ANALYSIS OF JOINTED CONCRETE PAVEMENTS. INTERIM REPORT

A computer program for analysis of jointed concrete pavement is presented. The program, denoted as JSLAB, can analyze concrete pavement sections consisting of up to nine slabs. The program can analyze a one- or two-layer pavement system resting on a Winkler (liquid) foundation. The two layers may be unbonded or fully bonded. Joints may be modeled as doweled, aggregate interlock, or keyed. Load input is in terms of wheel loads at any location on the slabs, or as nodal loads or nodal displacement. Loss of support and variable support or material properties can be considered. Also, the program can analyze curling behavior due to linear temperature variation in the slab, and can be used to determine curling restraint stresses. The primary objective for developing program JSLAB was to evaluate behavior of joints and load transfer devices. It can be used to evaluate the effect of joints with non-uniformly spaced load transfer devices. However, the applicability of the program is broad and the program may be used as a basis for or to verify concrete pavement designs.