SU737558A1 - Floating structure for conducting work on water surface - Google Patents

Description

(54) FLOATING CONSTRUCTION FOR MANUFACTURING The invention relates to the field of marine and small-scale hydraulic engineering. A sea floating construction for various works is known, containing a surface platform for placing equipment and an underwater part in the form of pontoons interconnected by a farm and supports 1}. The disadvantage of such a floating structure is the rigid attachment of the supports to the bottom of the sea, which does not allow for fast shifting of the floating structure to another place. The closest to the invention in terms of the achievable goal is a floating structure containing a floating base with a working platform located on it to remove construction or crane equipment and two openings 2l. Its disadvantage is the presence of a large effective waterline due to the execution of the base in the form of a solid pontoon, which does not allow production on the aquatic platform to give work in the water area under wave conditions more than 2 points. The purpose of the invention is to improve the performance of the facility. To achieve this goal, in a floating structure for performing work in the water area, containing a floating base with a working platform located on it to accommodate the construction of a Gel'OORO or crane equipment and two supports, (X in the form of two stitches, casted by a farm 3) the middle of which is the working platform, and to the pontoons, perpendicular to the farm, additional trusses are rigidly attached, on the free ends of each lx of the SH1X there is a stabilizing unit, executed in the form of two vertically oriented pontoons installed below the waterlines, and two horizontally oriented pontoons installed waterlines, and therewith trough-shaped passive stubs, recessed below the water level are substituted in. Fig. 1 shows a floating structure for carrying out works in the water area, a plan view; - the same, side view; in Fig. 3 - the same, front view. The floating structure for carrying out work on the water area contains a floating base 1 with a working platform 2 on it for marking and building or crane equipment. dovani and two supports 3 which have internal cavities for z.akachki ballast. The base is made in the form of two pontoons 4, rigidly interconnected by a farm 5, in the middle of which is a working platform 2, and to the pontoons 4, perpendicular to the farm 5, doposhshtelnye farms b are rigidly attached, at the free ends of each of the 1шх there is a stabilizing unit, made in the form of two vertically oriented pontoons 7, installed below the waterline, and two - horizontally oriented pontoons 8, installed on the Waterline, and under them are placed trough-shaped passive stabilizers 9, under the bottom Aries water. The floating structure operates in the following manner. A lifting crane or other working mechanism is installed firmly on the work platform. Towards the place where the work is carried out, it is towed with supports raised and attached to the floating base. Working operation of the facility is carried out only when fully supported ballast are lowered onto the ground. Raising and lowering the supports is performed using a ballast system. When water ballast is pumped into special tanks mounted inside the cavity of the supports, the supports are lowered onto the bottom soil. When pumping the ballast supports float. The ballast is pumped into the supports up to marks located at a calm water level and in such a volume that the calculated wave, when interacting with the construction, does not create a lifting force exceeding the weight of the ballast in the surface part of the supports, i.e. on the wave support not; Break away from the ground. After the platform is lowered onto the ground, they are firmly fixed to the floating base of the pontoon. In this form, the structure is ready for operation. The lifting of the supports is carried out in the following order: the supports are disconnected from the hull of the floating base, the required amount of ballast is pumped out to ascend the supports to the required draft. Calming the pitching of the structure on; Excitement occurs due to the special arrangement of the pontoons and the action of the passive stabilizer. Dipping the end of the additional farm into the water is a horizontally oriented pontoon creating a restoring moment, and a passive stabilizer - a damping moment. When the end of the additional farm leaves the water, the passive stabilizer captures a volume of water sufficient to form a reducing moment. The height of the freeboard of the vertically oriented pontoons, which do not create a large lifting force, as well as the throughness of the structure of the floating base, which does not provide much resistance to the traveling wave, contributes to a decrease in the amplitudes of the pitching. The peculiarity of the floating structure on the waves is that with the oblique approach of the waves (the most likely case of the interaction of the waves with the structure), additional farms work in antiphase, i.e. when one additional farm rises on the crest of the incident wave, the other. Located on the slope of a wave, descends. As a result, the midpoint on the farm, over which the working platform is installed, remains almost stationary, which creates normal conditions for the work of the land devices used. The proposed floating structure ensures the safety of the operation of land devices by improving the efficiency of the structure. invention floating structure for. work on the water area containing a floating base with a working platform located on it to accommodate construction or crane equipment and two pillars, distinguished by a hem, which, in order to improve the performance of the structure, the middle / of which the working platform is located, and to the pontoons, perpendicular to the truss, additional trusses are rigidly attached, at the free ends of each of them there is a stabilizing knot, complete yide two minutes in a vertical but oriented pontoons installed below the waterline, and two horizontally oriented pontoon installed above the waterline and below 586 ragme73 scheny trough passive stabilizers, buried under water level. Sources of information taken into account during the examination 1. USSR author's certificate No. 195407, cl. B 63 B 35/44, 1962. 2. The brochure of the company MS Viamora Marine Canada, 1972.

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Claims (1)

Claim Floating facility for. work in the water area, containing a floating base with a working platform located on it to accommodate construction or crane equipment and two supports, characterized by gem, which, in order to improve the performance of the structure, the base is made in the form of 'two pontoons rigidly interconnected by a farm, in the middle of which there is a working platform, and additional trusses are rigidly attached to the pontoons, perpendicular to the truss, at the free ends of each of them there is a stabilizing unit made in in the form of two vertically oriented pontoons installed 5 below the waterline, and two horizontally oriented pontoons installed above the waterline, and under them are placed trough-like passive stabilizers, buried beneath the water level.