Movable/fixed man-made island cylindrical foundation

Abstract

The invention discloses a movable / fixed man-made island cylindrical foundation which consists of suction anchors, circular-arc apron plates, an annular flat plate and triangular supporting plates, wherein six suction anchor cylindrical foundations are uniformly distributed below the seafloor scour-resistant annular flat plate; six circular-arc apron plates are positioned between two adjacent suction anchors respectively and are connected with the upper parts of the suction anchors and the annular flat plate; the triangular supporting plates are arranged on the middle positions of the six suction anchors; and six frustums and six taper holes are arranged above the annular flat plate. The movable / fixed man-made island cylindrical foundation has the advantages that the structural form is optimized, the structural weight is reduced, and overall installation can be performed under the action of a floating crane in the offshore installation process; moreover, the structural bearing capacityis enhanced in the structural form, and the structural rigidity and the horizontal bending resistance are enhanced; the structure is easy to install and the offshore installation construction period is shortened, so that the engineering cost can be remarkably lowered; meanwhile, the structure is movable, so that the aim of recycling is fulfilled.

Description

technical field [0001] The invention belongs to the innovation of the structural form of a fixed artificial island in a shallow sea marginal oil field in the field of marine engineering. Background technique [0002] With the continuous increase of people's demand and ability to use marine space, the number and scale of artificial island construction are increasing year by year. In recent years, my country is also gradually exploring the experience of building artificial islands, especially in the field of petroleum engineering. Since artificial islands have the unique functions of receiving, processing, storing and transferring crude oil, construction has started in Bohai Chengdao Oilfield since 1991. The first pilot test artificial island was built, which provided experience for the later large-scale development of shallow sea oil artificial islands. Another typical artificial island is the Macau International Airport undertaken by China Harbor Engineering Company. It is t...

AI Technical Summary

Problems solved by technology

[0003] As far as the engineering structural characteristics of artificial islands are concerned, although the artificial islands that have been built and are being planned for different purposes have been and are facing some special technical problems in design, construction, and use, from an overall analysis, The basic problems of artificial island construction still do not exceed the basic technical scope of coastal engineering, such as: the structure type of artificial island wall revetment is still no more than riprap slope embankment, mixed type, gravity type, concrete sheet pile, ground connection wall , steel pipe (plate) piles, steel sheet pile lattice enclosures, reinforced concrete large diameter cylinders and other structural types

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