ABSTRACT
ABSTRACT: Prefabricated composite constructions are currently taking a greater role in bridge building for economic and production technology reasons. While using VFT® girders technology, the thin concrete slab is made before the final assembling on supports. This slab is collaborating with steel girders and serving as shuttering for concrete bridge deck, constructed after final girders assembling on supports. The paper presents the results of field tests on two bridge structures with VFT® girders. At the presented field tests the attention was concentrated on the analysis of girders behavior. During static tests and stresses measurements the specific construction behavior was observed. This specific behavior was manifested by “wavy motion” of stresses signal during constant load level. This phenomenon occurred at different intensity for two tested structures. The stresses redistribution was caused by different factors. The main and the most probable causes of the stresses redistribution are the main subject of investigations.
