JP2012031587A - Device for restraining support post in earthquake control and reinforcement frame structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the damping effect of a damper-integrated brace disposed between support posts horizontally adjacent to each other inside the structure plane in an earthquake control and reinforcement frame structure which is constructed outside the structure plane of an existing or new main structure of concrete or the like and in parallel to the structure plane for earthquake control and reinforcement of the main structure.SOLUTION: Restraint devices 8 which permit the horizontal relative movement between the top portions of uppermost support post members 23 and restrain their vertical movements are constructed around support posts 2 positioned on horizontal both sides inside a structure plane in an earthquake control and reinforcement frame structure which comprises the support posts 2 arranged outside the structure plane of a main structure 60 including a frame 6 composed of posts and beams and in parallel to the structure plane and a damper-integrated brace 5 disposed between the support posts 2 and 2 adjacent to each other. The support post 2 is vertically separated into the plurality of support post members 21, 22 and 23, insulation devices 3 which permit the horizontal relative movement between the vertically separated support post members 21, 22 and 23, respectively, are disposed therebetween and joint beams 4 are arranged between the support post members 22 and 22 (23 and 23) adjacent to each other horizontally inside the structure plane.

Description

  The present invention, for example, is constructed in parallel to the surface of the main structure such as an existing or new concrete structure, steel structure and the like, and constitutes a vibration control reinforcement frame for controlling and reinforcing the main structure, The present invention relates to a strut restraining device in a seismic reinforcing frame that enhances the effectiveness of a damper of a damper-integrated brace installed between struts adjacent in the horizontal direction in the construction plane.

  For example, an anti-seismic reinforcement frame constructed in contact with the surface of the main structure for the purpose of imparting seismic performance or vibration control performance to the existing main structure such as a concrete structure. Basically, there are struts arranged in the horizontal direction in the construction surface, a damper-integrated brace built between the braces and a damper integrated in the brace body, and a bridging beam constructed between the adjacent strut members. (See Patent Document 1).

  As shown in FIG. 3 of Patent Document 1, each support column is composed of a plurality of support members separated in the vertical direction, and between the support members separated in the vertical direction, relative horizontal movement between them is allowed, and insulation with low horizontal rigidity is provided. A device (laminated rubber bearing or sliding bearing) is interposed, and the damper-integrated brace is laid between strut members of adjacent struts so as to straddle between layers.

  In order to make the main structure and the seismic strengthening frame integral with each other so that when the main structure undergoes interlayer deformation, the tethered beam follows the interlayer deformation so that the main structure and the seismic strengthening frame are integrated. While being installed, it is joined to the main structure (paragraph 0066 of Patent Document 1). The insulating device is interposed between the vertically adjacent struts so that the struts maintain a vertical state during relative movement between the struts adjacent in the horizontal direction in the composition plane. FIG. 3 of Patent Document 1 is FIG. 11 attached to this specification.

  When an earthquake occurs in the horizontal direction of the main structure (seismic reinforcement frame) and interlaminar deformation occurs in that direction, it is joined to the slabs etc. on each floor of the main structure. The connecting beam and the column material joined to the connecting beam relatively move following the main structure (FIG. 3 of Patent Document 1), and are installed between the adjacent column materials in the horizontal direction in the composition plane. The brace damper expands and contracts to generate a damping force and absorb vibration energy.

Japanese Patent No. 4038472 (Claim 1, paragraphs 0013 to 0026, FIGS. 1 and 3)

  In Patent Document 1, when an interlayer deformation in the horizontal direction in the structural surface of the seismic reinforcement frame is carried out, the insulating device interposed between the upper and lower strut members undergoes shear deformation, so that the upper and lower strut materials remain parallel to each other. As a result, the axial force is applied to the damper of the brace and a damping force is generated in the damper (FIG. 3 of Patent Document 1).

  However, in Patent Document 1, it is allowed that the support material positioned on the insulation device is lifted from the support material positioned below the support material so that the tensile force is not applied to the rubber constituting the insulation device (laminated rubber). For this reason (paragraph 0071 of Patent Document 1, FIG. 5), the upper end portions of the column members positioned on both sides in the horizontal direction in the structural surface of the seismic reinforcement frame are not restricted in the vertical direction or the horizontal direction. With the relative movement in the horizontal direction, as shown in FIG. 12 of the present case, it is assumed that the film moves relatively upward (lifts up) in the vertical direction.

  In FIG. 12, when the upper end of the column member 23 located at the uppermost portion of the column 2 on the left side in the horizontal direction in the composition plane moves relatively upward in the vertical direction and when it moves relatively downward (causes subduction). Although shown, the column member 23 of Patent Document 1 tends to be lifted mainly from the connected state of the insulating device. In FIG. 12, the floating state and the sinking state are indicated by broken lines. The alternate long and two short dashes line does not lift or sink, and shows the situation when moving horizontally.

  Originally, only the behavior of the relative movement in the horizontal direction is expected for the support material (FIG. 3 of Patent Document 1), but the relative expansion in the vertical direction is accompanied, so that the amount of expansion and contraction of the damper becomes smaller than the assumed amount, It may happen that the damper cannot exhibit sufficient energy absorption capability.

  For example, in FIG. 3 of Patent Document 1 (FIG. 11 of the present case), as shown in FIG. 12 of the present case, when the strut member positioned at the top of the left side in the horizontal direction in the composition plane is relatively moved from the stationary state to the right side. If the upper end portion of the strut member moves upward, the shrinkage amount of the brace connected to the upper end portion becomes smaller than the original shrinkage amount, so that the effectiveness of the damper is lowered and the energy absorption effect is also lowered. Similarly, if the strut material located at the top of the left side in the horizontal direction in the composition plane moves relative to the left side from a stationary state, if the upper end of the strut material moves downward, the brace connected to the upper end of the brace Since the extension amount is smaller than the original extension amount, the effectiveness of the damper is reduced accordingly.

  FIG. 13 shows a model of the damping control frame 1 of Patent Document 1 in the case where each column 2 is composed of four column members 21, 22, and 23. Between the columns 2 and 2 adjacent to each other in the horizontal direction in the composition plane, a connecting beam 4 for connecting the columns 2 and 2 to each other and joining the main structure is installed. In this model, the hysteresis characteristics in each layer of the damper built in the brace 5 installed between the support columns 2 and 2 located in the horizontal intermediate portion (center side from the end portion) in the composition plane indicated by the thick line are shown in FIG. -(A) to (d) show the hysteresis characteristics in each layer of the damper built in the brace 5 installed between the columns 2 and 2 located on both sides (ends) in the horizontal direction in the construction plane, which are also indicated by bold lines. It is shown in FIGS. 15- (a) to (d).

  14 and 15 (a) is a brace damper erected between the first and third floors, (b) is a brace damper erected between the third and fifth floors, and (c) is the fifth and seventh floors. The brace damper constructed between the floors, (d) shows the hysteresis characteristics of the brace damper constructed between the seventh and ninth floors. As shown in FIG. 14, the brace damper located in the middle portion in the horizontal direction in the composition plane forms a spindle-shaped loop having an area of a load-deformation curve from the lower layer to the uppermost layer, whereas in the horizontal direction in the composition surface. As shown in FIG. 15, the brace damper located at the end shows a tendency that the upper floor and the curve (loop) are crushed.

  As far as FIG. 15 is seen, the dampers in the braces from the first to third floors to the fifth to seventh floors of the braces erected on the horizontal ends (both sides) in the composition plane have a spindle-shaped loop. It can be seen that while the energy absorbing ability as a damper is exhibited, the damper in the braces on the 7th to 9th floors has a history curve collapsed and hardly exhibits the energy absorbing ability. On the other hand, as shown in FIG. 14, the brace damper erected in the middle part in the horizontal direction in the construction surface is smaller in the area from the 1-3th floor to the 5-7th floor on the 7th-9th floor. It can be seen that it draws a loop and demonstrates its energy absorption capability.

  From the comparison between FIG. 14 and FIG. 15, it is presumed that the brace dampers located in the upper layer portion on both sides in the horizontal direction in the composition plane cannot exhibit their original energy absorbing ability. The difference between the hysteresis curves in FIG. 14 and FIG. 15 is that, as described above, the struts located on both sides in the horizontal direction in the plane are constituted, and the upper end portion of the strut material located at the top is vertical along with the relative movement in the horizontal direction. In particular, it is considered to be caused by the relative movement upward in the vertical direction.

  In view of the above background, the present invention provides an anti-seismic reinforcement frame for damping and reinforcing a main structure, such as an existing structure, and constitutes the frame and is located at the uppermost part of the columns on both sides in the horizontal direction in the frame. The present invention proposes a restraint device for a strut that increases the effectiveness of a brace damper connected to the strut material.

A restraint device for a column in a seismic retrofitting frame according to claim 1 is arranged outside and parallel to the main surface of the main structure having a frame made of columns and beams, and spaced apart from the ground. Or, it is equipped with a damper-integrated brace that is built between a strut that is erected on the foundation and a strut that is adjacent in the horizontal direction in the construction plane and that incorporates a damper in the brace body.
The struts are separated into a plurality of strut members in the vertical direction, and an insulating device that allows relative horizontal movement between the strut members separated vertically is interposed between the strut members adjacent in the horizontal direction in the construction surface. In the seismic reinforcement frame for the seismic reinforcement of the main structure in which the connecting beam is installed,
Constructed around the struts located on both sides in the horizontal direction in the structural surface of the seismic reinforcement frame, and allowing the relative movement in the horizontal direction of the top of the strut material located at least on the top of the strut, in the vertical direction It is a constituent requirement that the movement is restricted.

  The structure including the main structure is, for example, an existing concrete structure (including reinforced concrete structure and steel reinforced concrete structure), a steel structure, and includes both a building structure and a civil structure. The main structures to which the seismic retrofit frames are joined include building columns, beams, slabs, foundations, etc., as well as bridge girders, piers, footings, etc. The main structure is mainly a part of a reinforced concrete structure, but may be unreinforced concrete or mortar.

  The joint part of the main structure and the seismic reinforcement frame is not limited. For example, old and new slabs, beams (girder), columns, foundations, etc., or any combination of these depending on the construction position of the additional structure However, the seismic reinforcement frame is constructed with the slabs, beams, etc. constituting the seismic reinforcement frame joined to the surface of any part of the main structure. Regardless of the time of construction of the seismic reinforcement frame for the main structure, in addition to the construction of the seismic reinforcement frame immediately after construction of the main structure, such as jointing with the main structure, the construction of the main structure When it is completed, there is a need to reinforce the main structure during use.

  The seismic retrofit frames are arranged parallel to the surface of the main structure, are erected on the ground or on the foundation in the horizontal direction within the surface of the structure, and separated into a plurality of support members in the vertical direction. An insulating device that is interposed between the struts and the struts that are separated vertically and that allows relative horizontal movement between them, and a bridge beam that connects between the struts adjacent to each other at the same level, and existing It is comprised from the said brace constructed between the support | pillar materials in the construction surface of a flame | frame.

  There are cases where the seismic reinforcing frame is constructed outside the main structure, in contact with the main structure, or at a distance from the structure. As described above, the bridging beam is joined to the main structure while being installed between adjacent strut members (paragraph 0066 of Patent Document 1), so that the main structure and the vibration-damping reinforcement frame are integrally structured. Make the seismic reinforcement frame follow the body deformation.

  Each strut is composed of a total of two strut materials, the bottom strut material fixed on the ground or the foundation and the upper strut material positioned thereon, as shown in FIG. 11 (FIG. 3 of Patent Document 1). As shown, it may be composed of a total of three or more strut materials, that is, a lowermost strut material and two or more upper strut materials positioned thereon.

  The strut material located at the bottom is fixed to the ground or foundation, the strut material located above the bottom is indirectly connected to the main structure, and the connecting beam connecting the struts is joined to the main structure indirectly. Be joined and behave with the main structure. Although it is assumed that the strut material located above the bottom is directly joined to the main structure, the unity between the strut material and the main structure is improved, and the seismic force from the main structure is controlled by the seismic reinforcement frame. It is effective to join the connecting beam to the main structure (frame).

  Specifically, the damper-integrated brace (brace) is located between the struts arranged at intervals in the horizontal direction and any strut material constituting any strut, and above or below the strut material. Inclined between the columns constituting the columns adjacent to both sides of the column and installed symmetrically with respect to any of the columns.

  Since the brace is installed symmetrically with respect to one of the columns, a tensile force or a compressive force acting on the brace installed on a certain layer as shown by an arrow in FIG. In the end, it is transmitted to the ground or the foundation, so the struts that make up the seismic reinforcement frame will ultimately bear the tensile and compressive forces, and the proof strength (strength) of the struts is smaller than when processing. There is an advantage that the cross section of the support is small.

  The brace bears an axial force at the time of relative deformation between the strut members of different levels in the horizontal direction in the structural plane when the seismic reinforcement frame is deformed between layers. It is installed between the supporting struts. In this relationship, one end of the brace is connected to the joint of the strut material with the frame or connecting beam, or the joint of the connecting beam to the strut material, of the strut materials adjacent in the horizontal direction in the construction plane. The other end is connected to the joint portion of the other strut member with the frame or the connecting beam, or the joint portion of the connecting beam to the strut member.

  When the main structure is to be deformed in the plane by the seismic force, the strut material that is integrated with the main structure as shown by a two-dot chain line in FIG. It is separated from the strut material immediately below it, and an insulating device that allows relative horizontal movement between the two strut materials is interposed between the strut materials, so that the strut material above the bottom strut material is Moves relative to the strut material directly below.

  The brace is built between the strut material integrated into the main structure and the connecting beam near it, and the strut material adjacent to the strut material immediately below or directly above and the connecting beam near it. Along with the relative horizontal movement of the upper and lower support members, the material expands or contracts, and a damper generates a damping force corresponding to the amount of expansion or contraction, or the speed at the time of expansion or contraction, and absorbs vibration energy. At the same time, the damping force generated by the damper acts on the main structure from the support members and the connecting beams integrated with the main structure, so that the swing of the main structure is suppressed.

  As shown in FIG. 11, when the separated upper and lower support members move horizontally relative to each other in the horizontal direction of the main structure, the axial force from the damper acts on the support members to which the braces are connected. However, the reaction force against the axial force acting on the lowermost support member is borne by the ground or foundation.

  In addition, the reaction force against the axial force acting on the strut material above the bottom is borne by the main structure to which the strut material is connected via the connecting beam, so the axial force from the damper causes excessive force on the strut material. The situation where the bending moment and the shearing force are applied is avoided, and the possibility that each separated strut material falls and the possibility of causing excessive stress on the leg portion and the top portion of the strut material is eliminated. Since the possibility of causing excessive stress on the legs and the top of the support material is eliminated, the support material itself does not necessarily have a strength capable of resisting the axial force from the damper.

  In particular, the brace is connected to both sides in the horizontal direction in the construction surface like the support material to which the brace is connected at an intermediate position between the lowermost support material and the uppermost support material. Since the axial force from the braces located on the same line is substantially cancelled, almost no bending moment and shearing force due to the axial force from the damper act on the support material.

  Part of the seismic force input to the main structure is joined to the main structure and transmitted to the brace from the support material to which the brace is connected. Eventually, braces are connected and transmitted to the ground from the bottom strut material fixed to the ground and foundation, and are borne. Since a part of the seismic force is borne by the braces and finally borne by the ground, the seismic force that the main structure should bear is reduced, so the safety of the main structure against the seismic force is improved.

  Even if the brace bears part of the seismic force, the struts and connecting beams that make up the seismic reinforcement frame do not share the seismic force input to the main structure with the main structure. The upper strut member behaves together with the main structure and causes relative movement between the strut member directly below, thereby acting on the main structure with the damping force generated by the damper. For this reason, it is only necessary that the strut and the connecting beam be able to receive the reaction force against the axial force received from the brace damper that resists the seismic force from the ground, foundation, or main structure. There is no need to resist the force.

  As a result of the axial force from the damper acting on the strut material to which the brace is connected, the vertical component of the axial force is transmitted to the strut material adjacent to the top and bottom through the insulation device, but the strut material adjacent to the top and bottom The horizontal component of the axial force is not transmitted to the vertically adjacent strut members within the range in which the insulating device can be horizontally deformed. In addition, as described above, since the support material itself does not necessarily have a strength capable of resisting the axial force from the damper, the support material and the connecting beam have the strength and rigidity enough to supplement the strength and rigidity of the main structure. It is not necessary, and the cross section can be reduced as compared with the case where the seismic force is shared with the main structure.

  If the struts and connecting beams that make up the seismic reinforcement frame share the seismic force with the main structure, they may be damaged by resisting the seismic force in the event of a large earthquake. It is not necessary to resist the seismic force over a long period, and the rigidity of the seismic retrofit frame itself can be reduced by reducing the cross section of the seismic force with the main structure. Because it can be flexibly deformed against earthquakes, it is avoided to be damaged.

  In claim 1, the support device for the support column is "constructed around the support columns positioned on both sides in the horizontal direction in the structural surface of the seismic retrofitting frame". If it is constructed separately from the seismic retrofitting frame (Fig. 1), it uses a part of the seismic retrofitting frame (posts, etc.) (Figs. 2 to 4) or is incorporated into the seismic retrofit frame. It is said that there is a case where it is constructed in a form (FIGS. 5 and 6). 1 to 4 correspond to a specific case of claim 2 described later, and FIGS. 5 and 6 correspond to a specific case of claim 3.

  Of the struts that make up the seismic reinforcement frame, the struts that the restraint device mainly restrains are “struts that are located on both sides in the horizontal direction in the construction surface”, and are not intended to exclude struts that are located on both sides. For this reason, the restraining device may be constructed with respect to the “posts positioned on both sides in the horizontal direction in the construction surface” and the support columns positioned inside thereof. It is the same as in claim 4 that the struts targeted by the restraining device include struts other than “the struts located on both sides in the horizontal direction in the composition plane”. It may be constructed between the support | pillar material of the support | pillar located in the inside and the support | pillar located in the inside.

  “The strut material positioned at the top of the strut” is a strut material positioned at least at the top of the plurality of struts constituting the strut, and is “at least”. In addition to the supporting strut material, it also includes a strut material positioned in the other intermediate portion in the height direction.

  “Horizontal relative movement of the top of the strut material” means that when the seismic reinforcement frame is subjected to interlayer deformation in the horizontal direction in the main plane of the main structure, the seismic reinforcement frame and strut material Horizontal relative movement that occurs between the top of The restraint device permits the horizontal movement of the top of the column member with respect to the seismic reinforcement frame, while restraining the vertical movement that can occur with the relative movement (claim 1).

  The reason why the restraint device allows the horizontal movement of the top of the column material is to allow the seismic reinforcement frame to freely cause interlayer deformation following the interlayer deformation in the in-plane direction of the main structure. This is because, if the restraint device does not allow relative movement of the top of the column material, the seismic reinforcement frame itself is hindered from free interlayer deformation.

  “Vertical movement” includes “upward movement (lifting)” and “downward movement (sinking)”. As described above, the insulation device interposed between the column members of the column that constitutes the vibration control reinforcement frame Since it is in a state that can be lifted from the lower column material (paragraph 0071 of Patent Document 1), the column material is likely to move upward with respect to the column material adjacent to the lower side. "Movement" mainly means "upward movement (lift)".

  The restraint device restrains the vertical upward movement and downward movement of the top of the column material, so that the lifting and sinking as shown by the broken line in FIG. 12 is eliminated, and the structure of the main structure as shown by the two-dot chain line In principle, the top portion of the support material can be relatively moved only in the horizontal direction at the time of inward interlayer deformation. “In principle” means that some vertical relative movement may be allowed due to horizontal relative movement. By restricting the direction of movement of the top of the strut material during inter-layer deformation in principle, it is limited to the horizontal direction, giving the brace damper the original expansion and contraction that matches the inter-layer deformation of the main structure, and improving the effectiveness of the damper Thus, the energy absorbing ability of the damper can be effectively exhibited.

  As described above, the struts of the struts constituting the seismic reinforcement frame are connected to each other via an insulating device such as a laminated rubber bearing, but the insulating device itself is not fixed to the lower strut material, so Adjacent struts are likely to lift (move upward) from the lower struts, and are not likely to cause downwards (sink). For this reason, it is sufficient for the restraining device to basically restrain the lifting (upward movement) with respect to the top portion of the support material to be restrained in the vertical relative movement.

  Specifically, the restraint device is a column member standing on the ground or on the foundation around the support column that should “restrain vertical movement while allowing relative movement in the horizontal direction”, and the column member A beam member erected between the top and the top of the column material positioned at the top, and interposed between the beam member and the top of the column material, and allowing horizontal relative movement of the top of the column material It comprises an insulating device. In addition to this, the frame material spanned between the main structure and the seismic reinforcement frame is interposed between the frame material and the seismic reinforcement frame. In some cases, the insulating device may allow relative movement.

  In the former case (Claim 2), the beam member is erected between the plurality of column members erected around the column to be restrained through the top of the column member (FIG. 1), and the column There is a case where it is constructed between one or a plurality of pillar members erected on the side of the head and the top of the pillar material at the top of the pillar (FIG. 2).

  In any case, the insulation device allows relative movement in the horizontal direction with respect to the beam member at the top of the column material when the seismic reinforcement frame is subjected to interlayer deformation following the interlayer deformation in the in-plane direction of the main structure. However, since the beam member restrains the relative movement in the vertical direction, the brace connected to the strut material can be moved only in the horizontal direction as shown by a two-dot chain line in FIG. There will be no lifting or sinking at the edges.

  In the case of claim 2, the beam member mainly presses down the top of the support material downward via an insulating device disposed under the beam member, thereby preventing the support material from rising up. When the top of the column material is about to sink, the insulation device is connected to the top of the column material, so that the insulation device can bear the tensile force when the column material top sinks. Can be prevented from sinking.

  Since the column member constituting the restraint device according to claim 2 is constructed separately from the seismic reinforcement frame, the reaction force when the beam member restrains the top of the uppermost column member from rising or sinking and sinking is the ground Or the foundation will bear.

  As shown in FIG. 6, the frame material of claim 3 is joined to the main structure at a part on the main structure side, and a part of the vibration control reinforcement frame at a part on the vibration control reinforcement frame side, for example, A part of the column material or a portion protruding from the column material to the main structure side (projecting part 24) is placed in a state in which the upward movement in the vertical direction is restricted through an insulating device. Like the beam member of claim 2, the frame material works to push down a part of the vibration-damping reinforcement frame downward via the insulation device. Therefore, the insulation device is arranged under the frame material and is controlled under the insulation device. Part of the seismic reinforcement frame enters (Fig. 6).

  According to the third aspect, the frame material is laid between the main structure and the seismic reinforcement frame, and an insulating device is interposed between the bottom of the frame material and any part of the seismic reinforcement frame (FIG. 5). , FIG. 6), when the seismic reinforcement frame is subjected to interlayer deformation following the interlayer deformation in the in-plane direction of the main structure, the frame material itself does not move relatively (relative deformation), and the state before the interlayer deformation Try to maintain (form).

  The insulation device supports the seismic reinforcement frame underneath it while allowing the relative movement in the horizontal direction relative to the frame material while restraining the vertical relative movement (mainly upward movement (lifting)). Since the top portion of the brace is held so as to be movable only in the horizontal direction, the end of the brace connected to the support member does not rise or sink.

  In the third aspect of the present invention, a part of the frame material on the side of the seismic reinforcement frame is in a state of restraining upward movement of a part of the seismic reinforcement frame, such as a column member, Since a part of the seismic reinforcing frame such as the supporting material of the seismic reinforcing frame is pressed downward, the lifting of the supporting material is prevented. When the strut material is about to sink, the insulation device is connected to the strut material, etc., so that the insulation device can bear the tensile force when the strut material sinks. Can be prevented.

  As a result, in claim 3, since a part of the seismic reinforcement frame is restrained by the frame material, the brace end does not rise or sink, so that, as in the case of claim 2, in FIG. The brace connected to the right side of the brace contracts when it moves relative to the right side and expands when it moves relative to the left side. Therefore, the damper built in the brace may generate a damping force corresponding to the amount of contraction and extension. It becomes possible. The damper may generate a damping force corresponding to the relative movement amount generated when the brace contracts and extends, and may generate a damping force corresponding to the relative speed during the relative movement.

  In Claim 3, the frame material which comprises a restraint device is constructed ranging over between the main structure and the vibration control reinforcement frame, and the frame material joined to the main structure is a part of the vibration control reinforcement frame (including the column material). The main structure bears the reaction force when the frame material restrains the lifting of the seismic reinforcement frame or the lifting and sinking.

  In the second and third aspects, the top of the column material to be constrained as described above or a part of the seismic reinforcement frame may be mainly restrained against the upward movement in the vertical direction. Alternatively, the frame material may be in a state in which the top of the column material is pressed at least from above, and the insulating device located below the beam member or the like is not necessarily connected to the top of the column material. Since the insulating device is only required to relatively move the top of the column material in the horizontal direction, an elastic sliding bearing or the like is used for the insulating device in addition to the laminated rubber bearing and sliding bearing as shown in the figure. The insulating device may be connected to the top of the support material.

  As shown in FIGS. 7 to 10, the support device for the support is also installed between the support members adjacent to each other in the horizontal direction on both sides in the horizontal direction of the structure of the vibration control reinforcement frame, and the vertical between the support members It may be made of a tensile material that restrains relative movement of directions in directions separated from each other.

  Tensile material is the upper strut located when the struts adjacent to each other in the horizontal direction are moving relative to each other in the horizontal direction during the inter-layer deformation of the seismic reinforcement frame following the inter-layer deformation of the main structure. While the material is freely moved relative to the lower support material in the horizontal direction, the upper support material functions to suppress the upward movement of the lower support material. In order to allow horizontal movement of the upper strut material, the tension material is given a function that can be expanded and contracted in the axial direction, but in order to prevent the upper strut material from rising when stretched, it is limited to extend beyond a certain amount. The

  The tensile material is restricted from being lifted within a certain amount during expansion and contraction in the axial direction, thereby suppressing lifting of the upper support material. Limiting the amount of elongation within a certain amount means that when the tensile material exceeds a certain amount of elongation, the relative movement in the axial direction between the members constituting the tensile material is reduced with pressure oil (oil) or the like. Coil springs, disc springs, ring springs, etc. that use a damper that is restrained (locked) by stopping the flow of fluid (controlling the flow rate) or that does not expand beyond a certain amount Made possible by using.

  When the tension member is a damper, when the strut material located on the upper side tries to move relative to the lower strut material in the horizontal direction, the tensile material stretches in the axial direction while increasing the amount of expansion. By restricting the flow rate of fluid such as oil, the amount of extension is restricted, and relative movement in the horizontal direction is allowed while preventing the upper strut material from being lifted. Even when the tension material is a spring, when the upper strut material tries to move relative to the lower strut material in the horizontal direction, the tension material stretches in the axial direction and increases in extension. By increasing the restoring force, the amount of expansion is limited by itself, and the horizontal relative movement is allowed while preventing the upper strut material from being lifted.

  When using a damper, it is possible to obtain a damping force when the tensile material is extended, and when using a spring, it is possible to expect a restoring force when the tensile material is extended. In addition to being used alone, they may be used in combination.

  In either case, when the seismic reinforcement frame is subjected to interlayer deformation following the interlayer deformation in the in-plane direction of the main structure, the tensile material allows horizontal movement relative to the beam member at the top of the column material. However, by restraining the relative movement in the vertical direction, as shown by a two-dot chain line in FIG. 12, the top of the support material can be moved only in the horizontal direction, so that the end of the brace connected to the support material Does not cause any lift.

  As a result, in FIG. 12, the brace connected to the support member contracts when it moves relative to the right side and expands when it moves relative to the left side. It is possible to generate a damping force. The damper may generate a damping force corresponding to the relative movement amount generated when the brace contracts and extends, and may generate a damping force corresponding to the relative speed during the relative movement.

  FIG. 16 shows a damper 52 in each brace 5 only when the seismic reinforcing frame 1 having the brace 5 extending over the two-layer frame 6 is joined to the main structure 60 of the eight-layer structure shown in FIG. And the energy absorption amount difference (analysis result data) by the damper 52 in each brace 5 when the restraining device 8 of the present invention is added.

  The amount of energy absorbed by the damper 52 is a value calculated from the area of the loop of the hysteresis curve representing the load-deformation relationship as shown in FIGS. 14 and 15, and the horizontal axis represents the layer of the main structure 60 that the brace 5 straddles. In addition, the construction section in the in-plane direction of the seismic reinforcement frame 1 is shown, and the vertical axis represents the amount of energy absorption in multiples of 98 J (converted to SI unit of tf · cm). FIG. 16 shows the results when the model of the restraint device 8 of the type shown in FIGS. 1 and 2 is used.

  In FIG. 1 and the like, an example is shown in which there are six erection sections of the brace 5 sandwiched between the adjacent struts 2 and 2 of the seismic reinforcement frame 1, but the numbers at the end of the horizontal axis in FIG. It refers to the position (on the elevation, from the left or from the right). In FIG. 16, the energy absorption amount by the damper 52 of the seismic reinforcement frame 1 alone is indicated by a broken line (broken line) having a square point. When the restraint device 8 is added, the energy absorption amount by the damper 52 is indicated by a triangular point. This is indicated by a broken line (solid line).

  As shown in FIG. 16, in the entire damping control frame 1, the amount of energy absorbed by the damper 52 in the brace 5 installed in the upper layer, particularly in the uppermost layer is lower than the damper 52 in the brace 5 installed in the lower layer. I understand that.

  However, in the case of only the seismic reinforcement frame 1 shown by the broken line (dotted line) having a square point, the energy absorption amount by the dampers 52 on both sides in the in-plane direction is extremely small, whereas the broken line having a triangular point ( In the case with the restraining device 8 indicated by a solid line), it can be seen that there is little or no decrease in the amount of energy absorbed by the dampers 52 on both sides in the in-plane direction. That is, it can be seen that the energy absorption effect by the dampers 52 on both sides in the in-plane direction of the seismic reinforcement frame 1 is effectively exhibited by installing the restraining devices 8 on both sides in the in-plane direction of the seismic wall frame 1.

Ensuring the amount of energy absorption by the dampers 52 on both sides in the in-plane direction of the seismic retrofitting frame 1 is the purpose of adding the restraining device 8 of the present invention, and that the purpose is sufficiently achieved from the analysis result data. It is confirmed. Since the analysis model can be simplified by conspicuously showing the effect of adding the restraint device 8 to the analysis result, it can be said that the model can be easily constructed (modeled), and the reliability of the analysis result is high. .

  In the first to third aspects of the present invention, the column restraining device allows the relative movement in the horizontal direction of at least the top of the column member positioned at the uppermost portion of the column positioned on both sides in the horizontal direction in the structural surface of the seismic reinforcement frame. In order to constrain the movement in the direction, it is not necessary to raise at least the end of the brace connected to the column member when the interlayer deformation in the in-plane direction of the vibration control reinforcement frame is performed. As a result, the brace connected to the uppermost strut member can be contracted or expanded purely when it moves relatively in the horizontal direction, so that the damper built in the brace can respond to the amount of contraction and extension. Damping force can be generated.

  In claim 4, the support device for the support is installed between the support members adjacent to each other in the horizontal direction on both sides in the horizontal direction of the seismic reinforcement frame, and the vertical direction between the support members is separated from each other. It is made of a tension material that restrains the relative movement of the seismic reinforcement. By limiting the amount to within a certain amount, it is possible to suppress the lifting of the upper support material.

As a result, the top of the strut material can be moved only in the horizontal direction, and the brace end connected to the strut material will not be lifted, so the brace is purely contracted or stretched. A damping force corresponding to the amount of contraction and extension can be generated in the damper built in the brace.

When the strut restraining device is composed of column members standing in parallel on both sides of the struts located on both sides in the horizontal direction of the seismic reinforcement frame, and beam members erected between the tops of both column members It is the perspective view which showed the relationship between the damping control frame and the restraint device. From the beam member installed between the column member that is erected on one side of the column and the top of the column material that is positioned at the top, the column restraint device is located on both sides in the horizontal direction in the frame of the seismic reinforcement frame It is the perspective view which showed the relationship between the seismic control reinforcement frame | frame in the case where it becomes, and a restraint device. It is the enlarged view which showed the mode of the connection with the beam member and support | pillar material in the top part of the restraint apparatus in FIG. It is the enlarged view which showed the mode of the connection with the beam member and support | pillar material in the intermediate part of the restraint apparatus in FIG. Seismic control reinforcement frame and restraint in the case where the strut restraining device is composed of a frame material that spans between the main structure and the seismic control reinforcement frame, and an insulating device interposed between the frame material and the seismic control reinforcement frame It is the perspective view which showed the relationship of the apparatus. FIG. 6 is an enlarged view of a middle portion in the height direction of the vibration control reinforcement frame in FIG. 5. A seismic reinforcement structure in which the strut restraining device is constructed between the struts adjacent to each other in the horizontal direction in the strut located on both sides in the horizontal direction in the structural surface of the seismic retrofit structure, and is made of a tensile material using a coil spring. It is the perspective view which showed the relationship of the restraint apparatus. It is an enlarged view of the restraint apparatus part in FIG. Seismic retrofit frame and restraint when the strut restraining device is constructed between the struts adjacent to the top and bottom in the strut located on both sides in the horizontal direction in the structural surface of the seismic retrofit frame and made of tensile material using dampers It is the perspective view which showed the relationship of the apparatus. FIG. 10 is an enlarged view of a restraining device portion in FIG. 9. When the struts that make up the seismic retrofitting frame are made of three struts, an interlayer deformation occurs in the seismic retrofitting frame, and the struts above the bottom layer move relative to each other in the horizontal direction. FIG. It is the elevation which showed the state of the rising or sinking assumed to the support | pillar material located in the uppermost part at the time of the interlayer deformation | transformation of a seismic reinforcement frame. FIG. 13 is an elevation view showing a model of a seismic reinforcing frame composed of four struts for confirming the influence on the energy absorption capacity of the damper due to lifting and sinking generated in the uppermost struts shown in FIG. is there. (A)-(d) is the load-deformation curve figure which showed the hysteresis characteristic of the damper in the brace of each layer constructed inside from the horizontal direction both sides in a composition surface. (A)-(d) is the load-deformation curve figure which showed the hysteresis characteristic of the damper in the brace of each layer constructed by the horizontal direction both sides in a construction surface. When the main structure is an eight-layer structure shown in FIG. 1 and the like, the energy absorption amount in each two-layer unit is installed in the in-plane direction by a damper built in a brace extending over two layers as shown in the figure. It is the graph collectively represented for every area.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows an arrangement of a main structure 60 having a frame 6 composed of columns 61 and beams 62 arranged parallel to the surface of the main structure 60, and standing on the ground or the foundation with a space between each other in the horizontal direction in the surface of the structure. A main structure having a damper-integrated brace (hereinafter referred to as a brace) 5 built between a brace body 51 and a damper 52, which is provided between the supporting pillar 2 to be installed and the supporting pillars 2 and 2 adjacent in the horizontal direction in the composition plane. The structural example of the restraint apparatus 8 of the support | pillar in the seismic reinforcement frame 1 for carrying out the seismic reinforcement of 60 is shown. The columns 61 and beams 62 of the main structure 60 are shown in FIG.

  The column 2 is divided into a plurality of column members 21, 22, 23 in the vertical direction, and an insulating device that allows relative horizontal movement between the column members 21, 22 separated vertically and between the column members 22, 23. 3 is interposed, and a connecting beam 4 is installed between the strut members 21 and 22 (22 and 23) adjacent to each other in the horizontal direction in the composition plane to integrate the vibration control reinforcement frame 1 and the frame 6 of the main structure 60 together. The Hereinafter, among the support members 21 to 23 constituting the support column 2, the support material positioned at the lowermost portion is referred to as 21, the support material positioned at the uppermost portion is referred to as 23, and the support material positioned at an intermediate portion thereof is referred to as 22.

  Since the connecting beam 4 only needs to work to connect a plurality of support columns 2 and 2 arranged in the horizontal direction in the composition plane, the connection beam 4 is joined so as to abut against the side surface in the composition direction of the support column 2; It does not matter whether or not the columns 2 are joined so as to overlap the side surfaces in the direction of the construction surface.

  The frame 6 of the main structure 60 is a reinforced concrete structure, a steel reinforced concrete structure, a steel structure with an ALC plate attached to the outer wall, etc., or a steel pipe concrete structure. The supporting column 2 and the connecting beam 4 may be reinforced concrete, steel reinforced concrete, steel frame, or steel pipe concrete. In the case of concrete, there are cases where it is made of cast-in-place concrete or precast concrete. The seismic reinforcement frame 1, that is, the column 2 and the connecting beam 4 constituting the seismic reinforcement frame 1 may be reinforced concrete, steel reinforced concrete, or steel. In the example shown in FIGS. 1 and 2 and subsequent figures, the main structure 60 is an eight-story (eight-layer) structure (building), and the seismic reinforcement frame 1 joined to one side of the main structure 60 in the span direction. Shows a case where the brace 5 is provided over two layers of the main structure 60.

  As shown in FIG. 1 or the like, the support material 21 located at the bottom is fixed to the ground or the foundation 10 (11) of the existing building, and the support materials 22 and 23 located above the support material 21 at the bottom are connected. It behaves together with the frame 6 by being indirectly joined to the frame 6 via the beam 4. In FIG. 1 and the like, a footing as the foundation 10 is formed at the lower end portion of the support material 21 located in the ground, and the footing is buried in the ground to fix it to the ground. The method is not asked. The foundation 10 includes a pile 11.

  Since the brace 5 is installed in a frame (frame) composed of the columns 2 and 2 and the connecting beams 4 and 4 while being inclined with respect to the horizontal and vertical directions, one end of the brace 5 is adjacent to the column in the horizontal direction in the frame. Of the members 21, 21 (22, 22), one column member 21 (22) or the connecting beam 4 near the column member 21 (22) is connected (connected), and the other end is connected to the other column member 21 ( 22 (21), or directly above (or just) the supporting beam 22 (21) or the connecting beam 4 near the supporting column 22 (21).

  When three or more struts 2 and 2 constituting the vibration-damping reinforcement frame 1 are arranged in the horizontal direction in the composition plane as shown in FIGS. One of the support members 21 (22, 23) constituting one of the support members 2 located in the middle portion, and above or below the support member 21 (22, 23), on both sides of the support member 2 It is inclined between the supporting columns 21 (22, 23) constituting the adjacent supporting columns 2, 2, and is installed symmetrically (axisymmetric) with respect to any of the supporting columns 2.

  Although not shown, for example, when one support column 2 is composed of two support members 21 and 22, one end of the brace 5 is connected to the lowermost support member 21 and the connecting beam 4, and the other end is adjacent to the horizontal direction. It is connected to the column material 22 and the connecting beam 4 directly above the lowermost column material 21. In FIG. 1 and the like, an example in which the main structure 60 is a building such as an apartment house extending over a plurality of layers and the frame 6 has a flat surface is shown. The form of the building or the use of the existing building is not limited.

  As shown in FIG. 11, when one strut 2 is composed of three or more strut members 21, 22, and 23, the construction layer of the brace 5 extends over two or more layers, so one end of the lowermost brace 5 is 2 As in the case of the book, it is connected to the lowermost support member 21 and the connecting beam 4, and the other end is connected to the support member 22 and the connecting beam 4 immediately above the lowermost support member 21 adjacent in the horizontal direction. One end of the brace 5 in the upper layer is connected to the support member 22 and the connecting beam 4 immediately above the lower support member 21, and the other end is connected to the support member 23 immediately above the support member 22 adjacent to the support member 22. Connected to beam 4. The brace 5 immediately above is connected in the same manner.

  Except for the uppermost support member 23, each of the support members 21 and 22 is basically a frame in order to exhibit the effect of energy absorption by the damper 52 accompanying the input of seismic force to the brace 5 and its axial deformation. In order to follow the inter-layer displacement of 6, the height is equivalent to one layer or several layers according to the joining position to the frame 6 via the connecting beam 4. The uppermost support member 23 only needs to be able to be connected to the frame 6 via the connecting beam 4 and to connect the brace 5, and does not necessarily have to have a height of one layer. The height of the material 23 is kept to the extent of the connecting beam 4 or larger.

  When the support members 21 and 22 have a height of several layers, one brace 5 is installed over several layers, so that the amount of deformation of the braces 5 due to the interlayer displacement is larger than that in the case of one layer. Since it becomes large, there exists an advantage which the energy absorption efficiency by the damper 52 increases.

  The brace 5 is composed of brace bodies 51, 51 that are axially movable relative to each other, and a damper 52 that is built into one brace body 51 and connected to the other brace body 51, at the end of the brace bodies 51, 51. The integrated brackets 53 and 53 are connected to, for example, a gusset plate 7 integrated with a base plate or the like joined to the column 2 or the connecting beam 4 of the seismic reinforcement frame 1. The brace 5 suppresses the shaking of the frame 6 by the damper 52 generating a damping force when the brace bodies 51 and 51 move relative to each other by the compressive force and the tensile force acting between both ends thereof. As the damper 52, a damper using a viscous fluid such as an oil damper (hydraulic cylinder) is used.

  As the insulating device 3, a laminated rubber bearing or an elastic sliding bearing or a sliding bearing with a deformation limiting mechanism for preventing separation from the support members 21, 22 (22, 23) is used. When a laminated rubber support is used as the insulating device 3, in order to prevent the rubber from being pulled and broken, the insulating device 3 is separated from the upper and lower columns 21 as shown in FIGS. 22 (22, 23) is joined to one of the support members 21 (22), and the other is connected (supported) to the other support member 22 (23) so as to be relatively movable in the vertical direction. “Relative movement in the vertical direction” means that the column material 21 (22) can be pulled out freely, and the upper column material 22 (23) can be pulled out downward, so that the lower column material 21 can be pulled out downward. (22) says that it can float freely.

  The insulating device 3 fixes, for example, the upper flange 31 of the flanges 31 and 32 integrally formed on the upper and lower sides of the laminated rubber to the lower surface of the upper support member 22 (23) and the lower flange 32 to the lower support member. 3 and 6, the shear key 33 joined to the lower surface of the flange 32 is formed in the cavity 2a formed from the upper surface of the lower support member 21 (22) without being fixed to the upper surface of the lower support member 21 (22). By being fitted and engaged in the horizontal direction, it is connected to the support material 22 (23) so as to be relatively movable in the vertical direction. The shear key 33 is joined to the upper surface of the upper flange 31 and is fitted into the cavity 2a formed from the lower surface of the upper support member 22 (23), and the lower flange 32 is connected to the lower support member 21 (22). ) May be fixed on the upper surface.

  When the shear key 33 is fitted in the cavity 2 a, the vertical load from the support material 22 (23) above the insulating device 3 is through the flanges 31 and 32 and the laminated rubber, or through the flanges 31 and 32 and the laminated rubber and the shear key 33. It is transmitted to the lower support member 21 (22).

  FIG. 1 shows a plurality of column members 81, 81 in which a restraining device 8 is erected in parallel around a column 2 positioned on both sides in the direction (horizontal in the plane) of the seismic reinforcement frame 1. The beam member 82 is installed between the column members 81, 81 through the top of the upper support member 23, and is interposed between the beam member 82 and the top of the support member 23. The specific example in the case of comprising the insulating device 9 that allows relative movement is shown. This insulating device 9 also uses an elastic sliding bearing, a sliding bearing, etc., in addition to the laminated rubber bearing, in the same manner as the insulating device 3 interposed between the support members 21 and 22 (22, 23) adjacent vertically.

  The column members 81 and 81 are erected in a region where they do not interfere with the column 2 of the seismic reinforcement frame 1, and the lower ends are joined to the foundation 10 or the pile 11. The foundation 10 and the pile 11 that support the column member 81 may be constructed in the ground separately from the foundation 10 and the pile 11 that support the seismic reinforcement frame 1 or the foundation 10 and the like of the seismic reinforcement frame 1. is there. In the example of FIG. 1, since the beam member 82 is installed between at least two column members 81, 81, at least two column members 81, 81 are paired.

  In the case of FIG. 1, the lower end portion of the column member 81 is fixed to the ground or the foundation 10, so that a reaction force upward in the vertical direction is borne on the ground or the foundation 10. The foundation 10 may be an existing one or a new one.

  In FIG. 1, the restraint device 8 is constructed around the pillars 2 positioned on both sides in the horizontal direction in the structural surface of the seismic reinforcement frame 1, but the restraint device 8 is constructed only around one of the pillars 2 on one side. In addition to the case, it may be constructed around at least one of the columns 2 and the column 2 positioned inside both sides. The column member 81 and the beam member 82 constituting the restraint device 8 may be a steel structure or a reinforced concrete structure (including precast concrete). The column member 8 may also be constructed while being connected (joined) in the axial direction when it is a single continuous member. The two column members 81, 81 and the beam member 82 installed between the head portions thereof constitute a frame having a ramen structure.

  In FIG. 1, the beam member 82 is installed only between the tops of the column members 81 and 81. However, the beam member 82 is intermediate in the height direction (axial direction) of the column members 81 and 81 as shown in FIG. There is also a case where it is erected between clubs. In that case, the beam member 82 in the intermediate portion in the height direction passes through any portion of the support member 22 in the intermediate portion in the height direction, a portion protruding from the side surface of the support member 22 (protrusion portion 41), or the connecting beam 4. Are installed between the column members 81, 81.

  Further, in FIG. 1, column members 81 and 81 are erected on both sides of the support column 2 so as to sandwich the support columns 2 positioned on both sides in the horizontal direction in the structural surface of the vibration control reinforcement frame 1. In order to avoid interference, both the column members 81 and 81 are erected in the direction swung with respect to the construction surface of the vibration-damping reinforcement frame 1 (outside the construction surface).

  An upper flange 91 and a lower flange 92 for connecting to or joining to the beam member 82 and the column member 23 are integrated with the upper and lower ends in the axial direction of the insulating device 9, respectively. When the insulating device 9 is a laminated rubber bearing or the like, the laminated rubber of the main body undergoes shear deformation due to horizontal force. Therefore, the upper flange 91 is basically integrally joined to the lower surface of the beam member 82 by a bolt or the like, and the lower flange. As shown in FIG. 1, 92 is integrally joined by bolts or the like to the top of the support member 23 or the upper surface of the connecting beam 4 installed at the top of the support member 23. However, since the insulating device 9 itself may be relatively movable in the horizontal direction with respect to the beam member 82 and the column member 23 (connecting beam 4), the length direction of the beam member 82 and the length of the connecting beam 4, respectively. It may be supported (connected) slidably in the direction (horizontal direction).

  FIG. 2 shows a column member 81 in which the restraining device 8 is erected in parallel with the columns 2 positioned on both sides in the horizontal direction in the structural surface of the damping control frame 1, and the top of the column material 23 at the top of the column 2 The specific example in the case where it comprises the beam member 82 constructed between the top part of the column member 81 and the insulation apparatus 9 interposed between the front-end | tip part of the beam member 82 and the top part of the support | pillar member 23 is shown. . 3 is an enlarged view of the beam member 82 portion in FIG. 2, and FIG. 4 is an enlarged view of a portion of the projecting member 83 projecting horizontally from the intermediate portion in the height direction (axial direction) of the column member 81 to the column 2 side. is there. In FIG. 2, the column member 81 is erected in the same plane as the surface of the seismic reinforcement frame 1, but this is not always necessary. May be erected in the other direction (out-of-plane direction).

  In FIG. 1 and FIG. 2, the vibration control reinforcement is made up of the column material 22 located at the middle in the height direction of the column 2 located on both sides in the horizontal direction in the frame of the vibration suppression reinforcement frame 1 and the column material 23 located at the top. A projecting portion 41 for joining to the main structure 60 is projected in the in-plane direction of the frame 1. The protrusion 41 protrudes from the support members 22 and 23 toward the outside in the in-plane direction on the extension line of the connecting beam 4. For example, when the slab 63 for joining the frame 6 of the main structure 60 and the seismic reinforcement frame 1 is increased, the joining beam 4 is used for joining the end of the slab 63 and the joining beam 4. As a result, the protrusion 41 is formed, but the protrusion 41 may not be formed regardless of the presence or absence of the slab 63.

  As shown in FIG. 4, the projecting member 83 in FIG. 2 projects from the column member 81 toward the projecting portion 41 of the connecting beam 4, and between the lower surface of the projecting member 83 and the projecting portion 41 of the connecting beam 4. An insulating device 9 is interposed between the two. The overhang member 83 is installed between a member that projects (projects) in a direction other than the connecting beam 4 like the horizontal frame 84b of the frame member 84 in FIG. 6, and the insulating device 9 is interposed therebetween. There is also.

  In FIG. 2, since there is only one column member 81 constituting the restraint device 8, the restraint device 8 (column member 81) becomes a cantilever and may have poor bending rigidity in preventing the column 2 from lifting up. Therefore, the beam member 82 and the projecting member 83 are projected from the top of the column member 81 and the intermediate portion in the height direction so as to suppress the lifting of the column 2 at a plurality of positions in the height direction of the column member 81. . However, the protruding member 83 does not necessarily have to be extended depending on the degree of rigidity of the column member 81 alone. In that case, the beam member 82 may be installed only from the top of the column member 81, and the top of the uppermost support member 23 may be pressed downward by the insulating device 9 disposed on the lower surface of the beam member 82.

  In FIG. 5, the restraint device 8 is interposed between the main structure 60 and the vibration control reinforcement frame 1, and the frame material 84 is interposed between the frame material 84 and the vibration control reinforcement frame 1, and the horizontal between them A specific example in the case of the insulating device 9 that allows relative movement in the direction is shown. FIG. 6 is an enlarged view of the frame member 84 in FIG.

  For example, the frame member 84 protrudes from the vertical frame 84a joined in contact with the pillar 61 or the wall of the main structure 60 and the upper end portion and the lower end portion of the vertical frame 84a toward the seismic reinforcement frame 1 side. As shown in the figure from the horizontal frame 84b, the U-shaped or L-shaped surface is formed, and the end of the horizontal frame 84b on the side of the vibration-damping reinforcement frame 1 is connected to the structure of the vibration-damping reinforcement frame 1 via the insulating device 9. Any part of the column 2 located on both sides in the in-plane direction is pressed downward.

  Although the frame member 84 may hold down the top of the support member 23 located at the uppermost part of the support column 2, in the drawing, the slab in which the horizontal frame 84 b of the frame member 84 is beaten on the uppermost floor and the intermediate floor of the main structure 60. 63. The main structure from the intermediate portion in the height direction of the strut member 22 located in the middle portion in the height direction and the strut member 23 located in the uppermost portion in the relationship of being joined to the main structure 60 while entering the lower surface of 63. The horizontal frame 84 b is positioned on the protruding portion 24 protruding to the body 60 side, and the insulating device 9 is disposed between the lower portion of each horizontal frame 84 b and the protruding portion 24. 5 and 6, the insulating device 9 is disposed between the lower surface of the horizontal frame 84b and the upper surface of the protruding portion 24, and the flanges 91 and 92 are joined to each other by bolts or the like.

  In FIGS. 5 and 6, in order to suppress the deformation of the horizontal frame 84b when the horizontal frame 84b receives an upward reaction force from the protrusions 24 of the support members 22 and 23, it is between the horizontal frame 84b and the vertical frame 84a. A brace 84c is erected. Here, like the brace 5 of the seismic damping reinforcement frame 1, a damper 84d is incorporated in the brace 84c so that energy can be absorbed when the horizontal frame 84b is deformed relative to the vertical frame 84a.

  7 to 10, the restraint device 8 is installed between the support members 21 and 22 (22 and 23) adjacent to each other in the support column 2 positioned on both sides in the horizontal direction in the structural surface of the vibration control reinforcement frame 1. A specific example in the case of the tension member 85 that restrains the relative movement in the direction in which the column members 21 and 22 (22 and 23) are separated from each other in the vertical direction will be described. FIGS. 7 and 8 show examples in which the tension member 85 is a spring such as a coil spring or a disc spring, and FIGS. 9 and 10 show dampers for the brace 5 and the frame member 84 of the vibration damping reinforcement frame 1. An example of a damper such as a hydraulic cylinder similar to 84d is shown.

  When the tension member 85 is a coil spring or the like shown in FIGS. 7 and 8, the natural length state is obtained when no horizontal relative movement occurs between the vertically adjacent support members 21 and 22 (22 and 23). Alternatively, it is in a state where it has been stretched to some extent and stretches when relative movement occurs in the horizontal direction, and after reaching a stretch amount exceeding a certain amount, it reaches a state where no further stretch occurs. Prevent (block) the lifting of (23).

  The fact that the material does not extend after a certain amount of extension means that a tensile spring 85 (coil spring, etc.) is used, for example, by using a hardening spring (hardening spring) whose spring constant increases as the amount of deformation increases, or a certain amount. This can be achieved by using a spring that partitions during stretching. In this case, after the spring (coil spring) has been stretched to a certain extent, it cannot be stretched any further, so that lifting is prevented. In this case, the spring constant of the tension member 85 (coil spring) is set to a size that can be extended up to the horizontal relative movement amount allowed between the support members 21 and 22 (22 and 23). The allowable horizontal relative movement amount is also a horizontal deformation amount such as a shear deformation amount of the insulating device 9.

When the tension member 85 is the damper shown in FIGS. 9 and 10, the tension member 85 (damper) is pulled when there is no relative movement in the horizontal direction between the strut members 21 and 22 (22 and 23) adjacent to each other in the vertical direction. When the force is not applied, or is already in a state of bearing a certain tensile force, when the relative movement occurs in the horizontal direction, the tensile force is borne, and after the tensile force exceeding a certain amount is borne, By setting the state in which no further tensile force is borne, the upper support material 22 (23) is prevented from being lifted (blocked). When the tensile material 85 (damper) does not bear a tensile force exceeding a certain amount, when the tensile force exceeds a certain value, the hydraulic oil in the cylinder that constitutes the damper moves between the hydraulic chambers sandwiching the piston, etc. This is accomplished by limiting or stopping the fluid flow rate.

1 …… Seismic control reinforcement frame, 2 …… Posts, 21, 22, 23 …… Post material, 2a …… Cavity, 24 …… Protrusion,
3 …… Insulator, 31 …… Upper flange, 32 …… Lower flange, 33 …… Shear key,
4 …… Bridge beam, 41 …… Protruding part,
5 ... Damper integrated brace, 51 ... Brace body, 52 ... Damper, 53 ... Bracket,
6 ... frame, 60 ... main structure, 61 ... pillar, 62 ... beam, 63 ... slab,
7 …… Gusset plate,
8: Restraint device, 81: Column member, 82: Beam member, 83 ... Projecting member, 84 ... Frame material, 84a ... Vertical frame, 84b ... Horizontal frame, 85 ... Tensile material,
9: Insulating device, 91 ... Flange, 92 ... Flange,
10 ... foundation, 11 ... pile.

Claims (5)

The main structure with a frame consisting of pillars and beams is arranged outside the surface of the main structure in parallel with the surface of the structure, and is adjacent to the pillars that are erected on the ground or on the foundation with a space between each other. It is equipped with a damper-integrated brace that is built between the struts,
The support column is divided into a plurality of support members in the vertical direction, and an insulating device that allows relative horizontal movement between the support members separated vertically is interposed between the support members adjacent to each other in the horizontal direction in the construction surface. In the seismic reinforcement frame for the seismic reinforcement of the main structure in which the connecting beam is installed,
Constructed around the struts located on both sides in the horizontal direction in the structural surface of the seismic reinforcement frame, and allowing the relative movement in the horizontal direction of the top of the strut material located at least on the top of the strut, in the vertical direction A strut restraining device in a seismic reinforcement frame characterized by restraining movement.   A column member standing on the ground or foundation around the column, a beam member constructed through the top of the column member and the top of the column material positioned at the top, and the beam member 2. The strut restraining device for a seismic retrofit structure according to claim 1, wherein the strut restraining device is interposed between the top portion of the strut member and allows the horizontal movement of the top portion of the strut member in a horizontal direction. .   The frame material spanned between the main structure and the seismic damping reinforcement frame, and is interposed between the frame material and any part of the damping control frame, and joined to the main structure, The strut restraining device in the seismic reinforcement frame according to claim 1, comprising an insulating device that allows horizontal relative movement between the two. The main structure with a frame consisting of pillars and beams is arranged outside the surface of the main structure in parallel with the surface of the structure, and is adjacent to the pillars that are erected on the ground or on the foundation with a space between each other. It is equipped with a damper-integrated brace that is built between the struts,
The support column is divided into a plurality of support members in the vertical direction, and an insulating device that allows relative horizontal movement between the support members separated vertically is interposed between the support members adjacent to each other in the horizontal direction in the construction surface. In the seismic reinforcement frame for the seismic reinforcement of the main structure in which the connecting beam is installed,
The struts located on both sides in the horizontal direction of the seismic reinforcement frame are installed between the strut members adjacent to each other in the vertical direction, and restrain the relative movement in the vertical direction between the strut members in the direction separating from each other. A strut restraining device for a seismic retrofit frame comprising a tensile material. The damper-integrated brace is located between the columns arranged at intervals in the horizontal direction, one of the columns constituting the column, and above or below the column, and on both sides of the column. Inclined between the supporting struts constituting the adjacent struts, and installed symmetrically with respect to any of the struts,
One end of the damper-integrated brace laid between the adjacent struts is connected to the joint of one strut material with the frame or connecting beam, or the joint of the connecting beam to the strut material, and the other end is 5. The other strut member is connected to a joint portion with a frame or a connecting beam, or a joining portion of a connecting beam with a strut member. A strut restraining device for seismic retrofitting frames.

Images