Diving board and construction method thereof

Abstract

To provide a diving board and a construction method of the diving board capable of sufficiently suppressing vibration and sound of a diving plate even when a frame is formed by steel columns and steel frame beams.SOLUTION: Provided are a diving board 1 and a construction method of the diving board 1. The diving board 1 is provided in a pool side 3 and has a diving plate 4 installed therein. The diving board 1 includes: a frame 10 formed by steel columns 11 and steel frame beams 12, 13; a floor plate 20 installed on the steel frame beams 12, 13; a stand 30 fixed onto the floor plate 20 and supporting the diving plate 4; and a pole 40 provided in the frame 10 and arranged below the stand 30.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a diving board installed at the side of a pool and a method for constructing the same. [Background technology]

[0002] Diving boards used in 3m springboard diving, a type of swimming competition, are generally constructed by placing a springboard supported by a stand, such as that described in Patent Document 1, on a concrete platform set up on the side of the pool. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2020-536710 Summary of the Invention [Problem to be solved by the invention]

[0004] When setting up a temporary diving board in a pool that does not currently have one, the diving board can be constructed by placing a floor board on a base constructed of steel columns and steel beams, and then fixing a stand that supports the diving board onto the floor board.

[0005] However, because the frame constructed from steel columns and beams is less rigid than a concrete frame, there was a problem in that the frame was unable to adequately suppress the vibrations and noise generated by the springboard during springboard diving competitions.

[0006] The present invention was made in consideration of these problems, and its purpose is to provide a diving board and its construction method that can sufficiently suppress the vibration and noise of the diving board even when the frame is constructed of steel columns and steel beams. [Means for solving the problem]

[0007] The diving board of the present invention is a diving board installed on the side of a pool and having a springboard installed thereon, characterized in that it has a base constructed of steel columns and steel beams, a floor plate installed on the steel beams, a stand fixed on the floor plate and supporting the springboard, and a support pillar attached to the base and positioned below the stand.

[0008] In the diving board of the present invention having the above configuration, it is preferable that a base plate made of a steel plate is disposed between the platform and the floor plate.

[0009] The diving board construction method of the present invention is a method for constructing a diving board as described above, characterized in that it comprises a platform construction process for constructing the platform on the poolside floor using the steel columns and steel beams, a support pillar fixing process for fixing the upper ends of the pillars to the steel beams, a jacking up process for lifting the steel beams with a jack, a support pillar placement process for placing a support pillar between the lower ends of the pillars and the floor after the jacking up process, and a jack removal process for removing the jack and introducing a compressive force into the pillars after the support pillar placement process. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a diving board and a construction method thereof that can sufficiently suppress the vibration and noise of the diving board even when the frame is constructed of steel columns and steel beams. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a cross-sectional view showing an outline of a diving board according to one embodiment of the present invention. [Figure 2] FIG. 2 is a front view of the diving board shown in FIG. [Figure 3] FIG. 2 is a plan view of the diving board shown in FIG. [Figure 4] 2 is an enlarged cross-sectional view showing a portion of the diving board shown in FIG. 1 where a stand is provided. [Figure 5] FIG. 2 is a plan view of the steel plate shown in FIG. [Figure 6]FIG. 10 is a diagram showing the state after the gantry construction process is completed. [Figure 7] FIG. 10 is a diagram showing the state after the support post fixing process is completed. [Figure 8] FIG. 10 is a diagram showing a state in which the jacking-up process is completed. [Figure 9] FIG. 10 is a diagram showing a state in which the support stand placement step is completed. [Figure 10] FIG. 10 is a diagram showing the state after the jack removal process is completed. DETAILED DESCRIPTION OF THE INVENTION

[0012] A diving board and a method for constructing the same according to one embodiment of the present invention will be described in detail below with reference to the drawings.

[0013] 1, 2 and 3, a diving board 1 according to one embodiment of the present invention is installed beside a swimming pool 2, i.e., on the poolside 3, and is used for 3m springboard diving, a type of swimming competition. A springboard 4 is installed on the diving board 1 so that it is 3m high above the water surface of the pool 2, and competitors can use the springboard 4 to compete in 3m springboard diving.

[0014] The diving board 1 may be configured so that the height of the springboard 4 from the water surface of the pool 2 is set to 1 m, and the diving board 1 may be configured so as to be used for 1 m springboard diving, which is a type of swimming competition.

[0015] The pool 2 and the poolside 3 are each made of concrete, and the diving board 1 is provided on a floor 3 a of the poolside 3 .

[0016] A plurality of diving boards 1 are lined up on the poolside 3, but this embodiment will describe only one of the diving boards 1. However, the poolside 3 may be configured to have only one diving board 1.

[0017] The diving board 1 has a platform 10, a floor board 20, a stand 30, and a support 40.

[0018] The frame 10 is constructed of steel columns 11 and steel beams 12, 13. More specifically, the frame 10 has four steel columns 11 arranged inside the four corners of the frame 10, four steel beams 12 placed on the upper ends of adjacent steel columns 11 and fixed thereto, and seven steel beams 13 fixed to two adjacent steel beams 12 so as to be parallel to the edge of the pool 2. Note that when the steel columns 11 and steel beams 12, 13 are constructed by combining multiple steel frames (two frames), such as the steel beam 12 arranged below the stand 30 in FIG. 1, the steel columns 11 and steel beams 12, 13 made up of multiple steel frames are counted as one. The lower ends of the steel columns 11 are fixed to supports 14 provided on the floor 3a of the poolside 3 using fastening members such as bolts and nuts. In other words, the frame 10 is constructed on the floor 3a of the poolside 3.

[0019] In this embodiment, the steel column 11 and the steel beams 12, 13 are each formed of a channel steel. Note that the steel column 11 and the steel beams 12, 13 may also be formed of steel frames of other shapes, such as square steel pipes.

[0020] The frame 10 may be configured such that brace materials 15 are provided between adjacent steel columns 11. Furthermore, the number of steel columns 11, the number of steel beams 12 and 13 constituting the frame 10, and the arrangement of the steel columns 11, steel beams 12 and 13, and brace materials 15 are not limited to those described above and may be changed as appropriate. Furthermore, the front portion of the frame 10 facing the pool 2 may be covered with a wall 16.

[0021] The floorboards 20 are placed on the steel beams 12, 13 and form the foothold (platform) for the diving board 1. As shown in Fig. 4, in this embodiment, the floorboards 20 are made of wood, with anti-slip vinyl pool flooring sheets 22 attached to plywood (laminated wood board material) 21. However, the floorboards 20 may have other configurations as long as they can be placed on the steel beams 12, 13 and form the foothold for the diving board 1.

[0022] In this embodiment, the diving board 1 has a structure in which a base plate 50 made of a steel plate is disposed between a stand 10 and a floor board 20.

[0023] More specifically, as shown in FIGS. 4 and 5 , three base plates 50, each made of a steel plate, are arranged side by side on the steel beams 12, 13 of the frame 10. As shown in FIG. 3 , the three base plates 50 are arranged so as to cover all of the upper ends of the four steel columns 11. Each base plate 50 is a rectangular plate provided with a plurality of fixing holes for fixing to the steel beams 12, 13 or a plurality of fixing holes for fixing the stand 30, and is fixed to the steel beams 12, 13 using these fixing holes and fastening members such as bolts and nuts (not shown). Note that the shape, size, etc. of the base plate 50 can be variously changed, for example, formed from a single steel plate, as long as it is large enough to cover all of the upper ends of the four steel columns 11.

[0024] By placing a base plate 50 made of steel plate between the stand 10 and the floorboard 20, the rigidity of the stand 10 can be increased and the weight of the scaffolding portion provided on the stand 10 can be increased, thereby suppressing the shaking of the stand 10 due to vibrations generated by the springboard 4.

[0025] A plurality of spacer bodies 51 are arranged on the base plate 50 at intervals from each other in parallel with the steel beams 13, and the floorboards 20 are placed on these spacer bodies 51. The plurality of spacer bodies 51 may be formed from, for example, square timber (wooden pieces in the shape of a rectangular pillar), but are not limited to this.

[0026] The stand 30 supports the springboard 4. In this embodiment, the stand 30 is divided into a rear end support part 31 that supports the rear end of the springboard 4, and an intermediate support part 32 that supports the middle part of the springboard 4. The intermediate support part 32 may be equipped with a dial 32a for adjusting the position at which the springboard 4 is supported.

[0027] The rear end support part 31 and the intermediate support part 32 are each fixed onto the floor panel 20. More specifically, as shown in FIG. 4 , a pair of front and rear base bodies 33 fixed to the steel beam 13 via the base plate 50 are disposed between the floor panel 20 and the base plate 50 in the portion where the rear end support part 31 is disposed and in the portion where the intermediate support part 32 is disposed, and the rear end support part 31 and the intermediate support part 32 are each fixed onto the floor panel 20 by being fixed to the corresponding base body 33 using anchor bolts 34 while disposed on the floor panel 20. In other words, the rear end support part 31 and the intermediate support part 32 are connected and fixed to the steel beam 13 via the corresponding base body 33 and base plate 50, respectively.

[0028] The diving board 1 can also be configured so that sandbags 60 are placed between the base plate 50 and the floor board 20. In this embodiment, of the spaces between the base plate 50 and the floor board 20 separated by the spacers 51, a sandbag 60 is placed in each space except for the space in which the base body 33 is placed. The sandbags 60 are bags filled with sand, and multiple sandbags 60 are spread tightly on the base plate 50 in each space.

[0029] By placing sandbags 60 between the base plate 50 and the floorboard 20, the weight of the foothold portion provided on the platform 10 is increased, which makes it possible to prevent the platform 10 from shaking due to vibrations generated by the springboard 4, and also absorbs the sound generated by the springboard 4 to suppress the sound.

[0030] The pillars 40 are provided on the gantry 10 and form part of the gantry 10. In this embodiment, the gantry 10 is provided with three pillars 40 corresponding to the rear end support portions 31 and three pillars 40 corresponding to the intermediate support portions 32.

[0031] In this embodiment, the support columns 40 are formed from channel steel. However, the support columns 40 may also be formed from steel frames of other shapes, such as square steel pipes.

[0032] The support columns 40 are arranged below the stand 30. That is, the three support columns 40 corresponding to the rear end support section 31 are arranged below the rear end support section 31, and the three support columns 40 corresponding to the intermediate support section 32 are arranged below the intermediate support section 32.

[0033] More specifically, the three support columns 40 arranged below the rear end support section 31 of the stand 30 are each arranged below a portion of the rear end support section 31 that is fixed to the base body 33 or the floor board 20 by anchor bolts 34. The upper end of each support column 40 is fixed to the steel beam 13, and the lower end is fixed to a support base 41 provided on the floor 3a of the poolside 3 using fastening members such as bolts and nuts. The support base 41 may be formed, for example, by mortar (grout) filled between the floor 3a of the poolside 3 and the lower ends of the support columns 40.

[0034] Similarly, the three pillars 40 arranged below the intermediate support section 32 of the stand 30 are each arranged below the portion of the intermediate support section 32 that is fixed to the base body 33 or the floor panel 20 by anchor bolts 34. The upper end of each pillar 40 is fixed to the steel beam 13, and the lower end is fixed to a support base 41 provided on the floor 3a of the poolside 3 using fastening members such as bolts and nuts. The support base 41 may be formed, for example, by mortar (grout) filled between the floor 3a of the poolside 3 and the lower ends of the pillars 40.

[0035] The support pillars 40 only need to be arranged so that at least a portion thereof is located below the stand 30, i.e., the rear end support portion 31 or the intermediate support portion 32, in a plan view. Furthermore, as long as at least one support pillar 40 is arranged below the stand 30, the number and arrangement of the support pillars 40 arranged below the stand 30, i.e., the rear end support portion 31 or the intermediate support portion 32, can be changed as appropriate.

[0036] In this way, in the diving board 1 of this embodiment, the base 10 is constructed of steel columns 11 and steel beams 12, 13, and a stand 30 supporting the springboard 4 is fixed on a floor board 20 installed on the base 10. The base 10 is provided with a support pillar 40 positioned below the stand 30, so that the vertical load applied to the base 10 from the springboard 4 via the stand 30 during competition is directly supported by the support pillar 40, and the vibrations and noise generated by the springboard 4 can be sufficiently suppressed by the base 10.

[0037] In particular, in this embodiment, the support pillars 40 are arranged below the portion of the stand 30 that is fixed to the floorboard 20 or the steel beams 13 by the anchor bolts 34, so that the vertical load applied from the diving board 4 to the base 10 via the stand 30 during a competition is more efficiently supported by the support pillars 40, and the vibrations and noise generated by the diving board 4 can be more effectively suppressed by the base 10.

[0038] The diving board 1 according to this embodiment is configured so that a compressive force is introduced into each of the support columns 40. That is, each steel column 11 is fixed to the steel beams 12 and the floor 3a with a tensile preload applied to it. With this configuration, the vertical load applied to the platform 10 from the diving board 4 via the stand 30 during competition is more concentrated and supported by the support columns 40, allowing the platform 10 to more effectively suppress the vibrations and noise generated by the diving board 4.

[0039] When the steel columns 11 are fixed to the steel beams 12 and the floor 3a with a tensile preload applied to them in order to apply a compressive force to each of the supports 40, it is preferable to fix the lower ends of the steel columns 11 to the floor 3a using anchor bolts that penetrate the floor 3a of the poolside 3. This makes it possible to more reliably fix the lower ends of the steel columns 11 with a tensile preload applied to the floor 3a.

[0040] Next, a method for constructing the diving board according to this embodiment having the above configuration will be described with reference to Figures 6 to 10. Note that the following describes only the procedure for constructing a portion of the platform 10, centered on the support pillar 40 located below the rear end support portion 31 of the stand 30, but other portions of the platform 10 can be constructed in the same manner.

[0041] First, as shown in Fig. 6, in the frame construction process, a frame 10 is constructed on a floor 3a of the poolside 3 using steel columns 11 and steel beams 12 and 13. At this time, the lower ends of the steel columns 11 are fixed to the floor 3a by respective supports 14. In the frame construction process, brace materials 15 may be provided on the frame 10. Note that in the frame construction process, the support columns 40 have not yet been provided on the frame 10.

[0042] 7, in the support pillar fixing step, the upper ends of the support pillars 40 are fixed to the steel beams 13 of the frame 10. In this embodiment, the upper ends of the two support pillars 40 are fixed to the corresponding steel beams 13. At this time, no support base 41 is provided on the floor 3a of the poolside 3, and a gap is left between the lower ends of the two support pillars 40 and the floor 3a.

[0043] Next, as shown in FIG. 8 , in the jacking-up process, the steel beam 12 is lifted by a jack 70. When the steel beam 12 is lifted by the jack 70 in the jacking-up process, tension is applied to the steel column 11. For example, a hydraulic jack can be used as the jack 70. The jack 70 is placed between the floor 3a of the poolside 3 and the steel beam 12, and applies tension, i.e., a preload in the tensile direction, to the steel column 11 by lifting the steel beam 12 upward relative to the floor 3a. The jack 70 is preferably placed near the support column 40.

[0044] Next, as shown in Fig. 9, in the support base placement step, a support base 41 is placed between the lower ends of the support columns 40 and the floor 3a. In this embodiment, one common support base 41 is placed between the lower ends of each of the two support columns 40 and the floor 3a. At this time, the steel beams 12 remain in a state of being lifted by the jacks 70. In the support base placement step, the support base 41 may be formed, for example, by filling mortar (grout) between the floor 3a of the poolside 3 and the lower ends of the support columns 40 and allowing this mortar to harden.

[0045] 10, in the jack removal process, the jack 70 is removed from between the floor 3a of the poolside 3 and the steel beam 12, and a compressive force is introduced to the support column 40. In other words, when the jack 70 is removed, the steel column 11 is fixed to the steel beam 12 and the floor 3a with a tensile preload applied to it, and thereby a compressive force is introduced to the support column 40.

[0046] Thereafter, the base plate 50, spacer body 51, sandbags 60, floor board 20, stand 30, diving board 4, etc. are installed or fixed on the platform 10 constructed by the above process, thereby completing the diving board 1 having the configuration shown in Figures 1 to 3.

[0047] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0048] For example, in the above embodiment, the steel column 11 is configured to be fixed to the steel beam 12 and the floor 3a with a tensile preload applied, but the steel column 11 may also be configured so that no tensile preload is applied. [Explanation of symbols]

[0049] 1 Diving Board 2. Pool 3 Poolside 3a floor 4. Springboard 10 Mounting stand 11 Steel column 12 Steel beams 13 Steel beams 14 Support stand 15 Brace material 16 Wall 20 Floorboards 21 Plywood 22 Non-slip vinyl floor sheet for pools 30 Stand 31 Rear end support part 32 Intermediate support part 32a Dial 33 Base body 34 Anchor bolt 40 pillars 41 Support stand 50 boards 51 Spacer body 60 Sandbag 70 Jack

Claims

1. A diving board installed on the poolside, a frame constructed of steel columns and steel beams; A floor plate installed on the steel beam; a stand fixed on the floor board and supporting the springboard; A diving board comprising: a support pillar attached to the platform and positioned below the stand.

2. The diving board according to claim 1 , wherein a base plate made of a steel plate is disposed between the platform and the floor plate.

3. 3. A method for constructing a diving board according to claim 1 or 2, a frame construction step of constructing the frame using the steel columns and the steel beams on the poolside floor; a pillar fixing step of fixing the upper end of the pillar to the steel beam; a jacking-up process of lifting the steel beam with a jack; a support base placement step of placing a support base between the lower end of the support column and the floor after the jacking up step; A diving board construction method characterized by comprising, after the support platform placement step, a jack removal step of removing the jack and introducing a compressive force into the support pole.

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