JP5936020B2 - Reinforcement structure of building - Google Patents

Description

  In the present invention, a plurality of divided frame plates are combined to form one unit enclosure frame, and a plurality of the unit enclosure frames are stacked along the longitudinal direction of the existing columns. It is related with the reinforcement structure of the building which fills the grout material in the space | interval formed between.

As this type of reinforcing structure, one disclosed in Patent Document 1 has been conventionally known. In this conventional reinforcing structure, a single unit enclosure frame is configured by combining a plurality of divided frame plates.
The divided frame plate has a pair of plate portions bent at a right angle, and a vertical rib portion and a horizontal rib portion that are continuous with the plate portion on each of a vertical edge and a horizontal edge of the plate portion.

And the said unit enclosure frame is comprised by abutting the vertical rib parts of an adjacent division | segmentation frame board.
Further, the horizontal rib portions of the divided frame plate constituting the unit enclosure frame are abutted, the unit enclosure frame is laminated along the longitudinal direction of the existing columns, and the laminated unit enclosure frame and the existing columns are laminated. There is a gap between

A belt-like sheet (not shown) is wound around the laminated unit enclosure frame to integrate each of the divided frame plates and the unit enclosure frame.
When the band-like sheet is wound as described above and the divided frame plate and the unit enclosure frame are integrated, the grout material is filled into the gap formed between the unit enclosure frame and the existing column. When the grout material is filled, the unit frame and the grout material are integrated into the grout material filled with the rib portion.

  The greatest feature of the conventional reinforcing structure as described above is that when a seismic force is applied, the lateral rib portion and the longitudinal rib portion which are abutted with each other slide relatively to exert a damping effect. It is. That is, since the rib portions slide relative to each other, heat is generated in the sliding portions, so that the seismic force is converted into thermal energy, and a vibration damping effect is exhibited.

JP 2013-181332 A

In the conventional reinforcing structure as described above, the relative sliding number of the rib portion is reduced with respect to a small seismic force, and the frictional force is reduced accordingly. If the frictional force is small in this way, the seismic force can hardly be converted into thermal energy.
However, no matter how small the seismic force is, if the rib portion slides relatively, the solidified grout material will be scraped or cracked. And if a small seismic force acts repeatedly, the grout material will collapse more and cracks will become larger, so the grout material will become weaker and the reinforcing effect will be diminished.

Therefore, the conventional reinforcement structure can be expected to have a damping effect if a large seismic force is applied and a large thermal energy is generated by the relative sliding of the ribs. There was a problem that the effect of reducing the reinforcement effect was greater than the vibration effect.
The object of the present invention is to prevent the grouting material from collapsing and cracking by pressing the relative sliding of the rib portion when a small seismic force is applied, and when the large seismic force is applied to the rib portion. The object is to provide a reinforcing structure that exerts a vibration control effect by relative sliding.

According to the present invention, a single unit enclosure frame is configured by combining a plurality of divided frame plates. When the divided frame plate encloses an existing column when the plate portion and the unit enclosure frame surround the existing column, the unit enclosure frame is formed. And a rib portion extending along at least one of a vertical edge and a horizontal edge of the plate portion, the rib portions of the divided frame plate are abutted with each other, and the unit enclosure frame is an existing one. Laminated along the longitudinal direction of the pillar , a tough belt-like sheet is wound and bonded around the laminated unit enclosure frame, and the gap formed between the unit enclosure frame and the existing pillar is formed. The present invention relates to a reinforcing structure for a building in which a grout material is filled and the rib portion is embedded in the grout material.

According to the first aspect of the present invention, a welding groove is formed by combining the groove constituent portions in the abutting portion where the rib portions of the divided frame plates are abutted with each other, and the welding material is melt-filled in the entire length or a part of the welding groove. and a linking portion, the connecting portion, the strength was less than the strength of the divided frame plate, when the force in the direction of separating the divided frame plate to each other acts, broken before the split frame plate is set to intensity, within acceptable limits of the strength of the connecting portion, a first step of connecting state of the connecting portion is maintained, is the connecting portion when exceeding the allowable limit is broken, the rib portions and grout The second stage in which the material moves relative to each other and breaks the grout material to absorb the seismic force, and the third stage in which the rib parts rub against each other in the butt portion to convert the seismic force into heat energy is realized. It is characterized in that it is configured as follows.

  According to the reinforcing structure of the first invention, when a small seismic force is applied, the connecting portion maintains the coupling force and prevents relative movement between the divided frame plates or the unit enclosure frames. The grout material will not be scraped or cracked. Therefore, when a small seismic force is applied, a sufficient reinforcing effect can be exhibited by the holding force for holding the grout material with the unit enclosure frame.

On the other hand, when a large earthquake force is applied, the connecting portion is broken and the rib portions slide relative to each other, so that the earthquake force is absorbed while the grout material is broken. And when a big seismic force acts , relative sliding is ensured, while the rib parts closely contact with each other due to the toughness of the belt-like sheet, so that the frictional force can be kept large. Thus , heat is generated by the frictional force generated by the sliding of the rib portions, and the seismic force is converted into thermal energy, so that a great vibration damping effect can be exhibited.
In any case, the strength of the connecting portion depends on how much the seismic force causes the rib portions to slide relative to each other. In other words, the strength of the connecting portion is determined by how much seismic force is applied to break the connecting portion and generate thermal energy due to the frictional force between the rib portions.

Thus, according to the first invention, for a small earthquake, the unit enclosure frame tightly surrounds the existing column and maintains the seismic strength. And when a big earthquake acts, a connection part will be fractured | ruptured and a rib part will be slidable. Therefore, the rib portion exhibits a vibration damping effect while breaking the grout material. When an even greater earthquake acts, the ribs rub against each other greatly, generating heat there. Therefore, the seismic force is converted into thermal energy, and the damping effect is exhibited.
As described above, since the function of almost three stages can be exhibited according to the level of the magnitude of the seismic force, the effect of providing the rib portion can be exhibited without regret.

Moreover, since the welding groove is formed outside the unit enclosure frame, the welding material can be melt-filled into the welding groove from the outside of the unit enclosure frame. Therefore, in the process of stacking the unit enclosure frames, the welding material can be melt-filled in the welding groove, and the workability is extremely good.
Moreover, the groove structure part which comprises the said welding groove can be formed using the circular arc of the minimum bending radius formed at the time of the bending process, when a rib part is formed by a bending process. Thus, since a groove structure part is formed simultaneously with a bending process, the special process process for forming a groove structure part is not required.

Further, the overall strength of the connecting portion can be adjusted by increasing or decreasing the length of the portion where the welding material is melt-filled. Moreover, the whole intensity | strength of a connection part can be adjusted by deepening the groove | channel of the said welding groove and adjusting the quantity of a welding material.
Therefore, the strength of the connecting portion can be easily adjusted according to the characteristics of the building such as the strength of the existing pillars, and can meet various purposes according to the building.

It is a perspective view of the state which laminated | stacked the two unit enclosure frames of 1st Embodiment. It is a perspective view of the division | segmentation frame board of 1st Embodiment. It is sectional drawing of the welding groove part of 1st Embodiment. It is sectional drawing of the part which faced together the ribs of the reference example 1 , and was fixed with the adhesive agent. It is sectional drawing of the part which faced together the ribs of the reference example 2 , and was fixed with the screw. It is sectional drawing of the reinforcement structure of 2nd Embodiment. It is sectional drawing of the reinforcement structure of 3rd Embodiment. It is sectional drawing of the reinforcement structure of 4th Embodiment. It is sectional drawing of the reinforcement structure of 5th Embodiment. It is sectional drawing of the reinforcement structure of 6th Embodiment. It is sectional drawing of the reinforcement structure of 7th Embodiment.

The unit enclosure frame A according to the first embodiment shown in FIGS. 1 to 3 includes four divided frame plates 1. As shown in FIG. 2, the divided frame plates 1 have a pair of vertical plate portions 1a, 1b and a pair of vertical edges at vertical edge portions that become vertical when the divided frame plate 1 is set up vertically. The rib portions 1c and 1d are formed at right angles to the plate portions 1a and 1b.
In addition, in the portion of the horizontal edge that is in the horizontal direction at the top and bottom of the plate portions 1a and 1b that are vertically set up, a pair of horizontal rib portions 1e and 1f on the upper side and a pair of horizontal rib portions 1g and 1h on the lower side, The plate portions 1a and 1b are formed at right angles.

When the unit enclosure frame A is configured by combining the four divided frame plates 1, the vertical rib portions 1 c and 1 d of the adjacent divided frame plates 1 are butted together to form the butted portion 6.
Further, when the unit enclosure frame A is laminated, the lateral rib portions 1e and 1f of the lower unit enclosure frame A and the lateral rib portions 1g and 1h of the upper unit enclosure frame A are overlapped with each other. The mating unit 6 is configured.

  In the first embodiment, the unit rectangular frame A having a rectangular plane is configured by using the four divided frame plates 1. For example, the unit rectangular frame A is configured by a pair of the divided frame plates 1. You may make it do. Also in this case, it is natural to provide rib portions corresponding to the vertical rib portions 1c and 1d and the horizontal rib portions 1e to 1h.

FIG. 1 shows a state in which two unit enclosures A are laminated. These unit enclosures A are laminated along the longitudinal direction of an existing pillar (not shown). The number of frames A stacked differs depending on the length of the existing pillars.
And when laminating the unit enclosure frame A, a predetermined interval is maintained between the unit enclosure frame A and the existing pillars, and a belt-like sheet having toughness (not shown) is provided around the unit enclosure frame A. While being rolled and bonded, a grout material is filled in a space between each unit enclosure frame A and the existing pillar.

Further, groove constituting portions 2 and 3 are formed along ridge lines formed at the bent portions of the plate portions 1a and 1b and the vertical rib portions 1c and 1d (see FIG. 3), and the plate portions 1a and 1b and the horizontal ribs are formed. Similar groove constituent parts 2 and 3 are formed along ridge lines formed in the bent portions with the parts 1e to 1h.
When the plate portions 1a and 1b and the vertical rib portions 1c and 1d or the plate portions 1a and 1b and the lateral ribs 1e to 1h are bent, an arc having at least a minimum bending radius is formed in the bent portion. However, the arc having the bending radius may be used as the groove constituting portions 2 and 3. If the arcs of the bending radii are the groove constituent parts 2 and 3, the groove constituent parts 2 and 3 are formed at the same time as the bending process. do not need.

  Since each of the groove constituent portions 2 and 3 formed in this way has an arc shape in cross section, the pair of groove constituent portions 2 and 3 are combined together to form the weld groove 4 when the rib portions are abutted. It is formed. The weld groove 4 thus formed is melt-filled with a metal welding material 5 to connect each of the divided frame plates 1 and the stacked unit enclosure frames A, and the melt-filling of the welding material 5 is performed. This part is used as a connecting part 7.

  The weld groove 4 has a so-called flare type using a curve formed when the vertical rib portions 1c and 1d and the horizontal rib portions 1e to 1h are bent with respect to the plate portions 1a and 1b. A welding groove having a rectangular cross-sectional shape or a welding groove having a triangular cross-sectional shape may be used.

  And in this 1st Embodiment, the intensity | strength of the connection part 7 which melt-filled the welding material 5 is made weaker than the intensity | strength of the division | segmentation frame board 1. FIG. In other words, the divided frame plate 1 is not broken even if a considerably large force is applied, but the connecting portion 7 is broken before the divided frame plate 1 is broken. Therefore, when a large force that breaks the divided frame plate 1 is applied, the connecting portion 7 breaks first before the divided frame plate 1 breaks.

The strength of the connecting portion 7 can be freely adjusted according to the overall length of the connecting portion 7, the amount of the welding material 5 to be melt-filled in the weld groove 4, and the like.
In the present invention, the strength of the connecting portion 7 by welding is made weaker than the strength of the divided frame plate 1 as described above. The reason will be described below in order.

The greatest feature of the reinforcing structure provided with the vertical rib portions 1c and 1d and the horizontal rib portions 1e to 1h is to use heat generated by sliding the rib portions relatively when an earthquake force is applied. In other words, the seismic force is converted into thermal energy to exert the damping effect.
However, on the other hand, if the vertical rib portions 1c and 1d and the horizontal rib portions 1e to 1h move in the hardened grout material, the grout material will collapse or crack.

  However, because the grout material is held by the unit enclosure A, even if it is slightly broken or cracked, it does not have a significant effect on the reinforcement effect, but if a small seismic force acts repeatedly over a long period of time. That ’s how much the grout material collapses and cracks. If the grout material solidified in this way is greatly broken or cracked, the grout material itself becomes weak and the reinforcing effect is diminished.

On the other hand, in a small earthquake, that is, an earthquake with small shaking and short time, the damping effect is not so required. Further, in such a small earthquake, the relative sliding amount of the vertical rib portions 1c and 1d and the horizontal rib portions 1e to 1h is also small, so that almost no thermal energy is generated to absorb the earthquake energy. .
Therefore, in a small earthquake, the vertical rib portions 1c and 1d and the horizontal rib portions 1e to 1h can maintain the strength of the grout material rather than being relatively slid rather than sliding relative to each other. From the viewpoint of the reinforcing effect, it is advantageous.

However, in the case of a large earthquake, that is, an earthquake with a large shaking and a long time, it is more advantageous to protect the building if the damping effect is exhibited.
Therefore, in the first embodiment, as described above, the point that the strength of the connecting portion 7 by welding is weaker than the strength of the divided frame plate 1 is actively used.
That is, in the case of a small earthquake, the connecting portion 7 by welding maintains its connected state, preventing relative sliding of the vertical rib portions 1c, 1d and the horizontal rib portions 1e-1h, Prevent cracking.

And when the big earthquake acts and the connection part 7 by the said welding fractures | ruptures, while the unit enclosure frame A is maintained with the above-mentioned strip | belt-shaped sheet, the division | segmentation frame board is based on the toughness of this strip | belt-shaped sheet | seat. 1 and the unit enclosure A are kept movable. If the divided frame plate 1 or the unit enclosure frame A moves, the solidified grout material breaks down, but the energy when the grout material is broken in this way exerts a damping effect. .
When a larger earthquake acts, the longitudinal rib portions 1c and 1d and the lateral rib portions 1e to 1h slide relative to each other, and frictional heat is generated between them, so that the energy of the seismic force can be converted into thermal energy. Can be achieved, and a greater vibration suppression effect is exhibited.

  As described above, according to the first embodiment, for a small earthquake, the unit enclosure frame A firmly surrounds the existing column and maintains the seismic strength. And when a big earthquake acts, the vertical rib parts 1c and 1d and the horizontal rib parts 1e-1h destroy a grout material, and the damping effect is exhibited. When a larger earthquake occurs, the seismic force is converted into thermal energy and the damping effect is exhibited.

  Note that the strength of the connecting portion 7 can be easily adjusted by the overall length and the amount of the welding material 5. Of the three-stage processes, how much coupling strength is maintained in the first-stage process depends on the strength of the existing building, the design concept, and the like. However, as described above, the strength of the connecting portion 7 can be easily adjusted according to the overall length and the amount of the welding material 5, so the strength of the connecting portion 7 is determined according to the strength and design concept of the existing building. Can do.

  That is, according to the first embodiment, since the earthquake resistance effect is exhibited through a three-stage process, for example, the strength of the grout material is not weakened by a series of small earthquakes as in the prior art. Moreover, when a large earthquake is applied, the grout material collapses to some extent, but a great damping effect is exhibited while sacrificing the grout material to some extent.

Moreover, in this 1st Embodiment, although each division | segmentation frame board 1 was couple | bonded by the connection part 7, if a strip | belt-shaped sheet is wound around the unit enclosure frame A which consists of this division | segmentation frame board 1 and it adhere | attaches, each division | segmentation will be carried out. The coupling force of the frame plate 1 is increased. However, this belt-like sheet is made of fibers and needs to have toughness. This is because if the belt-like sheet has no toughness, the rib portions cannot be relatively slid while the rib portions are in close contact after the connecting portion 7 is broken.
In addition, bending strength can be improved by arrange | positioning the axial direction stripe | line along the existing pillar in the four corners of the said enclosure frame A, and embed | buying them in grout material.

In Reference Example 1 shown in FIG. 4, an adhesive 8 is interposed in the abutting portion 6 between the vertical rib portions 1 c and 1 d and the horizontal rib portions 1 e to 1 h. The divided frame plate 1 and the stacked unit enclosure frames A are connected to each other, and a portion bonded with the adhesive 8 constitutes a connecting portion 9.
In Reference Example 1 as well, when a large force that breaks the divided frame plate 1 is applied, the connecting portion 9 is divided first before the divided frame plate 1 breaks.

Moreover, the intensity | strength of the connection part 9 of the division | segmentation frame board 1 or the unit enclosure frame A can be adjusted by adjusting the application area of the adhesive agent 8 or selecting the kind of adhesive agent.
In the reference example 1 described above, the structure of the connecting portion 9 is different from that of the first embodiment, and other configurations are the same as those of the first embodiment. Moreover, the function of the vertical rib part and the horizontal rib part after the connection part 9 is parted is also the same as that of the first embodiment. Further, also in the first reference example , the belt-like sheet may be wound around the unit surrounding frame A and bonded.

In Reference Example 2 shown in FIG. 5, the connecting portions 11 are formed by connecting the butted portions 6 of the vertical rib portions 1 c and 1 d and the horizontal rib portions 1 e to 1 h with a fastening member 10 such as a screw. It is. And this connection part 11 is made to fracture | rupture before the division | segmentation frame board 1 fractures | ruptures. Therefore, when a large force that breaks the divided frame plate 1 is applied, the connecting portion 11 is broken first before the divided frame plate 1 is broken.

And also in this reference example 2 , the intensity | strength of the said connection part 11 can be set freely. For example, the coupling strength of the connecting portion 11 can be adjusted by selecting the material of the fastening member 10, selecting the thickness thereof, or changing the interval between the fastening members 10.

The reference example 2 is the same as the reference example 1 except that the configuration of the connecting portion 11 is different from the configuration of the connecting portion 9 of the reference example 1 . Moreover, the function of the vertical rib part and horizontal rib part after the connection part 11 is parted is the same as 1st Embodiment.
Furthermore, as long as the fastening member 10 in this reference example 2 can fix rib parts, such as a combination of a volt | bolt and a nut, what kind of member may be used.
Alternatively, the belt-like sheet may be wound around the unit enclosure frame A and bonded.

In the second embodiment shown in FIG. 6, the unit frame B that surrounds the entire circumference of the existing pillar 12 is formed by the divided frame plate 13. The shape of the divided frame plate 13 is different from that of the divided frame plate 1 of the first embodiment shown in FIG.
The divided frame plate 13 is formed with a pair of vertical rib portions 13b and 13c at a vertical edge portion which becomes a vertical direction when the plate portion 13a is erected in a direction that is 45 ° with respect to the plate portion 13a. ing.
In addition, lateral rib portions 13d and 13e are formed at right angles to the plate portion 13a at the portion of the lateral edge that extends in the horizontal direction above and below the plate portion 13a standing vertically.

When the unit frame B is configured by combining the four divided frame plates 13, the vertical rib portions 13b and 13c and the horizontal rib portions 13d and 13e of the adjacent divided frame plates 13 are brought into contact with each other. The connection part 7 is comprised by the welding material in the groove | channel structure part formed similarly to 1st Embodiment shown in FIG.
In addition, the code | symbol g in the said FIG. 6 is a grout material, and the code | symbol 14 is an axial direction streak. These symbols are also used in FIGS. 7 to 11 described below.
And the intensity | strength of the said connection part 7 is made weaker than the intensity | strength of the division | segmentation frame board 1. FIG. Therefore, the second embodiment also functions in the same manner as the first embodiment, and the same effect as the first embodiment can be obtained.

That is, for a small earthquake, the unit enclosure frame B firmly surrounds the existing pillar 12 and maintains the earthquake resistance strength. And when a big earthquake acts, the vertical rib parts 13b and 13c and the horizontal rib parts 13d and 13e destroy the grout material g, and the damping effect is exhibited. When a larger earthquake occurs, the seismic force is converted into thermal energy and the damping effect is exhibited.
In addition, in this 2nd Embodiment, in order to surround the perimeter of the existing pillar 12 with the said unit surrounding frame B, a part of wall 15 is cut | disconnected. If the wall 15 is cut in this way, the entire circumference of the existing column 12 can be surrounded even when the wall 15 is coupled to the existing column 12.

The unit enclosure frames A and B of the first or second embodiment are configured to surround the entire circumference of the existing pillar. For example, as in the third embodiment shown in FIG. Only the unit enclosure frame C may be enclosed.
The unit enclosure frame C is composed of a pair of divided frame plates 16 and 17. Each of the divided frame plates 16 and 17 has vertical rib portions 16b and 17b on one vertical edge of the plate portions 16a and 17a bent in an L-shaped cross section, and horizontal rib portions 16c and 17c and horizontal rib portions on the upper and lower horizontal edges. 16d and 17d.
And the connection part 7 is formed with the welding material in the butt | matching part of vertical rib part 16b, 17b, horizontal rib part 16c, 16d, 17c, 17d similarly to 1st Embodiment. Each connecting portion 7 functions in the same manner as in the first embodiment, and the same effect as in the first embodiment can be obtained.
In addition, the said unit enclosure frame C shall be attached to the existing pillar 12 by the means which is not shown in figure.

Further, in the existing column 12 in which the wall 15 is continuous on the side surface, the existing column 12 can be surrounded by a combination of a plurality of unit enclosures, avoiding the portion of the wall 15.
The fourth embodiment shown in FIG. 8 reinforces the existing pillar 12 in which the walls 15 and 15 are continuous on opposite side surfaces. And this 4th Embodiment uses the unit enclosure frame D which made the width | variety larger than the unit enclosure frame C of 3rd Embodiment of FIG. The unit enclosure frame D is arranged on both sides of the walls 15 and 15 so as to surround both sides of the existing pillar 12.

The unit enclosure frame D is composed of a pair of divided frame plates 18 and 19.
Each of the divided frame plates 18 and 19 includes a vertical rib portion 18b at the vertical edge of the plate portions 18a and 19a bent in an L-shaped cross section, 19b and attachment portions 18c and 19c, and a horizontal rib at the upper and lower horizontal edges. It has portions 18d and 19d and lateral rib portions 18e and 19e.
Also in the fourth embodiment, the connecting portion 7 is formed by a welding material at the abutting portion between the vertical rib portions 18b and 19b, the horizontal rib portions 18d and 18e, and the horizontal rib portions 19d and 19e. Each connecting portion 7 functions in the same manner as in the first embodiment, and the same effect as in the first embodiment can be obtained.

The fifth embodiment shown in FIG. 9 reinforces an existing pillar 12 in which two walls 15 and 15 are orthogonal to each other, and surrounds one corner sandwiched between the walls 15 and 15 with a unit enclosure frame E, and the remaining The corner is surrounded by another unit enclosure frame F.
The pair of divided frame plates 20 and 21 constituting the unit enclosure frame E includes vertical rib portions 20b and 21b and mounting portions 20c and 21c on the vertical edges of the plate portions 20a and 21a, and on the upper and lower horizontal edges. The horizontal rib portions 20d and 21d and the horizontal rib portions 20e and 21e are provided. The vertical rib portions 20b and 21b protrude in a 45 ° direction with respect to the plate portions 20a and 21a.

Further, the unit enclosure frame F is configured by arranging the divided frame plates 22 and 23 on both sides of the same divided frame plate 1 as in the first embodiment.
The divided frame plates 22 and 23 include plate portions 22a, 22b, 23a, and 23b that are perpendicular to each other. Vertical rib portions 22c and 23c are provided at the vertical edges of the plate portions 22a and 23a, and the vertical portions of the plate portions 22b and 23b. Mounting portions 22d and 23d are provided on the edge. Furthermore, the horizontal rib part 22e, 22f and the horizontal rib part 23e, 23f are provided in the up-and-down horizontal edge of each board part 22a, 23a.
Also in the fifth embodiment, the connecting portion 7 is formed by a welding material at the abutting portion between the vertical rib portions and the horizontal rib portions. Each connecting portion 7 functions in the same manner as in the first embodiment, and the same effect as in the first embodiment can be obtained.

The sixth embodiment shown in FIG. 10 is a reinforcing structure of the existing pillar 12 whose walls 15 are orthogonal to the three side surfaces.
This reinforcing structure is provided with the unit reinforcing frame E of the seventh embodiment shown in FIG. 9 between the orthogonal walls 15 and 15, and on the side of the pair of walls 15 and 15 arranged in a straight line, FIG. A unit enclosure frame D of the fourth embodiment shown in FIG.
In the sixth embodiment as well, the connecting portion 7 is formed by a welding material at the abutting portion between the vertical rib portions and the horizontal rib portions. Each connecting portion 7 functions in the same manner as in the first embodiment, and the same effect as in the first embodiment can be obtained.

The seventh embodiment shown in FIG. 11 is a reinforcing structure in which the existing columns 12 whose walls 15 are orthogonal to the four side surfaces are surrounded by four unit enclosure frames E, respectively. Each unit enclosure frame E is the same as the unit enclosure frame E of the fifth embodiment of FIG.
And the connection part 7 is formed with the welding material in the butt | matching part of the vertical ribs of the said unit enclosure frame E, and horizontal ribs. Each connecting portion 7 functions in the same manner as in the first embodiment, and the same effect as in the first embodiment can be obtained.

In addition, although the connection part 7 formed with a welding material was demonstrated in 2nd- 7th embodiment, it replaces with this connection part 7 and can apply the connection part of the said reference example 1 or the reference example 2 as reference. Good.
In the first to seventh embodiments, a welding material, an adhesive, a fastening member, or the like is used as the connecting portion . For reference, for example, the vertical rib portions or the horizontal rib portions are spot-welded. It is good also as a coupling | bonding part.
Furthermore, a belt-like sheet may be bonded around the unit enclosure frames B to F.

In addition, the unit enclosure frames A to F of the first to seventh embodiments all have the vertical rib portion and the horizontal rib portion at the same time. Only one of the lateral rib portions may be provided. Even in the unit enclosure frame having only one of the vertical and horizontal rib portions, the connecting portion between the rib portions functions in the same manner as in the above embodiment.
Further, the plate portion, the vertical rib portion and the horizontal rib portion may be formed by joining different members in addition to forming the plate material by bending.

  Further, when the axial streak 14 (see FIG. 6) is arranged inside the unit enclosure frame having the lateral rib portion, a guide recess for fitting the axial streak 14 is formed in a part of the lateral rib portion. May be. If such a guide recess is formed, it is possible to prevent the outer peripheral dimension of the unit enclosure frame from increasing due to the arrangement space of the axial stripes 14 and the width of the lateral rib portion. When the outer peripheral dimensions of the unit enclosure frame are increased, there may be a problem that the living space is narrowed. However, the problem can be reduced by arranging the axial streak in the guide recess.

The divided frame plate constituting the unit enclosure frame is made of various materials such as a steel plate and a reinforced plastic plate, and various connection means are used for the connection portion depending on the material of the unit enclosure frame. You can choose.
Moreover, the position and angle of the vertical rib part and the horizontal rib part in each division | segmentation frame board, and the combination of a unit enclosure frame are not limited to above-described embodiment.

  It is ideal for retrofitting existing pillars of buildings.

A, B, C, D, E, F Unit enclosure frame 1 Split frame plate 1a, 1b Plate portion 1c, 1d Vertical rib portion 1e, 1f Horizontal rib portion 1g, 1h Horizontal rib portion 2, 3 Groove component 4 Welding Groove 5 Welding material 6 Butting portion 7, 9, 11 Connecting portion 10 Fastening member 12 Existing column 13 Split frame plate 13a Plate portion 13b, 13c Vertical rib portion 13d, 13e Horizontal rib portion 16, 17 Split frame plate 16a, 17a Plate Portions 16b, 17b Vertical rib portions 16c, 16d, 17c, 17d Horizontal rib portions 18, 19 Split frame plates 18a, 19a Plate portions 18b, 19b Vertical rib portions 18d, 18e, 19d, 19e Horizontal rib portions 20, 21 Split frame plates 20a, 21a Plate portions 20b, 21b Vertical rib portions 20d, 20e, 21d, 21e Horizontal rib portions 22, 23 Split frame plates 22a, 22b, 23a, 23b Plate portions 22c, 23c Vertical rib portions 22e, 22f, 23e 23f horizontal rib portion g grout

Claims (1)

One unit enclosure frame is configured by combining a plurality of divided frame plates,
In the divided frame plate, when the plate portion and the unit enclosure frame surround the existing column, the divided frame plate protrudes toward the existing column and extends along at least one of the vertical edge or the horizontal edge of the plate portion. Ribs are provided,
While the rib portions of the divided frame plates are abutted with each other, the unit enclosure frame is laminated along the longitudinal direction of the existing columns,
A band-like sheet having toughness is wound and bonded around the laminated unit enclosure frame,
Grout material is filled in the space formed between this unit enclosure frame and the existing pillar,
In the reinforcing structure of the building in which the rib part is embedded in this grout material,
A groove constituting part is formed along a ridge line formed in a bent part of the plate part and the rib part,
A weld groove is formed by combining the groove constituent portions in the abutting portions where the rib portions of the divided frame plates are abutted with each other.
This connecting portion is set to a strength that breaks before the divided frame plate when the force acts in the direction of separating the divided frame plates from each other with the strength smaller than that of the divided frame plate.
A first stage in which the connection state of the connection part is maintained within an allowable limit of the strength of the connection part;
Is the connecting portion is broken when it exceeds the allowable limit, a second step of absorbing the seismic force and the rib portion and the grout is destroy the grout relative movement,
A reinforcing structure for a building in which the rib portion is rubbed in the butt portion and the third stage of converting the seismic force into heat energy is realized.

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