00741875

Component

https://doi.org/10.3141/1570-19

http://scholar.google.com...neva&publication_year=1997

The importance of developing a deep understanding of the behavior of pavement layers under the action of dynamic loads, and the availability of cutting-edge computational and visualization technologies, led to the study presented in this paper. Explicit finite-element analysis was used to investigate the propagation of dynamic displacements induced in pavement layers under the action of an impact load similar to the one applied in a falling weight deflectometer test. The time-dependent dynamic response of a rigid pavement with straight asphalt concrete overlay was studied for two cases of unbonded and fully bonded interfaces between different layers. Significant differences in behavior were observed. Three-dimensional computer graphics and animation of the deformed model were used to display the propagation of vertical dynamic displacements through pavement layers. It was found that in the absence of a perfect bond between all pavement layers, the displacements measured on the top surface correlated little with the deformation measured in subsequent layers. In this case, a complicated pattern of behavior took place between the asphalt overlay and the concrete. The time histories of vertical displacements at selected surface locations and on the top and bottom of every layer were plotted. The plots revealed the existence of time shifts between the maximum displacements experienced by each layer, irrespective of the type of bond assumed between the interfaces.

This paper appears in Transportation Research Record No. 1570, Pavement Research Issues.

English

p. 163-171

1997

Transportation Research Record

0309061539

Figures (10) ; References (20) ; Tables (2)

Bituminous overlays; Composite pavements; Computer animation; Computer graphics; Concrete pavements; Dislocation (Geology); Dynamic tests; Mathematical models; Time periods

Dynamic analysis; Time history; Vertical displacement

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

TRIS, TRB, ATRI

Oct 2 1997 12:00AM

• ANALYSIS OF LTPP PROFILE DATA FOR JOINTED CONCRETE PAVEMENT SECTIONS
• BACKCALCULATION ANALYSIS OF PAVEMENT-LAYER MODULI USING GENETIC ALGORITHMS
• CRACK DEVELOPMENT IN LINEAR TRACKING TEST PAVEMENTS FROM VISUAL SURVEY TO PIXEL ANALYSIS
• DETECTION AND MONITORING OF CRACKS IN ASPHALT PAVEMENT UNDER TEXAS MOBILE LOAD SIMULATOR TESTING
• DEVELOPMENT OF PROTOTYPE VIDEO-BASED SENSOR FOR VEHICLE DETECTION FROM STAND-STILL IMAGES
• DIPLOBACK: NEURAL-NETWORK-BASED BACKCALCULATION PROGRAM FOR COMPOSITE PAVEMENTS
• EFFECT OF INITIAL PAVEMENT SMOOTHNESS ON FUTURE SMOOTHNESS AND PAVEMENT LIFE
• EFFECT OF VEHICLE-PAVEMENT INTERACTION ON PAVEMENT RESPONSE
• EVALUATION OF FATIGUE CRACKING
• EVASION OF WEIGHT-ENFORCEMENT STATIONS BY TRUCKS
• INVESTIGATION OF BACKCALCULATED MODULI USING DEFLECTIONS OBTAINED AT VARIOUS LOCATIONS IN A PAVEMENT STRUCTURE
• LINEAR TRACKING PERFORMANCE TESTS ON FULL-DEPTH ASPHALT PAVEMENT
• LINEAR TRACKING RESPONSE MEASUREMENTS: DETERMINING EFFECTS OF WHEEL-LOAD CONFIGURATIONS
• MALFUNCTION DETECTION AND DATA REPAIR FOR INDUCTION-LOOP SENSORS USING I-880 DATA BASE
• MONTANA'S AUTOMATED DEFLECTION ANALYSIS PROCEDURE
• PRIMARY RESULTS FOR THE FIRST TEXAS MOBILE LOAD SIMULATOR TEST PAD
• ROADWAY-VEHICLE INTERACTION, PHYSICAL INDEXES, AND HUMAN JUDGMENT OF RIDE QUALITY
• RUTTING DEVELOPMENT IN LINEAR TRACKING TEST PAVEMENTS TO EVALUATE SHELL SUBGRADE STRAIN CRITERION
• SINGLE-MEASUREMENT ESTIMATION OF IN SITU ASPHALT-LAYER MODULI WITH PORTABLE FALLING WEIGHT DEFLECTOMETER
• TEMPERATURE CORRECTION OF BACKCALCULATED MODULI AND DEFLECTIONS USING LINEAR VISCOELASTICITY AND TIME-TEMPERATURE SUPERPOSITION
• USING ARTIFICIAL NEURAL NETWORKS AS A FORWARD APPROACH TO BACKCALCULATION
• USING GEOGRAPHIC INFORMATION SYSTEM TECHNOLOGY TO SYNTHESIZE CENSUS AREAWIDE AND LINEAR HIGHWAY DATA FOR LOCATION OF WEIGH-IN-MOTION SITES