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3400t oil supply ship Launching technology by using airbags 3400DWT供油船应用气囊下水方案 1. This technology is used to launch 3400t oil supply ship built in Thailand, the other ships’ launching process can refer to this technology . 此方案应用于建造在泰国的供油船下水，其他船舶下水也可借鉴。 2. quoted standard： CB/T3975-1996 airbags for ship slipping and launching Loa=90m B=15m TF=1.674m Ta=3.164m D=6.8m W=1850 t 下水船的相关数据： 总长=90m 型宽=15m 艏吃水=1.674 尾吃水=3.164 型深=6.8m 自重=1850T 2.2 main parameter of the slipway 船台的主要参数 2.2.1 All we know is that the slipway is horizontal now。 我们现在只知道船台是水平的· 2.2.2 rebuild requirement of the silpway： 关于船台改造的要求 a. format the horizontal part of the slipway, and remove the object which can break airbags； 修理船台水平的地方，并且清除可能对气囊造成破坏的障碍物 b. the end of the horizontal slipway to the mean tide lever ,the grade should be 1/30~1/35 ,the bearing capacity is over 0.1Mpa. 船台末端，接近水位的位置的坡度应该在1/30~1/35之间，并且能承受0.1Mpa的压力 c. Under the water, the grade should be 1/15,the length is that， when launching ,the depth of the water at the end of the slipway should over1.8m. 在水中的船台坡度应该在1/15，并且末端水深要超过1.8m 3. requirement of the main equipments 主要的设备 Air-bags type is 6 layers φ1.5×15,number is 20. pillar height：H=0.9m： Q=π(D-H)/2 L· P·N ·Cb =3.14(1.5-0.9)/2×15×0.16×9.8×10×16×0.7297=2586(t) 起墩过程中承载力的计算： 安全系数：K=2586/1850=1.39＞1.26
Airbag’s height：H=0.5m safety factor：K=4311/1850=2.33＞1.26（satisfied） the tractive force should be 牵引力 F= W*sinactank = 1850×sinactan1/80=23T
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