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Self-returning offshore jacket platform and manufacturing method thereof

A technology for offshore platforms and jackets, which is applied in construction, artificial islands, and infrastructure engineering. It can solve the problems of seldom considering the reset function of the structure, the effect of the structure's anti-vibration effect, and the structure cannot be reset, so as to increase the difficulty of construction, Improved robustness and reset function, and simple construction

Active Publication Date: 2015-09-16
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of simply pouring concrete into the hollow sandwich steel pipe to improve the strength and stiffness is more obvious, but it has little effect on improving the vibration resistance of the structure
[0005] In previous studies on the vibration control of offshore platforms, the reset function of the structure was rarely considered, so the structure could not be reset after being subjected to extreme loads, and could not be put into use, resulting in huge economic losses

Method used

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  • Self-returning offshore jacket platform and manufacturing method thereof
  • Self-returning offshore jacket platform and manufacturing method thereof
  • Self-returning offshore jacket platform and manufacturing method thereof

Examples

Experimental program
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Embodiment 1

[0070] Such as Figure 17a As shown, the connection point of the prestressed external steel tie rod 7 at the connection platform 2 is single.

[0071] This embodiment consists of two parts. As shown in FIG. 1 , an ocean platform frame 1 and an ocean platform 2 are connected. The offshore platform frame 1 mainly includes an offshore platform conduit 3 , an offshore platform cross brace 4 , an offshore platform diagonal brace 5 and a prestressed external steel tie rod 7 .

[0072] The offshore platform conduit 3, such as Figure 2-10 As shown, the inner steel pipe is placed inside the outer steel pipe and is coaxial with the outer steel pipe 301. The interlayer between the inner steel pipe 302 and the outer steel pipe 301 is filled with interlayer concrete 304 . The positions of the inner and outer steel pipes are mainly ensured to be coaxial through the positioning pegs 306 welded on the outer steel pipe 301 . In order to ensure that the offshore platform can become a struc...

Embodiment 2

[0085] Such as Figure 17b As shown, the connection points of the prestressed external steel tie rods 7 at the connection platform 2 are double. This embodiment is the same as implementation 1 and is made up of two parts, the ocean platform frame 1 and the ocean platform 2 are connected to form. The offshore platform frame 1 mainly includes an offshore platform conduit 3 , an offshore platform cross brace 4 and an offshore platform diagonal brace 5 .

[0086] The offshore platform conduit 3 described in Embodiment 2, such as Figures 12 to 15 As shown, it is basically similar to the offshore platform conduit of Scheme 1. The difference is that the variable-diameter inner steel pipe 3010 of the conduit in the offshore platform frame 1 begins to change section at the junction of the outer steel rod 301 and the offshore platform 2, and the diameter of the steel pipe is appropriately reduced to facilitate the insertion of the inner steel pipe 302 of the platform 2. The length of ...

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Abstract

The invention belongs to the field of structural engineering in civil engineering and provides a self-returning offshore jacket platform and a manufacturing method thereof. The self-returning offshore jacket platform solves the problem that an original offshore platform is poor in anti-seismic property and is large in rigidity, high in strength, convenient to construct, good in anti-seismic property and high in durability. The self-returning offshore jacket platform is formed by a platform frame and a platform body, the platform body is arranged on the platform frame, and a plurality of horizontal platform struts and inclined platform struts are arranged among platform pipes. External steel tubes, internal steel tubes and corrugated tubes of the platform pipes are coaxially arranged from outside to inside in a sleeving mode, interlayer concrete is arranged between the external steel tubes and the internal steel tubes and between the internal steel tubes and the corrugated tubes, locating toggle pins are arranged on the external steel tubes and are movably connected with the internal steel tubes, built-in prestressed steel pull rods are arranged in the corrugated tubes, reinforcing ribs are fixedly connected to the outer sides of the external steel tubes, flange plates are fixedly arranged at the top ends of the platform pipes, and the upper ends of the flange plates are connected with the platform body or spliced with platform pipes.

Description

technical field [0001] The invention belongs to the field of structural engineering in civil engineering, and in particular relates to a self-resetting jacket ocean platform and a manufacturing method thereof. Background technique [0002] my country's sea areas are rich in oil and gas resources. With the increasing demand for energy in economic construction, offshore oil and gas exploration and development has good development prospects and huge development potential. As the infrastructure for marine resources development, the offshore platform is the main structural form of the offshore platform in the middle and shallow seas. It fixes the prefabricated jacket at sea by passing the piles through the conduit legs. The jacket and piles are the main load-bearing components, and other equipment floors and work areas are located on the platform. Under the dynamic load of marine environment such as wind, wave, current, ice and earthquake, the vibration response of the structur...

Claims

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Application Information

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IPC IPC(8): E02B17/00E02B17/06
Inventor 张纪刚刘菲菲赵铁军李秋义韩永力
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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