00803891

Component

https://doi.org/10.3141/1730-07

http://scholar.google.com...CKEL&publication_year=2000

A two-dimensional finite element code, PAVE2D, is used to model a concrete block pavement as a solid of revolution. However, use of this approach in its normal form poses a difficulty--the relatively stiff elements near the axis of revolution cannot rotate. It is proposed that the stiffness of these elements be modified to allow some degree of rotation that would still give a reasonable state of stress. This is done by determining a ratio of the modulus of a flat circular plate and that of a straight beam of equal span and thickness that would give an equal rotation along the entire span. This ratio is used to reduce the modulus of the elements representing the concrete blocks according to their proximity from the axis of revolution. PAVE2D is a large deformation capable code that has an updated Lagrangian formulation. The proposed method has an advantage over the traditional three-dimensional finite element analysis because it accommodates stress-related nonlinearity and geometric nonlinearity, and it is capable of simulating loading and unloading without huge computing resource requirements. The computer simulations shown include modeling a field test in which a 70-mm-thick block pavement was subjected to loading from a falling weight deflectometer and modeling block pavements 80 mm and 120 mm thick subjected to repeated loading. The proposed method can be used to evaluate different block shapes and arrangements and can be used to predict rutting characteristics of these pavements. The method applies to rigid pavement.

This paper appears in Transportation Research Record No. 1730, Issues in Pavement Design and Rehabilitation.

English

p. 53-63

2000

Transportation Research Record

0309067324

Figures (17) ; References (15) ; Tables (3)

Computer models; Concrete blocks; Concrete pavements; Falling weight deflectometers; Finite element method; Mathematical prediction; Precast concrete pavements; Repeated loads; Rotation; Rutting; Shape; Stiffness; Stresses; Thickness

Nonlinearity; Two dimensional analysis

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

TRIS, TRB, ATRI

Dec 13 2001 12:00AM

• ANALYSIS BY HIGH-SPEED PROFILE OF JOINTED CONCRETE PAVEMENT SLAB CURVATURES
• ANALYTICAL PREDICTIONS OF SEASONAL VARIATIONS IN FLEXIBLE PAVEMENTS: MINNESOTA ROAD RESEARCH PROJECT SITE
• CONSTRUCTION AND PERFORMANCE OF FLY ASH-STABILIZED COLD IN-PLACE RECYCLED ASPHALT PAVEMENT IN WISCONSIN
• COST-EFFECTIVENESS OF PAVING FABRICS USED TO CONTROL REFLECTIVE CRACKING
• EVALUATION OF CONCRETE PAVEMENT REHABILITATION TECHNIQUES ON I-65 IN INDIANA
• EVALUATION OF PROBABILITY DISTRIBUTION FUNCTION FOR THE LIFE OF PAVEMENT STRUCTURES
• FOUNDATION MODELING FOR JOINTED CONCRETE PAVEMENTS
• FRACTURE ENERGY TEST FOR HIGHWAY CONCRETE: DETERMINING THE EFFECT OF COARSE AGGREGATE ON CRACK PROPAGATION RESISTANCE
• IMPACT OF CHANGING TRAFFIC CHARACTERISTICS AND ENVIRONMENTAL CONDITIONS ON FLEXIBLE PAVEMENTS
• INCORPORATION OF RELIABILITY INTO MECHANISTIC-EMPIRICAL PAVEMENT DESIGN
• LOAD AND DISPLACEMENT PREDICTION FOR SHAKEDOWN ANALYSIS OF LAYERED PAVEMENTS
• MECHANISTIC DESIGN FRAMEWORK FOR SPALLING DISTRESS
• MECHANISTIC DESIGN OF THIN WHITETOPPING PAVEMENTS IN COLORADO
• MECHANISTIC-EMPIRICAL APPROACH FOR MODELING REFLECTION CRACKING
• MECHANISTIC-EMPIRICAL RUT PREDICTION MODEL FOR IN-SERVICE PAVEMENTS
• PAVEMENT REHABILITATION SELECTION BASED ON MECHANISTIC ANALYSIS AND FIELD DIAGNOSIS OF FALLING WEIGHT DEFLECTOMETER DATA: VIRGINIA EXPERIENCE
• RUBBLIZATION OF CONCRETE PAVEMENTS: FIELD INVESTIGATION
• TEMPERATURE GRADIENT OF CONCRETE PAVEMENT SLAB OVERLAID WITH ASPHALT SURFACE COURSE
• THREE-DIMENSIONAL ANALYSIS OF CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS
• TOP-DOWN CRACKING IN WASHINGTON STATE ASPHALT CONCRETE WEARING COURSES