5Shepherd B, Gibbens B. The evolution of the concret1 '" channel" bridge system and its application to road, an1 rail bridges [ C]//Concrete Structures: the Challenge o1 Creativity, CEB-FIB Symposium. Avignon, 2004.
6Durham S A, Heymsfield E, Schemmel J J. Structural evaluation of precast concrete channel beams in bridge superstructures [ R ]. Washington, DC: Transportation Research Board, 2003:79-87.