| 摘要 |
PURPOSE:To reduce the construction cost of a foundation for marine structures by a method in which a hollow structure consisting of a cylinder group whose upper and lower ends are opened is deflated and landed on the bottom, a pile pit is excavated to the supporting layer under the guidance of the cylinder, and concrete is placed into the pile pit. CONSTITUTION:The upper port of a hollow structure consisting of a guide cylinder 1 and ballast 12 is closed with a cover to float the structure 1, and the structure 1 is towed to a construction site, deflated, settled, and penetrated into the soft ground layer 3. The cover is removed, another structure 1 is joined with the upside of the structure 1, and the upper port of the structure 1 is projected to the sea surface. Excavation is made to the supporting layer 6 under the guidance of the guide cylinder 11 for the casing pipe to form a pile pit 5. An iron bar cage 71 is set in the pile pit 5 and concrete 72 is placed to the lower part of the structure 1. Furthermore, the space of the structure 1 is packed with a filler and the upper port is enclosed. |
