PREFABRICATED SANDWICH PANELS FOR BRIDGE DECKS

Based on the generally recognized superior strength-weight characteristics of sandwich panels, a study program was carried out to test a new type of compositely acting steel-concrete sandwich panel for use in bridge decks. Basically, the sandwich panel consists of two thin-faced plates of steel joined by a series of round shear-spacer studs welded to their inner surfaces. The core between the plates is made of lightweight concrete using expanding cement to induce a small prestress into the system. Laboratory tests were made on 10 small-scale panels, some loaded with a concentrated load and others with a uniformly distributed load. Mathematical theories developed for this type of panel show a generally satisfactory correlation between tests and theory. A number of solutions that take into account practical fabrication and erection problems are offered to illustrate how such panels can be bolted or welded, either longitudinally or transversely, across standard steel bridge girders. A comparative investigation indicated that these panels are substantially stronger and stiffer than normal reinforced concrete slabs that use the same quantity of concrete and steel.

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  • Accession Number: 00080987
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Mar 26 1975 12:00AM