Elastic self-slope drift ice protection device

Abstract

The invention provides an elastic self slope type floating ice protection device. The purpose of the elastic self slope type floating ice protection device is to reduce ice-induced vibration of a protection structure effectively, at the same time, control inclination angles of action surfaces, achieve bending failures of ice sheets, and achieve protection effects of icing disasters at different water levels. The elastic self slope type floating ice protection device is composed of a faceplate, a base plate, a beam, an upper cross bar, a lower cross bar, an upper cross bar spring, a lower cross bar spring, connecting nuts, hollow bolts, limiting nuts, faceplate slide grooves, hinged joints and trusses. According to the elastic self slope type floating ice protection device, the faceplate and the beam form a slope type protection structure capable of changing angles, and the faceplate, the springs, the upper / lower cross bar and the hollow bolts form an energy dissipation system. The purpose of adapting to changes of water levels of protection water areas and controlling the inclination angle of the faceplate through selections of design parameters can be achieved. By combining common characteristics of an elastic energy dissipation device and an inclined-plane floating ice protection device, the elastic self slope type floating ice protection device is suitable for structures of large-scale cofferdams, construction work platforms, bridge foundations and the like.

Description

technical field [0001] The invention belongs to the field of ice impact protection, in particular to an elastic self-slope type drift ice protection device. Background technique [0002] my country is a country seriously affected by ice disasters. There have been many accidents in the Bohai Sea where sea ice overturned offshore platforms. Overall overturning or local damage accidents caused by row impact and extrusion. For more than 100 years, people have conducted systematic research on the problem of ice impact, and successively proposed independent anti-collision devices such as anti-collision piles and anti-collision boxes. This type of structure uses a form of self-sacrifice protection to block the impact of drift ice and is very prone to damage; there are also various types of icebreakers installed on ice-facing structures, the most common being cone-shaped icebreakers, although it can reduce ice loads However, it cannot effectively avoid the ice-induced vibration of ...

AI Technical Summary

Problems solved by technology

For more than 100 years, people have conducted systematic research on the problem of ice impact, and successively proposed independent anti-collision devices such as anti-collision piles and anti-collision boxes. This type of structure uses a form of self-sacrifice protection to block the impact of drift ice and is very prone to damage; there are also various types of icebreakers installed on ice-facing structures, the most common being cone-shaped icebreakers, although it can reduce ice loads However, it cannot effectively avoid ice-induced vibration of the structure; in addition, the slope-type ice-facing structure surface design is also a common anti-icing method. Bending damage, which can not only greatly reduce the horizontal ice load but also break up a large area of ​​ice sheet to prevent its accumulation and blockage, but this kind of protection method and structural form is still a head-to-head impact damage directly acting on the ice sheet and structure In the process, it will also cause strong shaking of the protected structure due to the ice excitation load

[0003] In reality, ice-induced vibration will cause structural fatigue damage or damage to upper facilities, reducing the durability of the structure

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