JP7257791B2 - Building insulation structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heat insulating structure in a unit-type multi-story building.

2. Description of the Related Art In a building such as a house, a structure in which a heat insulating material is provided along an outer peripheral portion surrounding the entire building is known as a heat insulating structure. Specifically, for example, in a two-story building, insulating materials are provided on the floor of the first floor, the ceiling of the second floor, and the outer walls of the first and second floors, and the entire building is covered by the insulating material. A surrounding configuration is known. As a heat insulating structure of a building, a structure in which heat insulating material is provided along the inner peripheral surface of the foundation (foundation heat insulating structure) is known in addition to a structure in which heat insulating material is provided along the floor surface material (floor heat insulating structure). there is In addition to the structure in which the heat insulating material is provided along the ceiling surface material (ceiling heat insulating structure), a structure in which the heat insulating material is provided along the roof surface material (roof heat insulating structure) is known.

Also, as a building, a multi-story unit building constructed by combining a plurality of building units is generally known, and the technology described in Patent Document 1, for example, is known as an insulation structure for the unit building. ing. In Patent Document 1, in a multi-story unit building in which an inter-floor space is provided between an upper-floor space and a lower-floor space, the inter-floor space includes a ceiling panel material for the lower floor and a floor for the upper floor. A configuration is described in which a heat insulating layer is provided along each face material, and each of these heat insulating layers has a first heat insulating portion and a second heat insulating portion having lower heat insulating performance than the first heat insulating portion. It is For example, in each of these heat insulating layers, a heat insulating material having lower heat insulating performance is used toward the inner side of the building. With this technique, it is possible to reduce the cost of the heat insulating layers of the ceiling and floor.

JP 2013-133641 A

However, in the technique described in Patent Document 1, the heat insulating performance of the heat insulating layer provided along the ceiling surface material and the floor surface material in the inter-story part differs in the in-plane direction of the ceiling surface material and the floor surface material. Therefore, there is concern that locally low-temperature areas may occur in the ceiling and floor materials. Specifically, in a unit-type building, the part including the ceiling girders of the building unit on the lower floor side and the floor girders of the building unit on the upper floor side is the inter-floor section, and the inter-floor section has a hollow space. An inter-floor space is formed. Therefore, for example, when low-temperature outside air flows into the inter-floor space at low temperatures such as in winter, the cold air in the inter-floor space may locally produce a low-temperature area even near the center of the building.

In addition, a multi-story building is generally provided with a staircase that enables movement between an upper floor space and a lower floor space, and the staircase is provided in an opening formed between floors. In this case, if the opening is surrounded by the inter-floor space, it is conceivable that the temperature may become locally low temperature.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to realize suitable heat insulation in a multi-story unit building.

Means effective for solving the above problems will be described below, showing their actions, effects, etc. as necessary.

Means 1. a building unit (building unit 20) comprising a plurality of columns (columns 21) and ceiling girders (ceiling girders 22) and floor girders (floor girders 23) connected to the columns; A heat insulating structure that is applied to a unit type building (building 10) constructed with multiple floors by combining building units, and insulates the building along the outer peripheral portion surrounding the entire building,
Among the vertically arranged building units, the ceiling girders of the lower floor unit (lower floor unit 20A) on the lower floor (first floor portion 14) side and the upper floor unit (upper floor unit 20B) on the upper floor (second floor portion 15) side An opening (opening 17) that communicates between the lower floor space and the upper floor space is provided in the inter-floor portion (inter-floor portion 16), which is a range including the floor girders,
In the inter-floor portion, a ceiling insulation layer (inter-floor ceiling insulation layer 34) is provided along the upper surface side of the ceiling surface material (ceiling surface material 27) of the lower floor unit. A floor insulation layer (interfloor insulation layer 35) is provided along the floor surface material (floor surface material 28) of the floor unit on the lower surface side of the floor surface material. A heat insulating structure of a building, in which a connecting heat insulating layer (connecting heat insulating layer 36) connecting the ceiling heat insulating layer and the floor heat insulating layer is provided in the (opening surrounding portion 18).

Each building unit has floor girders and ceiling girders, so in a unit-type multi-story building consisting of multiple building units, An inter-floor section is formed in a range including the ceiling girders of the lower floor unit and the floor girders of the upper floor unit. In this case, when the temperature is low, such as in winter, there is a concern that the temperature in the inter-floor area may become low, causing local cooling even in the area near the center of the building. In addition, there is a concern that the coldness may be transmitted to the opening provided in the inter-floor section.

In this regard, in the present invention, in the inter-floor section, a ceiling insulation layer is provided along the ceiling surface material of the lower floor unit, and the floor insulation layer is provided along the floor surface material of the upper floor unit. A layer is provided, and a connecting heat insulating layer that connects the ceiling heat insulating layer and the floor heat insulating layer is provided around the opening, so it is possible to suppress local coldness in the inter-floor area. . As a result, suitable heat insulation can be realized in a multi-story unit building.

Means 2. On the lower floor unit side, the ceiling insulation layer is provided in a direction along the ceiling surface material through a portion between the ceiling girders of the lower floor unit and the floor girders of the upper floor unit,
Means 1 in which the floor insulation layer is provided on the upper floor unit side in a direction along the floor surface material through a portion between the floor girders of the upper floor unit and the floor surface material above it. insulation structure of the building described in .

In the above configuration, on the lower floor unit side, the ceiling insulation layer is provided in the direction along the ceiling surface material through the portion between the ceiling girders of the lower floor unit and the floor girders of the upper floor unit. It is possible to suppress the cooling of the lower floor space near the large beam. In addition, on the upper floor unit side, the floor insulation layer is provided in the direction along the floor material through the part between the floor girders and the floor materials of the upper floor unit, so that the upper floor near the floor girders Cooling of the space can be suppressed.

Means 3. The ceiling heat insulating layer has a ceiling heat insulating material (ceiling heat insulating material 42) laid on the ceiling surface material of the lower floor unit, and a surplus portion (surplus portion 42a) of the ceiling heat insulating material is used as the space between floors. The heat insulating structure for a building according to means 1 or 2, wherein the connecting heat insulating layer is configured by extending in the vertical direction along the periphery of the opening in the section.

In the above configuration, the surplus portion of the ceiling heat insulating material used as the ceiling heat insulating layer constitutes the connecting heat insulating layer around the opening, and the work involved in providing appropriate heat insulating performance and providing the connecting heat insulating layer in the opening surrounding area. and can be realized.

Means 4. The ceiling heat insulating layer has a ceiling heat insulating material (ceiling heat insulating material 42) disposed on the ceiling surface material of the lower floor unit,
The floor insulation layer has a floor insulation material (floor insulation material 46) disposed under the floor surface material of the upper floor unit,
One of the ceiling heat insulating material and the floor heat insulating material is configured to be easier to deform than the other, and the surplus portion (for example, the surplus portion 42a) of this one heat insulating material is used as the opening in the inter-floor section. The heat insulating structure of a building according to means 1 or 2, wherein the connecting heat insulating layer is configured by extending vertically along the peripheral portion.

In the above configuration, the surplus portion of one of the ceiling heat insulating material and the floor heat insulating material, which is relatively easily deformable, constitutes the connecting heat insulating layer around the opening. It is possible to improve the workability when providing the heat insulating layer.

Means 5. In the insulating material that constitutes the connecting insulating layer with the surplus part, the part of the insulating material that passes between the floor girders of the upper floor unit and the ceiling girders of the lower floor unit is crushed. The heat insulating structure of the building according to means 3 or 4, characterized in that the heat insulating structure abuts on the floor girders and the ceiling girders so as to be in a folded state.

When the connecting heat insulating layer is formed by using the surplus part of the floor heat insulating material or the ceiling heat insulating material as shown in means 4 and 5, the influence of the misalignment of the heat insulating material may affect the heat insulating performance of the connecting heat insulating layer. have a nature. Here, as shown in this means, the insulating material abuts on both girders so that the portion passing between the girders of the units on the upper and lower floors is in a crushed state (compressed state). With this configuration, it is possible to suppress positional deviation of the heat insulating material by the upper and lower large beams. As a result, the occurrence of the above inconvenience can be suitably suppressed.

Means 6. An outer wall heat insulating layer (outer wall heat insulating layer 31) is provided on the outer wall of the building,
The heat insulating structure of a building according to any one of means 1 to 5, wherein the floor heat insulating layer and the ceiling heat insulating layer have higher heat insulating performance than the outer wall heat insulating layer.

In this case, the floor insulation layer and the ceiling insulation layer have higher insulation performance (in other words, for example, a lower heat transmission coefficient) than the outer wall insulation layer, so that the insulation performance of the entire building is preferably improved. can be improved.

Means 7. The upper floor unit includes a plurality of floor girders (floor girders 26) bridged between the floor girders facing each other, and vibration dampers (controllers) for absorbing vibration energy applied to the floor girders. a vibration damper 61),
The vibration damper has a bracket (bracket 62) fixed to the floor beam, and a vibration damping member (vibration damping member 63) supported by the bracket and arranged horizontally with the floor beam. and
A joist (joist 45) that supports the floor material and serves as a part of the floor insulation layer is provided on the upper surface side of the floor beam, and the vibration control damper is fixed on the lower surface side of the floor joist. A heat insulating structure for a building according to any one of means 1 to 6.

A technique is known in which a vibration control damper is provided on the floor beam of the upper floor unit in order to eliminate the influence of sound and vibration from the upper floor space to the lower floor space. Considering how the vibration damper fits under the floor material (i.e., in the inter-floor area), the vibration damping member (weight, etc.) supported by the bracket should be placed in line with the floor joists. is desirable. In this case, in the configuration in which the floor insulation layer is provided on the lower surface side of the floor surface material of the upper floor unit as described above, it is conceivable that the vibration damping member of the vibration damper and the floor insulation material interfere with each other.

In this respect, in the above configuration, in the floor beams of the upper floor unit, joists are provided on the upper surface side of the floor joist to support the floor surface material and serve as a part of the floor insulation layer, and the vibration control damper is fixed on the lower surface side. Interference between the damping member and the floor heat insulating material can be suppressed by arranging the damping damper away from the floor surface material while enhancing the heat insulation of the floor of the upper floor unit.

The front view which shows the outline of a building. The front view which shows the heat insulation layer of a building. FIG. 4 is a vertical cross-sectional view showing a heat insulating structure in an inter-story section; FIG. 4 is a longitudinal sectional view showing the heat insulating structure around the opening; The figure which shows the floor insulation structure around a damping damper. The perspective view which shows the outline of a unit-type building. The perspective view which shows a building unit.

EMBODIMENT OF THE INVENTION Below, it demonstrates, referring drawings for one Embodiment which actualized this invention. The building of this embodiment is a multi-story unit building constructed by combining a plurality of building units. FIG. 6 is a perspective view showing the outline of the unit type building, and FIG. 7 is a perspective view showing the building unit.

As shown in FIG. 6 , a building 10 such as a house includes a building body 12 provided on a foundation 11 and a roof 13 provided on the building body 12 . The building 10 is two stories and has a first floor portion 14 and a second floor portion 15. - 特許庁The building body 12 is configured by connecting a plurality of building units 20 to each other. In the first floor portion 14 and the second floor portion 15, the building units 20 are arranged vertically. Also referred to as floor unit 20B.

As shown in FIG. 7, the building unit 20 includes four pillars 21 arranged at its four corners, and four ceiling girders 22 and four floor girders 23 connecting the upper end and lower end of each pillar 21, respectively. and The pillars 21, the ceiling girders 22 and the floor girders 23 form a rectangular parallelepiped skeleton (frame). The pillar 21 is made of rectangular steel in the shape of a square cylinder, and the ceiling girders 22 and the floor girders 23 are made of channel steel with a U-shaped cross section.

A plurality of ceiling girders 25 are bridged at predetermined intervals between the opposing ceiling girders 22 on the long sides of the building unit 20 . Similarly, a plurality of small floor beams 26 are bridged at predetermined intervals between the facing floor girders 23 on the long sides of the building unit 20 . The ceiling girders 25 and the floor girders 26 are provided at equal intervals and vertically corresponding positions. For example, the ceiling girders 25 are made of lip channel steel and the floor girders 26 are made of square steel. A ceiling panel member 27 is supported by the ceiling girders 25 , and a floor panel member 28 is supported by the floor girders 26 .

FIG. 1 is a front view showing an outline of a building 10, and FIG.

In FIG. 1, the range including the ceiling girders 22 of the lower floor unit 20A and the floor girders 23 of the upper floor unit 20B is the inter-floor section 16. As shown in FIG. The inter-floor section 16 is provided between the lower floor space S1, which is the indoor space of the first floor portion 14, and the upper floor space S2, which is the indoor space of the second floor portion 15. A space in the inter-floor section 16 is an inter-floor space described later. The inter-floor section 16 is provided with an opening 17 that communicates the lower floor space S1 and the upper floor space S2. The opening 17 is, for example, a stairway opening provided with a staircase or a stairwell opening provided with an atrium. Note that SL in the drawing is a stacking line indicating the boundary between the first floor portion 14 and the second floor portion 15 in the vertical direction.

The building 10 of this embodiment has a heat insulating structure that insulates the building 10 along the outer periphery surrounding the entire building, and FIG. 2 shows the heat insulating layer in the building outer periphery. In the present embodiment, an underfloor heat insulation structure that insulates the lower surface side of the floor surface material 28 of the lower floor unit 20A is used as the heat insulation structure for the floor on the lowest floor of the building 10, and the heat insulation structure for the ceiling on the top floor of the building 10. As such, a ceiling insulation structure is used to insulate the upper surface side of the ceiling panel 27 of the upper floor unit 20B.

As a heat insulating basic structure of the building 10 , an outer wall heat insulating layer 31 is provided on the outer wall portion of each floor of the building 10 . A lowermost floor insulation layer 32 is provided on the floor of the first floor portion 14 of the building 10 . In addition, a top floor ceiling insulation layer 33 is provided on the ceiling of the second floor portion 15 (top floor) of the building 10 . Each of these heat insulating layers 31 to 33 is, so to speak, an outer heat insulating layer for insulating the outer periphery of the building.

Since the basic heat insulation structure is well known, to briefly explain the configuration, an exterior wall panel having an exterior wall frame and an exterior wall panel is fixed to the exterior wall of the building 10, and the inside of the exterior wall frame (that is, the indoor side) ) is provided with an in-wall heat insulating material made of glass wool or the like. The outer wall heat insulating layer 31 is composed of the inner wall heat insulating layer. In addition, on the lowest floor of the building 10, an underfloor heat insulating material is provided along the floor surface material 28 of the lower floor unit 20A, and the underfloor heat insulating material constitutes the lowest floor heat insulating layer 32. there is Furthermore, in the ceiling of the top floor of the building 10, a ceiling heat insulating material is provided along the ceiling surface material 27 of the upper unit 20B, and the top floor ceiling heat insulating layer 33 is constituted by the ceiling heat insulating material. there is

By the way, in the building 10, the floor girders 23 and the ceiling girders 22 extend horizontally from the vicinity of the outer wall toward the inside of the building. It is conceivable that the cold air in S3 may cause a localized low temperature area even near the center of the building 10 . Moreover, if the opening 17 for forming a staircase or the like is surrounded by the inter-floor space S3, it is also conceivable that the temperature becomes a local low-temperature area.

Therefore, in this embodiment, in addition to the above-described heat insulating layers 31 to 33 (peripheral heat insulating layer) on the outer periphery of the building, an inter-floor heat insulating layer is provided in order to suppress local coldness in the inter-floor section 16 of the building 10. It is configured. In this case, as shown in FIG. 2, the inter-story section 16 includes an inter-story ceiling insulation layer 34, an inter-floor insulation layer 35, and a connecting insulation that connects the inter-story ceiling insulation layer 34 and the inter-floor insulation layer 35. A layer 36 is provided. Hereinafter, the basic structure and heat insulating structure of the inter-story section 16 will be described in detail with reference to FIG. FIG. 3 is a vertical cross-sectional view of the inter-floor section 16, corresponding to the cross-sectional view taken along the line AA in FIG.

In the lower floor unit 20A, a ceiling surface material 27 made of gypsum board or the like is fixed to the lower surfaces of the ceiling girders 22 and the ceiling small girders 25 via joists 41 as a ceiling base material. The joists 41 are long members extending along the ceiling girders 22 and the ceiling girders 25 .

In the upper floor unit 20B, a floor surface member 28 is fixed to the upper surfaces of the floor girders 23 and the floor small girders 26 via joists 45 as underfloor members. The floor joists 45 are long members made of wooden squares and extending along the floor girders 23 and the floor small girders 26 . The upper surface of the floor girders 23 and the upper surface of the floor small girders 26 are configured to be at the same height position. 28 is fixed. The floor surface material 28 includes, for example, a floor finishing surface material made of flooring material, etc., and an underfloor material made of plywood, particle board, etc. provided on the lower side thereof.

In the space (inter-floor space S3) formed between the ceiling surface material 27 of the lower floor unit 20A and the floor surface material 28 of the upper floor unit 20B in the inter-story part 16, on the upper surface of the ceiling surface material 27 A ceiling heat insulating material 42 is provided along the line. The ceiling heat insulating material 42 is made of a fiber-based heat insulating material such as glass wool, and is provided so as to cover the ceiling girders 25 from above. In addition, the ceiling heat insulating material 42 enters between the ceiling girders 22 of the lower floor unit 20A and the floor girders 23 of the upper floor unit 20B (inter-beam gap) in a crushed state, and is arranged in each lower floor unit in the horizontal direction. In 20A, it is provided so as to cover the adjacent ceiling girders 22 from above. In this case, the ceiling heat insulating material 42 is provided so as to straddle the lower floor units 20A arranged in the horizontal direction. Between the ceiling girders 22 (between the webs of the ceiling girders 22) of the lower floor units 20A arranged in the horizontal direction, part of the ceiling heat insulating material 42 enters in an expanded state, and the inter-beam heat insulating material 43 is filled. there is In this embodiment, the ceiling heat insulating layer is formed by the ceiling heat insulating material 42 .

A floor heat insulating material 46 is provided along the lower surface of the floor surface material 28 in the inter-floor space S3. The floor heat insulators 46 are made of plate-shaped heat insulators, and are fixed at positions between the adjacent joists 45 on the lower surface side of the floor surface material 28 . The floor heat insulating material 46 is provided not only between the joists 45 in the same building unit 20 but also between the joists 45 on the adjacent floor girders 23 in each horizontally arranged upper floor unit 20B. That is, the floor surface material 28a (floor joint material) of the unit connection portion is fixed to the joists 45 on the adjacent floor girders 23, and the lower surface of the floor surface material 28a also has the same structure as the lower surface of the floor surface material 28. A floor insulation material 46 is fixed to. In short, the floor joists 45 and the floor insulating materials 46 are arranged alternately on the lower surface side of the floor materials 28, 28a.

In this case, since the joists 45 made of wood have a higher heat insulating performance than the metal floor beams 26, the floor joists 45 are interposed between the floor beams 26 and the floor members 28, 28a. Even if the small beam 26 is cold, the transmission of the cold is cut off. In this embodiment, the floor heat insulating material 46 forms a floor heat insulating layer.

As shown in the figure, the inter-floor space S3 is provided with a small beam heat insulating material 47 so as to surround the small floor beam 26, which suppresses the coldness of the inter-floor space S3 from being transmitted to the small floor beam 26. there is As with the small beam heat insulating material 47, a floor large beam heat insulating material may be provided in the inter-floor space S3 so as to surround the floor girder 23. - 特許庁

The heat insulating material forming the inter-floor heat insulating layer 34 and the inter-floor heat insulating layer 35 has a lower heat transmission coefficient than the heat insulating material forming the outer wall heat insulating layer 31 . As a result, the heat insulation performance of the entire building can be favorably improved. It should be noted that the floor surface is a portion that is more likely to be touched by residents than the wall surface. Therefore, among the heat insulation layers, lowering the heat transmission coefficient of the interfloor heat insulation layer 35 has the advantage of making it easier for residents to enjoy the effects of improved heat insulation performance.

Next, referring to FIG. 4, the heat insulation structure around the opening 17 will be described. FIG. 4 is a longitudinal sectional view of the inter-floor section 16 showing the opening 17 and its surroundings.

In the opening 17, a partition screen material 51 is fixed to the ceiling beam 25 and the floor beam 26, and the partition screen material 51 partitions the inter-floor space S3 in the horizontal direction. The connecting heat insulating layer 36 connecting the inter-floor ceiling heat insulating layer 34 and the inter-floor heat insulating layer 35 is provided in the opening peripheral portion 18 around the opening 17 in the inter-floor space S3. Note that the partition screen material 51 may be fixed to the ceiling girders 22 and the floor girders 23 .

In this embodiment, the connecting heat insulating layer 36 is constructed using a part of the ceiling heat insulating material 42 that constitutes the inter-story ceiling heat insulating layer 34 . Specifically, the ceiling heat insulating material 42 is formed so that its width (horizontal size in FIG. 4) is larger than the width of the inter-floor space S3 excluding the opening 17, and the ceiling heat insulating material 42 is arranged at a predetermined installation position, that is, arranged (laid) along the ceiling surface material 27 with reference to the outer wall side (for example, a large beam on the outer wall side), the ceiling heat insulating material 42 It is configured such that a portion on the side of the opening peripheral portion 18 is redundant.

The ceiling heat insulating material 42 is arranged so that the surplus portion (hereinafter referred to as surplus portion 42a) extends vertically along the partition screen material 51 and is bent at about 90 degrees. In this state, the surplus portion 42a overlaps the division screen member 51 and its attachment target (small beams 25, 26). The tip portion of the surplus portion 42a abuts on the lower surface of the floor insulation material 46 in a slightly crushed state, thereby suppressing the formation of a gap between the inter-floor insulation layer 35 and the connecting insulation layer 36. . As a result, the inter-floor ceiling heat insulation layer 34 and the inter-floor heat insulation layer 35 are connected through the connection heat insulation layer 36 without gaps in the opening peripheral portion 18 .

Although the surplus portion 42a overlaps the installation target (the small beams 25 and 26) and the floor insulating material 46 in the bent state described above, It has a non-fixed, more specifically a free end. When forming the connecting heat insulating layer 36 at the construction site, the ceiling heat insulating material 42 is bent so that the end on the surplus portion 42a side protrudes upward from the floor line or the like, and then the floor material 28 is bent. and the floor heat insulating material 46 are installed from above so as to rest on the end. As a result, the ends of the ceiling heat insulating material 42 are crushed by the floor heat insulating material 46, and the inter-floor heat insulating layer 35 and the connecting heat insulating layer 36 are connected. Therefore, the inter-floor heat insulation layer 35 and the connecting heat insulation layer 36 can be easily connected even in the inter-floor space S3 which is difficult for workers to reach.

In addition, when the ceiling heat insulating material 42 is arranged at a predetermined installation position, it enters between the ceiling girders 22 of the lower floor unit 20A and the floor girders 23 of the upper floor unit 20B in a compressed state ( are sandwiched between the girders 22 and 23), and the girders 22 and 23 suppress the positional deviation in the direction along the ceiling panel 27.例文帳に追加As a result, even if the surplus portion 42a is unfixed to suppress a decrease in workability, it is difficult to cause inconvenience such as poor heat insulation due to misalignment of the ceiling heat insulating material 42 or the like.

The ceiling heat insulating material 42 is made of fiber-based heat insulating material such as glass wool, and is easier to deform than the plate-shaped floor heat insulating material 46 . Forming the connecting heat insulating layer 36 is facilitated by forming the connecting heat insulating layer 36 not from the floor heat insulating material 46 that is relatively difficult to deform but from the ceiling heat insulating material 42 that is relatively easily deformable.

In the building 10 shown in this embodiment, a vibration control damper 61 that absorbs vibration energy applied to the floor beam 26 is provided on the floor of the upper floor unit 20B. The vibration control damper 61 will be described below with reference to FIG. FIG. 5(a) is a vertical cross-sectional view showing the structure of the floor including the damper 61, and FIG. 5(b) is a plan view of the same structure.

The damping damper 61 has a bracket 62 fixed to the small floor beam 26 and a damping member 63 supported by the bracket 62 and arranged horizontally with the small floor beam 26 . The bracket 62 is fixed to the lower surface of the small floor beam 26 by welding or the like, and protrudes to the side of the small floor beam 26 . The damping member 63 has an elastic member 63a made of elastically deformable material such as rubber, and a weight member 63b attached to the bracket 62 via the elastic member 63a. The damping members 63 are fixed in a state of being placed on the brackets 62 on both sides of the small floor beam 26 . When vibration occurs in the floor of the upper floor unit 20B, the shaking (vibration energy) of the floor girders 26 is absorbed by the vibration control damper 61 . This reduces impact noise on the floor.

Considering how the damping damper 61 fits below the floor member 28 (that is, in the inter-floor space S3), it is desirable that the damping member 63 is arranged horizontally with the floor beam 26 . In this case, in the configuration in which the interfloor heat insulation layer 35 is provided on the lower surface side of the floor surface material 28 of the upper floor unit 20B as described above, the damping member 63 and the floor heat insulation material 46 constituting the interfloor heat insulation layer 35 are There is concern that they will interfere with each other. One of the features of the present embodiment is that it is devised to eliminate such concerns. The device will be described below.

As already explained, the joist 45 that supports the floor panel 28 and serves as a part of the floor insulation layer is arranged on the upper surface side of the floor joist 26, and the floor panel 28 It is fixed to the floor beam 26 via. By interposing the floor joist 45 between the floor joist 28 and the floor beam 26, the cold of the inter-floor space S3 is suppressed from being transmitted to the floor material 28 via the floor joist 26, and the floor material is improved. It is possible to dispose the damper 61 away from 28 . In other words, it is possible to enhance the heat insulation performance of the inter-floor heat insulation layer 35 and to exhibit the damping function appropriately.

The floor heat insulating material 46 has a first heat insulating material 46a arranged so as to fill the space between the floor joists 45 so as to be adjacent to each other. A notch opened to the side of the joist 45 is formed in a portion of the first heat insulating material 46a facing the joist 45 and above the vibration damping member 63. A second heat insulating material 46b is provided so as to fill it. That is, the floor heat insulating material 46 is formed by combining the first heat insulating material 46 a and the second heat insulating material 46 b arranged in the direction along the floor surface material 28 .

The second heat insulating material 46b is positioned above the damping member 63 and is thinner than the first heat insulating material 46a. Due to such a difference in thickness, an upward recess 46c is formed in the lower surface of the floor insulating material 46 above the damping member 63 . An upper end portion of a vibration damping member 63 is inserted into the recess 46c, and a gap is secured between the bottom of the recess 46c and the vibration damping member 63 to allow the vibration damping member 63 to operate. This avoids interference between the floor heat insulating material 46 and the damping member 63 .

According to the configuration of the present embodiment described in detail above, the following excellent effects are obtained.

In the two-story building 10 in which the building units 20 are combined vertically, when the temperature is low such as in winter, the inside of the inter-floor part 16 becomes low temperature, so that even the part near the center of the building is locally cooled. There is concern that In addition, there is a concern that coldness may also be transmitted to the opening 17 provided in the inter-story section 16 . In this respect, in this embodiment, in the inter-floor section 16, the inter-floor ceiling insulation layer 34 is provided along the ceiling panel 27 of the lower floor unit 20A, and the floor panel of the upper floor unit 20B. 28, an inter-floor heat insulation layer 35 is provided along the floor surface material 28, and a connecting heat insulation connecting the inter-floor ceiling heat insulation layer 34 and the inter-floor heat insulation layer 35 in the opening peripheral portion 18 around the opening 17. Since the layer 36 is provided, it is possible to suppress local cooling in the inter-story section 16 (including the opening 17). As a result, suitable heat insulation can be realized in a multi-story unit building.

On the lower floor unit 20A side, an inter-floor ceiling insulation layer 34 is provided in a direction along the ceiling panel 27 through a portion between the ceiling girders 22 of the lower floor unit 20A and the floor girders 23 of the upper floor unit 20B. On the side of the upper floor unit 20B, the inter-floor insulation layer 35 extends in the direction along the floor material 28 through the portion between the floor girders 23 of the upper floor unit 20B and the floor surface material 28 above it. is provided. According to this configuration, cooling of the lower floor space S1 in the vicinity of the ceiling girders 22 of the lower floor unit 20A can be suppressed. Also, it is possible to suppress the cooling of the upper floor space S2 in the vicinity of the floor girders 23 of the upper floor unit 20B. In particular, there are more opportunities for residents to touch the floor than the ceiling. Therefore, by providing the floor surface material 28 and the ceiling girders 22 with the inter-floor heat insulation layer 35 to make it difficult for the above-mentioned cold to be transmitted to the residents, the effect of improving the heat insulation performance can be suitably exhibited.

By arranging surplus portions 42a of the ceiling heat insulating material 42 constituting the inter-floor ceiling heat insulating layer 34 along the partition screen material 51, the connecting heat insulating layer 36 of the opening peripheral portion 18 is formed. By adopting such a configuration, it is possible to provide appropriate heat insulating performance in the opening peripheral portion 18 and to improve workability when providing the connecting heat insulating layer 36 .

The present invention is not limited to the above embodiments, and may be implemented as follows, for example. Incidentally, each of the following configurations may be individually applied to the above embodiment, or may be applied to the above embodiment by combining a part or all of them.

In the above-described embodiment, the surplus portion 42a of the ceiling heat insulating material 42 is arranged along the partition screen material 51 to construct the connecting heat insulating layer 36 at the opening peripheral portion 18, but the specific structure of the connecting heat insulating layer 36 is optional.

For example, a connecting heat insulating layer may be constructed by arranging a heat insulating material provided separately from the ceiling heat insulating material 42 and the floor heat insulating material 46 along the partition screen material 51 . In the case of such a configuration, the partition screen material 51 is fixed to the ceiling girders 25 and the floor girders 26 via a wooden base material, similar to the inter-floor heat insulation layer 35 . A connecting heat insulating layer may be formed by arranging a plate-shaped heat insulating material so as to fill the gaps between the materials.

Further, instead of or in addition to the configuration shown in the above embodiment, the floor heat insulating material 46 is made easily deformable (made of fiber-based heat insulating material such as glass wool) in the same manner as the ceiling heat insulating material 42, and the floor heat insulating material 46 is excessively deformed. A connecting heat insulating layer may be constructed by arranging the portions along the partition screen material 51 . In the case of constructing a connecting heat insulating layer using the surplus portion of the easily deformable floor heat insulating material 46 in this way, the surplus portion hangs down toward the ceiling heat insulating material 42 due to its own weight. It becomes easy to maintain the state in which the surplus portion is in contact with the ceiling heat insulating material 42 without depending on the elasticity of the heat insulating material 42 or the like.

If one of the ceiling heat insulating material and the floor heat insulating material is formed to be more deformable than the other, a surplus portion is provided in the easily deformable one, and the surplus portion is provided along the partitioning screen material 51. It is preferable to have a configuration in which they are arranged in such a way as to suppress deterioration of workability.

In addition, as long as the division screen material 51 can be covered, how to arrange the surplus portion of the heat insulating material is arbitrary. For example, the connecting heat insulating layer 36 may be formed by folding back the surplus portion, or the connecting heat insulating layer may be formed by rolling the surplus portion. When such a change is made, the surplus part is attached to the other heat insulating material so that a gap does not occur between the one heat insulating material having the surplus part for the connecting heat insulating layer 36 and the other heat insulating material. It is preferable to keep it in a pressed state.

- In the above embodiment, the portion of the ceiling heat insulating material 42 sandwiched between the ceiling girders 22 of the lower floor unit 20A and the floor girders 23 of the upper floor unit 20B is crushed (compressed). It was configured. This is preferable for suppressing positional deviation of the ceiling heat insulating material 42 and for suppressing separation between the surplus portion 42a and the partition screen material 51 or the floor heat insulating material 46. As shown in FIG. In order to stably demonstrate the heat insulating performance of the connecting heat insulating layer 36 by suppressing the positional deviation of the ceiling heat insulating material 42 (the surplus portion 42a), the surplus portion 42a is replaced with the partition screen material 51 or the floor heat insulating material 46 instead of the above configuration. It is also possible to set it as the structure fixed to.

In the inter-floor heat insulation layer 35 shown in the above embodiment, after lowering the height position of the floor beam 26 by interposing the joist 45 between the floor surface material 28 and the floor beam 26, By combining the heat insulating materials 46a and 46b with different thicknesses, a recess 46c is formed in the floor heat insulating material 46 to avoid interference between the floor heat insulating material 46 and the damper 61. If it is possible to avoid interference between the damper and the floor heat insulating material by lowering the height position of the beam, the configuration corresponding to the recess may be omitted.

In the above-described embodiment, the ceiling insulation material 42 constituting the inter-floor insulation layer 34 and the floor insulation material constituting the inter-floor insulation layer 35 rather than the wall insulation material constituting the outer wall insulation layer 31 46 has a lower heat transmission coefficient (higher heat insulation performance), but a configuration in which the heat transmission coefficients of the wall insulation material, the ceiling insulation material 42, and the floor insulation material 46 are the same, or that of the wall insulation material. The ceiling heat insulating material 42 and the floor heat insulating material 46 may have a higher heat transmission coefficient (lower heat insulation performance).

In the above-described embodiment, the ceiling girders 25 of the lower floor unit 20A and the floor sills of the upper floor unit 20B are provided between the partition screen material 51 that partitions and forms the opening 17 and the connecting heat insulating layer 36 (surplus portion 42a). Although the beams 26 are positioned, it is also possible to adopt a structure in which the ceiling small beams 25 and the floor small beams 26 are not positioned between the partition screen material 51 and the connecting heat insulating layer 36 (surplus portion 42a).

- In the above-described embodiment, a floor insulation structure is used as the insulation structure for the lowest floor of the building 10, but instead of this, a foundation insulation structure in which insulation is provided along the inner peripheral surface of the foundation 11 is used. good too. Also, although the ceiling insulation structure is used as the insulation structure for the top floor ceiling of the building 10, instead of this, a roof insulation structure in which insulation is provided along the roof panel may be used.

・The number of floors of a unit-type building is arbitrary as long as it has multiple floors. For example, the present invention can be applied to three-story buildings and four-story buildings.

DESCRIPTION OF SYMBOLS 10... Building, 16... Inter-floor part, 17... Opening, 18... Opening surrounding part, 20... Building unit, 20A... Lower floor unit, 20B... Lower floor unit, 21... Column, 22... Ceiling girders, 23... Floor Large girders 26 Small floor beams 27 Ceiling surface material 28 Floor material 31 Exterior wall insulation layer 34 Inter-floor ceiling insulation layer 35 Inter-floor insulation layer 36 Connecting insulation layer 42 Ceiling heat insulating material 42a Excess portion 45 Joist 46 Floor heat insulating material 61 Damping damper 62 Bracket 63 Damping member.

Claims (7)

Applied to a unit-type building comprising a plurality of pillars and ceiling girders and floor girders connected to the pillars, wherein the plurality of building units are combined to construct a multi-story building. ,
A heat insulating structure for a building provided along an outer peripheral portion surrounding the entire building and provided with an outer peripheral heat insulating layer that insulates the outer peripheral portion of the building,
In the inter-floor area, which is a range including the ceiling girders of the lower floor unit on the lower floor side and the floor girders of the upper floor unit on the upper floor side of the building units arranged vertically, a lower floor space and an upper floor space are divided. A communicating opening is provided,
In the inter-floor portion, a ceiling insulation layer is provided along the upper surface of the ceiling surface material of the lower unit, and a floor insulation layer is provided along the lower surface of the floor surface material of the upper unit. A heat insulating structure for a building, wherein a floor heat insulating layer is provided along the face material, and a connecting heat insulating layer connecting the ceiling heat insulating layer and the floor heat insulating layer is provided around the opening around the opening. On the lower floor unit side, the ceiling insulation layer is provided in a direction along the ceiling surface material through a portion between the ceiling girders of the lower floor unit and the floor girders of the upper floor unit,
On the upper floor unit side, the floor insulation layer is provided in a direction along the floor surface material through a portion between the floor beam of the upper floor unit and the floor surface material above it. 2. The thermal insulation structure of the building according to 1. The ceiling heat insulating layer has a ceiling heat insulating material laid on the ceiling surface material of the lower floor unit, and the surplus part of the ceiling heat insulating material is vertically 3. The thermal insulation structure of a building according to claim 1 or 2, wherein the connecting thermal insulation layer is formed by extending the joint thermal insulation layer. The ceiling heat insulating layer has a ceiling heat insulating material disposed on the ceiling surface material of the lower floor unit,
The floor insulation layer has a floor insulation material arranged under the floor surface material of the upper floor unit,
One of the ceiling heat insulating material and the floor heat insulating material is configured to be easier to deform than the other. 3. The thermal insulation structure of a building according to claim 1, wherein the connecting thermal insulation layer is formed by extending in a direction. In the insulating material that constitutes the connecting insulating layer with the surplus part, the part of the insulating material that passes between the floor girders of the upper floor unit and the ceiling girders of the lower floor unit is crushed. 5. The heat insulating structure for a building according to claim 3, wherein the heat insulating structure abuts on the floor girders and the ceiling girders so as to be in a folded state. An outer wall insulation layer is provided on the outer wall of the building,
6. The building insulation structure according to claim 1, wherein the floor insulation layer and the ceiling insulation layer have a higher insulation performance than the outer wall insulation layer. The upper floor unit has a plurality of floor girders spanning between the floor girders facing each other, and a damper for absorbing vibration energy applied to the floor girders,
The damping damper has a bracket fixed to the floor beam, and a damping member supported by the bracket and arranged in a position parallel to the floor beam,
2. The floor beam is provided with a joist on the upper surface side thereof to support the floor surface material and to be a part of the floor insulation layer, and the vibration control damper is fixed on the lower surface side thereof. The thermal insulation structure of a building according to claim 6.

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