JP2006132168A - Light-weight cellular concrete composite floor panel joint structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure of a composite floor panel capable of easily sealing a clearance between panels over the whole periphery and improving sound insulation property of light-weight shock sound when spreading the ALC composite floor panel. <P>SOLUTION: This floor structure is constituted by spreading a plurality of composite floor panels constituted by arranging plywood 2 on both front and rear faces of the ALC panel 1. Channels 4 are formed on a long side side face and a short side side face of the ALC panel 1, and one fitting plate 5 is inserted into opposing channels 4, 4 of adjacent ALC panels 1. Both of the channel 4 on the long side side face and the channel 4 on the short side side face of the ALC panel 1 may be formed on a front face side or a rear face side of the ALC panel 1, and one and the other of the channels may be formed on the front face side and the rear face side, respectively. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a joining structure of an ALC composite floor panel in which plywood is disposed on both front and back surfaces of a lightweight aerated concrete (ALC) panel, which is laid on a joist of a building and joined. .

  The upper and lower floors of a house are divided into a ceiling and a floor. Generally, the floor is basically constructed by laying wooden plywood on the joists and fixing them, and then installing flooring and carpeting finishing materials. Yes. Further, in order to improve the sound insulation and fire resistance of the floor, it is generally performed to combine a sound insulation sheet, a gypsum board and the like.

  In recent years, ALC composite floor panels in which plywoods are arranged on both front and back surfaces of ALC panels tend to be frequently used as floor materials excellent in sound insulation, fire resistance and workability. The ALC composite floor panel is formed in advance by bonding plywood to the front and back sides of the ALC with an adhesive at the factory, or by placing plywood on the front and back sides of the ALC panel at the construction stage, and screws or nails from the upper plywood to the ALC. The panel and the lower plywood are passed through and fixed directly to the joists.

  The standard dimensions of this ALC composite floor panel are generally 606 mm in width and 1820 mm in length, but there are cases where the width is 455 mm or 500 mm and the length is 2000 mm due to meter module compatibility and layout. The general thickness of each member is less than 75 mm for the ALC panel, and 4 mm to 15 mm for the plywood disposed on both the front and back surfaces. This ALC composite floor panel can be fixed to the joist with screws or nails, and the floor is completed by installing a finishing material such as flooring on the joist.

  When laying and joining multiple ALC composite floor panels, gaps often occur between adjacent panels due to the effects of dimensional errors that occur during the manufacture of ALC composite floor panels and dimensional errors that occur when building structures are built. . When there is a gap between the ALC composite floor panels, the sound insulation against light impact sound and the like is lowered. Therefore, joint tape or the like is attached to the gap before finishing material construction. However, this sealing work has to be performed on the entire circumference of the ALC composite floor panel. Therefore, it is very troublesome and the effect of improving the sound insulation is small.

  Since such a sound insulation problem is a defect that occurs also in other flooring materials, various improvement methods have been proposed. For example, in Japanese Patent Application Laid-Open Nos. 11-131717 and 2001-348959, recesses and projections are formed on the side surfaces of a wooden floor material, and the gaps between the floor materials are closed by loosely fitting them. At the same time, it is disclosed to absorb expansion and contraction due to wet drying. Japanese Patent Application Laid-Open No. 2003-278366 discloses a structure in which the side surfaces of a panel are processed into a continuous concavo-convex shape or a wavy shape and are joined to each other without using a nail or an adhesive. Furthermore, Japanese Patent Application Laid-Open No. 2004-115707 discloses a method in which a concave portion and a convex portion are formed on the side surface of an ALC panel and the gap is bonded with an adhesive.

  However, since reinforcing reinforcing bars are arranged in a net shape inside the ALC panel with a thickness of less than 75 mm used for flooring, when the mechanical cutting described in each of the above publications is performed using a router bit or a saw blade, etc. The reinforcing reinforcing bar becomes an obstacle to processing because the thickness of the ALC panel is thin. Therefore, it is necessary to cut the internal reinforcing bars with a hand tool such as a chisel, but this is very laborious and uneconomical.

Japanese Patent Laid-Open No. 11-131771 JP 2001-348959 A JP 2003-278366 A JP 2004-115707 A

  In view of the above-described conventional circumstances, the present invention requires an effort such as attaching a tape to seal a gap between panels in an ALC composite floor panel joint structure in which ALC composite floor panels are laid and joined. Therefore, an object of the present invention is to provide an ALC composite floor panel joining structure that can easily seal a gap between panels over the entire circumference and can improve sound insulation such as lightweight impact sound.

  In order to achieve the above object, an ALC composite floor panel joint structure provided by the present invention is a floor structure in which a plurality of composite floor panels in which plywood is arranged on both the front and back sides of an ALC panel are laid and joined. Concave grooves are formed on the front side and / or the back side where the reinforcing bars on the long side surface and the short side surface do not exist, and one fitting plate is inserted into the opposing concave groove of the adjacent ALC panel. It is characterized by that.

  In the ALC composite floor panel joining structure of the present invention, the thickness of the ALC panel is less than 75 mm, and the position of the groove is 0 to 10 mm from the front surface or the back surface of the panel. The height of the groove in the thickness direction is preferably +0.1 to +1.0 mm of the thickness of the fitting plate, and the depth of the groove in the width direction of the panel is preferably 5 to 50 mm. The thickness of the fitting plate is preferably 4.0 to 10.0 mm.

  Moreover, in the ALC composite floor panel joining structure of the present invention, the groove on the long side surface and the groove on the short side surface of the ALC panel are both formed on the front side or the back side of the panel, Alternatively, it is preferable that one is formed on the front side of the panel and the other is formed on the back side.

  According to the present invention, even an ALC composite floor panel using an ALC panel having a thickness of less than 75 mm can easily seal the gap between the panels when laid, over the entire circumference of the panel, thereby reducing the weight of the impact. It is possible to provide a joining structure of an ALC composite floor panel with improved sound insulation such as sound.

  As shown in FIG. 1, the ALC composite floor panel of the present invention has plywood 2 disposed on both front and back surfaces of the ALC panel 1 (the back plywood is not shown). A concave groove 4 is formed. When the ALC composite floor panel is laid, a gap between the adjacent ALC panels 1 and 1 can be obtained by inserting a single fitting plate 5 into the opposing concave grooves 4 and 4 of the adjacent ALC panels 1 and 1. 1a is easily and completely sealed over the entire circumference, and the sound insulation of the floor can be improved and improved.

  As the fitting plate 5 to be inserted into the concave groove 4, a rigid plate is preferable for improving the sound insulation, and for example, wood, resin, ceramics and the like are preferable. Further, in order to improve the sound insulation, it is necessary to seal all the gaps 1 a between the adjacent ALC panels 1 and 1 with the fitting plate 5, so that the groove 4 is adjacent to at least another ALC panel 1. The long side surface and the short side surface may be formed on the entire periphery of the ALC panel 1. In addition, the concave groove 4 is formed by machining at a position where there is no reinforcing bar 6 on the front side or the back side of the ALC panel 1.

  In particular, in the ALC panel 1 for flooring having a thickness of less than 75 mm, the position and size of the groove 4 are limited. Specifically, as shown in FIG. 1, the position 4d of the groove 4 from the front or back surface of the ALC panel 1 is preferably in the range of 0 to 10 mm. Note that the position 4 d of the groove 4 being 0 mm means that the groove 4 is exposed on the front or back surface of the ALC panel 1. When the position 4d of the groove 4 exceeds 10 mm from the front or back surface of the ALC panel 1, or when the total height of the groove height 4h of the groove 4 to be described later exceeds 10 mm, the internal reinforcing steel bars 6 are obstructed by machining. This is because the workability of groove formation is reduced because manual processing is required.

  Further, the groove height 4h of the concave groove 4 in the thickness direction of the ALC panel 1 is preferably in the range of +0.1 to +1.0 mm of the plate thickness 5h of the fitting plate 5. When the groove height 4 h of the recessed groove 4 is less than +0.1 mm of the plate thickness 5 h of the fitted plate 5, it is difficult to insert the fitted plate 5 into the recessed groove 4. From the viewpoint of workability, it is preferable that the fitting plate 5 is loosely fitted into the groove 4. However, when the groove height 4 h of the groove 4 exceeds +1.0 mm from the plate thickness 5 h of the fitting plate 5, Since the front-end | tip part of the fitting board 5 droops, fitting to the ditch | groove 4 of the ALC panel 1 which opposes becomes difficult, and workability | operativity falls.

  Furthermore, the groove depth 4w in the width direction of the ALC panel 1 of the concave groove 4 is preferably 5 to 50 mm, and more preferably 10 to 30 mm. When the groove depth 4w of the concave groove 4 is less than 5 mm, the fitting plate 5 easily falls off from the concave groove 4 during construction, so that the workability is lowered. On the contrary, if the groove depth 4w of the groove 4 exceeds 50 mm, the diameter of the router bit used for groove formation becomes too large, and the operation of forming the groove 4 becomes inefficient.

  The plate thickness 5h of the fitting plate 5 inserted into the concave groove 4 is preferably 4.0 to 10.0 mm. When the thickness 5h of the fitting plate 5 is less than 4.0 mm, the deflection becomes large when the fitting plate 5 is held, and it becomes difficult to fit into the concave groove 4. If the thickness 5h of the fitting plate 5 exceeds 10.0 mm, the reinforcing reinforcing bars 6 obstruct the formation of the groove 4 depending on the position 4d of the groove 4 and the groove height 4h. Therefore, the workability is reduced because manual machining is necessary.

  The plate width 5w of the fitting plate 5 is not particularly limited as long as it can be loosely fitted into the opposing concave grooves 4 and 4 of the adjacent ALC panels 1 and 1, but is preferably in the range of 15 to 50 mm. This is because if the plate width 5w of the fitting plate 5 is less than 15 mm, the fitting plate 5 easily falls off from the groove 5 during construction, and conversely if it exceeds 50 mm, the fitting operation of the fitting plate 5 becomes difficult.

  The concave grooves formed on the long side surface and the short side surface of the ALC panel 1 can both be formed on either the front side or the back side of the ALC panel. Further, either one of the long side surface and the short side surface can be formed on the front surface side of the ALC panel 1, and the other groove can be formed on the back surface side. In this case, since the fitting plate inserted in the groove on the long side surface and the fitting plate inserted in the groove on the short side surface do not collide with each other at the corner of the ALC panel, the gap between the ALC panels should be completely shielded. Sound insulation is further improved.

  In addition, the ALC composite floor panel in the present invention is formed by previously forming a concave groove on the side surface of the ALC panel in a factory or the like, and bonding a plywood to the front and back surfaces of the ALC with an adhesive. Alternatively, an ALC panel with a groove on the side surface is manufactured in advance at a factory, and plywood is placed on both the front and back sides of the ALC panel at the stage where it is applied to the floor, and screws or nails are passed through the plywood and the ALC panel. By driving into joists, it can be combined simultaneously with fixation.

  Using an ALC panel having a width of 606 mm, a length of 1820 mm, and a thickness of 37 mm, as shown in Examples 1 to 7 and Comparative Examples 1 to 8 below, the entire side surface of the surface side is recessed using an NC processing machine and router bits. A groove was formed. However, when the reinforcing bar inside the ALC panel hinders the processing of the concave groove, specifically, in Comparative Example 2 and Comparative Example 7, the concave bar was formed after removing the reinforcing bar with a hand tool.

  Specifically, in FIG. 1, in Example 1, the groove position 4d is 0 mm from the surface of the ALC panel 1, that is, from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, and the groove height 4h is 5.1 mm. The groove width 4w was 20 mm. The fitting plate 5 had a thickness 5h of 5.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  In Example 2, the groove position 4d was 4.9 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 5.1 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a thickness 5h of 5.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  In Example 3, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 6 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a thickness 5h of 5.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  In Example 4, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the front side, the groove height 4h was 5.1 mm, and the groove width 4w was 5 mm. The fitting plate 5 had a thickness 5h of 5.0 mm, a plate width 5w of 9 mm, and a length of 1828 mm for the long side fitting plate and 596 mm for the short side fitting plate.

  In Example 5, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 5.1 mm, and the groove width 4w was 50 mm. The fitting plate 5 had a plate thickness 5h of 5.0 mm, a plate width 5w of 90 mm, and a length of 1900 mm for the long side fitting plate and 506 mm for the short side fitting plate.

  In Example 6, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 4.1 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a plate thickness 5h of 4.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  In Example 7, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 10.0 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a plate thickness 5h of 9.9 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  On the other hand, Comparative Example 1 is a conventional method (the gap between ALC panels is sealed with a general joint tape), and the same ALC panel as described above was used, but no concave grooves were formed. In Comparative Example 2, the groove position 4d was 5.0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 5.1 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a thickness 5h of 5.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  In Comparative Example 3, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 5.0 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a thickness 5h of 5.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  In Comparative Example 4, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 6.1 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a thickness 5h of 5.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  In Comparative Example 5, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 5.1 mm, and the groove width 4w was 4 mm. The fitting plate 5 had a plate thickness 5h of 5.0 mm, a plate width 5w of 7 mm, and a length of 1826 mm for the long side fitting plate and 598 mm for the short side fitting plate.

  In Comparative Example 6, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 5.1 mm, and the groove width 4w was 51 mm. The fitting plate 5 had a plate thickness 5h of 5.0 mm, a plate width 5w of 90 mm, and a length of 1898 mm for the long side fitting plate and 504 mm for the short side fitting plate.

  In Comparative Example 7, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 3.1 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a plate thickness 5h of 3.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate.

  In Comparative Example 8, the groove position 4d was 0 mm from the bonding interface between the plywood 2 and the ALC panel 1 on the surface side, the groove height 4h was 10.1 mm, and the groove width 4w was 20 mm. The fitting plate 5 had a plate thickness 5h of 10.0 mm, a plate width 5w of 30 mm, and a length of 1840 mm for the long side fitting plate and 566 mm for the short side fitting plate. The conditions of the recessed groove and the conditions of the fitting plate in Examples 1 to 7 and Comparative Examples 1 to 8 are shown in Table 1 below.

  The above-mentioned ALC panels of Examples 1 to 7 and Comparative Examples 1 to 8 were bonded with a 4 mm thick hardwood plywood on the front surface and a 12 mm thick softwood plywood on the back surface, respectively, with an adhesive. ALC composite floor panels were manufactured. The ALC composite floor panel was laid as shown in FIGS. 2 to 3 to form a floor structure. That is, the ALC composite floor panel in which the plywoods 2 and 3 are bonded to both the front and back sides of the ALC panel 1 is arranged on the joist 7 having a width of 38 mm and a thickness of 235 mm arranged at intervals of 910 mm, and the plywood 3 of the conifer is on the joist 7 side. In addition, the gap 1a between the ALC composite panels was 1 mm.

  In that case, the fitting board 5 which consists of hardwood plywood was inserted in the ditch | groove 4 which the adjacent ALC panel 1 opposes. In this embodiment and the comparative example, both the long side surface and the short side surface concave grooves of the ALC panel 1 are formed on the surface side. Therefore, the insertion of the fitting plate 5 into the concave groove 4 is shown in FIG. As shown, the short side fitting plate 5b inserted in the concave groove 4b on the short side surface is fitted between the long side fitting plates 5a and 5a inserted in the concave groove 4a on both long side surfaces. As a result, the gap can be sealed over the entire circumference of the ALC panel 1.

  Next, the ALC composite floor panel laid as described above was directly fixed to the joists 7 with screws 8, and a wooden flooring 9 was disposed as a finishing material on the hardwood plywood 2 on the surface side. Then, the hanging wood 10 having a width of 38 mm and a thickness of 43 mm is attached to the joists 7 at intervals of 455 mm, and a gypsum board having a thickness of 9.5 mm, a width of 455 mm, and a length of 910 mm is attached to the field edge 11 fixed to the lower end of each hanging wood 10. 12 was fixed, and a partition structure of a floor and a ceiling separating the upper floor and the lower floor was constructed.

  With respect to the joined structures of the obtained ALC composite floor panels of Examples 1 to 7 and Comparative Examples 1 to 8, the sound insulation level of lightweight impact sound was measured according to JIS A 1418. Moreover, the workability of forming the concave groove was determined as a failure when the time required for forming the groove per panel was measured and exceeded 5 minutes. For the workability of construction, lay an ALC composite floor panel over the entire floor space of 6 tatami mats, insert a fitting plate (except for Comparative Example 1), measure the time required for screwing, 80 minutes If it exceeded, it was judged as rejected. The obtained results are shown in Table 2 below.

  As can be seen from the above results, the joining structures of Examples 1 to 7 are excellent in all evaluation items of the groove forming property, the floor structure workability, and the sound insulating property. On the other hand, Comparative Example 1 is a conventional example in which the gap between the ALC panels is sealed with joint tape, and the sound insulation property of lightweight impact sound is insufficient.

  Further, in Comparative Example 2, the sum of the groove position 4d and the groove height 4h of the groove 4 exceeds 10 mm, and the reinforcing reinforcing bar 6 becomes an obstacle, so the workability of forming the groove is inferior. In Comparative Example 3, since the groove height 4h of the recessed groove 4 is the same as the plate thickness 5h of the fitting plate 5, it is difficult to fit the fitting plate 5 and the workability is poor. In Comparative Example 4, since the groove height 4h of the recessed groove 4 is as large as +1.1 mm of the thickness 5h of the fitting plate 5, the tip of the fitting plate 5 inserted into the recessed groove 4 hangs down, and the adjacent ALC panel 1 is opposed. It becomes difficult to fit into the groove 4 to be performed, and the workability is inferior.

  In Comparative Example 5, since the groove width 4w of the recessed groove 4 is 4 mm and is shallow, the fitting plate 5 is easily dropped during construction, and the workability is inferior. In Comparative Example 6, the groove width 4w of the groove 4 exceeds 50 mm, and the router bit becomes too large, so that the workability of forming the groove is inferior. In Comparative Example 7, since the thickness 5h of the fitting plate 5 is as thin as less than 4 mm, it is difficult to insert the fitting plate 5 into the concave groove 4, and the workability is poor. In Comparative Example 8, the thickness 5h of the fitting plate 5 is 10 mm, but the groove height 4h of the corresponding concave groove 4 exceeds 10 mm, so that the reinforcing reinforcing bars 6 become an obstacle to the formation of the concave groove 4, and the groove The workability of forming is inferior.

It is general | schematic sectional drawing which shows the ALC composite floor panel and fitting board in this invention. It is a schematic perspective view which shows the division structure which used the ALC composite floor panel for the flooring. It is general | schematic sectional drawing which shows the state which laid the ALC composite floor panel. It is a schematic top view which shows the insertion state of the long side fitting board and the short side fitting board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ALC panel 1a Clearance 2, 3 Plywood 4 Concave groove 4a Concave groove of long side surface 4b Concave groove of short side surface 5 Fitting plate 5a Long side fitting plate 5b Short side fitting plate 6 Reinforcement reinforcing bar 7 joist 8 screw 9 flooring 10 Suspended wood 11 Field edge 12 Gypsum board

Claims (4)

  A floor structure in which a plurality of composite floor panels in which plywood is arranged on both the front and back sides of a lightweight cellular concrete panel is laid and joined, and the reinforcing steel bars on the long side surface and the short side surface of the lightweight cellular concrete panel do not exist A lightweight cellular concrete composite floor panel joining structure characterized in that a concave groove is formed on the back surface side, and one fitting plate is inserted into the opposing concave groove of the adjacent lightweight cellular concrete panel.   The thickness of the lightweight cellular concrete panel is less than 75 mm, the position of the groove is 0 to 10 mm from the front or back surface of the panel, and the groove height of the groove in the thickness direction of the panel is a fitting plate 2. The lightweight cellular concrete composite floor according to claim 1, wherein the plate thickness is +0.1 to +1.0 mm, and the groove depth of the groove in the width direction of the panel is 5 to 50 mm. Panel joint structure.   The lightweight cellular concrete composite floor panel joining structure according to claim 1 or 2, wherein a thickness of the fitting plate is 4.0 to 10.0 mm. Both the groove on the long side surface and the groove on the short side surface of the lightweight cellular concrete panel are formed on the front side or the back side of the panel, or one side is on the front side of the panel and the other side is the back side. The lightweight cellular concrete composite floor panel joining structure according to claim 1, wherein the lightweight cellular concrete composite floor panel joining structure is formed on a side.

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