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Civil Engineering Technology

Bridge Superstructure

MethodsOutlineLeaflet
CORTY Method *CORTY:Corrugated T Shaped Girder
CORTY Method
*CORTY:
Corrugated T Shaped Girder
P.S. Mitsubishi developed Prestressed Concrete T-Shaped Girder with Corrugated Steel Web. The application of corrugated steel plate to web of precast girder reduces dead weight, extends span length and reduces cost. P.S. Mitsubishi built Sou River Bridge, the world first precast girder bridge (pretensioned) with corrugated steel web in 2005. P.S. Mitsubishi built Ayase River Bridge, the first post-tensioned precast concrete bridge with corrugated steel web in Japan, in 2010. PDF

pretensioned
(JAPANESE)

PDF

post-tensioned
(JAPANESE)

Incremental Launching Method using Corrugated Steel Plates
Incremental Launching Method using Corrugated Steel Plates
P.S. Mitsubishi developed rational and new incremental launching method using corrugated steel plates to webs of prestressed concrete box girder bridges. To use corrugated steel plates as a part of temporary launching girder at the time of launching makes it possible to reduce temporary load, PT materials and construction equipments. Precast panels are placed on the lower flanges of the steel plates, which eliminates needs for formwork of lower slab and scaffolding. PDF

(JAPANESE)

Cantilever Method using Corrugated Steel Plates
Cantilever Method using Corrugated Steel Plates
P.S. Mitsubishi developed rational and new cantilever method using corrugated steel plates to webs of prestressed concrete box girder bridges. To use corrugated steel plates as a part of construction support at the time of cantilever construction makes it possible to reduce weight of travelers, the number of segments and construction period. P.S. Mitsubishi built Sugitani River Bridge and Tabasawa River Bridge using this new technology in Japan, in 2007 and 2010 respectively. PDF

(JAPANESE)

Concrete Arch Construction Method with Steel Box Members
Concrete Arch Construction Method with Steel Box Members
P.S. Mitsubishi developed new construction method of concrete arch bridge. Firstly, steel box members are assembled along the axis of the arch rib. Secondly, the steel box members are filled with concrete to increase the axial strength, and then lapped with concrete by using traveling formwork. Long-span arch bridge, arch span of which is over 100m is possible to be constructed through the improvement of erection equipment. PDF

(JAPANESE)

Prestressed Concrete Box Girder Bridge with Corrugated Steel Webs
Prestressed Concrete Box Girder Bridge with Corrugated Steel Webs
Prestressed Concrete Box Girder Bridge with corrugated steel webs was developed in France in 1980’s. The application of corrugated steel plates to webs, which occupy around 20-30% of the weight of PC main girders currently in use, makes it possible to reduce dead weight and extend span length. P.S. Mitsubishi built Shinkai Bridge, the first bridge with corrugated steel webs in Japan in 1993. Then we constructed a number of bridges with corrugated steel web in Japan. PDF

(JAPANESE)

Pretensioned Precast Concrete Web Bridge
Pretensioned Precast Concrete Web Bridge
P.S. Mitsubishi developed Prestressed Concrete Box Girder with Pretensioned Precast Concrete Webs. The application of precast concrete to webs makes it possible to reduce dead weight, to save labor and to reduce cost. P.S. Mitsubishi built Nakashinden Viaduct, the first bridge with pretensioned precast steel web in Japan, in 2009. PDF

(JAPANESE)

Prestressed Concrete Hybrid Truss Bridge
Prestressed Concrete Hybrid Truss Bridge
PC hybrid truss bridge is composed of three parts such as upper and lower concrete slabs, steel truss members and joint structure connecting concrete slabs and steel truss. Using steel truss instead of concrete webs to prestressed box girder bridges realizes fast construction and extension of the span length. P.S. Mitsubishi built Saruta River and Tomoe River Bridge in Japan, in 2009. PDF

(JAPANESE)

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