Abstract: A penetration roller for a cone penetration test device having a structure for assessing a replacement time and preventing a slip includes a frame seated on a seabed surface, a support body coupled to the frame, and a pair of first and second penetration rollers provided inside the support body so as to be rotated by a driving member provided on the support body in a direction such that same engage with each other, and having anti-slip protrusions so as to pressurize both sides of the outer peripheral surface of a rod having a cone probe coupled to an end thereof. When the rod is pressurized and moved by the first and second penetration rollers, the anti-slip protrusions form stamping grooves, thereby preventing a slip, and it can be determined whether to replace the first and second penetration rollers, on the basis of the depth of the stamping grooves.

Abstract: An automatically-separable suction anchor system including a plurality of pumps is disclosed. The system includes an opening/closing unit including a blocking plate provided at a suction pile while having a through hole and pull-up brackets, and a valve member to cause the interior of the suction pile to selectively communicate with an exterior of the suction pile, a suction device including an operation-supporting tubular body with a suction hole and a pressing opening/closing part configured to enable the suction hole to communicate with the suction pile, a frame including clamps to be selectively coupled to the pull-up brackets, and first and second supports, and an operating pump coupled to the operation-supporting tubular body, the operating pump including a first pump of high capacity and a second pump of high head configured to penetrate the suction pile, and a third pump configured to draw the suction pile, and a control module.

Abstract: An automatically-separable suction anchor system including a plurality of pumps is disclosed. The system includes an opening/closing unit including a blocking plate provided at a suction pile while having a through hole and pull-up brackets, and a valve member to cause the interior of the suction pile to selectively communicate with an exterior of the suction pile, a suction device including an operation-supporting tubular body with a suction hole and a pressing opening/closing part configured to enable the suction hole to communicate with the suction pile, a frame including clamps to be selectively coupled to the pull-up brackets, and first and second supports, and an operating pump coupled to the operation-supporting tubular body, the operating pump including a first pump of high capacity and a second pump of high head configured to penetrate the suction pile, and a third pump configured to draw the suction pile, and a control module.

Abstract: According to the present disclosure, at least two fluid inlet/outlet pipes, each of which is provided with a filter, are installed outside a structure to be bent and an end of each of the fluid inlet/outlet pipes is connected to a pressure sensor provided on the structure. Thus, since a fluid in the state in which low-frequency and high-frequency components of the disturbances generated outside the structure are removed therefrom acts on the pressure sensor, the underwater pressure sensing apparatus is capable of measuring fluid pressure in a stable state.

Abstract: According to the present disclosure, at least two fluid inlet/outlet pipes, each of which is provided with a filter, are installed outside a structure to be bent and an end of each of the fluid inlet/outlet pipes is connected to a pressure sensor provided on the structure. Thus, since a fluid in the state in which low-frequency and high-frequency components of the disturbances generated outside the structure are removed therefrom acts on the pressure sensor, the underwater pressure sensing apparatus is capable of measuring fluid pressure in a stable state.

Abstract: A multi-suction pile anchor and a plate anchor for mooring a marine structure, comprises a plurality of suction piles connected in parallel with the same capacity penetrates into the sea floor, wherein a pullout resistance required for mooring the marine structure is applied by changing the number of suction piles, and wherein a plurality of suction piles is connected each other with a connecting plate to increase a lateral resistance.

Abstract: A multi-suction pile anchor and a plate anchor for mooring a marine structure, comprises a plurality of suction piles connected in parallel with the same capacity penetrates into the sea floor, wherein a pullout resistance required for mooring the marine structure is applied by changing the number of suction piles, and wherein a plurality of suction piles is connected each other with a connecting plate to increase a lateral resistance.