Attachment structure of brace to column

Abstract

To provide an attachment structure of a brace to a column capable of preventing occurrence of out-of-plane deformation and buckling on the column bearing axial force of the brace.SOLUTION: A structure is configured to attach a column-side joint end 15y of a brace 15 provided in a column-beam frame 5 constructed by joining a column 2 and a beam to the column, wherein the column is provided with: a pair of joint plates 24 provided by being joined to a pair of column surfaces of both sides in a column width direction; a base plate 25 joined to both of the pair of joint plates and provided in an arrangement facing the column in the column-beam frame; and a brace connection plate 26 provided by being joined to the base plate and connected to the column-side joint end of the brace.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention prevents out-of-plane deformation and buckling of columns that bear the axial force of the brace. This relates to a brace mounting structure to a column that can prevent this. [Background technology]

[0002] The column-side joint end of the brace installed in the frame constructed by joining the column and the beam is attached to the column. For example, Patent Document 1 discloses a structure for attaching a joint to a structure for earthquake-resistant reinforcement. "Construction" refers to a metal fitting that connects earthquake-resistant reinforcement members to structural members with a square or circular cross section. The metal fitting has a joint that is surface-joined with one surface of the structural member, and the metal fitting and one surface of the structural member The connecting hardware has a reinforcing part on the opposite side of the connecting part, and the reinforcing part is At least one horizontal reinforcing rib is fixed to the section. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-270320 Summary of the Invention [Problem to be solved by the invention]

[0004] In the background art, metal joints are surface-joined to structural members such as pillars with adhesive or the like. The axial force of the brace connected to the metal fittings causes out-of-plane deformation of the structural member along with the metal fittings. When out-of-plane deformation occurs in a structural member, the structural member is subject to stress. This makes the brace more susceptible to buckling due to the axial force it carries. There was a problem in that the column-beam structure would collapse before it could be fully utilized.

[0005] The present invention has been devised in view of the above-mentioned conventional problems, and provides a structure for bearing the axial force of the brace. The brace prevents out-of-plane deformation and buckling of the column. The object is to provide a mounting structure. [Means for solving the problem]

[0006] The brace mounting structure of the present invention is installed in a frame constructed by joining columns and beams. The column side joint end of the brace is attached to the column, and the column is provided with a A pair of joining plates are provided to join the pair of column surfaces on both sides, respectively; The base plate is connected to both the columns and the base plate, and is installed in the frame facing the columns. and a base plate, which is connected to the column-side joint end of the brace. and a brace connecting plate.

[0007] The base plate is disposed with a gap between it and the pillar.

[0008] The base plate is disposed in contact with the pillar.

[0009] The base plate has a pair of first connecting plates on the front and back sides, respectively, which are connected to the pair of connecting plates. A pair of first joints and a second joint with the brace connection plate are set, The second joint is located between the first and second joints.

[0010] A reinforcing rib material is provided and joined to both the base plate and the brace connecting plate. It is characterized by being able to

[0011] The brace connection plate and the brace have an arm plate and a torsional moment. The brace is connected to the upper brace through a vibration damper that attenuates external vibration forces. The arm plates are rotatable via pins inserted into pin holes that connect them. It is characterized by being connected.

[0012] The brace connecting plate is provided with the arm plate sandwiched in the direction of insertion of the pin. an additional pin located on the opposite side of the brace connecting plate and through which the pin is rotatably inserted; The arm plate has one end with a hole and the other end joined to the brace connecting plate. On both sides of the plate, reinforcing hardware is provided to support both ends of the pin together with the brace connection plate. It is characterized by being able to

[0013] The reinforcing rib material is preferably arranged in the vicinity of the pin hole of the brace connecting plate. It is a sign. [Effects of the Invention]

[0014] In the brace-to-column mounting structure according to the present invention, the column that bears the axial force of the brace is It is possible to prevent out-of-plane deformation and buckling from occurring. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing a preferred embodiment of a brace-to-column mounting structure according to the present invention. FIG. [Figure 2] FIG. 2 is an enlarged view of a main part of the structure for attaching the brace to the column shown in FIG. 1. [Figure 3] 2. FIG. [Figure 4] FIG. 2 is an exploded perspective view of the vibration damper shown in FIG. [Figure 5]FIG. 2 is an enlarged view of the brace shown in FIG. 1. [Figure 6] 6 is a cross-sectional view taken along line BB in FIG. 5. [Figure 7] 5. FIG. [Figure 8] 3 is an explanatory diagram illustrating a case where the second pin shown in FIG. 2 is supported at one end. [Figure 9] 3 is an explanatory diagram illustrating a case where the second pin shown in FIG. 2 is supported at both ends. [Figure 10] 10 is a schematic diagram showing a modified example of the mounting structure of the brace to the column according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] The following describes a preferred embodiment of the brace-to-column mounting structure according to the present invention, with reference to the accompanying drawings. This will be explained in detail in reference to the above.

[0017] FIG. 1 shows an example of a frame to which the brace-to-column mounting structure according to this embodiment is applied. 1 shows the overall configuration of a beam-column frame 5 equipped with a vibration damper 1. The vibration damper 1 is attached to a beam 3. It is provided between the joined brace 15 and the column 2.

[0018] First, the vibration damper 1 will be described. As shown in FIG. A pair of upper and lower beams 3 (only the upper beam is shown in the illustration) are attached to the column 2 (only the left column is shown in the illustration). (shown) are constructed by joining the columns and beams at the joints 4. It is installed inside a rectangular beam-post frame 5 (see FIG. 10) made of cleat or wood.

[0019] The illustrated example is a steel-framed column-beam frame 5, in which the beams 3 are made of I-shaped steel and the columns 2 are hollow steel with a square cross section. The column 2 is made of pipe (see Figure 3). The column 2 can have any cross-sectional shape, such as a circular cross-section. may be.

[0020] Vibration control damper 1 is a damper that prevents external vibrations in the horizontal and vertical directions that occur during earthquakes and other events from affecting the column-beam structure. When the vibration external force is deformed, the vibration external force energy is absorbed and damped.

[0021] As shown in FIGS. 1, 2 and 4, the vibration damper 1 comprises one circular pipe member 6 and one first A unit part consisting of an arm plate 7 and a pair of second arm plates 8, 8. It is composed of:

[0022] The circular pipe member 6 is formed of a hollow cylinder made of steel. The pipe member 6 has an opening 6a that allows the interior thereof to be seen.

[0023] The first arm plate 7 is a steel plate having a length and a width, and is The width of the base end 7a is wide, and the width of the tip end 7b, which is the other end in the length direction, is narrow. Formed by contours.

[0024] In the illustrated example, the outer contour of the first arm plate 7 is as follows: It is formed into an egg shape with a gradually narrowing width.

[0025] The base end 7a of the first arm plate 7 is provided with a cylindrical member 6 and a cylindrical member 7a. The first through hole 9 through which the material 6 passes is formed. The contour is an arc concentric with the center C1 of the first through hole 9 and has an outer diameter larger than the inner diameter of the first through hole 9. It is formed including a part.

[0026] The tip portion 7b of the first arm plate 7 has a first pin 10, which will be described later, inserted therethrough. The outer contour of the tip portion 7b of the first arm plate 7 is such that the first pin hole 11 is formed therein. The first pin hole 11 is formed to include an arcuate portion concentric with the center C2 of the first pin hole 11 and having an outer diameter larger than the inner diameter of the first pin hole 11. do.

[0027] Therefore, the first arm plate 7 has a base end 7a where the first through hole 9 is formed, and the first pin 7b is inserted into the base end 7a. In the longitudinal direction toward the tip portion 7b where the hole 11 is formed, the periphery of the first through hole 9 is formed wider. The area around the first pin hole 11 is narrowed.

[0028] Furthermore, the first arm plate 7 has a center C1 of the first through hole 9 and a center C of the first pin hole 11. 2. The first arm plate 7 is formed symmetrically with respect to an axis P1 of the first arm plate 7 connecting the first arm plate 7 and the second arm plate 7.

[0029] The second arm plate 8 is made of steel and has a length and width similar to the first arm plate 7. The plate material has a base end 8a at one end in the length direction which is wider than the other end in the length direction. The width dimension of the tip portion 8b is formed with a narrow outer contour.

[0030] In the illustrated example, the outer contour of the second arm plate 8 is as follows: It is formed into an egg shape with a gradually narrowing width.

[0031] The base end 8a of the second arm plate 8 is provided with a cylindrical member 6 and a cylindrical member 7. The second through hole 12 through which the member 6 passes is formed. The contour is concentric with the center C3 of the second through hole 12 and has an outer diameter larger than the inner diameter of the second through hole 12. The arc portion is formed by including the arc portion.

[0032] The tip 8b of the second arm plate 8 has a second pin 13, which will be described later, inserted therethrough. The outer contour of the tip portion 8b of the second arm plate 8 is such that the second pin hole 14 is formed therein. The second pin hole 14 is formed concentrically with the center C4 of the second pin hole 14 and includes an arcuate portion having an outer diameter larger than the inner diameter of the second pin hole 14. do.

[0033] Therefore, the second arm plate 8 has a base end 8a where the second through hole 12 is formed, and the second pin In the longitudinal direction toward the tip portion 8b where the through hole 14 is formed, the periphery of the second through hole 12 is wide. The width of the second pin hole 14 is narrowed.

[0034] Furthermore, the second arm plate 8 has a center C3 of the second through hole 12 and a center C4 of the second pin hole 14. The second arm plate 8 is formed symmetrically with respect to the axis P2 connecting C4 of the second arm plate 8.

[0035] The pair of second arm plates 8, 8 are formed identically from the same material and with the same dimensions. In addition, the first arm plate 7 and the second arm plate 8 have the same external shape except for the plate thickness. It is desirable that they are formed in the same place, but they do not necessarily have to be the same.

[0036] Regarding the relationship between the first arm plate 7, the second arm plate 8 and the cylindrical member 6, The thickness of the first arm plate 7 is thicker than the thickness of the second arm plate 8. The thickness of the first arm plate 7 is set to be thicker than the thickness of the cylindrical member 6. It is preferable that the thickness is twice the thickness of the second arm plate 8.

[0037] The cylindrical member 6 is inserted into the second through-hole 12 of the second arm plate 8 in the longitudinal direction thereof, The first through-hole 9 of the first arm plate 7 and the second through-hole 12 of the second arm plate 8 are The first arm plate 7 and the second arm plate 8,8 are provided with a through hole.

[0038] The first arm plate 7 is positioned between the pair of second arm plates 8, 8. The arm plate 7 is disposed in the center portion of the circular pipe member 6 in the longitudinal direction.

[0039] The pair of second arm plates 8, 8 are respectively provided on both sides of the first arm plate 7 and have a circular tube portion. They are arranged at both ends of the material 6 in the longitudinal direction.

[0040] The first arm plate 7 and the second arm plate 8 on one side, and the first arm plate 7 and the second arm plate 8 on the other side The second arm plates 8 are arranged at equal distances L in the longitudinal direction of the cylindrical member 6 (see FIG. 3). reference).

[0041] From the second through holes 12, 12 of the pair of second arm plates 8, 8 on both sides, a circular pipe is The ends of the member 6 in the length direction, that is, the tube ends 6b, are each protruded.

[0042] The first arm plate 7 and the pair of second arm plates 8, 8 each have a first through hole 9 The entire circumference of the second through hole 12 and the entire circumference of the second through hole 13 are integrally welded to the cylindrical member 6 by fillet welding. The components are effectively joined and fixed.

[0043] As described above, the vibration damper 1 includes the first arm plate 7 and a pair of second arm plates. By joining and fixing the components 8, 8 to the cylindrical member 6, they are configured as a united component.

[0044] The vibration damper 1 has an external shape including a first arm plate 7 and a second arm plate 8. These are arranged in a straight line around the cylindrical member 6 or are overlapped at the same position. It is formed in a bent shape that does not become loose.

[0045] That is, the vibration damper 1 has a first arm plate 7 and a second arm plate 8, which are arranged in a circular pipe. They are configured so that one is bent relative to the other via the member 6 .

[0046] In detail, the axis P1 of the first arm plate 7 and the axis P2 of the second arm plate 8 are The first arm plate 7 is attached to the cylindrical member 6 so that the axis P2 intersects with the axis P3. and the second arm plate 8 are joined and fixed together.

[0047] The pair of second arm plates 8, 8 are attached to the cylindrical member 6 in parallel directions. In this case, the two parts overlap in the same direction (not in a twisted position) when viewed in the longitudinal direction of the cylindrical member. .

[0048] The vibration damper 1 configured as above is provided inside the column-beam frame 5 described above. The upper beam 3, which is one of the upper and lower beams that make up the beam frame 5, is provided with a brace 15 made of H-shaped steel. The shape and material of the brace 15 are not limited to H-shaped steel.

[0049] The brace 15 has a beam-side joint end 15x at one end in the longitudinal direction, which is a distance from the column-beam joint 4. It is joined and fixed to the middle of the length (horizontal direction) of the upper beam 3 that separates the two.

[0050] The other end of the brace 15 in the longitudinal direction, which is the column-side joint end 15y, is provided with a vibration-damping damper. The first arm plate 7 of the first arm is connected.

[0051] Specifically, the column-side joint end 15y of the brace 15 is connected to the first arm plate 7 and the first pin The first pin 10 is inserted through the hole 11 and is pin-coupled to the first pin 10 so as to be freely rotatable.

[0052] The left column 2, which is one of the left and right columns that make up the column-beam frame 5, is connected to a brake via a vibration damper 1. A joining bracket unit 16 is provided to connect the slats 15.

[0053] The joint bracket unit 16 is located at the vertical height of the left column 2, which is spaced apart from the column-beam joint 4. It is joined and fixed at the midpoint of the direction.

[0054] The connecting bracket unit 16 is provided with a second arm plate of the vibration damper 1. 8,8 are connected.

[0055] Specifically, the joining bracket unit 16 includes the second arm plates 8, 8 and The second pins 13, 13 are inserted into the second pin holes 14, 14, and the pins are rotatably connected. will be done.

[0056] As described above, the brace 15 has a beam-side joint end 15x at one end in the longitudinal direction joined to the upper beam 3. The other end of the length is fixed to the column side joint end 15y through the first pin insertion hole 17. It is connected to plate 7.

[0057] As shown in FIGS. 5 to 7, the brace 15 has a beam-side joint end 15x along the underside of the upper beam 3. The brace end face is welded to a steel connection plate 18, which is formed flat by welding. 15a of the brace 15, and are welded to both sides of the brace 15, and are joined to the joining plate 1 8 and a pair of steel reinforcing ribs 19 welded to each other.

[0058] The brace 15 is formed by connecting the connecting plate 18 to the bottom of the upper beam 3 with a bolt 20. The sensor is attached and fixed with high rigidity.

[0059] At the column side joint end 15y of the brace 15, a pair of steel The spacers 21 are provided, and the spacers 21 are overlapped with each other and are arranged outside the brace 15. A pair of steel connecting plates 22 are provided, each protruding toward the center of the connecting plate 2. 2 is connected to the web 15a with bolts and nuts 23 via a spacer 21, and is highly rigid. It will be established.

[0060] The connecting plate 22 is formed with a first pin insertion hole 17. The arm plate 7 has a tip portion 7b of the first arm plate 7 between a pair of connecting plates 22. The first pin hole 11 is aligned with the pair of first pin insertion holes 17, and then The first pin 10 is inserted through the first pin hole 11 and the first pin insertion hole 17. , are rotatably connected to each other by a pin.

[0061] A connecting bracket unit for connecting the column side connecting end 15y of the brace 15 to the left column 2 16 is a pair of connecting plates that are connected to the left column 2 as shown in FIGS. 1 to 3. 24, 24 and a pair of connecting plates 24 are connected to each other, and the left column 2 and the right column 2 are connected to each other in the column-beam frame 5. The base plate 25 and the second arm plates 8, 8 are arranged in a manner that matches the number of the base plate 25 and the second arm plates 8, 8. The column side of the brace 15 is connected to the base plate 25 via the vibration damper 1. and brace connecting plates 26, 26 for connecting to the joint end 15y.

[0062] The pair of joining plates 24, 24 are arranged so as to sandwich the left column 2, which has a square cross section, from both sides. The joining plates 24, 24 are respectively joined to a pair of column side surfaces on both sides in the column width direction. is formed from a rectangular steel plate material.

[0063] Each of these joining plates 24, 24 has its plate surface overlapped on the side surface of the column, and four Among the edges, one edge facing the column-beam frame 5 (hereinafter referred to as the base plate side edge) 24 Except for b, the three edges 24a are joined to the side surface of the column by fillet welding.

[0064] The pair of joining plates 24, 24 have base plate side edges 24b. The back surface of the plate 25 is welded. The base plate 25 is made of a rectangular steel plate. will be done.

[0065] The base plate 25 is fixed to the base plate side edge 2 of both of the pair of joining plates 24, 24. 4b, 24b, and is arranged facing the left column 2 inside the column-beam frame 5. That is, the base plate 25 is not joined to the left pillar 2.

[0066] The base plate side edge 24b of the joint plate 24 protrudes from the left column 2 into the column-beam frame 5. In this case, the base plate 25 is positioned with a gap between it and the left column 2. It will be placed.

[0067] Alternatively, the base plate side edge 24b is flush with the left column 2 without protruding from the left column 2. In this case, the base plate 25 is placed in contact with the left column 2. do.

[0068] The base plate 25 and the connecting plate 24 have approximately the same vertical dimension in the column height direction. The horizontal dimension of the base plate 25 in the column width direction is determined by the pair of joining plates 24 on both sides of the left column 2. ,24 are joined together, the dimension is larger than the dimension in the column width direction. The horizontal dimension S along the side of the column of the rate 24 is at least half the width dimension of the side of the column of the left column 2. It is said that.

[0069] The horizontal dimension S of the joint plate 24 is large because the axial force of the brace 15 is large and the load it can bear is large. In this case, the welding amount is large, and in the case of a small load, the welding amount is Since less is needed, it should be smaller.

[0070] The three edges 24a and the base plate side edge 24b are welded to the side of the left column 2. Considering the four welding points on the four edges, the joining plate 24 has a horizontal dimension S and a vertical dimension It is desirable that all the pieces be of equal square shape and welded to the side of the column and the base plate 25. I wish.

[0071] The surface of the base plate 25 opposite to the back surface to be joined to the joining plate 24 is provided with a plurality of In the illustrated example, two brace connection plates 26, 26 are joined to the circular pipe member 6. The second arm plates 8, 8 are welded together at intervals in accordance with the arrangement of the second arm plates 8, 8.

[0072] Each brace connecting plate 26, 26 is formed of a substantially rectangular steel plate material, and the vertical dimension is The dimensions of the brace connection plates 26, 26 are approximately the same as those of the brace connection plates 24. The shape and vertical dimensions are not limited to these.

[0073] The brace connecting plate 26 has four edges, one of which is connected to the base plate 25. The second arm plate is joined by fillet welding from the base plate 25 to the inside of the column-beam frame 5. It protrudes towards 8.

[0074] The base plate 25 has a pair of joining plates 24, 24 on the front and back. The first joint is set, and the pair of second joints with the pair of brace connecting plates 26, 26 are connected. Two joints are set, and these second joints are a pair of joint plates that are equivalent to the width of the left column 2. The distance is set between the first joints so as not to exceed the distance between the ports 24, 24.

[0075] A second pin insertion hole 30 is formed through the brace connecting plate 26. The pair of brace connecting plates 26, 26 and the pair of second arm plates 8, 8 are The second pin holes 14 and the second pin insertion holes 30 are aligned, and Then, the second pin 13 is inserted through the second pin hole 14 and the second pin insertion hole 30. Thus, a pair of second arm plates 8, 8 are connected to each brace connecting plate 26, 26. The pins are connected so that they can rotate freely.

[0076] That is, in this embodiment, the column side joint end 15y of the brace 15 is attached to the left column 2. Regarding the structure, the second arm plates 8, 8 of the vibration damper 1 are connected to the brace connecting plate 26, 26 and the brace 15, and The race connecting plates 26, 26 are provided in the second pin holes 14 and the second pin insertion holes 30. The second pin 13 allows the shaft to be rotatably connected to the shaft.

[0077] Each brace connecting plate 26, 26 and the base plate 25 are joined to each other, and a steel plate material A reinforcing rib material 28 formed of is provided.

[0078] The reinforcing rib material 28 reinforces the joint between the brace connecting plate 26 and the base plate 25. In order to do this, the corners of the brace connection plates 26 and the base plate 25 are It is provided so as to connect the two.

[0079] In addition, the reinforcing rib material 28 prevents the axial force from the brace 15 from being input to the brace connecting plate 26. In the illustrated example, the reinforcing rib material 28 is disposed in the vicinity of the second pin insertion hole 30. Two plates are provided, sandwiching the bolt insertion hole 30 from both sides in the column height direction.

[0080] Furthermore, as shown in FIG. 3, the brace connecting plate 26 is provided with a reinforcing rib material 28. The brace connecting plate 26 and the second arm plate 8 are connected to the back surface opposite to the surface to which the brace connecting plate 26 is connected. A reinforcing metal piece 31 is provided to reinforce the periphery of the second pin 13 that rotatably connects the first and second pins 13a, 13b.

[0081] As shown in FIG. 9, the reinforcing metal fitting 31 is inserted in the direction of the second pin 13 by the second arm plate. One end 31a is located on the opposite side of the brace connecting plate 26 across the pin 8, and the second pin The other end 31b is connected to the brace connecting plate 26 at a position away from the bolt 13. do.

[0082] At one end 31a of the reinforcing metal piece 31, there is provided an additional pin insert through which the second pin 13 is rotatably inserted. A through hole 31c is formed.

[0083] In the illustrated example, the reinforcing metal fitting 31 is formed from one end 31a to the other end 31b as viewed from the height direction of the pillar. It is formed in an integral L-shape across the entire surface.

[0084] However, the reinforcing metal fitting 31 has one end 31a as a bearing part and the other end 31b as a shaft. It can be used as a spacer to fill the gap between the receiving part and the brace connecting plate 26, and can also be used for assembling other parts. Of course, it may be configured as a body.

[0085] The other end 31b of the reinforcing metal fitting 31 is connected to the high-strength bolt 29 and the nut 3 at two positions, top and bottom, in the column height direction. 2, it is joined and fixed to the brace connecting plate 26.

[0086] As a result, the second pin 13 is inserted through the additional pin insertion hole 31c of the reinforcing metal piece 31 and the brace connecting piece 31c. The reinforcing metal fittings 31 and the brace connecting plate 26 are connected by the second pin insertion holes 30 of the connecting plate 26. It is supported at both ends by the port 26.

[0087] The two ends of the second pin 13 are secured to the bolts 34 via washers 33. It is held by the base connecting plate 26 and one end 31 a of the reinforcing metal fitting 31 .

[0088] Next, the operation of the joint structure of the brace to the column according to this embodiment will be described. When the vibration damper 1 used in this state is provided in the column-beam frame 5, the brace 15 is first attached to the upper beam. Join and fix at the specified location 3.

[0089] Next, both the connecting plate 22 of the brace 15 and the first arm plate 7 of the vibration damper 1 are The first pin 10 is inserted into the first pin insertion hole 17 and the first pin hole 11, and the first pin 10 is rotated. Currently pin-connected.

[0090] Next, install the joining bracket unit 16 at the specified position on the left pillar 2. A pair of joining plates 24, 24 are welded to the left column 2, and then these joining plates 2 A base plate 25 is welded to both 4 and 24.

[0091] Next, the brace connection plates 26, 26 are welded to the base plate 25 for reinforcement. The rib members 28, 28 are attached to both the brace connecting plates 26, 26 and the base plate 25. Weld and join.

[0092] At this time, the joining bracket unit 16 may be formed by, for example, a pair of joining brackets which are part of its constituent members. The joining plates 24, 24, etc. are pre-assembled in a factory, etc., and this assembly is then attached to the left column 2 on site. It may be arranged to be installed.

[0093] Finally, the other end 31b of the reinforcing metal fitting 31 is temporarily fixed to the brace connecting plate 26. The second arm plate of the vibration damper 1 is connected to the brace connecting plate 26 and the reinforcing metal fitting 31. 8 through the second pin insertion hole 30, the additional pin insertion hole 31c, and the second pin hole 14. The second pin 13 is inserted through the brace 31 and the brace 31 is rotatably connected. The connector is then permanently fixed to the connecting plate 26.

[0094] When external vibration forces such as earthquakes act on the column-beam frame 5, repeated deformation (distortion) occurs in the column-beam frame 5. When deformation occurs in the column-beam frame 5, the force accompanying this deformation is transferred from the column 2 to the connecting bracket. The force is input through the unit 16 to the brace 15 connected to the beam 3 and the vibration damper 1 .

[0095] In the vibration damper 1, the input from the first arm plate 7 and the second arm plate 8 is transmitted through a circular pipe. It acts in the circumferential direction of the member 6 (the first pin hole 11 and the second pin hole 14 move toward and away from each other). If so, the torsional moment occurring between the first arm plate 7 and the second arm plate 8 is The circular pipe member 6 is deformed by the force of the shock absorber, thereby attenuating the external vibration force.

[0096] In addition, the input from the first arm plate 7 and the second arm plate 8 is in the horizontal direction, the vertical direction, and the The shear force acting in the vertical direction and also in the diagonal direction in the radial direction of the cylindrical member 6 If the shear force is applied, the circular pipe member 6 is deformed to absorb the energy, thereby attenuating the external vibration force.

[0097] In this way, the vibration damper 1 can absorb energy from both torsional moment and shear force. It absorbs vibrations and efficiently exerts vibration control effects.

[0098] When the vibration damper 1 operates in this manner, the connecting bracket unit 16 is provided with a brace. An axial force acts along the length of the 15.

[0099] In the brace mounting structure to the column according to this embodiment, the base plate 25 is joined to the column 2. The metal fittings are arranged facing the pillar 2 without any need for a structural member. Unlike the background technology where the brace 15 is surface-joined, the axial force of the brace 15 causes out-of-plane deformation in the column 2. This also makes it possible to prevent the column 2 from buckling.

[0100] Therefore, the brace 15 is allowed to fully exert its strength and the vibration damper 1 is allowed to function effectively. It can be done.

[0101] When the base plate 25 is arranged with a gap from the pillar 2, the gap allows the block The base plate 25 that transmits the axial force of the race 15 can be structurally insulated from the column 2. , regardless of whether the brace 15 is in tension or compression, the out-of-plane deformation of the column 2 is reliably prevented. It is possible.

[0102] When the base plate 25 is placed in contact with the column 2, when the brace 15 is tensioned, In this case, the situation is the same as when there is a gap, and when compressed, an axial force acts on column 2.

[0103] However, when the brace 15 is compressed, the base plate 25 acts on the column 2. The base plate 25 receives the axial force, suppressing the out-of-plane deformation of the column 2 and providing vibration damping. The damper 1 can efficiently absorb energy.

[0104] The base plate 25 has a pair of joining plates 24, 24 on the front and back. A pair of second joints are set between the first joint and the pair of brace connecting plates 26, 26. The second joint is located between the pair of first joints, so that the brace connection plate The axial force of the brace 15 transmitted from the base plate 26 is transmitted to the connecting plate 25 through the base plate 25. 24 can be fully communicated and supported.

[0105] A reinforcing rib material 28 is provided by joining it to both the base plate 25 and the brace connecting plate 26. The reinforcing rib material 28 is designed to connect the base plate 25 and the brace. The deformation of both plates 26 can be suppressed, and the axial force of the brace 15 can be efficiently transmitted. The vibration damper 1 can efficiently absorb energy.

[0106] The brace connecting plate 26 and the brace 15 are connected to each other by a torsional moment to damp external vibration forces. Since the connection is made via the vibration damper 1, between the brace 15 and the brace connecting plate 26 The axial force energy of the brace 15 that is transmitted can be effectively absorbed by the vibration damper 1. This reduces the load on the column 2 and prevents the column-beam structure 5 from being destroyed.

[0107] The brace connecting plate 26 and the second arm plate 8 of the vibration damper 1 are rotatably connected. The second pin 13 is reinforced with the brace connecting plate 26 on both sides of the second arm plate 8. Since both ends are supported by the metal fittings 31, the second pin 13 can be properly supported, and at the same time, The second pin 13 can be provided with good precision.

[0108] In FIG. 8, the second pin 13 of the second arm plate 8 is connected to the brace connecting plate 26 alone. 9 shows the case where the second pin 13 is supported by the brake as described in this embodiment. The figure shows a case where both ends are supported by a connecting plate 26 and a reinforcing metal fitting 31.

[0109] In the case of FIG. 8, the second pin 13 is tilted by the movement of the second arm plate 8 and inserted into the second insertion hole 3. 0 etc., or the second pin 13 itself is bent, It is difficult to receive

[0110] In contrast to this, in the case of FIG. 9, the shear force can be stably received, and further, the second pin 1 The cross-sectional area of ​​the second pin 13 can be reduced to make the structure compact. When attaching the second pin 13, the high-strength bolt 29 is loosened and the second pin 13 is inserted into the second insertion hole 30, etc. Then, the high-strength bolt 29 is tightened to set the second pin 13 with high precision. It can be done.

[0111] The reinforcing rib material 28 is arranged near the second pin insertion hole 30 of the brace connecting plate 26. The axial force of the brace 15 transmitted through the second pin 13 is transmitted to the brace connecting plate. 26 and the base plate 25 can be prevented from being deformed, and the entire joining bracket unit 16 can It can properly withstand the axial force of Race 15.

[0112] Figure 10 shows a modified example of the brace mounting structure to the column according to the present invention. In this example, the column-beam frame 5 is a square structure in which a pair of upper and lower beams 3, 3a are joined to a pair of left and right columns 2, 2a. The brace 15 is constructed in such a way that the beam-side joint end 15x of the brace 15 is connected to either of the beam-column frame 5 facing each other. The beam-column joint 4 is set at either the upper corner or the lower corner. The column-side joint end 15y of the brace 15 is connected to the column-beam joint 4 of the upper corner and the column-beam joint 4 of the lower corner. This is the case when the other of the sections 4a and 4b is set.

[0113] In other words, inside the rectangular column-beam frame 5, one diagonal beam is placed between the column-beam joints 4, 4a. This is the case when a brace 15 is provided.

[0114] In the illustrated example, the beam-side joint end 15x of the brace 15 is fixed to the column-beam joint 4 at the upper inside corner. The column side joint end 15y is a joint bracket unit provided near the column beam joint 4a of the lower inside corner. The brace 15 is fixed to the first arm plate 7 via the vibration damper 1. The connecting bracket unit 16 is connected to the second arm 10 via a pin 10 so as to be freely rotatable. The spring plate 8 is rotatably connected to the spring plate 8 via a second pin 13.

[0115] In this modification, the brace 15 and the joint are positioned away from the column-beam joint 4 in the above embodiment. Unlike the bracket unit 16, the beam-column joint 4, 4a or its vicinity is provided with The brace 15 and the like are installed, and even such a modified example is the same as the above embodiment. Of course, the same effect can be achieved. [Explanation of symbols]

[0116] 1 Vibration damper 2 pillars (left pillar) 3 beam (upper beam) 5 Column beam frame 8 Second arm plate 13 Second pin 14 Second pin hole 15 braces 15y brace column side joint end 24 Joint Plate 25 base plate 26 Brace connecting plate 28 Reinforcing rib material 30 Second pin insertion hole 31 Reinforcement hardware 31a One end 31b Other end 31c Additional pin holes

Claims

1. A structure in which the column-side joint end of a brace provided in a frame constructed by joining a column and a beam is attached to the column, A pair of joining plates are provided on the column and joined to a pair of column surfaces on both sides in the column width direction, a base plate joined to both of the pair of joining plates and disposed within the frame so as to face the column; a brace connection plate joined to the base plate and connected to the column-side joint end of the brace, The base plate is disposed in contact with the column and is not joined to the column. A structure for attaching a brace to a column.

2. The brace-to-column mounting structure according to claim 1, characterized in that the base plate has a pair of first joint points with the pair of joining plates and a pair of second joint points with the brace connecting plate on the front and back sides, respectively, and the second joint points are located between the pair of first joint points.

3. 3. The brace-to-column mounting structure according to claim 1, wherein a reinforcing rib material is provided and joined to both the base plate and the brace connecting plate.

4. the brace connecting plate and the brace are connected via a vibration damper that has an arm plate and attenuates external vibration forces by a torsional moment; The brace mounting structure to a column according to any one of claims 1 to 3, characterized in that the brace connecting plate and the arm plate are rotatably connected via a pin inserted into a pin hole connecting them.

5. 5. The brace-to-column mounting structure according to claim 4, wherein the brace connection plate has one end portion that is located on the opposite side of the brace connection plate across the arm plate in the pin insertion direction and has an additional pin hole through which the pin is rotatably inserted, and the other end portion that is joined to the brace connection plate, and reinforcing hardware that supports both ends of the pin together with the brace connection plate is provided on both sides of the arm plate.

6. 6. A brace-to-column mounting structure according to claim 3, wherein the reinforcing rib material is arranged in the vicinity of the pin hole of the brace connecting plate.

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