7t/m × 23.6m = 251.6t (2 )第二段箱梁(变截面)长度: 2.102 m (见Ⅱ-Ⅱ截面图) 翼缘板重量: G翼=4.65m 3× 2.39t/m 3× 1.02+2.154t/m × 2.102m × 0.2 = 12.241t 腹板重量: G腹=6.3m 3× 2.39t/m 3× 1.02+2.154t/m × 2.102m × 0.4 = 17.169t 箱体部分(含内模)重量: G箱=7.37 m 3× 2.39 t/m 3× 1.02+2.154t/ m× 2.102 m× 0.4+1.227t/m × 2.102m = 22.357t (3 )第三段箱梁(变截面)长度: 2.096 m (见Ⅲ-Ⅲ截面图) 翼缘板重量: G翼=5.49m 3× 2.39t/m 3× 1.02+2.154t/m × 2.096m × 0.2 = 14.286t 腹板重量: G腹=10.87m 3× 2.39t/m 3× 1.02+2.154t/m × 2.096m × 0.4 = 28.305t 箱体部分(含内模)重量: G箱=8.18m3 × 2.39t/m 3× 1.02+2.154t/m × 2.096m × 0.4+1.227t/m × 2.096m = 24.32t (4 )第四段箱梁(变截面)长度: 1.802 m (见Ⅳ-Ⅳ截面图) 翼缘板重量: G翼=5.57m 3× 2.39t/m 3× 1.02+2.154t/m × 1.802m × 0.2 = 14.355t 腹板重量: G腹=11.26m 3× 2.39t/m 3× 1.02+2.154t/m × 1.802m × 0.4 = 29.002t 箱体部分(含内模)重量: G箱=8.16m 3× 2.39 t/m 3× 1.02+2.154 t/m× 1.802m × 0.4+1.227
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