00739768

Component

https://doi.org/10.3141/1568-01

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

It was verified that finite-element modeling could be successfully used to analyze concrete pavements with partial-depth cracks. An existing finite-element program, ILLI-SLAB, was modified (ILSL97) to allow for partial-depth crack analysis. To model a partial-depth crack, a special line spring element was added to the finite-element code. The line spring elements mimic the behavior of a crack by acting as a rotational hinge between two continuous slabs. By using available fracture mechanics techniques, a relationship was derived between the amount of moment load transfer across a crack and the crack depth. This analytical solution was then used to formulate the element stiffness matrix for the line spring element. The deflections predicted by the new finite-element program are correct, but the stresses in the vicinity of the crack tip needed to be corrected to match the stress singularity zone in front of cracks. Several example problems were used to verify the proposed finite-element model, and an example of a typical highway loading condition was analyzed.

This paper appears in Transportation Research Record No. 1568, Pavement Rehabilitation and Design.

English

p. 1-9

1997

Transportation Research Record

0309059747

Figures (9) ; References (29)

Concrete pavements; Cracking; Deflection; Finite element method; Forecasting; Fracture mechanics; Load transfer; Pavement cracking; Pavements; Stresses

Crack depth

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

TRIS, TRB, ATRI

Aug 25 1997 12:00AM

• COMPATIBLE APPROACH TO CONCRETE STRENGTH CHARACTERIZATION IN THE DESIGN AND CONSTRUCTION OF CONCRETE PAVEMENTS
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• DEVELOPMENT OF A ROLLER-COMPACTED CONCRETE PAVEMENT CRACK AND JOINT SPACING MODEL
• EARLY AGE PERFORMANCE OF CONTINUOUSLY REINFORCED CONCRETE PAVEMENT WITH DIFFERENT TYPES OF AGGREGATE
• EFFECT OF NONLINEAR TEMPERATURE GRADIENT ON CURLING STRESS IN CONCRETE PAVEMENTS
• ELASTIC PAVEMENT ANALYSIS USING INFINITE ELEMENTS
• FLEXIBLE PAVEMENT OVERLAYS: THE STATE EXPERIENCE
• FRACTURE MECHANICS IN PAVEMENT ENGINEERING: THE SPECIMEN-SIZE EFFECT
• IMPLEMENTATION FEASIBILITY OF ASPHALT CONCRETE-OVERLAID PORTLAND CEMENT CONCRETE PAVEMENT REHABILITATION GUIDELINES
• IMPROVED METHODOLOGY FOR DEVELOPING A LONG-RANGE PAVEMENT REHABILITATION PROGRAM
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• INNOVATIVE APPROACH TO FATIGUE CRACK PROPAGATION IN CONCRETE PAVEMENTS
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• MODIFIED PORTLAND CEMENT ASSOCIATION STRESS ANALYSIS AND THICKNESS DESIGN PROCEDURES
• NEURAL NETWORK ALGORITHMS FOR THE CORRECTION OF CONCRETE SLAB STRESSES FROM LINEAR ELASTIC LAYERED PROGRAMS
• PERFORMANCE OF A REHABILITATED D-CRACKED JOINTED PLAIN CONCRETE AIRFIELD PAVEMENT
• RELIABILITY DESIGN OF FLEXIBLE AIRFIELD PAVEMENTS: ELASTIC LAYERED METHOD
• SIMPLIFIED PROCEDURE FOR PREDICTION OF ASPHALT PAVEMENT SUBSURFACE TEMPERATURES BASED ON HEAT TRANSFER THEORIES
• STRUCTURAL EVALUATION AND ANALYSIS OF INSTRUMENTED IN-SERVICE CONCRETE PAVEMENTS SUBJECTED TO HEAVY DYNAMIC LOADS
• TECHNIQUES FOR SELECTING PAVEMENT REHABILITATION STRATEGIES: PENNSYLVANIA CASE STUDIES