薄壁箱梁结构
Thin-walled box beam structure
焊接箱形吊车梁
Welded box -section crane girder
welding box-section crane girder
环绕式连续箱梁结构
surrounding continuous box-beam structure
浅埋箱形结构
shallow buried box-type structure
预制双跨箱形结构
precast double-scan box structure
钢桥梁焊接构件
welded steel bridge members
薄板焊接结构
welded thin plate
thin-plate welded structure
不连续焊接结构
discontinuous welding stucture