JP3686386B2 - Panel for floating pier, steel shell for floating pier, and method for manufacturing floating pier - Google Patents

Description

[0001]
TECHNICAL FIELD The present invention relates to a floating pier panel, a floating pier steel shell, and a method of manufacturing a floating pier , and in particular, a panel for forming a floating pier composed of a composite structure of steel and concrete, a floating pier steel shell, and a floating pier bridge . It relates to a manufacturing method.
[0002]
[Prior art]
FIG. 5 shows a general floating pier used for berthing of ships, passage of passengers, and cargo handling. The floating pier 1 is a floating body moored by a mooring line (not shown) on the sea surface near the quay 3. A connecting bridge 2 is bridged between the quay 3 and the floating pier 1 in order to allow passengers to pass and load handling.
[0003]
FIG. 6 is a sectional view showing the structure of the floating pier 1 composed of a composite structure of steel and concrete. As is apparent from the figure, the floating pier 1 is composed of a steel shell 31, a stud 32, a reinforcing bar 33, and a concrete layer 34. More specifically, after a hollow steel shell 31 having a desired shape is formed by appropriately joining a plurality of steel panels, a floating material 1 is cast by placing a concrete material on the outer surface of the steel shell 31. To make up. The stud 32 and the reinforcing bar 33 provided on the outer surface of the steel shell 31 are for preventing the displacement of the placed concrete material.
[0004]
[Problems to be solved by the invention]
By the way, in the floating pier 1 which consists of a composite structure of steel and concrete as described above, the dead load before placing the concrete material on the steel shell 31 and the dead load when placing the concrete material are supported. It is necessary to ensure as much rigidity as possible.
[0005]
For this reason, conventionally, as shown in FIG. 7, the stiffening ribs 35 are welded to the inner surface of the steel shell 31, and the dead load before placing the above-described concrete material and the concrete material are placed. Stiff enough to support dead loads.
[0006]
However, when the steel stiffening rib 35 is welded to the inner surface of the steel shell 31 as described above, the manufacturing cost increases as much as the welding work, and the steel material corresponds to the weight of the stiffening rib 35. Increases in weight. Furthermore, in order to prevent welding distortion at the time of welding the stiffening rib 35, the thickness of the steel shell 31 must be increased, and the steel material weight in the floating pier 1 is further increased.
[0007]
In view of the above circumstances, an object of the present invention is to provide a floating pier panel, a steel shell for a floating pier, and a method for manufacturing a floating pier that can suppress the manufacturing cost at a low cost and suppress an increase in the weight of the steel material. And
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a floating pier panel according to claim 1 constitutes a steel shell of the floating pier, and the steel shell is constituted in a floating pier panel in which a concrete material is cast on an outer surface. A steel plate / concrete composite beam including a part of a reinforcing bar and a stud disposed on the outer surface of the steel plate is provided in advance .
[0009]
According to this invention, the rigidity of the steel shell can be improved by the steel plate / concrete composite beam including a part of the reinforcing bar and the stud disposed on the outer surface of the steel plate constituting the steel shell. It becomes possible to support the dead load before and after placing the concrete material without welding the stiffening ribs made of metal.
[0010]
Further, the steel shell for a floating pier according to claim 2 is a steel slab / concrete composite beam including a stud and a part of a reinforcing bar arranged on the outer surface in a steel pier for a floating pier in which a concrete layer is cast on the outer surface. It is characterized by comprising a steel plate panel provided in advance.
[0011]
According to the present invention, the rigidity of the steel shell for the floating pier can be improved by the steel plate / concrete composite beam including a part of the reinforcing bar and the stud disposed on the outer surface of the steel plate panel. It is possible to support the dead load before and after the concrete material is cast without welding the stiffening ribs.
[0012]
Moreover, the manufacturing method of the floating pier according to claim 3 comprises a steel shell that secures water tightness by a steel plate panel preliminarily provided with a steel plate / concrete composite beam containing a part of a reinforcing bar and a stud arranged on the outer surface. Then, a concrete material is placed on the outer surface of the steel shell.
[0013]
According to the present invention, the rigidity of the steel shell can be improved by the steel plate / concrete composite beam including a part of the reinforcing bar and the stud disposed on the outer surface of the steel plate panel. It becomes possible to support the dead load before and after placing the concrete material without welding the rib.
[0014]
Exemplary embodiments of a floating pier panel, a floating pier steel shell, and a method of manufacturing a floating pier according to the present invention will be described below in detail with reference to the accompanying drawings.
[0015]
1 is a perspective view conceptually showing a steel shell of a floating pier that is an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a floating view shown in FIG. FIG. 4 is a conceptual diagram sequentially illustrating the manufacturing process of the floating pier panel shown in FIG. 2.
[0016]
First, the structure of the floating pier will be described based on FIGS. 1 to 3. The floating pier 1 illustrated here is used for berthing of a ship, passage of passengers, and cargo handling like the one shown in FIG. 5. A steel frame 11 and a panel attached to the steel frame 11 12 and a concrete layer 13 placed on the outer surface of the panel 12.
[0017]
The steel frame 11 forms the skeleton of the floating pier 1 as shown in FIG. In the present embodiment, a steel frame 11 having a rectangular parallelepiped frame shape is formed by welding three types of structural members 11a, 11b, and 11c to each other.
[0018]
The panel 12 is a steel plate having a rectangular flat plate shape. As shown in FIG. 3, the panel 12 is provided with a stud 22 and a reinforcing bar 23 on its outer surface, and two reinforced concrete beams 24 are provided. These beams 24 are provided so as to include a part of the stud 22 and the reinforcing bar 23 described above, and are arranged in parallel to each other in a manner along one side of the panel 12. More specifically, as shown in FIG. 4, after the stud 22 and the reinforcing bar 23 are arranged on the outer surface of the panel 12, the outer surface of the panel 12 is installed by placing a mold 25 and placing a concrete material. The beam 24 is provided on the surface. The operation of providing the studs 22, the reinforcing bars 23 and the beams 24 on the panel 12 may be performed in advance in a factory or may be performed in a local assembly yard. Needless to say, the mold 25 is removed from the outer surface of the panel 12 after the beam 24 is solidified.
[0019]
As shown in FIG. 2, each beam 24 after solidification has a rectangular parallelepiped shape having the same cross-sectional area, and the individual heights of the concrete layers 13 to be formed on the outer surface of the panel 12. It is formed to be smaller than the thickness.
[0020]
Hereinafter, a method for manufacturing the floating pier 1 using the steel frame 11 and the panel 12 will be described.
[0021]
First, the steel shell 10 of the floating pier 1 is configured by sequentially pasting a plurality of panels 12 on the outer surface of the steel frame 11. That is, the hollow steel shell 10 in which the entire outer surface is covered with the panel 12 is formed by welding the steel frame 11 and the panel 12 and between the adjacent panels 12 respectively. In this case, the panel 12 has a rectangular shape in which one side is substantially the same length as the length of the structural member 11a and the other side is substantially the same length as the length obtained by appropriately dividing the structural member 11c. A rectangular shape having a length substantially the same as the length of the structural member 11b, the other side being substantially the same length as the length obtained by appropriately dividing the structural member 11c, and a side having a length substantially the same as the length of the structural member 11a Then, it is necessary to prepare a rectangular shape having the other side substantially the same length as the length of the structural member 11b. Seal welding is preferably performed between the steel frame 11 and the panel 12 and between adjacent panels 12 so as to ensure watertightness.
[0022]
Here, according to the steel shell 10 described above, since the beams 24 of the rebar 23 concrete are provided on the respective panels 12 constituting the steel shell 10, the rigidity thereof is remarkably improved. Therefore, it is possible to reliably support the dead load when placing the concrete material as well as the dead load before placing the concrete material without providing steel stiffening ribs on the inner surface of the panel 12. It becomes. Thereby, as long as a formwork is appropriately installed around the steel shell 10 and a concrete material is placed, the floating pier 1 having a desired shape including the concrete layer 13 on the outer surface of the steel shell 10 is configured. Will be able to. The completed floating pier 1 is towed to the installation site by a tug boat, moored by a mooring line, etc., and then used by linking the connecting bridge 2 to the quay 3 as shown in FIG. The
[0023]
According to the floating pier 1 configured as described above, the work of welding the steel stiffening ribs is not necessary, so that the manufacturing cost can be reduced. In addition, as a result of eliminating the need for the stiffening ribs, it is not necessary to take into account the welding distortion associated with the stiffening rib welding. There is no fear of increasing the number of people.
[0024]
Furthermore, since the beam 24 provided on the panel 12 is formed by placing a part of the concrete layer 13 in advance, it does not affect the weight or appearance of the floating pier 1 in any way.
[0025]
Moreover, since the watertightness of the steel shell 10 is ensured by seal welding between the steel frame 11 and the panel 12 and between the adjacent panels 12, the concrete layer 13 is temporarily damaged. Even if it comes, there is no risk of flooding.
[0026]
In the above-described embodiment, when the steel shell 10 is configured, seal welding is performed between the steel frame 11 and the panel 12 and between the adjacent panels 12. The steel shell may be configured by bolting after filling a sealant.
[0027]
In the above-described embodiment, two beams 24 are provided so as to be parallel to each other. However, the number, shape, and forming direction of the beams depend on the rigidity required for the steel shell 10 of the floating pier 1. May be changed as appropriate.
[0028]
【The invention's effect】
As described above, the floating pier panel according to the present invention (Claim 1) is provided with a steel plate / concrete composite beam including a stud and a part of a reinforcing bar that are provided on the outer surface of the steel plate constituting the steel shell in advance. Provided. According to the present invention, the rigidity of the steel shell can be improved by the steel plate / concrete composite beam including the stud and a part of the reinforcing bar, so that the concrete material is hit without welding the steel stiffening rib to the inner surface. The dead load before and after installation can be supported. As a result, it is possible to keep the manufacturing cost low and suppress the increase in the weight of the steel material.
[0029]
In the floating pier according to the present invention (Claim 2), the steel shell for the floating pier is constituted by a steel plate panel preliminarily provided with a steel plate and a concrete composite beam including a part of a reinforcing bar and a stud arranged on the outer surface. . According to the present invention, the rigidity of the steel shell for the floating pier can be improved by the steel plate / concrete composite beam including a part of the reinforcing bar and the stud disposed on the outer surface of the steel plate panel. It is possible to support the dead load before and after the concrete material is cast without welding the stiffening ribs. As a result, it is possible to keep the manufacturing cost low and suppress the increase in the weight of the steel material.
[0030]
Moreover, the manufacturing method of the floating pier according to the present invention (Claim 3) is a steel in which watertightness is secured by a steel plate panel provided with a steel plate / concrete composite beam including a stud and a part of a reinforcing bar provided on the outer surface. After the shell was constructed, a concrete material was placed on the outer surface of the steel shell. According to the present invention, the rigidity of the steel shell can be improved by the steel plate / concrete composite beam including a part of the reinforcing bar and the stud disposed on the outer surface of the steel plate panel. It becomes possible to support the dead load before and after placing the concrete material without welding the rib. As a result, it is possible to keep the manufacturing cost low and suppress the increase in the weight of the steel material.
[Brief description of the drawings]
FIG. 1 is a perspective view conceptually showing a steel shell of a floating jetty according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a perspective view of the floating pier panel shown in FIG. 2;
4 is a conceptual diagram sequentially showing a manufacturing process of the floating pier panel shown in FIG. 2. FIG.
FIG. 5 is a conceptual diagram of an installed floating pier.
FIG. 6 is a cross-sectional view of a conventional floating pier.
FIG. 7 is a view showing details of a conventional floating pier.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floating pier 2 Connecting bridge 3 Quay wall 10 Steel shell 11 Steel frame 11a, 11b, 11c Structural member 12 Panel 13 Concrete layer 22 Stud 23 Reinforcement 24 Beam 25 Formwork

Claims (3)

In the floating pier panel where the steel shell of the floating pier is constructed and concrete material is cast on the outer surface,
A floating pier panel characterized in that a steel plate / concrete composite beam containing a part of a reinforcing bar and a stud disposed on an outer surface of a steel plate constituting the steel shell is provided in advance. In the steel shell for floating piers where a concrete layer is placed on the outer surface ,
A steel shell for a floating pier , comprising a steel plate / concrete composite beam preliminarily provided with a stud and a part of a reinforcing bar arranged on the outer surface.   After forming a steel shell with watertightness secured by a steel plate panel preliminarily provided with a steel plate and concrete composite beam including a stud and a part of the reinforcing bar arranged on the outer surface, a concrete material is applied to the outer surface of the steel shell. A method for manufacturing a floating pier, characterized by comprising:

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