Transverse panel-to-panel connections for full-depth precast concrete bridge deck panels on continuous steel girder bridges: Part 2, time-dependent analysis

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In this article, the authors seek to determine the initial compressive stress to avoid cracking and leaking in precast, prestressed concrete bridge deck panels. They use an age-adjusted effective modulus method to evaluate time-dependent stress redistribution in composite systems. The evaluation found an initial precompression of 200 to 300 psi to be adequate for single span bridges, 200 to 700 psi for three-span bridges, and 100 psi for two-span bridges. They also determine that accelerated construction schedules for continuous span bridges make it necessary to substantially increase initial compressive stress.