Development of Computer Modeling for Prediction of Temperature Distribution Inside Concrete Pavements

摘要

Computer models are developed for predicting temperature in concrete pavements and rainwater infiltration into soil and subgrades due to weather changes. The models use an implicit finite-difference scheme which employs spatial factorization to implement the solution as an alternating-direction-implicit sequence. In conjunction with delta formulation, the developed method is able to combine analytical simplicity with numerical efficiency. Computer programs are developed for these models. A user manual has also been prepared to show how to use these programs. In order to facilitate situations when weather data and material properties are unavailable for computer input, Typical Meteorological Year (TMY) data bases are searched and those for Tallahassee, Orlando, and Miami, Florida, are collected and transferred to floppy disks. Physical properties for soil and concrete are also reviewed and those relevant to modeling are compiled in the report. The softwares consist of one source disk and twelve data disks. The source disk is dedicated not only to compute the temperature and water-pressure-head fields but also to make isotherm and isobar plots.