JP3828776B2 - Highly rigid panel and vibration reduction method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high rigidity panel used for a building member, particularly a floor structure.
[0002]
[Prior art]
Conventionally, lightweight, high-rigidity sandwich panels such as metal truss cross-section panels and honeycomb panels have been used as floor structure constituent materials for the purpose of improving the comfortability and workability such as floor deflection, sound insulation, and earthquake resistance. is there. The sandwich panel is characterized by high rigidity as a whole panel, and a particularly large reduction effect can be obtained in a low frequency region of heavy floor impact sound, which is the most difficult to take countermeasures in sound insulation performance.
[0003]
However, a high-rigidity panel such as a truss cross-sectional panel is highly rigid as a whole, so it is effective against vibrations in the low-frequency region as described above. Since the thin plate itself has low rigidity, local vibrations in the medium to high frequency region may occur in the constituent thin plate when an impact force such as falling of an object or human walking is applied on the floor. And the local vibration in a constituent thin plate propagates to floor finishing materials, such as flooring, and gives discomfort to the pedestrian on a floor, and may become a problem called chatter vibration. In addition, the sound in the middle to high frequency range radiated from the local vibration to the back of the ceiling may pass through the ceiling on the lower floor, resulting in a problem called chatter noise. FIG. 5 is an example of the result of numerical analysis of the local vibration mode of the folded plate 3 in a highly rigid sandwich panel using the folded plate 3 as a core, that is, a truss cross-sectional panel, and a local vibration of 150 Hz occurs. Shows the case. It can be seen that there is an amplitude belly 10 on the slope 3a of the folded plate.
[0004]
The local vibration in the constituent thin plate of the metal panel as described above can be eliminated by placing concrete on the entire upper surface of the constituent thin plate to form a composite floor. In the case of using a high-rigidity panel composed of a metal thin plate as described above as a flooring material for a building, it is common to use a synthetic floor, and local vibrations in the structural thin plate are constrained by concrete. There is no problem of chatter vibration and chatter noise caused by local vibration. In addition, when concrete flooring is not applied to the entire upper surface of the structural thin plate, the structural thin plate is increased in thickness, a high-rigidity panel is filled with soundproofing materials such as glass wool, and the structural thin plate is damped. Measures such as pasting may be taken.
[0005]
In general, when a thin plate is used as a structural member, it is necessary to sufficiently verify the buckling failure, and as a countermeasure against buckling, it is common to increase the thickness of the constituent thin plate.
[0006]
[Problems to be solved by the invention]
However, in the conventional method of placing concrete on the entire top surface of the structural thin plate, the total weight of the entire floor structure is remarkably increased, so that the earthquake resistance is lowered. In addition, as the total weight of the floor structure increases, it becomes necessary to increase the structural strength of members such as large beams, columns, and walls that support the floor structure, which makes structural design difficult and reduces workability.
[0007]
In addition, in the local vibration countermeasure method, such as placing concrete on the entire upper surface of the structural thin plate or filling the panel with soundproofing material, when using a high-rigidity panel as a floor panel, for piping and wiring etc. Since space is required, there is a problem that space for piping and wiring is reduced.
[0008]
And, as a countermeasure for local vibration and buckling of the structural thin plate, concrete placement on the entire upper surface of the structural thin plate, increase in the thickness of the structural thin plate, application of soundproofing materials and vibration damping materials, all have significant material and construction costs To increase.
[0009]
The present invention has been made in view of the above problems, and while suppressing a significant increase in its own weight, vibration and noise, particularly chatter vibration and chatter noise due to local vibrations of a thin plate, are reduced, and has sufficient buckling strength. An object is to provide an economical high-rigidity panel and a vibration reduction method thereof.
[Means for Solving the Problems]
[0010]
[Means for Solving the Problems]
  The high-rigidity panel according to claim 1 of the present invention includes two plate members arranged in parallel and a core member arranged between the two plate members and connected to each of the plate members.High rigidity panel,A space formed between the plate material and the core materialPartitionArranged at a predetermined position in the longitudinal direction and fixed to the plate and / or the core.The partition is provided near the antinode of the vibration mode in the longitudinal direction of the plate member and / or the core member.It is characterized by that.
[0011]
  According to a ninth aspect of the present invention, there is provided a vibration reducing method for a high-rigidity panel in which two plate members are arranged in parallel and a core member is arranged between the two plate members to be connected to each of the plate members.,in frontA space formed between the recording board and the coreOne or more partitions for partitioning the plate material and / or the vicinity of the vibration mode in the longitudinal direction of the core materialIt arrange | positions to the said board | plate material and / or the said core material, It is characterized by the above-mentioned.
[0012]
  According to the high-rigidity panel and the vibration reduction method described above, the longitudinal direction of the core material fills the space formed between the plate material and the core material without placing concrete on the entire upper surface of the core material. It is possible to reduce vibration and noise, particularly chatter vibration and chatter noise due to local vibration of the constituent thin plates, and suppress a significant increase in the weight of the entire floor structure. Further, since this partition reduces local vibration and prevents buckling failure, it is not necessary to increase the thickness of the constituent thin plate. Therefore, there is no problem of impairing earthquake resistance and workability. In addition, by installing the partitions at a plurality of locations in the longitudinal direction of the core material, the core material and the plate material can be more reliably restrained, and the effect of reducing local vibration can be further improved. Further, since concrete is not placed over the entire top surface of the core material, a sufficient space for piping and wiring in the high-rigidity panel can be secured. Further, it is not necessary to place concrete on the entire upper surface of the core material, to apply a soundproofing material or a vibration damping material, and to increase the thickness of the constituent thin plate, thereby reducing costs.In addition, since a partition is provided near the antinode of the vibration mode (see FIG. 5) and a portion having a large amplitude is constrained, local vibration can be more effectively reduced. Here, since different vibration modes are generated depending on the frequency, it is more preferable to provide a partition in the vicinity of the antinodes of the vibration modes in all frequency regions in question.
[0013]
  Claims of the invention3The high-rigidity panel according to claim 1.Or 2The cross-section in the width direction of the core material has a undulating shape.
[0014]
The vibration reducing method for a high-rigidity panel according to claim 10 of the present invention is characterized in that, in claim 9, the cross-section in the width direction of the core member has a undulation shape.
[0015]
According to the above-described high-rigidity panel and its vibration reduction method, a plate material having a wavy cross-sectional shape such as a corrugated or folded plate shape is used as the core material, and the rigidity of the entire panel is effectively improved. Is possible.
[0016]
  Claims of the invention4The high-rigidity panel described inA high-rigidity panel comprising one plate and a core having a undulation in a cross section in the width direction and connected to the plate.,The core member is fixed to a side not facing the plate member, and has one or more partitions provided in the vicinity of the antinode of the vibration mode in the longitudinal direction of the plate member and / or the core member.It is characterized by that.
[0017]
  According to the eleventh aspect of the present invention, in the vibration reducing method for a high-rigidity panel, a core material having a undulation in the cross section in the width direction is connected to the plate material, and one or more partitions are not opposed to the plate material of the core material. ~ sideAnd near the belly of the vibration mode in the longitudinal directionIt is characterized by being fixed to.
[0018]
  If the plate material is not connected to both sides of the core material, it is easy to bend at the joint between the plate material and the core material, and the bending rigidity in the width direction is remarkably reduced.However, according to the above-described high-rigidity panel and its vibration reduction method, By fixing the partition at a predetermined position in the longitudinal direction so as to fill the space formed therebetween, it is possible to suppress a decrease in the bending rigidity in the width direction. That is, it is possible to realize a high-rigidity panel at a low cost by using only one plate material. Also billedItem 1The same effect can be obtained.
[0019]
  Claims of the invention5The high-rigidity panel described inOneBoard material,The cross section in the width direction is a shape having undulations, and is a high-rigidity panel comprising a core material connected to the plate material,,The plate member and / or the core member relating to the entire high-rigidity panel having one or more partitions fixed on a side of the core member that does not face the plate member, and a plurality of the partitions provided side by side in the width direction. In the width directionIt is provided near the antinode of the vibration mode.
[0020]
  If the plate material is not connected to both sides of the core material, it is easy to bend at the joint between the plate material and the core material, and the bending rigidity in the width direction is remarkably reduced. However, according to the high-rigidity panel described above, it is formed between the panels. By fixing the partition at a predetermined position in the longitudinal direction so as to fill the space, it is possible to suppress a decrease in bending rigidity in the width direction. That is, it is possible to realize a high-rigidity panel at a low cost by using only one plate material. In general, since a plurality of high-rigidity panels are used side by side, it is necessary to consider not only the vibration of a single high-rigidity panel but also the vibrations of the entire high-rigidity panel connected. According to the panel, since the partition is provided in the vicinity of the antinode of the vibration mode in the width direction in the plate material and / or the core material, it is possible to improve the effect of reducing the local vibration generated when the entire high rigidity panel provided in plurality is vibrated. .
[0021]
  Claims of the invention6The high-rigidity panel according to claim 1.5In any one of these, The said partition is fixedly provided through the viscoelastic body.
[0022]
According to the above-described high-rigidity panel, the vibration energy is converted into heat energy by the viscous action of the viscoelastic body, and the local vibration damping effect is improved.
[0023]
  Claims of the invention7The high-rigidity panel according to claim 1.6In any one of these, The said partition is a lump shape with the width | variety in the longitudinal direction of the said core material, It is characterized by the above-mentioned.
[0024]
Since the partition is in the form of a lump having a width in the longitudinal direction of the core material, the contact area with the core material or the plate material is increased, and the restraining effect on the core material or the plate material is increased. Therefore, the effect of reducing local vibration can be further improved.
[0025]
  Claims of the invention8The high-rigidity panel according to claim 1.7In any one of these, The said partition is fixedly provided so that at least one part of the space formed between the said board | plate material and the said core material can be connected.
[0026]
When providing a partition so that at least a part of the space formed between the plate material and the core material can communicate, and providing a partition so as to fill the entire space formed between the plate material and the core material In the case, the effect of reducing local vibration is almost the same. This is because, as shown in FIG. 5, the amplitude due to local vibration is the largest in the vicinity of the center in the height direction of the core material, so that local vibration can be suppressed if at least that portion is constrained by a partition. It is. Therefore, according to the high-rigidity panel described above, the cost can be reduced by using fewer members. Further, it is difficult to fit the partition in accordance with the shape of the core material, and there is a disadvantage that contact noise is generated due to local vibration if fixed without being fitted accurately. The above-described high-rigidity panel can eliminate such inconvenience.
[0027]
  Claims of the invention2The high-rigidity panel described inA high-rigidity panel comprising two plate members arranged in parallel and a core member arranged between the two plate members and connected to each of the plate members, between the plate member and the core member Is arranged at a predetermined position in the longitudinal direction so as to partition the space formed, and has one or more partitions fixed to the plate member and / or the core member, and a plurality of the partitions are provided in the width direction. Further, in the width direction of the plate material and / or the core material related to the entire high-rigidity panel.It is provided near the antinode of the vibration mode.
[0028]
  According to the high-rigidity panel described above, the concrete is divided into predetermined positions in the longitudinal direction of the core material so as to fill the space formed between the plate material and the core material without placing concrete on the entire top surface of the core material. It is possible to reduce vibration and noise, particularly chatter vibration and chatter noise due to local vibration of the constituent thin plates, and suppress a significant increase in the weight of the entire floor structure. Further, since this partition reduces local vibration and prevents buckling failure, it is not necessary to increase the thickness of the constituent thin plate. Therefore, there is no problem of impairing earthquake resistance and workability. In addition, by installing the partitions at a plurality of locations in the longitudinal direction of the core material, the core material and the plate material can be more reliably restrained, and the effect of reducing local vibration can be further improved. Further, since concrete is not placed over the entire top surface of the core material, a sufficient space for piping and wiring in the high-rigidity panel can be secured. Further, it is not necessary to place concrete on the entire upper surface of the core material, to apply a soundproofing material or a vibration damping material, and to increase the thickness of the constituent thin plate, thereby reducing costs. Also,In general, since multiple high-rigidity panels are used together, it is necessary to consider not only the vibration of a single high-rigidity panel but also the vibrations of the entire high-rigidity panel connected together.But,According to the high-rigidity panel described above, the partition is provided near the antinode of the vibration mode in the width direction of the plate material and / or the core material, so that the effect of reducing local vibration generated when the entire high-rigidity panel provided in plural is vibrated. To improveAlsoit can.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.
[0030]
First, the highly rigid panel 1 which concerns on 1st embodiment of this invention is demonstrated based on FIG.1 and FIG.2. As shown in FIG. 1, the high-rigidity panel 1 of the present embodiment is arranged between two plate members 2a and 2b and the two plate members 2a and 2b, and each of the plate members 2a and 2b. And a folded plate 3 as a connected core material. A partition 4 is disposed at a predetermined position in the longitudinal direction of the folded plate 3 and fixed to the folded plate 3 in a space formed between the folded plate 3 and the plate material 2a. If only the local vibration of the folded plate 3 is a problem, the partition 4 is fixed only to the folded plate 3 as in this embodiment, and if only the local vibration of the plate member 2a is a problem, the partition 4 is provided. If only the plate member 2a is fixed and local vibrations of both the folded plate 3 and the plate member 2a are problematic, it is preferable to fix the partition 4 to both the folded plate 3 and the plate member 2a. The partition installation location may be determined as appropriate according to the location.
[0031]
The folded plate 3 is made of, for example, a metal such as a thin steel plate, and is formed by extrusion molding, press molding, roll forming molding, or the like, and the crest and trough lines are installed in parallel to the longitudinal direction of the high-rigidity panel 1. The folded plate 3 has high strength and is easy to handle, and can effectively improve the bending rigidity around the width direction axis of the high-rigidity panel 1.
[0032]
The plate members 2a and 2b are made of a metal such as a thin steel plate, for example, and flat wood such as a veneer plywood or a particle board may be used. Further, depending on the use of the high-rigidity panel 1, for example, when used as a floor panel, a flat wood such as a veneer plywood or a particle board is used as the upper plate member 2a, a thin steel plate or the like is used as the lower plate member 2b, etc. The material and thickness of the two plate members 2a and 2b may be different.
[0033]
The folded plate 3 and the plate members 2a and 2b are connected by, for example, a screw, a bolt / nut, an adhesive, welding such as spot welding, or a combination thereof. When connecting with bolts and nuts, etc., it is necessary to provide bolt holes at the corresponding positions of the plate members 2a, 2b and the folded plate 3, and in order to strengthen tightening, a reinforcing member such as a rectangular thin metal plate is used. May be used.
[0034]
The partition 4 in this embodiment is plate-shaped, and may be composed of various materials such as metals such as iron and steel, concrete, and wood. A plurality of the partitions 4 are arranged at predetermined positions in the longitudinal direction of the folded plate 3, but one partition 4 may be arranged only at one place in the longitudinal direction. Moreover, although the partition 4 of this embodiment is arrange | positioned 1 each in each of the space formed between one board | plate material 2a and the folded board 3, an installation location can be taken variously. For example, it arranges every other space in the space formed between one plate material 2a and the folded plate 3, or arranges it in the space formed between the other plate material 2b and the folded plate 3, It can also be placed in space.
[0035]
Next, a modified example of the partition 4 included in the high-rigidity panel 1 of the present embodiment will be described with reference to FIGS. The partition 4 in FIG. 1 fills the entire triangular space formed between the plate member 2a and the folded plate 3, but the partition 4 shown in FIGS. A part of the triangular space can communicate. 2A, the valley of the folded plate 3, the upper part of the triangular space in FIG. 2B, and the upper and lower parts of the triangular space in FIG. 2C can communicate.
[0036]
When the partition 4 is provided so that at least a part of the triangular space formed between the plate material 2a and the folded plate 3 can be communicated as shown in FIGS. 2A to 2C, the cost is reduced with fewer members. The effect of reducing local vibration is almost the same as the case where the partition 4 is provided so as to fill the entire triangular space formed between the plate material 2a and the folded plate 3 as shown in FIG. Become. This is because, as shown in FIG. 5, the amplitude due to the local vibration becomes the largest in the vicinity of the center in the height direction of the folded plate 3, so that local vibration can be suppressed by constraining at least that portion with the partition 4. Because it can. In addition, it is difficult to fit the partition 4 in accordance with the cross-sectional shape of the folded plate 3, and there is a disadvantage that contact noise is generated due to local vibration if fixed without being fitted accurately. Inconvenience is also eliminated. In addition, since local vibration becomes the maximum in the height direction center vicinity of the folding plate 3, it is preferable to restrain at least the part with the partition 4. FIG.
[0037]
Next, a second embodiment according to the present invention will be described with reference to FIG. The high-rigidity panel 11 of this embodiment is obtained by replacing the folded plate 3 used as the core material in the first embodiment according to the present invention with a U-shaped profile 13. And like 1st embodiment which concerns on this invention, although the partition 4 is arrange | positioned in the predetermined position of the longitudinal direction of the co-shaped member 13, and is fixed to the co-shaped member 13, this embodiment The partition 4 in FIG. 1 is not plate-shaped but has a thickness in the longitudinal direction of the U-shaped member 13, and is fitted into the cross-section in the width direction of the U-shaped member 13 to restrain the shape of the U-shaped member 13. Yes.
[0038]
The plate materials 2a and 2b are the same as those of the first embodiment according to the present invention, and the U-shaped profile 13 is made of a metal such as a thin steel plate, and is formed by extrusion molding, press molding, roll forming molding or the like. A plurality of parallel lines are provided between 2a and 2b at intervals. As in the first embodiment according to the present invention, for example, a screw, a bolt / nut, an adhesive, spot welding, or the like, or a combination thereof is used to connect each of the U-shaped members 13 and the plate members 2a and 2b. Further, the partition 4 is also similar to the first embodiment according to the present invention, and may be composed of various materials such as metals such as iron and steel, concrete, and wood. One partition 4 may be arranged at only one place, or a notch may be provided so that a part of the partition 4 can be communicated without being completely fitted inside the cross section in the width direction.
[0039]
In addition, the core material which concerns on this invention is not limited to forms like the folded plate 3 in said 1st embodiment, or the U-shaped profile 13 in 2nd embodiment. For example, various shapes such as a folded plate that is alternately bent and formed in parallel with the plate materials 2a and 2b, and a corrugated plate that undulates with a smooth curve without a clear crease in a mountain line and a valley line are considered. What is necessary is just to connect with each board | plate material 2a, 2b and to raise the rigidity of the panel 1 and 11 whole.
[0040]
Next, a third embodiment according to the present invention will be described with reference to FIG. The high-rigidity panel 21 of the present embodiment includes only one plate 2 and uses the folded plate 3 as a core, and the partition 4 is disposed on the side of the folded plate 3 that does not face the plate 2. A plurality of the partitions 4 are preferably fixed at predetermined positions in the longitudinal direction. The core material is not limited to the folded plate 3 as long as the cross section in the width direction has an undulation, and for example, a corrugated plate or the like may be used.
[0041]
The folded plate 3 is the same as that of the first embodiment according to the present invention. For example, the folded plate 3 is made of a metal such as a thin steel plate, is formed by extrusion molding, press molding, roll forming molding, or the like, and is parallel to the longitudinal direction of the high-rigidity panel 21. The mountain line and the valley line will be installed. Moreover, the board | plate material 2 is the same as that of 1st and 2nd embodiment which concerns on this invention, for example, consists of metals, such as a thin steel plate, You may use flat timbers, such as a veneer plywood and a particle board. Moreover, although the partition 4 in this embodiment shown by FIG. 4 can communicate a part of triangular space in the folded plate 3 like FIG.2 (a)-(c), it is triangular shape. It may be provided so as to fill the entire space, or may be provided on the side of the folded plate 3 facing the plate member 2.
[0042]
When the plate member 2 is connected to only one side of the folded plate 3, the bending rigidity in the width direction is usually extremely low. However, as shown in FIG. 4, the partition 4 is fixed to the side of the folded plate 3 not facing the plate member 2. By providing, the fall of the bending rigidity of the width direction can be suppressed. That is, it is possible to realize the high-rigidity panel 21 at low cost by using only one sheet material 2.
[0043]
In addition, the partition 4 which concerns on this invention is not limited to what is based on said 1st-3rd embodiment, For example, metal, such as iron and steel, the lump which consists of concrete, sandbags, etc. of core materials, etc. You may use a thing with a width | variety in a longitudinal direction. As a result, the contact area with the core material such as the folded plate 3 and the U-shaped profile 13 and the plate materials 2, 2 a, 2 b is increased, and the restraining effect on the core material and the plate materials 2, 2 a, 2 b is increased. The reduction effect is further improved. In addition, by making the partition 4 heavy with metal, concrete, sand, etc., and increasing the weight locally on the part with a large vibration amplitude of the floor structure composed of a plurality of high-rigidity panels arranged in the width direction, It is also possible to improve the effect of reducing heavy floor impact sound.
[0044]
In order to fix the partition 4 to the core material such as the plate materials 2, 2 a, 2 b and / or the folded plate 3, the U-shaped profile 13, for example, bolts / nuts, adhesives, etc. are used, or spot welding or the like is used. You may give it. As shown in FIG. 1, when the viscoelastic adhesive 5 or the like is used, the vibration energy is converted into heat energy by the viscous action of the viscoelastic body, and the local vibration of the high-rigidity panel 1 is quickly attenuated. It can relieve the discomfort of vibration and chatter sound.
[0045]
As the viscoelastic body 5, a polymer material having a loss coefficient of 0.05 to 5.0 is preferably used, and an adhesive 5, rubber, or the like can be used. In addition, anything that exhibits viscoelastic properties can be used.
[0046]
It should be noted that the work of binding the plate materials 2, 2 a, 2 b and the folded plate 3 and the operation of fixing the partition 4 to the plate materials 2, 2 a, 2 b and / or the folded plate 3 can be performed at either the construction site or the factory. Good.
[0047]
As described above, by providing the partition 4 on the high-rigidity panels 1, 11 and 21, vibration and noise, particularly chatter vibration due to local vibration of the structural thin plate, can be achieved without placing concrete over the entire upper surface of the folded plate 3. -Chatter noise can be reduced, and a significant increase in the weight of the entire floor structure including the high-rigidity panels 1, 11, 21 can be suppressed. Further, since the partition 4 reduces local vibration and prevents buckling failure, it is not necessary to increase the thickness of the constituent thin plate. Therefore, there is no problem of impairing earthquake resistance and workability. Further, by installing the partition 4 at a plurality of locations in the longitudinal direction of the core material such as the folded plate 3 and the U-shaped profile 13, the core materials such as the folded plate 3 and the U-shaped profile 13 and the plate materials 2, 2a and 2b It is possible to more reliably restrain and further improve the local vibration reduction effect. Further, since concrete is not placed over the entire top surface of the folded plate 3, a sufficient space for piping and wiring in the high-rigidity panels 1, 11 and 21 can be secured. Further, since it is not necessary to place concrete on the entire upper surface of the folded plate 3, apply a soundproofing material or a vibration damping material, and increase the thickness of the constituent thin plate, the cost can be reduced.
[0048]
In addition, it is preferable to constrain a portion having a large amplitude with the installation location of the partition 4 being in the vicinity of the antinode 10 (see FIG. 5) of the vibration mode of the core material. In addition, since different vibration modes are generated depending on the frequency, it is more preferable to provide a partition in the vicinity of the antinodes of the vibration modes in the frequency range in question. By doing so, it is possible to improve the local vibration reduction effect while minimizing the increase in the total weight of the high-rigidity panels 1, 11 and 21 using less material.
[0049]
In addition, the effect which reduces the vibration of the high rigid panels 1,11,21 whole can be anticipated by installing the partition 4 in the center vicinity of the longitudinal direction of the high rigid panels 1,11,21.
[0050]
In general, since a plurality of high-rigidity panels 1, 11 and 21 are used side by side in the width direction, not only vibration of the high-rigidity panels 1, 11 and 21 but also a plurality of connected high-rigidity panels 1 and 11 are used. , 21 also needs to be considered. Therefore, the installation positions of the partitions 4 in the core members such as the plate members 2, 2 a, 2 b and / or the folded plate 3 and the U-shaped member 13 related to the entire high rigidity panels 1, 11, 21 arranged in the width direction. By making it near the antinode of the vibration mode in the width direction, it is possible to improve the effect of reducing local vibrations that occur when the entire high-rigidity panels 1, 11, 21 arranged in plurality are vibrated. It should be noted that the vibration mode in the width direction of the core material such as the folded plate 3 and the U-shaped profile 13 relating to the whole of the high-rigidity panels 1, 11 and 21 provided side by side in the width direction is the dimensions of the panels 1, 11 and 21, It varies depending on the number of panels 1, 11 and 21 provided.
[0051]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0052]
By providing a partition at a predetermined position in the longitudinal direction of the core material so as to fill the space formed between the plate material and the core material, the concrete material does not have to be placed on the entire top surface of the core material and the core material. It is possible to reduce vibration and noise, especially chatter vibration and chatter noise due to local vibration of the thin plate, only by providing a partition at a predetermined position in the longitudinal direction of the core material so as to fill the space formed between Yes, a significant increase in the weight of the entire floor structure can be suppressed. Moreover, since the partition reduces local vibration and prevents buckling failure, it is not necessary to increase the thickness of the constituent thin plate. Therefore, there is no problem of impairing earthquake resistance and workability.
[0053]
In addition, by installing the partitions at a plurality of locations in the longitudinal direction of the core material, the core material and the plate material can be more reliably restrained, and the effect of reducing local vibration can be further improved.
[0054]
In addition, since concrete is not placed over the entire top surface of the core material and is not filled with a soundproof material, a sufficient space for piping and wiring in the high-rigidity panel can be secured.
[0055]
Further, it is not necessary to place concrete on the entire top surface of the core material, to apply a soundproofing material or a vibration damping material, and to increase the thickness of the constituent thin plate, thereby reducing costs.
[0056]
Moreover, it is possible to effectively improve the rigidity of the entire panel by using a plate material having a corrugated shape such as a corrugated shape or a folded plate shape as the core material.
[0057]
In addition, by connecting the core material having a undulation in the cross section in the width direction to the plate material, and fixing the partition at a predetermined position in the longitudinal direction on the side of the core material not facing the plate material, the plate material becomes one of the core materials. It is possible to suppress a decrease in the bending rigidity in the width direction due to the presence of the gap. That is, it is possible to realize a high-rigidity panel at a low cost by using only one plate material.
[0058]
Further, by providing a partition near the antinode of the vibration mode, the effect of reducing local vibration can be further improved while minimizing the increase in the total weight of the floor structure.
[0059]
Further, by fixing the partition via the viscoelastic body, the vibration energy is converted into heat energy by the viscous action of the viscoelastic body, and the local vibration damping effect is improved.
[0060]
Moreover, by making the partition into a lump shape having a width in the longitudinal direction of the core material, the effect of restraining the core material and the plate material is increased, and the effect of reducing local vibration can be further improved.
[0061]
In addition, if a partition is provided so that at least a part of the space formed between the plate material and the core material can communicate with each other, the cost between the plate material and the core material can be reduced while using fewer members. The effect of reducing local vibrations equivalent to the case where the partition is provided so as to fill the entire space formed in the case can be obtained. Furthermore, it is possible to eliminate the inconvenience that noise is generated by fixing the partition without accurately matching the shape of the core material.
[0062]
In addition, when a plurality of high-rigidity panels are used in combination, if the partition is provided near the antinode of the vibration mode in the width direction of the plate material and / or the core material, it occurs when the entire high-rigidity panel provided in plurality vibrates. The effect of reducing local vibration can be improved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a high-rigidity panel according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a modification of the partition included in the high-rigidity panel according to the first embodiment of the present invention.
FIG. 3 is an exploded perspective view showing a high-rigidity panel according to a second embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a highly rigid panel according to a third embodiment of the present invention.
FIG. 5 is an explanatory diagram showing an example of a numerical analysis result regarding a local vibration mode of a folded plate used in a high-rigidity panel.
[Explanation of symbols]
1,11,21 High rigidity panel
2,2a, 2b Plate material
3 Folded plate (core material)
3a Folded plate slope
4 partitions
5 Adhesive (viscoelastic body)
10 Belly of vibration mode
13 U-shaped section (core)

Claims (11)

Two plates arranged in parallel;
A high-rigidity panel comprising a core member disposed between two plate members and connected to each of the plate members ;
Arranged at a predetermined position in the longitudinal direction so as to partition a space formed between the plate material and the core material, and having one or more partitions fixed to the plate material and / or the core material ,
A high-rigidity panel, wherein the partition is provided in the vicinity of a vibration mode antinode in the longitudinal direction of the plate member and / or the core member . Two plates arranged in parallel;
A high-rigidity panel comprising a core member disposed between two plate members and connected to each of the plate members;
Arranged at a predetermined position in the longitudinal direction so as to partition a space formed between the plate material and the core material, and having one or more partitions fixed to the plate material and / or the core material,
A high-rigidity panel, wherein a plurality of the partitions are provided in the vicinity of an antinode of a vibration mode in the width direction of the plate member and / or the core member with respect to the entire high-rigidity panel provided in a plurality in the width direction. The high-rigidity panel according to claim 1 or 2 , wherein a cross section in the width direction of the core material has a shape with undulations. It is a high-rigidity panel comprising one plate material, and a cross-section in the width direction having an undulation, and a core material connected to the plate material ,
The core member is fixed on the side not facing the plate member, and has one or more partitions provided in the vicinity of the antinode of the vibration mode in the longitudinal direction of the plate member and / or the core member. High rigidity panel. It is a high-rigidity panel comprising one plate material, and a cross-section in the width direction having an undulation, and a core material connected to the plate material,
Having one or more partitions fixed to the side of the core material not facing the plate material;
A high-rigidity panel, wherein a plurality of the partitions are provided in the vicinity of an antinode of a vibration mode in the width direction of the plate member and / or the core member with respect to the entire high-rigidity panel provided in a plurality in the width direction. The high-stiffness panel according to any one of claims 1 to 5 , wherein the partition is fixed via a viscoelastic body. The high-stiffness panel according to any one of claims 1 to 6 , wherein the partition has a lump shape having a width in the longitudinal direction of the core member. The high rigidity according to any one of claims 1 to 7 , wherein the partition is fixed so that at least a part of a space formed between the plate member and the core member can be communicated. panel. Two plates are placed in parallel,
A core material is disposed between the two plate members and connected to each of the plate members;
Place 1 or more partition that partitions the space formed on the ventral vicinity of the vibration mode in the longitudinal direction of the plate and / or the core material between the front Symbol plate the core, the plate and / or the core A method for reducing vibration of a high-rigidity panel, characterized by being fixed to a material.   The method for reducing vibration of a high-rigidity panel according to claim 9, wherein a cross-section in the width direction of the core material has a undulation shape. The cross-section in the width direction is connected to the plate material having a shape with undulations,
One or more partitions are fixed on the side of the core member not facing the plate member and in the vicinity of the antinode of the vibration mode in the longitudinal direction .

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