JP6726784B2 - Clamping member used for mounting structure of extrusion molded cement board - Google Patents

Description

The present invention relates to a sandwiching member used in an attachment structure of an extrusion-molded cement board for mounting a plurality of hollow-sectioned extrusion-molded cement boards arranged side by side in one direction, and in particular to an installation location of the extrusion-molded cement board. The present invention relates to a holding member used in a mounting structure used when high mounting strength is required.

Since the extruded cement board is lightweight and has high strength, it is widely used as an outer wall material for buildings. In an outer wall structure using an extruded cement board, an angle that is a base material is generally fixed to a building frame, and a Z clip or the like fastened to the back surface of the extruded cement board is locked to the extruded cement board. A molded cement board is attached.

Depending on the area where the building is built, the outer wall of the building is exposed to strong wind and rain, and in the high-rise part of the building, the external environment that the outer wall receives is more severe than in the low-rise part. In particular, since the rooftop blind wall provided at the top of the building is an open outer wall, the wind pressure on the outer wall is large, and the outer wall must withstand not only negative pressure but also wind pressure from the inside.

The workable site and dimensions of the extruded cement board are determined by three factors: strength of the extruded cement board, rigidity of the extruded cement board, and mounting strength of the extruded cement board. When an extruded cement board is used for the rooftop blind wall where a large amount of wind pressure is applied, whether or not it can be used is mainly determined based on the strength of mounting strength among these three elements. Therefore, in such a situation, it is desired to further improve the mounting strength of the extruded cement board.

In Patent Document 1, as a structure for improving the mounting yield strength of an extrusion-molded cement board, a cross-sectional shape of the extrusion-molded cement board has a pair of inclined surfaces approaching toward the rear surface, and a bracket to which a mounting bolt is screwed. There is described a mounting structure having a shape that makes contact with both inclined surfaces. In this structure, the shear area of the extrusion-molded cement board that receives the force from the receiving metal is increased by using the extrusion-molded cement board having the hollow portion with the special cross-sectional shape, and the mounting strength is improved.

In Patent Document 2, a raising member is provided along the short side portion of the rectangular receiving member, and the receiving member is fastened to the extrusion molded cement plate via the raising member. In this structure, the receiving metal object is fastened so as to stride over slight irregularities on the surface of the hollow portion, so that the reduction of the mounting proof strength due to the irregularities is prevented.

JP, 2009-133107, A JP, 9-60192, A

A general receiving member has a flat plate shape, and when a force is applied, a strong force acts near the bolt holes of the extrusion molded cement plate. Therefore, it is necessary to design the structure so as not to cause damage starting from the bolt holes. In addition, if the cut pieces after drilling holes for passing the mounting bolts remain between the receiving metal and the extruded cement board, the force may not be evenly applied. This leads to a reduction in the yield strength of the part holding the receiving metal, and caution is required during drilling.

It is considered that these problems are solved by the structures described in Patent Documents 1 and 2. However, in the structure of Patent Document 1, it is necessary to manufacture an extrusion-molded cement plate having a hollow portion with a special cross-sectional shape, which increases the cost. In this structure, a thick portion is also formed, and the weight of the extrusion-molded cement board increases, which may lead to deterioration in transportability and workability. If the position of the bolt holes in the extrusion-molded cement plate is misaligned, it becomes difficult for the bracket to contact the inclined surface of the hollow part, and the desired fastening strength may not be obtained. There is also a drawback that it takes time to process.

In the structure of Patent Document 2, the presence of the raised member prevents the lowering of the mounting proof strength, but it is difficult to maintain the high mounting proof strength against the negative pressure on the extrusion molded cement plate for a long period of time. Therefore, there is a problem that the use of the roof blindfolded wall, which requires a high mounting resistance against negative pressure for a long period of time, is restricted.

Therefore, in view of the problems of the prior art, the present invention is an extrusion-molded cement board that can improve the mounting resistance of the extrusion-molded cement board without inviting cost increase and without lowering the transportability, workability, and workability. It is an object of the present invention to provide a holding member used for the mounting structure of .

The sandwiching member used in the mounting structure of the extruded cement plate of the present invention is an extruded cement plate in which a plurality of hollow portions formed in a rectangular cross section are juxtaposed in one direction. Mounting that is provided in the hollow part of the mounting structure of the extruded cement plate to be attached to the frame, penetrates the clip that is fastened to the base material, and penetrates from the back side of the extruded cement plate to any of the hollow parts A clamping member that is used in a mounting structure of an extrusion-molded cement board for clamping the back side base material of the extrusion-molded cement board from the inside by screwing with a bolt and is provided in the mounting structure. In the above, a separation portion having a screwing portion that is screwed into the mounting bolt and formed so as to be separated from the back-side base material, and both partition walls that are present on the partition wall sides on both sides of the hollow portion in the separation portion. And a contact portion formed so as to contact the back side base material in the vicinity of, and formed in a rectangular shape in plan view having long and short sides, and the contact portion is present along both the partition walls. Is configured as a long side portion of the sandwiching member, the separation portion, an inner portion where the screwing portion is present, and an outer portion on both sides in the lateral direction via a bent portion near the screwing portion, The inner portion is formed in a flat shape so as to be parallel to the back side base material, and the outer portion is formed in an inclined shape from the bent portion toward the contact portion, Portions are corner portions of both ends of the sandwiching member that linearly contact the back surface side base material, and contact the inner portion from the contact portion in the thickness direction of the inner portion of the separating portion. The distance to the surface on the part side is 2 mm to 8 mm, and this distance is smaller than the thickness of the holding member .

If the sandwiching member used for the attachment structure of the extrusion-molded cement board of the present invention is used , a general extrusion-molded cement board having a hollow portion having a rectangular cross section can be used, so that no cost increase occurs. In the sandwiching member used in the mounting structure of the present invention, the thick portion is not formed in the extrusion molded cement plate, the weight of the extrusion molded cement plate does not increase, and the transportability and workability are not deteriorated. .. The sandwiching member includes a spacing portion that has a threaded portion that is screwed into the mounting bolt and that is spaced from the back-side base material, and a contact portion that abuts the back-side base material in the vicinity of both partition walls of the hollow portion. Therefore, high positioning accuracy of the bolt holes of the extruded cement plate is not required, and the bolt holes are not required to be processed. Since the holding member has an abutting portion that comes into contact with the backside base material in the vicinity of both partitions of the hollow portion, it is the hollow portion that presses the backside base material with the holding member when negative pressure or the like is applied. In the vicinity of both partition walls. Therefore, high mounting proof stress can be obtained.

The sandwiching member is formed in a rectangular shape in plan view having long and short sides, the abutting portion is configured as a long side portion of the sandwiching member, and the abutting portion exists along both the partition walls. By using such a sandwiching member, the cost can be suppressed, and at the same time, the mounting proof strength can be effectively improved.

The length of the contact portion is preferably 50 mm to 80 mm. In the thickness direction of the inner portion of the separation unit, the distance from the abutment to the surface of the contact portion side of the inner portion Ru 2mm~8mm der.

According to the present invention, there is no need to use a special extrusion-molded cement board, the weight of the extrusion-molded cement board does not increase, and since it does not take time to process the bolt holes, it does not invite cost increase, transportability, construction And workability are not reduced. At the same time, the holding member presses the backside base material in the vicinity of both partitions in the hollow part, so the mounting proof strength can be significantly improved, and it can be used for a long time in a harsh usage environment such as a rooftop blind wall. Can be used across.

It is sectional drawing which shows the attachment structure of the extrusion molding cement board which concerns on one Embodiment of this invention. It is the figure which looked at the clamping member used for the attachment structure of the extrusion molding cement board of the present invention from three directions. It is a perspective view of the clamping member provided in the hollow part. (A) And (b) is a hollow inside front view which shows a different modification of a clamping member, respectively, (c) is a hollow interior plan view which shows another modification of a clamping member. It is a longitudinal section showing a 1st embodiment of a vertical attachment structure of the present invention. It is the figure which looked at the upper side of the vertical attachment structure of Drawing 5 from the back side of an extrusion molding cement board. It is the sectional view on the AA line of FIG. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the vertical attachment structure of this invention. It is the figure which looked at the lower side of the vertical attachment structure of Drawing 8 from the back side of an extrusion molding cement board. It is a longitudinal section showing a 1st embodiment of a horizontal installation structure of the present invention. It is the BB sectional drawing of FIG. It is a longitudinal section showing a 2nd embodiment of a horizontal installation structure of the present invention. It is the figure which looked at the horizontal installation structure of Drawing 12 from the back side of an extrusion molding cement board.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an attachment structure 1 for an extrusion-molded cement board according to an embodiment of the present invention. The extrusion-molded cement board 2 used for the attachment structure 1 of this extrusion-molded cement board is manufactured by extruding a mixture obtained by kneading water, cement, aggregate, fibers and the like with an extruder and cutting it into a predetermined size. Is. The extrusion-molded cement board 2 is formed with a plurality of hollow portions 3 each having a rectangular cross section, which are parallel to each other in the longitudinal direction which is the extrusion direction. Since the plurality of hollow portions 3 are configured, a plurality of partition walls 4 that connect the front surface side base material 2a and the back surface side base material 2b of the extrusion molded cement plate 2 are formed.

The extrusion-molded cement board mounting structure 1 is a structure in which the extrusion-molded cement board 2 is mounted on a building frame via a base material 5. This extrusion-molded cement board mounting structure 1 includes a clip 6 that is fastened to a base material 5, and a state in which a spring washer 15 and a washer 16 are assembled from the back side of the extrusion-molded cement board 2 that penetrates the clip 6. It is mainly configured by a mounting bolt 7 penetrating the hollow portion 3 and a holding member 8 provided in the hollow portion 3 and screwed with the mounting bolt 7.

For example, the extruded cement board 2 is attached as follows. A sandwiching member 8 is arranged in each hollow portion 3 of the extrusion-molded cement plate 2 at a predetermined location, and a mounting bolt 7 is penetrated through the clip 6 and the rear-side base material 2b. The mounting bolt 7 and the sandwiching member 8 form a rear-side base. At the same time as sandwiching the material 2b, the clip 6 is temporarily fixed. The clip 6 temporarily fixed to the base material 5 fixed to the body side is locked, the mounting bolts 7 are tightened, and the back side base material 2b of the extrusion molded cement plate 2 is sandwiched together with packing or the like. Attach the extruded cement board 2.

FIG. 2 is a view of the sandwiching member 8 used in the attachment structure 1 for the extruded cement board of the present invention viewed from three directions, and FIG. 3 is a perspective view of the sandwiching member 8 provided in the hollow portion 3. The sandwiching member 8 of the present embodiment is formed by pressing a metal plate having a required thickness that is rectangular in a plan view into a substantially V-shaped cross section.

The holding member 8 has a threaded portion 9 that is screwed into the mounting bolt 7, and is spaced apart from the back-side base material 2b, and extends to the partition wall 4 side on both sides of the hollow portion 3 in the spaced portion 12. The contact part 13 is provided and contacts the back-side base material 2b from the inside in the vicinity of both the partition walls 4 and 4. In the present embodiment, the outer portions 11 are formed on both sides in the lateral direction of the inner portion 10 in which the screw holes as the screwing portions 9 are formed, with the bent portions interposed therebetween. The dimensions of each part of the sandwiching member 8 may be those that meet the specifications of the extrusion-molded cement board 2.

The separating portion 12 separated from the back surface side substrate 2b is composed of the inner portion 10 and a part of both outer portions 11. The abutting portions 13 that come into contact with the back-side base material 2b are present on both sides in the lateral direction of the separating portion 12, and are composed of both outer edge portions 11g and 11g which are outer edges along the longitudinal direction of the sandwiching member 8. There is. Therefore, the contact portion 13 is configured as a long side portion of the holding member 8 and exists along both the partition walls 4 and 4 of the extrusion molded cement plate 2. Since the spacing member 12 is present in the sandwiching member 8, a cavity 14 is formed between the sandwiching member 8 and the backside base material 2b as shown in FIG. The contact portion is only the contact portion 13.

It is important that the contact portion 13 of the holding member 8 is present in the hollow portion 3 in the vicinity of both partition walls 4, 4. When a negative pressure is applied to the extrusion-molded cement board 2 and a force is generated in the pulling-out direction of the mounting bolt 7, the holding member 8 presses the back-side base material 2b in the vicinity of the partitions 4 and 4. By allowing the contact portion 13 to exist in the vicinity of both the partition walls 4 and 4, of the force received by the extrusion-molded cement plate 2 from the sandwiching member 8, the force applied to the portion close to the bolt hole 29 of the backside base material 2b is minimized. suppress. At the same time, the received force is released to the side of each partition wall 4 as much as possible, thereby increasing the force applied to each partition wall 4. The side of each partition wall 4 as used herein means the partition wall 4 and a portion near the partition wall 4 such as the contact portion 30 of the back side substrate 2b.

Each partition wall 4 has a large width dimension substantially in the same direction as the force received from the sandwiching member 8 (thickness direction of the backside substrate 2b), and has a high yield strength against the received force. Therefore, by releasing the force to each partition wall 4 side, cracks and the like of the extrusion-molded cement board 2 can be prevented for a long period of time. As a result, the mounting strength of the extrusion-molded cement board 2 can be significantly improved.

The distance t1 between the contact portion 13 and each partition wall 4 is preferably as close to the hollow portion as possible. However, if the sandwiching member 8 is formed large in order to bring the contact portion 13 close to each partition wall 4, the sandwiching member 8 can be located inside the hollow portion 3. There is a risk that the workability when placing it on the floor will be reduced. Therefore, it is preferable that the sandwiching member 8 be dimensioned in consideration of these points.

The distance t1 between the contact portion 13 and each partition wall 4 is preferably 1/10 to 1/4 with respect to the width W of the hollow portion 3, and more preferably 1/8 to 1 with respect to the width W of the hollow portion 3. /5. If the distance t1 between the contact portion 13 and each partition wall 4 is greater than ¼ of the width W of the hollow portion 3 and the contact portion 13 is far from each partition wall 4, the bolt hole of the backside base material 2b. The force applied to the portion close to 29 becomes large, and it is not possible to obtain high attachment strength of the extrusion-molded cement board 2.

The length n1 of the contact portion 13 along each partition wall 4 is preferably 50 mm to 80 mm, more preferably 60 mm to 70 mm, although it depends on the size of the back-side substrate 2b and each partition wall 4. If the length n1 of the contact portion 13 is smaller than 50 mm, the force concentrates on the contact portion of the back-side base material 2b, so that high mounting resistance cannot be obtained. The longer the contact portion 13 is along each partition wall 4, the greater the force released to the partition wall 4 side, and the higher mounting yield strength can be obtained. On the other hand, if the holding member 8 is made too large to make the contact portion 13 long, the weight of the holding member 8 increases and the transportability and the like decrease. To decide.

The cavity 14 may be formed between the back-side base material 2b and the separating portion 12, but if the space t2 between the back-side base material 2b and the separating portion 12 is too small, the clamping member 8 bends to cause these. May come into contact with each other. Therefore, it is preferable that the space t2 between the back-side base material 2b and the separating portion 12 is about 2 mm to 8 mm.

Since each partition wall 4 of the extrusion-molded cement board 2 is linear between the front surface side base material 2a and the back surface side base material 2b, a large force can be released to the respective partition wall 4 side, and thus the hollow portion 3 Must have a rectangular cross section. If the hollow portion has a different cross-sectional shape, there will be a partition wall portion that is far from the contact point of the back surface side base material 2b, and it will be difficult to suppress the force applied to the back surface side base material 2b.

The thickness n2 of the back side substrate 2b of the extrusion-molded cement board 2 varies depending on the total thickness of the extrusion-molded cement board, but in the case of an extrusion-molded cement board having a total thickness of 50 mm to 100 mm, 12 mm to 18 mm is preferable, and more preferable. Is 14 mm to 16 mm. The thickness n3 of each partition wall 4 is preferably 1/7 to 1/3, more preferably 1/5 to 1/3 of the width W of the hollow portion 3. The relationship between the distance t1 between the contact portion 13 and each partition wall 4, the length n1 of the contact portion 13, the thickness n2 of the backside substrate 2b, and the thickness n3 of each partition wall 4 is (n2+n3)/2≧t1 and n2. It is preferable that the relational expression x4≦n1 is satisfied. The type and size of the extrusion-molded cement plate 2 to which the mounting structure 1 of the extrusion-molded cement plate can be applied are not limited, but the extrusion-molded cement plate 2 having the above-described dimensions can more effectively improve the mounting strength. Can be made.

As an example and a comparative example, the breaking load was measured by a pull-out test when a normal square nut that is a rectangular plate material was used for the holding member and when the holding member 8 of the present embodiment was used. As a result, the average value of the ordinary square nut was 4.53 N, and the average value of the sandwiching member 8 of the present embodiment was 6.31 N. When the holding member 8 of this embodiment was used, a breaking load of 1.39 times that of a normal square nut could be obtained. The total thickness of the extruded cement board used in the examples is 60 mm, n2 is 14 mm, the width of the hollow part is 56 mm, and n3 is 14 mm. The holding member 8 of the present embodiment used as an example has a thickness of 6 mm, a width of 40 mm, a length of 60 mm, a distance of t1 of 9 mm, and a distance of t2 of 3 mm. The one having a length of 30 mm and a length of 60 mm was used.

4A to 4C show modified examples of the holding member. FIGS. 4A and 4B are front views of the inside of the hollow portion showing different modifications of the holding member, and FIG. 4C is a plan view of the inside of the hollow portion showing another modification of the holding member. The sandwiching member 20 shown in FIG. 4A is composed of a substrate 21 that serves as a separating portion, and thin plate members 22 that serve as abutting portions that are fixed to both sides of the substrate 21, and are long along each partition wall 4. It is formed in a rectangular shape in a plan view. The holding member 23 shown in FIG. 4B is formed by press working as in the embodiment of FIG. 1, and has a main body portion 24 serving as a separating portion and contact leg portions on both sides of the main body portion 24. 25, it is possible to secure a larger contact area with the back-side substrate 2b.

A sandwiching member having a larger contact area with the back-side base material 2b is a modified example shown in FIG. 4(c). The sandwiching member 26 is composed of a substrate 27 serving as a separating portion and thin elongated plate members 28 serving as abutting portions fixed to both sides of the substrate 27. It is formed longer along each partition wall 4 beyond the length of 27. By using the sandwiching member 26 having a larger contact area, the mounting proof strength can be further increased. The sandwiching member is not limited to the rectangular shape in plan view, but may be formed in any other shape such as a polygonal shape in plan view other than a rectangle, or a partially arcuate shape in plan view.

An example in which the mounting structure 1 of the extruded cement board is applied to the vertically mounted mounting structure will be described below. FIG. 5 is a vertical cross-sectional view showing a first embodiment of a vertical mounting structure of the present invention using a mounting structure 1 of an extruded cement board. In the following description, members that are the same as the members described in the attachment structure 1 of the extrusion-molded cement plate will be described with the same reference numerals. FIG. 6 is a view of the upper side of the vertical attachment structure 35 of FIG. 5 as viewed from the back side of the extrusion molded cement plate 2. FIG. 7 is a sectional view taken along the line AA of FIG.

The vertical mounting structure 35 is a mounting structure of the extrusion molded cement plate 2 in which the hollow portion 3 is extended in the vertical direction which is the vertical direction, and in the present embodiment, the first base material 37 connected to the upper skeleton 36 is provided. An upper structure 38 for mounting the upper side 2U of the extrusion molded cement board 2 through, and a lower structure 41 for mounting the lower side 2S of the extrusion molded cement board 2 through a second base material 40 connected to the lower frame 39, The deflection suppressing auxiliary member 42 which connects the upper body 36 and the lower body 39 to suppress the deflection between the two bodies 36, 39, and the upper side 2U and the lower side 2S of the extrusion molded cement plate 2 are respectively the first and the second. The attachment structure 1 of the extrusion-molded cement board fixed to the second base materials 37 and 40 is provided.

The clip 6 used in this embodiment is similar to the clip shown in the example of FIG. 1, and is a type that uses two mounting bolts 7. As shown in FIG. 6, the clip 6 is composed of a base portion 31 and a locking portion 32 extending from the base portion 31. The base portion 31 is formed with a notch 17 for passing one of the mounting bolts 7, and the locking portion 32 is provided with an inclined portion 18 on one side thereof to prevent interference with other members. In this clip 6, at the time of mounting, the clip 6 is rotated around the other mounting bolt 7, the notch 17 is hooked on the other mounting bolt 7, and both mounting bolts 7, 7 are tightened and fastened. Make a mark. The shape of the clip 6 is not limited, and a W-shaped Z clip, a Z clip in which one mounting bolt is used, or the like can of course be used.

FIG. 5 shows the uppermost part as the upper structure 38 and the intermediate part as the lower structure 41. In the uppermost structure, the L-shaped angle 43 is fixed to the lower flange 36s of the H-shaped steel material 36 serving as the upper structure. The first base material 37 extending in the horizontal direction is fixed to the L-shaped angle 43. A plurality of clips 6 fastened to the extrusion-molded cement board 2 are engaged with the first base material 37, and mounting bolts 7 are tightened so that the upper side 2U of the extrusion-molded cement board 2 is the first base material 37. It is fixed to. In this uppermost structure, the extrusion molded cement plate 2 is attached to the upper H-shaped steel material 36, which is the upper frame, by the above-described extrusion molded cement plate mounting structure 1.

In the structure of the intermediate portion, the L-shaped angle 44 is fixed to the upper flange 39u of the H-shaped steel material 39 serving as the lower skeleton, and the support angle 45 that is long in the vertical direction is fixed to the L-shaped angle 44. To the support angle 45, a receiving angle 40 as a second base material that is long in the horizontal direction is fixed. The lower portion of the extruded cement board 2 is supported by the receiving angle 40. A packing 19 is provided between the receiving angle 40 and the backside base material 2b of the extrusion molded cement plate 2. A plurality of clips 6 fastened to the extrusion-molded cement board 2 are engaged with the receiving angle 40 which is the second base material, and the mounting bolts 7 are tightened to fix the lower side 2S of the extrusion-molded cement board 2 to the first side. 2 It is fixed to the receiving angle 40 which is the base material. In this structure of the intermediate portion, the extrusion molded cement plate 2 is attached to the lower H-shaped steel material 39, which is the lower frame, by the above-described extrusion molded cement plate mounting structure 1.

A deflection suppressing auxiliary member 42 connecting these is fixed so as to cross the lower flange 36s of the H-shaped steel material 36 which is the upper body and the upper flange 39u of the H-shaped steel material 39 which is the lower body. .. As a result, the amount of bending of the first base material 37 and the second base material 40 can be reduced, and damage to the fastening of the clip 6 due to the bending and twisting of the base materials 37 and 40 can be effectively prevented.

FIG. 8 is a vertical cross-sectional view showing a second embodiment of the vertical attachment structure of the present invention, and FIG. 9 is a view of the lower side of the vertical attachment structure 50 of FIG. 8 seen from the back side of the extrusion molded cement board 2. Is. FIG. 8 shows an intermediate part as the upper structure 51 and a lowermost part as the lower structure 52. In the structure of the intermediate part, the L-shaped angle 54 is fixed to the lower flange 39s of the H-shaped steel material 39 serving as the upper skeleton. The first base material 55 extending in the horizontal direction is fixed to the L-shaped angle 54. A plurality of clips 6 fastened to the extruded cement board 2 are engaged with the first base material 55, and the mounting bolts 7 are tightened so that the upper side 2U of the extruded cement board 2 becomes the first base material 55. It is fixed. In this structure of the intermediate portion, the extrusion molded cement plate 2 is attached to the upper H-shaped steel material 39 which is the upper body by the above-mentioned attachment structure 1 of the extrusion molded cement plate.

In the lowermost structure, the L-shaped angles 57, 57 are fixed to the upper and lower flanges 56u, s of the H-shaped steel material 56, which is the lower frame, respectively. A long support angle 58 is fixed. A receiving angle 59 as a second base material that is long in the horizontal direction is fixed to the support angle 58. The lower part of the extrusion molded cement plate 2 is supported by the receiving angle 59. The packing 19 is provided between the receiving angle 59 and the backside substrate 2b of the extrusion molded cement plate 2. The plurality of clips 6 fastened to the extrusion-molded cement board 2 are engaged with the receiving angle 59 which is the second base material, and the mounting bolts 7 are tightened to fix the lower side 2S of the extrusion-molded cement board 2 to the first side. 2 It is fixed to the receiving angle 59 which is the base material. In this lowermost structure, the extrusion molded cement plate 2 is attached to the lower H-shaped steel material 56, which is the lower frame, by the above-described extrusion molded cement plate mounting structure 1.

A deflection suppressing auxiliary member 60 connecting these is fixed so as to cross the lower flange 39s of the H-shaped steel material 39 which is the upper body and the upper flange 56u of the H-shaped steel material 56 which is the lower body. .. As a result, the amount of deflection of the first base material 55 and the second base material 59 can be reduced, and damage to the fastening of the clip 6 due to the bending or twisting of the base materials 55 and 59 can be effectively prevented.

An example in which the mounting structure 1 of the extruded cement board is applied to the laterally mounted mounting structure will be described below. FIG. 10 is a vertical cross-sectional view showing a first embodiment of the horizontal tensioning mounting structure of the present invention, and FIG. 11 is a cross-sectional view taken along the line BB of FIG. The horizontal mounting structure is a structure for mounting the extrusion-molded cement board 2 in which the hollow portion 3 is extended in the horizontal direction, which is the left-right direction. In this embodiment, the extrusion-molded cement board is fixed to the base material connected to the frame. It is equipped with a structure.

FIGS. 10 and 11 show the structure of the uppermost part of the building. In this horizontal installation structure 65, a plate material 67 is fixed to an H-shaped steel material 66, which is the body, and two base materials extending in the vertical direction are provided. 68, 68 are fixed so as to sandwich the plate material 67 from the left and right. A packing 19 is provided between the two base materials 68, 68 and the backside base material 2 b of the extrusion molded cement plate 2. A plurality of clips 6 fastened to two laterally oriented extruded cement plates 2, 2 are fastened to these base materials 68, 68. At the same time, the mounting bolt 7 is tightened, and the two extrusion molded cement plates 2 and 2 are fixed to the two base materials 68 and 68 so as to abut each other. In this uppermost structure, the extrusion-molded cement board 2 is attached to the H-shaped steel material 66, which is the body, by the above-described extrusion-molded cement board mounting structure 1.

FIG. 12 is a vertical cross-sectional view showing a second embodiment of the horizontal tensioning mounting structure of the present invention, and FIG. 13 is a view of the horizontal tensioning mounting structure 69 of FIG. 12 as seen from the back side of the extrusion molded cement board 2. 12 and 13 show the structure of the lowermost part of the building, in which a plate material 71 is fixed to an H-shaped steel material 70 serving as a skeleton, and two base materials 72, 72 extending long in the vertical direction are the plate materials. It is fixed so as to sandwich 71 from the left and right. A plurality of clips 6 fastened to two laterally oriented extruded cement plates 2, 2 are fastened to these base materials 72, 72. At the same time, the mounting bolt 7 is tightened, and the two extrusion molded cement plates 2 and 2 are fixed to the base materials 72 and 72 so as to abut each other. A receiving angle 73 is fixed to the lower ends of both base materials 72, 72, and the lower portions of both extrusion-molded cement plates 2, 2 are supported by this receiving angle 73. In this lowermost structure, the extrusion-molded cement board 2 is attached to the H-shaped steel material 70, which is the body, by the above-mentioned extrusion-molded cement board mounting structure 1.

When the attachment structure 1 of the extrusion-molded cement board of the above-described embodiment is used, since the sandwiching member 8 has the abutting portion 13, when the extrusion-molded cement board 2 is subjected to negative pressure or wind pressure from the inside, the sandwiching member 8 is provided. It is in the vicinity of both partition walls 4 and 4 that the back side substrate 2b is pressed by 8. By providing the contact portion 13 in the vicinity of both the partition walls 4 and 4, the force applied to the portion of the back side substrate 2b near the bolt hole 29 is suppressed as much as possible, and the force received from the sandwiching member 8 is applied to each partition wall as much as possible. It can be released to the 4 side. This makes it possible to obtain a high pulling strength and the like, and to significantly improve the mounting strength.

Since a general extrusion molded cement board 2 having a hollow portion 3 formed in a rectangular cross section can be used, the cost does not increase. In the prior art, the thick-walled portion was formed in the extrusion-molded cement board in order to improve the mounting resistance, but the extrusion-molded cement board 2 used in this embodiment is a general one. There is no thick part. Therefore, the weight of the extrusion-molded cement board 2 does not increase, and it is possible to prevent deterioration in transportability and workability.

The holding member 8 is composed of a separating portion 12 and an abutting portion 13 that abuts the backside base material 2b in the vicinity of both the partition walls 4 and 4, and the abutting portion 13 is located on the backside even if there is some displacement. It surely contacts the base material 2b. Therefore, high precision is not required for positioning the bolt holes 29 of the extrusion-molded cement board 2, and the bolt holes 29 are not required to be worked.

Even when the cutting waste remains due to the processing of the bolt hole 29 of the back side base material 2b, the spacing portion 12 of the holding member 8 is separated from the bolt hole 29, so that the holding member 8 and the back side base material 2b are separated from each other. No cutting chips are caught between them. Therefore, it is possible to prevent the concentration of force due to the remaining cutting chips. Further, by tightening the mounting bolt 7, the force constantly generated on the backside base material 2b sandwiched between the sandwiching member 8 and the clip 6 is also reduced.

By using the mounting structure 1 of such an extrusion-molded cement board for the vertical mounting structure and the horizontal mounting structure, it is possible to perform vertical mounting and horizontal mounting on a site where a large wind pressure is applied and high mounting strength is required. Construction is possible. As described above, a general extrusion-molded cement board 2 can be used, the weight of the extrusion-molded cement board 2 does not increase, and the processing of the bolt holes 29 does not take time. Therefore, the cost is not increased, and the transportability, workability, and workability are not reduced. At the same time, the force received from the sandwiching member 8 is released to both the partition walls 4 and 4, so that the mounting proof strength is improved, and the mounting reliability of the extrusion molded cement plate 2 can be significantly improved. As a result, it is possible to carry out the construction of the extruded cement board 2 at a site requiring high mounting strength, and the extruded cement board 2 can be used for a long period of time in a harsh environment such as a rooftop blind wall. ..

The present invention is not limited to the above embodiment. The disclosed embodiments are illustrative and not limiting of the extruded cement plate mounting structure, the upright mounting structure, and the lateral mounting structure according to the present invention. The vertical attachment structure and the horizontal attachment structure to which the attachment structure of the extruded cement board of the present invention is applied are not limited. The clips, mounting bolts, and other members that are provided as required for the mounting structure of the extrusion-molded cement plate may have any form as long as they do not impair the effects of the present invention.

1 Extrusion-molded cement board mounting structure 2 Extrusion-molded cement board 2U, 2S Upper and lower sides of extrusion-molded cement board 2a, 2b Front-side base material, back-side base material 3 of extrusion-molded cement board 3 Hollow part 4 Partition wall 5 Base material 6 Clip 7 Mounting Bolt 8, 20, 23, 26 Clamping Member 9 Screwing Part 10 Inner Part 11 Outer Part 12 Spacing Part 13 Contact Part 14 Cavity Part 15 Spring Washer 16 Notch Part 18 Inclined Part 19 Packing 21 Board 22 thin plate member 24 main body part 25 contact leg part 27 substrate 28 thin long plate member 29 bolt hole 30 contact part 31 base part 32 locking part 35, 50 vertical installation structure 36 upper body, H-shaped steel material (Fig. 5)
37, 55 First base material 38, 51 Upper structure 39 Lower body, H-shaped steel material (Fig. 5)
39 Upper body, H-shaped steel (Fig. 8)
40 Second Base Material, Receiving Angle 41, 52 Lower Structure 42, 60 Deflection Suppression Supporting Member 43, 44, 54, 57 L-shaped Angle 45, 58 Support Angle 56 Lower Body, H-shaped Steel Material (Fig. 8)
59 Second base material, receiving angle 65, 69 Horizontal mounting structure 66, 70 H-shaped steel material 67, 71 Plate material 68, 72 Base material 73 Receiving angle t1 Distance between abutment part and each partition wall t2 Backside base material Distance from the spacing part n1 Length of contact part n2 Thickness of backside substrate n3 Thickness of partition wall

Claims (2)

Extruded cement board in which a plurality of hollow portions formed in a rectangular cross section are juxtaposed in one direction is installed in the hollow portion in the mounting structure of the extruded cement board that is attached to the building frame through the base material. , Through the clip that is fastened to the base material and screwed with a mounting bolt that penetrates from the back side of the extrusion-molded cement board to the hollow part of the extrusion-molded cement board to form the back-side base material of the extrusion-molded cement board. A sandwiching member used for an attachment structure of an extrusion-molded cement board for sandwiching from inside,
In a state where the mounting structure is provided,
A separation portion having a screwing portion that is screwed into the mounting bolt and formed to be separated from the back-side base material, and the separation portion that is present on the partition wall sides on both sides of the hollow portion and near both partition walls. And an abutting portion formed so as to abut the back-side base material,
It is formed in a rectangular shape in plan view with long and short sides,
The abutting portion is configured as a long side portion of the sandwiching member so as to be present along both the partition walls,
The separation portion has an inner portion where the screwed portion is present, and outer portions on both sides in the lateral direction via a bent portion near the screwed portion,
The inner portion is formed in a flat shape so as to be parallel to the back side base material, and the outer portion is formed in an inclined shape from the bent portion toward the contact portion,
The abutting portion is a corner portion of both ends of the holding member, which comes into linear contact with the backside substrate ,
The distance from the contact portion to the contact portion side surface of the inner portion in the thickness direction of the inner portion of the separating portion is 2 mm to 8 mm, and
A holding member used for an attachment structure of an extrusion-molded cement board , in which this distance is smaller than the thickness of the holding member. The holding member used for the attachment structure of the extrusion molded cement board according to claim 1, wherein the contact portion has a length of 50 mm to 80 mm.

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