Submarine oil pipeline balance weight layer structure and construction method thereof
A technology for oil pipelines and construction methods, applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as weak shear resistance, concrete fracture, and counterweight layer fracture, and achieve overall structural strength The effect of improving, avoiding fracture, and increasing shear strength
Active Publication Date: 2017-05-31
FOSHAN UNIVERSITY
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Problems solved by technology
[0002] In the existing technology, the submarine pipeline is an important facility for offshore oil and gas development, and the problem of counterweight layer fracture often occurs during laying construction, which has an adverse effect on the normal operation of the pipeline
The main reason for the fracture of the counterweight layer is the low shear strength and the weak fixing of the steel mesh
The existing reinforced concrete oil pipeline counterweight layer has weak shear resistance and is prone to concrete fracture, making it detached from the steel pipe or even slipping into the water, which not only affects the quality of submarine pipeline laying, but also adversely affects the normal operation of the pipeline
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0023] see Figure 1-Figure 3 As shown, the present invention provides a counterweight layer structure of a submarine oil pipeline, which includes concrete 4, hoops 1, stirrups 3 and stress bars 2, and the hoops 1 are set on the bottom of the submarine oil pipeline 5. Periphery, the stirrups 3 and the stress bars 2 are fixedly connected to the periphery of the hoop 1, the stirrups 3 are cross-connected with the stress bars 2, and the concrete 4 is poured on the sti...
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Abstract
The invention provides a submarine oil pipeline balance weight layer structure which comprises concrete, hoops, stirrups and stress ribs. The hoops are arranged on the periphery of a submarine oil pipeline in a sleeving manner, and multiple small steel nails are welded to the hoops. The stirrups and the stress ribs are connected in a crossed manner to form a reinforcing steel bar net to be hung on the small steel nails at the outer portions of the hoops, and the concrete is poured among the stirrups, the stress ribs and the hoops. Compared with the prior art, the submarine oil pipeline balance weight layer structure and a construction method thereof have the follow beneficial effects that the hoops are fixedly connected to the outer wall of the oil pipeline through bolts, the stress ribs and the stirrups are arranged in the crossed manner to form the reinforcing steel bar net to be arranged on the periphery of the oil pipeline and hung to the hoops through the steel nails, the concrete is poured among the stress ribs, the stirrups and the hoops to form a balance weight layer, and the concrete is firmly wrapped on the periphery of the oil pipeline. Due to the strengthening effect of the stress ribs, the stirrups and the hoops, the shearing strength of the balance weight layer is greatly improved, the overall structural strength is also improved to a certain degree, and the problem of cracking of the balance weight layer is solved.
Description
technical field [0001] The invention relates to the technical field of seabed oil transportation devices, in particular to a counterweight layer structure of a seabed oil pipeline and a construction method thereof. Background technique [0002] In the prior art, the submarine pipeline is an important facility for offshore oil and gas development, and the problem of counterweight layer fracture often occurs during the laying construction, which has an adverse effect on the normal operation of the pipeline. The main reason for the fracture of the counterweight layer is the low shear strength and the weak fixing of the steel mesh. The existing reinforced concrete oil pipeline counterweight layer has weak shear resistance and is prone to concrete fracture, making it detached from the steel pipe, or even slipping into the water, which not only affects the quality of submarine pipeline laying, but also adversely affects the normal operation of the pipeline. Contents of the inven...
Claims
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Login to View More IPC IPC(8): F16L1/12F16L1/24
CPCF16L1/123F16L1/24
Inventor 张国学徐世祥卢娟
Owner FOSHAN UNIVERSITY