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Degree of composite action verification of bolted GFRP bridge deck-to-girder connection system
There have been a variety of studies to verify the degree of composite effect of fiber reinforced polymer (FRP) deck and girder connection system worldwide. In this paper, static load test was performed on 3 specimens in order to analyze the degree of composite effect in case of connecting FRP deck and girder using bolt, and the results are as following: (1) When FRP deck and H-section are connected each other with non-composite, about 7.9% of H-section flexural rigidity was increased by the flexural rigidity of FRP deck, and in case of connecting FRP deck and H-section using bolt at every 48 cm interval, it showed that about 25.4% of H-section flexural rigidity was increased owing to the flexural rigidity of FRP deck. (2) In case of FRP deck of hollow section, we can see that it shows characteristics of strain distribution different with the structure member of closed section, due to the characteristics of section shapes. (3) As a result of analysis on the degree of composite action when bolts were fastened at every 48 cm interval, through the changes of neutral axis, it showed about 46.1% at average. This value will be more increased as the fastening intervals of bolts are shortened, and it is regarded as necessary to set the bolt-fastening interval through the review on the degree of composite action per bolt fastening interval and its economy.
Degree of composite action verification of bolted GFRP bridge deck-to-girder connection system
There have been a variety of studies to verify the degree of composite effect of fiber reinforced polymer (FRP) deck and girder connection system worldwide. In this paper, static load test was performed on 3 specimens in order to analyze the degree of composite effect in case of connecting FRP deck and girder using bolt, and the results are as following: (1) When FRP deck and H-section are connected each other with non-composite, about 7.9% of H-section flexural rigidity was increased by the flexural rigidity of FRP deck, and in case of connecting FRP deck and H-section using bolt at every 48 cm interval, it showed that about 25.4% of H-section flexural rigidity was increased owing to the flexural rigidity of FRP deck. (2) In case of FRP deck of hollow section, we can see that it shows characteristics of strain distribution different with the structure member of closed section, due to the characteristics of section shapes. (3) As a result of analysis on the degree of composite action when bolts were fastened at every 48 cm interval, through the changes of neutral axis, it showed about 46.1% at average. This value will be more increased as the fastening intervals of bolts are shortened, and it is regarded as necessary to set the bolt-fastening interval through the review on the degree of composite action per bolt fastening interval and its economy.
Degree of composite action verification of bolted GFRP bridge deck-to-girder connection system
Park, Ki-Tae (author) / Kim, Sang-Hyo (author) / Lee, Young-Ho (author) / Hwang, Yoon-Koog (author)
Composite Structures ; 72 ; 393-400
2006
8 Seiten, 16 Bilder, 3 Tabellen, 8 Quellen
Article (Journal)
English
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