JP3975919B2 - Reinforcing wall, reinforcing wall construction method and fixing member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcing wall constructed by stacking concrete blocks inside a column beam frame of an existing building, and a reinforcing wall construction method.
[0002]
[Prior art]
As a conventional construction method for adding a seismic reinforcement wall to an existing building, a method is known in which concrete blocks are stacked inside a column beam frame of an existing building to add a wall (for example, Patent Document 1). See). This wall body is built by building a small precast concrete block while forming a space for reinforcing bars inside the wall, and by integrating the wall bars in the space and placing a grout material after placing the bars. Is done. The wall body is fixed to the column beam frame after inserting a large number of anchors previously placed on the inner peripheral surface of the column beam frame before the building of the blocks into the bar arrangement space. This is done by placing the grout material and embedding it in the wall. In addition, in order to make this fixing more reliable, the anchor may be coupled to the wall bars in the wall body by welding or the like.
[0003]
However, when this anchor is placed, noise and vibration are generated due to the anchor being driven into the column beam frame, so that it is difficult to perform construction on weekdays where tenants of the building are resident. Therefore, recently, a reinforcing wall using a fixing steel material that can fix the wall body to the column beam frame without driving an anchor into the column beam frame has been developed and put into practical use (for example, non-patent document). 1).
[0004]
This seismic reinforcement wall is affixed along the inner periphery of the column beam frame to fix the fixing bars extending inwardly of the column beam frame, and a plurality of concrete inside the fixed beam frame It is mainly composed of a wall body that is formed by building blocks and has a space for reinforcing bars inside. The fixing of the wall body to the column beam frame is performed by placing a grout material in the space in a state where the fixing muscle is inserted into the space and burying the fixing muscle in the grout material. . In this case as well, the fixing muscle may be coupled to the wall muscle in the wall body as described above.
[0005]
And according to such a reinforcement wall, since it is not necessary to drive many anchors to a column beam frame, generation | occurrence | production of a noise etc. can be reduced and a weekday construction can be implemented.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-13291 (page 2-5, FIG. 1)
[0007]
[Non-Patent Document 1]
Kurita Kouhei, 4 others, “Development of an additional shear wall construction method using small precast blocks (Part 2)”, 2002 Summaries of Academic Lectures of Architectural Institute of Japan, C-2, p. 687
[0008]
[Problems to be solved by the invention]
However, in this method, since the fixing strength of the wall body depends on the adhesive strength of the fixing steel material, in order to ensure the same fixing strength as the conventional construction method by the anchor placement, the wall of the wall body It is necessary to secure a large bonding area by using a fixing steel material having the same width as the thickness. For this reason, when the wall thickness is thick, the weight of the fixing steel material increases remarkably, and it is difficult to carry this fixing steel material into the field or to attach it to the column beam frame. It was difficult.
[0009]
In addition, since the fixing steel material has poor adhesion in a state where the adhesion surface is rusted, usually, it is necessary to perform keren (for example, shot blasting treatment) as rust removal on the adhesion surface immediately before being attached, Furthermore, it took a lot of storage while suppressing the generation of rust after keren, which was very difficult to handle.
[0010]
The present invention has been made in view of such conventional problems, and includes a fixing member excellent in handleability, a reinforcing wall fixed to a column beam frame of an existing building using the fixing member, and a method for constructing the reinforcing wall The purpose is to provide.
[0011]
[Means for Solving the Problems]
  In order to achieve this object, the invention shown in claim 1 is a reinforcing wall constructed by stacking concrete blocks inside the column beam frame of an existing building, and is provided on the inner periphery of the column beam frame. A fixing member made of fiber reinforced plastic that is fixed along the fixing beam extending inward of the column beam frame, and a concrete block is formed inside the fixing member. And a wall provided with a space for bar arrangement,The fixing member is a belt-like flat plate arranged in the longitudinal direction on the column or beam, and the belt-like flat plate is integrally provided with a rib projecting inward of the column beam frame along the longitudinal direction. The rib functions as a locking portion that detachably locks the fixing muscle,A grout material is placed in the space in a state where the fixing muscle is inserted into the space, and the wall body is fixed to the column beam frame.
[0012]
  According to the above invention, since the fixing member is made of fiber reinforced plastic, its weight can be greatly reduced. Therefore, the transfer, raising / lowering or supporting is facilitated, and it becomes easy to carry in the field and to attach to the column beam frame.
  Further, since the fiber reinforced plastic does not rust, it is easy to handle because it can omit the rusting as the rust removal of the adhesion surface to the column beam frame.
  The fixing member is integrally provided with a rib. Therefore, since it is highly rigid and hardly deformed, it has good adhesion to the column beam frame, and the fixing strength of the wall body to the column beam frame can be increased.
  Further, the rib can detachably fix the fixing muscle. Therefore, when sticking the fixing member to the inner periphery of the column beam frame, fixing bars that tend to interfere with the sticking work can be removed and attached after the sticking, and the sticking workability is excellent.
[0015]
  Claim2The invention shown in claim1The reinforcing wall according to the present invention is characterized in that the fixing reinforcing bars are coupled to the reinforcing bars.
  According to the said invention, since the said fixing reinforcement is couple | bonded with the reinforcing bar arranged in the wall body, the fixing strength to the column beam frame of the said wall body can further be raised.
[0016]
  Claim3The invention shown in claim1In the reinforcing wall described above, the fixing bars are reinforcing bars arranged vertically and horizontally in the wall.
  According to the above invention, the fixing muscle is a reinforcing bar arranged vertically and horizontally in the wall. That is, the reinforcing bars are directly locked to the fixing member, so that the fixing strength of the wall body to the column beam structure can be further increased.
[0017]
  Claim4The invention shown in FIG. 1 is a method for constructing a reinforcing wall by laminating concrete blocks inward of a column beam frame of an existing building, and is a fiber-reinforced plastic that locks inward fixing bars extending inward of the column beam frame A step of affixing a fixing member made of metal along the inner periphery of the column beam frame, and a wall body in which concrete blocks are stacked inside the fixing member to provide a space for reinforcing bars inside. And a step of fixing the wall body to the column beam frame by placing a grout material in the space with the fixing muscle inserted in the space.The fixing member is a strip-shaped flat plate arranged in the longitudinal direction on the column or beam, and the strip-shaped flat plate is integrally provided with a rib protruding inward of the column-beam frame along the longitudinal direction. The rib functions as a locking portion that detachably locks the fixing muscle.It is characterized by that.
  According to the said invention, there can exist an effect | action similar to invention of Claim 1.
  In the invention shown in claim 5, in constructing a reinforcing wall by laying concrete blocks inside the column beam frame of an existing building, the column beam is pasted along the inner periphery of the column beam frame. A fixing member made of fiber-reinforced plastic that locks the fixing muscle extending inward of the frame,
  It consists of a strip-like flat plate arranged with the longitudinal direction aligned with the column or beam, and the strip-like flat plate is integrally provided along the longitudinal direction with ribs protruding inward of the pillar-beam frame, It functions as a locking portion that locks the fixing muscle in a detachable manner.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
=== First Embodiment ===
The present invention relates to a reinforcing wall constructed by stacking concrete blocks inside a column beam frame of an existing building and a construction method thereof. In the first embodiment, an example in which a seismic reinforcing wall is added is taken as an example. explain.
[0019]
FIG. 1 is a view showing an expanded seismic reinforcing wall, FIG. 1 (a) is a front view showing a partially broken block, and FIG. 1 (b) is a view in FIG. 1 (a). It is sectional drawing of a BB line arrow. 2 to 5 are diagrams for explaining the fixing member. FIG. 2 is an enlarged view of a portion II in FIG. 1B, and FIG. 3 is a view taken along III in FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1A. 5 is a cross-sectional view taken along line VV in FIG. However, in order to avoid making the figure difficult to see, in FIG. 1 (b), the cross-sectional lines and wall lines of the grout material are not shown, and in FIG. 2 to FIG. 5, the grout material is shown through. Yes. Further, in FIG. 2, the block on the cross section is also shown through. In the following description, as shown in FIG. 1, the wall thickness direction of the seismic reinforcing wall is also referred to as the front-rear direction, the wall width direction is also referred to as the left-right lateral direction, and the height direction is also referred to as the up-down direction.
[0020]
As shown in FIG. 1, this seismic reinforcement wall 30 is formed of a large number of concrete in a substantially rectangular space surrounded by a pair of left and right columns 2 and 2 and a pair of upper and lower beams 4 and 4 as a column beam frame. This is a wall body 30 constructed by building blocks 10 together. Both the column 2 and the beam 4 are reinforced concrete (RC), and both ends thereof are integrally connected by a column beam joint structure. Note that the columns 2 and the beams 4 are not limited to RC construction as long as the surface layer portion is concrete, and may be steel concrete construction (SRC construction), for example.
[0021]
The wall body 30 is mainly composed of block walls 32 and 42 formed by stacking small precast concrete blocks 10 (hereinafter referred to as blocks) in the height direction and the lateral direction. As shown in FIG. 1B, the block walls 32 and 42 are provided opposite to each other before and after the wall thickness direction. A space 19 is formed between the pair of block walls 32, 42, and as shown in FIGS. 2 to 4, the space 19 has steel vertical bars 6 and horizontal bars as wall bars. 8 is arranged and the grout material 19a is filled densely, whereby the block walls 32 and 42 are integrated as a wall body 30. Note that the shape of the block 10 and the manner in which it is assembled will be described in the construction procedure described later.
[0022]
The fixing of the wall 30 to the column beam frame is performed by fixing members 52, 52, 54, and 56 bonded to the inner peripheral surfaces 2a and 4a of the column beam frame shown in FIG. That is, fixing members 52, 52, 54, and 56 having the same length as the inner method are respectively attached to the left and right columns 2 and the upper and lower beams 4 with an epoxy resin adhesive while aligning the longitudinal direction thereof. Glued. The bonding positions of the fixing members 52, 52, 54, 56 in the column beam frame are aligned with each other in the wall thickness direction, so that these fixing members 52, 52, 54, 56 are arranged on the four sides of the wall body 30. It is arranged to face each end face. From these fixing members 52, 52, 54, 56, inward fixing bars 58 protrude at the bar arrangement pitch of the wall bars 6, 8, and the fixing bars 58 are grouted in the space 19. By embedding in the material 19a, the wall body 30 is integrated and fixed to the column beam frame.
[0023]
Such fixing members 52, 52, 54, and 56 are flat-shaped plates 52 and 54 that are attached to the left and right columns 2 and the upper beam 4 and flat plates that are attached to the lower beam 6 because of the difference in shape. The member 56 is roughly divided.
FIG. 2 shows the channel member 52 of the column 2, and FIG. 3 shows the channel member 54 of the upper beam 4. In both the members 52 (54), a strip-shaped flat plate 52a (54a) having a plate width substantially the same as the wall thickness of the wall body 30 and a pair of ribs 52b (54b) protruding from both end edges in the plate width direction are integrally formed. It is a member having a substantially U-shaped cross section, and is manufactured by drawing FRP (fiber reinforced plastics) in advance at a factory or the like. The adhesive surface of the groove-shaped member 52 (54) is the surface of the strip-shaped flat plate 52a (54a) where the rib 52b (54b) is not present, and when the adhesive is fixed to the column 2 or the upper beam 4. In addition, the rib 52b (54b) faces the inside of the column beam frame. The rib 52b (54b) serves as a guide for the position of the block 10 when the blocks 10 to be described later are assembled, and the grout material leaks out of the wall body when the grout is placed after the assembly. Acts as a weir to prevent.
[0024]
On the other hand, FIG. 4 shows a flat plate member 56 of the lower beam 4. This flat plate member 56 is a belt-like flat plate 56 having a plate width substantially the same as the wall thickness. The FRP is manufactured by drawing or the like. The reason why such a ribless flat plate member 56 is used for the lower beam 4 is that the block 10 is assembled on the upper surface of the flat plate member 56, so that both ends of the plate member 56 are formed like the belt-like flat plate 52 a of the groove member 52. This is because it is difficult to place the block 10 when the rib 52b is provided at the edge. The flat plate member 56 has a lower rigidity and a lower adhesive strength than the groove-shaped member 52 as long as there is no rib, but this can be dealt with by increasing the plate thickness.
[0025]
As shown in FIGS. 2 to 4, fixing ribs 52c, 54c, and 56c are integrally provided in the longitudinal direction at two portions in the wall thickness direction of the groove members 52 and 54 and the flat plate member 56. It has been. The fixing ribs 52c, 54c, and 56c function as locking portions that lock and fix the fixing bars 58 to the groove-shaped members 52 and 54 or the flat plate member 56, and increase the rigidity of the members 52, 54, and 56. Also functions as a stiffening part. In order to perform the former function of these, as shown in FIG. 5, two pairs of connecting holes 51, 51 for locking the fixing muscle 58 are formed in the ribs 52c, 54c, 56c in the longitudinal direction. A plurality of sets are provided at appropriate intervals. In this embodiment, the appropriate interval is finally welded to the vertical stripes 6 or the horizontal stripes 8 in the wall body 30 in the present embodiment. As shown in FIG. 5, it is set in correspondence with the bar arrangement position of the horizontal bar 8. Further, the fixing members 54 and 56 bonded to the beam 4 are set corresponding to the bar arrangement positions of the vertical bars 6. The arrangement positions of the vertical and horizontal bars 6 and 8 will be described later.
[0026]
As shown in FIGS. 2 to 5, the fixing bar 58 is mainly a reinforcing bar having a predetermined length, and a connecting member 59 for connecting to the fixing ribs 52c, 54c, and 56c is integrally formed at an end thereof. In preparation. That is, the connecting member 59 is a substantially rectangular parallelepiped steel member, and has one end face having a hole 59a for inserting and fixing the end of the reinforcing bar by welding. Further, a groove portion 59b capable of sandwiching the fixing ribs 52c, 54c, and 56c is formed on the other end surface facing the one end surface. The fixing ribs 52c, 54c, 56c and the connecting member 59 are fastened and fixed by the bolt nuts 60a, 60b using the connecting hole 51 in a state where the fixing ribs 52c, 54c, 56c are sandwiched between the grooves 59b. It is supposed to be. In this fastened and fixed state, the fixing muscle 58 is arranged in the space 19 in the wall body 30. As described above, the grout material 19a is placed in the space 19 so that the fixing muscle 58 is embedded in the wall body 30, thereby fixing the wall body 30 to the column beam frame. In the present embodiment, since the fixing bars 58 are welded to the vertical bars 6 or the horizontal bars 8, the fixing strength is further increased.
[0027]
As a kind of FRP which is a material of such fixing members 52, 54, and 56, any material having sufficient strength and rigidity to fix the wall body 30 to the column beam frame may be used. For example, CFRP (carbon fiber) reinforced plastics) can be applied. Also, the kind of adhesive used for the attachment can be applied as long as it has sufficient strength and rigidity to fix the wall body 30 to the column beam frame, and is limited to the above-mentioned epoxy resin adhesive. It is not a thing.
[0028]
In addition, after the completion of the earthquake-resistant reinforcing wall, stress is transmitted between the wall body 30 and the column beam frame through the bonding portion. Therefore, it is preferable that the bonding area is wide, and the belt-like flat plate 52a, The plate widths of 54a and 56 should be greater than the wall thickness. However, if the adhesive strength can be improved by using an adhesive having a strong adhesive force or by making the adhesive surface rough, it is possible to reduce the width of the belt-like flat plates 52a, 54a, 56. .
[0029]
Here, the construction procedure of the seismic reinforcing wall 30 will be described. 6-9 is explanatory drawing for demonstrating a construction procedure, Comprising: Each figure shows a front view in (a), (b) is a BB line arrow view in (a) figure. FIG. However, in FIG. 7B to FIG. 9B, illustration of the wall streaks and the fixing streaks is omitted.
[0030]
---- (1) Attaching the fixing member to the column beam frame ---
First, as shown in FIG. 6, the fixing members 52, 52, 54, and 56 are bonded to the left and right columns 2 and the upper and lower beams 4 constituting the column beam frame with an epoxy resin adhesive. . At this time, since the fixing members 52, 52, 54, and 56 are made of FRP, the fixing members 52, 52, 54, and 56 are very light and can be easily transported, moved up and down, or supported. Further, since FRP does not rust, it is not necessary to perform cleansing as rust removal on the bonded surface before this bonding. Further, if the fixing muscle 58 that tends to interfere with the attaching work is removed from the fixing members 52, 52, 54, and 56 by the connecting member 59, the attaching work of the fixing members 52, 52, 54, and 56 is performed. Can be performed more easily.
[0031]
Next, fixing bars 58 are fastened and fixed to the fixing members 52, 52, 54, and 56 via the connecting members 59, and the fixing bars 58 are arranged inward with respect to the column beam frame. In this embodiment, only the vertical bars 6 (indicated by broken lines in the figure) of the wall bars 6 and 8 are arranged here. These vertical bars 6 are passed up and down while being arranged at positions that can be stored in a central space 18 or a common space 20 formed in the wall body 30 described later, and the upper and lower ends thereof are respectively connected to the upper beam 4 and It is welded to the fixing bar 58 of the lower beam 4. The bar arrangement timing of the vertical bars 6 is not limited to this, and may be performed in parallel with the masonry work of the blocks 10 described later, for example. However, in the present embodiment, since the vertical bars 6 are arranged between the pair of block walls 32 and 42, even if the vertical bars 6 are arranged before the blocks 10 are assembled, Since the workability does not deteriorate at all, it is performed at the timing before the assembly.
[0032]
--- (2) Formation of a pair of block walls ---
Next, the blocks 10 are assembled inside the fixing members 52, 52, 54, and 56. Finally, as shown in FIG. 9, a pair of block walls 32 and 42 are provided in the front and rear in the wall thickness direction. Form. In the following, the block wall 32 positioned in front of the pair of block walls 32 and 42 is referred to as a front block wall, and the block wall 42 positioned rearward is referred to as a rear block wall.
[0033]
10 to 12 show blocks provided on the block wall. 10 is a bottom view, FIG. 11 is a rear view, and FIG. 12 is a side view. FIG. 13 is a perspective view showing a part of the formed block wall.
[0034]
The block 10 includes a block main body 12 and a pair of protrusions 14 protruding from the back surface of the block main body 12. The block body 12 is a substantially rectangular plate-like body having a flat surface 12a. When the blocks 10 are stacked to form a block wall as shown in FIG. 13, the flat surface 12a is a vertical wall surface. Form.
[0035]
As shown in FIG. 10, a pair of the protrusions 14 is provided at intervals in the left-right direction, and a central space 18 is formed between them. Further, the protrusion 14 is disposed on the inner side of the left and right end portions 12b of the block main body 12. When the blocks 10 are arranged side by side in the horizontal direction as shown in FIG. 13, one of the adjacent blocks 10 is arranged. A shared space 20 is formed between the protrusion 14 and the projection 14. The central space 18 and the common space 20 communicate with each other in the vertical direction in the formation state of the block walls 32 and 42 shown in FIG. 13, and thus the above-described vertical stripes 6 are stored in the respective spaces 18 and 20. It is supposed to be. As shown in FIG. 12, a recess 16 is formed on the lower surface of the protrusion 14, and the central space 18 and the common space 20 communicate with each other in the left-right direction. The horizontal stripes 8 described above are accommodated in this left and right space.
[0036]
Formation of the front and rear block walls 32 and 42 using such a block 10 is performed in the following procedure.
First, as shown in FIG. 7, the lowest row (first row) block row 32a of the front block wall 32 is arranged. That is, as shown in FIG. 4, the flat surface 12 a of the block body 12 is aligned with the front edge 56 a of the flat plate member 56 of the lower beam 4, and the block 10 is moved in the lateral direction from the left to the right column 2. It arranges sequentially over to. At this time, as shown in FIG. 2, the end portions 12 b of the blocks 10 adjacent to the left and right are bonded together, and the lower surface of the block 10 is bonded to the upper surface of the flat plate member 56. These adhesions are made with an epoxy resin adhesive.
[0037]
However, since the block 10 is a standard product formed with a predetermined standard dimension, the total length of the block row 32a may not match the opening width of the column beam frame. That is, as shown in FIG. 7, there may be a gap S <b> 1 in which the block 10 does not exist in a part in the lateral direction of the wall body 30 due to the mismatch of the allocation of the horizontal width and the opening width of the block 10. This gap S1 is filled only with the grout material by the formwork described later, but if this portion is located at the end in the lateral direction, the fixing strength of the wall body 30 and the column beam frame may be lowered. Therefore, in this embodiment, the blocks 10 in the left half of the block row 32a in the horizontal direction are arranged left justified, and conversely, the blocks 10 in the right half are arranged right justified. Thus, the gap S1 is formed substantially at the center in the lateral direction.
[0038]
That is, as shown in FIG. 2, the leftmost block 10 of the block row 32a has its left end 12b abutted against the tip of the rib 52b of the groove-shaped member 52 of the left pillar 2, and hereinafter, FIG. As shown in the figure, the blocks 10 are sequentially arranged up to the substantially center adjacent to the right side of the block 10. On the other hand, the rightmost block 10 of the block row 32a is arranged with its right end portion 12b abutted against the tip of the rib 52b of the groove-shaped member 52 of the right column 2, and thereafter adjacent to the left side of the block 10 and The blocks 10 are sequentially arranged up to substantially the center. It should be noted that the number of blocks allocated to the left and right is not limited to the same number on the left and right as long as the gap S1 is formed substantially at the center in the horizontal direction. For example, in the illustrated example, since the block row 32a is formed of 11 blocks 10, it is divided into 6 blocks 10 on the left and 5 blocks 10 on the right, so that the gap S1 is in the middle. It is located on the right side.
[0039]
Next, as shown in FIG. 2, the first block row 42a of the rear block wall 42 is formed to face the front block row 32a. At that time, as shown in the cross-sectional view of FIG. 4, the blocks 10 are sequentially arranged in the left and right lateral directions while the flat surface 12 a of the block body 12 is aligned with the rear edge 56 b of the flat plate member 56. Adhesion between the end portions 12b of the blocks 10 adjacent to the left and right and adhesion of the lower surface of the block 10 onto the flat plate member 56 are performed in the same manner as in the case of the front block row 32a described above. The gap S1 due to the mismatch between the total length of the block row 42a and the opening width of the column beam frame is also formed at substantially the center as in the case of the front block row 32a.
[0040]
In the above description, for the purpose of securing the fixing strength between the wall body 30 and the column beam frame, the gap S1 is formed at substantially the center in the lateral direction. However, as long as sufficient fixing strength can be secured by grout filling. The gap S1 may be formed at both left and right ends of the block rows 32a and 42a.
[0041]
After the arrangement of the first block rows 32a and 42a in this way, the second block rows 32a and 42a are stacked on top of this, but before that, FIG. 2, FIG. 4 and FIG. As shown in a), the horizontal bars 8 (indicated by broken lines in FIG. 7A) for the second row of block rows 32a and 42a are arranged. As described above, the horizontal streak 8 is passed through the recess 16 on the lower surface of the protrusion 14 of the second-stage block 10 (see FIG. 4), and as a result, as shown in FIG. 8 is arranged across the left and right, and its left and right end portions are welded to the fixing bars 58 of the left and right columns 2 to arrange the bars.
[0042]
After this bar arrangement, as shown in FIG. 8, the second block rows 32a and 42a are stacked. In this case, the end portions 12b of the blocks 10 adjacent to the left and right are bonded to each other in the same manner as described above. The lower surface of the block 10 is bonded to the upper surface of the first block 10 which is the lower stage. The lateral position of the gap S1 is aligned with the first row of block rows 32a and 42a. Then, the horizontal bars 8 for the third block row are arranged in the same manner as in the first stage.
[0043]
Such stacking is sequentially repeated, and when the block rows 32a and 42a reach the vicinity of the fixing member 54 of the upper beam 4 as shown in FIG. 9, the formation of the front and rear block walls 32 and 42 is completed. It becomes.
[0044]
---- (3) Grouting placement ----
Finally, a grout material such as a non-shrink mortar is placed in the space 19 between the front and rear block walls 32 and 42 shown in FIG. 9B. The placement of the grout material is performed using a gap S2 formed between the uppermost block row 32a, 42a and the fixing member 54 immediately above the row. That is, since the block 10 is a standard product as described above, the building height of the block 10 often does not match the opening height of the column beam frame of the existing building. A similar gap S2 is generated. This gap S2 is formed between the uppermost block row 32a, 42a and the fixing member 54 of the upper beam 4, so that the grout material can be filled into the space 19 from this gap S2, and thereby the front side Then, the block walls 32 and 42 on the rear side are integrated to complete the construction of the wall body 30.
[0045]
The gaps S1 and S2 are filled by formwork. That is, before placing the grout material, leaving a portion of the grout material input port, the fixing member 54 in the vicinity of the gap S2 and the uppermost block rows 32a and 42a are set up to block the gap S2. To do. Further, the gap S1 is blocked by striking a dam plate between the blocks 10 on both sides of the substantially central gap S1. Then, by placing a grout material in the space 19, the gaps S1 and S2 are also filled.
[0046]
=== Second Embodiment ===
FIG. 14 is a diagram showing a seismic reinforcing wall according to the second embodiment, in which FIG. 14 (a) is a front view showing a part of the block and FIG. 14 (b) is FIG. It is sectional drawing of the BB arrow in (a). In addition, in FIG.14 (b), illustration of the cross-sectional line and wall line of the grout material part is abbreviate | omitted. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and the description of the same components is omitted.
[0047]
In the first embodiment described above, the reinforcement wall 30 for earthquake resistance is added to the column beam frame to reinforce it. However, in the second embodiment, the existing wall 5 provided in the column beam frame is increased in thickness. It is something to reinforce. That is, in the second embodiment, the existing wall 5 exists in advance in the column beam frame instead of the rear block wall 42 according to the first embodiment. Then, a single block wall 32 is formed so as to face the existing wall 5, and the grout material 19 a is placed in the space 19 between the block wall 32 and the existing wall 5 to An integrated wall body 31 is constructed. The shape of the fixing member is different from that of the first embodiment due to the single block wall 32, and the difference will be mainly described below. Further, the fixing member 55 of the upper beam 4 has substantially the same configuration as the fixing member 53 of the column 2, and thus the description thereof is omitted.
[0048]
15 shows an XV portion in FIG. 14B, and FIG. 16 shows a cross-sectional view taken along line XVI-XVI in FIG. In FIGS. 15 and 16, the grout material and the block on the cross section are shown in a transparent manner.
As shown in FIG. 16, the fixing member 57 of the lower beam 4 is substantially the same flat plate member as in the first embodiment, and the rear edge 57 b is arranged along the wall surface 5 a of the existing wall 5. However, the fixing rib 57c for attaching the fixing bar 58 provided for each block wall is formed only at one place in the wall thickness direction because there is one block wall.
[0049]
On the other hand, as shown in FIG. 15, the fixing members 53 and 55 of the column 2 and the upper beam 4 are angle-shaped members having a substantially L-shaped cross section in which the rib 52c on the rear edge side of the groove-shaped member 52 of the first embodiment is omitted. 53 is used. The reason for this is that the existing wall 5 exists instead of the block wall on the rear side, so there is no leakage of the grout material to the rear side when the grout material is placed, and no rib as a weir is necessary. It is. Such angle-shaped member 53 is arranged with a rib-free rear edge 53e along the wall surface 5a of the existing wall 5, and the rib 53b of the front edge 53d is formed inward of the column beam frame so as to function as the weir. Facing. The end 12b of the block 10 located at the end in the wall width direction is abutted against the tip of the rib 53b of the front edge 53d. Similarly to the flat plate member 57 described above, the fixing rib 53c is formed only at one location in the wall thickness direction of the angle member 53.
[0050]
=== Third Embodiment ===
FIG. 17 is a cross-sectional view showing the seismic reinforcing wall according to the third embodiment as viewed in the same direction as FIG. In the figure, the grout material is shown through. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and the description of the same components is omitted.
[0051]
The block 11 according to the third embodiment includes a pair of block main bodies 12 and 12 and a drum-shaped web portion 13 with a central portion in the wall thickness direction for connecting the block main bodies 12 and 12 together. Composed. The flat surfaces 12a and 12a of the pair of block bodies 12 and 12 are arranged to face each other in parallel, so that the flat surfaces 12a constitute both wall surfaces of the wall body 30, respectively. Further, with respect to the bar arrangement space to be formed inside the wall 33, since the web portion 13 is formed in a drum shape, when the block 11 is assembled vertically and horizontally, it is vertically A space is formed between the web portions 13 adjacent to each other on the left and right, and this space is used as a bar arrangement space. It is to be noted that the fixing muscle 58 is inserted into this space and the grout material is placed in the same manner as in the first embodiment.
[0052]
Further, the fixing members 52, 54, and 56 of the pillar 2 and the beam 4 are the same as those in the first embodiment. The block 11 is assembled on the flat member 56 with the pair of flat surfaces 12 a and 12 a aligned with the front and rear edges 56 a and 56 b of the flat plate member 56 of the lower beam 4. Further, each block 11 positioned at the left end and the right end in the horizontal direction is arranged such that the end portions 12b, 12b of the pair of front and rear block bodies 12, 12 are abutted against the tips of the ribs 52b of the channel member 52 of the column 2. ing.
[0053]
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The deformation | transformation as shown below is possible.
[0054]
(A) In the present embodiment, the fixing ribs 52c, 54c, and 56c of the fixing members 52, 54, and 56 are connected to the vertical stripe 6 or the horizontal stripe 8 via the fixing stripe 58, but the present invention is not limited to this. For example, the vertical stripe 6 or the horizontal stripe 8 may be directly coupled to the fixing ribs 52c, 54c, and 56c of the fixing members 52, 54, and 56 without using the fixing stripe 58. That is, the connecting members 59 are integrally provided at both ends of the vertical bars 6 or the horizontal bars 8, and the connecting members 59 are fastened and fixed to the fixing ribs 52c, 54c, and 56c by bolt nuts 60a and 60b. Also good.
According to this configuration, the fixing strength of the wall body 30 to the column beam frame can be further increased.
[0055]
(B) In this embodiment, all the fixing members 52, 54, and 56 attached to the column beam frame are made of FRP. However, all the fixing members 52, 54, and 56 are not necessarily made of FRP. Absent. For example, for the fixing member 56 of the lower beam 4 that does not need to be lifted to a high place, flat steel that is a steel fixing member may be used.
[0056]
(C) In the present embodiment, as an example of a locking portion that detachably locks the fixing bar 58 to the fixing ribs 52c, 54c, and 56c, the fixing ribs 52c, 54c, and 56c are formed by the groove portion 59b of the connecting member 59. However, the present invention is not limited to this, and any structure that can be detachably locked may be used.
[0057]
(D) In the present embodiment, one fixing member 52, 52, 54, 56 having the same length as the inner method of the pillar 2 and beam 4 is provided one by one. 54 and 56 need only be provided along the inner periphery of the column beam frame, and the fixing members 52, 52, 54, and 56 may be provided separately.
[0058]
【The invention's effect】
As described above, according to the present invention, a fixing member having excellent handling properties is provided, and a reinforcing wall fixed to a column beam frame of an existing building using the fixing member and a method for constructing the reinforcing wall are provided. Can do.
[Brief description of the drawings]
FIG. 1 is a diagram showing a seismic reinforcing wall according to a first embodiment of the present invention, in which FIG. 1 (a) is a front view showing a part of the block, and FIG. FIG. 2 is a cross-sectional view taken along line B-B in FIG.
FIG. 2 is an enlarged view showing a portion II in FIG.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a cross-sectional view taken along line VV in FIG. 2;
FIG. 6 is an explanatory diagram for explaining a construction procedure of the earthquake-resistant reinforcing wall according to the first embodiment.
FIG. 7 is an explanatory diagram for explaining a construction procedure of the earthquake-resistant reinforcing wall according to the first embodiment.
FIG. 8 is an explanatory diagram for explaining a construction procedure of the earthquake-resistant reinforcing wall according to the first embodiment.
FIG. 9 is an explanatory diagram for explaining a construction procedure of the earthquake-resistant reinforcing wall according to the first embodiment.
FIG. 10 is a bottom view of a block provided for the earthquake-resistant reinforcing wall according to the first embodiment.
FIG. 11 is a rear view of FIG.
12 is a side view of FIG.
FIG. 13 is a perspective view showing a part of a block wall.
14A and 14B are views showing a seismic reinforcing wall according to a second embodiment of the present invention, in which FIG. 14A is a front view showing a part of the block, and FIG. It is sectional drawing of the BB line arrow in FIG.14 (a).
FIG. 15 is an enlarged view showing an XV portion in FIG. 14 (b).
16 is a cross-sectional view taken along arrow XVI-XVI in FIG.
FIG. 17 is a cross-sectional view showing the seismic reinforcing wall according to the third embodiment of the present invention as seen in the same direction as FIG.
[Explanation of symbols]
2 pillars
4 Beam
10 Precast concrete block (block)
19 space
19a Grout
30 walls
32 Front block wall
42 Rear block wall
52, 54 Fixing member (channel-shaped member)
56 Fixing member (flat plate member)
58 Anchorage Muscle

Claims (5)

Reinforcement wall constructed by building concrete blocks inside the pillar beam frame of an existing building,
A fixing member made of fiber reinforced plastic that is attached along the inner periphery of the column beam frame and that anchors a fixing bar extending inward of the column beam frame, and a concrete block is assembled inside the fixing member. A wall body that is formed by stacking and has a space for reinforcing bars inside,
The fixing member is a belt-like flat plate arranged in the longitudinal direction on the column or beam, and the belt-like flat plate is integrally provided with a rib projecting inward of the column beam frame along the longitudinal direction. The rib functions as a locking portion that detachably locks the fixing muscle,
A reinforcing wall characterized in that a grout material is placed in the space in a state where the fixing reinforcement is inserted into the space to fix the wall body to the column beam frame. In reinforcing the wall of claim 1 Symbol placement, the in fixing muscle reinforcing wall, wherein the reinforcing bars for the reinforcement are coupled. In reinforcing the wall of claim 1 Symbol mounting, the fixing muscle reinforcing wall which is a reinforcing bar for the reinforcement arranged vertically and horizontally on the wall body. A method of constructing a reinforcing wall by building concrete blocks inside the column beam frame of an existing building,
Affixing a fixing member made of fiber reinforced plastic that locks the fixing bars extending inward of the column beam frame along the inner periphery of the column beam frame; and
A step of assembling concrete blocks inward of these fixing members to form a wall having a space for reinforcing bars inside;
And a step of fixing the wall of grout in the space in a state where the insertion of the fixing muscle into the space by pouring into the column beam Frames,
The fixing member is a belt-like flat plate arranged in the longitudinal direction on the column or beam, and the belt-like flat plate is integrally provided with a rib projecting inward of the column beam frame along the longitudinal direction. the ribs, method for constructing a reinforcing wall, characterized that you function as a locking portion for detachably locking the fixing muscle. When constructing a reinforcing wall by building concrete blocks inside the column beam frame of an existing building, anchoring bars are attached along the inner periphery of the column beam frame and extend inward of the column beam frame. A fixing member made of fiber reinforced plastic for locking
It consists of a strip-shaped flat plate arranged in the longitudinal direction on the column or beam, and the strip-shaped flat plate is integrally provided with a rib projecting inward of the column beam frame along the longitudinal direction. A fixing member that functions as a locking portion that detachably locks a fixing muscle.

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