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Composite bridge steel and concrete girder without formwork - has concrete slab upper and steel flange lower chord on double T girder
Composite bridge steel and concrete girder without formwork - has concrete slab upper and steel flange lower chord on double T girder
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机译：无模板的复合钢桥和混凝土梁-在双T型梁上具有混凝土板上弦和钢翼缘下弦
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摘要
The girder espec. of span more than 15m. (1) comprises a concrete slab (10) as upper chord, and one or more steel flanges (22) as lower chord, with an interconnecting stem (23) on a double-T steel girder (20). The top flange (21) of the latter is severely reduced compared with the flange forming the lower chord, its dimensions being solely adequate for introduction of the stem forces. The concrete slab is designed as a self-supporting form element between adjoining girders (1, 2, 3) in the bridge. It is pref. wider than the girder's stem height. While weight is kept moderate for transport, it is still possible to dispense with elaborate formwork, and adequate torsion resistance is provided.
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