長(zhǎng)3.5m,體積28.07m3,重量73.44t,梁高3.639~3.295m,頂板厚度0.2m,底板厚0.607~0.526m,腹板厚0.8m。
⑴箱梁截面積計(jì)算
① 2#截面
A1=1.8×(0.18+0.45)=1.134 ㎡
A2=0.2×3.1+0.25*0.8=0.82㎡
A3=0.65*[(3.639+3.295)/2-0.2]*2=4.28 ㎡
A4=3.1* (0.526+0.607)/2+0.4*0.2=1.84㎡
A=A1+A2+A3+A4=8.07㎡
⑵ 2#箱梁段重量計(jì)算(鋼筋砼按2.6t/m3計(jì))
G=AL=8.07*3.5*2.6=73.44M3