Deformation measurements on a two-span concrete beam reinforced with steel sections
In the production of reinforced concrete structural elements expensive formwork is often needed which is then removed when the concrete has set.
In the production of reinforced concrete structural elements expensive formwork is often needed which is then removed when the concrete has set. To save cost it would be desirable to produce formwork girders in such a way that they become an integral part of the beam and serve as its reinforcement. Such structural elements however, require preliminary testing before receiving official approval.
The following report describes the testing of the load-bearing characteristics of a reinforced concrete beam with a formwork girder made from a rolled steel section which also serves part of the reinforcement. The 7.8 m (25.6 ft) long beam was tested with static and dynamic loads in a force controlled, servo-hydraulic test rig. As well as measuring all loads, inductive displacement transducers and strain gages also measured the deformation of the beam. The signals were picked up by a Scanning System type UPH 3200, which was expanded to 200 measuring points.
Published By: Horst Klinkert
01.01.1988
