Box girder

Section of the original tubular Britannia Bridge

A box or tubular girder is a girder that forms an enclosed tube with multiple walls, rather than an I or H-beam. Originally constructed of riveted wrought iron, they are now found in rolled or welded steel, aluminium extrusions or prestressed concrete.

单词	Box beam
释义	Box beam 原声例句工程学速成课 The crack went through nearly the entire box beam with a significant offset between the two sides. 裂缝几乎穿过整个箱梁，两侧之间有明显的偏移。英语百科 Box girder A box or tubular girder is a girder that forms an enclosed tube with multiple walls, rather than an I or H-beam. Originally constructed of riveted wrought iron, they are now found in rolled or welded steel, aluminium extrusions or prestressed concrete.
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Box beam

Box girder