JP2005171569A - Earthquake resisting panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earthquake resisting panel capable of finishing earthquake resistant reinforcing work from steel frame work to positioning of pile with sufficient strength and being completed within a short period of time in comparison with before. <P>SOLUTION: The earthquake resisting panel equipped with a steel framed frame installed so as to parallel with a skeleton frame of the existing structure and the steel framed brace constructed in the steel framed frame comprises corner brackets arranged to corner sections of the steel framed frame and center brackets arranged to the central parts of beam members corresponding to the corner sections, and it is so constituted that an alignment face with the steel frame brace is formed in the shape of a circular-arc, at the same time, both end sides of the steel frame brace are also opposed to the corner brackets or the center brackets and are formed in the shape of circular-arc and that the steel frame brace of a square cylindrical steel material is constructed between each of the corner brackets and each of the center brackets. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a seismic panel used for seismic reinforcement of an existing structure of a reinforced concrete structure or a steel reinforced concrete structure.

Due to the need to improve the earthquake resistance of existing structures such as buildings, today, especially for many existing reinforced concrete structures and steel reinforced concrete structures that are ineligible for the current standards, (See, for example, Patent Document 1). On the other hand, for the seismic reinforcement of such structures, a construction method in which braces (reinforcing members) are newly added in the frame of an existing structure such as an RC structure has been widely used. In this method of adding braces, after seismic diagnosis of existing structures, the shape, size, and strength of the braces are thoroughly examined, and the design drawings required for reinforcement work are created, and the necessary steel materials and assembly parts Prepared based on the blueprints.
JP 2001-090352 A

  However, conventional seismic reinforcement work based on blueprints, etc., in addition to work such as seismic diagnosis and calculation of seismic strength before starting construction, is a great deal of work for creating blueprints for seismic retrofitting work and processing steel frames at factories. Spends a lot of time. For example, if you are going to do seismic reinforcement work on an existing structure with many windows, such as a school building or a gymnasium, during the summer vacation period of the school, there is a time restriction that you must complete the construction within about 20 days. there were. With the conventional seismic reinforcement methods, not only is it difficult to quickly implement seismic reinforcement work corresponding to the current state of the facility, but it is also difficult to perform sufficient seismic reinforcement work on all the frame frames. there were.

  The present invention solves such a conventional problem, and finishes the seismic reinforcement work from steel processing to construction to a sufficient strength, and can be completed in a shorter period of time than before, after completion of the work. In addition, it is intended to provide a seismic panel that can secure a lighting rate that does not affect the general work or work in the structure.

  An earthquake-resistant panel according to the invention of claim 1 is an earthquake-resistant panel comprising a steel frame that is installed along a frame of an existing structure, and a steel brace that is installed in the steel frame. While forming the joint surface of the corner bracket disposed at either the upper or lower corner portion and the steel brace of the center bracket disposed at the center of the beam member on the side facing these corner portions in an arc shape, The both ends of the steel brace are also formed in an arc shape so as to face the corner bracket or the center bracket, and the steel brace and the corner bracket or the center bracket are melted and welded to each other in an arcuate surface facing each other. A steel brace made of a square tube steel material is installed between the corner bracket and the center bracket, and a K-type together with the beam member And characterized in that it constitutes a race.

  According to claim 1, both end surfaces of the steel brace and the joint surface of the corner bracket or the center bracket facing the both are formed in a gentle arc shape, so that they are in close contact with each other, The joint positioning of the steel brace with respect to the corner bracket or the center bracket can be performed accurately. Further, since the arc-shaped surfaces are in contact with each other, adjustment or setting in a substantially close state can be performed without causing a large gap in the joint. Therefore, the contact position can be finely adjusted and welding can be easily performed.

  Further, the force can be dispersed by receiving the tension of each steel brace by the arcuate bent surface of each bracket. Thereby, it is possible to improve the earthquake resistance at the contact position between the corner bracket and the center bracket at the end of each steel brace.

  Furthermore, the steel frame in which the steel brace made of the square tube steel material is installed and integrated is installed inside and outside the frame of the existing structure to reinforce the frame and enhance the earthquake resistance. Furthermore, since the steel brace is a rectangular tube type, a buckling prevention reinforcing material necessary for a conventional steel brace using H-shaped steel or the like is installed between the steel brace and the steel frame corner. This eliminates the need for man-hours such as welding work for the reinforcing material. Furthermore, the K-type brace reinforces the entire steel frame, in particular, increases the support strength of the beam member, and thus can stably hold and reinforce the frame of the existing structure.

  An earthquake-resistant panel according to the invention of claim 2 is an earthquake-resistant panel comprising a steel frame that is installed along a frame of an existing structure, and a steel brace that is installed in the steel frame. While forming the joint surface of the corner bracket disposed at either the upper or lower corner portion and the steel brace of the center bracket disposed at the center of the beam member on the side facing these corner portions in an arc shape, Both ends of the steel brace are also formed in an arcuate shape so as to face the corner bracket or the center bracket, and the steel brace and the corner bracket or the center bracket are melted and welded with the arcuate surfaces facing each other. A pair of connecting steel plates are welded to the joint, and are formed of a square tube steel material between the corner bracket and the center bracket. Bridged bone brace, characterized in that it constitutes a K-type bracing with the beam member.

  According to claim 2, in addition to claim 1, the end of each steel brace is applied to the joint between the corner bracket and the center bracket with a pair of connecting steel plates, and the steel brace is easily fixed by welding. Therefore, the bonding strength is further increased.

  Further, since the pair of connecting steel plates are fixed to the steel brace and the corner bracket or the center bracket by fusion welding, the corner bracket or the center bracket can be used even if a long rectangular steel tube is used as the steel brace. The steel frame can be further reinforced through the.

  A seismic panel according to the invention of claim 3 is a seismic panel comprising a steel frame installed along a frame of an existing structure and a steel brace installed in the steel frame, wherein the steel frame And forming a joint surface between the corner brackets disposed at one of the upper and lower corners of the steel plate and the steel brace of the center bracket disposed at the center of the beam member on the side opposite to the corners. The both ends of the steel brace are also formed in an arc shape so as to oppose the corner bracket or the center bracket, and the steel brace and the corner bracket or the center bracket are brought into contact with each other on an arcuate surface facing each other. In addition, a connecting steel plate with pins having pin shafts on both ends of the steel brace is disposed at the joint, and the pin shaft of the connecting steel plate is connected to the corner bra A steel brace made of a square tube type steel material is installed between the corner bracket and the center bracket, and a K-type brace is formed together with the beam member. And

  According to the third aspect, since the pair of connecting steel plates with pins having pin shafts are mounted on both ends of the steel brace, these connecting steel plates can be rotated to the pins provided on the center bracket and the corner bracket. Is pivotally supported. Thereby, the contact position of the corner bracket and the center bracket can be finely adjusted at the end of each steel brace. By fixing the steel brace with the pinned connecting steel plate, the appearance of the steel bracket brace length and the corner bracket and center bracket and the field mounting appearance are improved.

  In addition, since both ends of the steel brace are joined to the corner bracket or the center bracket by an arc surface, the joining position of the steel brace to the corner bracket or the center bracket can be made without causing a large gap between them. The entire steel brace can be rotatably supported with respect to the arc surface of each center bracket under substantially close conditions.

  A seismic panel according to the invention of claim 4 is a seismic panel comprising a steel frame installed along a frame of an existing structure, and a steel brace installed in the steel frame. While forming the joint surface of the corner bracket disposed at either the upper or lower corner portion and the steel brace of the center bracket disposed at the center of the beam member on the side facing these corner portions in an arc shape, Both ends of the steel brace are also formed in an arc shape opposite to the corner bracket or the center bracket, and the arcuate surfaces of the opposite ends of the steel brace and the corner bracket or the center bracket are opposed to each other. Attach the cruciform joint, butts the cruciform joints together, and tightens them with bolts via an attachment plate to It bridged the steel brace consisting of prismatic steel during printer bracket, characterized in that it constitutes a K-type bracing with the beam member.

  According to claim 4, in addition to claim 1, cross joints are attached to both ends of each steel brace. Therefore, the cross joints are attached to the corner bracket and the center bracket. Can be easily connected at a predetermined position, and the arrangement and joining of each steel brace can be easily fixed.

  Still further, the steel brace can be arbitrarily extended to reach the corner bracket and the center bracket by bolting the steel brace to the corner bracket or the center bracket. Moreover, since the steel brace has been disassembled, it can be assembled at the construction site.

  A cross joint that enables connection to the steel brace is arranged on the arcuate side of the center bracket. In addition to the first aspect, in addition to the cross joint, the steel brace is connected to a corner bracket, Fine adjustments can be made to the connection of the center bracket, and the required brace length can be secured while obtaining sufficient buckling resistance.

  The seismic panel of the present invention is a seismic reinforcement of an existing structure by attaching a panel composed of a steel frame suitable for the frame and a rectangular tube brace installed in the frame to the frame of the existing structure. There is an advantage that the construction work can be carried out without preparing a detailed design drawing.

  The earthquake-resistant panel according to the present invention includes a corner bracket disposed at any one of the two upper and lower corner portions of the steel frame, and a center bracket disposed at a beam member central portion on the side facing these corner brackets. Since the joining surface is formed in a gentle arc shape, joining in a substantially close state can be adjusted or set. As a result, the end of each steel brace can be finely adjusted in the contact position between the corner bracket and the center bracket, and can be easily joined.

  Furthermore, not only is it easy to attach the steel brace, but also fine adjustments can be made in the field at the time of installation. For this reason, it is possible to perform seismic reinforcement work for existing structures without preparing detailed design drawings in advance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 6 are diagrams for explaining the first embodiment. 7 to 12 are diagrams for explaining the second embodiment. 13 to 18 are diagrams for explaining the third embodiment. FIGS. 13 to 18 are diagrams for explaining the fourth embodiment.

(First embodiment)
1 is a front view of an earthquake-resistant panel showing a first embodiment according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, FIG. 3 is a sectional view taken along line BB in FIG. 1 is a cross-sectional view taken along the line CC of FIG. 1, FIG. 5 is a cross-sectional view of the main part showing the mounting structure of the steel brace shown in FIG. 1, and FIG.

As shown in FIG. 1, the seismic panel shown in the first embodiment supports a rectangular steel frame 1, steel braces 2 and 2 attached to the steel frame 1, and the steel braces 2 and 2. Consists of corner brackets 8 and 9 and a center bracket 10. The steel frame 1 has a structure in which the left and right column members 4 and 5 and the upper and lower beam members 6 and 7 to be mounted on the frame body to be constructed are connected to a substantially rectangular frame, and both left and right ends are fixed by means of fusion welding or the like. It is connected.
The center bracket 10 is provided at the center of the corner brackets 8 and 9 disposed at any one of the upper and lower beam members of the steel frame 1 and the upper and lower beam members 6 and 7 facing the brackets 8 and 9. Is disposed. In this embodiment, the left and right column members 4 and 5 and the upper and lower beam members 6 and 7 have a plurality of studs 11 attached to a substantially h-shaped H-shaped steel material at substantially equal intervals.

As shown in FIGS. 1 and 2, the upper beam member 6 is composed of members 6 a and 6 b that are divided into left and right parts, which are connected in the horizontal direction with the center bracket 10 interposed therebetween.
The center bracket 10 is composed of a large, substantially U-shaped steel material 12 in which the members 6a and 6b are connected to the outer surface by welding and two corresponding gently convex arcuate surfaces P and P are formed. The upper part of the substantially U-shaped steel material 12 is composed of an H-shaped steel material having an h-shape like the members 6a and 6b. The center bracket 10 is also planted with studs 11 similar to those provided on the H-shaped steel material.

  As shown in FIGS. 1 and 3, each corner bracket 8, 9 is substantially L-shaped with outer surfaces welded to both ends of the lower beam member 7 and the lower ends of the column members 4, 5. It consists of mold steel materials 13 and 13. The L-shaped steel materials 13 and 13 are welded in a state where gentle convex arcuate surfaces G and G are formed, respectively. Here, the convex arcuate surfaces G and G of the corner brackets 8 and 9 and the convex arcuate surfaces P and P of the center bracket 10 are arranged to face each other and form substantially the same curvature surface by facing each other. Yes. Further, the concave arcuate surfaces R, R, R, and R of the steel braces 2 and 2 also have corresponding curvatures. For this reason, the joining position of the steel brace 2 with respect to the corner brackets 8 and 9 or the center bracket 10 can be brought into contact with each other without causing a large gap therebetween. As a result, the steel braces 2 and 2 can be easily adjusted or set. The corner brackets 8 and 9 are also planted with studs 11 similar to those provided on the H-shaped steel material.

  In the steel frame 1 having such a configuration, the structural members for the column members 4 and 5 and the beam members 6 and 7 that match the size and shape of the frame of the existing structure that requires reinforcement are selected and welded or the like. They are connected by fixing means and assembled into a predetermined size and shape as a whole.

  Next, as shown in FIGS. 1 and 5, the steel braces 2, 2 and the brackets 8, 9 are joined at both ends to the concave shape corresponding to the arc-shaped side surfaces of the brackets 8, 9, 10. A curved surface R is formed. The opposing arc-shaped side faces R and G on both end sides are butted together and fixed by penetration welding 14. Since the welds 14 have the same curved surface ratio, they are slid and finely adjusted according to the angle between the center bracket 10 and the corner brackets 8 and 9 in a substantially intimate state. The arcuate curved surface and the curved surface of each side steel brace 2 are brought into contact with each other and joined by melt welding. For this reason, since it can be easily fine-tuned at the construction site, construction work can be performed without a detailed design drawing.

Therefore, the steel brace 2 can arbitrarily adjust the coupling angle with respect to the beam members 6 and 7. As a result, the steel braces 2 and 2 can be brought into contact with the L-shaped steel materials 13 and 13 of the corner brackets 8 and 9 and fixed by penetration welding at a joint angle at which optimum brace rigidity is obtained. In addition, it is possible to maximize the strength of the construction surface by joining the curved surfaces. In particular, the lower end surface of the rectangular tube-shaped steel material forms a concave arc surface R that can come into contact with the gentle convex arc-shaped surface G of the brackets 8 and 9 with substantially the same curved surface ratio, and the arcs of the L-shaped steel materials 13 and 13 are formed. The position is adjusted in close contact with the surface G, and welding is performed at an appropriate position.
As described above, the present embodiment is configured with the steel braces 2 and 2 centering on a square tubular steel material having extremely high buckling resistance, and the length adjustment and the inclination adjustment in the joining can be performed in the factory construction. good.

  In order to use the seismic panel of the present invention for seismic reinforcement, first, a steel frame 1 suitable for a frame of an existing structure is prepared. In the steel frame 1, the center bracket 10 and the corner brackets 8 and 9 are attached to the column members 4 and 5 and the beam member 6 as described above. The center bracket 10 and the corner brackets 8 and 9 are used to attach steel braces 2 and 2 having an arbitrary length corresponding to the size of the steel frame 1 with optimum strength.

  In the first embodiment, since the arcuate convex curved surfaces P, P of the center bracket 10 can be adjusted in inclination together with the concave curved surfaces R, R, R, R of the steel brace 2, the beam member Corresponding to the angle of 6, the other ends of the steel braces 2, 2 can be welded to the corner brackets 8, 9 with an optimum length and inclination in terms of strength.

  In addition, in the seismic reinforcement using the seismic panel of the first embodiment, after the construction contract with the existing design drawing, the steel frame of the seismic panel is manufactured in advance, so that only the installation of the steel brace whose length is adjustable is possible. Can achieve short-term delivery. With respect to conventional steel braces, most of the designs are centered on H-shaped steel materials. In this case, a buckling prevention member for the steel braces is required separately.

  Adopting a steel brace as a steel brace as in the first embodiment can ensure sufficient buckling resistance without preparing a separate buckling prevention member. Further, when the steel brace is a K-type brace, only a part of the panel surface is blocked, so that the lighting rate is not deteriorated and the appearance is not greatly impaired.

As described above, according to the first embodiment, the steel frame 1 installed along the frame of the existing structure, and the steel frame cases 2 and 2 made of the rectangular tube-type steel material installed in the steel frame 1. Therefore, the earthquake-resistant panel can be easily and quickly delivered to an existing structure without preparing a detailed design drawing or performing the construction according to the design drawing. Moreover, the constructed earthquake-resistant panel is only blocked by a part of the opening, so that the necessary lighting rate can be sufficiently secured. In addition, there is an advantage that it is possible to minimize deterioration of the appearance after construction.
In addition, in this embodiment, the attachment example with the frame can be applied not only to the conventional K-bracing method with a frame, which is a conventional construction method, but also to an external bracing method.

(Second embodiment)
7 is a front view of a seismic panel according to a second embodiment of the present invention, FIG. 8 is a cross-sectional view taken along line EE in FIG. 7, FIG. 9 is a cross-sectional view taken along line FF in FIG. 7 is a cross-sectional view taken along the line GG of FIG. 7, FIG. 11 is a cross-sectional view of the main part showing the mounting structure of the steel brace shown in FIG. 7, and FIG. 12 is a cross-sectional view taken along the line H-H of FIG.
In the earthquake-resistant panel according to the second embodiment, the steel braces 2 and 2 are connected to the center bracket 10 and the corner brackets 8 and 9 together with the welded welds of the connecting portions together with a pair of connecting steel plates. The steel braces 2 and 2 are connected to the center bracket 10 and the corner brackets 8 and 9. Details of this embodiment are as shown in FIGS. In each figure, the same part as FIG. 1 to FIG. This second embodiment is effective when a large steel brace is used because the existing equipment is large.

As shown in FIG. 7, the seismic panel of the present invention includes a rectangular steel frame 1, steel braces 2 and 2 attached to the steel frame 1, and corner brackets 8 that support the steel braces 2 and 2. 9 and a center bracket 10 and a connecting steel plate 18 with pins. The steel frame 1 has a structure in which left and right column members 4 and 5 and upper and lower beam members 6 and 7 to be mounted on a frame to be constructed are connected to a substantially rectangular frame, and both left and right ends are connected by fixing means such as welding. Has been.
The center bracket 10 is provided at the center of the corner brackets 8 and 9 disposed at any one of the upper and lower beam members of the steel frame 1 and the upper and lower beam members 6 and 7 facing the brackets 8 and 9. Is disposed. In this embodiment, the left and right column members 4 and 5 and the upper and lower beam members 6 and 7 are made of a square tube steel material, and a covering steel plate 16 is mounted on the outer periphery.

As shown in FIGS. 7 and 8, the upper beam member 6 is composed of members 6 a and 6 b that are divided into left and right, and these are connected in a horizontal direction with the center bracket 10 interposed therebetween.
The center bracket 10 is composed of a large, substantially U-shaped steel material 12 in which the respective members 6a and 6b are connected to each other on the outer surface and two corresponding gentle convex arcuate surfaces P and P are formed. The upper part of the substantially U-shaped steel material 12 is composed of a square tube steel material, similar to the members 6a and 6b, and a covering steel material 16 is mounted on the outer periphery.

  As shown in FIGS. 1 and 3, the corner brackets 8 and 9 are substantially L-shaped whose outer surfaces are welded to both ends of the lower beam member 7 and the lower ends of the column members 4 and 5, respectively. It consists of steel materials 13 and 13. The L-shaped steel materials 13 and 13 are respectively welded in a state of forming gentle convex arcuate surfaces G and G, respectively. Here, the convex arcuate surfaces G and G of the corner brackets 8 and 9 and the convex arcuate surfaces P and P of the center bracket 10 are disposed opposite to each other and form substantially the same curvature surface. . The concave arcuate surfaces R, R, R, R of the steel braces 2, 2 also have corresponding curvatures. For this reason, the joining position of the steel brace 2 with respect to the corner brackets 8 and 9 or the center bracket 10 can be brought into contact with each other without causing a large gap therebetween. As a result, the steel braces 2 and 2 can be easily adjusted or set.

  In the steel frame 1 having such a configuration, the structural members for the column members 4 and 5 and the beam members 6 and 7 that match the size and shape of the frame of the existing structure that requires reinforcement are selected and welded or the like. They are connected by fixing means and assembled into a predetermined size and shape as a whole.

  Next, as shown in FIGS. 7 and 12, the steel braces 2 and 2 and the brackets 8, 9, and 10 are made of a square tube steel material, and the arcuate shapes of the brackets 8, 9, and 10 are formed on both ends. A concave curved surface R corresponding to each side surface is formed. The opposing arc-shaped side faces R and G on both end sides are butted and welded together, and a pair of connecting steel plates 16 are brought into contact with each other and fixed by welding. The steel braces 2, 2 are connected to the center bracket 10 and the corner brackets 8, 9 by a pair of connecting steel plates being welded and welded to each connecting portion, and the steel braces 2, 2 are connected to the center bracket 10. And are connected to the corner brackets 8 and 9. The welding of the connecting steel plate 17 is finely adjusted according to the angle between the center bracket 10 and the corner brackets 8, 9, and the arcuate curved surface of each bracket 8, 9, 10 and the curved surface of each side steel brace 2. Are welded together. For this reason, since it can be finely adjusted at the construction site, construction work can be performed without a detailed design drawing. This second embodiment is effective when it is applied to the seismic construction of a frame of an existing structure larger than the first embodiment, or when the steel brace requires further strength.

Therefore, the steel brace 2 can arbitrarily adjust the coupling angle with respect to the beam members 6 and 7. As a result, the lower end of the steel brace 2 can be brought into contact with the L-shaped steel members 13 and 13 of the corner brackets 8 and 9 and welded and fixed at a coupling angle that provides optimum brace rigidity. In the case of a curved surface, it is possible to maximize the strength of the construction surface. In particular, the lower end surface of the rectangular tube-shaped member forms an arc surface R that can come into contact with the gentle arc-shaped surface G of the brackets 8 and 9 with substantially the same power factor, and the arc-shaped surface G of the L-shaped steel materials 13 and 13 is formed on the arc-shaped surface G. On the other hand, the position is adjusted in close contact, and welding is performed at an appropriate position.
As described above, the second embodiment is configured with the steel braces 2 and 2 centering on a square tubular steel material having extremely high buckling resistance, and the length adjustment and the inclination adjustment in the joining can be easily performed in the field construction. It is characterized in that it is performed by welding work.

  In order to use the seismic panel according to the second embodiment for seismic reinforcement, first, a steel frame 1 suitable for a frame of an existing structure is prepared. In the steel frame 1, the center bracket 10 and the corner brackets 8 and 9 are attached to the column members 4 and 5 and the beam member 6 as described above. The center bracket 10 and the corner brackets 8 and 9 are used to attach steel braces 2 and 2 having an arbitrary length corresponding to the size of the steel frame 1 with optimum strength.

  In the second embodiment, since the inclination of the arcuate convex curved surface P of the center bracket 10 and the concave curved surface R of the steel brace 2 can be adjusted, the strength corresponding to the angle of the beam member 6 can be adjusted. Therefore, the other ends of the steel braces 2 and 2 can be welded to the corner brackets 8 and 9 with an optimal length and inclination.

  In addition, in the seismic reinforcement using the seismic panel of the second embodiment, after the construction contract with the existing design drawing, the steel frame of the seismic panel is manufactured in advance, so that the length adjustable steel brace can only be attached. Can achieve short-term delivery. With respect to conventional steel braces, most of the designs are centered on H-shaped steel materials. In this case, a buckling prevention member for the steel braces is required separately.

  Adopting a square tube brace as the steel brace as in the second embodiment makes it possible to ensure sufficient buckling resistance without preparing a separate buckling prevention member. Further, when the steel brace is a K-type brace, only a part of the panel surface is blocked, so that the lighting rate is not deteriorated and the appearance is not greatly impaired.

As described above, in the second embodiment, the steel frame 1 installed along the frame of the existing structure, and the steel brace 2 comma 2 made of a rectangular tube steel material installed in the steel frame 1 are provided. Therefore, the earthquake-resistant panel can be easily and quickly delivered to an existing structure without preparing a detailed design drawing or performing the construction according to the design drawing. Moreover, the constructed earthquake-resistant panel is only blocked by a part of the opening, so that the necessary lighting rate can be sufficiently secured. In addition, there is an advantage that it is possible to minimize deterioration of the appearance after construction.
In addition, in this embodiment, the attachment example with the frame can be applied not only to the conventional K-bracing method with a frame, which is a conventional construction method, but also to an external bracing method.

(Third embodiment)
13 is a front view of a seismic panel according to a third embodiment of the present invention, FIG. 14 is a cross-sectional view taken along the line II of FIG. 13, FIG. 15 is a cross-sectional view taken along the line JJ of FIG. 13 is a cross-sectional view taken along the line KK, FIG. 17 is a cross-sectional view of the main part showing the steel brace mounting structure shown in FIG. 13, and FIG. 18 is a cross-sectional view taken along the line LL of FIG.
In the earthquake-resistant panel according to the third embodiment, the steel braces 2 and 2 are connected to the center bracket 10 and the corner brackets 8 and 9 by arranging a pair of connecting steel plates with pins at each connecting portion. The braces 2 and 2 are connected to the center bracket 10 and the corner brackets 8 and 9. Details of this embodiment are as shown in FIGS. In each figure, the same part as FIG. 1 to FIG.

As shown in FIG. 13, the earthquake-resistant panel according to the third embodiment supports a rectangular steel frame 1, steel braces 2 and 2 attached to the steel frame 1, and the steel braces 2 and 2. The corner brackets 8 and 9, the center bracket 10, and the connecting steel plate 18 with pins are configured. The steel frame 1 has a structure in which left and right column members 4 and 5 and upper and lower beam members 6 and 7 to be mounted on a frame to be constructed are connected to a substantially rectangular frame, and both left and right ends are connected by fixing means such as welding. Has been.
The center bracket 10 is provided at the center of the corner brackets 8 and 9 disposed at any one of the upper and lower beam members of the steel frame 1 and the upper and lower beam members 6 and 7 facing the brackets 8 and 9. Is disposed. In this embodiment, the left and right column members 4 and 5 and the upper and lower beam members 6 and 7 have a plurality of studs 11 attached to a substantially h-shaped H-shaped steel material at substantially equal intervals.

As shown in FIGS. 13 and 14, the upper beam member 6 is composed of members 6 a and 6 b that are divided into left and right parts, which are connected in a horizontal direction with the center bracket 10 interposed therebetween.
The center bracket 10 is composed of a large, generally U-shaped steel material 12 in which the respective members 6a and 6b are connected to the outer surface and two corresponding gentle convex arcuate surfaces P and P are formed. The upper part of the substantially U-shaped steel material 12 is composed of an H-shaped steel material having an h-shape like the members 6a and 6b. The center bracket 10 is also planted with studs 11 similar to those provided on the H-shaped steel material.

  As shown in FIGS. 1 and 3, the corner brackets 8 and 9 are substantially L-shaped steel members 13 whose outer surfaces are welded to both ends of the lower beam member 7 and lower ends of the column members 4 and 5. , 13. The L-shaped steel materials 13 and 13 are respectively welded in a state of forming gentle convex arcuate surfaces G and G, respectively. The convex arcuate surfaces G and G of the corner brackets 8 and 9 and the convex arcuate surfaces P and P of the center bracket 10 are arranged opposite to each other and form substantially the same curvature surface. . Further, the concave arcuate surfaces R, R, R, and R of the steel braces 2 and 2 also have corresponding curvatures. For this reason, the joining position of the steel brace 2 with respect to the corner brackets 8 and 9 or the center bracket 10 can be brought into contact with each other without causing a large gap therebetween. As a result, the steel braces 2 and 2 can be easily adjusted or set. The corner brackets 8 and 9 are also planted with studs 11 similar to those provided on the H-shaped steel material.

  In the steel frame 1 having such a configuration, the structural members for the column members 4 and 5 and the beam members 6 and 7 that match the size and shape of the frame of the existing structure that requires reinforcement are selected and welded or the like. They are connected by fixing means and assembled into a predetermined size and shape as a whole.

  Next, as shown in FIGS. 13 and 18, the steel braces 2, 2 and the brackets 8, 9 are joined to the concave curved surfaces R corresponding to the arc-shaped side surfaces of the brackets 8, 9 on both ends. , R, R, R are formed. These both face each other in the arc-shaped side faces R and G facing each other, abut the pinned connecting steel plate 18 and fix them with the pins 19. The pinned connecting steel plate 18 is finely adjusted according to the angle between the center bracket 10 and the corner brackets 8, 9, and the arcuate convex curved surface of each bracket 8, 9, 10 and the side steel brace 2 The concave curved surfaces are butted together and joined with a connecting steel plate with pins. For this reason, since it can be finely adjusted at the construction site, construction work can be performed without a detailed design drawing.

Therefore, the steel brace 2 can arbitrarily adjust the coupling angle with respect to the beam members 6 and 7. As a result, the lower ends of the steel braces 2 and 2 can be fixed in a state where the lower ends of the steel braces 2 and 2 are joined to the L-shaped steel materials 13 and 13 of the corner brackets 8 and 9 at a coupling angle at which optimum brace rigidity is obtained. In addition, since the curved surface is joined, the strength of the construction surface can be maximized. In particular, the lower end surface of the rectangular tube-shaped member forms an arc surface R that can come into contact with the gentle arc-shaped surface G of the brackets 8 and 9 with substantially the same power factor, and the arc-shaped surface G of the L-shaped steel materials 13 and 13 is formed on the arc-shaped surface G. On the other hand, the position is adjusted in close contact, and welding is performed at an appropriate position.
Thus, in the third embodiment, the steel braces 2 and 2 are mainly composed of a rectangular tubular steel material having extremely high buckling resistance, and the length adjustment and inclination adjustment in welding can be easily performed at the site construction. It is characterized in that it is performed by a simple welding operation.

  In order to use the seismic panel according to the third embodiment for seismic reinforcement, first, a steel frame 1 suitable for a frame of an existing structure is prepared. In the steel frame 1, the center bracket 10 and the corner brackets 8 and 9 are attached to the column members 4 and 5 and the beam member 6 as described above. The center bracket 10 and the corner brackets 8 and 9 are used to attach steel braces 2 and 2 having an arbitrary length corresponding to the size of the steel frame 1 with optimum strength.

  In the third embodiment, since the inclination of the arcuate convex curved surface P of the center bracket 10 can be adjusted together with the concave curved surface R of the steel brace 2, the strength can be increased according to the angle of the beam member 6. The other ends of the steel braces 2 and 2 can be joined to the corner brackets 8 and 9 with an optimum length and inclination.

  In addition, in the seismic reinforcement using the seismic panel of the above-mentioned embodiment, after the construction contract is made with the existing design drawing, the steel frame of the seismic panel is manufactured in advance, so that the length of the steel brace can be adjusted for a short time. Delivery can be realized. With respect to conventional steel braces, most of the designs are centered on H-shaped steel materials. In this case, a buckling prevention member for the steel braces is required separately.

  Adopting a square tube brace as the steel brace as in the third embodiment can ensure sufficient buckling resistance without preparing a separate buckling prevention member. Further, when the steel brace is a K-type brace, only a part of the panel surface is blocked, so that the lighting rate is not deteriorated and the appearance is not greatly impaired.

As described above, according to the third embodiment, the steel frame 1 installed along the frame of the existing structure, and the steel brace 2 made of the rectangular tube steel material installed in the steel frame 1 2 Therefore, the earthquake-resistant panel can be easily and quickly delivered to an existing structure without preparing a detailed design drawing or performing the construction according to the design drawing. Moreover, the constructed earthquake-resistant panel is only blocked by a part of the opening, so that the necessary lighting rate can be sufficiently secured. In addition, there is an advantage that it is possible to minimize deterioration of the appearance after construction.
In addition, in this embodiment, the attachment example with the frame can be applied not only to the conventional K-bracing method with a frame, which is a conventional construction method, but also to an external bracing method.

(Fourth embodiment)
19 is a front view of a seismic panel according to a fourth embodiment of the present invention, FIG. 20 is a sectional view taken along line MM in FIG. 19, FIG. 21 is a sectional view taken along line NN in FIG. 19 is a cross-sectional view taken along the line OO of FIG. 19, FIG. 23 is a cross-sectional view of the main part showing the mounting structure of the steel brace shown in FIG. 19, FIG. 24 is a cross-sectional view taken along the line P-P of FIG. It is R line sectional drawing.
In the seismic panel according to the fourth embodiment, the steel braces 2 and 2 are connected to the center bracket 10 and the corner brackets 8 and 9, and the cross joints 20 and 21 are arranged on the center bracket 10 and the corner brackets 8 and 9. At the same time, the cross joints 22 having the same shape are arranged at both ends of the steel braces 2 and 2, and the steel braces 2 and 2 are connected to the center bracket 10 and the corner brackets 8 and 9 via the attachment plate 23. Are connected with bolts 24. Details of this embodiment are as shown in FIGS. In each figure, the same parts as those in FIGS. 1 to 6 are denoted by the same reference numerals.
The seismic panel shown in the fourth embodiment is convenient for carrying out construction work by bringing a ton panel to the construction site.

As shown in FIG. 19, the seismic panel according to the fourth embodiment supports a rectangular steel frame 1, steel braces 2 and 2 attached to the steel frame 1, and the steel braces 2 and 2. The corner brackets 8 and 9 and the center bracket 10, the cross joints 20 and 21 connecting the steel braces 2 and 2 and the center brackets 8, 9, and 10, and the splicing plate 23 connecting the cross joints 20, 21, and 22; Consists of bolts 24.
This steel frame 1 has a structure in which left and right column members 4 and 5 and upper and lower beam members 6 and 7 to be mounted on a construction frame are connected to a substantially rectangular frame, and both left and right ends are fixed by welding or the like. It is connected. A center bracket 10 is provided at the center of the corner brackets 8 and 9 disposed at any one of the upper and lower beam members of the steel frame 1 and the upper and lower beam members 6 and 7 facing the brackets 8 and 9. Arranged. In this embodiment, the left and right column members 4 and 5 and the upper and lower beam members 6 and 7 have a plurality of studs 11 attached to a substantially h-shaped H-shaped steel material at substantially equal intervals.

As shown in FIGS. 19 and 20, the upper beam member 6 is composed of members 6 a and 6 b that are divided into left and right parts, which are connected in the horizontal direction with the center bracket 10 interposed therebetween.
The center bracket 10 is composed of a large, substantially U-shaped steel material 12 in which the respective members 6a and 6b are connected to each other on the outer surface and two corresponding gentle convex arcuate surfaces P and P are formed. The upper part of the substantially U-shaped steel material 12 is composed of an H-shaped steel material having an h-shape like the members 6a and 6b. The center bracket 10 is also planted with studs 11 similar to those provided on the H-shaped steel material.

  As shown in FIGS. 1 and 3, the corner brackets 8 and 9 are substantially L-shaped steel members 13 whose outer surfaces are welded to both ends of the lower beam member 7 and lower ends of the column members 4 and 5. , 13. The L-shaped steel materials 13 and 13 are respectively welded in a state of forming gentle convex arcuate surfaces G and G, respectively. Here, the convex arcuate surfaces G and G of the corner brackets 8 and 9 and the convex arcuate surfaces P and P of the center bracket 10 are arranged opposite to each other and form substantially the same curvature surface. ing. Further, the concave arcuate surfaces R, R, R, and R of the steel braces 2 and 2 also have corresponding curvatures. For this reason, the joining positions of the steel braces 2 and 2 with respect to the corner brackets 8 and 9 or the center bracket 10 can be brought into contact with each other without causing a large gap therebetween. As a result, the steel braces 2 and 2 can be easily adjusted or set. The corner brackets 8 and 9 are also planted with studs 11 similar to those provided on the H-shaped steel material.

  As shown in FIGS. 19 to 25, the cross joint of the fourth embodiment includes a cross joint 20 attached to the center bracket 10 side by welding or the like, and a corner joint 8 or 9 side attached by welding or the like. It is composed of a cross joint 21 that is worn. Between the two, a cross-shaped joint 22 having the same shape is disposed so as to face both ends of the steel braces 2 and 2. The cross joints 22 and 22 are fastened to the joint 21 with the fitting bolts 24 in the vicinity of the dotted lines of the joints 20 and 21, respectively.

  Next, as shown in FIGS. 19 and 24, the steel braces 2, 2 are formed with concave curved surfaces R corresponding to the respective arc-shaped side surfaces of the brackets 8, 9, 10 on both ends of the steel braces, Yes. Both of them are fixed to each other by abutting the cross joints 20, 21 of the arc-shaped side faces R, G facing each other on both ends, with the abutment plates 23, 23, 23 coming in contact from above and below. The cross joints 20 and 21 are finely adjusted according to the angle between the center bracket 10 and the corner brackets 8 and 9, and the arcuate curved surfaces of the brackets 8, 9, and 10 and the curved surfaces of the side steel braces 2 are obtained. Butted and welded. For this reason, it can be disassembled and brought to the construction site, assembled and fine-tuned at the site, so that construction work can be performed without detailed design drawings.

  Therefore, the steel brace 2 can arbitrarily adjust the coupling angle and length with respect to the beam members 6 and 7. As a result, the lower end of the steel brace 2 can be joined and fixed to the L-shaped steel members 13 and 13 of the corner brackets 8 and 9 at a coupling angle that provides optimum brace rigidity. In addition, the structural strength can be maximized. In particular, the lower end surface of the rectangular tube-shaped member forms an arc surface R that can come into contact with the gentle arc-shaped surface G of the brackets 8 and 9 with substantially the same power factor, and the arc-shaped surface G of the L-shaped steel materials 13 and 13 On the other hand, the position is adjusted in close contact, and welding is performed at an appropriate position.

  The cross joints 22, 22 are welded to both ends of the steel braces 2, 2, and the arcuate surface of the other cruciform joint 20, 21 is at an appropriate position on the arcuate surface P of the U-shaped steel material of the center bracket 10. Welded. These cross joints 20 and 21 can be of any length at the construction site, and are used to connect the steel braces 2 and 2 and the center bracket 10 respectively. In this joining operation, as shown in FIG. 19, a plurality of accessory plate plates 23, 23,... Are applied so as to straddle both cruciform joints 20, 21, 22, and bolts 24, 24,. By connecting, sufficient buckling resistance can be obtained.

  Thus, in the fourth embodiment, the steel braces 2 and 2 are mainly composed of a rectangular tubular steel material having extremely high buckling resistance, and the length adjustment and inclination adjustment in joining can be easily performed at the site construction. It is characterized in that it is performed by a simple welding operation.

  In order to use the seismic panel of the present invention for seismic reinforcement, first, a steel frame 1 suitable for a frame of an existing structure is prepared. In the steel frame 1, the center bracket 10 with a cross joint and the corner brackets 8 and 9 with a cross joint are attached to the column members 4, 5 and the beam member 6 as described above. The center bracket 10 and the corner brackets 8 and 9 are used to attach steel braces 2 and 2 having an arbitrary length corresponding to the size of the steel frame 1 with optimum strength.

  In the fourth embodiment, since the inclination of the arcuate convex curved surface P of the center bracket 10 can be adjusted together with the concave curved surface R of the steel brace 2, a corresponding cross joint is attached, Corresponding to the angle of the beam member 6, the other ends of the steel braces 2, 2 can be welded to the corner brackets 8, 9 with an optimum length and inclination in terms of strength.

  In addition, in the seismic reinforcement using the seismic panel of the fourth embodiment, after the construction contract with the existing design drawing, the steel frame of the seismic panel is manufactured in advance, so that only the length adjustable steel brace can be attached. Short-term delivery can be realized. Furthermore, it can be brought to the installation site. With respect to conventional steel braces, most of the designs are centered on H-shaped steel materials. In this case, a buckling prevention member for the steel braces is required separately.

  As described above, the seismic panel of the fourth embodiment is composed of the steel braces 2 and 2 centering on a square tubular steel material having extremely high buckling resistance, and the length adjustment and inclination adjustment in the building are cross-shaped. It is characterized in that it is performed by length adjustment by the joints 23 and 24.

  Further, the total length of the steel brace 3 can be arbitrarily set by the cross joints 20 and 21. Therefore, the brace 3 can be reliably connected between the center bracket 10 and the corner brackets 8 and 9 with a set length corresponding to these distances.

  Adopting a square tube brace as the steel brace as in the fourth embodiment can secure sufficient buckling resistance without preparing a separate buckling prevention member. Further, when the steel brace is a K-type brace, only a part of the panel surface is blocked, so that the lighting rate is not deteriorated and the appearance is not greatly impaired.

As described above, in the fourth embodiment, the steel frame 1 installed along the frame of the existing structure, and the steel braces 2 and 2 made of a square tube steel material installed in the steel frame 1 are provided. Therefore, the earthquake-resistant panel can be easily and quickly delivered to an existing structure without preparing a detailed design drawing or performing the construction according to the design drawing. It is especially possible to bring it to a construction site. Moreover, the constructed earthquake-resistant panel is only blocked by a part of the opening, so that the necessary lighting rate can be sufficiently secured. In addition, there is an advantage that it is possible to minimize deterioration of the appearance after construction.
In addition, in this embodiment, the attachment example with the frame can be applied not only to the conventional K-bracing method with a frame, which is a conventional construction method, but also to an external bracing method.

  The present invention increases the seismic strength by assembling a steel frame and a steel brace made of a square tubular steel material to the frame of the existing structure, and for this seismic reinforcement, the construction work is performed by selecting a coupling pattern of a plurality of members. It can be applied to simple and quick delivery.

The front view of the earthquake-resistant panel which shows the 1st example of an embodiment based on this invention AA line sectional view of FIG. BB sectional view of FIG. CC sectional view of FIG. Sectional drawing of the principal part which shows the attachment structure of the steel brace shown in FIG. DD sectional view of FIG. Front view of an earthquake-resistant panel showing a second embodiment according to the present invention EE sectional view of FIG. FF sectional view of FIG. GG sectional view of FIG. Sectional drawing of the principal part which shows the attachment structure of the steel brace shown in FIG. 12 is a cross-sectional view taken along line HH in FIG. FIG. 13 is a front view of an earthquake-resistant panel showing a third embodiment according to the present invention. Sectional view taken along the line II of FIG. JJ sectional view of FIG. KK sectional view of FIG. Sectional drawing of the principal part which shows the attachment structure of the steel brace shown in FIG. LL sectional view of FIG. Front view of an earthquake-resistant panel showing a fourth embodiment according to the present invention MM sectional view of FIG. NN sectional view of FIG. 19 is a cross-sectional view taken along line OO in FIG. Sectional drawing of the principal part which shows the attachment structure of the steel brace shown in FIG. PP sectional view of FIG. RR line sectional view of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Steel frame, 2 ... Steel brace, 4, 5 ... Column member, 6, 7 ... Beam member, 8, 9 ... Corner bracket, 10 ... Center bracket, 17 ... Connection steel plate, 18 ... Connection steel plate with a pin, 19 ... Pins 20, 21, 22... Cross joint, 23.

Claims (4)

An anti-seismic panel comprising a steel frame installed along a frame of an existing structure and a steel brace installed in the steel frame,
The joint surface of the corner bracket disposed at one of the upper and lower corners of the steel frame and the steel brace of the center bracket disposed at the center of the beam member on the side facing the corner is formed in an arc shape. While forming, both ends of the steel brace are also formed in an arc shape opposite to the corner bracket or the center bracket,
The steel brace and the corner bracket or the center bracket are melted and welded with arcuate surfaces facing each other, and a steel brace made of a square tube steel material is installed between the corner bracket and the center bracket, together with the beam member A seismic panel that features a K-type brace. An anti-seismic panel comprising a steel frame installed along a frame of an existing structure and a steel brace installed in the steel frame,
The joint surface of the corner bracket disposed at one of the upper and lower corners of the steel frame and the steel brace of the center bracket disposed at the center of the beam member on the side facing the corner is formed in an arc shape. While forming, both ends of the steel brace are also formed in an arc shape opposite to the corner bracket or the center bracket,
The steel brace and the corner bracket or the center bracket are melted and welded with arcuate surfaces facing each other, and a pair of connecting steel plates are welded to the joint, and a square tube is formed between the corner bracket and the center bracket. A seismic panel characterized in that a steel brace made of mold steel is erected and a K-type brace is formed together with the beam member. An anti-seismic panel comprising a steel frame installed along a frame of an existing structure and a steel brace installed in the steel frame,
The joint surface of the corner bracket disposed at one of the upper and lower corners of the steel frame and the steel brace of the center bracket disposed at the center of the beam member on the side facing the corner is formed in an arc shape. And forming both ends of the steel brace in an arc shape opposite to the corner bracket or the center bracket,
The steel plate brace and the corner bracket or the center bracket are abutted by opposing arcuate surfaces, and a connecting steel plate with pins having pin shafts at both ends of the steel brace is disposed at the joint, and the connecting steel plate The pin shaft is attached to the corner bracket or the pin provided on the center bracket, and a steel brace made of a square tube steel material is installed between the corner bracket and the center bracket, and a K-type brace is mounted together with the beam member. Seismic panel characterized by comprising. An anti-seismic panel comprising a steel frame installed along a frame of an existing structure and a steel brace installed in the steel frame,
The joint surface of the corner bracket disposed at one of the upper and lower corners of the steel frame and the steel brace of the center bracket disposed at the center of the beam member on the side facing the corner is formed in an arc shape. And forming both ends of the steel brace in an arc shape opposite to the corner bracket or the center bracket,
Attach the cruciform joint to the opposite arcuate surfaces of the steel brace and the corner bracket or the center bracket, butt the cruciform joints together, and tighten them with bolts via an attachment plate. An anti-seismic panel comprising a steel brace made of a square tube steel material between a corner bracket and the center bracket, and a K-type brace together with the beam member.

Images