Transition node structure of non-continuous superstructure of ro-ro passenger ship

Abstract

The present invention provides a non-continuous superstructure transition node structure for a ro-ro passenger ship, comprising: a transition bracket, a main deck, an upper deck, and a superstructure disposed on the main deck; the upper deck is connected to the superstructure and is located above the main deck; the connection portion of the main deck adjacent to the superstructure is recessed downward to form a transition bracket groove; the transition bracket is connected between the upper deck, the superstructure, and the main deck, and the side of the transition bracket away from the superstructure is arc-shaped; the bottom of the transition bracket is disposed in the transition bracket groove, and the upper surface of the bottom of the transition bracket smoothly transitions to the upper surface of the main deck; the lower surface of the top of the transition bracket smoothly transitions to the lower surface of the upper deck. The non-continuous superstructure transition node structure for a ro-ro passenger ship of the present invention can greatly reduce stress concentration, and at the same time, the length of the transition bracket does not need to be too long, which is conducive to saving space on the ship.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a non-continuous superstructure transition node structure for a ro-ro passenger ship. Background Art

[0002] For passenger ships, ro-ro passenger ships, passenger-cargo ships, and other types of ships, the superstructure is sometimes discontinuous throughout the vessel. For example, the superstructure may not cover the entire hull, but only the forward half. The rear end of the superstructure is located midship. Such superstructure designs require a reasonable transition design.

[0003] See also Figure 1 At present, for bulkheads that need to be longitudinally transitioned, the following is usually done at their longitudinal discontinuities: Figure 1 One end of the bracket is connected to the longitudinal bulkhead and the other end is connected to the main deck of the hull.

[0004] A drawback of the existing technology is the high stress concentration at the toe end. To minimize stress concentration in the bracket, existing technologies often use bracket designs with a slope of 20 degrees or less. This bracket design facilitates load transfer from the longitudinal continuous member below the deck to the hatch coaming structure. However, significant stress concentration is unavoidable at the bracket toe end, where the stress is significantly higher than in other surrounding areas. Excessively high toe stress can cause structural fatigue and lead to fatigue failure. Furthermore, a too small slope can result in excessively long brackets, wasting hull space. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a non-continuous upper transition node structure for a ro-ro passenger ship, which can greatly reduce stress concentration. At the same time, the length of the transition bracket does not need to be too long, which is conducive to saving space on the ship.

[0006] In order to achieve the above-mentioned objectives, the present invention provides a non-continuous superstructure transition node structure for a passenger and vehicle ferry, comprising: a transition bracket, a main deck, an upper deck and a superstructure arranged on the main deck; the upper deck is connected to the superstructure and is located above the main deck; the connection portion of the main deck adjacent to the superstructure is recessed downward to form a transition bracket groove; the transition bracket is connected between the upper deck, the superstructure and the main deck, and the side of the transition bracket away from the superstructure is arc-shaped; the bottom of the transition bracket is arranged in the transition bracket groove, and the upper surface of the bottom of the transition bracket smoothly transitions to the upper surface of the main deck; the lower surface of the top of the transition bracket smoothly transitions to the lower surface of the upper deck.

[0007] Preferably, the top of the transition bracket is an integral structure with the upper deck.

[0008] Preferably, the panel of the transition bracket is butted against the main deck and smoothly transitions thereto.

[0009] Preferably, the main deck is provided with pits, and the longitudinal components of the main deck are aligned, continuous and smoothly transitioned with the longitudinal structures on the main deck.

[0010] The present invention adopts the above technical solution, so it has the following beneficial effects:

[0011] The discontinuous upper transition node structure of the ro-ro passenger ferry of the present invention integrates the face plate of the transition bracket with the main deck by providing a transition bracket groove, thereby eliminating high stress points due to structural discontinuity between the transition bracket and the main deck, thereby greatly reducing stress concentration. Furthermore, since the transition bracket does not require a long side, the length of the transition bracket does not need to be too long, which helps save space on board. Furthermore, the face plate of the transition bracket is also integrated with the strong transverse beam face plate of the upper deck, eliminating the high stress point at the toe end where the transition bracket connects to the longitudinal bulkhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the existing non-continuous upper transition node structure of the ro-ro passenger ship;

[0013] Figure 2 Schematic diagram of the structure of a discontinuous upper construction transition node structure of a ro-ro passenger ship according to an embodiment of the present invention. DETAILED DESCRIPTION

[0014] The following is based on the attached Figure 2 , gives the preferred embodiment of the present invention, and describes it in detail so that the functions and features of the present invention can be better understood.

[0015] See also Figure 2 A non-continuous superstructure transition node structure for a ro-ro passenger ship according to an embodiment of the present invention comprises: a transition bracket 1, a main deck 2, an upper deck 3, and a superstructure 4 arranged on the main deck 2; the upper deck 3 is connected to the superstructure 4 and is located above the main deck 2; the connection portion of the main deck 2 adjacent to the superstructure 4 is recessed downward to form a transition bracket groove 21; the transition bracket 1 is connected between the upper deck 3, the superstructure 4, and the main deck 2, and the side of the transition bracket 1 away from the superstructure 4 is arc-shaped; the bottom of the transition bracket 1 is arranged in the transition bracket groove 21, and the upper surface of the bottom of the transition bracket 1 smoothly transitions to the upper surface of the main deck 2; and the lower surface of the top of the transition bracket 1 smoothly transitions to the lower surface of the upper deck 3.

[0016] In this embodiment, the top of the transition bracket 1 and the upper deck 3 form an integrated structure.

[0017] The face plate of the transition bracket 1 is butted against the main deck 2 and forms a smooth transition.

[0018] The main deck 2 is provided with pits, and the longitudinal components of the main deck 2 are aligned with the longitudinal structures on the main deck 2 and have a smooth transition.

[0019] The non-continuous upper transition node structure of a ro-ro passenger ship according to an embodiment of the present invention can reduce the stress concentration at the toe end of the longitudinal upper transition bracket 1, making the stress on the entire transition bracket 1 more uniform. It can also reduce the use of steel at the end of the transition bracket 1. By providing a transition bracket groove 21, the panel of the transition bracket 1 and the main deck 2 are made into a whole, so that there is no high stress point of structural discontinuity between the transition bracket 1 and the main deck 2, thereby greatly reducing the stress concentration phenomenon; at the same time, since the transition bracket 1 does not require a long side, the length of the transition bracket 1 does not need to be too long, which is conducive to saving space on the ship; in addition, the panel of the transition bracket 1 and the strong transverse beam panel of the upper deck 3 are also made into one piece, eliminating the high stress point at the toe end of the transition bracket 1 connected to the longitudinal bulkhead.

[0020] The present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A non-continuous upper construction transition node structure for a ro-ro passenger ship, characterized in that: include: transition bracket, main deck, upper deck and superstructure arranged on the main deck; the upper deck is connected to the superstructure and is located above the main deck; The connection portion of the main deck adjacent to the superstructure is recessed downward to form a transition bracket groove; The transition bracket is connected between the upper deck, the superstructure and the main deck, and the side of the transition bracket away from the superstructure is arc-shaped; The bottom of the transition bracket is arranged in the transition bracket groove, and the upper surface of the bottom of the transition bracket smoothly transitions to the upper surface of the main deck; the lower surface of the top of the transition bracket smoothly transitions to the lower surface of the upper deck; The face plate of the transition bracket is butted against the main deck and smoothly transitions thereto.

2. The non-continuous upper construction transition node structure of a ro-ro passenger ship according to claim 1 is characterized in that: The top of the transition bracket is an integral structure with the upper deck.

3. The non-continuous upper construction transition node structure of a ro-ro passenger ship according to claim 1 is characterized in that: The main deck is provided with pits, and the longitudinal components of the main deck are aligned, continuous and smoothly transitioned with the longitudinal structures on the main deck.

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