JP4770700B2 - Exterior wall repair method - Google Patents

Description

  The present invention mainly relates to a method for repairing an outer wall in a building having a steel frame structure.

  Conventionally, when refurbishing the outer wall part of a steel frame structure building that has been built many years after construction, there are methods for applying a new coating to the outer wall surface and for attaching a new outer wall panel on the existing outer wall panel. Are known.

  However, in the method of applying paint, there is a limit to the kind of painting, and not only the design expression is limited, but also there is a drawback that it is necessary to take measures against paint scattering and odor countermeasures in the vicinity during painting work.

  On the other hand, the method of affixing the new outer wall panel is a state where the existing outer wall panel and the new outer wall panel overlap each other, so that the wall thickness increases and the outer wall surface protrudes greatly. There is a drawback that special consideration is required for the connection with other exterior members such as.

  As a method other than the above, for example, as disclosed in Patent Document 1, there is a method of removing an existing outer wall panel attached to a shaft assembly and attaching a new outer wall panel to the shaft assembly. In this case, although the renovation work is larger than the above method, there is no need to consider measures against paint scattering and odors in the vicinity, and there is an advantage that no special consideration is required when dealing with other exterior members. There is.

JP 2003-64884 A

  However, when the existing outer wall panel is replaced with a new outer wall panel, there are the following problems. In other words, at the beginning of building construction, an unpatterned outer wall panel was used, but when it was renovated, if it was replaced entirely with a patterned outer wall panel with vertical and horizontal orientation, which has become the mainstream in recent years, For convenience, it may not be possible to prepare a wide patterned outer wall panel. For this reason, for example, when replacing an unpatterned outer wall panel with a wide width (for example, about 2 m in width) used on a window or under a window with a patterned outer wall panel, a wide unpatterned outer wall panel is used. Although the construction is such that two narrow outer wall panels (for example, the width dimension is about 1 m) are mounted side by side on the shaft after the panel is removed, in this case, the adjacent outer wall with the handle Since the end of the panel is located at the approximate center in the width direction of the shaft assembly and there is no member to support these ends, there is a problem that the attachment of the handle-attached outer wall panel to the shaft assembly becomes unstable was there.

  At present, there is no established technology for solving such problems, and most of them are left to the field, which causes deterioration of workability, lengthening the work time, and mounting of outer wall panels. There was a problem in that the strength and mounting accuracy varied.

  In view of the above, the present invention removes the existing wide outer wall panel attached to the shaft assembly, and installs a plurality of narrow new outer wall panels side by side on the shaft assembly. The purpose of this is to provide a repair method that can improve the workability and can attach the new outer wall panel stably.

In order to solve the above-mentioned problems, the outer wall repairing method according to the present invention removes the wide existing outer wall panel 2 attached to the shaft set 1 and reduces the width of the existing outer wall panel 2 to the shaft set 1 . After mounting the pair of new outer wall panels 3 and 3 having a half width side by side, the receiving members 10 and 10, the fixing member 11, and the base member 12 are prepared and the existing outer wall panel 2 is removed. The base member 12 is disposed in the groove of the reinforcing middle column 8 made of channel steel with a lip disposed in the center of the shaft 1 in the width direction, and the receiving member 10 is disposed on the base member 12. , by attaching stop 10 and the fixed member 11, these receiving members 10 and the fixing member 11 is attached into said column 8, the end portion 3a of the new outer side wall panels 3, 3 adjacent to 3a, the receiving As Ategau the timber 10, 10, characterized in that fixed by the fixing member 11.

  The receiving members 10 and 10 are formed by connecting a fixed piece 30 and a receiving piece 31 in a substantially L shape, and the fixed piece 30 is overlapped on the web 8a or the lips 8c and 8c of the middle column 8. In the state, it is fixed to the base member 12 by a fixing bolt 32, and the receiving piece 31 is arranged substantially flush with the outer flange 8 b of the middle column 8.

  Furthermore, the fixing member 11 includes a base 40 and pressing pieces 42 and 42 rotatably attached to the base 40, and the base 40 is placed on the surface of the flange 8 b on the outer side of the middle column 8. The new outer wall panel 3 adjacent to the receiving pieces 31, 31 of the receiving members 10, 10 by fixing the holding pieces 42, 42 to the base member 12 with the fixing bolts 43 in the arranged state. The end portions 3a, 3a of the adjacent new outer wall panels 3, 3 are fixed by rotating so as to sandwich the end portions 3a, 3a.

Furthermore, a joint material 50 for closing the joint gap between the end portions 3a and 3a of the adjacent new outer wall panels 3 and 3 is attached to the middle column 8 of the shaft assembly 1 .

  In the outer wall repairing method according to the present invention, when the wide existing outer wall panel attached to the shaft assembly is removed and a plurality of narrow new outer wall panels are installed side by side on the shaft assembly, the end portions of the adjacent new outer wall panels are arranged. Is fixed by the fixing member so as to be applied to the receiving member attached to the middle column of the shaft assembly.For example, in the case of replacing the non-patterned outer wall panel with the patterned outer wall panel, it is left to the field. The newly constructed outer wall panel can be stably attached to the shaft assembly while clarifying the ambiguous technology, improving workability and shortening the construction time.

  In addition, by using the base member provided in the groove of the middle pillar of the shaft assembly, the receiving member and the fixing member are attached to the middle pillar, so that the workability is further improved and the end of the adjacent new outer wall panel is placed in the middle. It can be stably fixed to the pillar.

  Furthermore, waterproofness can be improved by attaching a joint material to the middle pillar of the shaft assembly so as to close the joint gap between the ends of the adjacent new outer wall panels.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the method of repairing an outer wall according to one embodiment of the present invention, as shown in FIG. 1, the existing outer wall panel 2 with a non-adjusted pattern attached to the steel frame 1 of the steel frame structure is removed. The new outer wall panel 3 with a handle is attached to the shaft 1. In particular, on the upper side and the lower side of the window 4, the existing outer wall panel 2 having a wide width (for example, a width of about 2 m) attached to the shaft set 1 is removed, and a pair of narrow widths (for example, the width) are removed from the shaft set 1. New outer wall panels 3 and 3 having a dimension of about 1 m) are mounted side by side.

  As shown in FIG. 2, the shaft assembly 1 for mounting the new outer wall panels 3 and 3 side by side includes a rectangular frame-shaped frame member 5 and a pair of upper and lower horizontal members 6 and 6 mounted in the frame of the frame member 5. And a reinforcing medium that connects between the center part of the upper frame member 5a and the upper cross member 6 of the frame member 5 and between the lower frame member 5b of the frame member 5 and the central part of the lower cross member 6 respectively. The pillars 8 and 8 are assembled together.

  And the window 4 is attached between the up-and-down horizontal members 6 and 6 in this shaft set 1, and between the upper frame material 5a of the frame member 5 located in the upper side, and the upper horizontal material 6 and on the lower side. The existing outer wall panel 2 and the new outer wall panels 3 and 3 are exchanged between the lower frame member 5b of the frame member 5 and the lower cross member 6 respectively.

  Here, when the new outer wall panels 3 and 3 are attached, the shaft assembly is used by using a fixing bracket or the like while the peripheral end portion is applied to the outer surface of the shaft assembly 1 in the same manner as when the existing outer wall panel 2 is attached. 1, the end portions 3 a and 3 a of the newly installed outer wall panels 3 and 3 that are positioned substantially at the center in the width direction of the shaft set 1 are the middle pillars 8 that are disposed at the substantially center in the width direction of the shaft set 1. , 8 alone cannot support it.

  Therefore, as shown in FIGS. 3 and 4, a pair of receivers for receiving the end portions 3a and 3a of the adjacent new outer wall panels 3 and 3 are provided on the middle pillar 8 of the shaft set 1 after the existing outer wall panel 2 is removed. The members 10 and 10, the fixing member 11 that fixes the end portions 3 a and 3 a of the adjacent new outer wall panels 3 and 3, and the base member 12 that fixes the receiving members 10 and 10 and the fixing member 11 are respectively attached. Yes.

  As shown in FIG. 5, the base member 12 includes a pair of side surface pieces 20, 20 that fasten the receiving members 10, 10, an upper surface piece 21 that connects between the upper ends of the side surface pieces 20, 20, and the upper surface piece. And a front piece 22 that hangs down from the front end portion 21 and holds the fixing member 11. The base member 12 has side pieces 20, 20 along the web 8 a and lips 8 c, 8 c of the middle column 8 made of channel steel with a lip, and the front piece 22 is outside the middle column 8. It is arrange | positioned in the groove | channel of the middle pillar 8 so that the flange 8b of this may be followed. The side pieces 20 and 20 are respectively formed with bolt holes 20a, and the front piece 22 is provided with a bolt hole 22a and a pair of upper and lower bolt avoidance holes 22b and 22b arranged so as to sandwich the bolt hole 22a. And are formed.

  As shown in FIGS. 3 and 4, the pair of receiving members 10 and 10 are formed by connecting a fixed piece 30 and a receiving piece 31 in a substantially L shape. And one receiving member 10 is in a state where the fixed piece 30 is overlapped with the web 8a of the middle column 8 and the receiving piece 31 is arranged substantially flush with the outer flange 8b of the middle column 8, The fixing bolt 32 penetrating the fixing piece 30 and the web 8 a is screwed into the bolt hole 20 a of the one side piece 20 of the base member 12 to be fixed to the one side piece 20 of the base member 12. In the other receiving member 10, the fixing piece 30 is superimposed on the lips 8 c, 8 c of the middle column 8, and the receiving piece 31 is arranged substantially flush with the outer flange 8 b of the middle column 8. The fixing piece 30 and the fixing bolt 32 penetrating between the lips 8c, 8c are screwed into the bolt holes 20a of the other side piece 20 of the base member 12 to be fixed to the other side piece 20 of the base member 12.

  As shown in FIGS. 3 and 4, the fixing member 11 includes a base 40 and rotatable pressing pieces 42 and 42 attached to the base 40 with bolts 41 and 41. In the fixing member 11, the fixing bolt 43 penetrating the base 40 and the flange 8 b is used as a bolt of the front piece 22 of the base member 12 in a state where the base 40 is arranged on the surface side of the flange 8 b outside the middle column 8. It is fixed to the front piece 22 of the base member 12 by screwing into the hole 22a. In this case, the front ends of the bolts 41, 41 that fasten the pressing pieces 42, 42 are a pair of upper and lower bolt avoidance holes 45, 45 formed in the outer flange 8 b of the middle column 8 and the front piece 22 of the base member 12. The bolt avoidance holes 22b and 22b are inserted.

  Further, as shown in FIG. 3, before the fixing member 11 is attached, a joint tape 50 as a joint material is applied to the entire surface of the flange 8b of the middle column 8 over the entire surface. Yes.

  In this way, by attaching the pair of receiving members 10 and 10 to the middle column 8 of the shaft set 1 after the existing outer wall panel 2 is removed so as to sandwich the middle column 8, the receiving members 10 and 10 are backrested. As described above, the end portions 3a and 3a of the adjacent new outer wall panels 3 and 3 can be supported. The new outer wall panels 3 and 3 are formed by attaching a rectangular frame-shaped frame body 52 and a heat insulating material 53 to the back surface of the rectangular siding material 51. The frame body 52 is formed so as to have a substantially U-shaped cross section, and is disposed such that an open portion thereof faces outward.

  Therefore, as shown in FIG. 6, the end portions 3 a and 3 a (specifically, the frame bodies 52 and 52) of the adjacent new outer wall panels 3 and 3 are respectively attached to the receiving pieces 31 and 31 of the receiving members 10 and 10. The holding pieces 42, 42 of the fixing member 11 are rotated about 90 degrees as applied, and the frame members 52, 52 of the new outer wall panels 3, 3 are interposed between the receiving pieces 31, 31 of the receiving members 10, 10. By sandwiching the inner pieces 52a, 52a, the end portions 3a, 3a of the adjacent new outer wall panels 3, 3 are firmly fixed, and the new outer wall panels 3, 3 are stably attached to the shaft assembly 1. At this time, the joint gap between the end portions 3a and 3a of the adjacent new outer wall panels 3 and 3 is closed by the joint tape 50, and the waterproof property is secured.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of this invention.

It is a perspective view explaining the outline of the repair method of the outer wall which concerns on one Embodiment of this invention. It is a front view of a shaft set. It is a perspective view of the middle pillar part of a shaft assembly. It is a disassembled perspective view of the middle pillar part of a shaft assembly. It is a perspective view of a base member. It is a cross-sectional view which shows the fixed state of the edge part of an adjacent new outer wall panel.

Explanation of symbols

  1 .... Shaft assembly, 2 .... Existing outer wall panel, 3 .... New outer wall panel, 3a ... End of new outer wall panel, 8 .... Middle pillar, 8a ... Web, 8b ... Flange, 8c ... Lip 10 .. Receiving member, 11 .. Fixing member, 12 .. Base member, 30 .. Fixing piece, 31 .. Receiving piece, 32 .. Fixing bolt, 40 .. Base, 42. ..Fixing bolts, 50..Joint materials

Claims (4)

A pair of wide outer wall panels (2) attached to the shaft assembly (1) is removed, and the shaft assembly (1) has a width dimension that is about half the width dimension of the existing outer wall panel (2). In installing the narrow outer wall panels (3) and (3) side by side, receiving members (10) and (10), a fixing member (11) and a base member (12) are prepared, and the existing outer wall panel (2) is prepared. The base member (12) is disposed in the groove of the reinforcing middle column (8) made of the lip-shaped grooved steel that is disposed substantially at the center in the width direction of the shaft assembly (1) after the shaft is removed. The receiving members (10), (10) and the fixing member (11) are fastened to the base member (12), so that the receiving members (10), (10) and the fixing member (11) are attached to the middle column (8). attached to), the new external wall panels adjacent (3) End of 3) (3a) (3a), said receiving member (10) (repair method of the outer wall, characterized in that fixed by the fixing member so as Ategau 10) (11). The receiving member (10) (10) is formed by connecting a fixed piece (30) and a receiving piece (31) in a substantially L shape, and the fixed piece (30) is connected to the web ( 8a) or the lip (8c) (8c) in a state of being superimposed on the base member (12) by fixing bolts (32), and the receiving piece (31) is placed outside the middle column (8). The method for repairing an outer wall according to claim 1, wherein the outer wall is arranged substantially flush with the flange (8b) . The fixing member (11) includes a base (40) and pressing pieces (42) (42) rotatably attached to the base (40), and the base (40) is attached to the middle pillar. In a state where the outer flange (8b) of (8) is arranged on the surface side, it is fixed to the base member (12) by a fixing bolt (43), and the pressing pieces (42) (42) are fixed to the receiving member ( 10) Adjacent by rotating the end portions (3a) and (3a) of the adjacent outer wall panels (3) and (3) adjacent to the receiving pieces (31) and (31) of (10) so as to be adjacent to each other. The method of repairing an outer wall according to claim 2, wherein the end portions (3a) (3a) of the new outer wall panel (3) (3) are fixed . A joint material (50) for closing the joint gap between the ends (3a) (3a) of the adjacent new outer wall panels (3) (3) is attached to the middle pillar (8) of the shaft assembly (1). The method for repairing an outer wall according to any one of claims 1 to 3 .