大连造船厂十万吨半坞式船台,水下段最后一个沉箱,为一个变截面“U”形钢筋混凝土沉箱。该沉箱本体长56米,宽18米,本体高3.8米;沉箱本体以上坞墙宽2.2米,坞墙高7.1米,沉箱结构如图1。这样一个比兰球场还要大得多的庞然大物,重达3500吨。为保证沉箱浮运和安装就位时的安 Dalian Shipyard 100,000 tons half-dock, the last of the caisson subsea, a variable cross-section “U” -shaped reinforced concrete caissons. The caisson body 56 meters long, 18 meters wide, body 3.8 meters high; caisson body above the dock wall width of 2.2 meters, 7.1 meters high dock wall, caisson structure shown in Figure 1. Such a much larger stadium than Lan, weighs 3,500 tons. To ensure the safety of caissons floating and installed in place