详情

原文传递 Steel Bridge System with Delayed Composite Action.

题名：	Steel Bridge System with Delayed Composite Action.
作者：	AZIZINAMINI, A.; YAKEL, A. J.
关键词：	Steel-bridges; Composite-structures.;Girders-; Bridge-decks; Composite-beams; Epoxy-coatings; Studs-; Concrete-structures; Flanges-; Testing-; Performance-evaluation; Implementation-; Nebraska-.
摘要：	Development of a bridge system where composite action is developed after the concrete has hardened would reduce the extent of cracking observed in bridge decks while elimination of shear studs would reduce the potential tripping hazard to workers. The objective of this research was to recommend a system which met one or both of these goals to the Nebraska Department of Roads Bridge Division for further evaluation. To this end, a number of component level tests along with two prototype beam tests were performed. Details of the testing are described in the report. Of the alternatives considered, two systems appear to offer the most promise for eventual implementation. The first system utilizes a plastic boot placed over the stud prior to casting of the concrete creating a void around the stud. After the concrete has cured the boot can be punctured or removed and the void filled with an epoxy grout. Upon curing the system will perform as though the studs had been directly cast into the concrete. The second recommended alternative utilizes a single plate welded along the length of the girder protruding vertically in the middle of the flange.
报告类型：	科技报告