KTB external cable construction method

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last updated：Oct 31, 2012

ケーティービー

Official site

This is the KTB external cable construction method using "SC Unbond" with the latest corrosion protection technology.

The Kansai East Connecting Road is a "regional high-standard road" that connects Saitama Prefecture (Kanetsu Expressway, Hanazono Interchange) and Yamanashi Prefecture (Shin-Yamanashi Ring Road). It aims to promote the exchange of people and goods between the northern Kanto region and the Koshin and Tokai regions, and to revitalize the economy and tourism as a new high-speed network road under construction. Among these, a five-span continuous PC box girder bridge (tentatively named New Mainano Bridge, main span 725.5 m) is being constructed on the rising lane on the Mainano Town side, which crosses the Arakawa River and the Chichibu Railway as part of the Kainano Chichibu Bypass. The external cables of this bridge have adopted SC Unbonded (SC-U1e). For more details, please contact us or refer to the catalog.

Related Link - http://isabou.net/sponsor/ktb/index.asp

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**Features** ○ Corrosion resistance function → Uses SC strands with full wire coating on PC steel materials ○ Fatigue resistance performance → No decrease in fatigue strength due to fretting between wires 　(Verified through 4 million fatigue tests) ○ No UV degradation ○ Fixing performance → KTB fixing method based on wedge fixing, allowing fine adjustment of tension with screws ○ Eliminates set loss ○ Workability → Easy arrangement of steel materials without the need for sheath placement or grout work ○ Excellent workability, achieving shortened construction periods ○ Technical review certification → Obtained technical review certification from the Civil Engineering Research Center in 1995 ● For more details, please contact us or refer to the catalog.