Construction method of offshore fixed storage device

Abstract

The invention provides a construction method of an offshore fixed storage device. The construction method comprises the steps that a cylindrical storage device is machined and manufactured in a steel structure factory; shipping and transporting to a construction sea area; the floating crane lifts and turns over the storage device; the floating crane is matched with the vibratory hammer to insert and beat the cylindrical storage device to a stable seabed; mud is sucked in the material storage device, and impurities are cleaned; leaking stoppage bottom sealing concrete in the material storage device is poured; and finally, a storage device vertical ladder stand, a top opening operation platform and a top opening sealing cover plate are installed. The material storage device can be quickly constructed and fixed under the condition of a complex sea area, the investment of construction equipment and resources is small, the efficiency is high, and the construction cost can be reduced. The storage device is filled with leaking stoppage concrete, it is ensured that a waterproof storage space is formed between the structure and an external sea area, the structure is safe, and the device can be used for civil air defense engineering under special conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore construction, and in particular relates to a construction method of an offshore fixed storage device. Background Art

[0002] As my country strides forward from a maritime power to a maritime power, the importance and urgency of developing marine undertakings and building a maritime power are becoming increasingly prominent, and marine engineering construction has become a development trend of the times. Marine engineering is far away from land. When constructing marine structures, various building materials are mostly transported from land by transport ships. The transportation distance is long, the transportation quantity is limited, and there is a lack of dry operation storage space at sea, resulting in low construction efficiency. Marine mineral and oil resources are abundant. After the resources are mined, they need to be loaded on large ships and transported to land. The storage space at sea is limited, and the storage efficiency of resources at sea is low. In the construction of traditional marine structures, it is necessary to drive steel pipe piles and pile foundations at sea, and set up steel platforms as spaces for operations and storage of materials. The steel platform has a large steel structure investment, low construction efficiency, and high cost. In order to solve the above technical problems, the present invention designs a construction method for an offshore fixed storage device. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a construction method for an offshore fixed storage device, which can store building materials and mineral resources in a closed and waterless environment at sea, effectively solving the problems of harsh offshore environment, difficult raw material supply and resource storage, improving construction efficiency, with significant economic benefits, and increasing the safety of offshore storage of building materials and mineral resources. Under special circumstances, it can be used as a civil air defense project, with simple construction and a wide range of applications.

[0004] The present invention achieves the above technical objectives through the following technical means.

[0005] A method for constructing an offshore fixed storage device includes the following steps: Step 1: The cylindrical storage device is processed and manufactured in a steel structure factory; Step 2: The gantry crane or the transporter transports the cylindrical storage device to the transport ship, and the transport ship transports the cylindrical storage device to the construction sea area; Step 3: The floating crane lifts the overturned cylindrical storage device to the insertion position, and the floating crane cooperates with the hydraulic vibration hammer to insert the cylindrical storage device to the stable seabed; Step 4: Suction mud and clean up miscellaneous fillings inside the cylindrical storage device, and pour leak-proof and bottom-sealing concrete inside the storage device; Step 5: Install the storage device vertical ladder, top working platform, top sealing cover and other auxiliary structures.

[0006] Furthermore, the specific process of step 3 is as follows: The top reinforcement area of ​​the storage device is hung by the main hook of the floating crane, and the bottom reinforcement area of ​​the storage device is coordinated with the turning frame or the secondary groove of the floating crane. The floating crane lifts and turns the cylindrical storage device until it is in an upright state, and the floating crane lifts the cylindrical storage device to the insertion position. The floating crane cooperates with the hydraulic vibration hammer to insert the cylindrical storage device to the inside of the stable seabed; Furthermore, the specific process of step 4 is as follows: The silt and miscellaneous fillings of the cylindrical storage device are cleaned by suction machines, grabs and pump pipes. After the cleaning is completed, the underwater catheter method is used to construct the bottom concrete inside the cylindrical storage device. After the bottom concrete reaches the designed strength, the water inside the cylindrical storage device is pumped out to form a waterless storage space.

[0007] Furthermore, the specific process of step 5 is as follows: The floating crane is used to install the storage device's vertical ladder, top opening working platform, top opening sealing cover plate and other auxiliary structures. Personnel can reach the top opening position of the cylindrical storage device through the ladder and the top opening working platform.

[0008] The fixed storage device structure adopted by the present invention has the following characteristics: (1) wall panels, wherein the wall panels and the wall panels are arranged in a cylindrical structure in the longitudinal and transverse directions to isolate the external seawater; (2) The top and bottom reinforcement areas of the wall panels. The top reinforcement area of ​​the wall panels is used for vibratory hammering and serves as a load-bearing structure of the construction platform. The bottom reinforcement area of ​​the wall panels is used for hammering the seabed to prevent curling; (3) The longitudinal and transverse stiffening ribs of the wall panels are welded to the wall panels longitudinally and transversely with steel plates and angle steels to strengthen the wall panel structure and withstand the stress of seawater and storage materials; (4) Bottom sealing concrete, which is used to improve the bearing capacity of the base, isolate the seawater outside the bottom of the storage device, and provide a water-free environment; (5) Ancillary structures, including vertical ladders, top working platforms, top sealing covers, etc., are used for personnel to go up and down the storage device and for work needs through the vertical ladders. The top sealing cover is used to isolate the top external space.

[0009] The present invention has the following beneficial effects: (1) Wide scope of application: The storage device of the present invention has a simple structure and is easy to construct. It can be used to store building materials for the construction of marine engineering structures in complex offshore environments. It can also be used for temporary storage after the exploitation of offshore mineral resources. In special circumstances, it can be used as a civil air defense project.

[0010] (2) Structural safety: The storage device of the present invention uses steel wall plates + longitudinal and transverse stiffening ribs to form a stable cylindrical structure, which can be inserted into the stable seabed surface and can withstand typhoons and severe waves without being damaged.

[0011] (3) The economic benefits are remarkable. The storage device of the present invention has low cost, can be constructed quickly, and requires little resource investment. Multiple groups of storage devices can be used together to improve the efficiency of marine construction and mineral resource mining, and have high economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Elevation drawing for the transport vessel of the offshore fixed storage unit.

[0013] Figure 2 This is an elevation view of the offshore fixed storage device being lifted and turned over by a floating crane.

[0014] Figure 3 Elevation drawing of the offshore fixed storage device being inserted by a floating crane.

[0015] Figure 4 This is the elevation view of the offshore fixed storage unit after construction is completed.

[0016] In the figure: 1-cylindrical storage device, 2-wall plate of storage device, 3-longitudinal and transverse stiffening ribs of storage device, 4-bottom reinforcement area of ​​storage device, 5-top reinforcement area of ​​storage device, 6-top working platform of storage device, 7-vertical ladder of storage device, 8-transport ship, 9-construction water level, 10-floating crane, 11-vibrating hammer, 12-seabed surface, 13-bottom sealing concrete, 14-top sealing cover plate of storage device. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0018] Reference Figure 1 , 2 As shown in , 3 and 4, a method for constructing an offshore fixed storage device according to the present invention comprises the following steps: Step 1: The cylindrical storage device 1 is processed and manufactured in a steel structure factory; Step 2: A gantry crane or a transporter transports the cylindrical material storage device 1 to a transport ship 8, and the transport ship 8 transports the cylindrical material storage device 1 to the construction sea area; Step 3: The cylindrical storage device 1 is inserted into a stable seabed surface; The top reinforcement area 5 of the storage device is hung by the main hook of the floating crane 10, and the bottom reinforcement area 4 of the storage device is coordinated with the overturning frame or the secondary groove of the floating crane 10. The floating crane 10 lifts the overturned cylindrical storage device 1 until it is in an upright state, and the floating crane 10 lifts the cylindrical storage device 1 to the insertion position. The floating crane 10 cooperates with the hydraulic vibration hammer 11 to insert and hit the cylindrical storage device 1 to the inside of the stable seabed; Step 4: Concrete bottom sealing is carried out inside the cylindrical storage device 1; The silt and miscellaneous fillings of the cylindrical storage device 1 are cleaned by using a suction machine, a hanging bucket and a pump pipe. After the cleaning is completed, the bottom sealing concrete 13 inside the cylindrical storage device 1 is constructed by an underwater catheter method. After the bottom sealing concrete 13 reaches the designed strength, the water inside the cylindrical storage device 1 is extracted to form a waterless environment storage space.

[0019] Step 5: Install the storage device auxiliary structure.

[0020] The floating crane 10 is used to install the storage device vertical ladder 7, the top opening working platform 6, the top opening sealing cover plate 14 and other auxiliary structures, and personnel can reach the top opening position of the cylindrical storage device 1 through the ladder 7 and the top opening working platform 6.

[0021] The above-mentioned Figure 3 In the figure, number 9 represents the construction water level, and number 12 represents the seabed surface.

[0022] The embodiments are preferred implementations of the present invention, but the present invention is not limited to the above implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. A method for constructing an offshore fixed storage device, characterized in that: The process includes: Step 1: The cylindrical storage device (1) is processed and manufactured in a steel structure factory; Step 2: A gantry crane or a transporter transports the cylindrical material storage device (1) to a transport ship (8), and the transport ship (8) transports the cylindrical material storage device (1) to the construction sea area; Step 3: The floating crane (10) lifts the overturned cylindrical storage device (1) to the insertion position, and the floating crane (10) cooperates with the hydraulic vibration hammer (11) to insert and hit the cylindrical storage device (1) to reach the stable seabed; Step 4: Suctioning mud and cleaning up miscellaneous fillings inside the cylindrical storage device (1), and pouring leak-proof and bottom-sealing concrete inside the storage device; Step 5: Install the storage device vertical ladder (7), the top opening working platform (6), the top opening sealing cover plate (14) and other auxiliary structures.

2. The offshore fixed storage device construction method according to claim 1, characterized in that: The specific process of step 3 is as follows: The top reinforcement area (5) of the storage device is hung by the main hook of the floating crane (10), and the bottom reinforcement area (4) of the storage device is coordinated by the overturning frame or the secondary groove of the floating crane (10). The floating crane (10) lifts the overturned cylindrical storage device (1) until it is in an upright state. The floating crane (10) lifts the cylindrical storage device (1) to the insertion position. The floating crane (10) cooperates with the hydraulic vibration hammer (11) to insert and hit the cylindrical storage device (1) to reach the inside of the stable seabed.

3. The offshore fixed storage device construction method according to claim 1, characterized in that: The specific process of step 4 is as follows: A suction machine, a grab bucket, and a pump pipe are used to clean the silt and miscellaneous fillings in the cylindrical storage device (1). After the cleaning is completed, an underwater conduit method is used to construct the bottom sealing concrete (13) inside the cylindrical storage device (1). After the bottom sealing concrete (13) reaches the designed strength, the water inside the cylindrical storage device (1) is pumped out to form a waterless environment storage space.

4. The offshore fixed storage device construction method according to claim 1, characterized in that: The specific process of step 5 is as follows: A floating crane (10) is used to install auxiliary structures such as a vertical ladder (7) of the material storage device, a top opening working platform (6), and a top opening sealing cover plate (14), so that personnel can reach the top opening position of the cylindrical material storage device (1) via the ladder (7) and the top opening working platform (6).

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