JP7298443B2 - Sound insulation floor structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure of a sound insulation floor that improves sound insulation to the lower floors of a building.

In the case of a dry double floor structure such as ALC or precast concrete, it is difficult to ensure sound insulation between the outer edge of the upper floor and the outer edge of the lower floor. On the other hand, when the lower part of the double floor is formed by a wet method such as cast-in-place concrete, the deck plate must be welded to the framework such as beams, and the reinforcing bars must be assembled on site, which requires many processes and labor. It takes.

Patent Literature 1 listed below discloses a deck plate panel used when providing a concrete slab on a floor and a floor structure using this deck plate panel. The deck plate panel of this floor structure has a square deck plate portion and connecting members for fixing the deck plate portion to the beams, and the connecting members are fixed to the beams with bolts and nuts. The shape of the connection member differs depending on the attachment position to the beam.

Japanese Patent No. 5755458

However, in the invention described in Patent Document 1, since the shape of the connection member differs depending on the mounting position of the deck plate panel to the beam, it is necessary to manufacture a plurality of types of connection members having completely different shapes. Moreover, since the connection member is integrally formed, manufacturing the connection member is costly and time-consuming. Further, in the invention described in Patent Document 1, it is not assumed that the connection member is attached to the beam of the deck plate panel at a lower position than the beam. In other words, the bottom surface of the concrete slab using the deck plate panel cannot be positioned below the bottom end of the beam, and the depth of the concrete slab is limited.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and its main object is to provide a sound insulating floor structure that can easily adjust the vertical position of a deck plate with respect to a beam at a low cost. It is in. Another object of the present invention is to provide a sound insulation floor structure in which the deck plate can be arranged below the beams.

A sound insulating floor structure according to the present invention for achieving the above object is a floor structure having a low floor surface that is lower than an adjacent floor surface, and a deck provided so as to span between the lower ends of the adjacent beams. a plate, a connector for connecting the beam and the deck plate, and a floor made of concrete placed on the deck plate, provided along the deck plate and having the low floor surface as an upper surface. , a concrete body having a raised portion extending upward from the outer edge of the floor, and the connector includes a fixed piece fixed to the beam by a fixing member, and a deck plate fixed to the beam. said fixed piece and said piece to be fixed are fixed to each other, and said connector is a parting wall for connecting a parting wall provided on the lower floor of said floor structure to said beam It is characterized by having a connecting piece .

Further, the sound insulating floor structure according to the present invention is characterized by comprising a hanger receiver provided on the beam and having a hanger for hanging the ceiling of the lower floor of the sound insulating floor structure.

Further, in the sound insulation floor structure according to the present invention, the hanger receiver has a plate-like connection piece connected to each of the adjacent beams, and a main body piece provided so as to bridge between the connection pieces. , the plate surfaces of the connection pieces each extend downward from one end connected to the beam toward the other end connected to the body piece, then extend in a direction toward each other, and further downward. It is characterized by being formed to extend .

A sound insulating floor structure according to the present invention is a floor structure having a low floor surface that is lower than an adjacent floor surface, and includes a deck plate provided so as to span between the lower ends of the adjacent beams; a connector for connecting to a deck plate; a floor portion made of concrete placed on the deck plate and provided along the deck plate and having the low floor surface as an upper surface; and an outer edge portion of the floor portion. The connector has a fixed piece fixed to the beam by a fixing member and a fixed piece to which the deck plate is fixed. and a hanging fixture receiver comprising the fixed piece and the fixed piece fixed to each other, provided on the beam, and provided with a hanging fixture for hanging the ceiling of the lower floor of the floor structure, the hanging fixture receiver has a plate-like connection piece connected to each of the adjacent beams, and a body piece provided so as to bridge between the connection pieces, and the plate surfaces of the connection pieces are respectively connected to the beams from one end to the other end connected to the body piece, extend downward, extend in a direction toward each other, and further extend downward.

Further, the sound insulating floor structure according to the present invention is characterized by comprising a reinforcing bar unit built in over the floor portion and the rising portion and having a plurality of reinforcing bars assembled in advance.

Further, in the sound insulation floor structure according to the present invention, the fixing member has a bolt and a nut screwed onto the bolt.

According to the sound insulation floor structure according to the present invention, since the concrete body of the low floor surface which is lower than the floor surface of the adjacent floor has the rising portion, it is possible to reliably secure the sound insulation to the lower floor. . In this sound insulation floor structure, the connector that connects the deck plate and the beam has a fixing piece fixed to the beam and a fixed piece to which the deck plate is fixed. It is a fixed member. Therefore, when adjusting the vertical position of the deck plate with respect to the beam, it is only necessary to use one connector selected from a plurality of types of connectors in which the fixing position of the piece to be fixed relative to the fixing piece is different in the vertical direction. The vertical position can be changed, and the cost for changing the vertical position can be reduced. In addition, by adjusting the fixing position of the piece to be fixed with respect to the fixing piece, the deck plate can be easily arranged below the lower end of the beam , and the connector connects the parting wall provided on the lower floor to the beam. Since the parting wall connection piece is provided, the parting wall can be easily installed.

In addition, according to the sound insulation floor structure of the present invention , since the suspension fixture receiving fixture for suspending the ceiling of the lower floor is provided, the suspended ceiling can be easily installed in the lower floor .

In addition, according to the sound insulation floor structure of the present invention, the sling receiver has connection pieces connected to adjacent beams, and main body pieces bridged between the connection pieces. The plate surfaces of the connection pieces each extend downward from the beam side toward the other end to which the body piece is connected from one end connected to the beam and then approach each other, It is formed to extend further downward. Therefore, between the adjacent beams, both ends of the main body piece on which the hangers are provided are arranged inside the beams. By arranging both ends of the body piece inside the beam, when a boundary wall is provided directly under the beam, the upper end of the boundary wall and the body piece are prevented from coming into contact with each other when vibrating. can be done.

According to the sound insulation floor structure according to the present invention, since the concrete body of the low floor surface which is lower than the floor surface of the adjacent floor has the rising portion, it is possible to reliably secure the sound insulation to the lower floor. . In this sound insulation floor structure, the connector that connects the deck plate and the beam has a fixing piece fixed to the beam and a fixed piece to which the deck plate is fixed. It is a fixed member. Therefore, when adjusting the vertical position of the deck plate with respect to the beam, it is only necessary to use one connector selected from a plurality of types of connectors in which the fixing position of the piece to be fixed relative to the fixing piece is different in the vertical direction. The vertical position can be changed, and the cost for changing the vertical position can be reduced. In addition, by adjusting the fixed position of the piece to be fixed with respect to the fixed piece, the deck plate can be easily arranged below the lower end of the beam, and the hanging device for hanging the ceiling of the lower floor is provided. Since the receiver is provided, a suspended ceiling can be easily installed on the lower floor, and the suspender receiver has a connection piece connected to each adjacent beam and a body piece bridged between the connection pieces. there is The plate surfaces of the connection pieces each extend downward from the beam side toward the other end to which the body piece is connected from one end connected to the beam and then approach each other, It is formed to extend further downward. Therefore, between the adjacent beams, both ends of the main body piece on which the hangers are provided are arranged inside the beams. By arranging both ends of the body piece inside the beam, when a boundary wall is provided directly under the beam, the upper end of the boundary wall and the body piece are prevented from coming into contact with each other when vibrating. can be done.

Further, according to the sound insulation floor structure of the present invention, since the reinforcement unit is formed by assembling a plurality of reinforcements in advance, it is possible to save the trouble of assembling the reinforcements on site when the sound insulation floor is manufactured.

Furthermore, according to the sound insulation floor structure of the present invention, since the fixing members for fixing the connector to the beam are bolts and nuts, the connector can be easily and reliably fixed to the beam.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic longitudinal cross-sectional view which shows one Example of the sound insulation floor structure of this invention. FIG. 2 is a floor plan showing a location to which the sound insulation floor structure of FIG. 1 is applied; FIG. 2 is a schematic enlarged view of part A of FIG. 1; FIG. 2 is an enlarged view of a schematic B portion of FIG. 1; FIG. 2 is a schematic perspective view showing a connector used in the sound insulation floor structure of FIG. 1; FIG. 6 is a schematic perspective view showing the connector of FIG. 5, showing a state seen from a direction different from that of FIG. 5; FIG. 7 is a schematic perspective view showing the connector of FIG. 5, showing a state seen from a direction different from that of FIGS. 5 and 6; FIG. 2 is a schematic perspective view showing a sling receiver used in the sound insulation floor structure of FIG. 1; 1. It is a schematic longitudinal cross-sectional view which shows the state by which another parting wall was installed in the beam in which the deck plate of the sound insulation floor structure of FIG. 1 is provided. Figure 10 is a schematic perspective view showing a fixture connecting another parting wall of Figure 9 to a beam; Figure 11 is an exploded perspective view of the fixture of Figure 10;

Specific examples of the sound insulation floor structure of the present invention will be described in detail below with reference to the drawings.

1 to 4 are views showing an embodiment of the sound insulation floor structure of the present invention, FIG. 1 is a schematic longitudinal sectional view, FIG. 2 is a floor plan, and FIG. 3 is a schematic enlarged view of part A of FIG. 4 is an enlarged schematic view of a portion B in FIG. In the following description, the horizontal direction on the paper surface of FIG. 1 is the front-rear direction (the right side is the front side), the vertical direction on the paper surface of FIG. to the left).

The sound insulation floor structure 1 of this embodiment includes a deck plate 3 provided so as to bridge between the adjacent beams 2, 2, a connector 4 connecting the beam 2 and the deck plate 3, and It is a floor structure having a reinforcing bar unit 5 to be placed, a concrete body 6 provided on the deck plate 3, and a hanger receiver 7 provided on the beam 2, and having a floor surface lower than the adjacent floor surface. In this embodiment, a case where the present invention is applied to the plumbing area of each guest room 8 on the second floor or higher of an accommodation facility such as a hotel will be described.

As shown in FIG. 2, the passenger compartment 8 is formed in a substantially rectangular shape when viewed from the top, with the longitudinal direction being the longitudinal direction. be provided. At the right corner of the front side of the guest room 8, the aforementioned plumbing area is arranged. The water-related area of this embodiment has a washroom 11, a toilet 12, a pipe space 13 and a shower room 14. As shown in FIG. The sound insulation floor structure 1 of this embodiment is applied to the floor of the wet area.

A plurality of deck plates 3 are used in the sound insulation floor structure 1 of the present embodiment. Each deck plate 3 is provided so as to span between the lower ends of the beams 2, 2 adjacent to each other in the front-rear direction. Each of the front and rear beams 2 is made of H-shaped steel having a pair of vertically spaced flanges 15, 15 and a web 16 connecting the pair of flanges 15, 15. are placed. The deck plate 3 has a front end connected to a rear end of a lower flange 15 of the front beam 2 via a connector 4 to be described later, and a rear end of the deck plate 3 connected to a lower flange of the rear beam 2 . 15 through a connector 4 . At this time, the plurality of deck plates 3 are arranged side by side in the left-right direction.

5 to 7 are schematic perspective views showing the connector, showing states viewed from different directions. The connector 4 has a fixed piece 17 to which the deck plate 3 is fixed and a fixed piece 18 to which the beam 2 is fixed. The fixed piece 17 is formed in a plate-like shape with a substantially L-shaped longitudinal section, and has a plate-like piece 19 and a plate-like piece 20 arranged perpendicularly to the piece 19 . . A plurality of circular holes 21 are formed through one piece 19 of the piece 17 to be fixed in the vertical direction. The plurality of circular holes 21 are spaced apart from each other in the left-right direction. The fixing piece 18 has a substantially L-shaped vertical cross section and is formed in a plate shape shorter than the piece 17 to be fixed. and the other piece 23 . A circular hole 24 is formed through one piece 22 of the fixed piece 18 in the vertical direction. In addition, the connector 4 of this embodiment has a plurality of (five in the illustrated example) fixing pieces 18 .

The connector 4 is formed by fixing a fixed piece 18 and a fixed piece 17 to each other. Typically, the other piece 23 of the fixed piece 18 and the other piece 20 of the fixed piece 17 are fixed by welding or the like. When the fixed piece 18 and the fixed piece 17 are fixed, the plurality of fixed pieces 18 are arranged with intervals in the longitudinal direction of the fixed piece 17 . The fixing piece 18 is arranged so that the other piece 23 extends downward from the one piece 22 , and the fixed piece 17 is arranged so that the other piece 20 extends upward from the one piece 19 . At this time, the one piece 22 of the fixing piece 18 and the one piece 19 of the fixed piece 17 are arranged so as to extend in opposite directions. Further, the other piece 23 of the fixing piece 18 is arranged such that its tip portion extends downward from the one piece 19 of the piece 17 to be fixed. In this embodiment, the fixing pieces 18 arranged at both longitudinal ends of the piece 17 to be fixed are formed shorter than the other fixing pieces 18 .

Fixing of the connector 4 to each of the front and rear beams 2 is performed by fixing members 25 . The fixing member 25 of this embodiment has a bolt 26 and a nut 27 screwed onto the bolt 26 . Here, a case where the connector 4 is fixed to the beam 2 on the rear side will be described. As shown in FIG. 3 , the connector 4 has one piece 22 of its fixing piece 18 placed on the front end of the flange 15 on the lower side of the beam 2 . In this state, a bolt 26 is inserted into a circular hole 24 of one piece 22 of the fixing piece 18 and a through hole formed in the flange 15, and a nut 27 is screwed into the bolt 26, thereby fixing the connector 4 to the beam 2. be. At this time, the connector 4 is arranged such that the fixed piece 17 is arranged in front of the fixed piece 18 and the other piece 23 of the fixed piece 18 extends downward from the one piece 22 . On the other hand, the fixing of the connector 4 to the beam 2 on the front side is performed in the same manner as the fixing of the connector 4 to the beam 2 on the rear side. As a result, the connector 4 fixed to the beam 2 on the front side and the connector 4 fixed to the beam 2 on the rear side are arranged such that the fixed pieces 17 correspond to each other.

Fixing of the deck plate 3 to the connector 4 is performed by bolts and nuts, for example. Specifically, the deck plate 3 has a front end portion placed on one piece 19 of the fixed piece 17 of the connecting device 4 on the front side, and a rear end portion of the deck plate 3 on one piece 19 of the fixed piece 17 of the connecting device 4 on the rear side. placed on. In this state, a bolt is inserted into the through hole formed in the front end of the deck plate 3 and the circular hole 21 of the piece 17 to be fixed, and a nut is screwed into the bolt, thereby moving the front end of the deck plate 3 forward. It is fixed to the connector 4 . On the other hand, a bolt is inserted into the through hole formed in the rear end of the deck plate 3 and the circular hole 21 of the fixed piece 17, and a nut is screwed into the bolt, so that the rear end of the deck plate 3 moves rearward. is fixed to the connector 4 of the . Thereby, each deck plate 3 is fixed to the front and rear beams 2 via the connector 4 .

In this embodiment, in addition to the above-described fixing piece 18 and fixed piece 17, the connection fitting 4 fixed to the front beam 2 includes a parting wall 28 provided on the lower floor where the sound insulation floor structure 1 is used. It has a parting wall connection piece 29 that connects to the beam 2 . The boundary wall connection piece 29 is formed in a thin plate shape having a substantially L-shaped vertical cross section and a length shorter than that of the piece 17 to be fixed. It has the other piece 31 of shape. The connector 4 of this embodiment has a plurality (five in the illustrated example) of the partition wall connection pieces 29 . Each of the partition wall connection pieces 29 is fixed to the fixed piece 18 by welding or the like. At this time, the partition wall connection piece 29 is arranged such that the other piece 31 extends in the opposite direction to the one piece 19 of the piece 17 to be fixed so that the tip of the one piece 30 is aligned with the tip of the other piece 23 of the fixed piece 18 . It is fixed to the fixing surface with the piece 17 to be fixed. As a result, the boundary wall connection piece 29 and the fixed piece 18 are arranged in a substantially U-shape. In the illustrated example, since the connector 4 is fixed to the beam 2 on the front side, the partition wall connecting piece 29 is arranged so that the other piece 31 extends forward from the one piece 30 .

The partition wall 28 is fixed to the partition wall connecting piece 29 by screws or the like. The partition wall 28 is the front wall portion of the cabin 8 described above, and has a frame-shaped partition wall frame 33 to which the face member 32 is fixed. The boundary wall 28 is fixed with the upper runner 34 of the boundary wall frame 33 in contact with the lower surface of the other piece 31 of the boundary wall connecting piece 29 . Thereby, the boundary wall 28 is fixed to the beam 2 via the connector 4 .

The reinforcing bar unit 5 is formed by assembling a plurality of reinforcing bars 35 in a predetermined shape in advance, and in this embodiment, the reinforcing bars 35 are assembled to form a bottomed prismatic cage. The reinforcing bar unit 5 in the shape of a square tube with a bottom is placed on the deck plate 3 via a plurality of legs with the bottom part facing downward. A gap is formed between the deck plate 3 and the bottom of the reinforcing bar unit 5 because it is arranged on the deck plate 3 via the legs.

The concrete body 6 is made of concrete placed on the deck plate 3 . The concrete body 6 of this embodiment has a floor portion 36 provided along the deck plate 3 and a raised portion 37 provided extending upward from the outer edge of the floor portion 36, and has an upward opening. It is formed in the shape of a square bottom. The floor portion 36 is arranged below a floor portion 38 adjacent thereto (in this embodiment, the floor portion of the space 39 on the rear side of the bathroom area of the cabin 8). The rising portion 37 is arranged so as to close the gap between the floor portion 36 and the floor portion 38 caused by the floor portion 36 being arranged below the adjacent floor portion 38 . Since the concrete body 6 is formed by placing concrete on the deck plate 3 with the reinforcing bar units 5 arranged on the deck plate 3, the reinforcing bar units 5 are built in over the floor portion 36 and the rising portion 37. be done.

As shown in FIGS. 1 and 3 , a floor member 41 is provided above part of the floor portion 36 of the concrete body 6 via a bundle portion 40 . The floor member 41 has a floor finishing material 42 arranged on the uppermost side and exposed in the cabin 8 . The floor finishing material 42 of the floor member 41 above the concrete body 6 and the floor finishing material 44 of the floor member 43 of the space 39 are formed continuously. Therefore, the floor surface 45 of the plumbing area and the floor surface 46 of the space 39 adjacent thereto are formed flush with each other. Thus, the sound insulation floor structure 1 of this embodiment is a floor structure having a low floor surface 47 which is the upper surface of the floor portion 36 of the concrete body 6 which is lower than the floor surface 46 of the adjacent floor. A floor member 41 is provided on the upper part of 6 via a bundle part 40 to form a double floor.

The hanger receiver 7 is provided with a hanger 48 for hanging the ceiling of the lower floor of the floor where the sound insulation floor structure 1 of this embodiment is used, and is a receiving member for the hanger 48 . FIG. 8 is a schematic perspective view showing a hanger receiver used in the sound insulating floor structure of this embodiment. The sling receiver 7 of this embodiment has a pair of plate-like connection pieces 49, 49 connected to the adjacent beams 2, respectively, and a body piece 50 provided so as to bridge the connection pieces 49, 49. are doing.

Of the pair of front and rear connection pieces 49, 49, the plate surface of the front connection piece 49 extends downward from the upper end toward the lower end, then extends rearward, and further extends downward. there is On the other hand, the plate surface of the rear connection piece 49 extends downward from the upper end to the lower end, then forward, and further downward. In this manner, the pair of front and rear connection pieces 49, 49 are formed in an L-shape and further formed in an L-shape. Upper ends of the pair of front and rear connection pieces 49, 49 are bent rightward, and a circular hole 51 is formed through the bent portion in the vertical direction. A pair of front and rear connection pieces 49, 49 are connected to the beam 2 at a bent portion in which a circular hole 51 is formed, and the lower end portions are connected to each other by a body piece 50 which will be described later. Therefore, the plate surfaces of both connecting pieces 49 extend downward from one end connected to the beam 2 toward the other end connected to the body piece 50, and then extend in a direction approaching each other. It is formed extending downward.

The body piece 50 has a pair of lip channel steels (C-shaped steel) 52 , 52 and a plate member 53 provided on the lip channel steel 52 . A plurality of substantially rectangular plate members 53 are fixed to each of the pair of lip channel steels 52, 52 so as to bridge the lip portion. At this time, the plurality of plate members 53 are arranged at intervals in the longitudinal direction of the lip channel steel 52 . In the body piece 50, both lip channel steels 52 connect the connection pieces 49, 49 to each other. Specifically, the front end of the left lip channel steel 52 and the lower end of the left surface of the front connecting piece 49 are fixed, and the rear end of the left lip channel steel 52 and the rear connecting piece are fixed. The lower end of the left side of 49 is fixed. The front end of the right lip channel steel 52 and the lower end of the right surface of the front connecting piece 49 are fixed, and the rear end of the right lip channel steel 52 and the right surface of the rear connecting piece 49 are fixed. and the lower end of the are fixed. At this time, the openings between the lip portions of both lip channel steels 52, 52 are arranged so as to open in opposite directions.

Fixing of the hanger receiver 7 to the beam 2 is performed by, for example, bolts and nuts. While in contact with the lower surface, bolts are inserted into the through holes formed in the flange 15 and the circular holes 51 of the bent portion, and nuts are screwed into the bolts, thereby fixing the front end portion to the front beam 2. . In addition, the sling receiver 7 is configured such that the bent portion of the rear connection piece 49 is in contact with the lower surface of the flange 15 on the lower side of the rear beam 2, and the through hole formed in the flange 15 and the circular shape of the bent portion. A bolt is inserted into the hole 51 and a nut is screwed into the bolt, thereby fixing the rear end portion to the beam 2 on the rear side. In this manner, the hanger receiver 7 is arranged below the concrete body 6 so as to span the front and rear beams 2,2.

A part of the ceiling material 54 arranged below the concrete body 6 is suspended by a hanger 48, and the hanger 48 is hooked and fixed to the lip channel steel 52 of the body piece 50 of the hanger receiver 7. be. In this embodiment, the ceiling material 54 arranged below the concrete body 6 is arranged below the ceiling material 55 below the space 39 . Accordingly, the ceiling of the guest room 8 on the lower floor of the floor where the sound insulation floor structure 1 is used is formed in a stepped shape, and the ceiling below the sound insulation floor structure 1 is a suspended ceiling. As shown in FIG. 1, the sound insulation floor structure 1 of this embodiment is applied to the floor of the space below the suspended ceiling. That is, the plumbing area of the upper cabin 8 and the plumbing area of the lower cabin 8 are arranged in correspondence with each other in the vertical direction.

By the way, in the present embodiment, the connector 4 is used to connect the partition wall 28 to the beam 2, but it is not limited to this. FIG. 9 is a schematic vertical cross-sectional view showing a state in which another parting wall is installed on the beam on which the deck plate of the sound insulation floor structure of this embodiment is installed. 10 and 11 are diagrams showing a fixture for connecting another boundary wall to the beam, FIG. 10 being a schematic perspective view and FIG. 11 being a schematic exploded perspective view.

In the sound insulation floor structure 1 of this embodiment, the partition wall 57 may be connected to the beam 2 via the fixture 56 . The mounting fixture 56 has a substantially U-shaped plate-like mounting body piece 58 and a substantially U-shaped thin plate-like covering piece 59 provided on the mounting body piece 58 . The mounting body piece 58 has a substantially U-shape opening upward, and the upper ends of the open ends are formed in a substantially L-shape to form a hooking portion 60 to the beam 2 . Through holes 61 are formed at both open end portions of the mounting body piece 58 . The bottom of the mounting body piece 58 is open except for both front and rear ends, and the opening 62 is continuous with the opening 63 formed at the lower end of each open end. The covering piece 59 has a substantially U-shape opening upward, and through holes 64 are formed at both open ends. The covering piece 59 and the mounting body piece 58 are fixed to each other by fitting the covering piece 59 so as to cover the lower portion of the mounting body piece 58, and in this state, rivets 68 are provided through the through holes 61 and 64 and crimped. be.

The fixture 56 is attached to the beam 2 by hooking it on the lower flange 15 of the beam 2 . At this time, the fixture 56 is hooked on the tip of the flange 15 and arranged along the direction perpendicular to the length direction of the beam 2 on which the plate surfaces of the open ends are hooked. The fixture 56 and the boundary wall 57 are fixed by screws or the like. The boundary wall 57 is fixed with the upper runner 66 of the boundary wall frame 65 in contact with the lower surface of the covering piece 59 of the fixture 56 . The other parting wall frame 67 of the parting wall 57 is fixed to the beam 2 via the connector 4 as described above. At this time, the connector 4 is fixed to the tip of the flange 15 opposite to the tip of the flange 15 on which the fixture 56 is hooked.

Next, a construction method for the sound insulation floor structure 1 of this embodiment will be described. The sound insulation floor structure 1 of this embodiment is applied to a part of the floor. Therefore, an opening is formed in a part of the floor, and the sound insulation floor structure 1 of this embodiment is constructed in the opening.

When performing construction, first, the connector 4 is fixed to the front and rear beams 2, 2 by the fixing members 25, and the connector 4 in which the circular hole 21 of the fixed piece 17 is not formed is attached to the left and right beams. fixed by A plurality of deck plates 3 are arranged side by side so as to close the opening formed in the floor. Each deck plate 3 has its front end fixed to the front connector 4 with bolts and nuts, and its rear end fixed to the rear connector 4 with bolts and nuts. After the deck plate 3 is arranged, the reinforcement unit 5 is placed on the deck plate 3 . The reinforcing bar unit 5 is assembled with a plurality of reinforcing bars 35 in a substantially rectangular box-shaped frame that is opened upward in advance. 3 is placed on.

Concrete is placed in a state where the reinforcing bar unit 5 is placed on the deck plate 3 to form a substantially rectangular box-shaped concrete body 6 with an upward opening. Since the reinforcement unit 5 is formed in a substantially rectangular box shape as described above, the reinforcement unit 5 is built in the floor portion 36 and the rising portion 37 of the concrete body 6 . In this embodiment, among the forms used for pouring concrete, the formwork used for the portion corresponding to the rising portion 37 of the concrete body 6 is the building to which the sound insulation floor structure 1 of this embodiment is applied. The formwork that was used when the foundation was placed is used.

One or more through-holes are formed in the deck plate 3 installed at a location corresponding to the pipe space 13 among the plurality of deck plates 3 . A cylindrical void pipe fixed to the reinforcing bar unit 5 arranged on the deck plate 3 is passed through the through hole, and concrete is poured in this state as described above. As a result, a pipe insertion hole through which a pipe such as a water supply/drainage pipe is passed is formed vertically through the portion of the concrete body 6 corresponding to the pipe space 13 .

The hanger receiver 7 provided below the concrete body 6 is fixed to the front and rear beams 2 before the concrete body 6 is formed, as described above. After the concrete body 6 is formed, a floor member 41 is provided on the floor portion 36 of the concrete body 6 via the bundle portion 40 . In this embodiment, since the floor finishing materials 42 and 44 are continuous between the bathroom area and other areas, the floor finishing materials 42 and 44 are installed over the entire floor of the guest room 8 . Moreover, the boundary wall 28 is fixed to the beam 2 via the connector 4 after fixing the connector 4 to the beam 2 . At this time, depending on the boundary wall, the fixture 56 is used together with the connector 4 as described above.

In the case of the sound insulation floor structure 1 of the present embodiment, the upper surface of the floor portion 36 of the concrete body 6 provided in the water area is a low floor surface 47 lower than the floor surface 46 of the space 39, and the concrete body 6 A floor member 41 is provided above via the bundle portion 40 . Therefore, piping can be installed in the space between the concrete body 6 and the floor member 41 . Usually, it is a double floor structure with an upper floor and a lower floor, and when pipes are passed between the upper floor and the lower floor, the sound of using the toilet or taking a bath on the upper floor will be heard in the lower floor room. There is a possibility that it will resonate, and consideration is required at hotels where bathing is expected late at night. Therefore, conventionally, the lower floor part was formed of ALC, but in this case, the lower floor part made of ALC is arranged at a position lower than the adjacent floor part adjacent to the double floor, and is adjacent to the lower floor part. A gap is formed in the stepped portion between the floor (the side surface of the space between the upper floor and the lower floor of the double floor), and the sound insulation performance is greatly reduced.

On the other hand, in the sound insulation floor structure 1 of this embodiment, the concrete body 6 has the floor portion 36 and the rising portion 37 . Accordingly, since the floor portion 36 corresponding to the lower floor portion of the double floor is made of concrete and the gap is closed by the raised portion 37 made of concrete, sound insulation can be improved. Further, in the case of the sound insulation floor structure 1 of this embodiment, the deck plate 3 and the beam 2 are connected via the connector 4 in which the fixed piece 18 and the fixed piece 17 are fixed to each other. Therefore, it is possible to connect the deck plate 3 to the beam 2 by using a connector 4 selected from a plurality of connectors 4 in which the fixing positions of the fixed piece 18 and the fixed piece 17 are vertically different. Thereby, the vertical position of the deck plate 3 with respect to the beam 2 can be easily adjusted. Further, in the case of the sound insulation floor structure 1 of the present embodiment, the connector 4 is fixed with the substantially L-shaped fixing piece 18 and the substantially L-shaped fixed piece 17 upside down. Therefore, the fixing portion (one piece 19) of the deck plate 3 can be arranged below the fixing portion (one piece 22) of the connecting device 4 to the beam 2, and the deck plate 3 can be easily arranged below the beam 2. can do.

In addition, in the case of the sound insulation floor structure 1 of the present embodiment, since the connector 4 has the parting wall connection piece 29, the parting wall 28 can be easily fixed to the beams 2. FIG. Further, in the case of the sound insulation floor structure 1 of this embodiment, since the hanger receiver 7 is provided below the concrete body 6, there is no need to provide the hanger 48 in the hole formed in the concrete body 6, and the conventional hanger can be used. can be used to suspend the ceiling. Moreover, the hanger receiver 7 has a pair of connection pieces 49, 49 and a body piece 50 provided so as to bridge the lower end portions between the connection pieces 49, 49, and the plate surfaces of the connection pieces 49 are respectively , extending downward from the side of the beam 2 toward the lower end to which the main body piece 50 is connected, from the upper end to which the beam 2 is connected, extend in a direction toward each other, and further extend downward. there is Therefore, the lower end of the hanger receiver 7 can be recessed inward, and the parting wall can be installed at a position closer to the beam 2 directly below the beam 2 . In this case, a gap is formed between the upper end of the parting wall and the sling receiver 7 to suppress contact between the parting wall and the sling receiver 7 when vibrating. can be made less likely to occur.

Moreover, in the case of the sound insulation floor structure 1 of the present embodiment, the reinforcing bar unit 5 is formed by assembling a plurality of reinforcing bars 35 in a predetermined shape in advance. Therefore, there is no need to assemble the reinforcing bars on site, and labor for construction can be reduced. In particular, in lodging facilities such as hotels, it is often the case that the guest rooms 8 have the same size of the plumbing area, so it is sufficient to prepare a plurality of identical reinforcing bar units 5 . Furthermore, in the case of the sound insulation floor structure 1 of this embodiment, the fixing member 25 for fixing the connector 4 to the beam 2 has a bolt 26 and a nut 27 screwed thereon. Therefore, it can be easily fixed as compared with the case of fixing by welding.

The sound insulation floor structure of the present invention is not limited to the configuration of the above-described embodiment, and can be modified as appropriate. For example, in the above embodiment, the front connecting device 4 is provided with the boundary wall connecting piece 29, and the rear connecting device 4 is not provided with the boundary wall connecting piece 29, but it is not limited to this. The presence or absence of the partition wall connecting piece 29 can be appropriately changed depending on the structure of the lower floor. Furthermore, in the above-described embodiment, the present invention was applied to the water-related areas of lodging facilities such as hotels, but it may also be applied to living rooms and common halls where it is desired to increase the ceiling height, for example.

The sound insulation floor structure of the present invention is suitably applied to a sound insulation floor having a double floor structure.

REFERENCE SIGNS LIST 1 sound insulation floor structure 2 beam 3 deck plate 4 connector 5 reinforcing bar unit 6 concrete body 7 sling receiver 17 fixed piece 18 fixed piece 25 fixed member 26 bolt 27 nut 28 parting wall 29 parting wall connecting piece 35 reinforcing bar 36 floor 37 Standing portion 46 Floor surface 47 Low floor surface 48 Hanging tool 49 Connection piece 50 Body piece

Claims (6)

A floor structure having a low floor level that is lower than an adjacent floor level,
a deck plate provided so as to bridge between the lower ends of adjacent beams;
a connector that connects the beam and the deck plate;
A floor portion made of concrete placed on the deck plate and provided along the deck plate with the low floor surface as an upper surface, and a rising portion provided to extend upward from the outer edge of the floor and a concrete body having
The connector has a fixed piece fixed to the beam by a fixing member and a fixed piece to which the deck plate is fixed, the fixed piece and the fixed piece being fixed to each other,
The connector has a parting wall connecting piece that connects a parting wall provided on the lower floor of the floor structure to the beam.
A sound insulation floor structure characterized by: 2. The sound insulating floor structure according to claim 1, further comprising hanger receivers provided on said beams and provided with hangers for hanging the ceiling of the lower floor of said sound insulating floor structure . The hanger receiver has a plate-shaped connection piece connected to each of the adjacent beams, and a main body piece provided so as to bridge between the connection pieces,
The plate surfaces of the connection pieces each extend downward from one end connected to the beam toward the other end connected to the main body piece, extend in a direction toward each other, and further extend downward. 3. The sound insulation floor structure according to claim 2 , wherein the sound insulation floor structure is protruded . A floor structure having a low floor level that is lower than an adjacent floor level,
a deck plate provided so as to bridge between the lower ends of adjacent beams;
a connector that connects the beam and the deck plate;
A floor portion made of concrete placed on the deck plate and provided along the deck plate with the low floor surface as an upper surface, and a rising portion provided to extend upward from the outer edge of the floor and a concrete body having
The connector has a fixed piece fixed to the beam by a fixing member and a fixed piece to which the deck plate is fixed, the fixed piece and the fixed piece being fixed to each other,
A hanging fixture receiver provided on the beam and provided with a hanging fixture for hanging the ceiling of the lower floor of the floor structure,
The hanger receiver has a plate-shaped connection piece connected to each of the adjacent beams, and a main body piece provided so as to bridge between the connection pieces,
The plate surfaces of the connection pieces each extend downward from one end connected to the beam toward the other end connected to the main body piece, extend in a direction toward each other, and further extend downward. A sound insulation floor structure characterized in that it is protruded and formed. The sound insulating floor structure according to any one of claims 1 to 4, further comprising a reinforcing bar unit built in over the floor portion and the rising portion and having a plurality of reinforcing bars assembled in advance. The sound insulating floor structure according to any one of claims 1 to 5, wherein the fixing member has a bolt and a nut screwed onto the bolt.

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