Abstract
The article describes the research methods of the stress-strain of reinforced concrete framings (piles and pylons) using embedded strain gauges. The relations of load to indirect reactive characteristics displayed by the weighing device which were obtained through laboratory tests of framings reference specimens are given. Summary tables of framings stress-strain monitoring results gained during the II Phase of construction project (after base plate concreting for piles and floor slab concreting for pylons) are included. The study of obtained results of actual framings stress will allow reducing construction material consumption through the reduction of the safety factors on reliability.
Highlights
A structural analysis calculation in the design of non-unique structures is based on the experience of construction of similar objects
This stretching is transformed by strain gauge bridge into output, which is displayed at the screen of weigh digitizer [Fig. 3] connected to the strain gauge through a power lead
The strain gauge does not affect the stressstrain of the controlled object, which significantly increases the reliability of measurements [1-7]
Summary
A structural analysis calculation in the design of non-unique structures is based on the experience of construction of similar objects. They work as follows: tensile deformation in the thickness of the monitored object increases the distance between strain gauge flanges, and they stretch the rod [Fig. 2]. This stretching is transformed by strain gauge bridge into output (operating factor), which is displayed at the screen of weigh digitizer [Fig. 3] connected to the strain gauge through a power lead. The stiffness of the strain gauge can be adjusted to the stiffness of concrete surrounding it In this case, the strain gauge does not affect the stressstrain of the controlled object, which significantly increases the reliability of measurements [1-7]
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