JP4624288B2 - Method for assembling reinforcing structure of existing ALC vertical wall panel - Google Patents

Description

  In the present invention, for example, an ALC (lightweight cellular concrete) panel used as an outer wall material in an existing building such as a building, in particular, an existing ALC vertical wall panel in which a rectangular ALC panel is arranged vertically is attached due to deterioration over time. The present invention relates to a reinforcing structure that is applied when the proof stress of a part is reduced or the seismic performance is improved.

Buildings such as those described above have learned from past major earthquakes and their seismic performance has been strengthened, and the mounting structure of ALC panels on the building frame, that is, the mounting construction method, has shifted to a construction method that has improved seismic performance in response to the changing times. . For example, the insertion muscle construction method, which is one of the ALC vertical wall panel attachment construction methods, has been constructed in the past and has been improved as shown in Patent Document 1 below, but the seismic performance is not necessarily sufficient. There is a history of being abolished in 2002.

  FIG. 7 shows a construction example of the above conventional ALC vertical wall insertion reinforcement method. A base steel material 2 made of an angle material or the like is attached to an upper part of a beam material 1 made of an H-shaped steel or the like which is a building frame, and the base steel material. The ALC panel 4 is placed on the vertical plate 3 fixed to the side surface of the steel plate 2 by welding or the like, and the vertical joints of the ALC panels 4 and 4 adjacent to each other in the reinforcing bar insertion hole 3a and in the horizontal direction are formed in the vertical plate 3 The joint rebar 5 is arranged in J1, and the vertical joint J1 around the joint rebar 5 is filled with mortar 6 or the like and solidified.

  However, as described above, the vertical joints J1 of the ALC panels 4 and 4 that are horizontally adjacent to each other are filled with mortar and solidified so that the movement of the ALC panel is restricted in the event of an earthquake, etc. It is hard to say that it is excellent. Therefore, recently, many construction methods with good seismic performance such as rocking construction method and slide construction method have been adopted. However, it may not be desirable to continue using the ALC vertical wall panel constructed by the conventional insertion muscle construction method. is there.

  In addition, the ALC panel 1 may have a problem in the strength of the mounting portion due to a decrease in the strength of the base material due to deterioration over time or a past earthquake. That is, the ALC panel that has deteriorated over time generally decreases in physical properties, thereby reducing the strength. However, the degree of deterioration over time varies depending on the maintenance of the building and the environment in which it is placed, and it is not possible to determine when it should be appropriate for continued use in the future. The building needs to undergo appropriate maintenance after receiving a specialized deterioration diagnosis.

  In that case, even if the ALC panel has undergone considerable deterioration, the bending strength is designed to be sufficiently safe, so there is almost no problem, but the strength of the mounting part should be reinforced as required by detailed investigation. In addition, in order to cope with a large earthquake that is expected in the future, there are many cases where reinforcement measures considering the safety of existing ALC buildings are necessary for the global environment. However, most of the existing buildings are in use, and interior parts and indoor equipment are installed on the inner side of the outer wall, so there is a problem that reinforcement measures cannot be taken from the indoor side.

Japanese Patent Laid-Open No. 9-11129

The present invention has been proposed in view of the above-described problems, and an assembly method for a reinforcing structure of an existing ALC vertical wall panel that can easily reinforce an existing ALC vertical wall panel only from the outside thereof. The purpose is to provide.

In the method of assembling the reinforcing structure of the existing ALC vertical wall panel according to the present invention, a base steel material is attached to a building frame, a vertical plate is fixed to a side surface of the base steel material, an ALC panel is placed on the vertical plate, With respect to the existing ALC vertical wall panel in which the joint reinforcing bars are arranged in the reinforcing bar insertion hole of the vertical plate and in the vertical joint between the ALC panels adjacent in the horizontal direction, the horizontal joint portion between the ALC panels adjacent in the vertical direction is Reinforcing an existing ALC vertical wall panel that has a rod-shaped body fixed to the side surface of the base steel material, a support plate is attached via the rod-shaped body, and the ALC panel is sandwiched and fixed between the support plate and the base steel material A method for assembling a structure, which penetrates in a thickness direction of the ALC panel from an outer surface side of the ALC panel at a predetermined position of the ALC panel corresponding to a side surface of the base steel material. A first step of forming a through hole; a second step of inserting the rod-like body into the through-hole from the outer surface side of the ALC panel and fixing the rod-like body to the side surface of the base steel material by stud welding; and an end of the rod-like body A third part is inserted into the support plate, a nut is screwed into the end of the rod-like body from the outside of the support plate, and the ALC panel is sandwiched between the support plate and the base steel material to be fastened and fixed. And a fourth step of cutting the joint reinforcement between the vertical plate and the ALC panel below the vertical plate.

Rod-shaped body and the support plate to the underlying steel in construction of by lever to the present invention constructed as described above, even indoors in use, also even if decoration and indoor unit products from outdoors to indoors side only Can be attached. In addition, since the existing panel is sandwiched between the support plate attached to the side surface of the base steel material via a rod-like body and the base steel material, the size of the support plate, the number of installed rod-like bodies, etc. can be changed as appropriate. The support area by the support plate, the attachment strength by the rod-like body, and the like can be set arbitrarily and arbitrarily according to the required strength applied to the attachment portion.

  Furthermore, the fixed construction method can be transformed into a slide construction method by releasing the fixing means of the existing panel, such as by cutting a conventional joint reinforcement, or by creating a vertical expansion joint for each appropriate span. In addition, by reinforcing the mounting part of the existing ALC vertical wall panel as described above, it is possible to prevent the ALC panel from falling off due to a large earthquake and to prevent damage such as chipping and cracking. It becomes possible to continue to use things with peace of mind.

  Hereinafter, the present invention will be specifically described based on the embodiments shown in the drawings. 1A is a perspective view showing an embodiment of a reinforcing structure of an existing ALC vertical wall panel according to the present invention, FIG. 1B is an enlarged view of a portion b in FIG. 1A, and FIG. FIG.

  The present embodiment is applied to an existing ALC vertical wall panel constructed by the above-mentioned insertion reinforcement construction method, and the existing ALC vertical wall panel is a beam material made of H-shaped steel or the like which is a building frame as in the conventional example. A base steel material 2 made of an angle material or the like is attached to the upper part of 1 and an ALC panel 4 is placed on a vertical plate 3 fixed to the side surface of the base steel material 2 by welding or the like, and a reinforcing bar formed on the vertical plate 3 A joint rebar 5 is arranged in the insertion hole 3a and in the vertical joint J1 between the ALC panels 4 and 4 adjacent in the horizontal direction, and the vertical joint J1 around the joint rebar 5 is filled with mortar 6 or the like. It is a solidified structure.

  And the reinforcement structure by this invention attaches the support plate 8 via the rod-shaped body 7 fixed to the said base steel material 2 by stud welding etc., and sandwiches the said panel 4 between the support plate 8 and the said base steel material 2. FIG. In the case shown in the figure, a bolt is fixed to the side surface of the base steel material 2 by stud welding or the like as the rod-like body 7, and a nut 9 is screwed into the rod-like body 7 made of the bolt to thereby fix the support plate 8 and the base. The panel 4 is sandwiched between the steel material 2 and fastened and fixed. As shown in FIG. 1, the surface of the support plate 8 may be covered with a cover material 10 such as a decorative plate, a film, or a resin film as needed. A plurality of support plates 8 including the horizontal joint J <b> 2 are continuously covered with a band-shaped surface covering material 10 by the surface covering material 10.

In constructing the reinforcing structure, for example, construction may be performed in the following manner. That is, first, as shown in FIG. 2 (a), a hole h penetrating in the panel thickness direction from the outer surface side of the panel 4 at a predetermined position of the panel 4 corresponding to the side surface of the base steel material 2 with a drill or the like omitted in the drawing. Form. If there is no horizontal joint J2 at a position corresponding to the side surface of the base steel material 2 by another construction method or the like, the through hole h may be formed on the panel surface corresponding to the side surface of the base steel material 2.

  Next, as shown in FIG. 2 (b), the rod-like body 7 is inserted into the through hole h from the outer surface side of the panel 4 and the rod-like body 7 is fixed to the side surface of the base steel material 2 by stud welding or the like. In the present embodiment, a bolt is stud-welded to the side surface of the base steel material 2 as the rod-shaped body 7, and a male screw is formed in advance on the end 7 a opposite to the base steel material 2 of the rod-shaped body 7 made of the bolt. ing. Then, the end 7a of the rod 7 is inserted into a hole (not shown) formed in the support plate 8 as shown in FIG. 2 (c), and a nut 9 is screwed into the end 7a. The panel 4 can be clamped and fixed between the steel 8 and the base steel material 2.

  Next, when covering the surface of the support plate 8 with the surface material 10, the surface material 10 is formed wider than the support plate 8, for example, as shown in FIG. The support plate 8 is fitted and fixed, or both side edges of the cover material 10 are fixed to the panel surface with an aluminum cut nail or the like. Or you may make it fix the said cover material 10 using the said nut, but when it is made to cover with the cover material 10 including the said nut 9, the edge part 7a of the rod-shaped body 7, and the horizontal joint J2, it is an external appearance. It can be structured nicely.

  By fixing the panel 4 between the support plate 8 and the base steel material 2 as described above, the existing ALC vertical wall panel can be easily and reliably reinforced. As described above, since it can be performed only from the outside of the panel, that is, from the outdoor side, there is no problem even if the interior is in use, or if there are interiors or indoor equipment items indoors. In addition, by appropriately changing the size of the support plate 8 and the number of the rod-like bodies 7 installed, the support area by the support plate 8 and the mounting strength by the rod-like body 7 can be arbitrarily and selectively set. The required strength such as seismic strength can be easily secured.

  Furthermore, in the existing ALC vertical wall panel constructed by the insertion bar construction method as in the above embodiment, the joint reinforcing bar 5 is placed at an appropriate position, for example, the vertical plate 3 as shown in FIG. The fixing state of the existing panel is appropriately released by inserting a cutter or the like between the panel 4 from the direction of the arrow in the figure and cutting it, and the expansion joint 11 is partially formed in the vertical joint J1 as shown in FIG. Etc., and each panel 4 is configured to be movable in the in-plane direction. For example, in the present invention, the conventional panel 4 cannot be moved during an earthquake or the like. As shown in a) and (b), each panel 4 can be slid or moved to reduce the impact. Accordingly, the fixed construction method such as the conventional insertion muscle construction method can be transformed into a construction method or structure having good earthquake resistance and durability such as a slide construction method. In addition, by reinforcing the mounting part of the existing ALC vertical wall panel as described above, it becomes possible to prevent the ALC panel from falling off due to a large earthquake and to prevent damage such as chipping and cracking. Can be used continuously with peace of mind.

  Although the said embodiment used the strip-shaped thing as the support plate 8, you may use a long strip | belt-shaped thing. FIG. 5 shows an example thereof. FIG. 5 (a) is a perspective view showing another embodiment of the reinforcing structure of the existing ALC vertical wall panel according to the present invention, and FIG. 5 (b) is a view of part b in FIG. An enlarged view and the same figure (c) are sectional views of the principal part.

  In the present embodiment, a long strip-shaped support plate 8 is disposed along the horizontal joint J2 of the existing ALC vertical wall panel 4 constructed by the insertion muscle construction method, and the base steel material is provided on the support plate 8 in the same manner as in the above-described embodiment. 2 is inserted between the support plate 8 and the base steel material 2 by a nut 9 screwed into the tip of the rod-like body 7. The panel 4 is clamped and fixed. The rod-like body 7 and the nut 9 are provided one by one in the center portion in the panel width direction between the panels 4 and 4 arranged vertically. Other configurations are the same as those of the embodiment of FIG.

  In constructing the above reinforcing structure, it may be constructed in substantially the same manner as in the above embodiment, and first, at a predetermined position of the panel 4 corresponding to the side surface of the base steel material 2 as shown in FIG. A hole h penetrating in the panel thickness direction from the outer surface side of the panel 4 is formed by a drill or the like omitted in the drawing. Next, as shown in FIG. 6B, the rod-like body 7 is inserted into the through hole h from the outer surface side of the panel 4, and the rod-like body 7 is fixed to the side surface of the base steel material 2 by stud welding or the like. The end 7a of the body 7 is inserted into a hole (not shown) formed in the support plate 8 as shown in FIG. 3C, and the nut 9 is screwed into the male screw formed in the end 7a of the rod-like body 7. Thus, the panel 4 is clamped and fixed between the support plate 8 and the base steel material 2.

  Next, the surface of the support plate 8 is covered with a surface covering material 10 such as a decorative plate, a film, or a resin film as necessary. In this case, the surface covering material 10 is coated as shown in FIG. What is necessary is just to arrange | position so that the support plate 8 may be covered, and to fix or fix the surface covering material 10 to the panel surface etc. in the same way as the said embodiment.

  Also in the embodiment of FIGS. 5 and 6, the same effect as that of the embodiment of FIGS. 1 and 2 can be obtained. In each of the above embodiments, a bolt is used as the rod-like body 7. However, for example, a cylindrical member such as an anchor sleeve is used, and the support plate 8 is tightened by screwing the bolt into a female screw formed on the inner peripheral surface thereof. It may be fixed.

  As described above, according to the present invention, the existing ALC vertical wall panel can be easily and reliably reinforced from the outside of the building. For example, the seismic performance of the ALC vertical wall panel as in the conventional insertion muscle construction method is used. ALC vertical wall panels in existing buildings that can be constructed without any burden on residents and users even if they are existing buildings that are not necessarily sufficient in durability or panel mounting strength. As a reinforcing structure, it can be used extremely effectively and appropriately in industry.

(A) is a perspective view which shows one Embodiment of the reinforcement structure of the existing ALC vertical wall panel by this invention, (b) is an enlarged view of the b section in (a), (c) is sectional drawing of the principal part. (A)-(d) is explanatory drawing which shows the construction process of the said reinforcement structure. Explanatory drawing which shows an example of the cutting | disconnection location of a joint reinforcement. (A) And (b) is explanatory drawing which shows the movement state of the panel at the time of an earthquake etc. FIG. (A) is a perspective view which shows other embodiment of the reinforcement structure of the existing ALC vertical wall panel by this invention, (b) is an enlarged view of the b section in (a), (c) is sectional drawing of the principal part. (A)-(d) is explanatory drawing which shows the construction process of the said reinforcement structure. (A) is a perspective view which shows the construction example of the conventional existing ALC vertical wall panel, (b) is an enlarged view of the b section in (a), (c) is sectional drawing of the principal part.

1 Beam material (building frame)
2 Base steel material 3 Vertical plate 3a Reinforcing bar insertion hole 4 ALC panel 5 Joint reinforcement 6 Mortar 7 Rod-like body 7a End 8 Support plate 9 Nut 10 Expansion joint 11 Through joint J Through hole J1 Long joint J2 Horizontal joint

Claims (1)

A base steel material is attached to the building frame, a vertical plate is fixed to the side surface of the base steel material, an ALC panel is placed on the vertical plate, and the ALC panel is adjacent to the reinforcing bar insertion hole and in the lateral direction of the vertical plate. For the existing ALC vertical wall panel where joint reinforcement is arranged in the vertical joint between
At a horizontal joint portion between the ALC panels adjacent in the vertical direction, a rod-shaped body is fixed to the side surface of the base steel material, a support plate is attached via the rod-shaped body, and the support plate and the base steel material are A method for assembling a reinforcing structure of an existing ALC vertical wall panel that is fixed with an ALC panel interposed therebetween,
A first step of forming a through-hole penetrating in a thickness direction of the ALC panel from an outer surface side of the ALC panel at a predetermined position of the ALC panel corresponding to a side surface of the base steel material;
A second step of inserting the rod-like body into the through-hole from the outer surface side of the ALC panel and fixing it to the side surface of the base steel material by stud welding;
With the end of the rod-shaped body inserted into the support plate, a nut is screwed into the end of the rod-shaped body from the outside of the support plate, and the ALC panel is sandwiched between the support plate and the base steel material A third step of tightening and fixing;
A fourth step of cutting the joint reinforcement between the vertical plate and the ALC panel below the vertical plate;
A method for assembling a reinforcing structure for an existing ALC vertical wall panel, comprising:

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