JP6841683B2 - Folded plate roof repair method - Google Patents

Description

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

In recent years, many buildings constructed in the past have deteriorated all at once, and such deteriorated buildings tend to increase. In particular, the roof is exposed to the harshest conditions, so it is particularly aging compared to other parts. Therefore, it is expected that the number of repair works for such dilapidated buildings will increase in the future.

In particular, the number of old metal folded-plate roofs is increasing, and its repair is needed. There are various construction methods for the repair. In general, the renovation work is to construct a new roof as it is on the existing roof, or to remove the existing roof and then construct a renovated folded plate roof (new folded plate roof). The type in which a renovated (new) roof is laid on top of an existing roof is often used because it is easy and inexpensive. In this way, it is often adopted to lay a renovated (new) roof on the existing roof, and this kind of technological development is also being carried out a lot. However, there are various conditions for performing repair work, such as whether or not the existing tight frame that supports the existing roof can still be used sufficiently even if it has been used for many years. ..

Japanese Unexamined Patent Publication No. 2014-40720

On the other hand, there are cases where it is dangerous and inconvenient to lay a renovated (new) roof on the existing roof while removing all or part of the extremely old existing roof. For example, in a building such as a factory or a warehouse where a ceiling plate or the like is not provided under the existing roof, the metal folded plate roof plate material or related parts constituting the old existing roof is corroded. Some may fall into the room.

In such a state, the worker will work in a dangerous situation inside the building. Therefore, there are a method of removing only the existing folded plate roof plate material and roofing the repaired (newly installed) folded plate roof plate material, and a method of removing and repairing the entire existing tight frame. If it is confirmed that the existing tight frame cannot be reused due to aging, the latter method will be selected.

However, in an old building having a metal roof, the tight frame supporting the metal roof plate is often fixed to the existing steel frame structural material such as a beam or a main building by welding. Therefore, the work of removing the tight frame from the existing structural material may cause sparks during cutting to remove the welded part, or the removed object may fall from a high place. 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 roof a repaired roof (which may be referred to as a new folded-plate roof). It is to provide a renovated folded plate roof construction method.

Therefore, as a result of diligent research to solve the above problems, the inventor applied the invention of claim 1 to two legs having a leg seat plate installed and fixed on an existing structural material at the lower end. In an existing folded plate roof provided with an existing tight frame having a top and an existing folded plate roof plate material supported by the existing tight frame, the existing folded plate roof plate material is removed from the existing tight frame and adjacent to the existing tight frame. A repaired tight frame that can be mounted by non-welding means is arranged on the leg seat plate between the existing tight frames, the repaired tight frame is mounted on the existing structural material, and repair is performed via the repaired tight frame. The above-mentioned problem was solved by adopting the folding plate roof repair method in which the above-mentioned folded plate roof plate material for the purpose was attached and the repaired folded plate roof was constructed.

A fold according to claim 1, wherein the entire existing tight frame is left on the existing structural material, and the bottom of the repaired folded plate roof is located above the top of the existing tight frame. The above problem was solved by adopting the plank roof repair method. The above problem is solved by using the invention of claim 3 as a folded plate roof repair method in which a part of the existing tight frame is cut and the existing tight frame is repaired low in the height direction in claim 1. did.

The above-mentioned problem is solved by using the invention of claim 4 as a folding plate roof repair method in which the existing tight frame is partially cut and removed from the structural material in claim 1. The invention of claim 5 is described in any one of claims 1, 2, 3 or 4, wherein the repaired tight frame has a receiving portion main body and the receiving portion main body is installed on both sides in the width direction of the base plate. A pedestal on which a hanging side plate is formed and a small notch for accommodating the leg seat plate of the existing tight frame is formed on both of the hanging side plates, and a U-shaped cross section and provided on one side of the upper side. The pedestal is configured to be fastened and fixed to the pedestal via a tightening screw portion, and the pedestal is installed on the existing structural material while accommodating the leg pedestal plate in the small notch portion. The above problem was solved by adopting the construction method.

In the description of any one of claims 1, 2, 3 or 4, according to the invention of claim 6, the repaired tight frame has a receiving portion main body and the receiving portion main body is installed on both sides in the width direction of the base plate. A pedestal on which a hanging side plate is formed and a pedestal having a U-shaped cross section and a tightening screw portion provided on one side of the pedestal are fastened and fixed to the pedestal. The above-mentioned problem was solved by adopting a folding plate roof repair method in which a spacer having a plate thickness dimension equal to or larger than that of the leg seat plate was provided between the two.

In the invention of claim 1, after removing the folded plate roof plate material from the trapezoidal existing tight frame having two legs and the top arranged at predetermined intervals on the existing structural material, it remains on the existing structural material. A repaired tight frame that can be mounted by non-welding means is mounted on the leg seat plate of the existing tight frame, and a repaired folded plate roof plate material is mounted via the repaired tight frame to construct a repaired folded plate roof. Is what you do. As a result, the number of steps required for the dismantling work of the existing folded-plate roof can be reduced, and the repaired folded-plate roof can be constructed, the work efficiency in the construction of the repaired folded-plate roof can be improved, and the construction can be extremely simplified.

In the invention of claim 2, the folded plate roof repair method is adopted in which the entire existing tight frame is left on the existing structural material and the bottom of the repaired folded plate roof is located above the top of the existing tight frame. As a result, the dismantling of the existing folded-plate roof can be minimized and the repaired folded-plate roof can be constructed, which makes the repair work even easier and greatly reduces the burden on the workers involved in this work, which is extremely small. A repaired (newly installed) folded-plate roof can be constructed in the process.

In the invention of claim 3, a part of the trapezoidal portion of the existing tight frame is cut, and the existing tight frame is lowered in the height direction by adopting a folded plate roof repair method for repairing the existing tight frame in the height direction. It is possible to use a low-height repaired tight frame, and it is possible to construct a repaired folded-plate roof that is almost the same as 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 repaired folded plate roof can be set low in the height direction. As a result, the height of the receiving portion of the repaired tight frame can be made low, and a repaired folded-plate roof that is substantially the same as the existing folded-plate roof can be constructed.

In addition, in buildings such as factories and warehouses where the steel beams that support the roof are exposed due to the removal of the trapezoidal part of the existing tight frame, the existing tight frame on the existing structural material when viewed from below The remaining part of is hidden by the existing structural material. Therefore, when looking up from below, the remaining portion of the existing tight frame on the existing structural material becomes invisible, and it is possible to prevent the aesthetic appearance of the ceiling from being spoiled.

In the invention of claim 5, in the repaired tight frame, the repaired tight frame is formed by forming small notches capable of accommodating the leg seat plate of the existing tight frame on both the hanging side plates of the pedestal. , It can be installed in a stable state on the existing structural material without interfering with the leg seat plate 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) to (D) are front views which show the process of constructing the refurbished folded plate roof of the tightening type based on the 1st Embodiment of the construction method of this invention. (A) to (E) are front views which show the process of constructing the refurbished folded plate roof of the tightening type based on the 2nd Embodiment of the construction method of this invention. (A) is an enlarged front view of the state where the repaired tight frame according to the construction method of the first embodiment of the present invention is attached, and (B) is a state where the repaired tight frame according to the construction method of the second embodiment of the present invention is attached. An enlarged front view, (C) is an enlarged front view of a state in which a repaired tight frame according to another construction method of the second embodiment of the present invention is attached. (A) is a perspective view of the repaired tight frame, (B) is a side view of the repaired tight frame, and (C) is a side view of a main part of the repaired tight frame attached to a flange of an existing structural material. (D) is a side view of a main part which is a partial cross section of a repaired tight frame mounted on a flange of an existing structural material by using a spacer. (A) to (D) are front views showing the steps of constructing a polymerization type refurbished folded plate roof based on the first embodiment of cutting of the present invention.

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

The existing folded plate roof A includes an existing folded plate roof plate material 1 and an existing tight frame 2. The repaired folded plate roof B is a repaired tight frame B1 that can be attached to the existing structural material 4 without welding, and repaired (repaired.
It is provided with a folded plate roof plate material 5 for (new installation). In the present invention, the non-welding means means a means for fixing to the flange portion 41 of the existing structural material 4 by a fixing method such as locking or fitting without using welding. The existing structural material 4 is used for the construction of the repaired 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 repaired folded plate roof B have various types of folded plates, and are a tightening type (see FIG. 1) and a polymerization type in which trapezoidal chevron portions are polymerized and connected (FIG. 1). 5) and the like exist. The folded plate roof plate material 1 constituting the existing folded plate roof A and the folded plate roof plate material 5 constituting the repaired folded plate roof B both have the same structure.

Here, in order to distinguish each of the folded plate roofing materials constituting the existing folded plate roof A and the repaired folded plate roof B, the existing folded plate roof plate materials constituting the existing folded plate roof A are simply referred to as the folded plate roof. It is referred to as a plate material 1, and the folded plate roof plate material for repair or new construction constituting the repaired folded plate roof B is simply referred to as a folded plate roof plate material 5.

The existing folded-plate roof A is constructed as a tightening type roof on an existing structural material 4 such as a purlin via an existing tight frame 2 and a hanger 3 [see FIG. 1 (A)]. Here, the longitudinal direction of the folded plate roof plate material 1 and the folded plate roof plate material 5 is referred to as the X direction, and the direction orthogonal to the longitudinal direction is referred to as the 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). Further, in FIGS. 1, 2, 3 and 5, the X direction is a direction orthogonal to the paper surface on which the figure is drawn, and therefore, the illustration in 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), and top portions 13 and 13 are formed from both ends of the compatible ascending side portions 12 and 12 from one end of the top portions 13 and 13. The lower ridge 14a is formed, and the upper ridge 14b is formed at the end of the other top 13 [see FIGS. 1 (A) and 2 (A)]. The main plate 11, the rising side portion 12, and the top portion 13 of the folded plate roof plate material 1 form a structure in which a plurality of chevron portions are continuous at a predetermined interval in the existing folded plate roof A, and the main plate 11 constitutes the bottom portion and rises. A chevron portion is formed by a side portion 12 and a top portion 13 [see FIGS. 1 (A) and 2 (A)].

Further, in the folded plate roof plate material 5 constituting the repaired folded plate roof B, rising side portions 52 and 52 are formed from both side portions of the main plate 51 in the Y direction (width direction), and top portions from both ends of the compatible rising side portions 52 and 52. 53, 53 are formed, a lower roof portion 54a is formed from one end of the top portions 53, 53, and an upper roof portion 54b is formed at the end of the other top portion 53. The main plate 51, the rising side portion 52, and the top portion 53 of the folded plate roof plate material 5 form a structure in which a plurality of chevron portions are continuous at a predetermined interval in the repaired folded plate roof B, and the main plate 51 constitutes the bottom portion and rises. A chevron portion is formed by a side portion 52 and a top portion 53 [see FIGS. 1 (D) and 2 (E)].

The existing tight frames 2 are mounted at predetermined intervals along the Y direction of the flange 41 of the existing structural member 4 [see FIGS. 1 (A) and 2 (A)]. Then, a plurality of existing folded plate roof plate materials 1, 1 ... Are arranged side by side on the existing tight frames 2, 2, ... The lower plate portion 14a and the upper plate portion 14b of the adjacent folded plate roof plates 1 and 1 are fastened together with the hanger 3 and fixed on the existing tight frame 2. The existing folded plate roof A is configured with such a configuration [see FIGS. 1 (A) and 2 (A)]. The existing structural material 4 is a structural steel, and H-section steel, I-section steel, channel steel, or the like is used.

The laminated type existing folded plate roof A has trapezoidal half-mountain-shaped chevron portions 15 and 15 at both ends in the Y direction of the main plate 11 of the folded plate roof plate material 1. Then, the existing folded plate roof A is formed by superimposing the chevron portions 15, 15 of the adjacent folded plate roof plate members 1, 1 with each other [see FIG. 5 (A)]. In this case, the top of the existing tight frame 2 is formed to be flat, and the bolt shaft portion 24 is provided. Then, the peaks of the chevron portions 15 and 15 are overlapped with each other, and the bolt shaft portion 24 penetrates between the summit portions, and the nut is tightened and fixed to the bolt shaft portion 24.

Similarly, the folded plate roof plate material 5 in the repaired folded plate roof B also has chevron portions 55 and 55 on both sides in the Y direction. Then, the repaired folded plate roof B is constructed by superimposing the chevron portions 55, 55 of the adjacent folded plate roof plate members 5, 5 with each other [see FIG. 5 (D)]. In this case, the top 73 of the existing tight frame 2 is formed to be flat, and the bolt shaft portion 74 is provided on the top 73. Then, the peaks of the chevron portions 55 and 55 are overlapped with each other, and the bolt shaft portion 74 penetrates between the summit portions, and the nut is tightened and fixed to the bolt shaft portion 74 [FIG. 5 (D). )reference〕.

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

In both the first and second embodiments, there is an operation of separating the lower seaming portion 14a and the upper seaming portion 15b of the existing folded plate roof plate members 1 and 1 adjacent to the existing tight frame 2. [See FIGS. 1 (A), 1 (B), 2 (A), (B)]. At this time, the hanger 3 is also separated from the existing tight frame 2 together with the lower sill portion 14a or the upper sill portion 14b. Then, a large number of existing tight frames 2, 2, ... Remain on the flange 41 of the existing structural member 4.

Here, the existing tight frame 2 is composed of two legs 21 and 21 and a top 22. Leg seat plates 23, 23 are formed at the lower ends of both legs 21 and 21. The top portion 22 and both leg portions 21 and 21 form 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 both legs 21 and 21 of the strip 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 is fixed by a fixing means such as welding. The existing tight frame 2 may be a single unit or a plurality of existing tight frames 2 may be continuous by the leg seat plate 23.

In the first embodiment of 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), (B)]. Then, the entire existing tight frame 2 is left on the existing structural material 4. The repaired tight frame B1 is installed on the leg seat plate 23 of the existing tight frame 2 left on the existing structural material 4 [see FIG. 1 (C)]. The details of the repaired tight frame B1 will be described later, but the welding means is not adopted when mounting and installing the existing structural material 4. That is, the repaired tight frame B1 is a non-welded type.

Next, the folded plate roof plate material 5 for repair is arranged on the top 73 of the repair tight frame B1, and the lower plate roof plate material 5 is fastened to the upper plate portion 54a and the upper plate portion 54b via the hanger 3. , 5 are connected to each other, and this is repeated in sequence to construct the repaired folded plate roof B [see FIG. 1 (D)]. At this time, the main plate 51 of the folded plate roof plate material 5 constituting the repaired folded plate roof B, that is, the portion serving as the bottom portion (main plate 51) of the repaired folded plate roof B is at the same position or substantially the same position as the top of the existing tight frame 2. And the configuration is located above [see FIGS. 1 (D) and 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 as it is on the existing structural material 4, so that it is removed. The number of steps required for the work is reduced, and the repaired folded plate roof B can be constructed in an extremely short period of time, and the construction can be simplified.

In the second embodiment of 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. 2]. See (A) and (B)]. Up to this point, it is the same as the first embodiment of construction. Next, a part of the trapezoidal portion of the existing tight frame 2, that is, either the legs 21 or 21 or the top 22 is cut, and the height direction of the existing tight frame 2 is processed so as to be lower than the original height. It is a thing. Here, cutting a part of the trapezoidal portion of the existing tight frame 2 means a portion to be cut, and does not necessarily cut only one portion of the trapezoidal portion, and cuts a plurality of locations of two or more locations. It also includes cutting.

When a part of the existing tight frame 2 is removed, at least a part of the trapezoidal part composed of the legs 21 and 21 and the top 22 of the existing tight frame 2 is cut. Then, along with the cutting, a process of lowering the existing tight frame 2 from the original height in the height direction is performed.

The process of lowering the height 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 removed from the flange 41 of the existing structural material 4. It means that the remaining portion is lowered in the height direction by a deforming means such as pushing it down. There is one or more cuts to the existing tight frame 2.

The cutting machine 9 used for cutting is preferably a handheld type, small in size, and lightweight. The cutting operation (means) of the cutting machine 9 is shearing. As the cutting machine 9, a blade member that is movable with 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 a manual mechanism. From the viewpoint of fire prevention, it is preferable not to use disc-shaped grindstones that rotate at high speed, saws, and those that generate high temperature, ignitability, and chips such as fusing with gas for cutting work.

There are roughly three types of cutting points for the existing tight frame 2 by the cutting machine 9. First, each of the legs 21 and 21 of the existing tight frame 2 is cut near the root of the existing structural member 4 [see FIGS. 2 (B) and 2 (C)]. 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 member 4 is a small one below both legs 21 and 21. Become a department.

A 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 have only the lower portion remaining, which is considerably lower than the original height of the existing tight frame 2 and is considerably lower in the height direction. The process of lowering the flange to is completed with the cutting of both legs 21 and 21 [see FIG. 3 (B)].

The second and third are cutting at the upper position of both legs 21 and 21 of the existing tight frame 2 and cutting of the top 22. Since the portions of both legs 21 and 21 of the existing tight frame 2 left on the flange 41 exist up to the vicinity thereof, the existing tight frame 2 can be pushed down by pushing both legs 21 and 21 toward the other side. Make the height direction lower than the original height [see FIG. 3 (C)].

When the cutting work of the existing tight frame 2 and the process of lowering the height direction are completed, the leg seat plate 23 remaining on the flange 41 of the existing structural material 4 is repaired to the tight frame B1.
[See Fig. 2 (D)]. 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 B1 is installed on the remaining leg seat plate 23. Then, the existing tight frame 2 is repaired and the folded plate roof B is constructed [see FIG. 2 (E)].

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

As described above, the repaired tight frame B1 is a non-welding type that is attached to the existing structural material 4 without using welding. Various such repaired tight frames B1 exist, and an example thereof will be described. The repaired tight frame B1 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, 62. Two through holes 63, 63 are formed in the base plate 61 along the longitudinal direction at predetermined intervals [see FIG. 4 (A)].

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

That is, by forming the small notches 64 and 64 on the both hanging side portions 62 and 62 of the pedestal 6, the repair tight frame B1 is placed on the flange portion 41 of the existing structural member 4 by the leg seat plate 23.
The pedestal 6 and the pedestal plate are accommodated in the small notches 64 and 64 of the existing tight frame 2 [see FIG. 4 (C)] even if the pedestal plate 23 is placed in the remaining portion. The repaired tight frame B1 can be installed at 23 positions of the leg seat plate on the existing structural member 4 in an extremely stable state without interfering with the 23.

Next, the receiving portion main body 7 is formed in a plate shape and a pillar shape, and is installed at a central position in the longitudinal direction (X direction) of the base plate 61 of the pedestal 6. The columnar portion 71 of the receiving portion main body 7 has a base portion 72 and a top portion 73. The columnar portion 71 rises vertically on the base plate 61. The shape of the top portion 73 is a stepped shape or a flat shape, and when the folding plate roof plate material 5 for repair of the tightening type is used, a hanger 3 is required, so the stepped shape is preferable.

A bolt shaft portion 74 is attached to the top portion 73 as needed, and is used for attaching the hanger 3. In the construction method of the first embodiment, the receiving portion main body 7 has a large dimension in the height direction [see FIGS. 1 (C), 1 (D), 3 (A)]. Specifically, the height direction dimension of the receiving portion main body 7 is equal to or larger than the sum of the heights of the existing folded plate roof A and the repaired folded plate roof B.

The locking member 8 is composed of a locking body 81 having a substantially U-shaped cross section and a tightening screw portion 82. The locking body 81 is a member obtained by forming a metal plate material into a substantially U-shaped cross section, and both ends of the flange portion 41 of the existing structural member 4 in the X direction can be inserted into the U-shaped locking member 3. There is. A tightening screw portion 82 is attached to the upper piece of the locking body 81, and the tightening screw portion 82 is composed of a screw shaft portion 82a and a nut 82b, and the nut 82b is screwed into the screw shaft portion 82a. It is configured to do.

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

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

In addition, small notches 64, in both hanging side portions 62, 62 of the pedestal 6 of the repaired tight frame B1.
There are also embodiments in which 64 is not formed [see FIG. 4 (D)]. In this embodiment, the spacer 65 is used. The spacer 65 has a thickness dimension equal to or larger 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.

Then, the spacers 65 are arranged on the flange portion 41 and on both sides of the leg seat plate 23 in the X direction, respectively. The spacer 65 is sandwiched 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 repaired tight frame B1
The repaired tight frame B1 is attached to the flange portion 4 of the existing structural material 4 without interfering with the pedestal 6 of the above.
It can be installed in a stable state in 1.

A ... Existing folded plate shop, 1 ... Existing folded plate roof plate material, 2 ... Existing tight frame, 21 ... Legs,
22 ... Top, 23 ... Leg seat plate, 4 ... Existing structural material, B ... Repaired folded plate roof,
B1 ... Repair tight frame, 6 ... Pedestal, 61 ... Base plate, 62 ... Hanging side plate,
64 ... Small notches 64, 65 ... Spacers, 82 ... Tightening screw parts, 7 ... Receiving part main body.

Claims (6)

It is provided with an existing tight frame having two legs and a top having a leg seat plate installed and fixed on an existing structural material at the lower end, 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 repaired tight frame that can be mounted by non-welding means is placed on the leg seat plate between the adjacent existing tight frames. Then, the repaired tight frame is mounted on the existing structural material, and the folded plate roof plate material for repair is mounted via the repaired tight frame to construct the repaired folded plate roof. Plate roof repair method. The folded plate roof according to claim 1, wherein the entire existing tight frame is left on the existing structural material, and the bottom portion of the repaired folded plate roof is located above the top of the existing tight frame. Repair method. 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 low in the height direction. The folded plate roof repair method according to claim 1, wherein the existing tight frame is partially cut and removed from the structural material. In the description of any one of claims 1, 2, 3 or 4, in the repaired tight frame, a receiving portion main body and the receiving portion main body are installed, and hanging side plates are formed on both sides in the width direction of the base plate. Further, both of the hanging side plates are provided with a pedestal having a small notch for accommodating the leg seat plate of the existing tight frame, and a tightening screw portion having a U-shaped cross section and provided on one side of the upper side. A folded plate roof repair method, characterized in that the pedestal is fastened and fixed to the pedestal, and the pedestal is installed on the existing structural material while accommodating the leg pedestal plate in the small notch. In the description of any one of claims 1, 2, 3 or 4, in the repaired tight frame, a receiving portion main body and the receiving portion main body are installed, and hanging side plates are formed on both sides in the width direction of the base plate. The pedestal is configured to be fastened and fixed to the pedestal via a pedestal having a U-shaped cross section and a tightening screw portion provided on one side of the upper side, and the pedestal is located between the existing structural material and the lower end of the pedestal. A folded plate roof repair method characterized in that spacers having a plate thickness equal to or greater than that of a plate are provided.

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