Abstract: A prefabricated, modular bridge is provided that can be assembled to construct bridges of various lengths, widths and skew angles relative to the orientation of foundation elements. The modular bridge includes longitudinal frame members, and a roadway surface made of roadway deck panels and transverse hubs. The transverse hubs define transverse ledges to support ends of the roadway deck panels. The transverse hubs have attached hub attachment clamps that move transversely relative to the transverse hubs to selectively disengage or engage the top flanges of the longitudinal frame members. An assembly for splicing the longitudinal frame members is provided, including an anchor bolt extending between bearing support members attached to the longitudinal frame members. An external reinforcing assembly for the modular bridge is also provided. The external reinforcing assembly includes longitudinal tendons, anchor blocks, and spacers and hangers for deviating the tendons from the bottom flange of the frame members.

Abstract: A construction beam useful for building bridges, commercial or industrial buildings, or the like has an elongated shell with an interior volume. A conduit lies within the interior volume of the beam that has profile extending along a longitudinal direction of the beam. A compression reinforcement fills the interior volume of the conduit. The beam may include a shear connection device, where one end of the shear connection device is positioned in the compression reinforcement, and the other end extends outwardly through the shell.

Abstract: A composite beam system that can be used for the framing system in bridges or buildings and provide enhanced corrosion protection includes a fiber reinforced plastic beam shell with compression and tension reinforcement. The compression reinforcement consists of portland cement concrete which is pumped into a profiled conduit within the beam shell. The conduit for the compression reinforcement is profiled to optimally resist the internal forces in the composite beam for a particular loading. The tension reinforcement consists of carbon, glass or steel fibers anchored by wrapping around the ends of the compression reinforcement. The positioning of the tension reinforcement is optimally designed to equilibrate the internal forces in the compression reinforcement. Each composite beam has a series of internal vertical stiffeners which are perpendicular to the sides of the beam shell. The composite beams can be used in the construction of bridges and buildings using conventional erection techniques.