS BETWEEN ADJACENT LANES: IMPLICATIONS FOR PERFORMANCE-BASED CONTRACTING
• VISCOELASTIC, VISCOPLASTIC, AND DAMAGE MODELING OF ASPHALT CONCRETE IN UNCONFINED COMPRESSION