JP2006328634A - Wall reinforcing structure of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dispense with welding work on a job site, and to integrally join a plurality of steel plates together even if both front and back sides are discontinuous as in the case of a wall. <P>SOLUTION: The plurality of steel plates 4 and 5 continue into one another by having ends of them overlap one another; the plurality of steel plates continuing into one another are positioned along both the front and back sides of the wall 2 of the building in the state of keeping an interval between the wall and the steel plates; strip-shaped continuous sheets 6 and 7 are stuck on the outside of the steel plates, respectively; required places of the strip-shaped continuous sheets are fixed to the wall 2 or a column 1 which continues into the wall, so that the plurality of steel plates can be integrally joined together; and a filler 11 is injected into the interval between the steel plate and the wall. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure for reinforcing a wall of a building suitable for, for example, retrofitting an existing building wall.

For example, what is described in patent document 1 is conventionally known about reinforced concrete pillars, such as a building. Since this conventional reinforcing structure relates to a column, a steel plate or a strip-like continuous sheet along the column is fixed so as to be wound around the column. However, when trying to reinforce a wall of an existing building, it is almost impossible to wrap a steel plate or a belt-like continuous sheet around the wall. Therefore, conventionally, a plurality of steel plates are placed along the wall of the building, and each of the plurality of steel plates is welded and joined at the construction site.
Japanese Patent Laid-Open No. 2005-23745

  The conventional reinforcement structure requires welding work at the construction site to reinforce the walls of the building, so sparks generated during welding work may ignite nearby combustible materials and cause a fire. was there. For this reason, strict attention is required for the spark, and there is a problem that it takes time and labor for curing the surrounding combustible material.

  In addition, if the technology for welding steel plates is inferior, cracks may be generated from the welded portions, or the steel plates may be deformed by the heat generated by welding, so that the extra reinforcement may not be meaningful. However, since the reliability of welding largely depends on the skill of the welder, a uniform welding finish cannot always be expected. Therefore, if a high-quality weld finish is always sought, a skilled welder must be secured, and there is a problem that a large amount of money is inevitably required.

  Furthermore, when the above-described belt-like continuous sheet is made of resin-based fibers, such as aramid fibers, it is considered that the fire during welding can be transferred to the fibers, so that there is a problem that the welding operation itself cannot be performed. .

  The objective of this invention is providing the wall reinforcement structure of the building which can integrate, without welding a steel plate.

  In the first invention, a plurality of steel plates are made continuous by overlapping their end portions, and the plurality of continuous steel plates are arranged at least on both the front and back sides of the wall of the building, and are strip-shaped outside the steel plates. While the continuous sheet is pasted and the plurality of steel plates are integrally joined, it is characterized in that a filler is filled between the steel plate and the wall.

  In addition, although a certain amount of strength is required for the strip-shaped continuous sheet, for example, an aramid fiber, the material is not limited as long as the strength is ensured. In addition, the continuous belt-like sheet may be attached to the entire surface of the steel plate, or may be attached at a predetermined interval in the vertical direction of the steel plate.

  Moreover, the said filler needs the fluidity | liquidity which can be inject | poured between a wall and a steel plate. This is because the concrete wall surface has many fine irregularities, but it is necessary to maintain the strength of this reinforcing structure that the filler reaches the entire wall surface including these irregularities. For the garden, fluidity is required for the filler.

  Further, the filler is required to have a function of bonding a steel plate to a wall or a column. This is because the steel plate must exhibit a so-called restraining effect that suppresses the expansion of the apparent volume of cracks in the walls and pillars, but the filler does not have sufficient adhesive strength. This is because the steel plate and the wall or the column move relative to each other and the restraining effect is not sufficiently exhibited. In addition, this filler has to exert a restraining effect as described above when cracks enter the walls and pillars and the apparent volume tends to expand. Therefore, a property that does not occur, that is, compression rigidity is required.

  Therefore, the filler according to the present invention has both adhesiveness and compression rigidity, and must be fluid. However, any material can be used as long as it has adhesiveness, compression rigidity, and fluidity. A thing may be used.

  In the second invention, a plurality of steel plates with overlapping end portions are placed on both the front and back sides of the wall of the building and the front and back sides of a column continuous with the wall, and a belt-like continuous sheet is bonded to these steel plates. Characterized by points. A wall having a wall and a column continuous with the wall as described above is referred to as a walled column structure. The second invention is intended to reinforce the column structure with a wall, that is, both the column and the wall. It becomes. This point is different from the first invention. That is, the first invention includes at least all of the configurations in which a strip-like continuous sheet is pasted on a steel plate along the wall, but the second invention has a steel plate on both the wall and the column. It is limited to the structure where the strip | belt-shaped continuous sheet is affixed along these steel plates.

  The third invention is characterized in that the filler is any one of a mortar, a grout material, and a resin adhesive. The mortar and grout material have all of adhesiveness, compressive rigidity and fluidity. Resin-based adhesives are limited to those that maintain compression rigidity and fluidity.

  The fourth invention is characterized in that an interval is provided between the steel plate and the wall or between the steel plate and the wall and the column, and a filler is filled in the interval.

  A fifth aspect of the present invention is a belt-like continuous sheet which is a stop member which is outside the belt-like continuous sheet and has a pressing plate extending in a direction substantially perpendicular to the direction in which the belt-like continuous sheet is pasted. The steel plate is characterized in that the steel plate is fixed to the wall or a column continuous to the wall. The pressing plate may be made of wood, metal, or synthetic resin. The stopper member may be a bolt penetrating the wall, or may be directly driven into a wall or a column continuous with the wall, such as an anchor bolt or a nail.

  6th invention has the characteristics in the point which put the said press board along the corner | angular part formed in the connection part of a wall and a pillar. The pressing plate may be fixed to the wall side or the column side as long as it is along the corner.

  According to 1st invention, a some steel plate can be integrally joined using a strip | belt-shaped continuous sheet. In this way, since the steel plates along both surfaces of the wall can be integrally joined with the belt-like continuous sheet, welding work for joining these steel plates becomes unnecessary. Therefore, there is no problem such as a fire due to sparks generated during welding work, and it is possible to save troubles such as curing work for the sparks. Moreover, it is only necessary to superimpose the ends of a plurality of steel plates and paste a continuous belt-like sheet on it, so that it does not depend on the skills of skilled workers such as a skilled welder as in the past, and the result is always uniform. Can be obtained. Thus, since a skilled engineer is not required, the cost can be reduced accordingly.

  Moreover, sufficient reinforcing strength can be obtained by placing steel plates along both sides of the wall, sandwiching the walls with the steel plates as if they were sandwiched, and integrally joining the steel plates with a continuous belt-like sheet. In particular, according to the second invention, the plurality of steel plates with the end portions overlapped are arranged on both the front and back sides of the wall of the building and the front and back sides of the column continuous to the wall, and the strip-like continuous sheet is provided on these steel plates. As a result, the reinforcing strength of the column can be improved, and the reinforcing strength of the wall can be greatly improved in combination with the supporting force of the column.

  According to the third invention, in the case of a mortar or grout material, all of adhesiveness, compressive rigidity and fluidity are provided, so that it is optimal for reinforcement of walls and columns in combination with steel plates. Further, in the case of a resin-based adhesive, its adhesiveness is excellent, so that it is effective for integrating the steel plate and the wall or column.

  According to the fourth invention, since the space is provided between the steel plate and the wall or between the steel plate and the wall and the column, and the filler is filled in this interval, the thickness of the filler can be sufficiently secured. Therefore, when mortar or grout material is used as the filler, the characteristics of these fillers can be sufficiently exhibited.

  According to the fourth invention, since the space is provided between the steel plate and the wall or between the steel plate and the wall and the column, and the filler is filled in this interval, the thickness of the filler can be sufficiently secured. Therefore, when mortar or grout material is used as the filler, the characteristics of these fillers can be sufficiently exhibited.

  In a fifth aspect of the invention, there is provided a stop member that is provided along the pressing plate in a direction substantially perpendicular to the direction in which the belt-like continuous sheet is attached, and is continuous with the wall or the wall. Since it is fixed to the column, a plurality of steel plates can be firmly integrated. Particularly, in the sixth invention, since the pressing plate is placed along the corner portion formed at the joint portion between the wall and the pillar, the tension of the belt-like continuous sheet can be maintained, and the steel plate can be integrated accordingly. Greater effects are also demonstrated for secure bonding.

  The first embodiment shown in FIGS. 1 to 3 relates to a wall reinforcing structure of a building in which walls 1 and 2 are connected to a pillar 1, and the surfaces 2a and 3a of the walls 2 and 3 and the back surfaces 2b and 3b. In addition, a plurality of steel plates 4 and 5 are arranged separately, and the specific configuration thereof is as follows.

  The steel plates 4a covering the wall surfaces 2a and 3a are formed of flat plates, and these steel plates 4a are continuous in the wall direction with their ends overlapped with the ends of the adjacent steel plates 4a. However, in the steel sheet 4a extending to the pillar 1, a portion corresponding to the corner 1a of the pillar 1 is provided with a bent portion X corresponding to the corner 1a, and this bent portion X is opposed to the corner 1a. I am letting. Further, the steel plate 4b covering the column 1 is provided with bent portions Y1 and Y2 at portions corresponding to the respective corners 1a of the column 1, and the ends of the steel plates 4b adjacent to each other are overlapped so as to cover the column 1 I have to.

  On the other hand, the steel plates 5a covering the back surfaces 2b and 3b of the walls 2 and 3 are formed of flat plates, and the ends of these steel plates 5a are overlapped with the ends of the adjacent steel plates 5a so as to be continuous in the wall direction. The steel plate 5b covering the column 1 is provided with bent portions Y1, Y2, Y3 at portions corresponding to the respective corners 1a of the column 1, and the ends of the steel plates 5b adjacent to each other are overlapped to form the column 1 I try to cover it.

  Each of the steel plates 4 and 5 as described above is overlapped with the adjacent steel plates 4 and 5 so as to be continuous in the wall direction, and at a predetermined interval L with respect to the walls 2 and 3. Yes. In order to maintain this distance L, a spacer (not shown) is interposed between the walls 2 and 3 and the steel plates 4 and 5.

  As described above, the strip-like continuous sheets 6 and 7 are pasted in the continuous direction of the steel plates 4 and 5 on the steel plates 4 and 5 that are continuous in the wall direction while maintaining a distance L from the column 1 or the wall 2 through the spacer. However, in the first embodiment, as shown in FIG. 2, the belt-like continuous sheets 6 and 7 are stuck all over the steel plates 4 and 5. However, the steel plates 4 and 5 may be attached with a predetermined interval in the vertical direction. In short, the strip-like continuous sheets 6 and 7 are integrated with a plurality of steel plates 4 and 5 whose end portions are overlapped. As long as the bonding strength is maintained, and the bonding strength of the belt-like continuous sheets 6 and 7 is not limited.

  Further, the belt-like continuous sheets 6 and 7 are required to have a certain degree of strength such as aramid fibers, but any material may be used as long as the strength is ensured. However, in the case of an aramid fiber, since it has non-conductivity, the effect which prevents generation | occurrence | production of the rust by electric corrosion can be anticipated. In particular, if this aramid fiber is affixed to the entire steel sheet, a large rust prevention effect can be expected.

  As is apparent from FIG. 2, outside the belt-like continuous sheets 6 and 7 formed as described above, a bent portion corresponding to the corner 1a is in a direction substantially perpendicular to the direction in which the belt-like continuous sheet is attached. A metal pressing plate 8 is placed along each of X and Y2. And this presser plate 8 is penetrated with a bolt 9 which is a stop member of the present invention. As is apparent from FIG. 1, the bolt 9 is formed by strip-like continuous sheets 6, 7, steel plates 4, 5 and walls. 2 and 3 are penetrated. The nut 10 is attached to the end of the bolt 9 penetrating in this way, and the nut 10 is tightened to firmly fix the belt-like continuous sheets 6 and 7 to the walls 2 and 3 adjacent to the pillar 1 together with the pressing plate 8. The belt-like continuous sheets 6 and 7 are fixed to the walls 2 and 3 adjacent to the pillar 1 as described above, whereby each of the plurality of steel plates 4 and 5 is integrally joined.

  Further, as described above, the pressing plate 8 is provided along the bent portions X and Y2 corresponding to the corners 1a serving as the so-called corners. The initial shape of the continuous sheets 6 and 7 can be maintained and the strength thereof can be maintained. If the strip-like continuous sheets 6 and 7 are lifted from the steel plate at the locations corresponding to the above-mentioned corners, there arises a problem that the reinforcing effect of the portions cannot be sufficiently exhibited. However, by providing the pressing plate 8 along the bent portions X and Y2 corresponding to the corners 1a serving as the corners as described above, the belt-like continuous sheets 6 and 7 are formed at the corners 1a serving as the corners. It will not float up.

  When the steel plates 4 and 5 are opposed to the pillars 1 and the walls 2 and 3 as described above, the grout material 11 as the filler of the present invention is injected into the gap L. 5, since these steel plates 4, 5 are integrally joined with the belt-like continuous sheets 6, 7 and the pressing plate 8, these steel plates 4, 5 are of course not scattered. Since the steel plates 4 and 5 are integrated with the column 1 and the walls 2 and 3 through the grout material 11 as a filler, an almost perfect reinforcing effect can be obtained.

  According to the first embodiment described above, the front surfaces 2a and 3a can be integrally joined to each steel plate 4 facing the surface only, and the back surfaces 2b and 3b are integrated to each steel plate 5 facing the surface only by the back surface. Can be joined together. That is, although the front surfaces 2a and 3b and the back surfaces 2b and 3b are not continuous, the steel plates 4 and 5 facing each other are integrally joined. In particular, in the first embodiment, the belt-like continuous sheets 6 and 7 are substantially fixed to the walls 2 and 3 with the bolts 9 penetrating the walls 2 and 3. The reinforcing function is fully exhibited, and the steel plates 4 and 5 can also be integrated. Thus, since each of the steel plates 4 and 5 was integrated with the strip | belt-shaped continuous sheets 6 and 7, these steel plates and strip | belt-shaped continuous sheet | seat can combine and can exhibit sufficient restraint effect.

  When the grout material 11 is injected and the reinforcement is completed as described above, a cosmetic coating is applied from above the belt-like continuous sheets 6 and 7 using a mortar or the like, and the reinforcement work is completed. Note that the grout material 11 is not necessarily used as the filler. For example, mortar may be used. However, the grout material is optimal when the injection pressure for injecting them cannot be secured sufficiently.

  The second embodiment shown in FIG. 4 is a so-called wall-type pillar 1 type building, in which a nail 12 as a stop member is driven into the pillar 1 portion, and the steel plates 4 and 5 and the strip-like continuous sheets 6 and 7 are driven. Further, the end portion of the pressing plate 8 is fixed to the column 1. In addition, in this 2nd Embodiment, although the corner | angular part 1a used as what is called a corner is formed in the joint of the pillar 1 and the wall 2, the steel plate corresponding to this corner | angular part 1a which is this corner. The end portion 4 forms a bent portion Y4 corresponding to the corner portion 1a, and a nail 12 is driven into an end portion outside the bent portion Y4. Other configurations are the same as in the first embodiment, and an interval L is formed between the steel plates 4 and 5 and the wall 2 with a spacer (not shown) interposed therebetween. A grout material 11 is injected.

  Also in the second embodiment as described above, the steel plates 4 and 5 can be integrally joined with the belt-like continuous sheets 6 and 7 on both the front and back surfaces 2a and 2b of the wall, and the column 1 and the wall 2 Since they are integrated, the reinforcing strength of the wall 2 is increased.

  In the third embodiment shown in FIG. 5, the driving member 13 is fixed to the corner portion 1 a which is the entering corner portion formed at the joint between the column 1 and the wall 2, and is opposed to the surface 2 a of the wall 2. The end of the steel plate 4 ensures a shape that is parallel to the surface of the driving member 13, and the portion facing the column 1 outside the driving member 13 is parallel to the surface of the column 1.

  In the third embodiment as described above, if the driving member 13 is made of a material that is easy to drive a nail, such as wood or resin, the operation of driving the nail 12 is simplified, and a plurality of steel plates 4 are integrated. Can be joined together. The configuration other than the above is the same as in the first and second embodiments.

  Moreover, although the said 2nd and 3rd embodiment made the example the case where a wall exists only in the one side of a pillar, even when there are walls in the both sides of a pillar similarly to 1st Embodiment, these 2nd Of course, the third embodiment can be applied.

  The fourth embodiment shown in FIG. 6 relates to a reinforcing structure for a portion called a waist wall or a leaning wall in which a hole 16 for forming a window or the like is formed in the wall 2. Also in this case, reinforcement is possible as in the first to third embodiments.

  In the fifth embodiment shown in FIG. 7, a plurality of steel plates 4, 5 are opposed to the front and back surfaces 2 a, 2 b of the wall 2 located between the pair of pillars 1, and The point which stuck the strip | belt-shaped continuous sheets 6 and 7 is the same as the 1st-3rd embodiment. However, the greatest feature of the fifth embodiment is that the steel plates 4 and 5 and the strip-like continuous sheets 6 and 7 are not fixed to the column 1 but only to the wall 2.

  That is, in the fifth embodiment, a bolt 14 is provided as a stop member penetrating each of the wall 2, the steel plates 4 and 5, the belt-like continuous sheets 6 and 7, and the pressing plate 8, and both the front and back surfaces 2 a and 2 b of the wall are provided. By attaching a nut 15 to the end of the bolt 14 protruding to the side and tightening the nut 15, the belt-like continuous sheets 6 and 7 are firmly fixed to the wall 2 together with the pressing plate 8. By fixing the belt-like continuous sheets 6 and 7 to the wall 2 as described above, the plurality of steel plates 4 and 5 are joined together. Therefore, according to the fifth embodiment, since the steel plates 4 and 5 can be integrally joined at the wall 2, for example, a column is not required to join the steel plates together.

  In addition, in the said 1st-5th embodiment, although the grout material was used as a filler, it may replace with this grout material and may use resin-made adhesive agents, for example. In any case, any filler can be used as long as the filler between the steel plate and the wall can be secured. However, these fillers need to be fluid enough to be injected into the space between the wall and the steel plate. This is because the wall surface has many fine irregularities, but it is necessary for the filler to reach the entire wall surface including these irregularities in order to maintain the strength of the reinforcing structure.

It is principal part sectional drawing of 1st Embodiment. It is a principal part perspective view of 1st Embodiment. It is an expanded sectional view of the important section of a 1st embodiment. It is principal part sectional drawing of 2nd Embodiment. It is principal part sectional drawing of 3rd Embodiment. It is principal part sectional drawing of 4th Embodiment. It is principal part sectional drawing of 5th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pillar 1a Corner | angular part 2,3 Wall 2a, 3a Wall surface 2b, 3b Wall back surface 4,5 Steel plate L Space | interval 6,7 Belt-like continuous sheet 8 Holding plate 9 Bolt 11 which is a stopping member Grout material 13 which is a filler Driving member

Claims (6)

  A plurality of steel plates are made continuous by overlapping their end portions, and a plurality of the continuous steel plates are arranged along at least the front and back sides of the wall of the building, and a belt-like continuous sheet is attached to the outside of the steel plates. A structure for reinforcing a wall of a building, in which the plurality of steel plates are integrally joined while a filler is filled between the steel plates and the wall.   The plurality of steel plates with the end portions overlapped along both the front and back sides of the wall of the building and the front and back sides of the column continuous with the wall, and a belt-like continuous sheet is bonded to these steel plates. Reinforcement structure of the building.   The wall reinforcing structure for a building according to claim 1 or 2, wherein the filler is one of mortar, grout material, and resin-based adhesive.   The wall reinforcing structure for a structure according to any one of claims 1 to 3, wherein an interval is provided between the steel plate and the wall or between the steel plate and the wall and the column, and a filler is filled in the interval.   A belt-like continuous sheet and a steel plate are attached to the wall or the outer side of the belt-like continuous sheet by a stopper member that passes through the pressure plate in a direction substantially perpendicular to the direction in which the belt-like continuous sheet is attached. The wall reinforcement structure for a building according to any one of claims 1 to 4, wherein the structure is fixed to a column continuous with the wall.   The wall reinforcing structure for a building according to claim 5, wherein the pressing plate is placed along a corner portion formed at a joint portion between the wall and the pillar.

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