| 摘要 |
PURPOSE:To construct circumferential walls of high strength without using molding form, by a method wherein precast concrete boards for peripheral side walls for marine structures are constructed to be jointed at the outer sides in a plant and inner walls are constructed with cast-in-place concrete. CONSTITUTION:So far as circumferential side walls 1 for marine structures for platforms and others for excavating a submarine oil field are concerned, precast concrete boards 5 having a given strength and water-tightness are constructed to be jointed with concrete joinner previously in a plant. Combined reinforcement bars 8 are arranged on the inner face of the precast concrete boards 5 and reinforcing bars 9 are arranged on the construction joint face. Partition walls 2 and base walls 4 are constructed inside molded concrete units in the field, and the circumferential side walls 1 of composite concrete are obtained. Thus, the strength of the circumferential side walls is heightened and the cost reduction of molding forms can be realized. |
