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The stiffness matrix of a parallelogrammic in-plane stress element and the equivalent nodal load matrix due to concrete shrinkage, subgrade friction and thermal expansion or contraction have been developed to deal with in-plane effects on a concrete highway pavement with skewed joints. This paper is in addition to the finite parallelogrammic plate bending element developed by the author [Jo Byung-wan, Development of skewed element for the concrete element, 7th Annual Structures Congress, ASCE, San Francisco, CA, U.S.A. (1989)] that analyzes a concrete highway pavement subjected to gravity loads. In particular, the significance of the friction between concrete slab and sub-base on the overall behavior of the complete pavement system is highlighted.
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