JP7267682B2 - Damping construction method and damping structure for steel runners - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vibration control method and a vibration control structure for a steel runner fixed to a concrete ceiling slab of a reinforced concrete building.

In reinforced concrete buildings such as collective housing such as condominiums, for example, a pair of upper and lower steel runners with a U-shaped cross section orthogonal to the extension direction are fixed to each of the reinforced concrete slabs of the ceiling and floor, and the ceiling A plurality of vertically extending studs (studs) are erected between the side steel runners and the floor side steel runners to construct the steel base of the partition wall. Here, since the reinforced concrete slab facing the outside of a reinforced concrete building tends to repeat expansion and contraction under the influence of heat from the outside, a heat insulation method is usually used to minimize the thermal influence. be constructed. In particular, since the ceiling slab on the top floor of a reinforced concrete building is susceptible to thermal effects from sunlight, etc., external insulation construction methods are often adopted, in which heat insulation is placed above the ceiling slab. Due to oblique line restrictions, etc., in some areas of the ceiling slab, it may be necessary to adopt an internal insulation construction method in which a heat insulating material is placed on the lower side of the ceiling slab. On the other hand, the inverted beam that extends across the living space on the top floor protrudes to the roof of the reinforced concrete building in such a way that the top and sides are exposed, Ceiling slabs may also be provided. In these cases, the area to which the internal heat insulation method is applied and heat conduction from the reverse beam may have a thermal effect on the area to which the external heat insulation method is applied.

When the above thermal effects are applied, heat propagates from the ceiling slab to the steel runners fixed to the ceiling slab, and both the reinforced concrete ceiling slab and the steel runners, which have different coefficients of thermal expansion, expand and contract. will do. Here, the steel runner is fixed to the ceiling slab at multiple points spaced apart in its extending direction, has a higher thermal expansion coefficient than the reinforced concrete ceiling slab, and expands and contracts more than the ceiling slab. do. For this reason, strain energy accumulates in the fixing portion of the steel runner, and when this strain energy exceeds the fixing force of the steel runner to the ceiling slab, the steel runner is slightly displaced to release the strain energy. As a result, the steel runners generate a metallic impact sound, and the generation of this impact sound greatly impairs the living environment of the reinforced concrete building. As a countermeasure against such phenomena, for example, in Non-Patent Document 1, heat is transferred to the ceiling slab and steel runners by covering the periphery of the inverted beam exposed on the roof of the reinforced concrete building with a heat insulating material. and suppress the generation of impact noise. In addition, there are other measures such as loosening the fixings so that the steel runner in contact with the ceiling slab can expand and contract, interposing a sliding material in the fixing part of the steel runner to the ceiling slab, and shortening the length of the steel runner. is assumed.

Tadaaki Miyagawa, 2 others, "Occurrence of Mysterious Sounds in Housing Complexes and Countermeasures", Report of Ando Construction Technology Research Institute, 2008, Vol. 14, p. 13-19

However, the countermeasure of Non-Patent Document 1 described above can be applied only when the exposed reverse beam on the roof of the reinforced concrete building is the main factor of heat conduction, and the ceiling slab internal heat insulation method It was not applicable when heat propagated from the application area was the main factor. In addition, assuming that the reinforced concrete building is a condominium, for example, the above other measures cannot deviate from the description of important matters, that is, the structural requirements cannot be changed. application was impractical.
The present invention has been made in view of the above problems, and its object is to suppress the generation of impact noise from steel runners without changing the structural requirements of reinforced concrete buildings.

(Mode of Invention)
The following aspects of the invention exemplify configurations of the present invention, and will be described separately in order to facilitate understanding of the various configurations of the present invention. Each term does not limit the technical scope of the present invention, and while considering the best mode for carrying out the invention, replaces, deletes, or further The technical scope of the present invention can also include those to which the constituent elements are added.

(1) In a reinforced concrete building, a steel structure with a U-shaped cross section perpendicular to the extension direction is fixed to the concrete ceiling slab to receive the upper ends of the studs that make up the base of the partition wall. Vibration damping construction method for a runner, in which the steel runner includes two projections corresponding to the two legs of the U-shape, and a connecting portion connecting between the two projections. , wherein the connecting portion is fixed to the ceiling slab at a plurality of fixed points spaced apart in the extending direction of the steel runner, with the tips of the two protrusions facing downward; Between the two protrusions, the upper ends of the plurality of studs are fitted with a gap in the extending direction of the steel runner, and the steel runner is between the two protrusions. At least in the vicinity of each of the plurality of fixing points in the gap between the two, a vibration damping member formed of a material having a smaller coefficient of thermal expansion than the steel runner is installed in such a manner that it is in close contact with both of the at least two protrusions. and any one of wood, plastic, rubber, and urethane foam is used as the material of the damping member, and the damping member is fitted to the upper ends of the plurality of studs of the steel runner. The vibration damping member is installed except for the positions where it is fixed, and the vibration damping member has a shape that fills at least the gap between the two opposing protrusions in the vicinity of each of the plurality of fixing points, with respect to the two protrusions Vibration damping construction method for steel runners fixed by pressing (claim 1).

The damping construction method for steel runners described in this section is for a reinforced concrete building. It is intended for the upper steel runner that is fixed to the ceiling slab. The steel runner to be damped has a U-shaped cross section orthogonal to the extending direction, and two protrusions corresponding to the two legs of the U-shape, and these two protrusions and a connecting portion for connecting between the portions. Then, the connecting portion is fixed to the ceiling slab in such a manner that the tips of the two projecting portions are directed downward. That is, it is fixed so that the upper surface of the connection portion comes into contact with the lower surface of the ceiling slab when the tip of the projecting portion is directed downward.

At this time, the connecting portion is formed by driving, for example, a concrete driving pin or a screw for concrete with a plug, etc. from the lower surface side of the connecting portion at a plurality of fixing points spaced apart in the extending direction of the steel runner. Fixed. Further, the steel runner to be damped has upper ends of a plurality of studs fitted between the two projecting portions at intervals in the extending direction of the steel runner. That is, the plurality of studs are installed at intervals in the extending direction of the steel runner, the upper end of each stud is fitted to the steel runner to be damped, and the lower end of each stud is made of concrete. It is fitted to a steel runner fixed to the floor slab, a runner that forms the lintel of the opening of the partition wall, or the like. In this way, the base of the partition wall is constructed.

In the steel runner damping method described in this section, a material having a smaller thermal expansion coefficient than the steel runner is used in the gap between the two protrusions of the steel runner to be damped. A damping member made of plastic, rubber, or foamed urethane is installed. At this time, at least in the vicinity of each of the plurality of fixing points spaced apart in the extending direction of the steel runner when the connecting portion of the steel runner is fixed to the ceiling slab, two vibration damping members are provided. Install in the gap between two protrusions. Furthermore, the vibration damping member is installed in such a manner as to be in close contact with both of the at least two protrusions, that is, in close contact with both inner surfaces of the two protrusions facing each other. In addition, the vibration damping member is installed on the steel runner except for the positions where the upper ends of the plurality of studs are fitted , and at this time, the vibration damping member is placed near each of the plurality of fixing points at least in the opposite direction. It is fixed to the two protrusions as a shape that fills the gap between the two protrusions. Here, mention is made of the metallic impact sound generated from the steel runner. This phenomenon is caused by the difference in the coefficient of thermal expansion between the concrete ceiling slab and the steel runner. , is caused by the vibration of the two lobes of the steel runner.

Therefore, in the steel runner damping construction method described in this section, by installing the damping member as described above, when the strain energy is released near the fixed part of the steel runner, the two projecting parts to constrain the vibration of As a result, even if both the concrete ceiling slab and the steel runners are subject to external thermal influences, the impact noise from the steel runners is suppressed when the strain energy is released. be. Moreover, the damping member is made of a material with a smaller coefficient of thermal expansion than the steel runner. Since it is in close contact with the projecting portion, the generation of impact noise is effectively suppressed. Furthermore, since the installation of damping members as described above does not correspond to changes in the structural requirements of reinforced concrete buildings, the generation of impact noise can be suppressed without changing the structural requirements of reinforced concrete buildings. become a thing.

(2) In the above item (1), the damping member is installed in all the gaps between the two protrusions of the steel runner, excluding the positions where the upper ends of the plurality of studs are fitted. A damping construction method for steel runners (claim 2).
The damping construction method for steel runners described in this section requires the installation of damping members for all the gaps between the two protrusions of the steel runners, except for the positions where the upper ends of multiple studs are fitted. By doing so, the upper end of the stud or damping member is placed in the gap between the two projections over the entire length of the steel runner. As a result, the vibration of the two projecting portions is suppressed over the entire length of the steel runner, thereby further suppressing the generation of impact noise.

(3) In items (1) and (2) above, the steel runner is installed so that the damping member fills the space surrounded by the two projecting portions and the connecting portion of the steel runner. Vibration control method (claim 3).
The steel runner damping construction method described in this section fills the space surrounded by the two projecting parts and the connecting part when installing the damping member in the gap between the two projecting parts of the steel runner. Thus, the damping member is installed. That is, in a cross-sectional view orthogonal to the extending direction of the steel runner with the ceiling slab on the upper side, the damping member is placed on the inner surface of the two protrusions from the position where it contacts the lower surface of the connection part to the vicinity of the lower end of the protrusion. Install it tightly. As a result, the vibration damping member adheres to the projecting portion of the steel runner from the upper end to the lower end, restraining the impact noise more effectively.

(4) In a reinforced concrete building, a U-shaped cross section perpendicular to the extension direction is fixed to the concrete ceiling slab to receive the upper ends of the studs that make up the base of the partition wall. A vibration damping structure for a runner, wherein the steel runner includes two projections corresponding to the two legs of the U-shape, and a connecting portion connecting between the two projections. , wherein the connecting portion is fixed to the ceiling slab at a plurality of fixed points spaced apart in the extending direction of the steel runner, with the tips of the two protrusions facing downward; The upper ends of the plurality of studs are fitted between the two protrusions with a gap in the extending direction of the steel runner, and the gap between the two protrusions of the steel runner A vibration damping member made of a material having a smaller thermal expansion coefficient than the steel runner is installed in the vicinity of at least each of the plurality of fixed locations in such a manner as to be in close contact with at least both of the two protrusions. and the material of the damping member is any one of wood, plastic, rubber, and foamed urethane, and the damping member fits the upper ends of the plurality of studs of the steel runner. and the vibration damping member has a shape that fills a gap between at least the two opposing protrusions in the vicinity of each of the plurality of fixing locations, wherein the two A damping structure of steel runners fixed against two projections (claim 4).

(5) In the above item (4), the damping member is installed in all the gaps between the two protrusions of the steel runner, excluding the positions where the upper ends of the plurality of studs are fitted. Vibration damping structure of steel runners (Claim 5).
(6) In items (4) and (5) above, the damping member is installed so as to fill the space surrounded by the two projecting portions and the connecting portion of the steel runner. A damping structure for a manufactured runner (Claim 6).
The damping structures for steel runners described in (4) to (6) are respectively used in the damping construction methods for steel runners in (1) to (3) above, so that the above ( It has the same effect as the steel runner damping construction method described in 1) to (3).

Since the present invention is configured as described above, it is possible to suppress the generation of impact noise from the steel runner without changing the structural requirements of the reinforced concrete building.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view around a steel runner of a reinforced concrete building to which the steel runner damping construction method according to the embodiment of the present invention is applied; 1 is an image diagram showing a space between a ceiling slab and a ceiling base in a reinforced concrete building to which the steel runner damping construction method according to the embodiment of the present invention is applied; FIG. Fig. 4 is a graph showing the time change of the acceleration amplitude when the steel runner vibrates, (a) is a graph of the steel runner to which the steel runner damping method according to the embodiment of the present invention is applied, (b) ) is the graph for a conventional steel runner. Fig. 2 is a graph showing frequency characteristics of vibration acceleration when a steel runner vibrates, (a) is a graph of a steel runner to which the steel runner damping method according to the embodiment of the present invention is applied; ) is the graph for a conventional steel runner.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described based on the accompanying drawings. Here, detailed description of the same or corresponding parts as in the prior art is omitted, and the same or corresponding parts are indicated by the same reference numerals throughout the drawings.
FIG. 1 shows an example of a steel runner damping structure 10 according to an embodiment of the present invention constructed by a steel runner damping construction method according to an embodiment of the present invention. FIG. 2 is an image diagram showing the space between the ceiling slab and the ceiling foundation of a reinforced concrete building provided with the damping structure 10 of steel runners. 1 and 2 show the image of a living room on the top floor of a reinforced concrete building. omitted.

First, referring to FIGS. 1 and 2, the structure of a steel runner 14 and its peripheral members to which the steel runner damping construction method and damping structure 10 according to the embodiment of the present invention are applied will be described. do. The steel runner 14 has a U-shaped cross section perpendicular to the extending direction (the cross section in FIG. 1), and includes two protrusions 16 extending downward from the top in FIG. and a connecting portion 18 for connecting between 16 . The steel runner 14 is fixed to the ceiling slab 12 by a concrete driving pin 20 in the illustrated example, with the upper surface of the connecting portion 18 in contact with the concrete ceiling slab 12 . By providing such fixing points at a plurality of locations spaced apart in the extending direction of the steel runner 14, the steel runner 14 can be It is fixed to the ceiling slab 12 .

Furthermore, the steel runner 14 is fitted with the upper ends of a plurality of studs 22 that constitute the base of the partition wall constructed in the living room of the reinforced concrete building. It is fitted at a position with a slight gap from the lower surface 18a of the connecting portion 18 of the manufactured runner 14. As shown in FIG. Also, as can be seen in FIG. 2, the plurality of studs 22 are spaced apart in the extending direction of the steel runner 14, and wooden studs 22 are used in this embodiment. A ceiling runner 26 is fixed to each vertically extending stud 22 at a predetermined height via a fixing screw 28 . In the present embodiment, the ceiling runner 26 is made of steel having a U-shaped cross section perpendicular to the extending direction, like the steel runner 14, and one end of a plurality of joists 30 is provided therein. is mated. A plurality of ceiling joists 30 constitute the foundation of the ceiling of the living room, and are installed at intervals in the extending direction of the ceiling runners 26.例文帳に追加Each of the joists 30 is fitted at a position slightly spaced from the deepest portion 26a inside the ceiling runner 26, and in this embodiment steel ones are used.

A gypsum board 34 as a wall finishing material is fixed to the plurality of studs 22 installed as described above, just below the fixing position of the ceiling runner 26. , a gypsum board 32 as a ceiling finishing material is fixed with one end in close contact with the vicinity of the upper end of the gypsum board 34 . A space surrounded by such gypsum boards 32 and 34 is used as a room in a living room of a reinforced concrete building. The materials of the studs 22 and the joists 30 are not limited to those of this embodiment, and may be wood, steel, or other materials. In addition, the steel runner 14 does not have to have the two protruding portions 16 having the same protruding length (vertical length in FIG. 1), and as in the example of FIG. It may be shorter than the projecting portion 16 . Furthermore, the steel runner 14 is not limited to the fixing method using the concrete driving pin 20, and may be fixed using other appropriate members such as screws for concrete with a plug. If there is sufficient space between the ceiling slab 12 and the ceiling foundation, the ceiling foundation may be supported via hanging bolts fixed to the ceiling slab 12 .

Next, a damping structure 10 for steel runners according to an embodiment of the present invention will be described. As shown in FIGS. 1 and 2 , the steel runner damping structure 10 has a damping member 24 installed in a gap between two projections 16 of a steel runner 14 . In this embodiment, as can be seen in FIG. 1, the vibration damping member 24 fills the space surrounded by the two projecting portions 16 and the connecting portion 18 of the steel runner 14 so that the two projecting portions 16 It is installed in close contact with the inner surface 16 a and in contact with the lower surface 18 a of the connecting portion 18 . Furthermore, as can be seen in FIG. 2, the damping members 24 are installed in all the gaps between the two projections 16 of the steel runners 14 except for the positions where the upper ends of the plurality of studs 22 are fitted. ing. That is, the damping member 24 is installed between adjacent studs 22 of the plurality of studs 22 or between the end of the steel runner 14 and the stud 22 with respect to the extending direction of the steel runner 14. The installation range includes the vicinity of multiple fixed points of the steel runner 14 .

The vibration damping member 24 is made of a material having a smaller coefficient of thermal expansion than the steel runner 14. Although wood is used in this embodiment, it may be made of plastic, rubber, urethane foam, or the like. It may be made of other material. Furthermore, the damping member 24 is fixed at least to the projecting portion 16 of the steel runner 14, and in the example of FIG. It is fixed by being interposed therebetween, and in the example of FIG. 2, it is also fixed by screws 36 in addition to the same adhesive or pressure-sensitive adhesive as in the example of FIG. However, the method of fixing the damping member 24 may be another fixing method suitable for the material from which the damping member 24 is made.

Here, the steel runner damping structure 10 according to the embodiment of the present invention is not limited to the examples shown in FIGS. 1 and 2 . For example, if the damping member 24 is in close contact with the inner surfaces 16a of the two protruding portions 16 of the steel runner 14, there may be a gap between the lower surface 18a of the connecting portion 18 and the lower end of the protruding portion 16. may be above or below. Furthermore, if the vibration damping member 24 is installed in the vicinity of a plurality of fixing points of the steel runner 14 to the ceiling slab 12 (the positions of the concrete driving pins 20 in this embodiment), all of the vibration damping members 24 between the two projections 16 , and does not have to be in contact with the stud 22 . If the steel runner 14 is fixed to the ceiling slab 12 directly above the upper end of the stud 22 , the damping member 24 may be installed in the vicinity of the stud 22 .

Next, in FIGS. 3 and 4, heat propagates to both the ceiling slab 12 and the steel runner 14, and due to the difference in coefficient of thermal expansion between the concrete ceiling slab 12 and the steel runner 14, 4A and 4B are graphs showing the vibration characteristics of the steel runner 14 when the steel runner 14 produces a metallic percussive sound. The values in these graphs are actually measured values when the above impact sound was actually generated in a living room on the top floor of a reinforced concrete building. , measured with an accelerometer. 3 and 4, the graph of (a) is that of the steel runner 14 to which the steel runner damping construction method according to the embodiment of the present invention is applied, and the graph of (b) is that of the steel It is of the conventional steel runner 14 before the damping construction method for the manufactured runner is applied. Note that the values in the graph of FIG. 4 are measured values at the single-shot exposure vibration acceleration level (LE: vibration acceleration level with a duration of 1 second having energy equal to the energy of the single-shot vibration).

First, referring to FIG. 3, the steel runner 14 to which the steel runner damping construction method of the present invention is applied clearly has a shorter duration of vibration than the conventional steel runner 14. can be confirmed. Specifically, while the conventional runner 14 lasts about 336 ms, the steel runner 14 to which the present invention is applied lasts about 114 ms, and the duration of vibration is reduced to about 1/3. Furthermore, referring to FIG. 4, the steel runner 14 to which the steel runner damping method of the present invention is applied has a reduced single exposure vibration acceleration level compared to the conventional steel runner 14. Specifically, the all-pass (AP) value is reduced by 4.5 dB from 98.6 dB to 94.1 dB. Further, while the conventional steel runner 14 has vibration acceleration level peaks in two frequency bands, the steel runner 14 to which the present invention is applied has vibration acceleration level peaks in one frequency band. It can be seen that the vibration generation mode is also changed. Furthermore, in the conventional steel runner 14, the vibration acceleration level peak is in the 500 Hz band of the 1/3 octave band, whereas in the steel runner 14 to which the present invention is applied, the vibration acceleration level peak is in the 400 Hz band. , the peak frequency is lowered as the level is lowered, and the discomfort of the generated impulsive sound is reduced.

Now, according to the embodiment of the present invention having the above configuration, it is possible to obtain the following effects. That is, as shown in FIGS. 1 and 2, the method for damping steel runners according to the embodiment of the present invention is a pair of upper and lower pairs of studs 22 that support a plurality of studs 22 constituting the foundation of a partition wall in a reinforced concrete building. Among the runners is the upper steel runner 14 which is fixed to the concrete ceiling slab 12 so as to receive the upper ends of a plurality of studs 22 . The steel runner 14 to be damped has a U-shaped cross section orthogonal to the extending direction, and two protruding portions 16 corresponding to the two legs of this U-shaped and a connection portion 18 that connects between the two projecting portions 16 . Then, the connecting portion 18 is fixed to the ceiling slab 12 in such a manner that the tips of the two projecting portions 16 are directed downward. That is, the upper surface of the connecting portion 18 is fixed so as to contact the lower surface of the ceiling slab 12 when the tip of the protruding portion 16 is directed downward.

At this time, in the illustrated example, concrete driving pins 20 are driven from the lower surface 18a side of the connecting portion 18 at a plurality of fixed locations spaced apart in the extending direction of the steel runner 14 . fixed by Furthermore, the steel runner 14 to be damped has upper ends of a plurality of studs 22 fitted between the two protruding portions 16 at intervals in the extending direction of the steel runner 14 . That is, the plurality of studs 22 are installed at intervals in the extending direction of the steel runners 14, the upper end of each stud 22 is fitted to the steel runner 14 to be damped, and the lower end of each stud 22 is is fitted to a steel runner fixed to a concrete floor slab, a runner constituting a lintel of an opening in a partition wall, or the like. In this way, the base of the partition wall is constructed.

In the steel runner damping method according to the embodiment of the present invention, the gap between the two projecting portions 16 of the steel runner 14 to be damped has a coefficient of thermal expansion smaller than that of the steel runner 14. A damping member 24 made of a material (wood in the illustrated example) is installed. At this time, at least in the vicinity of each of the plurality of fixing points spaced apart in the extending direction of the steel runner 14 when the connecting portion 18 of the steel runner 14 is fixed to the ceiling slab 12, A vibrating member 24 is installed in the gap between the two protrusions 16 . Further, the vibration damping member 24 is installed in such a manner as to be in close contact with both of the at least two protrusions 16, that is, in close contact with both inner surfaces 16a of the two protrusions 16 facing each other. Here, mention is made of the metallic impact sound generated from the steel runner 14 . This phenomenon is caused by the difference in coefficient of thermal expansion between the ceiling slab 12 made of concrete and the steel runner 14. Especially in the vicinity of the fixed part of the steel runner 14, the steel runner 14 is slightly displaced and the strain energy is released. It is generated by vibrating the two protruding parts 16 of the steel runner 14 when it is pressed.

Therefore, in the steel runner damping construction method according to the embodiment of the present invention, by installing the damping member 24 as described above, when the strain energy is released near the fixed portion of the steel runner 14 , the vibration of the two protrusions 16 can be restrained. As a result, even if both the concrete ceiling slab 12 and the steel runner 14 are subjected to external thermal influences, the steel runner 14 generates an impulsive sound when the strain energy is released. can be suppressed. Moreover, the vibration damping member 24 is made of a material having a smaller coefficient of thermal expansion than the steel runner 14, so even if heat propagates from the steel runner 14 to the vibration damping member 24, the vibration damping member 24 expands and contracts. Since the two protruding portions 16 are in close contact with each other without bending, it is possible to effectively suppress the generation of impact noise. Furthermore, since the installation of the vibration damping member 24 as described above does not correspond to a change in the structural requirements of reinforced concrete buildings, the generation of impact noise can be suppressed without changing the structural requirements of reinforced concrete buildings. It becomes possible to

Furthermore, in the steel runner damping construction method according to the embodiment of the present invention, as can be seen in FIG. Alternatively, the damping member 24 may be installed so as to fill the space surrounded by the two projecting portions 16 and the connecting portion 18 . 1, the vibration damping member 24 is placed in close contact with the inner surfaces 16a of the two projecting portions 16 from the position contacting the lower surface 18a of the connecting portion 18 to the vicinity of the lower end of the projecting portion 16. As shown in FIG. As a result, the vibration damping member 24 is in close contact with the projecting portion 16 of the steel runner 14 from the upper end to the lower end, so that the generation of impact noise can be suppressed more effectively.

Also, as can be seen in FIG. 2, in the steel runner damping construction method according to the embodiment of the present invention, the damping member 24 is installed except for the positions where the upper ends of the plurality of studs 22 are fitted. By doing this for all the gaps between the two protrusions 16 of the steel runner 14, the upper ends of the studs 22 or the damping members 24 are placed in the gaps between the two protrusions 16 over the entire length of the steel runner 14. It is arranged. As a result, the vibration of the two protruding portions 16 can be suppressed over the entire length of the steel runner 14, so that the generation of impact noise can be further suppressed.

Here, referring to FIGS. 3 and 4, the steel runner 14 to which the steel runner damping construction method according to the embodiment of the present invention is applied has a vibration resistance lower than that of the conventional steel runner 14. It can be seen that the duration time is short, that is, the vibration converges early, and the single exposure vibration acceleration level is reduced. From these, it is clear that the duration of the impact noise is shortened and the level of the impact noise is reduced. It can be confirmed that the suppressing effect of

Moreover, the steel runner damping construction method according to the embodiment of the present invention installs the damping member 24 inside the steel runner 14. It can be easily applied to the manufactured runner 14.
The steel runner damping structure 10 according to the embodiment of the present invention can be used in the steel runner damping method according to the embodiment of the present invention. Equivalent effects as described above can be achieved.

10: Steel runner damping structure, 12: Ceiling slab, 14: Steel runner, 16: Protruding part, 18: Connection part, 22: Stud, 24: Damping member

Claims (6)

In reinforced concrete buildings, the control of a steel runner with a U-shaped cross section perpendicular to the extension direction is fixed to the concrete ceiling slab to receive the upper ends of the studs that make up the base of the partition wall. It is a vibration method,
The steel runner includes two projections corresponding to the two legs of the U-shape and a connecting portion connecting between the two projections, and the tips of the two projections are in a downwards manner, the connecting portion is fixed to the ceiling slab at a plurality of fixing points spaced apart in the direction of extension of the steel runner, and between the two projections: The upper ends of the plurality of studs are fitted at intervals in the extending direction of the steel runner,
In the steel runner, in the gap between the two protrusions, at least in the vicinity of each of the plurality of fixing points, in a manner in which both of the at least two protrusions are in close contact with each other, the steel runner expands more thermally than the steel runner. Install a damping member made of a material with a small modulus,
using any one of wood, plastic, rubber, and urethane foam as the material of the damping member,
The damping member is installed on the steel runner except for the positions where the upper ends of the plurality of studs are fitted ,
Steel characterized in that the vibration damping member is fixed to the two protrusions in a shape that fills at least the gap between the two protrusions facing each other in the vicinity of each of the plurality of fixing points. Vibration damping method for manufactured runners. 2. The damping member according to claim 1, wherein said vibration damping member is installed in all gaps between said two projecting portions of said steel runner except for positions where upper ends of said plurality of studs are fitted. Damping method for steel runners. 3. The steel runner according to claim 1, wherein the damping member is installed so as to fill a space surrounded by the two projecting portions and the connecting portion of the steel runner. Damping method. In reinforced concrete buildings, the control of a steel runner with a U-shaped cross section perpendicular to the extension direction is fixed to the concrete ceiling slab to receive the upper ends of the studs that make up the base of the partition wall. a vibrating structure,
The steel runner includes two projections corresponding to the two legs of the U-shape and a connecting portion connecting between the two projections, and the tips of the two projections are in a downwards manner, the connecting portion is fixed to the ceiling slab at a plurality of fixing points spaced apart in the direction of extension of the steel runner, and between the two projections: The upper ends of the plurality of studs are fitted at intervals in the extending direction of the steel runner,
In the steel runner, in the gap between the two protrusions, at least in the vicinity of each of the plurality of fixing points, in a manner in which the steel runner is in close contact with both of the at least two protrusions, the thermal expansion is greater than that of the steel runner. A damping member made of a material with a small modulus is installed,
the material of the damping member is any one of wood, plastic, rubber, and urethane foam;
The damping member is installed on the steel runner except for a position where the upper ends of the plurality of studs are fitted,
The damping member has a shape that fills a gap between at least the two protrusions facing each other in the vicinity of each of the plurality of fixing points, and is fixed to the two protrusions. Vibration damping structure of steel runner characterized by 5. The vibration damping member is installed in all the gaps between the two projecting portions of the steel runner, excluding the positions where the upper ends of the plurality of studs are fitted. Vibration damping structure of the described steel runner. 6. The steel according to claim 4 or 5, wherein the vibration damping member is installed so as to fill a space surrounded by the two projecting portions and the connecting portion of the steel runner. Runner damping structure.

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