Ultra-large self-elevating gravel laying and leveling ship

Abstract

The invention provides an ultra-large self-elevating gravel laying and leveling ship. The ultra-large self-elevating gravel laying and leveling ship comprises a ship body, six pile legs, a gravel conveying mechanism and a gravel throwing mechanism, wherein, the pile legs are connected to the two sides of the two ends of the ship body and the two sides of the middle of the ship body through lifting tower mechanisms correspondingly; the ship body comprises a top deck, a middle deck and a main deck which are sequentially arranged in a stacked mode; the main deck forms a moon pool; the top deck and the middle deck are hollowed out corresponding to the moon pool; the gravel throwing mechanism is arranged on the top deck; and the gravel conveying mechanism is arranged on the ship body and extends to the gravel throwing mechanism. According to the ultra-large self-elevating gravel laying and leveling ship, on the basis that the strength and rigidity of the ship body are met, the width and the length of the moon pool in the middle of the ship body are greatly increased, therefore, the seabed gravel laying and leveling area is remarkably increased and can be increased by about one time to the maximum, and the seabed immersed tunnel building capacity and the construction efficiency are greatly improved.

Description

technical field [0001] The invention relates to the field of gravel laying and screeding ships, in particular to a super-large self-elevating gravel laying and screeding ship. Background technique [0002] Submarine tunnels are generally connected by immersed tubes, and the stone-paving ship serves to pave the subsea foundation and is helpful for the implantation of immersed tubes. In the construction of subsea tunnels, leveling the foundation of immersed tubes is an essential construction process, so the laying and leveling ship of gravel is an indispensable core equipment for leveling the foundation of subsea tunnels. [0003] Since the 1990s, my country's port construction has gradually moved towards deep water and large-scale port construction. As a key process, the leveling of the riprap foundation bed has always been a key problem that plagues the operation. With the successful construction of the super project "Hong Kong-Zhuhai-Macao Bridge" and the start of the "Sh...

AI Technical Summary

Problems solved by technology

If the length and width of the moon pool are further increased on this basis, the span of the hull structure and the load it receives will increase. In order to meet the strength and stiffness requirements of the hull structure, the weight of the hull structure will inevitably be greatly increased.

At the same time, in order to meet the larger rock-throwing capacity requirements, the weight of the rock-throwing system will also be greatly increased.

For the existing hull structure and the arrangement of four legs, the capacity of the lifting system has an upper limit, which cannot meet the significantly increased weight of the hull structure and the weight of the rock-throwing equipment

[0013] 2) The longitudinal span of the hull structure is large, and the rigidity of the supporting structure of the riprap driving track is weak, resulting in large vertical deformation of the track and affecting the leveling accuracy of the gravel

[0014] 3) The load of a single pile leg and the lifting system is relatively large, and the fatigue life of the pile leg and the service life of the lifting system are limited

[0016] 5) The longitudinal belt conveyor is arranged on the outside of the pile legs, so that the width of the top deck on both sides of the center line of the hull is unequal, that is, the width of the top deck on the side where the longitudinal belt conveyor is arranged exceeds the width of the main deck by a large amount, resulting in the One side cannot be docked and berthed, and the ship can only use the other side to berthed and berthed, which affects the use of ships

Images