The steel caisson cofferdam
was constructed for W2 and E5 piers because the sheet
piles could not have enough penetration depth. The skin
plates were attached to the exterior of the frame.
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°°¢ÄÉÀ̽¼ Àξç(W2) Lifting of the steeelcaisson
°°¢ÄÉÀ̽¼ ¿î¹Ý Transportation of the steel caisson