箱梁

箱梁	xiāng liáng	box girder (construction)
箱	xiāng	box / trunk / chest
梁	Liáng	Liang Dynasty (502-557) / Later Liang Dynasty (907-923) / surname Liang
梁	liáng	roof beam / beam (structure) / bridge
梁	liáng	variant of 梁