JP2010275694A - Mounting structure for concrete panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure suitable for a concrete panel such as, for example, an ALC (Aerated Light-weight Concrete) panel and for constructing a roof or a floor using this concrete panel easily and inexpensively, preventing adhesive from sticking to worker's clothes, a tool or the like, and preventing the surrounding environment from becoming polluted when constructing the roof or the floor using this concrete panel. <P>SOLUTION: This mounting structure for this concrete panel is constituted by arranging and laying a plurality of concrete panels 1 each having a substantially rectangular surface on a structural skeleton such as a beam or the like substantially horizontally and mounting and supporting each panel on the structural skeleton by a fixing and supporting means provided between adjacent panels on the structural skeleton. In this mounting structure, a projecting part 11 and a recessed part 12 of an actual solid joint 10 provided on long side headers adjacent to each other in the direction of width of each panel 1 are mutually engaged, and only a substantially central part in the longitudinal direction of the panel in the clearance S formed between the projecting part 11 and the recessed part 12 is filled with the adhesive 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mounting structure for a concrete panel such as an ALC (lightweight cellular concrete) panel. More specifically, the present invention relates to a mounting structure in the case where the concrete panels as described above are laid out on a structural frame such as a building frame in a substantially horizontal manner as a roof or flooring.

  2. Description of the Related Art Conventionally, concrete panels such as ALC panels are widely used as roofs, floor materials, outer walls, partition walls, or the like of buildings such as steel structures. In addition, this type of concrete panel is generally formed in a rectangular plate shape on the surface of the panel, and when they are used as a roof or flooring material, for example, on a structural frame such as a beam as in Patent Document 1 below. A plurality of panels are laid side by side horizontally, and the joint reinforcement is inserted and held in a support bracket fixed by welding or the like on the structural frame between the adjacent panels, and the joint reinforcement is placed above the long side edge of the adjacent panel. Conventionally, a so-called wet method of fixing each panel by filling mortar in the groove and the joint between the short sides of the adjacent panels is inserted in the groove provided in I came.

  However, the above-mentioned wet construction method takes time and labor to unload the joint mortar kneading equipment and materials to the construction site, and the mortar filling work into the joint is also a manual work using a trowel, so a lot of work is required for the work However, it takes time and is inefficient and there are problems such as increased construction costs. Therefore, in recent years, a dry construction method that does not use mortar has been studied. For example, as disclosed in Patent Document 2 below, a beam placed on the steel beam is positioned between the end portions on the side of the panel long side adjacent to the panel longitudinal direction. A rod-shaped bracket is attached on the top of the rod-shaped bracket by welding or the like, and a female screw hole formed in the disk-shaped hardware is screwed into a male screw formed on the top of the rod-shaped bracket, and the long side is between the disk-shaped hardware and the beam. A method has been proposed in which the end on the fore edge side is fixed.

  Since the dry construction method as described above is a configuration that fixes only both ends in the longitudinal direction of the panel, the joint in the long side direction where the panel is not supported is against a concentrated load due to a suspended ceiling or human walking or jumping, etc. There is a possibility that the finishing material such as the waterproof material or the SL material may be damaged or peeled off, and in order to prevent this, it is desirable to have a structure in which no step is generated between the joints. In addition, considering fire resistance, cover the joints with a fire-resistant joint material or prevent joints such as actual or sprinkling so that there is no gap through which flames pass through the joints due to deformation of the panel due to heat, etc. It is desirable to adopt.

  For example, the actual joint specifications are generally used for ALC panels used for outer walls and partition walls, but the actual joints of the ALC panel have a large processing error in manufacturing, and the convex parts (male) and concave parts ( It is necessary to design with a gap for fitting with female. In addition, the ALC base material contains bubbles and is relatively fragile. If the corner on the tip side of the convex portion is processed at a right angle or an acute angle, it may be lost during transportation or construction. Therefore, it is desirable to form the entire convex part in a trapezoidal cross section so that the angle of the convex part of the actual joint becomes an obtuse angle, and to form the concave part in a slightly larger cross sectional trapezoid accordingly.

  However, when the roof and floor are constructed by butting together the panels having the actual joint as described above, since there is a gap between the convex portion and the concave portion of the actual joint, just fitting them together, If the load is concentrated on one of the panels, there may be a step between the joints of adjacent panels, or there may be a collision noise between the convex and concave parts of this joint when walking on the floor. There is. Therefore, in Patent Document 3 below, it is proposed to bond and fix adjacent panels by filling the actual joint of the ALC panel with an adhesive and solidifying it. In particular, in the above-mentioned document 3, an adhesive is interposed over the entire length in the longitudinal direction of the real joint provided along the long side edge of the floor or roof panel. It has been proposed to apply an adhesive to the sides.

JP-A-2-248555 JP 2002-339492 A JP 2004-115707 A

  However, as in the above-mentioned Patent Document 3, the one in which the adhesive is applied over the entire length in the longitudinal direction of the joint portion of the long side edge has a problem that the filling amount of the adhesive increases and the construction cost increases. Also, since the adhesive is applied while laying the panel, applying the adhesive to the entire length of the panel in the longitudinal direction causes the adhesive to adhere to clothes, tools, etc. during laying, etc. In addition, it was necessary to pay attention to prevent it. Furthermore, in the past, the actual joint shape specific to concrete panels such as ALC panels, which is based on the fitting dimension error and obtuse angle of the actual joint, has not been taken into account, and the intended purpose / effects depend on such shape. It was necessary to reconsider the specifications that demonstrate the standards.

  The present invention has been proposed in view of the above-described problems. When a roof or floor is configured using a concrete panel such as the above-described AlC panel, the construction can be easily and inexpensively performed by an operator. An object of the present invention is to provide a mounting structure that is less likely to cause adhesives to adhere to clothes, tools, etc., or to contaminate the surrounding environment, and that is suitable for a concrete panel such as an ALC panel.

  In order to achieve the above object, the concrete panel mounting structure according to the present invention has the following configuration. That is, a plurality of concrete panels having a substantially rectangular surface are laid on a structural frame such as a beam approximately horizontally, and each panel is attached to the structural frame by fixed support means installed between adjacent panels on the structural frame. It is a mounting structure for a concrete panel that is supported, and is configured to engage a convex portion and a concave portion of the actual joint provided in the long side edge adjacent to each panel in the width direction, and the convex portion The adhesive is filled only in the substantially central portion in the panel longitudinal direction in the gap formed between the recesses.

  As described above, the concrete panel mounting structure according to the present invention is substantially in the longitudinal direction of the panel in the gap formed between the convex portion and the concave portion of the actual joint provided in the long side edge of the panel adjacent in the width direction. Since the adhesive material is filled only in the central portion, it is possible to fix the adjacent panels in the width direction with a simple structure, easily and inexpensively. Further, even when the load is concentrated on any of the adjacent panels, there is no joint level difference that causes defects such as cracks and peeling in the waterproof finish and the self-leveling material finish. Furthermore, by filling the joints with the adhesive only at the approximate center in the longitudinal direction of the panel, the amount of adhesive used can be reduced, cost reduction can be expected, and labor for filling the adhesive can be reduced. Is possible.

  In addition, the filling length of the adhesive material in the gap is appropriate, but is preferably in the range of 200 to 500 mm. The filling amount of the adhesive into the gap is also appropriate. Preferably, the filling amount per unit length in the gap is set to 1.5 to 2.5 of the volume per unit length of the gap. It is desirable to be within the double range.

The perspective view which shows one Embodiment of the attachment structure of the concrete type panel by this invention. (A) is a top view of the attachment support part to the structural housing of the said panel, (b) is the vertical side view, (c) is an exploded longitudinal cross-sectional view which shows an attachment state. (A) is a partial enlarged vertical front view of the state where the panel is attached to the structural housing, and (b) is a partial enlarged view thereof. (A) And (b) is explanatory drawing which shows an example of a structure of the joint part of the said panel. The perspective view of the state which has filled the concrete-type panel with the adhesive material.

  Hereinafter, a concrete panel mounting structure according to the present invention will be specifically described based on an embodiment shown in the drawings.

  In the embodiment shown in FIG. 1, the present invention is applied to a floor panel mounting structure when a floor is formed using an ALC panel as a concrete panel. In particular, in the case of the figure, a structural frame of a building such as a building ( The ALC panel 1 having a surface (planar) rectangle on the upper surface of the beam B which is a building frame) is arranged so that the longitudinal direction of the ALC panel 1 is substantially perpendicular to the longitudinal direction of the beam B. Are placed on adjacent beams B and B, and a large number of the panels 1 are arranged in the longitudinal direction of the beams B. In other words, the panels 1 and 1 that are adjacent to each other in the longitudinal direction of the panel are placed and fixed on the beam B in a state where the ends on the short side edge face each other, and a large number are arranged in the panel width direction (short direction). A floor surface is formed by mounting.

  Although the fixing method (attachment means) to the beam B of each panel 1 is appropriate, this embodiment is attached and supported by a dry construction method, and in the case of the drawings, as shown in FIGS. 1 and 2 A small block-shaped fixing bracket 2 fixed to the upper surface of the beam B by welding or the like between the ends on the short side edge side adjacent in the panel longitudinal direction, and a bolt 3 screwed into a female screw hole 2a formed in the fixing bracket 2 And the bolt 3 is inserted and supported by the beam B with the oval washer 4 that presses and fixes the upper surface of the end portion on the adjacent short side edge side.

  As the bolt 3, a countersunk bolt is used in the present embodiment, and a dish-shaped (inverted truncated cone) head 3 b is integrally formed at the upper end of the shaft part 3 a having the male screw of the bolt 3. In addition, an engagement recess 3c for engaging and rotating a tool or the like on the upper surface of the head 3b is provided. In this embodiment, the engaging recess 3c is provided with a square hole for engaging a square bar-shaped tool or the like bent in an L shape, in particular, in the case of FIG. A triangular hole, a hexagonal hole, etc. may be sufficient, for example, you may make it provide engagement recessed parts, such as a cross hole slit which engages what is called a cross driver and a flat screwdriver.

  On the other hand, a bolt insertion hole 4a for inserting the bolt 3 is formed in a substantially central portion of the washer 4, and a dish-shaped head 3b of the bolt 3 is inserted above the bolt insertion hole 4a. An inverted frustoconical recess 4b for fitting is provided. Further, a concave groove 1a which is equal to or slightly deeper than the thickness of the washer 4 is formed on the upper surface of the end on the short side edge side of both ends in the longitudinal direction of the panel on which the washer 4 is placed. By disposing the washer 4 inside, the washer 4 does not protrude above the upper surface of the panel 1. In the case of the figure, the planar shape of the concave groove 1a is formed in a flat circular shape in which the end side of each panel is omitted. However, the planar shape is substantially similar to the planar shape of the almost half of the oval washer 4. For example, it may be formed in a plane U shape or a horseshoe shape.

  In fixing each panel 1 to the beam B using the fixing bracket 2, the bolt 3, and the washer 4 configured as described above, either one or both of the ends on the side of the adjacent short side edge are attached to the beam B. Before mounting on the upper surface of the beam B, the fixing bracket 2 is fixed to a predetermined position on the upper surface of the beam B by welding or the like. Then, on the upper surface of the beam B on both sides of the fixing bracket 2, as shown in FIG. 2 (c), the end portion on the short side edge side of the adjacent panel 1 is placed, and then the adjacent end portion is straddled. The washer 4 is accommodated in the groove 1a formed on the upper surfaces of the two panels. Next, the bolt 3 may be inserted into the bolt insertion hole 4a formed in the washer 4, and the male screw at the lower end of the bolt 3 may be screwed into the female screw hole 2a of the fixing bracket 2 and tightened and fixed with the above-described tool or the like. Thereby, the head 3b of the bolt 3 is located in the recess 4b of the washer 4, and the upper surfaces of the bolt 3 and the washer 4 are located at a height substantially equal to or lower than the upper surfaces of the two panels 1. Thus, the two panels 1 are sandwiched between the washer 4 and the upper surface of the beam B.

  In addition, as shown in FIG. 3 (a), the actual joint 10 including a convex portion 11 and a concave portion 12 that engages with the long side edge of each panel 1 in the width direction is provided. The adhesive 5 is filled in the gap S formed between the convex portion 11 and the concave portion 12. Although the shape of the convex part 11 and the concave part 12 is appropriate, in the present embodiment, an ALC panel is used as the panel 1, and the base material is relatively fragile with bubbles as described above. As shown in (b), the angle θ1 of the corner on the tip side of the convex portion 11 is formed in a trapezoidal cross section, and the cross sectional shape of the concave portion 12 is also formed in a slightly larger trapezoid accordingly. ing.

  In addition, although the magnitude | size of the space | interval dimension t1, t2 between the said convex part 11 and the recessed part 12 shown to Fig.4 (a) is appropriate, when an ALC panel like this embodiment is used, it is normal. What is necessary is just to form substantially the same as the space | interval dimension between the convex part 11 and the recessed part 12 which are formed in this ALC panel. Specifically, for example, the distance t1 between the top surface 11a of the convex portion 11 and the bottom surface 12a of the concave portion 12 shown in FIG. 3 (a), and between the side surface 11b of the convex portion 11 and the side surface 12b of the concave portion 12 are illustrated. What is necessary is just to design the space | interval dimension t2 to about 2-3 mm respectively. This is because the actual joint 10 of the ALC panel as described above is formed by cutting the autoclave-cured panel with a rotary blade. Depending on the degree of wear, etc., the depth of the concave portion 12 may often be shallower than the height of the convex portion 11, and in such a case, when the convex portion 11 and the concave portion 12 are fitted together, In addition, there is a risk that the long side edge surfaces of adjacent panels cannot be brought into contact with each other in a state where they are in close contact with each other, so that the fire resistance is deteriorated or the appearance is impaired.

  Although the height dimension of the said convex part 11 and the recessed part 12 is also appropriate, in the ALC panel like this embodiment, the height dimension d1 of the convex part 11 in FIG.3 (b) is about 7-10 mm. It is desirable to do. The reason for this is that the convex portion 11 of the ALC panel is generally formed by cutting the other long side edge, and in order to increase the height of the convex portion 11, a large width that allows for the cutting margin of the panel in advance. It is necessary to manufacture a panel having dimensions, and if the height of the convex portion 11 is too high, the amount of cutting of the panel increases, which is uneconomical. If the height of the convex portion 11 is too low, for example, This is because when a fire or the like occurs after laying the panel, there is a risk that fire, smoke, hot air, etc. may circulate from the joint.

  Further, the depth d2 of the concave portion 12 may be about 9 to 13 mm by adding the gap size t1 to the height dimension d1 of the convex portion 11. Further, the width dimension B1 of the convex part 11 and the width dimension B2 of the protruding part 13 on both sides of the concave part 12 are the above-mentioned so as not to be damaged when the convex part 11 or the concave part 12 is processed or when the panel is transported or constructed. It is desirable that the depth d2 and the height dimension d1 be about twice or more.

  The material of the adhesive 5 filled in the gap S between the convex portion 11 and the concave portion 12 is appropriate. For example, a siliceous adhesive or an acrylic resin emulsion adhesive may be used. wear. In particular, an acrylic resin-based adhesive that has low viscosity and does not require force when squeezing with a cartridge gun or the like is preferable.

  As described above, the adhesive 5 is filled only in the substantially central portion in the panel longitudinal direction in the gap S between the convex portion 11 and the concave portion 12. This is because, regardless of the position in the longitudinal direction of the panel (when a load is applied), the deflection of the panel is maximized at the center of the longitudinal direction of the panel, and the load on the adjacent panel at the position where the deflection is maximum. Transmission is made. Therefore, if the adhesive material is filled in the position where the load transmission is performed, the adjacent panel at that position is integrated through the adhesive material 5, thereby allowing the load transmission to be performed smoothly. This is because a joint level difference is less likely to occur.

  The filling length of the adhesive 5 in the longitudinal direction of the panel is appropriate, but is preferably about 200 to 500 mm. When a concrete panel such as the above ALC panel is used as a horizontal member such as a roof or flooring, a length of about 2000 mm is usually used. In some cases, a length of about 610 to 4200 mm is used. In any case, in order to make it difficult to cause local breakage of the adhesive filling portion that transmits the load, it is desirable that the length is 200 mm or more, and the filling length of the adhesive is increased. Considering the effect and cost in the case of this, it is desirable that the thickness is 500 mm or less.

  The concrete panel mounting structure according to the present invention is a panel in the gap S formed between the convex portion 11 and the concave portion 12 of the actual joint 10 provided in the long side edge adjacent in the panel width direction as described above. Since the adhesive material 5 is filled only in the substantially central portion in the longitudinal direction, the length of each panel adjacent in the panel width direction is substantially the same as when the adhesive material 5 is provided over the entire length of the gap S in the panel longitudinal direction. It is possible to reduce the amount of the adhesive 5 used while preventing the step and rattling from occurring at the side edge and allowing the load transmission to be performed smoothly. In addition to significantly reducing costs such as material costs and construction costs, it is possible to reduce contamination of workers' clothes and surrounding environment.

  The adhesive 5 may be filled into the panel 1 either before or after the panel 1 is laid on the beam B, but preferably before the laying on the beam B, for example, FIG. As shown in FIG. 4, the panel 1 may be filled in a raised state, and by doing so, it can be filled easily and reliably. In this case, if a cartridge gun 6 or the like as shown in the figure is used, the work is easy and it is possible to further reduce the contamination of the operator's clothes and surrounding environment.

  The filling position of the adhesive 5 with respect to the joint 10 may be either the convex portion 11 or the concave portion 12, but it is preferable that the adhesive material 5 is filled in the central portion of the concave portion 12 particularly in the panel thickness direction. Further, the filling amount of the adhesive 5 is such that the panels adjacent to each other in the panel width direction after filling are laid in order on the beam B and the long edge of the adjacent panel is sufficiently pressed without a gap so that the convexity of the actual joint 10 is increased. In the gap S between the portion 11 and the recess 12, particularly between the top surface 11 a of the projection 11 and the bottom surface 12 a of the recess 12, both side surfaces 11 b and 11 b of the projection 11 and both sides 12 b of the recess 12 It is desirable that the adhesive material is sufficiently filled between 12b and 12b.

  Specifically, for example, the filling amount per unit length of the adhesive 5 filled in the gap S is filled within a range of 1.5 to 2.5 times the volume per unit length of the gap S. It is desirable to do. The volume per unit length is a calculated volume per unit length of the gap S, and does not include bubbles or the like communicating with the gap S. As described above, if the adhesive is filled within the range of 1.5 to 2.5 times its volume, the adhesive is not only in the gap S but also in bubbles and the like communicating with the gap S. As described above, the adhesive material wraps around between the top surface 11a and the bottom surface 12a and between both side surfaces 11b and 11b and both side surfaces 12b and 12b as described above. 1 can be satisfactorily and integrally fixed.

  In the above embodiment, the concrete panel mounting structure according to the present invention is applied to the floor panel mounting structure. In particular, the ALC panel constituting the floor is fixed to the upper surface of the beam, and is composed of the fixing bracket 2, the bolt 3, and the washer 4. Although it is fixed by the dry method using the support means, the structure of the fixed support means is appropriate, and the fixing method is not limited to the dry method, and may be fixed by the wet method using the conventional mortar. Furthermore, it can be applied not only to floor panels but also to roof panels. The above concrete panels are not limited to ALC panels, and are also applicable when various concrete panels are attached to structural frames such as beams. can do. In each of these cases, the same effect as described above can be obtained.

  As described above, the concrete-based panel mounting structure according to the present invention is substantially in the longitudinal direction of the panel in the gap formed between the convex portion and the concave portion of the actual joint provided at the long side edge of the panel adjacent in the width direction. Since the adhesive material is filled only in the central portion, it is possible to fix the adjacent panels in the width direction with a simple structure, easily and inexpensively. Further, even when the load is concentrated on any of the adjacent panels, there is no joint level difference that causes defects such as cracks and peeling in the waterproof finish and the self-leveling material finish. Furthermore, by filling the joints with the adhesive only in the approximate center of the panel in the longitudinal direction, the amount of filler used can be reduced, cost reduction can be expected, and the labor for filling the adhesive can be reduced. It is suitable for forming floors, roofs, etc. using ALC panels and other various concrete panels, and can also be used effectively industrially.

B Beam (Structural frame)
DESCRIPTION OF SYMBOLS 1 Panel 1a Groove | groove 2 Fixing metal fitting 2a Female screw hole 3 Bolt 3a Shaft part 3b Head part 4 Washer 4a Bolt insertion hole 4b Concave part 5 Adhesive material 6 Cartridge gun 10 Actual joint 11 Convex part 12 Concave part 13 Protrusion part

Claims (3)

A plurality of concrete panels having a substantially rectangular surface are laid on a structural frame such as a beam in a substantially horizontal manner, and the above-mentioned panels are attached to and supported by the structural frame by fixed support means installed between adjacent panels on the structural frame. And a concrete panel mounting structure
The configuration is such that the convex portion and the concave portion of the actual joint provided in the long side edge adjacent to the width direction of each panel are engaged, and the longitudinal direction of the panel in the gap formed between the convex portion and the concave portion is substantially A concrete panel mounting structure in which adhesive is filled only in the center.   The mounting structure for a concrete panel according to claim 1, wherein a filling length of the adhesive into the gap is in a range of 200 to 500 mm.   The filling amount per unit length of the adhesive material in the gap is in a range of 1.5 to 2.5 times the volume per unit length of the gap. Mounting structure for concrete panels.

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