Zhenjiang Great Wall Group Co.,Ltd
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Delta bridge was named in CB450 after introduced from UK to China; has the advantages of long fatigue life,great loading capability and good appearance,suits to be used as a permanent bridge; Maximum span can be up to 81meters; Chord main steel is Q420 ;
GW D-Type Big Span Steel Bridge
Model Alias: CD450；CD；450
Extra Width Single lane: Bridge deck net width: 4.2m Maximum Free Span length: 82.296m
Std. Double lanes : Bridge deck net width: 7.35m. Maximum Free Span length: 91.44m
GW D-bridge is the patent of Great Wall;It was invited from Germany and has advantage in the long-span and big loading comparing to bailey bridge. Thus, it can save cost of piers.
Its panel chord is bigger than bailey bridge panel but the panel structure is simpler. All the components are bolted so the bridge can be used as a permanent bridge because of its small deflection..The components are interchangeable and repetitively used.This kind of bridge has various structure changes to satisfy different loading capacity.
Comparing to Bailey bridge,it can be up to larger span; comparing to Delta Bridge, it is cheaper for the material low cost and the panel flexibility;
In additional, it can be acted as permanent bridge because of its small deflection
| Bridge Type | Original CB450 Steel bridge | Modified CB450 Steel bridge |
| Alias | Delta Bridge | GW D Bridge |
| Std. Width & Lanes | 4.2m Single lane & 7.35M Two lanes | |
| Maximum Free Span | 81M | 91M |
| Main Steel | GB Q420 and Q345 | Q345 |
| Deck | anti-skid Steel/Timber/Concrete/Epoxy mixture,etc | |
| Loading | Design according to different requirements; AASHTO HS20, HS25,Caterpillar-60,Trailer-80;BS5400 HA+HB,etc |
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| Corrosion Prevention | Original Painted Or Hot Dip Galvanized | |