在ＧＢ/Ｔ 144 0 5— 1993《通用桥式起重机》中规定 :箱形梁及单腹板梁上翼缘板的水平偏斜值ｃ≤Ｂ/2 0 0 (见图 1) ,箱形梁腹板的垂直偏斜值ｈ≤Ｈ/30 0 ,单腹板及桁架梁的垂直偏斜值ｈ≤Ｈ/2 0 0(见图 2 )。图 1　　　　　　　　图 2对全偏轨箱形梁和单腹板及桁架梁 ,这 2个 GB / T 144 0 5- 1993 “universal bridge crane” provides: box girder and single web girders on the flange plate horizontal deflection c ≤ B / 2 0 0 (see Figure 1), the box beam The vertical deflection of the plate h ≤ H / 30 0, the vertical deflection value of single web and truss girder h ≤ H / 2 0 0 (see Figure 2). Figure 1 Figure 2 For a full deviant box girder and a single web and truss girder, these two