变截面箱梁
box girder with variable cross section
variable cross-section box girder
薄壁箱梁截面
Thin-walled Box Girder Section
连续箱梁截面形式
type of continuous box girder sections
梯形截面箱梁
trapezoidal box section girder
box girder with trapezoidal section
变宽异型箱梁
special-shaped box girder bridge of width variety
大跨度连续箱型梁桥
large span continuous box beam