Abstract
Utjecaj pucanja užadi na ponašanje prednapete sandučaste grede ojačane CFRP-om
Highlights
The first-ever bridge with external prestressing was built in Aue, Saxony, from 1935 to 1937, according to the Dischinger concept (DRP 727429) [1]
This behaviour is attributed to the existence of Carbon Fibre Reinforced Polymer (CFRP) which greatly enhanced the strength of the box beam
The results can be summarized as follows: -- Load-deflection curves proved that the deflection of box beam under snapping effects was significantly reduced when CFRP was used. -- An average change in stress of the beam strengthened with CFRP was 456.14 N/mm2, which is lower by 19 % compared to PB1 and higher by 45 % compared to PB2
Summary
The first-ever bridge with external prestressing was built in Aue, Saxony, from 1935 to 1937, according to the Dischinger concept (DRP 727429) [1]. The results indicated that the ratio had a significant effect on the load-carrying capacity, ductility and failure mode of the beams. The results indicated that the ACI 318 [7] and Eurocode 2 [8] equations were reasonably accurate for beams strengthened using external tendons within the section depth. Polymer fibres have been widely used to strengthen the box concrete beams of bridges when the main concern was to eliminate the corrosion problem associated with conventional steel reinforcement and, to reduce the maintenance cost considerably. Sakuraba et al [6] investigated the strength and deformation characteristics of Carbon Fibre Reinforced Polymer (CFRP) box beams with various laminated structures under flexural load. The results are presented in terms of the load carrying capacity, crack pattern and width, torsional capacity and modes of failure
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