JP2005155049A - Anti-seismic reinforcing structure for building construction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-seismic reinforcing structure for a building construction, which is achieved by firmly arranging an intermediate member (stud) of a simple structure on an immediately front portion or rear portion of a column, at a location between upper and lower additional beam members connected to existing beams, respectively, to thereby minimize a shearing force and a load bearing capacity imposed thereon. <P>SOLUTION: According to the anti-seismic reinforcing structure, a desired number of the intermediate members 13 are arranged at the immediately front portions of the columns 11, 11, and the additional upper and lower beam members 14, 14 are arranged on front portions of the existing upper and lower beams 12a, 12b, followed by fixing the upper and lower beams 12a, 12b and the upper and lower beam members 14, 14 to each other at inflection points P1, P2 that are displaceable when a horizontal force is applied to the beams 12a, 12b and the beam members 14, 14, as pin fulcrums by slightly longer diameter pin members 14a, 14b. Then each intermediate member 13 is firmly arranged on a lower surface and an upper surface of the additional beam member 14 by fixing means such as anchor bolts or a welding means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a seismic reinforcement structure for various building structures such as reinforced concrete and steel reinforced concrete structures.

Conventionally, as an example of this type of earthquake-resistant structure or damping structure, there is a technique disclosed in Japanese Patent Application Laid-Open No. 2003-49558 shown in FIGS. 11 is a front view, and FIG. 12 is a cross-sectional view taken along the line AA in FIG.
If it demonstrates about this, the structural frame of a building will comprise the pillar 1 which fills a square steel pipe with concrete, and the beam 2 made from H-shaped steel, and it will be comprised by the pillar and beam junction part 3. Further, a damping pillar 5 having a viscoelastic damper 4 in the middle is disposed between the beams 2 and 2. As shown in FIG. 10 to FIG. 12, the damping damping column 5 made of an H-shaped steel material is fixed to the beams 2 and 2 via upper and lower flanges 6a and 6b and a reinforcing plate. The upper and lower flanges 6a and 6b and the upper and lower ends of the vibration damping pillars 5 are fixed by fixing bolts 8a and 8b by joining plates 7a and 7b. The upper and lower flanges 6a and 6b are made of an H-shaped steel material, and welded portions 6c and 6d are directly joined to the beams 2 and 2 by welding. The outer ends of the upper and lower flanges 6a and 6b may be fixed with fixing bolts 6e and 6f.

As shown in FIG. 12, the viscoelastic damper 4 has inner and outer steel plates 4a and 4b fixed to the both side surfaces of the damping damping column 5 by fixing bolts 4c and 4d so as to protrude from the respective ends. . Each of the inner and outer steel plates 4a and 4b facing in the opposite direction from the vertical direction is a mode in which comb teeth are engaged with each other via a gap, and a plurality of layers of gaps formed between the inner and outer steel plates 4a and 4b are rectangular in shape. A plurality of viscoelastic bodies 4d made of a solid body having a predetermined plate thickness, for example, a rectangular size of 2.0 m 2 and a plate thickness of 5 mm are sandwiched, and both side surfaces thereof are fixed to the side surfaces of the inner and outer steel plates 4 a and 4 b. Each of the inner and outer steel plates 4a and 4b is fixed to both side surfaces of the vibration damping column 5 via spacers. Further, the beam 2 and the beam 2 are connected to both sides of the upper and lower flanges 6a and 6b and the fixing bolts 10a and 10b with plates by the canes 9 and 9. The proof strength of the joints 6c and 6d is reinforced.
The material of the canes 9 and 9 is configured by a material having a buckling strength such as a steel plate having a predetermined thickness and an H-shaped steel.

Thus, when an earthquake occurs, a horizontal force acting on the upper and lower beams 2 and 2 of the structural frame is transmitted as a shearing force to the viscoelastic damper 4 via the damping pillars 5 and deforms. The damping action is transmitted from the viscoelastic damper 4 to the vibration control column 5 and from the center of the beams 2 and 2 to the column / beam joint 3 to attenuate the vibration of the building.
Japanese Patent Laid-Open No. 2003-49558

Since the conventional technology has the above-described configuration and operation, the following problems existed.
Damping columns 5 with viscoelastic dampers 4 provided between the beams 2 and 2, that is, existing beams, are arranged directly above and below the damping columns 5, and upper and lower flanges 6 a and 6 b. It is fixed to the beams 2 and 2 via. The upper and lower flanges 6a and 6b and the vibration control pillar 5 are wound in two steps on the surfaces of the joining plates 7a and 7b attached to the front, rear, left and right surfaces, and a large number of fixing bolts 8a and 8b are driven. Or it was the structure connected by screwing.

Further, the viscoelastic damper 4 as the vibration energy absorbing portion has a configuration in which the inner and outer steel plates 4a and 4b are combined to face each other and are fastened together with a plurality of fixing screws or the like with a spacer interposed therebetween.

Further, the upper and lower flanges 6a and 6b form welds 6c and 6d and outer edges, and are fixed to the upper and lower beams 2 and 2 by a large number of fixing bolts 6e and 6f.

Since the conventional technology has such a configuration, the damping pillar 5 as well as the viscoelastic damper 4 is complicated, and the fixing means and work man-hours for connecting to the beams 2 and 2 are greatly increased. In addition, the increase in the number of connecting brackets and parts increases the construction cost, and it is difficult to carry out repair work in a short construction period and implementation of seismic structures for building structures. In addition, when a strong horizontal force is applied to the structural framework of the building in the event of an earthquake or the like, an excessive horizontal force is directly applied to the damping pillar 5 and the viscoelastic damper 4 to ensure durability. Therefore, there is a problem that a vibration-damping stud and a viscoelastic damper having a large load bearing capacity are adopted or the apparatus is enlarged.
And in order to ensure the strength of the structural framework of the building, it is necessary to provide the canes 9 and 9 between the both sides of the upper and lower flanges 6a and 6b and the beams 2 and 2, further increasing the number of connecting parts. There was a problem that it was forced and a connection work man-hour was added.

Another example of this type of conventional technology is that there is a method of seismically reinforcing the structure of an existing building from the outside, and there are a number of methods and joint plates that use multiple anchor bolts to fix composite plates. There are methods such as driving a reinforced concrete steel rod and fixing it with the frictional force between the joint plate and the beam or column, but all have a problem that the resistance to horizontal force is weak and unsuitable for practical use. There was a negative effect of noise or vibration and dust generation associated with the drilling operation. In addition, the problem that the load bearing capacity of the existing housing is likely to be weakened has become apparent.

The seismic retrofit structure for a building structure according to the present invention is a building structure composed of a column and beam assembly, and is a pin at the inflection point of the displacement at the front or rear of existing upper and lower beams. Different beams fixed at the fulcrum, for example, steel beams, are installed on the top and bottom, and the horizontal force is reduced by fixing intermediate members made of studs and viscoelastic dampers between the top and bottom of these different steel beams. The feature is that an excessive load is not applied to the above-mentioned different steel beams. With a simple structure, the seismic reinforcement work cost can be reduced and the reinforcement work period can be greatly shortened, and the load resistance is small. The object is to provide a highly feasible seismic reinforcement structure that can be handled by different beam members, and is composed of the following configurations and means.

That is, according to the first aspect of the present invention, in a building structure composed of a joined body of columns and beams, it is a front part or a rear part of the upper and lower beams and is fixed by a fixing means. A beam member and an intermediate member fixed between the upper and lower portions of the different beam member and a desired number of front and rear portions of the column are provided.

According to a second aspect of the present invention, in a building structure composed of a joined body of columns and beams, the front or rear of the upper and lower beams are fixed to the inflection point of the displacement by the fixing means. And a different number of intermediate members fixed between the upper and lower portions of the different beam members.

According to the invention described in claim 3, in a building structure composed of a joined body of columns and beams, it is fixed to the inflection point of the displacement at the front or rear of the upper and lower beams by a fixing means. And a different number of intermediate members fixed to a desired number of portions above and below the different beam members and immediately before or after the column.

According to the fourth aspect of the present invention, in a building structure composed of a joined body of columns and beams, it is fixed to the inflection point of the displacement at the front part or the rear part of the upper and lower beams by fixing means. A different number of beam members, and an intermediate member fixed between the upper and lower portions of the different beam members by a desired number of upper and lower mounting portions.

According to the fifth aspect of the present invention, in the building structure composed of the joined body of the pillar and the beam, the front or rear part of the upper and lower beams is present at a substantially intermediate position between the pillars. Different beam members fixed by nuts and pin members with a spacer interposed at the inflection point of the displacement, and a desired number between the upper and lower portions of the different beam members and immediately before or immediately after the column. And an intermediate member to be fixed.

According to the sixth aspect of the present invention, in the building structure composed of the joined body of the pillar and the beam, the front or rear part of the upper and lower beams is present at a substantially intermediate position between the pillars. Different beam members fixed by nuts and pin members with an in / out adjustment plate interposed at the inflection point of the displacement, and a desired number between the upper and lower portions of the different beam members and immediately before or after the column And an intermediate member to be fixed.

According to the invention described in claim 7, in the invention described in claim 5 or 6, the intermediate member is fixed between the upper and lower parts of the different beam members via the upper mounting portion and the lower mounting portion. Features.

According to the invention described in claim 8, in the invention described in claim 5 or 6, the pin member is formed by injecting a filling adhesive into the shaft portion.

According to the invention of claim 9, in the invention of claim 1, 2, 3, 4, 5 or 6, the different beam member is an H-shaped steel beam member, a steel beam member, It consists of a steel reinforced concrete beam member or a precast beam member.

According to a tenth aspect of the present invention, in the first, second, third, fourth, fifth, sixth or seventh aspect, the intermediate member includes a steel damper, a viscoelastic damper, an oil damper, a friction damper, It consists of a steel brace or a stud type seismic member.

According to the eleventh aspect of the present invention, in a building structure composed of a joined body of columns and beams, it is fixed to the inflection point of the displacement at the front or rear of the upper and lower beams by a fixing means. The desired number of beams are fixed between the different beam members, the left and right outer ends of the building structure and the columns vertically provided between the upper and lower beams, and the upper and lower portions of the different beam members. And an intermediate member.

Since the seismic reinforcement structure for a building structure according to the present invention has the above-described configuration and action, the following effects are obtained.
In other words, according to the present invention, a column and a column can be joined without adopting an earthquake resistant structure by directly attaching an intermediate member or an intermediate column in the prior art to an existing beam and increasing the frame member of the ramen structure. In a building structure composed of a body, a beam member made of different H-shaped steel or the like, which is fixed at the inflection point of the displacement of the upper and lower existing beams by a pin fulcrum Since the intermediate member such as the intermediate column is fixed between the upper and lower sides of the beam and immediately before or after the column, the horizontal force and shear force applied to the intermediate member can be significantly absorbed by excessively absorbing the excessive horizontal force applied to the existing beam. There is an effect that it is possible to provide a high seismic reinforcement structure having excellent feasibility by adopting an intermediate member that is small and has a simple structure and a small load resistance.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a seismic reinforcement structure for a building structure according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an outline of the configuration of an embodiment of the seismic reinforcement structure for a building structure according to the present invention.
Reference numeral 11 denotes a pillar as various building structures such as reinforced concrete and steel reinforced concrete structures, or buildings such as balconies or external corridors. The pillar 11 exists on the left and right. Beams 12a and 12b are provided on the upper and lower sides of the pillars 11 and 11 which are bridged and joined. As described above, the building structure is composed of a joined body of the columns 11 and 11 and the beams 12a and 12b, and exists as a continuous structure having a predetermined interval and corresponding to the size and width.

As shown in FIG. 1, a desired number of intermediate members 13 are arranged in front of the pillars 11 and 11, and different beam members 14 that are vertically different from each other along the front portions of the upper and lower beams 12a and 12b. 14 and a slightly longer pin member 14a, 14b, a horizontal force is applied to the upper and lower beams 12a, 12b and the different upper and lower beam members 14, 14 as shown in FIG. The inflection points P1 and P2 of the displacement are fixed as pin fulcrums. And the inflection points P1 and P2 of the displacement of the beams 12a and 12b extending over two spans, which are substantially intermediate positions between the pillars 11 and 11, for example, a later-described through hole having a cylindrical shape and a slightly long diameter. The pin members 14a and 14b having slightly longer diameters are inserted into the through holes, and the different beam members 14 and 14 are connected and fixed to the upper and lower beams 12a and 12b. Further, the intermediate member 13 may be disposed immediately after the pillars 11 and 11, and is a steel damper, a viscoelastic damper, a steel brace, an oil damper, a friction damper, a stud-type seismic member, a steel stud or a viscoelastic damper. It may be composed of interposition pillars or other intermediary pillars.

The different upper and lower beam members 14, 14 are composed of, for example, H-shaped steel beam members, steel beam members, steel reinforced concrete beam members, or precast beam members. Construction using a lifting machine is also required in the interior of the structure, but the load bearing capacity is enhanced.

Further, in the building structure in which the columns 11 and 11 and the beams 12a and 12b are continuously constructed in the horizontal direction or the vertical direction, the different beam members 14 and 14 and the intermediate member 13 are also corresponding to this. It extends or is arranged and each layer is continuous.
In the configuration shown in FIG. 1, the upper and lower beams 12a and 12b have been described only for one span. However, as the beams 12a and 12b and the columns 11 and 11 of the building structure extend to the left side or the right side, the pin member 14a. 14b and the intermediate member 13 are also continuously fixed.
As will be described later, the intermediate member is anchor bolts on the lower and upper surfaces of different upper and lower beam members 14, 14 at the front part or the rear part of the pillars 11, 11 with or without a base plate interposed therebetween. And fixing means such as fixing bolts or welding means.

The different beam members 14, 14 may be fixedly installed along the rear portions of the upper and lower beams 12a, 12b depending on design specifications.

Next, a configuration in which different beam members 14 and 14 according to the embodiment of the present invention and the existing upper and lower beams 12a and 12b are connected and fixed will be described in detail with reference to FIGS.

FIG. 2 is an enlarged cross-sectional view in the direction of arrow BB in FIG. 1 showing a connecting portion between another upper beam member 14 and the upper beam 12a.
In FIG. 2, the pin member 14a is composed of an anchor bolt or a tie rod, and one end thereof is inserted into a perforation formed in another beam member 14, and the other end is inserted into a through hole 12c penetrating the beam 12a. It is inserted and fixed by caulking with nuts 15a and 15b. The through hole 12c is, for example, a diamond core and has a longer diameter than the shaft portion 14c of the pin member 14a to absorb construction errors. A space between the shaft portion 14c of the pin member 14a and the inner wall surface of the through hole 12c is filled with, for example, a filling adhesive 14d such as mortar, cement paste, epoxy resin, or the like to enable pin bonding as a structural member.

In the figure, 15c and 15c are washers on one end side of the pin member 14a, 15d is a washer on the other end side of the pin member 14a, and 15e is an entrance / exit adjustment plate of the pin member 14a. In the figure, reference numeral 15f denotes a contact seat interposed between the access adjustment plate 15e and the beam 12a.

The above description shows the connecting portion between the different upper beam member 14 and the upper beam 12a, but the connecting portion between the lower different beam member 14 and the lower beam 12b is also the pin member 14b. And the like, and the description thereof is omitted.

FIG. 3 is an enlarged cross-sectional view showing a modified example of the connecting portion between the different beam member 14 and the upper beam 12a shown in FIG. 2, and has the same configuration as that shown in FIG.
In particular, the shaft portion 14c of the pin member 14a is inserted into the space S between the different beam member 14 and the beam 12a via the base mortar 15g and the reinforced concrete base plate 15h. Further, an in / out adjustment plate 15e of the pin member 14a is sandwiched between the nuts 15i and 15j to adjust the set length of the pin member 14a.

The main body center plate portion 14e of the different beam member 14, that is, the vertical center portion of the H-shaped steel beam member is provided with a hole through which the tip end portion of the shaft portion 14c of the pin member 14a is inserted. The entire surface and the rear surface of 14e are sandwiched by so-called doubling plates 14f and 14g, and the entire periphery is treated with welded portions 14h and 14i to ensure complete fixation to the main body center plate portion 14e.
Other constituent members are the same as those of the embodiment shown in FIG.

Further, according to the embodiment of the present invention, the additional configuration example shown in FIG. 4 can be considered. That is, in the building structure described above, at the left and right ends thereof, between the upper beam 12a and the lower beam 12a, the column 14A and the column 14B are provided, for example, a steel plate member 14j such as an H steel plate or an I steel plate. It is installed vertically. The steel plate member 14j is fixed to a pin member 14a fixed to the beam 12a. The other components are substantially the same as those in FIGS. 2 and 3 described above, and the same reference numerals are given and description thereof is omitted.

As the seismic reinforcement method of the embodiment in the above-described seismic reinforcement structure of a building structure according to the present invention, in the building structure composed of a joined body of columns and beams, the upper and lower beams are The different beam member is fixedly set by a pin member at an inflection point or a predetermined position of the displacement of the existing beam along the front portion or the rear portion, and between the upper and lower portions of the different beam member, This is a construction method in which an intermediate member having a function as a stud is fixedly set at the front part or the rear part, and a filling adhesive is injected into the shaft part of the pin member.

The intermediate member 13 does not necessarily include a viscoelastic damper, and may have a function as a simple stud. The intermediate member 13 may have a structure in which the upper end and the lower end thereof are directly fixed to the upper and lower different beam members 14 and 14 with an anchor bolt from the joining plate surface or the like, or as described later. The intermediate member 13 is fixedly disposed on the upper and lower different beam members 14 and 14 via an upper mounting portion and a lower mounting portion.

Next, the operation and the like of the earthquake-proof reinforcement structure for a building structure in the embodiment according to the present invention described above will be described.
When the horizontal force shown by the arrow F in FIG. 5 is applied to the upper and lower beams 12a and 12b due to the occurrence of an earthquake or some other cause in the above building structure or frame, the different beam member 14 on the upper side is existing. It moves horizontally as indicated by the moving distance δ together with the beam 12a. The intermediate member 13 is transmitted as a horizontal force, that is, a shearing force, and the intermediate member 13 transmits the horizontal force to a different lower beam member 14. This horizontal force is transmitted to the existing beams 12a and 12b at the pin fulcrum by the pin members 14a and 14b fixedly disposed on the upper and lower different beam members 14 and 14, respectively. Further, as shown in FIG. 5, the beams 12a and 12b are fixed at the inflection points P1 and P2 of the displacement or predetermined positions, so that the horizontal force is attenuated. Further, the stress acting on the joint between the upper and lower ends of the intermediate member 13 and the upper and lower beams 14, 14, that is, the load bearing strength, is greatly attenuated, and a small force significantly attenuated acts on the attachment portion of the intermediate member 13. The intermediate member has a simple configuration and can be set to have a small load bearing capacity.
The existing beams 12a and 12b, for example, 10 (tf) to 50 (tf), are applied with a considerable excessive horizontal force, but perform a damping action to absorb excessive vibration energy.
In FIG. 5, H indicates the distance between the upper and lower beams 12a and 12b.

Action

According to the present invention, when a horizontal force is applied to the upper or lower beam on the building structure or the frame, the different upper beam member moves horizontally together with the existing beam. The intermediate member is transmitted as a horizontal force, that is, a shearing force, and the horizontal force is transmitted to another lower beam member by the intermediate member. This horizontal force is transmitted to an existing beam with a pin fulcrum by pin members fixedly arranged on different upper and lower beam members. Since the beams are fixedly arranged at the inflection point of the displacement or at different positions, the horizontal force is attenuated. Further, the stress acting on the joint between the upper and lower ends of the intermediate member and the upper and lower beams, that is, the load bearing strength, is greatly attenuated, and a small attenuated force acts on the attachment portion of the intermediate member. The structure is simple and the load bearing capacity can be set small.

Next, based on the embodiment in the earthquake-proof reinforcement structure for a building structure according to the present invention described above, the following specific example 1 will be described.
FIGS. 6 (a), (b) and FIGS. 7 (a), (b) show Example 1 of the earthquake-proof reinforcement structure for a building structure according to the present invention. For example, a steel stud is used as an intermediate member that is fixedly arranged in front of the columns 11 and 11 between the upper and lower portions of different beam members 14 and 14 fixedly arranged along the front portion of the beams 12a and 12b. This is an example of the case.
6 (a) is a side view showing the overall configuration, FIG. 6 (b) is a plan view in the direction of arrow CC in FIG. 6 (a), and FIG. 7 (a) is an arrow shown in FIG. 6 (a). FIG. 7B is an enlarged cross-sectional view of a portion E shown in FIG. 6B. The first embodiment according to the present invention will be clarified by description with reference to the accompanying drawings.

Reference numeral 16 denotes a steel stud as an intermediate member, which is made of, for example, an H-shaped steel material. An upper mounting portion 16a and a lower mounting portion 16b as connecting members are provided above and below the steel stud 16, and the steel stud 16 is connected to the upper side through the upper mounting portion 16a and the lower mounting portion 16b. It is fixed between the different beam member 14 and the lower different beam member 14.

As shown in FIG. 7A, the upper end of the steel stud 16 is joined to the lower end of the upper mounting portion 16a, and the joining plate 17 is fixed to the joining portion by welding 17a. Moreover, you may fix to this joining plate 17 with a fixing bolt or an anchor bolt. The left and right flanges 16c and 16d of the upper mounting portion 16a and the left and right flanges 16e and 16f of the steel stud 16 joined to the flanges 16c and 16d of the upper mounting portion 16a are joined plates 18a, 18b and 18c, respectively. , 18d, and fixed by a plurality or a plurality of anchor bolts 18e, 18f, respectively. The flanges 16c and 16e and the flanges 16d and 16f may be fixed to each other by, for example, fixing bolts or welding instead of the fixing means other than the anchor bolts.

As shown in FIG. 7B, the upper mounting portion 16a has a base plate 19 or a joining plate or a flange interposed therebetween to fix the welding or the like 19a to the upper different beam member 14 made of H-shaped steel or the like. The upper surface of the means or flange is fixed by tightening with a fixing bolt or an anchor bolt.

Although the lower end of the steel stud 16 is not shown in FIGS. 7A and 7B, it is the same component as the upper end of the steel stud 16 as shown in FIG. The lower mounting portion 16b and the like and the same connecting parts are fixed to a different lower beam member 14.
And although the above demonstrated the case where the steel stud 16 as an intermediate member was equipped with the upper and lower attachment parts 16a and 16b, the upper and lower attachment parts 16a and 16b were omitted, and the steel stud 16 was made into the above-mentioned It may be fixedly arranged directly on a different beam member 14.

Further, as shown in FIGS. 6 (a) and 6 (b), the steel studs 16 are arranged in the same number or the desired number as the pillars 11 and 11 immediately before the pillars 11 and 11, or as another example, immediately after the pillars 11 and 11, respectively. And the above-described different upper and lower beam members 14 and 14 are fixed to the existing upper and lower beams 12a and 12b as pin fulcrums by the pin members 14a and 14b, etc. The same structure and action as the embodiment of the seismic reinforcement structure of FIG.

8 (a) and 8 (b) show a second example of the seismic reinforcement structure for a building structure according to the present invention, for example, along the front part of the existing upper and lower beams 12a and 12b. In this embodiment, a steel brace is applied as an intermediate member that is fixedly arranged between the upper and lower portions of differently arranged beam members 14 and 14 and in front of the columns 11 and 11.
8A is a side view showing the overall configuration, and FIG. 8B is a plan view in the direction of the arrow GG in FIG. 8A. The second embodiment according to the present invention will be clarified by description based on the accompanying drawings.

Reference numeral 20 denotes a steel brace as an intermediate member. For example, as shown in FIG. 8A, an H-shaped steel plate is formed into a substantially X-shaped steel frame. The upper end 20a and the lower end 20b of the steel brace 20 are fixed between the different beam member 14 on the upper side and the different beam member 14 on the lower side.
The upper end 20a and the lower end 20b of the steel brace 20 are connected to the upper and lower sides by fixing means such as welding means, fixing bolts or anchor bolts, as in the second embodiment, with or without a joining plate. Are fixed to different beam members 14, 14.
Further, the upper end 20a and the lower end 20b of the steel brace 20 may form a flange (not shown), and the upper and lower beam members 14 and 14 may be fixed by the flange.
In addition, in the present Example 2, although the structure which abbreviate | omitted the upper attachment part and the lower attachment part is shown, the upper end part 20a and the lower end part 20b of this steel brace 20 and a different upper and lower beam member The structure which fixes the said steel brace 20 by interposing the said upper and lower attachment part between 14 and 14 is also employable.

Further, as shown in FIGS. 8 (a) and 8 (b), the steel brace 20 is fixed to the front of the pillars 11 and 11, or as another example, to the rear thereof, the same number or the desired number. The above-described different upper and lower beam members 14 and 14 are fixed to the existing upper and lower beams 12a and 12b as pin fulcrums by the pin members 14a and 14b, etc. The structure and operation are substantially the same as those of the embodiment in the seismic reinforcement structure, and the same reference numerals are given, and the description thereof is omitted.

FIGS. 9A and 9B show a third embodiment of the seismic reinforcement structure for a building structure according to the present invention, which is fixed along, for example, the front portions of the existing upper and lower beams 12a and 12b. It is the Example at the time of applying the inter-column with a viscoelastic damper as the intermediate member fixedly arrange | positioned in the part immediately before the said pillars 11 and 11 which is the different beam members 14 and 14 arrange | positioned.
9A is a side view showing the overall configuration, and FIG. 9B is a plan view in the direction of the arrow II in FIG. 9A. The third embodiment according to the present invention will be clarified by description based on the accompanying drawings.

Reference numeral 21 denotes an intermediate column with a viscoelastic damper as an intermediate member, and has a configuration in which a viscoelastic damper 22 is fixed to the intermediate column. An upper mounting portion 21a and a lower mounting portion 21b serving as connecting members are provided above and below the viscoelastic damper-equipped stud 21. The viscoelastic damper-equipped stud 21 includes the upper mounting portion 21a and the lower mounting portion 21b. The upper and lower different beam members 14 are fixed to the lower and lower different beam members 14.

As shown in FIG. 9A, the upper end and the lower end of the viscoelastic damper-equipped stud 21 are joined to the lower end portion of the upper mounting portion 21a and the upper end portion of the lower mounting portion 21b, and fixed bolts or anchor bolts to the joining plate 23. It fixes by fixing means, such as welding, or fixing means, such as welding. The left and right flanges of the upper and lower mounting portions 21a, 21b and the left and right flanges of the viscoelastic damper-equipped stud 21 are sandwiched by the joining plates 21c, 21d, 21e, 21f as in the first embodiment, and a plurality of flanges are provided. It is fixed with one or many anchor bolts or fixing bolts. Further, the joining plates 21c, 21d, 21e, and 21f may be fixed by welding means.

Further, the upper and lower ends of the upper mounting portion 21a are anchor bolts or fixing bolts to the upper and lower different beam members 14, 14 made of H-shaped steel or the like with a base plate 24, a joining plate or a flange interposed therebetween. Tighten and fix with fixing means such as.
Note that the base plate 24 or the flange and the upper mounting portion 21a and the lower mounting portion 21b may be welded and fixed without using an anchor bolt or a fixing bolt.

Although the above description has been given of the case where the upper and lower mounting portions 21a and 21b are provided as the intermediate member on the intermediate column 21 with the viscoelastic damper, the upper and lower mounting portions 21a and 21b are omitted, and the intermediate column with the viscoelastic damper is omitted. It is possible to adopt a configuration in which 21 is directly fixed to the different upper and lower beam members 14, 14.

Further, as shown in FIGS. 9 (a) and 9 (b), the inter-columns 21 with viscoelastic dampers are the same number or the desired number of the columns 11, 11 in the immediately preceding portion of the columns 11, 11, or in another example immediately after that. Regarding the fixed arrangement and that the upper and lower beam members 14 and 14 are fixed to the existing upper and lower beams 12a and 12b as pin fulcrums by the pin members 14a and 14b, etc., the building structure according to the present invention described above The same structure and action as those of the embodiment of the seismic reinforcement structure of FIG.

It is a perspective view which shows embodiment in the earthquake-proof reinforcement structure of the building structure which concerns on this invention. 1 shows a connection portion between an existing beam and a different beam member applied to an embodiment in a seismic reinforcement structure for a building structure according to the present invention, and is a direction of line BB in FIG. FIG. It is a figure which shows the connection part of the existing beam applied to embodiment in the earthquake-proof reinforcement structure of the building structure which concerns on this invention, and a different beam member, Comprising: It is a figure which shows the modification of FIG. . It is a principal part expanded sectional view which shows the other example which vertically provided the column between newly installed beams applied to embodiment in the earthquake-proof reinforcement structure of the building structure which concerns on this invention, for example. Explanatory drawing which shows the effect | action which attenuate | damps when horizontal force is added to the upper and lower beams when an earthquake etc. are induced to this building structure about embodiment in the earthquake-proof reinforcement structure of the building structure concerning this invention It is. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing which shows specific Example 1 in the earthquake-proof reinforcement structure of the building structure which concerns on this invention, Comprising: (a) is a side view, (b) is the CC line direction of the arrow of (a). FIG. It is drawing which shows concrete Example 2 in the earthquake-proof reinforcement structure of the building structure which concerns on this invention, Comprising: (a) is an enlarged side view of the D section of the said FIG. 5 (a), (b) is the said It is a top view of the arrow EE line direction of Fig.5 (a). It is drawing which shows concrete Example 2 in the earthquake-proof reinforcement structure of the building structure which concerns on this invention, Comprising: (a) is a side view, (b) is the arrow GG line direction of (a). It is a top view. It is drawing which shows concrete Example 3 in the earthquake-proof reinforcement structure of the building structure which concerns on this invention, Comprising: (a) is a side view, (b) is the arrow I-I line direction of (a). It is a top view. It is a side surface schematic diagram which shows the structure of an example of the earthquake-resistant structure in a prior art. It is drawing which shows the structure of the detail of FIG. 10 which shows the structure of an example of the earthquake-resistant structure in a prior art, It is the enlarged view. It is drawing which shows the structure of the detail of FIG. 10 which shows a structure of an example of the earthquake-resistant structure in a prior art, Comprising: It is sectional drawing of the arrow AA direction of FIG.

Explanation of symbols

1 Column 2 Beam 3 Column / beam joint 4 Viscoelastic damper 4a Outer steel plate 4b Inner steel plate 4c Fixing bolt 4d Viscoelastic body 5 Damping column 6a Upper flange 6b Lower flange 6c Upper flange weld 6d Lower flange weld 6e Fixing bolt 6f Fixing bolt 7a Upper end joining plate 7b Lower end joining plate 8a Upper end fixing bolt 8b Lower end fixing bolt 9 Cane 10a, 10b Fixing bolt with plate 11 Column 12a Beam 12b Beam 12c Through-hole 13 Intermediate member 14 Different beam member 14A Column 14B Column 14a Pin member 14b Pin member 14c Pin member shaft portion 14d Filling adhesive 14e Main body center plate portion 14f Double plate 14g Double plate 14h Weld portion 14i Weld portion 14j Steel plate members 15a, 15b Nut 15c Pin member one end washer 15d Pin The other end washer 15e of the member Rate 15f Seat 15g Base mortar 15h Reinforced concrete base plate 15i Nut 15j Nut 16 Steel stud (intermediate member)
16a Upper mounting part 16b Lower mounting part 16c Left flange 16d of upper mounting part Right flange 16e of upper mounting part 16e Left flange of steel stud 16f Right flange of steel stud
17 Joining plate 17a Welding 18a, 18b Joining plate 18c, 18d Joining plate 18e, 18f Anchor bolt 19 Base plate 19a Welding 20 Steel brace (intermediate member)
20a Upper end portion 20b of steel brace Lower end portion 21 of steel brace 21 Column 21 with viscoelastic damper Upper mounting portion 21b of the column with viscoelastic damper Lower mounting portion 21c-21f of the column with viscoelastic damper Joint plate 22 Viscoelastic damper 23 Joint plate 24 Base plate F Horizontal force H Distance between upper and lower beams δ Beam travel distance P1, P2 Inflection point of beam displacement

Claims (11)

In a building structure composed of a joined body of columns and beams, different beam members that are fixed by fixing means at the front or rear of the upper and lower beams, and on the different beam members A seismic reinforcement structure for a building structure, comprising a desired number of intermediate members fixed between the lower and upper portions. In a building structure composed of a joined body of columns and beams, different beam members which are fixed to the inflection points of the displacement at the front or rear of the upper and lower beams by fixing means, A seismic reinforcement structure for a building structure, comprising a desired number of intermediate members fixed between upper and lower beams. In a building structure composed of a joined body of columns and beams, different beam members which are fixed to the inflection points of the displacement at the front or rear of the upper and lower beams by fixing means, An anti-seismic reinforcing structure for a building structure, comprising a desired number of intermediate members fixed above and below the different beam members and immediately before or after the pillar. In a building structure composed of a joined body of columns and beams, different beam members which are fixed to the inflection points of the displacement at the front or rear of the upper and lower beams by fixing means, A seismic reinforcement structure for a building structure, comprising a desired number of intermediate members fixed between upper and lower beam members via an upper mounting portion and a lower mounting portion. In a building structure composed of a column and beam assembly, a spacer is interposed at the inflection point of the displacement at the front or rear of the upper and lower beams and at a substantially intermediate position between the columns. And a different beam member fixed by a nut and a pin member, and an intermediate member fixed by a desired number of portions on the upper and lower sides of the different beam member and immediately before or after the column. Seismic reinforcement structure for building structures. In a building structure composed of a joined body of pillars and beams, an adjustment plate for entering and exiting the inflection point of the displacement existing at the front or rear part of the upper and lower beams and at a substantially intermediate position between the pillars A different beam member fixed by a nut and a pin member with an intermediate member interposed therebetween, and an intermediate member fixed between the upper and lower sides of the different beam member and a front portion or a rear portion of the column by a desired number. Seismic reinforcement structure for building structures. 7. The earthquake-proof reinforcement structure for a building structure according to claim 5, wherein the intermediate member is fixed between upper and lower parts of the different beam members via an upper mounting portion and a lower mounting portion. 7. The earthquake-proof reinforcement structure for a building structure according to claim 5, wherein the pin member is formed by injecting a filling adhesive into a shaft portion. 7. The different beam member is an H-shaped steel beam member, a steel beam member, a steel reinforced concrete beam member, or a precast beam member. Seismic reinforcement structure for building structures. The building according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the intermediate member is made of a steel damper, a viscoelastic damper, an oil damper, a friction damper, a steel brace, or a stud-type seismic member. Seismic reinforcement structure for structures. In a building structure constituted by a joined body of columns and beams, different beam members which are fixed to the inflection points of the displacement at the front or rear of the upper and lower beams by the fixing means, It is provided with a pillar vertically provided between the upper and lower beams and an intermediate member fixed at a desired number between the upper and lower beams of the different beam members, which are left and right outer ends of the building structure. Seismic reinforcement structure for building structures.

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