Description

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

Comparing between Delta & GW D modular bridge