Mounting device utilizing gasbag floating aid to automatically float, sink and position steel frame and construction method thereof

Abstract

The invention discloses a mounting device utilizing gasbag floating aid to automatically float, sink and position a steel frame. The mounting device is arranged on a steel frame, wherein at least onevertical gasbag is arranged on each vertical side of the steel frame; at least one horizontal gasbag is arranged on each transverse side of the bottom of the steel frame; a plurality of hoisting ringsare arranged on the steel frame; the vertical gasbag and the horizontal gasbag are connected to a hoisting belt; a hydraulic hook releaser is connected between the hoisting belt and the hoisting ring; the vertical gasbag and the horizontal gasbag are provided with gas charge and discharge control valves; the gas charge and discharge control valves are in signal connection to a central gas chargeand discharge controller; and the outer sides of four corners of the steel frame are connected to positioning ships with positioning anchor cables through mooring ropes. The mounting device has the beneficial effects that: the mounting device can automatically float in a dock directly, floats and is pulled to a specified mounting site, remarkably reduces dependence on ship equipment resources, reduces construction cost, and shortens a construction period.

Description

technical field [0001] The invention relates to an installation device and a construction method for self-floating and submerging positioning and installation of a steel frame by using an airbag to assist buoyancy. Background technique [0002] At present, in the field of offshore engineering, there are many steel frames installed on the seabed to provide support for the upper equipment. For example, the jacket of the offshore drilling platform is a typical steel frame used to support the upper oil production module. It is usually huge in size, long and tall. Ten meters, with a total of several thousand tons to tens of thousands of tons; as the base of offshore wind power, the steel frame of the base is also installed on the seabed in the form of outriggers, and the stress state of the base is relatively complicated, and the installation accuracy requires High; currently in the marine product breeding industry, it is popular to install the steel frame carrying many breeding ...

AI Technical Summary

Problems solved by technology

Some construction projects actually use airbags to help buoyancy, which has a certain buoyancy effect, but still does not break away from the dependence on various floating cranes

Moreover, in the actual use of airbags for buoyancy, some problems are also exposed, such as positioning problems. Due to the impact of ocean currents on the airbags, the steel frame yaws or shakes left and right in the water, resulting in the inability to locate the crane and the positioning of the installation site. Accuracy requirements; for example, the difficulty of dismantling the buoyancy fixed point of the airbag requires divers to dive down for manual dismantling. Due to the large number of hanging points, the dismantling operation time is long, and the use of underwater robots in deep water areas will result in higher equipment usage costs. As a result, the construction cost was saved in the rental of floating cranes, but it was spent more in dismantling

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