Offshore large-diameter pile foundation with ice-resistant structure

A pile foundation and large-diameter technology, applied in the field of marine engineering, can solve problems such as difficult construction, large vertebral volume, and large engineering volume, and achieve good ice-breaking effect and small edge contact area

Inactive Publication Date: 2016-11-16
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Usually, the anti-icing structure of the pile foundation is designed as a conical structure. For large-diameter piles, if the conical structur

Method used

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  • Offshore large-diameter pile foundation with ice-resistant structure
  • Offshore large-diameter pile foundation with ice-resistant structure
  • Offshore large-diameter pile foundation with ice-resistant structure

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] See attached picture:

[0026] The offshore large-diameter pile foundation with an ice-resistant structure is formed by welding a certain number of ice-resistant standard parts 1 symmetrically and evenly around the steel pile foundation. The ice-resistant standard parts welded around the steel pile foundation are provided with a main stiffened plate 7 and two upper and lower secondary stiffened plates 8 to improve the lateral stiffness of the ice-resistant standard parts. The ice-resistant standard parts 1 are evenly distributed around the pile foundation in an axisymmetric state, and the ice-breaking blades 2 face radially outward, thereby forming an ice-resistant structure.

[0027] The anti-ice standard part 1 has a symmetrical structure up and down, and two curved ice-breaking blades 2 concave inward are arranged symmetrically on the outside. The ice-breaking blades 2 are in the shape of a cutting edge. , the stress concentration on the contact surface makes the se...

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PUM

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Abstract

The present invention discloses an offshore large-diameter pile foundation with an ice-resistant structure. The offshore large-diameter pile foundation with the ice-resistant structure comprises a plurality of ice-resistant standard parts that are welded in a circle symmetrically and uniformly around the pile foundation made of steel. A primary stiffened plate and upper and lower secondary stiffened plates are arranged through the plurality of ice-resistant standard parts. The plurality of ice-resistant standard parts, the primary stiffened plate, and the upper and lower secondary stiffened plates are connected and fixed to form the ice-resistant structure. The ice-resistant standard parts provided by the present invention are each provided with icebreaking blades, such that concentrated stress is produced on sea ice, and the sea ice thus is easy to break; the icebreaking blades are each in an inwardly recessed arc shape, which is also conducive to breaking sea ice; ice blocking lugs force sea ice to turn over and fall off, and prevent the sea ice from contacting with the pile foundation; moreover, the ice-resistant standard parts are distributed axisymmetrically around the pile foundation, and can resist the effect of sea ice in any direction.

Description

Technical field: [0001] The invention relates to the technical field of ocean engineering, in particular to an offshore large-diameter pile foundation with an ice-resistant structure. Background technique: [0002] my country's Liaodong Bay, Bohai Bay and Laizhou Bay freeze in winter, and the freezing conditions vary according to water depth and offshore distance. Drift ice forms in the deep water area far from the coast, fixed ice forms in the shallow water area near the coast, and accumulated ice (ice ridges) forms in extremely shallow seas, intertidal zones, and flat areas. Liaohe beach sea ice situation is heavy, the 50-year return period of fixed ice thickness is 50cm, and the maximum velocity of drift ice is 1.0~1.1m / s. In Liaodong Bay on January 11, 2010, the maximum outer edge of the floating ice reached 131km, and the thickness of a single layer of sea ice exceeded 30cm. In 2010, Bayuquan Port in Yingkou, known as the northernmost ice-free port in China, had a loc...

Claims

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Application Information

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IPC IPC(8): E02D27/12E02B17/00
CPCE02B17/0021E02D27/12
Inventor 刘洁群刘金龙刘伟
Owner HEFEI UNIV
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