JP2009243251A - Wall panel structure and method for constructing wall panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wall panel structure capable of surely obtaining a predetermined damping performance corresponding to the adhesive area of a viscoelastic body held and attached between the mutual header surfaces of adjacent wall panels and a method for constructing the wall panel. <P>SOLUTION: In the wall panel structure 1A, the header surfaces 3 of the adjacent wall panels 2 are abutted mutually to form a joint section 5, and the wall panels 2 are fitted mutually to a building frame B so as to be moved in the longitudinal direction of the header surfaces 3 by the main tongue sections 3b and 3c. In the wall panel structure 1A, the viscoelastic body 7 is held and attached between the mutual header surfaces 3 of the wall panel 2 in the joint section 5, and the viscoelastic body 7 is arranged while being deviated in the thickness direction D of the wall panels 2 to the main tongue sections 3b and 3c. Consequently, the holding state of the viscoelastic body 7 is easy to conduct a visual observation from at least one side of the wall panels 2 through the opening of the joint section 5 after the completion of the building of the wall panels 2, and the predetermined damping performance corresponding to the adhesive area of the viscoelastic body 7 held and attached between the mutual header surfaces 3 of the wall panels 2 can be obtained surely. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wall panel structure and a wall panel construction method capable of improving the damping performance of a building.

Patent Document 1 describes a technique for improving the damping performance of a building by sandwiching a viscoelastic body on the small edge of the wall panel in a wall panel structure attached so as to rock (sway) the building frame. In this type of wall panel structure, in order to correct the difference in warpage of adjacent wall panels and to bring out the surface of the wall and enhance the integrity of the adjacent wall panels in the out-of-plane direction, The actual structure is provided at a substantially central portion in the thickness direction, and the joint portion is formed so that the actual structures of the facets face each other. Further, in order to provide a vibration damping function, a viscoelastic body is sandwiched between the small edge surfaces of the wall panel at a substantially central portion in the thickness direction of the wall panel. As a result, this wall panel structure vibrates in the viscoelastic body interposed between the adjacent wall panels due to relative displacement between the adjacent wall panels when the wall panels are locked due to shaking of the building due to earthquake or wind. Since energy is transmitted and consumed as thermal energy, the attenuation performance of the building can be improved.
JP-A-11-62058

  However, in the conventional wall panel structure, the joint portion is formed so that the actual structure provided in the substantially central portion in the thickness direction of the wall panel edge surface is abutted, and the viscoelastic body is provided at the location where the actual structure is provided. Therefore, there is a problem that it is difficult to confirm the sandwiched state, which is likely to be unstable, and that it is difficult to obtain a predetermined attenuation performance according to the adhesion area of the viscoelastic body sandwiched on the small edge of the wall panel. there were.

  An object of the present invention is to solve the above-described problems, and a predetermined damping performance according to the adhesion area of a viscoelastic body sandwiched between the small edge surfaces of adjacent wall panels can be reliably obtained. It aims at providing the construction method of a wall panel structure and a wall panel.

  When wall panels are brought into contact with each other to form a joint, and a viscoelastic body is sandwiched between the joints to provide a vibration damping function, the center of gravity of the wall panel to be locked is taken into account, and the thickness of the wall panel It is generally considered that it is optimal to sandwich a viscoelastic body at a substantially central portion. However, when the inventor forms a joint portion by matching the actual structure of the substantially central portion of the wall panel in the thickness direction, the sandwiched state of the viscoelastic body sandwiched by the actual structure is unstable. The idea that there is a possibility of becoming, was conceived, and intensive study was performed based on the idea. As a result, the present inventor has substantially improved the vibration damping function as long as the viscoelastic body can be securely clamped without having to place the viscoelastic body in the substantially central portion in the thickness direction of the wall panel. Obtained the knowledge that there was no problem. The present invention has been derived based on this finding.

  The present invention provides a wall panel structure in which the joint surfaces having an actual structure are formed by abutting the small face surfaces of adjacent wall panels, and the wall panels are movable in the longitudinal direction of the small face surfaces. The viscoelastic body is sandwiched between the small facets of the wall panel at the joint, and the viscoelastic body is disposed in a biased manner in the thickness direction of the wall panel with respect to the actual structure. And

  According to the present invention, since the viscoelastic body is arranged to be offset in the thickness direction of the wall panel with respect to the actual structure, from the at least one side of the wall panel through the gap in the joint after the wall panel is built. It becomes easy to visually recognize the sandwiched state of the viscoelastic body, and a predetermined attenuation performance according to the adhesion area of the viscoelastic body sandwiched on the small edge surface of the wall panel can be reliably obtained.

  Furthermore, it is preferable that the viscoelastic body is arranged so as to be biased only on one side in the thickness direction of the wall panel with respect to the actual structure. Even when the wall panel is abutted with each other so as to fit the actual structure, the gap at the joint depends on the individual differences due to the wall panel manufacturing accuracy and the accuracy of the groundwork on the building frame side. Is not uniform on both sides of the actual structure, but narrows on one side and spreads on the other side in the opposite direction, and the contact state of the facet may differ between the one side and the other side. Therefore, when the viscoelastic body is arranged on both sides of the wall panel in the thickness direction so as to sandwich the actual structure, the viscoelastic body is securely sandwiched on one side, but the viscoelastic body is sandwiched on the other side. The condition may become unstable. On the other hand, in the above configuration, since the viscoelastic body is arranged only on one side in the thickness direction of the wall panel with respect to the actual structure, the viscoelastic body on one side can be securely clamped. For example, it is possible to easily determine the damping performance obtained from the adhesion area of the viscoelastic body without considering the other side, and as a result, it becomes easy to ensure the predetermined damping performance.

  Furthermore, it is preferable that one side of the wall panel attached to the outer periphery of the building housing and arranged with the viscoelastic body biased is the indoor side of the building housing. In the wall panel structure attached to the outer periphery of the building frame, the viscoelastic body is biased on the indoor side, making it easy to see the sandwiched state of the viscoelastic body from the indoor side, and the viscoelastic body is flame retardant. Even if it contains non-organic components, it is possible to prevent the spread of fire to the indoor side due to a fire from the outside of the building frame, and the fireproof performance is improved.

  Furthermore, it is preferable that a recess for accommodating a viscoelastic body is formed on at least one of the facets of adjacent wall panels. By making the gap between joints, that is, the space between the small facets as small as possible, the size of the viscoelastic body can be increased by the volume that can be accommodated in the recess, while ensuring the fireproof performance of the joint. Considering the allowable amount of shear deformation and shear bond resistance of the viscoelastic body against the amount of movement in the length direction of the joints of the wall panel, that is, the longitudinal direction of the facet, assumed in the event of an earthquake Therefore, it is easy to determine a thickness that does not cause breakage, and a comprehensive design for improving the damping performance can be facilitated.

  Furthermore, it is preferable that the concave portion has a bottom surface portion and a side surface portion rising from the bottom surface portion, and the viscoelastic body is bonded only to the bottom surface portion. Since the viscoelastic body and the side surface are not bonded, the entire viscoelastic body can be freely displaced and the vibration energy can be consumed as thermal energy, so that the damping performance is improved.

  In addition, the present invention is a construction method of a wall panel that is attached to a building frame so that the edge surfaces of adjacent wall panels form joints via a viscoelastic body, and is attached to the building frame, The corner portion formed at the lower end of the fore edge of another wall panel is brought close to or brought into contact with the margin of the wall panel in which the viscoelastic body is disposed leaving the margin portion below the fore edge surface. However, the other wall panel is attached to the building frame.

  In the present invention, another wall panel is attached to the building frame so that the viscoelastic body is interposed between the wall panel already attached to the building frame. In this case, the other wall panel is aligned while the corner formed at the lower end of the small edge surface is brought close to or in contact with the small edge surface of the wall panel already attached to the building frame, Attached to the building frame. In this case, if the viscoelastic body is arranged over the entire facet of the wall panel, the corners of the other wall panel may come into contact with the viscoelastic body and peel off the viscoelastic body, There is a possibility that the viscoelastic body is dragged downward by the small edge surface of the panel and the adhesive force becomes non-uniform. Then, variation occurs in the adhesion area of the viscoelastic body, and it becomes difficult to ensure a predetermined attenuation performance according to the adhesion area. However, in the present invention, the viscoelastic body is disposed leaving a blank portion at the bottom of the small edge of the wall panel, and the corners of the other wall panels are attached to the building frame in contact with the blank portion, The adhesive area of the viscoelastic body does not vary from one wall panel to another, and it is possible to reliably ensure a predetermined attenuation performance according to the adhesive area of the viscoelastic body sandwiched between the small edges of the wall panel. .

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to ensure reliably the predetermined | prescribed attenuation | damping performance according to the adhesion area of the viscoelastic body pinched by the wall panel small-mouthed surface.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a wall panel structure according to the first embodiment. FIG. 2 is an enlarged perspective view showing a joint portion of the wall panel structure according to the present embodiment. FIG. 3 is an enlarged cross-sectional view showing a joint portion of the wall panel structure.

(First embodiment)
As shown in FIGS. 1 to 3, the wall panel structure 1 </ b> A according to the present embodiment is used as an outer wall structure provided on the outer periphery of a building frame B (see FIG. 4) such as a steel structure, and has a plurality of walls. The panel 2 is attached by the rocking construction method by the wall panel attachment portion 4. Adjacent wall panels 2 face each other with their facets 3, and a joint 5 is formed at the boundary between both wall panels 2. A viscoelastic body 7 is sandwiched between the joint portions 5. During an earthquake, the wall panel 2 rocks (sways) around the upper and lower wall panel mounting portions 4, and the adjacent wall panels 2 generate relative displacement in the longitudinal direction of the fore edge surface 3 along the joint portion 5. Vibration energy is transmitted to the viscoelastic body 7 sandwiched between the joint portions 5. The vibration energy transmitted to the viscoelastic body 7 is converted into thermal energy, thereby producing a vibration damping effect and improving the damping performance of the building.

  The wall panel 2 consists of a lightweight cellular concrete panel having a thickness of about 100 mm. A chamfered portion 3a (see FIG. 3) is formed on the small edge surface 3 of the wall panel 2 at the side edge on the outer A1 side of the building frame B and the side edge on the indoor A2 side. The chamfer dimension of the chamfered portion 3a on the outer A1 side and the indoor A2 side is about 9 mm. The reason for forming the chamfered portion 3a is to prevent chipping (deletion) or scratching when the panel is built.

  In order to correct the difference in warpage of the adjacent wall panel 2 on the small edge surface 3 of the wall panel 2, and to bring out the surface of the wall and to improve the integrity of the adjacent wall panel 2 in the out-of-plane direction, Real parts (real structures) 3b and 3c are provided. Of the pair of adjacent wall panels 2, one wall panel 2 is formed with a convex real part 3b, and the other wall panel 2 is formed with a concave real part 3c. Adjacent wall panels 2 are installed such that their real parts 3b, 3c fit in a concavo-convex shape. The real parts 3b and 3c extend linearly along the longitudinal direction of the fore edge surface 3, and the real panels 3b and 3c allow the wall panels 2 to move in the longitudinal direction of the fore edge surface 3. However, movement in the out-of-plane direction is restricted.

  The real parts 3 b and 3 c are provided at the approximate center in the thickness direction D of the wall panel 2 on the facet 3. The viscoelastic body 7 is arranged so as to be biased to one side of both sides of the wall panel 2 in the thickness direction D so as to sandwich the real parts 3b and 3c. This one side corresponds to the room A2 side of the building frame B. On the other side, a sealing portion 9 filled with a sealing material for filling a gap between the joint portions 5 is provided. A bond breaker (not shown) for preventing the three-sided adhesion of the sealing portion 9 is provided in the joint portion 5 on the other side where the sealing portion 9 is provided. By preventing the three-surface adhesion of the sealing portion 9, an excessive load is hardly applied to the sealing portion 9, and surface cracks of the sealing portion 9 can be suppressed.

  The viscoelastic body 7 has a width dimension of about 30 mm and a thickness of about 2 mm, and is arranged so as to match the end of the chamfered portion 3a on the indoor A2 side. The viscoelastic body 7 is made of a material having both properties of viscosity and elasticity, and is an effective object for shock absorption and vibration reduction. In this embodiment, butyl type or acrylic type is used. The thickness of the viscoelastic body 7 may be determined as appropriate, but is preferably about 0.5 mm to 4 mm.

  In the present embodiment, the real structure is formed by the real parts 3b and 3c, but the real structure is not limited to the real parts 3b and 3c. Here, the actual structure needs to be a structure in which the wall panel 2 is easily constrained in the out-of-plane direction, but on the other hand, as a dimension related to the in-plane direction, the degree of contact of the facet 3 of the wall panel 2 It is desirable to make the structure difficult to limit. Specifically, taking into account the thickness of the viscoelastic body 7, when the joint portion 5 is formed by abutting the adjacent wall panels 2 together, the viscoelastic body 7 and the fore edge surface 3 of the wall panel 2 first come into contact with each other. Thus, it is preferable to have an actual structure having dimensions designed so that adhesion between the viscoelastic body 7 and the facet 3 of the wall panel 2 occurs.

  In the wall panel structure 1A according to the present embodiment, the actual parts 3b and 3c disposed in the substantially central part in the thickness direction D of the facet 3 of the wall panel 2 are avoided, and the viscoelastic body 7 is replaced with the actual part 3b, The wall panel 2 is sandwiched on the room A2 side (one side) in the thickness direction D with respect to 3c. Therefore, the viscoelastic body 7 can be reliably clamped without being disturbed by the real parts 3b and 3c without being in an unstable clamping state.

  Furthermore, since the wall panel structure 1A is used as the outer wall structure of the building frame B and the one side on which the viscoelastic body 7 is sandwiched is the indoor A2 side, the viscoelastic body 7 is directly confirmed visually from the indoor A2 side. it can. Therefore, it is possible to easily confirm the sandwiched state of the viscoelastic body 7 and whether the predetermined damping performance according to the adhesion area of the viscoelastic body 7 sandwiched on the small edge surface 3 of the wall panel 2 can be exhibited. It becomes easy to confirm whether or not. As a result, a predetermined attenuation performance according to the adhesion area of the viscoelastic body 7 sandwiched between the facets 3 of the wall panel 2 can be reliably obtained. Note that the visual confirmation from the room A2 side can be performed before the wall panel 2 is completely built and the interior finish is performed.

  Furthermore, in the wall panel structure 1A, since the side where the viscoelastic body 7 is sandwiched is the room A2 side in the thickness direction D of the wall panel 2, the viscoelastic body 7 is sandwiched on the outer A1 side where the sealing portion 9 is located. Compared with the case where it makes it, the adhesion area of the viscoelastic body 7 can be ensured more widely.

  Furthermore, since the viscoelastic body 7 containing an organic component that is not flame retardant is used as the room A2 side of the building housing B, it is possible to prevent the fire from spreading to the room A2 side due to a fire from outside the building. The structure can be easily secured.

  For example, in the case of a lightweight cellular concrete panel, it is said that the wall panel 2 needs to have a thickness of 75 mm or more in order to ensure fire resistance for about 60 minutes to 120 minutes. In the wall panel structure 1A according to the present embodiment, the thickness of the wall panel 2 is about 90 mm, and the distance from the outside A1 side is 75 mm or more and deviated toward the room A2 side, that is, 15 mm (= 90 mm-75 mm from the room A2 side). ) If the viscoelastic body 7 is sandwiched within, the 75mm portion from the outside becomes the same as the conventional standard lightweight cellular concrete panel wall panel structure 1A, ensuring a fire resistance of about 60 to 120 minutes. Easy structure.

  The same applies to the case where the thickness of the wall panel 2 is 100 mm or 150 mm, where the distance from the outside A1 side is 75 mm or more biased toward the room A2 side, that is, 25 mm (= 100 mm−75 mm) from the room A2 side or If the viscoelastic body 7 is sandwiched within 75 mm (= 150 mm−75 mm), the portion up to 75 mm from the outside A1 side is the same as the wall panel structure 1A of the conventional standard lightweight lightweight concrete panel. It becomes the same, and it becomes a structure which is easy to ensure fireproof performance of about 60 minutes to 120 minutes. In addition, it is not essential to secure a portion having a distance of 75 mm from the outer surface, and the viscoelastic body 7 is sandwiched between the small edge surface 3 of the wall panel 2 and the room A2 side in the thickness direction D of the wall panel 2. More importantly, sandwiching the viscoelastic body 7 on the side of the room A2 from the substantially central portion in the thickness direction D of the wall panel 2 at the small face 3 of the wall panel 2 ensures fire resistance. It is important to make the structure easy.

  In addition, the wall panel 2 having a certain thickness has a higher fire resistance effect when the viscoelastic body 7 is biased toward the room A2 as compared with the thin wall panel 2. For example, in the case of the wall panel 2 made of a lightweight cellular concrete panel, in terms of JIS (JISA 5416-2007), a thick ALC, that is, a wall panel 2 having a wall panel 2 thickness of 75 mm to 180 mm is preferable, and 90 mm to 180 mm is more preferable, and 100 to 180 mm is most preferable.

  Next, referring to FIG. 5, the wall panel structure 1 </ b> B having the wall panel structure 1 </ b> A and a viscoelastic body 7 sandwiched between both sides of the wall panel 2 in the thickness direction D with the real parts 3 b and 3 c interposed therebetween. The result of comparing (Comparative Example) will be described. FIG. 5A is a cross-sectional view of a wall panel structure according to this embodiment, and FIG. 5B is a cross-sectional view of a wall panel structure according to a comparative example.

  The same effect can be obtained even in the wall panel structure 1 </ b> B according to the comparative example in that the viscoelastic body 7 can be easily viewed from the gap between the joint portions 5. However, as shown in FIG. 5 (b), in the wall panel structure 1B according to the comparative example, depending on the individual difference due to the manufacturing accuracy of the wall panel 2 and the accuracy of the foundation on the building skeleton B side, The gaps are not uniform on both sides of the real parts 3b and 3c, and may narrow on one side and expand on the other side. In such a case, an angle is formed between the facets 3 facing each other, and the contact state of the facets 3 is different between the one side and the other side, so that the viscoelastic bodies 7 on both sides are securely attached. It becomes difficult to pinch. As a result, for example, the viscoelastic body 7 is securely clamped on the indoor A2 side, but on the outer A1 side, the clamped state of the viscoelastic body 7 becomes unstable and a non-bonded portion X is generated. There is a possibility that the non-bonded portion X is generated on the indoor A2 side.

  In the wall panel structure 1A according to the present embodiment with respect to the comparative example, as shown in FIG. 5A, the viscoelastic body 7 is disposed only on one side (inside the room A2). If the viscoelastic body 7 on one side is securely clamped, the damping performance obtained from the adhesion area of the viscoelastic body 7 can be easily determined without considering the other side, and as a result, the predetermined damping performance can be obtained. It becomes easy to secure.

  FIG. 6 is a perspective view showing the viscoelastic body 7 disposed on the fore edge surface 3 of the wall panel 2. As described above, the viscoelastic body 7 is arranged on the side of the room A2 in the thickness direction D of the wall panel 2 on the facet 3 so as to match the end of the chamfered portion 3a. The viscoelastic body 7 is disposed in the longitudinal direction from the upper end portion of the fore edge surface 3, and is attached (arranged) to the lower portion of the fore edge surface 3 leaving a blank portion 3e. With this configuration, it is possible to improve the workability in building (attaching) the wall panel 2 described later. The length of the margin is preferably 100 mm or more from the viewpoint of preventing the corner 2a (see FIG. 7) of the other wall panel from contacting the viscoelastic body 7, and the other wall panel is vertically built. From the viewpoint of preventing the viscoelastic body 7 from being dragged downward by the small edge surface of the other wall panel, 200 mm or more is more preferable.

(Wall panel construction method)
Next, with reference to FIG.7 and FIG.8, the construction method of the wall panel 2 in this embodiment is demonstrated. As shown in FIG. 7, the wall panels 200, 210, and 220 are attached to the building frame B so as to be sequentially arranged. In FIG. 7, the first wall panel 200 and the second wall panel 210 adjacent to the wall panel 200 are already attached to the building frame B, and the corner 2a of the third wall panel 220 is the other As a wall panel, the second wall panel 210 is positioned close to or in contact with the facet surface 3 and is vertically built. On the wall panels 200, 210, and 220, the viscoelastic body 7 is disposed leaving a blank portion 3 e at the lower portion of the fore edge surface 3.

  First, the third wall panel 220 is suspended at a predetermined position by a mechanical device (not shown) such as a crane and a nylon sling Q or the like. Next, the wall panel 220 is placed at a location slightly away from the wall panel 210. Next, the worker P moves the wall panel 220 closer to the wall panel 210 while tilting the wall panel 220 so that the actual part 3 b of the wall panel 220 is aligned with the actual part 3 a of the wall panel 210. At this time, the worker P makes the corner 2 a formed at the lower end of the small edge surface 3 of the wall panel 220 close to or abuts the margin 3 e of the small edge surface 3 of the wall panel 210. Align. Next, while adjusting the suspension position by the crane, the worker P shifts the corner 2a of the wall panel 220 downward along the margin 3e of the wall panel 210, and builds the wall panel 220 vertically. Go. Here, even if it does not contact | abut in the case of position alignment, you may contact | abut in the process of building up perpendicularly | vertically. In addition, the distance which makes the corner | angular part 2a formed in the small edge surface 3 of the wall panel 210 and the lower end of the small edge surface 3 of the wall panel 220 approach is 5 mm or less in a horizontal distance when the width of the wall panel 220 is 300 mm. It is preferable.

  Next, as shown in FIG. 8, after removing the nylon sling Q from the wall panel 220, the worker P presses the wall panel 220 against the wall panel 210, and the wall panel attachment portion 4 causes the building frame B to be pressed. Fix it. Note that release paper (not shown) for protecting the adhesive surface is affixed to the viscoelastic body 7 before being built. When the wall panel 220 is built, the release paper attached to the viscoelastic body 7 of the wall panel 210 is peeled off in advance. On the other hand, in consideration of the suspension by the nylon sling Q and the workability of the worker P, the release paper of the viscoelastic body 7 of the wall panel 220 on the side to be built may be stuck.

  As shown in FIGS. 7 and 8, when building the adjacent wall panel 220, the worker P pushes the wall panels 210 and 220 sequentially to build them, and then attaches the wall panels. It is fixed to the building frame B by the part 4. Since the adjacent wall panel 220 is pressed and built, the viscoelastic body 7 is securely clamped to the small edge surface 3 of the wall panels 200 to 220 regardless of variations in the accuracy of the housing to which the wall panels 200 to 220 are attached. be able to. The wall panels 200 to 220 were erected on the small edge surface 3 of the wall panels 200 to 220 so as to be subjected to a primer treatment on the adhesive portion of the viscoelastic body 7 and pressed. The viscoelastic body 7 has a butyl or acrylic specification, but the viscoelastic body 7 is not compressed so much even after the wall panels 200 to 220 are built so as to be pressed. It fits in the dimensions close to the initial thickness.

  According to the above construction method, the front and rear, right and left alignment of the wall panel 220 is facilitated by bringing the corner 2a of the wall panel 220 close to or in contact with the margin 3e of the wall panel 210. Furthermore, since the viscoelastic body 7 is disposed in the wall panel 210 leaving the blank portion 3e, the viscoelastic body 7 may be displaced or damaged by the corner 2a of the wall panel 220 during the building. It can be prevented, and it can be easily constructed without the need for installation.

  Further, for example, when the wall panel 210 is not provided with the blank portion 3e and the viscoelastic body 7 is disposed over the entire facet 3, the lower end of the viscoelastic body 7 is a corner of the wall panel 220 when built. It is assumed that the part 2a is pulled off or protrudes and the appearance after construction may be deteriorated. Furthermore, when the corner 2a of the wall panel 220 comes into contact with the viscoelastic body 7 and peels off the viscoelastic body 7 during installation, the viscoelastic body 7 is not uniformly bonded, and the bonding area is uncertain. Therefore, the adhesion area of the viscoelastic body varies, and it becomes difficult to ensure a predetermined attenuation performance corresponding to the adhesion area, which is calculated in advance by design.

  However, according to the above-described configuration and construction method, the adhesion area of the viscoelastic body 7 does not vary between the wall panels 200, 210, and 220, and between the small edge surfaces 3 of the wall panels 200, 210, and 220. It is possible to reliably obtain a predetermined attenuation performance according to the adhesion area of the viscoelastic body 7 sandwiched between the two.

(Second Embodiment)
Next, the wall panel structure according to the second embodiment of the present invention will be described with reference to FIG. FIG. 9 is an enlarged cross-sectional view showing a joint portion of the wall panel structure according to the second embodiment. In addition, about the wall panel structure which concerns on 2nd Embodiment, about the element and member similar to the wall panel structure which concerns on 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  The wall panel 12 of the wall panel structure 1C according to the present embodiment is made of a lightweight cellular concrete panel having a thickness of about 100 mm, and the adjacent wall panels 12 are fitted with the actual portions 13c and 13d of the small edge surface 13 in an uneven shape. Installed. The viscoelastic body 17 is arranged so as to be biased toward one side in the thickness direction D of the wall panel 12, that is, the room A2 side of the building housing B with respect to the real parts 13c and 13d. The width dimension L of the viscoelastic body 17 was set to 22 mm with a margin. On the other side in the thickness direction D with respect to the actual parts 13c and 13d, that is, on the outer A1 side of the facet surface 3, a sealing part 15 filled with a sealing material for filling the gap of the joint part 5 is provided. Yes. A back-up material 16 for preventing the three-sided adhesion of the sealing portion 15 is housed inside the joint portion 5 on the other side where the sealing portion 15 is provided.

  In the wall panel structure 1C according to the present embodiment, the chamfer dimension of the chamfered portion 13a on the indoor A2 side where the viscoelastic body 17 is sandwiched is made smaller than the chamfered dimension of the chamfered portion 13b on the outer A1 side. I have to. The smaller the chamfer dimension of the chamfered portion 13a on the indoor A2 side, the wider the adhesion area of the viscoelastic body 17 can be made. On the other hand, if the chamfer dimension is reduced, the effect of preventing defects and scratches is weakened. Therefore, in this embodiment, the chamfering dimension of the chamfered part 13a on the indoor A2 side is 9 mm with respect to the chamfered part 13b on the outer A1 side having a chamfering dimension of about 9 mm that is adopted in a general lightweight cellular concrete panel. Smaller than. The chamfer dimension of the chamfered portion 13a on the indoor A2 side is preferably 5 mm to 1 mm, and 4 mm from the viewpoint of ensuring the adhesion area of the viscoelastic body 17 and preventing damage and scratches when the panel is built. ˜2 mm is preferable, and 3 mm is more preferable.

  Similarly to the wall panel structure 1A according to the first embodiment, the wall panel structure 1C according to the present embodiment can securely clamp the viscoelastic body 17 without being in an unstable clamping state. Furthermore, the viscoelastic body 17 can be directly confirmed visually from one side (the room A2 side) on which the viscoelastic body 17 is sandwiched. Accordingly, it is possible to easily confirm the sandwiched state of the viscoelastic body 17 and whether the predetermined damping performance according to the bonding area of the viscoelastic body 17 sandwiched on the small edge surface 13 of the wall panel 12 can be exhibited. It becomes easy to confirm whether or not. As a result, it is possible to reliably obtain a predetermined attenuation performance according to the adhesion area of the viscoelastic body 17 sandwiched between the small edge surfaces 13 of the wall panel 12.

  In the case of the wall panel structure 1C according to the present embodiment, the adhesion area of the viscoelastic body 17 is increased by attaching the wall panel 12 to the building frame B by the same construction method as the construction method according to the first embodiment. Therefore, a predetermined damping performance corresponding to the bonding area of the viscoelastic body 17 sandwiched between the small edge surfaces 13 of the wall panel 12 can be reliably obtained.

(Third embodiment)
Next, a wall panel structure according to a third embodiment of the present invention will be described with reference to FIG. FIG. 10 is an enlarged cross-sectional view showing a joint portion of the wall panel structure according to the third embodiment. In addition, about the wall panel structure which concerns on 3rd Embodiment, about the element and member similar to the wall panel structure which concerns on 1st Embodiment or 2nd Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  The wall panel 22 of the wall panel structure 1D according to the present embodiment is formed of a lightweight cellular concrete panel having a thickness of about 100 mm, and the adjacent wall panels 22 are fitted with the actual portions 23c and 23d of the small edge surface 23 in an uneven shape. Installed. The viscoelastic body 27 is arranged so as to be biased toward one side (in the room A2 side) of the wall panel 22 in the thickness direction D with respect to the actual parts 23c and 23d, that is, the room A2 side of the building housing B. On the other side (outside A1 side) of the wall panel 22 in the thickness direction D, a backup material 16 and a sealing portion 15 are provided.

  A carved portion (concave portion) 25 that can accommodate a viscoelastic body 27 is formed on the small-mouthed surface 23 of the wall panel 22. In the present embodiment, the engraved portions 25 are formed on both facets 23 facing each other, and the viscoelastic body 27 is accommodated so as to be wrapped by both the engraved parts 25. Only the engraved portion 25 may be formed, and the viscoelastic body 27 may be accommodated only in the one engraved portion 25. The sandwiching of the viscoelastic body 27 in the engraved portion 25 will be described in detail.

  Of the engraved portions 25 formed on both wall panels 22, one engraving dimension (engraving depth) is “H1”, and the other engraving dimension is “H2”. Each engraving dimension H1, H2 may be the same or different. When the sum of both engraving dimensions is “H”, “H = H1 + H2”. Assuming that the thickness dimension of the viscoelastic body 7 necessary for ensuring a predetermined vibration damping performance is “N”, the total engraving dimension “H” is smaller than the thickness dimension “N” of the viscoelastic body 7. Set as follows.

  When the engraved portion 25 is not formed when the adjacent wall panel 22 is pressed and built, the thickness dimension “N” of the viscoelastic body 27 is the vacant dimension of the joint portion 5, that is, the facet 23. It becomes the gap size between each other. On the other hand, in this embodiment, since the engraving part 25 which accommodates the viscoelastic body 27 is formed, the empty dimension S of the joint part 5 is small compared with the case where the engraving part 25 is not formed. Become. As a result, the end face 23 of the wall panel 22 is easily abutted so as not to impair the fire resistance of the wall panel structure 1D.

  For example, it is assumed that the empty dimension S of the joint portion 5 of the wall panel 22 is about 1 mm so as not to impair the fire resistance of the wall panel structure 1D. Here, in the case where the thickness dimension “N” of the viscoelastic body 27 necessary for ensuring a predetermined vibration damping performance is 2 mm, the engraving dimensions (H1, H2) of the wall panel 22 are each 0.5 mm. As described above, by setting the total engraving dimension “H” of the engraved portions 25 of both adjacent wall panels 22 to 1 mm, the free dimension S of the joint portion 5 of the wall panel 22 can be secured to about 1 mm.

  The required thickness dimension “N” of the viscoelastic body 27 is assumed to be the amount of movement in the length direction of the joint portion 5 of the wall panel 22, that is, the longitudinal direction of the small edge surface 23, which is assumed at the time of the earthquake. In consideration of the allowable shear deformation amount and shear bonding resistance of the viscoelastic body 27, the thickness is determined so as not to cause breakage. However, if the thickness dimension “N” is increased, the cost required for the viscoelastic body 27 is increased and uneconomical.

  Further, the empty dimension of the joint part 5 may be defined in advance in consideration of the fire resistance performance of the wall panel 22, and the engraved part 25 may be formed so as to meet the specified value of the empty dimension. For example, it is assumed that the prescribed value “A” of the empty dimension of the joint portion 5 of the wall panel 22 is 1 mm so as not to impair the fire resistance of the wall panel structure 1D. And when the thickness dimension “N” of the viscoelastic body 27 necessary for ensuring the predetermined vibration damping performance is 3 mm, the engraving dimensions (H1, H2) of the engraved portion 25 are set to 1 mm, respectively. By setting the total engraving dimension “H” of both wall panels 22 to 2 mm, the vacant dimension “S” of the facet 23 of the wall panel 22 should be approximately 1 mm, which is substantially the same dimension as the specified value “A”. Can do.

  The prescribed value “A” of the vacant dimension of the joint portion 5 is set in a range of 2 mm to 0.5 mm in consideration of ensuring fire resistance, manufacturing accuracy of the wall panel 22 and accuracy of the base on the housing side. Further, 1.5 mm to 0.75 mm is preferable, and about 1 mm is most preferable. For reference, when the conventional wall panel without the viscoelastic body 27 is a lightweight cellular concrete panel, the joints are taken into account in ensuring fire resistance, taking into account the production accuracy of the wall panel and the accuracy of the foundation on the frame side. In many cases, the space of the part 5 is set to about 1 mm.

  Further, the engraved portion 25 has a bottom surface portion 25a and a side surface portion 25b rising from the bottom surface portion 25a. By design, the size of the engraved portion 25 is formed such that there is a gap between the viscoelastic body 27 and the side surface portion 25b, and the viscoelastic body 27 is not bonded to the side surface portion 25b of the engraved portion 25. It is adhered only to the bottom surface portion 25a of the engraved portion 25. When the viscoelastic body 27 is bonded over the entire surface of the engraved portion 25, the vibration damping function of the viscoelastic body 27 is exhibited mainly only in a part exposed from the engraved portion 25. However, in the wall panel structure 1D, the viscoelastic body 27 is bonded only to the bottom surface portion 25a of the engraved portion 25 and is not bonded to the side surface portion 25b. Since the vibration energy can be consumed as heat energy by displacement, the damping performance is improved.

  Similarly to the first and second embodiments, the wall panel structure 1D according to the present embodiment can securely clamp the viscoelastic body 27 without being in an unstable clamping state. Furthermore, the viscoelastic body 27 can be directly confirmed visually from one side (the room A2 side) where the viscoelastic body 27 is sandwiched. Accordingly, it is possible to easily confirm the sandwiched state of the viscoelastic body 27, and whether the predetermined damping performance corresponding to the bonding area of the viscoelastic body 27 sandwiched on the small edge surface 23 of the wall panel 22 can be exhibited. It becomes easy to confirm whether or not. As a result, it is possible to reliably obtain a predetermined attenuation performance according to the adhesion area of the viscoelastic body 27 sandwiched between the small edge surfaces 23 of the wall panel 22.

  In particular, since the present embodiment has a carved portion (concave portion) 25 that accommodates the viscoelastic body 27, the gap between the joint portions 5, that is, the empty space between the small-mouthed surfaces 23 is made as narrow as possible, thereby reducing the joint portion 5. The viscoelastic body 27 can be increased in size by a volume that can be accommodated in the engraved portion 25 while ensuring the fireproof and fireproof performance of the wall panel 22. Considering the allowable shear deformation amount and shear adhesion resistance of the viscoelastic body 27 with respect to the amount of movement with respect to the longitudinal direction of the facet surface 23, it becomes easy to determine a thickness that does not cause breakage, and damping performance It is possible to facilitate a comprehensive design for improving the quality.

  In the case of the wall panel structure 1D according to the present embodiment, the adhesion area of the viscoelastic body 27 is increased by attaching the wall panel 22 to the building frame B by the same construction method as the construction method according to the first embodiment. Therefore, a predetermined damping performance corresponding to the adhesion area of the viscoelastic body 27 sandwiched between the small edge surfaces 23 of the wall panel 22 can be reliably obtained.

  The present invention is not limited to the above embodiment, and can be suitably used for a wall panel structure capable of improving the attenuation performance of a building.

It is a perspective view of the wall panel structure which concerns on 1st Embodiment of this invention. It is a perspective view which expands and shows the joint part of a wall panel structure. It is sectional drawing which expands and shows the joint part of a wall panel structure. It is a perspective view which shows an example which applied the wall panel structure which concerns on this embodiment to the outer periphery of a building frame. It is a figure which compares and shows the wall panel structure which concerns on this embodiment, and the comparative example which clamped the viscoelastic body on both sides which pinched | interposed this real part, (a) is a cross section of the wall panel structure which concerns on this embodiment It is a figure, (b) is sectional drawing of the wall panel structure which concerns on a comparative example. It is a perspective view which shows the viscoelastic body arrange | positioned at the small edge surface of a wall panel. It is a figure which shows the state which has moved and moved so that adjacent wall panels may approach. It is a figure which shows the state which pushes the adjacent wall panel and is building in. It is sectional drawing which expands and shows the joint part of the wall panel structure which concerns on 2nd Embodiment of this invention. It is sectional drawing which expands and shows the joint part of the wall panel structure which concerns on 3rd Embodiment of this invention.

Explanation of symbols

  1A, 1B, 1C, 1D ... Wall panel structure, 2, 12, 22, 200, 210 ... Wall panel, 220 ... Wall panel (other wall panel), 2a ... Corner, 3, 13, 23 ... Small facet, 3b, 13c, 23c ... convex real part (real structure), 3c, 13d, 23d ... concave real part (real structure), 3e ... margin part, 5 ... joint part, 7, 17, 27 ... Viscoelastic body, 25 ... carved portion (concave portion), 25a ... bottom surface portion, 25b ... side surface portion, D ... thickness direction of wall panel, A1 ... outside building housing, A2 ... interior of building housing, B ... building housing.

Claims (6)

In the wall panel structure attached to the building frame so that the small edge surfaces of adjacent wall panels are abutted to form a joint portion having an actual structure, and the wall panels are movable in the longitudinal direction of the small edge surface,
A viscoelastic body is sandwiched between the facets of the wall panel at the joint,
The wall panel structure according to claim 1, wherein the viscoelastic body is arranged with a deviation in a thickness direction of the wall panel with respect to the actual structure.   2. The wall panel structure according to claim 1, wherein the viscoelastic body is disposed so as to be biased to only one side in a thickness direction of the wall panel with respect to the actual structure. It is attached to the outer periphery of the building frame,
The wall panel structure according to claim 2, wherein one side of the wall panel in which the viscoelastic bodies are arranged in a biased manner is an indoor side of the building housing.   The recessed part which accommodates the said viscoelastic body is formed in at least one said fore edge surface among the fore edge surfaces of the said adjacent wall panel, The Claim 1 characterized by the above-mentioned. Wall panel structure. The recess has a bottom surface and a side surface rising from the bottom surface,
The wall panel structure according to claim 4, wherein the viscoelastic body is bonded only to the bottom surface portion. It is a construction method of a wall panel that is attached to a building frame so that the small facets of adjacent wall panels form joints via a viscoelastic body,
A corner formed at the lower end of the small edge of the other wall panel is attached to the blank of the wall panel that is attached to the building frame, and the viscoelastic body is disposed leaving a blank at the lower part of the small edge. A method for constructing a wall panel, wherein the other wall panel is attached to the building frame after being brought close to or in contact with each other.

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