JP2018138718A - Folded-plate roof repair method - Google Patents

Abstract

PURPOSE: To provide a folded-plate roof repair method capable of efficiently constructing a repaired roof or a new folded-plate roof while removing an existing roof.CONSTITUTION: In an existing folded-plate roof A provided with an existing tight frame 2 having two leg parts 21 and a top part 22 formed on a lower end of a leg seat plate 23 installed and fixed on an existing structural member 4 and an existing folded-plate roof plate member 1 supported by the existing tight frame 2, the existing folded-plate roof plate member 1 is removed from the existing tight frame 2. A repaired tight frame B1 that can be mounted by means of no welding is disposed on the leg seat plate 23 between the adjacent existing tight frames 2 and the repaired tight frame B1 is mounted on the existing structural member 4 and a repaired folded-plate roof B is constructed by installing the folded-plate roof plate member 1 for repair via the repaired tight frame B1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a folded plate roof repair method capable of efficiently constructing a modified roof or a new folded plate roof while removing an existing roof.

  In recent years, many buildings constructed in the past have become obsolete all at once, and such obsolete buildings tend to increase. In particular, the roof is exposed to the harshest conditions, and therefore has a particularly high degree of aging compared to other parts. In the future, it is expected that there will be an increase in repair work for such aged buildings.

  In particular, aging metal folded-plate roofs are increasing and their refurbishment is required. There are various methods for the renovation. In general, the renovation work is to construct a new roof as it is on an existing roof, or to construct a renovated folded-plate roof (new folded-plate roof) after removing the existing roof. A type in which a modified (newly constructed) roof is formed on an existing roof is often used because it can be easily and inexpensively. In this way, it is often used to form a repair (new construction) roof on the existing roof, and this kind of technology development is also being carried out a lot. However, there are various conditions such as whether or not the existing tight frame that supports the existing roof can still be used sufficiently even if it is used for many years as a condition for the repair work. .

JP 2014-40720 A

  On the other hand, there is a case where it is dangerous and inconvenient to form a repaired (newly installed) roof on the existing roof while the whole or part of the existing roof is removed. For example, in a building that does not have a ceiling plate or the like under an existing roof in factories, warehouses, etc., the metal folded plate roof plate material or the related parts constituting the aging existing roof corrode. Some may fall into the room.

  In such a state, workers work in dangerous situations inside the building. Therefore, there are a method of removing only the existing folded-plate roof plate material and spreading the modified (newly-installed) folded-plate roof plate material, and a method of removing and modifying the existing tight frame. When it is confirmed that the existing tight frame is not reusable due to aging, the latter method is selected.

  However, in an old building having a metal roof, a tight frame that supports the metal roof plate is often fixed to a steel existing structure such as a beam or a purlin by welding. For this reason, the work to remove the tight frame from the existing structural material may cause sparks at the time of cutting to remove the welded part, or the removed object will fall from a high place, etc. It was extremely dangerous, it was extremely difficult to ensure safety, and the cost was high. Therefore, an object of the present invention is to minimize the removal of members constituting an existing metal folded plate roof and to efficiently generate a modified roof (which may be referred to as a new folded plate roof). The purpose is to provide a modified folded-plate roof construction method.

Therefore, as a result of intensive researches to solve the above-mentioned problems, the inventor clarified the invention of claim 1 with two leg portions each having a leg seat plate formed and fixed on an existing structural material at the lower end. In an existing folded plate roof comprising an existing tight frame having a top portion and an existing folded plate roof plate supported by the existing tight frame, the existing folded plate roof plate is removed from the existing tight frame and adjacent On the leg seat plate between the existing tight frames, a repaired tight frame that can be mounted by non-welding means is disposed, and the repaired tight frame is mounted on the existing structural material and repaired via the repaired tight frame. The above-mentioned problem has been solved by adopting a folded-plate roof refurbishing method in which the folded folded-plate roof plate material is mounted and a modified folded-plate roof is constructed.

  According to a second aspect of the present invention, there is provided a folding device according to the first aspect, wherein the entire existing tight frame is left on the existing structural material, and the bottom of the modified folded plate roof is positioned above the top of the existing tight frame. The above problem was solved by adopting the flat roof repair method. The invention of claim 3 is the folded plate roof repair method according to claim 1, wherein a part of the existing tight frame is cut and the existing tight frame is repaired low in the height direction. did.

  According to a fourth aspect of the present invention, the above-described problem is solved by adopting a folded plate roof repair method according to the first aspect, wherein the existing tight frame is partially cut and removed from the structural material. A fifth aspect of the present invention is the modified tight frame according to any one of the first, second, third, and fourth aspects, wherein the modified tight frame includes a receiving portion main body and both sides of the base plate in the width direction where the receiving portion main body is installed A hanging side plate is formed, and both the hanging side plates are provided with a pedestal in which a small notch portion capable of accommodating the leg seat plate of the existing tight frame is formed, and a U-shaped cross section is provided on the upper one side. A folded plate roof refurbishment that is installed on the existing structural member while the leg seat plate is housed in the small notch portion while the leg seat plate is housed in the small notch portion. The above problem was solved by using the construction method.

  A sixth aspect of the present invention is the modified tight frame according to any one of the first, second, third, and fourth aspects, wherein the modified tight frame includes a receiving portion main body, and the receiving portion main body is installed on both sides in the width direction of the base plate. It is configured to be fixed to the pedestal via a pedestal on which a hanging side plate is formed, a U-shaped cross section and a tightening screw portion provided on the upper piece side, on the existing structural material and on the lower end of the pedestal The above problem was solved by adopting a folded plate roof refurbishing method in which a spacer having a thickness equal to or greater than that of the leg seat plate is provided between the two.

  According to the first aspect of the present invention, after the folded plate roof plate material is removed from the trapezoidal existing tight frame having two legs and a top arranged at predetermined intervals on the existing structural material, the remaining on the existing structural material. Install the repaired tight frame that can be mounted by non-welding means on the leg seat plate of the existing tight frame, and install the repaired folded plate roof plate material through the modified tight frame to construct the modified folded plate roof To do. As a result, it is possible to reduce the number of steps required for dismantling the existing folded-plate roof, construct the modified folded-plate roof, improve the work efficiency in the construction of the modified folded-plate roof, and extremely simplify the construction.

  In the invention of claim 2, the folded plate roof repairing method in which the entire existing tight frame is left on the existing structural material and the bottom of the modified folded plate roof is positioned above the top of the existing tight frame. As a result, it is possible to construct a modified folded-plate roof while minimizing the dismantling of the existing folded-plate roof, further simplifying the repair work, and greatly reducing the burden on workers involved in this work. It is possible to construct a modified (newly) folded-plate roof in the process.

  In the invention of claim 3, the existing tight frame is lowered in the height direction by cutting a part of the trapezoidal portion of the existing tight frame and adopting the folded plate roof repair method for repairing the existing tight frame in the height direction. It is possible to use a modified tight frame having a low height, and it is possible to construct a modified folded-plate roof substantially equivalent to the existing folded-plate roof.

  In the invention of claim 4, by removing the trapezoidal portion of the existing tight frame, the trapezoidal portion does not exist, and therefore the modified folded plate roof can be set low in the height direction. As a result, the modified tight frame can have a lower receiving body height, and a modified folded plate roof that is substantially the same as the existing folded plate roof can be constructed.

  In addition, when the trapezoidal portion of the existing tight frame is removed, the steel frame etc. that supports the roof of factories and warehouses are exposed. The remaining portion is hidden by the existing structural material. Accordingly, when viewed from below, the remaining portion of the existing tight frame on the existing structural material is invisible, and the appearance of the ceiling can be prevented from being impaired.

  According to a fifth aspect of the present invention, the modified tight frame is formed by forming a small notch portion capable of accommodating the leg seat plate of the existing tight frame on both the hanging side plates of the pedestal. And it can install in the stable state on the existing structural material, without interfering with the leg seat board location of the existing tight frame. In the invention of claim 6, by providing the spacer, the repaired tight frame can be installed on the existing structural material without interfering with the leg seat plate of the existing tight frame.

(A) thru | or (D) is a front view which shows the process of constructing a clamped type | mold modified folding board roof based on 1st Embodiment of the construction method of this invention. (A) thru | or (E) is a front view which shows the process of constructing a crease type modified folding board roof based on 2nd Embodiment of the construction method of this invention. (A) is an enlarged front view of a state in which a modified tight frame is attached according to the construction method of the first embodiment of the present invention, and (B) is a state in which a modified tight frame is attached according to the construction method of the second embodiment of the present invention. Enlarged front view, (C) is an enlarged front view of a state in which a repaired tight frame is mounted by another construction method of the second embodiment of the present invention. (A) is a perspective view of a modified tight frame, (B) is a side view of the modified tight frame, (C) is a side view of a main part with a partial cross-section in a state where the modified tight frame is attached to a flange of an existing structural material, (D) is the principal part side view made into the partial cross section of the state which mounted | wore the flange of the existing structural material with the modified tight frame using the spacer. (A) thru | or (D) is a front view which shows the process of constructing superposition | polymerization type repair folding board roof based on 1st Embodiment of the cutting | disconnection of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. There are multiple embodiments of the present invention. The present invention includes two processes, a dismantling process of the existing folded-plate roof A and a construction process of the modified folded-plate roof B (see FIGS. 1 and 2). Here, the modified folded board roof B may be referred to as a newly installed folded board roof B.

The existing folded plate roof A includes an existing folded plate roof plate material 1 and an existing tight frame 2. The modified folded-plate roof B includes a modified tight frame B1 that can be attached to the existing structural material 4 without welding, and a modified (
And a folded roof plate material 5 for the new construction). In the present invention, the non-welding means refers to means for fixing to the flange portion 41 of the existing structural member 4 by locking or fitting without using welding. The existing structural material 4 is used for the construction of the modified folded-plate roof B after the existing folded-plate roof A is removed (see FIGS. 1 to 3).

  The existing folded-plate roof A and the modified folded-plate roof B have various folded-plate types, and a superposition type (see FIG. 1) and a superposition type in which trapezoidal chevron portions are overlapped and connected (see FIG. 5)). The folded plate roof plate material 1 constituting the existing folded plate roof A and the folded plate roof plate material 5 constituting the modified folded plate roof B have the same structure.

  Here, in order to distinguish the respective folded plate roof plate materials constituting the existing folded plate roof A and the modified folded plate roof B, the existing folded plate roof plate materials constituting the existing folded plate roof A are simply folded. The folded plate roof plate material for repair or new construction constituting the modified folded plate roof B is referred to simply as a folded plate roof plate material 5.

  The existing folded plate roof A is constructed as a clamped type roof on the existing structural material 4 such as a purlin through the existing tight frame 2 and the hanging member 3 (see FIG. 1 (A)). Here, as for the folded-plate roof board | plate material 1 and the folded-plate roof board | plate material 5, the longitudinal direction is made into X direction, and the direction orthogonal to a longitudinal direction is called Y direction. In the present invention, the Y direction of the folded plate roof plate material 1 and the folded plate roof plate material 5 is the width direction (see FIGS. 1 to 4 and the like). In FIGS. 1, 2, 3, and 5, the X direction is a direction orthogonal to the paper surface on which the drawings are written, and therefore the illustration of the X direction is omitted.

  Rising side portions 12 and 12 are formed from both side portions of the main plate 11 in the Y direction (width direction), top portions 13 and 13 are formed from both ends of the compatible ascending side portions 12 and 12, and from one end of the top portions 13 and 13 A lower collar portion 14a is formed, and an upper collar portion 14b is formed at the end of the other top portion 13 (see FIGS. 1A and 2A). Due to the main plate 11, the rising side portion 12, and the top portion 13 of the folded plate roof plate material 1, the existing folded plate roof A has a configuration in which a plurality of chevron portions are continuous at a predetermined interval, and the main plate 11 forms a bottom portion and rises. The side portion 12 and the top portion 13 form a chevron portion (see FIGS. 1A and 2A).

  Further, the folded plate roof plate material 5 constituting the modified folded plate roof B is formed with rising side portions 52, 52 from both side portions of the main plate 51 in the Y direction (width direction), and from both ends of the compatible rising side portions 52, 52 to the top portions. 53, 53 are formed, a lower flange portion 54a is formed from one end of the top portions 53, 53, and an upper flange portion 54b is formed at the end of the other top portion 53. Due to the main plate 51, the rising side portion 52, and the top portion 53 of the folded plate roof plate material 5, the modified folded plate roof B has a configuration in which a plurality of chevron portions are continuous at a predetermined interval, and the main plate 51 forms a bottom portion and rises. The side portion 52 and the top portion 53 constitute a chevron portion (see FIGS. 1D and 2E).

  The existing tight frame 2 is mounted at a predetermined interval along the Y direction of the flange 41 of the existing structural member 4 (see FIGS. 1A and 2A). Then, a plurality of existing folded roof plate members 1, 1... Are arranged in parallel on the existing tight frames 2, 2,. Adjacent folded roof plates 1, 1 have a lower flange portion 14 a and an upper flange portion 14 b that are clamped together with the hanger 3 and fixed on the existing tight frame 2. The existing folded-plate roof A is comprised by such a structure [refer FIG. 1 (A) and FIG. 2 (A)]. The existing structural material 4 is a steel mold, and H-shaped steel, I-shaped steel, groove-shaped steel, or the like is used.

  The existing folded plate roof A of the superposed type has trapezoidal semi-mountain shaped mountain portions 15 and 15 on both ends in the Y direction of the main plate 11 of the folded plate roof plate material 1. And the existing folded-plate roof A is comprised by superposing the mountain-shaped parts 15 and 15 of the adjacent folded-plate roof board | plate materials 1 and 1 [refer FIG. 5 (A)]. In this case, the top portion of the existing tight frame 2 is configured to be flat, and a bolt shaft portion 24 is provided. And the peak parts of the mountain-shaped parts 15 and 15 are superposed, the said bolt shaft part 24 penetrates between the peak parts, and the nut is fastened and fixed to the bolt shaft part 24.

  Similarly, the folded-plate roof plate material 5 in the modified folded-plate roof B also has angle portions 55, 55 on both sides in the Y direction. And the mountain-shaped parts 55 and 55 of the adjacent folded-plate roof board | plate materials 5 and 5 are superposed | polymerized, and the modified folding-plate roof B is constructed [refer FIG.5 (D)]. In this case, the top portion 73 of the existing tight frame 2 is formed in a flat shape, and a bolt shaft portion 74 is provided on the top portion 73. And the peak parts of the mountain-shaped parts 55 and 55 are overlap | superposed, the said bolt shaft part 74 penetrates through the peak parts, and the nut is fastened and fixed to the bolt shaft part 74 [FIG.5 (D )reference〕.

  Next, the dismantling process of the existing folded board roof A and the construction process of the modified folded board roof B will be described. In the dismantling process, there are two method embodiments depending on the treatment means of the existing tight frame 2. In the first embodiment of the method, it is left as it is on the existing structural material 4 (see FIGS. 1 and 3A), and in the second embodiment, a part of the existing tight frame 2 is removed. [Refer to FIG. 2, FIG. 3 (B), (C)].

  In both the first and second embodiments, there is an operation of separating the lower flange portion 14a and the upper flange portion 15b of the existing folded plate roof plate materials 1 and 1 adjacent to the existing tight frame 2. [Refer to FIG. 1 (A), (B), FIG. 2 (A), (B)). At this time, the suspension 3 is also separated from the existing tight frame 2 together with the lower collar portion 14a or the upper collar portion 14b. And many existing tight frames 2, 2, ... remain in the flange 41 of the existing structural material 4.

  Here, the existing tight frame 2 is composed of two leg portions 21 and 21 and a top portion 22. Leg seats 23 and 23 are formed at the lower ends of both leg portions 21 and 21. The top portion 22 and both leg portions 21 and 21 constitute a substantially trapezoidal trapezoidal portion. The both leg seat plates 23, 23 are formed in a horizontal and flat plate shape, and are formed by bending the lower portions of the two leg portions 21, 21 of the band plate metal material constituting the existing tight frame 2. It is a thing. In the existing tight frame 2, the leg seat plate 23 is installed on the flange portion 41 of the existing structural member 4 and fixed by fixing means such as welding. The existing tight frame 2 may be a single piece or a type in which a plurality of the tight frames 2 are continuous by the leg seat plate 23.

  In the first embodiment of the construction, all the existing folded plate roof plate materials 1, 1... Are removed from the existing tight frame 2 on the existing structural material 4, and the folded plate roof plate material 1 is removed from the existing structural material 4 [FIG. 1 (A) and (B)]. The entire existing tight frame 2 is left on the existing structural material 4. The repaired tight frame B1 is installed in the portion of the leg seat plate 23 of the existing tight frame 2 left on the existing structural material 4 (see FIG. 1C). Although the details of the modified tight frame B1 will be described later, no welding means is used for mounting on the existing structural member 4. That is, the modified tight frame B1 is a non-welded type.

Next, the folded folded roof sheet material 5 is disposed on the top 73 of the modified tight frame B1, and the folded folded roof sheet material 5 adjacent to the lower flange portion 54a and the upper flange portion 54b is clamped via the suspension 3. , 5 are connected to each other, and the modified folded-plate roof B is constructed by repeating this sequentially (see FIG. 1D). At this time, the main plate 51 of the folded plate roof plate material 5 constituting the modified folded plate roof B, that is, the position that becomes the bottom portion (main plate 51) of the modified folded plate roof B is the same position or substantially the same position as the top portion of the existing tight frame 2. And it becomes the structure located in the upper part [refer to Drawing 1 (D) and Drawing 3 (A)].

  In the construction of the first embodiment, only the existing folded plate roof plate material 1 of the existing folded plate roof A is removed from the existing structural material 4 and the existing tight frame 2 is left on the existing structural material 4 as it is. The number of processes involved in the work is reduced, and the modified folded-plate roof B can be constructed in a very short time, and the construction can be simplified.

  In the second embodiment of the construction, the folded plate roof plate material 1 constituting the existing structural material 4 is removed from the existing tight frame 2 from above the existing structural material 4, and the folded plate roof plate material 1 is removed from the existing structural material 4 [FIG. (See (A), (B)). So far, it is the same as that of 1st Embodiment of construction. Next, a part of the trapezoidal portion of the existing tight frame 2, that is, any of the leg portions 21, 21 or the top portion 22 is cut and processed so that the height direction of the existing tight frame 2 becomes lower than the original height. Is. Here, cutting a part of the trapezoidal part of the existing tight frame 2 means a part to be cut, and is not limited to cutting only one part of the trapezoidal part. Cutting is also included.

When removing a part of the existing tight frame 2, at least a part of the trapezoidal part constituted by the legs 21, 21 and the top 22 of the existing tight frame 2 is cut. And the process which lowers the existing tight frame 2 in the height direction from the original height is performed with the cutting | disconnection.

  The process of lowering in the height direction means that a part of the trapezoidal portion of the existing tight frame 2 is cut and the remaining portion of the existing tight frame 2 remaining on the existing structural material 4 is replaced with the flange 41 of the existing structural material 4. This means that the remaining portion is lowered in the height direction by a deformation means such as pushing down. The cutting with respect to the existing tight frame 2 is one or more places.

  The cutting machine 9 used for cutting is preferably a hand-held type, and is small and lightweight. The cutting operation (means) of the cutting machine 9 is shearing. As the cutting machine 9, a blade member that is movable relative to each other or a blade member that is movable on one side and fixed on the other side is used. The power used for cutting is a hydraulic mechanism, an electric mechanism, or manually. In addition, it is preferable not to employ a high-speed, flammable, and chipped material such as a disc-shaped grindstone that rotates at high speed, a saw, or a gas fusing for cutting work from the viewpoint of fire prevention.

  There are roughly three ways to cut the existing tight frame 2 by the cutting machine 9. First, one of the legs 21 and 21 of the existing tight frame 2 is cut in the vicinity of the root of the existing structural member 4 (see FIGS. 2B and 2C). As a result, most of the trapezoidal portion of the existing tight frame 2 is cut, and the remaining portion of the existing tight frame 2 remaining on the flange 41 of the existing structural material 4 is a slight one below the legs 21 and 21. Part.

  An air gap is formed between the leg portions 21 and 21 left on the flange 41 of the existing structural member 4. Both legs 21 and 21 of the existing tight frame 2 left on the flange 41 of the existing structural material 4 remain only in the lower part, which is considerably lower than the original height of the existing tight frame 2, and the height direction The process of lowering the height is completed when the legs 21 and 21 are cut (see FIG. 3B).

  The second and third are the cutting of the upper positions of both legs 21, 21 of the existing tight frame 2 and the cutting of the top 22. Since the portions of the both leg portions 21 and 21 of the existing tight frame 2 left on the flange 41 exist up to the upper part thereof, the both ends of the existing tight frame 2 are pushed down by pushing the leg portions 21 and 21 toward each other. The height direction is set lower than the original height (see FIG. 3C).

When the above-described cutting operation of the existing tight frame 2 and the process of lowering the height direction are completed, the repaired tight frame B1 is placed on the 23 leg seat plates left on the flange 41 of the existing structural member 4.
[See FIG. 2D]. That is, the entire existing tight frame 2 or a part of the trapezoidal portion remains on the flange portion 41 of the existing structural member 4, and the repaired tight frame B 1 is installed on the remaining leg seat plate 23. Then, the modified folded-plate roof B is constructed on the existing tight frame 2 [see FIG. 2 (E)].

Next, a specific embodiment of the modified tight frame B1 will be described with reference to FIG. First, as the wording which shows a direction in this description, like the existing folded-plate roof board | plate material 1, the X direction and the Y direction are used. Accordingly, the direction in which the folded plate roof plate members 5, 5,... Constituting the modified folded plate roof B to be constructed are arranged in the Y direction, and the direction which is the longitudinal direction of each folded plate building plate member 5 is the X direction. . Therefore, the longitudinal direction of the existing structural material 4 is the Y direction.

As described above, the modified tight frame B1 is a non-welded type that is attached to the existing structural member 4 without using welding. There are various types of such a modified tight frame B1, and an example thereof will be described. The modified tight frame B 1 includes a pedestal 6, a receiving portion main body 7, and a locking member 8. The pedestal 6 includes a substantially rectangular base plate 61 and hanging side portions 62 and 62. In the base plate 61, two through holes 63, 63 are formed at a predetermined interval along the longitudinal direction (see FIG. 4A).

  Further, rectangular shape notches 64, 64 are formed in the hanging side portions 62, 62 at intermediate positions in the longitudinal direction. Both the small notches 64 and 64 have the same shape, and are substantially rectangular gaps in which the lower ends of the hanging side portions 62 and 62 are opened [see FIGS. 4A and 4B]. ]. Both the small notches 64, 64 are configured to accommodate the leg seat plate 23 of the existing tight frame 2 left on the flange 41 of the existing structural member 4 [FIG. 4 (C). reference〕.

That is, the small notches 64 and 64 are formed on the both hanging side portions 62 and 62 of the pedestal 6, so that the modified tight frame B 1 is attached to the leg seat plate 23 on the flange portion 41 of the existing structural member 4.
Even if it is arranged at the place where the mark is left, the leg seat plate 23 of the existing tight frame 2 fits in both the small notches 64, 64 [see FIG. The repaired tight frame B1 can be installed in a very stable state on the leg seat plate 23 on the existing structural member 4 without interfering with each other.

  Next, the receiving portion main body 7 is formed in a plate shape and a column shape, and is installed at the center position in the longitudinal direction (X direction) of the base plate 61 of the pedestal 6. The columnar part 71 of the receiving part main body 7 has a base part 72 and a top part 73. The columnar portion 71 rises vertically on the base plate 61. The shape of the top portion 73 is stepped or flat, and when the folded plate roof plate material 5 for rehabilitation of the tightening type is used, the hanging member 3 is required, so that the stepped shape is suitable.

  A bolt shaft portion 74 is attached to the top portion 73 as necessary, and is used for attaching the suspension 3. In the construction method of the first embodiment, the height of the receiving body 7 is increased (see FIGS. 1C, 1D, and 3A). Specifically, the height dimension of the receiving portion main body 7 is equal to or higher than the height of the existing folded plate roof A and the modified folded plate roof B.

  The locking member 8 includes a locking body 81 having a substantially U-shaped cross section and a fastening screw portion 82. The locking body 81 is a member in which a metal plate material is formed in a substantially U-shaped cross section, and both ends of the flange portion 41 of the existing structural material 4 in the X direction can be inserted into the U-shaped locking member 3. Yes. A fastening screw portion 82 is mounted on the upper piece of the locking main body 81. The fastening screw portion 82 includes a screw shaft portion 82a and a nut 82b, and the nut 82b is screwed to the screw shaft portion 82a. It is the composition to do.

  The width direction (Y direction) of the locking main body 81 of the locking member 8 can be accommodated in both hanging side portions 62 and 62 on both sides in the width direction (Y direction) of the base 6. Two locking members 8 are provided for one pedestal 6, and the screw shaft portions 82 a of the tightening screw portions 82 a of the respective locking members 8 are respectively provided from the lower surface side of the base plate 11 of the pedestal 1. The nut 82b is inserted into the through hole 63 and screwed into the screw shaft portion 82a from the upper surface side of the base plate 11.

The modified tight frame B1 includes a locking body 81 having a substantially U-shaped cross section of the two locking members 8, 8.
81, the both ends of the flange portion 41 of the existing structural member 4 in the X direction are sandwiched and locked (see FIGS. 4C and 4D). Then, by tightening the nut 82 b against the screw shaft portion 82 a of the tightening screw portion 82, the flange 41 of the existing structural material 4 is tightened by the lower end of the hanging side portion 62 of the base 6 and the locking members 8, 8. Then, the modified side frame 62 of the pedestal 6 is fixed to the flange 41 of the existing structural member 4, so that the modified tight frame B 1 is attached to the existing structural member 4.

In addition, a small notch 64, on both hanging side portions 62, 62 of the base 6 of the modified tight frame B1,
There are also embodiments in which 64 is not formed (see FIG. 4D). In this embodiment, a spacer 65 is used. The spacer 65 has a thickness dimension equal to or greater than that of the leg seat plate 23 of the existing tight frame 2. The spacers 65 are placed on the flange portion 41 of the existing structural member 4 and on both sides of the leg seat plate 23 in the X direction.

The spacers 65 are disposed on the flange portion 41 and on both sides in the X direction of the leg seat plate 23, and both the suspended side portions 62 and 62 of the modified tight frame B1 and the flange portion 41 The spacer 65 is clamped and fixed. Since the thickness dimension of the spacer 65 is substantially equal to or greater than the thickness dimension of the leg seat plate 23, the leg seat plate 23 and the modified tight frame B1
The modified tight frame B1 is attached to the flange 4 of the existing structural material 4 without interfering with the base 6
1 can be installed in a stable state.

A ... Existing folding plate shop, 1 ... Existing folding plate roof plate material, 2 ... Existing tight frame, 21 ... Leg part,
22 ... top part, 23 ... leg seat plate, 4 ... existing structural material, B ... modified folding board roof,
B1: Renovated tight frame, 6 ... Base, 61 ... Base plate, 62 ... Hanging side plate,
64 ... small notches 64, 65 ... spacers, 82 ... fastening screw parts, 7 ... receiving part main body.

Claims (6)

  An existing tight frame having two leg portions and a top portion formed at the lower end of a leg seat plate to be installed and fixed on an existing structural material, and an existing folded plate roof plate material supported by the existing tight frame In the existing folded plate roof, the existing folded plate roof plate material is removed from the existing tight frame, and a modified tight frame that can be attached by non-welding means is disposed on the leg seat plate between the adjacent existing tight frames. The modified tight frame is mounted on the existing structural material, and the folded plate roof plate material is mounted through the modified tight frame to construct the modified folded plate roof. Plate roof renovation method.   2. The folded plate roof according to claim 1, wherein the entire existing tight frame is left on the existing structural material, and the bottom of the modified folded plate roof is positioned above the top of the existing tight frame. Renovation method.   2. The folded plate roof repair method according to claim 1, wherein a part of the trapezoidal portion of the existing tight frame is cut, and the existing tight frame is repaired to be low in the height direction.   2. The folded plate roof repair method according to claim 1, wherein the existing tight frame is partly cut and removed from the structural material.   The modified tight frame according to any one of claims 1, 2, 3, or 4, wherein the modified tight frame includes a receiving portion main body, the receiving portion main body is installed, and a hanging side plate is formed on both sides in the width direction of the base plate. In addition, both the hanging side plates are provided with a pedestal in which a small cutout portion capable of accommodating the leg seat plate of the existing tight frame is formed, and a fastening screw portion having a U-shaped cross section and provided on the upper one side. The folded plate roof refurbishing method, wherein the pedestal is fixed on the pedestal, and the pedestal is installed on the existing structural material while accommodating the leg seat plate in the small notch. 5. The modified tight frame according to claim 1, wherein the modified tight frame includes a receiving portion main body, and the receiving portion main body is installed, and hanging side plates are formed on both sides in the width direction of the base plate. The pedestal is configured to be clamped and fixed to the pedestal through a U-shaped cross-section and a fastening screw portion provided on the upper side, and the leg seat is disposed between the existing structural material and the lower end of the pedestal. A folded plate roof refurbishing method characterized in that a spacer having a thickness equal to or greater than that of a plate is provided.

Images