Abstract: Proposed is an underwater data center including: a support fixed to the bottom of the sea; and a body disposed on the support and having data processing servers arranged in an internal space thereof and a plurality of protrusions protruding radially outward from an outer peripheral surface thereof and arranged in a longitudinal direction thereof.

Abstract: This application relates to a cement mortar composition reinforced with a shredded waste fishing net and a method of manufacturing the cement mortar composition. In one aspect, the cement mortar composition includes cement mortar including cement, fine aggregate, and water and 0.5 to 2.0 parts by weight of a fibrous reinforcing material based on 100 parts by weight of the cement mortar. The fibrous reinforcing material may be manufactured by shredding a knotless fishing net and being formed of a single yarn that has a length of 3 mm to 60 mm and a diameter of 0.1 mm to 1 mm. The cement mortar composition that has improved crack resistance and tensile strength and in which an environmentally friendly and inexpensive reinforcing material obtained by shredding a waste fishing net at a random length instead of existing highly-expensive reinforcing material is included may be realized.

Abstract: The present invention relates to a hybrid wind power tower including: a DSCT structure part having an inner steel tube and an outer steel tube that concentrically stand on a foundation, wherein a space between the inner steel tube and the outer steel tube is filled with concrete; and a steel structure part provided on the DSCT structure part. The hybrid wind power tower having a steel tower and a DSCT tower combined is configured in such a manner that a plastic hinge that is required to bear huge loads is provided with the DSCT tower structure having high strength, and the economical steel tower structure is provided on the plastic hinge, thereby maximizing safety and cost efficiency of a wind power tower.

Abstract: The present relates to a suction foundation in which is penetrated into the seabed by a vacuum pressure of a suction pump, thereby providing a desired foundation support force. The suction foundation includes a hollow caisson having an opening at a lower end thereof, where the suction pump is connected to the hollow caisson and the suction pump allows the hollow caisson to penetrate into the seabed while discharging a fluid in the hollow caisson to an outside thereof by using the vacuum pressure of the suction pump, a lower skirt provided along a circumference of the opening of the hollow caisson and formed into a wave shape having a series of teeth, and having wedge-shaped cross-sections, and a stiffener increasing rigidity of the lower skirt by increasing thickness of a predetermined portion of the lower skirt.

Abstract: The present relates to a suction foundation in which is penetrated into the seabed by a vacuum pressure of a suction pump, thereby providing a desired foundation support force. The suction foundation includes a hollow caisson having an opening at a lower end thereof, where the suction pump is connected to the hollow caisson and the suction pump allows the hollow caisson to penetrate into the seabed while discharging a fluid in the hollow caisson to an outside thereof by using the vacuum pressure of the suction pump, a lower skirt provided along a circumference of the opening of the hollow caisson and formed into a wave shape having a series of teeth, and having wedge-shaped cross-sections, and a stiffener increasing rigidity of the lower skirt by increasing thickness of a predetermined portion of the lower skirt.

Abstract: Disclosed herein is supporting structure for an offshore wind power generator. The supporting structure includes lower support part and main body part. The lower support part includes lower concrete part which is provided on a base installed on the sea floor and is reduced in width from the bottom thereto to the top, at least one lower hollow space which is formed in the lower concrete part, and a lower inner-pipe which is attached to the inner surface of the lower hollow space. The main body part is coupled to an upper end of the lower support part. The main body part includes a main-body concrete part, at least one main-body hollow space which is formed in the main-body concrete part and communicates with the lower hollow space, and a main-body inner-pipe which is attached to a circumferential inner surface of the main-body hollow space.

Abstract: Disclosed herein is supporting structure for an offshore wind power generator. The supporting structure includes lower support part and main body part. The lower support part includes lower concrete part which is provided on a base installed on the sea floor and is reduced in width from the bottom thereto to the top, at least one lower hollow space which is formed in the lower concrete part, and a lower inner-pipe which is attached to the inner surface of the lower hollow space. The main body part is coupled to an upper end of the lower support part. The main body part includes a main-body concrete part, at least one main-body hollow space which is formed in the main-body concrete part and communicates with the lower hollow space, and a main-body inner-pipe which is attached to a circumferential inner surface of the main-body hollow space.

Abstract: A modular column system and a method of constructing the same are constructed by stacking at least one precast unit between a foundation section and a coping section. The precast unit makes use of an internally confined hollow column unit fabricated in advance, and joint sections between the precast units are firmly formed. Thereby, the modular column system can realize a short construction period and economy because reinforcement bars and forms are not used, as well as high resistance to bending moment and reduction in cross section and self-weight of the precast unit, and thus the modular column system can provide easier and more economical assembly, and prevent brittle fracture of the joint section between the precast units.