JP2004074872A - Opening structure of deck board girder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening structure of a deck board girder which can sufficiently secure girder strength even if a long ellipse opening is provided, can reduce the amount of whole equipment by making arrangement of the equipment easy and enlarging the sizes of a duct, a pipe and a cable run or the like, and cope with the change without spending a lot of labor hours and cost for changing work of the hull even when the arrangement of the equipment is changed. <P>SOLUTION: The opening structure of the deck board girder is constituted by providing the ellipse opening on the web of the deck board girder along the longitudinal direction, forming a spigot along the opening edge of the ellipse opening, arranging a flat bar perpendicular to the web of the deck board girder connecting between vertical spigots at the central part inside of the ellipse opening, and arranging the rib on the web of the deck board girder vertically located on the spigot on the same plane as the flat bar. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an opening structure of a deck girder used for a deck structure of a hull of a general merchant ship, a passenger ship, a ferry or the like.
[0002]
[Prior art]
FIG. 3 is a cross-sectional view showing a conventional deck girder structure of a hull, and FIG. 4 is a partial cross-sectional view of a conventional deck girder used in the deck girder structure.
[0003]
In the figure, reference numeral 1 denotes a ship-side cross beam, on which a deck cross beam 2 is disposed in a horizontal direction with respect to the ship-side cross beam 1, and a deck 3 is disposed on the upper surface of the deck cross beam 2.
[0004]
Reference numeral 4 denotes a web of the deck cross beam 2, and a slot 5 is provided at a predetermined position on the upper edge of the web 4, and a longitudinal supporting bone 6 is inserted into the slot 5 and arranged. .
[0005]
Reference numeral 7 denotes a circular opening provided in the web 4 of the deck cross beam 2 for arranging outfittings such as ducts, pipes, electric lines, and the like, and 8 is slightly smaller than the circular opening 7 depending on the outfittings to be installed. An oval opening 9 having a width is a face material forming a lower edge of the deck cross beam 2.
[0006]
[Problems to be solved by the invention]
The opening structure of the conventional deck girder 2 used in the deck girder structure of the hull is such that the opening provided in the web 4 of the deck girder 2 is formed from the circular opening 7 or the circular opening 7 from the viewpoint of the strength of the girder material. The duct or pipe is inserted through the circular opening 7 or the elliptical opening 8 having a width slightly larger than the circular opening 7 because the oblong opening 8 has to be slightly widened. In addition, there is a problem that the arrangement of the outfitting parts such as the electric circuit is restricted by the dimension, and it is difficult to arrange the outfitting parts.
[0007]
In addition, in the conventional opening structure of the deck cross beam 2, since the size of the ducts, pipes, electric lines, and the like to be provided cannot be increased, not only the total amount of these outfitting parts cannot be reduced, but also the outfitting parts of the outfitting parts cannot be reduced. When the arrangement is changed, there is a problem that the hull change work requires much labor and cost.
[0008]
The present invention has been made to solve the above conventional problems, it is possible to sufficiently secure the girder material even if a long oval opening is provided, it is easy to arrange the fittings, By increasing the size of the ducts, pipes, electric lines, etc., to be installed, the overall volume of these outfittings can be reduced. The present invention provides a deck girder opening structure which is extremely effective in practical use and which can be dealt with without increasing costs.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the invention of claim 1 is characterized in that an oval opening is provided in a web of a deck girder along a longitudinal direction, and a spigot is formed along an opening edge of the oval opening. The opening structure of the deck girder is as follows.
[0010]
Thus, even if the oblong opening is long, the spigot formed along the opening edge of the oblong opening can sufficiently secure the strength of the girder member.
[0011]
According to a second aspect of the present invention, a flat bar perpendicular to the web of the deck girder, which connects the upper and lower spigots, is disposed at the center of the oval opening. The opening structure of the deck girder described in (1).
[0012]
As a result, even if the oblong opening is long, the spigot formed along the opening edge of the oblong opening and the flat bar arranged at the center of the oblong opening further increase the strength of the girder material can do.
[0013]
According to a third aspect of the present invention, there is provided the deck girder according to the second aspect, wherein ribs are provided on the web of the deck girder located above and below the spigot on the same plane as the flat bar. An opening structure was adopted.
[0014]
Thereby, even if the oblong opening is made long, the spigot formed along the opening edge of the oblong opening, the flat bar disposed at the center of the oblong opening, and the spigot are located above and below the spigot. The ribs provided on the web of the deck girder can further strengthen the girder material.
[0015]
Therefore, according to the opening structure of the deck girder according to the first to third aspects of the present invention, it is possible to secure the strength of the girder material even if the elongated oval opening is provided, and it is easy to dispose the outfitting parts. By increasing the size of the ducts, pipes, electric lines, etc. to be installed, it is possible to reduce the volume of these outfittings as a whole, and even if the arrangement of outfittings is changed, it takes much time and labor to change the hull It is possible to easily respond without increasing costs.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment of the deck girder opening structure of the present invention will be described with reference to FIGS.
[0017]
FIG. 1 is a partial cross-sectional view of a deck cross beam having an opening structure of a deck girder according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG.
[0018]
In the drawings, members corresponding to those shown in FIGS. 3 and 4 are denoted by the same reference numerals, and redundant description will be omitted.
[0019]
In the embodiment shown in FIGS. 1 and 2, the web 4 of the deck cross beam 2 is provided with a circular opening 7 and an oblong opening 10 which is longer than the conventional oval opening 8. It goes without saying that the circular opening 7 and the oval opening 8 may be appropriately mixed with the elongated oval opening 10 as needed.
[0020]
Reference numeral 11 denotes a spigot provided in a strip shape along the opening edge of the long elliptical opening 10 and is welded to the web 4 of the deck cross beam 2 at a right angle so that the cross section of the connecting portion becomes T-shaped. I have.
[0021]
Reference numeral 12 denotes a flat bar disposed at the center of the elongated oval opening 10 and upper and lower ends thereof are respectively welded to spigots 11 to connect the upper and lower spigots 11 to each other. It is arranged to be perpendicular to.
[0022]
13a and 13b are ribs arranged on the web 4 of the deck cross beam 2 located above and below the spigot 11 on the same plane as the flat bar 12, and the upper rib 13a is at the lower end of the spigot 11 across the web 4. The side ends are inserted into the web 4 and the upper ends are inserted into the slots 5 and welded to the longitudinal supporting bones 6 supporting the deck 3.
[0023]
On the other hand, the lower rib 13b is formed in a right triangle while the upper rib 13a is formed in a rectangular shape, and the upper end is welded to the spigot 11 and the side end is welded to the web 4 with the web 4 interposed therebetween. Have been.
[0024]
However, the lower rib 13b may be formed in a rectangular shape like the upper rib 13a and welded to the face material 9.
[0025]
In the embodiment shown in FIGS. 1 and 2, the girder strength of the deck cross beam 2 is increased by the spigot 11, the flat bar 12, and the rib 13. However, when the oval opening 10 is not so long. In order to increase the strength of the girder using only the spigot 11, the flat bar 12 and the rib 13 are additionally provided in accordance with the length of the oval opening 10 so as to sequentially increase the girder strength of the deck horizontal girder 2. You may.
[0026]
In the embodiment shown in FIGS. 1 and 2, a flat bar 12 is provided at the center of the long oval opening 10 at the center thereof, and the long oval opening 10 is bisected. , The elliptical opening 10 divided into two equal parts is longer than the conventional oval opening 8.
[0027]
【The invention's effect】
The opening structure of the deck girder according to claim 1 is formed by providing an oval opening along the longitudinal direction on the web of the deck girder and forming a spigot along the opening edge of the oval opening. Even if the opening is long, the spigot formed along the opening edge of the oval opening can sufficiently secure the strength of the girder member.
[0028]
In addition, the opening structure of the deck girder according to claim 2 is configured by arranging a flat bar perpendicular to the web of the deck girder, which connects between upper and lower spigots, at a central portion in the oval opening. Therefore, even if the oblong opening is made long, the spigot formed along the opening edge of the oblong opening and the flat bar arranged at the center of the oblong opening further strengthen the girder material strength. be able to.
[0029]
Further, the opening structure of the deck girder according to claim 3 is configured by arranging ribs on the web of the deck girder located above and below the spigot on the same plane as the flat bar, so that the oval opening is formed. The spigot is formed along the opening edge of the oval opening, the flat bar is located at the center of the oval opening, and the deck girder web is located above and below the spigot. The ribs provided can further enhance the strength of the girder members.
[0030]
Therefore, according to the opening structure of the deck girder according to the inventions of claims 1 to 3, even if the elongated oval opening is provided, the strength of the girder material can be sufficiently ensured, and the installation of the outfitting parts is easy. By increasing the size of the ducts, pipes, electric lines, etc. to be installed, the overall volume of these outfittings can be reduced, and even when the outfitting arrangement is changed, many It is possible to provide a practically effective deck girder opening structure that can be dealt with without any trouble and cost.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of a deck cross beam having an opening structure of a deck girder according to an embodiment of the present invention.
FIG. 2 is an enlarged sectional view taken along the line AA in FIG.
FIG. 3 is a cross-sectional view showing a conventional deck girder structure of a hull.
FIG. 4 is a partial cross-sectional view of a conventional deck cross beam.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ship side girder 2 Deck girder 3 Deck 4 Web 5 Slot 6 Longitudinal support bone 7 Circular opening 8 Oval opening 9 Face material 10 Long oval opening 11 Spigot 12 Flat bar 13a Upper rib 13b Lower rib

Claims (3)

An opening structure of a deck girder, wherein an oval opening is provided in a web of the deck girder along a longitudinal direction, and a spigot is formed along an opening edge of the oval opening. The opening structure of a deck girder according to claim 1, wherein a flat bar perpendicular to a web of the deck girder is provided at a central portion in the oval opening and connects the upper and lower spigots. The opening structure of a deck girder according to claim 2, wherein ribs are provided on webs of the deck girder located above and below the spigot on the same plane as the flat bar.

Images