JP2004196271A - Floating body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the need of a large-scale damping device for eliminating height difference. <P>SOLUTION: This floating body structure 10 comprises a floating body structural body 12, a floating part 14, and a hinge pivoting part 16. The body 12 is formed in a hollow and rather flat square box shape to float a part thereof above a water level. The floating part 14 is formed to store a liquid fluid body 20 such as water and oil movably in the floating body structural body 12. The hinge pivoting part 16 is disposed on the longitudinal one end side of the body 12, and installed between the bottom plate lower surface of the body 12 and a fixed structure 22. When a sea level is vertically moved, the body 12 formed in a hollow shape to float the part thereof above the water level is forced to vertically move according to that vertical movement of the body. Since the hinge pivoting part 16 for swingably connecting is formed, the side of the body on which the hinge pivoting part 16 is formed is restricted to vertically move. Accordingly, the level of the body 12 on the fixed structure 22 side in which the hinge pivoting part 16 is formed is kept unchanged and only the level on the opposite side is moved in the vertical direction. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a floating structure, and more particularly to an improved technique for mooring and connecting a floating structure to a fixed structure such as a seawall.
[0002]
[Prior art]
Recently, it has been studied to install a large-scale floating structure on the sea surface and use it as a deep water quay or an airport site. When large-scale floating structures used in such applications are installed in harbors and oceans, they need to be connected to fixed structures such as seawalls and quays to secure traffic such as vehicles.
[0003]
In this case, the level of the floating structure changes due to the ebb and flow of the tide, and the level of the floating structure changes with time due to the ebb and flow of the tide. It may or may not be possible.
[0004]
Therefore, in this type of floating structure, a buffer mechanism such as a long relief expansion joint is interposed between the fixed structure and the structure to eliminate the step. (See Non-Patent Document 1) However, such a conventional connection structure between a floating structure and a fixed structure has the following problems.
[0005]
[Non-patent document 1]
"Floating Ocean Airport" published by Kashima Press in June 1997, pages 156-161.
[0006]
[Problems to be solved by the invention]
That is, the buffer mechanism disclosed in the above-mentioned non-patent document uses a road surface plate fixing device and a cam mechanism, so that the entire device becomes large-scale, and furthermore, a step is reduced only by a portion provided with the buffer mechanism. However, there is a disadvantage that this portion becomes steep.
[0007]
In addition, in the shock absorbing mechanism disclosed in the non-patent literature, a huge stress corresponding to the increase in buoyancy due to the rise of the tide level of the floating structure is supported by the shock absorbing mechanism, and an even larger device is required. Was needed.
[0008]
The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a floating structure that does not require a large-scale device for eliminating a step. .
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention relates to a large-scale floating structure used for airports, harbors, seaside facilities, and the like, wherein the floating structure main body is formed in a hollow shape and partially floats on the water surface; A floating portion that movably accommodates a liquid fluid such as water or oil in the structure main body, and is swingable between one end side of the floating structure main body and a fixed structure such as a seawall or a quay wall; And a hinge support for connection to the vehicle.
[0010]
According to the floating body structure thus configured, when the tide level rises and falls, the floating body main body formed in a hollow shape that partially floats on the water surface tends to move up and down accordingly.
[0011]
At this time, a hinge support portion is provided on one end side of the floating structure main body so as to swingably connect with a fixed structure such as a seawall, so that the side on which the hinge support portion is provided is provided. The vertical movement is restricted, and the other end of the floating structure main body on which the hinge support is not provided moves up and down with the tide level.
[0012]
That is, according to the configuration of the present invention, in the floating structure main body, the level on the fixed structure side where the hinge support is provided does not change, but only the level on the opposite side changes in the vertical direction.
[0013]
Therefore, the connecting portion between the fixed structure and the floating structure main body can be connected without the level fluctuation caused by the tide level fluctuation by interposing the hinge support, and as a result, the fixed structure can be fixed. Even if a large-scale buffer device is not installed between the structure and the structure, the occurrence of a step due to the tide level fluctuation is prevented.
[0014]
Moreover, in the configuration of the present invention, since the difference in ebb and flow is reduced by the entire length of the floating structure main body, the gradient is very gentle and uniform.
[0015]
Further, when the level on the fixed structure side where the hinge support is provided does not change, and only the level on the opposite side changes in the vertical direction, the floating portion movably accommodated in the floating structure main body. Since the liquid fluid such as water or oil moves freely with the inclination, and the floating structure main body is inclined and stopped while maintaining the stability, the reaction force acting on the hinge support part is also very small. .
[0016]
The hinge support may comprise a hinge support made of steel.
The hinge bearing may be formed of a rubber bearing plate.
[0017]
The floating structure main body is provided with dolphins for restricting the horizontal movement of the floating structure main body on both ends in the width direction of the floating structural body on the other end side opposite to the portion where the hinge support portion is provided. Can be installed.
[0018]
On one end side of the floating structure main body provided with the hinge support portion, a buffer joint for restricting horizontal movement of the floating structure main body may be provided between the fixed structure and the dolphin in place of the dolphin. it can.
[0019]
The hinge support may be interposed between a lower end of the floating structure main body and the fixed structure.
[0020]
The floating structure main body has a plurality of partition walls extending in the longitudinal direction therein, and the floating portion can be arranged between the partition walls.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 show a first embodiment of a floating structure according to the present invention. The floating structure 10 shown in FIG. 1 includes a floating structure main body 12, a floating portion 14, a hinge support 16, and a dolphin 17.
[0022]
The floating structure main body 12 is made of concrete, steel plate, or the like, and includes an upper plate 12a, a bottom plate 12b, and a side plate 12c. The side plate 12c is erected on four sides of a bottom plate 12b formed of a rectangular flat plate, and the upper plate 12a having the same shape as the bottom plate 12b is fixed so as to close the upper end side of the side plate 12c. The structure body 12 has a hollow inside so that a part thereof floats on the water surface, and is formed in a relatively flat rectangular box shape.
[0023]
As shown in the plan view of FIG. 2, a plurality of flat partitions 18 extending in the longitudinal direction are provided in the floating structure main body 12, and each partition 18 is provided with a side plate 12 c of the floating structure main body 12. Are arranged in parallel with each other at a predetermined interval. The height of the partition wall 18 is set to about １ ／ of the height of the side wall 12 c of the floating structure main body 12.
[0024]
The floating portion 14 accommodates a liquid fluid 20 such as water or oil in the floating structure main body 12 so as to be movable. In the case of the present embodiment, every other portion partitioned by the partition wall 18 is provided. The liquid fluids 20 are accommodated in the floating structure main body 12 so as to be movable along the longitudinal direction of the floating structure main body 12.
[0025]
In this case, the storage height of the liquid fluid 20 is set to be lower than the height of the partition 18 so that the floating structure main body 12 does not get over the partition 18 when the floating structure main body 12 moves up and down with the tide level. .
[0026]
In the case of the present embodiment, the height of the floating portion 14 in which the liquid fluid 20 is accommodated is, as shown by hatching in FIG. 1, the floating structure main body 12 corresponding to the sea surface (MWL) in a steady state. Is set at a position slightly lower than the height of the waterline.
[0027]
The configuration of the floating portion 14 is not limited to the state shown in FIG. 2, and the liquid fluid 20 may be accommodated in the entire portion partitioned by the partition 18, or the partition 18 may be provided. Alternatively, the liquid fluid 20 may be accommodated in the floating structure main body 12 so as to have a predetermined height.
[0028]
In this case, since the partition wall 18 has a function of preventing the liquid fluid 20 from flowing in the short direction of the floating structure main body 12 and preventing the main body 20 from tilting in the short direction, the partition 18 is provided. In this case, it is desirable that the interval in the short direction is not too long.
[0029]
The hinge support portion 16 is a steel hinge support portion in which an upper fixing portion 16a and a lower fixing portion 16b are connected by a pin 16c. In the case of the present embodiment, the hinge support portion 16 is a floating structure main body. 12, the upper fixing portion 16 a is fixed to the lower surface of the bottom plate 12 b of the floating structure main body 12, and the lower fixing portion 16 b is fixed to a fixing structure 22 such as a revetment or a quay. Have been.
[0030]
A plurality of hinge bearing portions 16 having such a configuration are arranged at predetermined intervals along the short direction thereof, depending on the size of the floating structure main body 12.
[0031]
In the present embodiment, a step 22a is provided on the fixed structure 22 side, and the lower solid portion 16b of the hinge support 16 is fixed to the bottom of the step 22a. The support portion 16 may be interposed between the side surface of the step portion 22a and the side plate 12c of the floating structure main body 12.
[0032]
The floating structure main body 12 connected to the fixed structure 22 by the hinge support 16 having such a configuration has the hinge support 16 as a fulcrum, and the opposite end thereof can swing vertically. ing.
[0033]
The dolphin 17 regulates the horizontal movement of the floating structure main body 12 installed so that a part thereof floats on the sea surface. The upper end side is adjacent to the floating structure main body 12, and the lower end side is a water bottom. It is erected to be buried.
[0034]
In the case of the present embodiment, the dolphins 17 are located on the other end side in the longitudinal direction facing the hinge support portion 16 provided with the floating structure main body 12, and are arranged on both sides in the width direction of the floating structure main body 12. Thus, the horizontal movement of the floating structure main body 12 in the lateral direction is restricted.
[0035]
A member indicated by reference numeral 24 in FIGS. 1 and 2 is a joint joint plate that closes a gap provided between the floating structure main body 12 and the fixed structure 22 and connects the two.
[0036]
According to the floating body structure 10 configured as described above, when the tide level rises and falls, the hollow body main body 12 formed in a hollow shape that partially floats on the water surface tends to move up and down accordingly.
[0037]
At this time, since the other end side of the floating structure main body 12 is provided with a hinge support portion 16 that swingably connects to a fixed structure 22 such as a seawall, the hinge support portion 16 is provided. The other end provided is restricted from moving up and down.
[0038]
On the other hand, since the dolphin 17 for restricting the horizontal movement of the floating structure main body 12 is provided at one end of the floating structure main body 12, the floating structural body 12 is in a state where the horizontal movement is restricted. And move up and down with the tide.
[0039]
That is, according to the configuration of the present embodiment, the floating structure main body 12 does not change the level on the fixed structure 22 side where the hinge support portion 16 is provided, but changes only the level on the opposite side in the vertical direction. .
[0040]
Therefore, the connection connection between the fixed structure 22 and the floating structure main body 12 can be connected without the occurrence of level fluctuation due to tide level fluctuation by interposing the hinge support portion 16.
[0041]
As a result, even if a large-scale shock absorber is not installed between the fixed structure 22 and the fixed structure 22, the occurrence of a step due to the tide level fluctuation is prevented. Further, in the configuration of the present embodiment, since the difference in ebb and flow is reduced by the entire length of the floating structure main body 12 in the longitudinal direction, the gradient is very gentle and uniform.
[0042]
Furthermore, when the level on the fixed structure 22 side where the hinge support portion 16 is provided does not change and the level on the opposite side changes in the vertical direction, the floating housing movably accommodated in the floating structure main body 12. The liquid fluid 20 such as water or oil in the portion 14 moves freely with the inclination, and the floating structure main body 12 is inclined and stopped while maintaining stability. The reaction force is also very small. As a result, the hinge support 16 does not need to be strong and large.
[0043]
Further, in the case of the present embodiment, since one end side of the floating structure main body 12 is connected to the fixed structure 22 by the hinge support portion 16, the structure is simplified and the cost is reduced.
[0044]
FIGS. 3 to 5 show a second embodiment of the floating structure according to the present invention. The same reference numerals are given to the same or corresponding parts as in the above embodiment, and the description thereof will be omitted. Only the characteristic points will be described below.
[0045]
The floating structure 100 shown in the figure includes a floating structure main body 120, a floating portion 140, and a hinge support 160, as in the above embodiment.
[0046]
The floating structure main body 120 includes an upper plate 120a, a bottom plate 120b, and a side plate 120c, similarly to the above-described embodiment, and has a hollow inside and a relatively flat square box so that a part thereof floats on the water surface. It is formed in a shape.
[0047]
As shown in the plan view of FIG. 4, a plurality of flat partitions 180 extending in the longitudinal direction are provided in the floating structure main body 120. The floating portion 140 movably accommodates the liquid fluid 20 such as water or oil in the floating structure main body 120 similarly to the above-described embodiment, and is provided every other portion partitioned by the partition wall 180. The liquid fluids 20 are respectively accommodated, and the liquid fluids 20 are configured to be movable along the longitudinal direction of the floating structure main body 120.
[0048]
In the case of the present embodiment, the hinge support portion 160 is constituted by a rubber support plate. The rubber support plate is composed of a steel core 161 provided at the center and rubber provided on both sides of the steel core 161. And a plate 162.
[0049]
Such a hinge support 160 is interposed between the floating structure main body 120 and the fixed structure 22 in place of the steel hinge of the above embodiment. In the case of the present embodiment, a plurality of hinge supports 160 having the same configuration are arranged at predetermined intervals along the short direction of the floating structure main body 120.
[0050]
The floating structure main body 120 connected to the fixed structure 22 by the hinge supporting portion 160 having such a configuration has the hinge supporting portion 160 as a fulcrum, and the opposite end thereof can swing vertically. ing.
[0051]
That is, in the case of the present embodiment, since the hinge support portion 160 is formed of a rubber support plate, when the floating structure main body 120 moves upward, one of the rubber portions 162 is elastically deformed. This is made possible, and when the floating structure main body 120 moves downward, this is made possible by the elastic deformation of the other rubber portion 162.
[0052]
In the case of the present embodiment, a buffer joint 30 is provided instead of the dolphin 17 of the above embodiment. The buffer joint 30 is disposed at a side end of the floating structure main body 120 on the side where the hinge support 160 is provided, and restricts horizontal movement of the floating structure main body 120.
[0053]
FIG. 5 shows the installation state of the buffer joint 30 in detail. The buffer joint 30 shown in the figure includes a pair of hollow trapezoidal rubbers 30a and locking wires 30b.
[0054]
The pair of trapezoidal rubbers 30a are arranged on both sides of the side plate 120c of the floating structure main body 120, and penetrate the locking wire 30b having one end fixed to the one trapezoidal rubber 30a by passing through the rubber 30a and the side plate 120c. The other end is embedded and fixed to the side of the fixed structure 22.
[0055]
As shown in FIG. 4, a plurality of buffer joints 30 having the same configuration are arranged at predetermined intervals along the short direction of the floating structure main body 120, as shown in FIG. 4.
[0056]
Now, according to the floating structure 10a configured as described above, the floating structure main body 120 does not change the level on the fixed structure 22 side where the hinge support portion 160 is provided, but only the level on the opposite side. Since it changes in the up-down direction, the connection can be made without the occurrence of level fluctuation due to the tide level fluctuation as in the above embodiment, and the same operation and effect can be obtained.
[0057]
In addition, in the case of this embodiment, since the hinge support portion 160 is formed of a rubber support plate, earthquake resistance is ensured in the event of an earthquake, and the dolphin 17 provided in the undersea portion is not required. Therefore, the cost can be reduced.
[0058]
In addition, the dolphin 17 shown in the above embodiment can be adopted in place of the buffer joint 30 in the floating structure 10a of the second embodiment, and the buffer joint 30 shown in the second embodiment is The dolphin 17 of the first embodiment may be used instead.
[0059]
【The invention's effect】
As described above in detail, according to the floating structure of the present invention, a simple and low-cost structure that does not require a large-scale device for eliminating steps can be obtained.
[Brief description of the drawings]
FIG. 1 is a side view of an overall configuration showing a first embodiment of a floating structure according to the present invention.
FIG. 2 is a plan view of a main part of FIG.
FIG. 3 is a side view of the entire configuration showing a second embodiment of the floating structure according to the present invention.
FIG. 4 is a plan view of a main part of FIG. 3;
FIG. 5 is an enlarged view of a main part of FIG. 3;
[Explanation of symbols]
10, 100 Floating structure 12, 120 Floating structure main body 14, 140 Floating portion 16, 160 Hinge support portion 17 Dolphin 18 Partition wall 20 Liquid fluid 22 Fixed structure 30 Buffer joint

Claims (7)

In large-scale floating structures used for airports, ports, coastal facilities, etc.
A floating structure main body formed in a hollow shape with a part floating on the water surface,
A floating portion that movably accommodates a liquid fluid such as water or oil in the floating structure main body;
A floating structure, wherein a hinge support portion is provided at one end of the floating structure main body so as to swingably connect with a fixed structure such as a seawall or a quay. The floating structure according to claim 1, wherein the hinge support is made of a steel hinge. The floating structure according to claim 1, wherein the hinge support portion is formed of a rubber support plate. The floating structure body has, on the other end side opposite to the portion where the hinge support portion is provided, dolphins that regulate horizontal movement of the floating structure body, on both sides in the width direction of the floating structure. The floating structure according to any one of claims 1 to 3, wherein the floating structure is installed. At one end of the floating structure main body provided with the hinge support portion, a buffer joint for restricting horizontal movement of the floating structure main body is provided between the fixed structure and the dolphin instead of the dolphin. The floating structure according to any one of claims 1 to 3, characterized in that: The floating structure according to any one of claims 1 to 5, wherein the hinge supporting portion is interposed between a lower end of the floating structure main body and the fixed structure. 7. The floating structure body according to claim 1, wherein the main body has a plurality of partition walls extending in a longitudinal direction therein, and the floating portion is arranged between the partition walls. Floating structure.

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