Sandglass type ocean engineering floating structure

A sandglass type ocean engineering floating structure, comprising:

• an upper structural body in shape of a circular truncated cone or frustum;
• and
• a lower structural body in shape of a regular circular truncated cone or regular frustum, wherein the upper structural body and the lower structure body are connected through their respective smaller bases at a junction plane, and an axis of the upper structural body and an axis of the lower structural body are aligned in a same straight line, wherein the upper structural body comprises an upper hull, a center compartment I disposed inside the upper hull that has a same height as that of said upper structural body, and a plurality of watertight compartments disposed between the upper hull and the center compartment I,
• wherein the lower structural body comprises a lower hull, a center compartment II that has a same height as that of said lower structural body, and a plurality of watertight compartments disposed between the lower hull and the center compartment II,
• wherein a larger base of the upper structural body serves as a deck and a larger base of the lower structural body serves as a bottom of the floating structure, and
• wherein the floating structure has a shape of a sandglass and horizontal cross sections of the floating structure are circular or polygonal;
• wherein the center compartment I and the center compartment II are connected to form a through hole extending vertically through the floating structure from the larger base of the upper structural body and the larger base of the lower structural body,
• wherein the sandglass type ocean engineering floating structure further comprises a plurality of support pillars that are disposed about an exterior surface of the floating structure, wherein an upper end of a support pillar is fixedly attached to the upper structure body at an upper attach point and a lower end of the support pillar is fixedly attached to the lower structural body at a lower attached point, and each individual support pillar and the axis of the floating structure are located in a same plane.