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A girder bridge is a bridge that uses girders as the means of supporting its deck. [1] The two most common types of modern steel girder bridges are plate and box.
Attempts have been made to increase the safety of bridges with pin and hanger assemblies by adding some form of redundancy to the assembly. Retrofits that add redundancy to pin and hanger assemblies include adding a "catcher's mitt"—a short steel beam attached to the bottom of the cantilevered girder that extends out beneath the suspended girder to "catch" the suspended girder should ...
6: Bridge and Turnpike Set: 1958: 543 7: Combined Girder and Panel, Bridge and Turnpike: 1959: 613 8: Motorized Girder and Panel, Bridge and Turnpike: 1960: 640, later 675 9: Motorized Girder and Panel, Bridge and Turnpike: 1960: 860, later 921 10: Motorizing Set (adds 1 motor, esp. for sets 1-7) 1960: 100 11: Hydrodynamic Building Set (1 ...
[2] Plate girder bridges are suitable for short to medium spans and may support railroads, highways, or other traffic. Plate girders are usually prefabricated and the length limit is frequently set by the mode of transportation used to move the girder from the bridge shop to the bridge site. [3] Anatomy of a plate girder.
Box girder bridge: Cable-stayed bridge: 1,104 m (Russky Bridge, Vladivostok, Primorsky Krai, Russian Far East) 10,100 m (Jiashao Bridge, Zhejiang, China) Cable-stayed suspension bridge hybrid Cable-stayed bridge and Suspension bridge: 1,408 m (4,619 ft) Yavuz Sultan Selim Bridge, [2] Istanbul: Cantilever bridge: 549 m (Quebec bridge) 1042.6 m ...
The old Britannia Bridge with train track inside the box-girder tunnel Section of the original tubular Britannia Bridge The patent curved and tapered box girder jib of a Fairbairn steam crane. A box girder or tubular girder (or box beam) is a girder that forms an enclosed tube with multiple walls, as opposed to an Ɪ-or H-beam.
The total height of the structure is generally between 1.5 a and 2.5 a. [7] The arches are semicircular, and their thickness T depends both on the span a of the arches and on the height H of the structure: [7] If H = 2.5 a, T = 0.1 a + 0.04H If H < 2.5 a, T = 0.125 a + 0.04H
Thousands of orthotropic deck bridges are in existence throughout the world. Despite the savings and advantages (up to 25% of total bridge mass can be saved by reducing deck weight, as the weight reductions extend to cables, towers, piers, anchorages, and so forth), the US has only about 60 such bridge decks in use as of late 2005.