JP2010047933A - Damping reinforcement frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcement construction method which makes use of the existing substructure of a structure, which can perform control of preventing a horizontal load from exceeding the bearing capacity of the existing substructure even when the horizontal load acts on the structure, and which does not increase the load on the body of the structure. <P>SOLUTION: A reinforcement frame 2 is provided which is installed adjacent to the side 11 of the existing structure 1 and which is connected to the side 11. The post leg 2c of the reinforcement frame 2 is connected to the foundation surface G in either a position which is the furthermost from the existing structure 1 or a position which is the closest to the existing structure 1, and the lower joint section 2b of the reinforcement frame 2 in the other position is connected to the foundation surface G through the medium of a damping member 6. Because of this, the reinforcement frame 2, which is installed adjacent to the existing structure 1, can damp the turning moment generated by the horizontal load acting on the existing structure 1 by the damping member 6 which is connected to the lower joint section 2b on the foundation surface G, and the lower joint section 2b is positioned at predetermined distance from the post leg 2c of the reinforcement frame 2. Thus, a high degree of damping effect can be produced by implementing the optimization of the volume of the damping member 6 by leverage. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vibration damping reinforcement frame provided with a reinforcement frame that is installed adjacent to a side surface of an existing structure and is connected to the side surface by a connecting member interposed at a predetermined height from a base surface of the existing structure. .

  Conventionally, when reinforcing a structure such as a building against a horizontal load caused by an earthquake or a strong wind, reinforced concrete is wound around the column 111 of the structure 101 as a reinforcing material 122 as shown in FIG. A method of directly reinforcing the column 111 main body by attaching a steel frame, or a truss-like reinforcing material 133 or a single reinforcing material 144 made of steel or the like as shown in FIG. 12 or FIG. There has been a method of connecting and installing by projecting to the outside of the column 111 of 101. In such a conventional reinforcing method, in the case of FIG. 11, the width of the reinforcing member 122 is limited as long as the dimensions of the pillar 111 are determined. Therefore, it is difficult to significantly improve the column strength, and even if the column can be sufficiently reinforced, it is difficult to secure the horizontal strength without reinforcing the strength of the foundation 112 portion corresponding thereto.

  On the other hand, in the case of FIG. 12 and FIG. 13, since the horizontal projecting dimension of the leg portion of the truss-like reinforcing member 133 or the single reinforcing member 144 is increased, the outer side of the existing foundation structure 112 of the structure 101 is increased. In addition, it is necessary to newly install the newly installed foundation structure 112a separately, and when the newly installed foundation structure 112a receives a pulling force, the bulk and weight of the newly installed footing 113a are increased so as not to float. Countermeasures were required, resulting in further cost increases.

As described above, in the conventional reinforcement method that improves only the proof stress of the structure, considering the foundation structure and other factors, the cost may be enormous, and as a reinforcement method that has recently been adopted, vibration suppression and reinforcement There is a construction method. In this method, a damper member is incorporated in a part of a column main body of a structure (see Non-Patent Document 1 below), or a damper member is incorporated in the reinforcing members 133 and 144 in the examples of FIGS. (See, for example, Patent Document 2 below).
Japan Steel Structure Association, Steel Structure Collection, Vol.10, No.40 (issued in December 2003), pages 65-75 “Analysis of elasto-plastic response of Yamagata truss structure and introduction of stiffening members to column bases” Improvement of earthquake resistance by Shiro "Kato et al. JP 9-235890 A (refer to the gazette abstract)

  In the introduction of the stiffening member disclosed in Non-Patent Document 1, which is the first conventional example, a part of the member constituting the pillar 111 of the structure 101 is replaced with a damper member when applied to the one shown in FIG. Because it is necessary, construction was difficult unless it was a new construction, and application to existing structures was impractical. Further, in the vibration damping reinforcement structure disclosed in Patent Document 2 as the second conventional example, when applied to the structure shown in FIGS. 12 and 13, the inclination angle of the reinforcing member 133 or 144 or the horizontal distance on the foundation surface is used. Therefore, it is necessary not only to install the new foundation structure 112a at a position away from the existing foundation structure 112 of the structure 101, but also to install a damper member in the reinforcing member 133 or 144. As a result, although the generated axial force is suppressed to a certain level or less, the generated axial force of the reinforcing member 133 or 144 is transmitted to the column 111 of the structure 101, and the burden on the column 111 is increased. It was no different from the conventional method.

  Therefore, the present invention solves the problems of the conventional vibration damping and reinforcement structure, and can control the existing foundation structure so that it does not exceed the proof strength of the existing foundation structure even when a horizontal load is applied, while utilizing the existing foundation structure of the structure. And it aims at providing the vibration suppression reinforcement frame which can implement | achieve the reinforcement construction method which does not increase the burden to a structure main body.

  For this reason, the present invention provides a vibration damping reinforcement provided with a reinforcing frame that is installed adjacent to a side surface of an existing structure and is connected to the side surface by a connecting material interposed at a predetermined height from the base surface of the existing structure. In the frame, the column base portion of the reinforcing frame is connected to at least one of the farthest position and the closest position from the existing structure on the foundation surface, and the lower nodal portion of the other reinforcing frame is It is connected to the base surface via a damper member. The present invention also provides a vibration damping reinforcement frame provided with a reinforcement frame that is installed adjacent to a side surface of an existing structure and is connected to the side surface by a connecting member interposed at a predetermined height from the base surface of the existing structure. The column base portion of the reinforcing frame is connected at a position closest to the existing structure on the foundation surface, and one end of the lever member is connected to the lower node portion of the other reinforcing frame, and A damper member is interposed between an end and the base surface, and a fulcrum member is interposed between the end surface and the base surface at an intermediate portion of the lever member. The present invention is characterized in that all of the column base, the damper member, and the fulcrum member in the reinforcing frame are arranged in a plane projection plane of the existing foundation structure of the existing structure. Further, the present invention is characterized in that any of the column base part, the damper member and the fulcrum member in the reinforcing frame is disposed on the additional foundation structure integrated with the existing foundation structure of the existing structure, These are used as means for solving the problems.

  According to the present invention, vibration suppression reinforcement is provided with a reinforcing frame that is installed adjacent to a side surface of an existing structure and is connected to the side surface by a connecting material interposed at a predetermined height from the base surface of the existing structure. In the frame, the column base portion of the reinforcing frame is connected to at least one of the farthest position and the closest position from the existing structure on the foundation surface, and the lower nodal portion of the other reinforcing frame is By connecting to the foundation surface via the damper member, the reinforcing frame installed adjacent to the existing structure can receive the rotational moment generated by the horizontal load acting on the existing structure from the base of the column base of the reinforcing frame. Since it can be damped by a damper member connected to the lower node at a predetermined distance on the surface, it is greatly improved by optimizing the capacity of the damper member based on the principle of insulator It is possible to exhibit the Decay effect.

  Further, in the vibration-damping reinforcement frame provided with the reinforcement frame that is installed adjacent to the side surface of the existing structure and is connected to the side surface by a connecting material interposed at a predetermined height from the base surface of the existing structure, The column base of the reinforcing frame is connected to the base surface at a position closest to the existing structure, and one end of the lever member is connected to the lower node of the other reinforcing frame, and the other end of the lever member and the By installing a damper member between the base surface and a fulcrum member between the base member and the base surface at the intermediate portion of the insulator member, the reinforcing frame installed adjacent to the existing structure has the existing structure. The rotational moment generated by the horizontal load acting on the object is transferred to the damper member installed at the free end of the reinforcement frame from the lower node at a predetermined distance on the foundation surface through the lever member. As a result of optimizing the capacity of the damper member based on the principle of the lever, it is possible to exert a great damping effect, and the damper member is brought as close as possible to the column base part of the reinforcing frame. Therefore, even when the existing foundation structure is not sufficiently extended, the reinforcing frame can be reliably attached using the existing foundation structure.

  Furthermore, when all of the column base, the damper member, and the fulcrum member in the reinforcing frame are arranged in the plane projection plane of the existing foundation structure of the existing structure, each member of the reinforcement frame is used using the existing foundation structure. Since it can be housed compactly and installed, it is possible to easily attach a reinforcement frame by retrofitting even when there are restrictions on topography, and there is no need for reinforcement with a new foundation. In the case of ground that needs to be removed, it is economical because the cost of reinforcement can be greatly reduced because no new piles are required. Furthermore, when any of the column base part, the damper member and the fulcrum member in the reinforcing frame is disposed on the additional foundation structure integrated with the existing foundation structure of the existing structure, the horizontal direction of the existing foundation structure Even when the width is small, by installing the additional foundation structure, it is possible to secure a predetermined distance on the foundation surface from the column base portion of the reinforcing frame to the lower nodal portion and improve the damping effect of the damper member .

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of an essential part showing a first embodiment of the vibration-damping reinforcement frame of the present invention, FIG. 2 is a cross-sectional view of an essential part showing a second embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional view of a main part of a fourth embodiment of the present invention, FIG. 5 is a cross-sectional view of a main part of a fifth embodiment of the present invention, and FIG. FIG. 7 is a cross-sectional view of an essential part for explaining the difference from FIG. 7, FIG. 7 is a cross-sectional view of the essential part showing a sixth embodiment of the present invention, and FIG. FIG. 9 and FIG. 10 are explanatory views of moment balance of each part when a horizontal load is applied to the structure.

  As shown in the first embodiment of FIG. 1, the basic structure of the vibration-damping / reinforcing frame of the present invention is installed adjacent to the side surface 11 of the existing structure 1, and the side surface 11 and the foundation of the existing structure 1. In the vibration-damping / reinforcing frame including the reinforcing frame 2 connected by the connecting member 3 interposed at a predetermined height from the surface G, the column base portion 2c of the reinforcing frame 2 is at least on the foundation surface G at the existing structure. It is connected at either one of the position farthest from the object 1 or the closest position, and the lower node 2b of the other reinforcing frame 2 is connected to the base surface G via a damper member 6. And

  FIG. 1 is a cross-sectional view of a main part showing a first embodiment of the present invention. The existing footing 13 constituting the existing foundation structure 12 has a substantially trapezoidal cross section and is placed in the ground of the foundation surface G. The existing footing 13 is fixed to the existing piles 14 and 14 driven into the ground and buried in the ground. The existing footing 13 and the existing piles 14 and 14 are extended in a direction perpendicular to the plane of the drawing, but in the analysis of moment balance described later, for example, it is considered in the illustrated cross section. The pillar 11 which comprises the side surface of the existing structure 1 is attached to the existing footing 13, and is fixed. The existing footing 13 may have a substantially trapezoidal cross section, but may be substantially flush with the base surface G.

  When the cross-section of the existing footing 13 is substantially trapezoidal, an additional foundation 15 such as an oblique line is driven in the plane projection plane of the existing foundation structure 12, and the upper surface of the existing foundation structure 12 is substantially the same as the foundation plane G. Construct in the same plane. On the existing foundation structure 12 configured in this manner, the reinforcing frame 2 is installed adjacent to the pillar 11 constituting the side surface of the existing structure 1. The reinforcing frame 2 is composed of a truss-like structure having a substantially triangular longitudinal section. The longitudinal section does not obstruct a square or the like. The upper stigma 1 a of the pillar 11 of the existing structure 1 and the connection position 2 a at the upper end of the reinforcing frame 2 are connected by the connecting material 3. In the first embodiment, the column base 2c of the reinforcing frame 2 is connected to the base surface G at least at a position closest to the existing structure 1, and the lower node 2b at the farthest position is interposed via the damper member 6. Connected to the base plane G. The upper end 6 a of the damper member 6 is pivotally supported by the lower node portion 2 b of the reinforcing frame 2, and the lower end 6 b of the damper member 6 is pivotally supported by the base surface G.

FIG. 8 is a dimensional diagram of each part when a horizontal load is applied to the vibration-damping reinforcement frame of the present invention and the structure, and FIGS. 9 and 10 are explanatory views of moment balance of each part when the horizontal load is applied to the structure. Based on this, the behavior in the case of the structure of the reinforcing frame 2 of the first embodiment will be described. As shown in FIG. 8, when a horizontal external force is applied to the existing structure 1, the horizontal load borne by the existing structure 1 is P, and the horizontal load borne by the reinforcing frame 2 is Pf. When a tensile axial force N (FIG. 9) is generated in the member 6, there is a relationship of N = Pf · H / (LC). A force N of the same magnitude as the tensile force of the damper member 6 acts on the base surface G as a compressive force on the column base 2c. At this time, the reaction force generated at the position of the existing pile 14 immediately below the damper member 6 is defined as Rv. The overturning moment acting on the footing 13 due to the horizontal load P (acting from right to left on the page) is expressed as P · H where the height of the connecting portion 3 between the existing structure 1 and the reinforcing frame 2 is H. The Further, if the column axial force is W, the foundation weight is Wf, and the dimensions L and C are as shown in FIGS. 8 and 9, the condition that the foundation structure does not rise from the balance of moments around the fulcrum Z in FIG.
N ≦ {2L · Rv + L · (W + Wf) −P · H} / (LC)
Since the reaction force Rv needs to be equal to or greater than zero, Rv = 0 is set as follows.
N ≦ {L · (W + Wf) −P · H} / (LC) (1)

Next, conditions that do not exceed the allowable compressive strength Ra of the foundation (in the case of piles) are shown. Referring to FIG. 10, the overturning moment acting on the existing footing 13 due to the horizontal load P (acting from the left to the right of the paper surface) is P · H, and the compression member N is generated in the damper member 6. When the reaction force generated at the position of the existing pile 14 immediately below the damper member 6 is Rv, the existing foundation (pile) is obtained from the balance of moments around the fulcrum Z in FIG. Conditions that do not exceed the allowable compressive strength Ra are:
N ≦ {2L · Rv−L · (W + Wf) −P · H} / (LC)
Since the reaction force Rv needs to be equal to or less than Ra, Rv = Ra and the following equation is obtained. N ≦ {2L · Ra−L · (W + Wf) −P · H} / (L−C) (2)

  From the above, in designing the vibration-damping reinforcement frame of the present invention, if the maximum proof stress of the damper member is designed so as to satisfy the above formulas (1) and (2), it exceeds the proof strength of the foundation structure of the structure. Therefore, the structure can be reinforced without reinforcing the existing foundation structure 12 (reinforcement beyond the plane projection plane of the existing foundation structure 12 on the foundation surface G). For example, when L = 3m, H = 15m, C = 1.5m, W = 50tf, Wf = 200tf, P = 30tf, allowable compressive strength Ra of existing pile Ra = 240tf, N ≦ 200tf from equation (1), Since N ≦ 160 tf from (2), the maximum proof stress of all the damper members may be designed to be 160 tf or less.

Enumerating the effects of the present invention configured as described above,
(1) In the conventional construction method, it is necessary to install a new foundation structure that receives the reaction force of the reinforcing frame 2, but in the first embodiment of the present invention and Examples 2 to 3 described later, the existing foundation structure 12 is used. Since the reinforcing frame 2 can be installed by using it, the reinforcing cost can be greatly reduced, which is extremely economical. In particular, even in the case of ground where a new pile is required, it is not necessary to newly install a pile, and the effect is enormous. (2) Since the reinforcement work for the existing structure can be performed from the outside of the building, the construction is easy and the construction cost is low.
(3) Since the damper member is incorporated, even if an earthquake that is stronger than expected occurs, the energy absorption capacity of the damper member is exhibited, so that damage to the existing structure body can be minimized. . Even aftershocks, the progress of damage can be prevented by the energy absorption effect.
(4) Since damage to buildings can be minimized even in the event of a major earthquake, not only can direct damage to buildings be reduced, but the period until the building can be reused after an earthquake can be greatly reduced. Can minimize operating losses due to lost opportunities.
(5) Since most of the vibration energy such as earthquakes is absorbed by the damper member, if only the damper member that has no more energy absorption capacity is replaced after the earthquake, etc., the existing structure will be retained. The horizontal strength can be restored.
(6) Since the damper member is installed at a position close to the ground (base surface), its maintenance, inspection and replacement are very easy.
(7) Even if the dimensions of the foundation structure of the existing structure are small to some extent, it is possible to exert a great damping effect by optimizing the capacity of the damper member using the lever principle, so the applicable range is expanded. can do.

  FIG. 2 is a sectional view of an essential part showing a second embodiment of the present invention. In the second embodiment, the column base 2c of the reinforcing frame 2 is connected to the foundation plane G at a position farthest from the existing structure 1, and the lower node 2b at the nearest position is connected to the foundation via the damper member 6. Connected with surface G. The upper end 6 a of the damper member 6 is pivotally supported by the lower node portion 2 b of the reinforcing frame 2, and the lower end 6 b of the damper member 6 is pivotally supported by the base surface G. 1 differs from that of the first embodiment of FIG. 1 in that the horizontal load from the existing structure 1 is transferred via the connecting member 3, and the column base 2c farthest from the existing structure 1 is moved. The vibration is damped by the damper member 6 interposed between the foundation surface G of the additional foundation portion 15 at the position closest to the existing structure 1 and swinging as the swing center. Both the lower node portion 2b and the column base portion 2c in the reinforcing frame 2 are pivotally supported in the plane projection plane of the existing foundation structure 12.

  FIG. 3 is a sectional view showing an essential part of a third embodiment of the present invention. The third embodiment differs from the first embodiment in FIG. 1 in that the damper member 6 is mounted differently. That is, in this embodiment, when the damper member 6 is interposed between the lower node portion 2b which is a free end portion of the reinforcing frame 2 and the upper surface of the additional foundation portion 15, the outer side of the reinforcing frame 2 on the lower node portion 2b side. The diagonal member is disposed in a linearly extended portion. In this case, since the damper member 6 is disposed at an inclination, the axial force generated in the damper member 6 is larger than that in the case where the damper member 6 is disposed vertically. Slightly inferior.

  FIG. 4 is a sectional view showing the principal part of a fourth embodiment of the present invention. In the fourth embodiment, the lower end 6b of the damper member 6 located farthest from the existing structure 1 is arranged outside the front end in the width direction of the existing footing 13 in the first embodiment shown in FIG. In the case where it is unavoidable, the extension base portion 15 is extended to the outside so as to be integrated with the tip of the existing footing 13, so that the lower end of the column base portion 2 c of the reinforcing frame 2 or the damper member 6 is added. The force from 6b is reliably transmitted to the existing footing 13.

  FIG. 5 is a sectional view showing an essential part of a fifth embodiment of the present invention. The fifth embodiment is a case where the lower end 6b of the damper member 6 located farthest from the existing structure 1 in FIG. 4 has to be disposed outside the front end of the existing footing 13 in the width direction. The extension foundation part 15 is provided with a new pile 14a in the extension foundation part 15 in the extension foundation part 15 extended to the outside so as to be integrated with the tip of the existing footing 13. Although the cost increase is unavoidable, the additional foundation 15 is integrated with the existing footing 13 so that it can resist the pulling force from the reinforcing frame 2, so as shown in FIG. It is more advantageous in terms of drawing process and cost than the case where the new footing 13a or the new pile 14a is provided.

  FIG. 6 is a cross-sectional view of an essential part for explaining the difference from the vibration damping reinforcement frame of the present invention. In this example, the reinforcing frame 2 is not able to take a sufficient width in the horizontal direction of the existing foundation structure 12, that is, the existing footing 13 as described in the embodiment of FIGS. If the horizontal distance between the column base 2c and the lower node 2b having the damper member 6 disposed at the lower end cannot be secured sufficiently, for example, the lower end 6b of the damper member 6 is pivotally supported for installation. A new new footing 13a and a new pile 14a are provided, and both of them are integrated by a strong new reinforcing beam 16. In the present embodiment, the new footing 13a and the new reinforcing beam 16 or the new pile 14a are provided, and the cost increase is inevitable. However, even if the width of the existing foundation structure 12 is small, the reinforcing frame 2 has a sufficient damping effect. It can be expected.

  FIG. 7 is a longitudinal sectional view of an essential part showing a sixth embodiment of the present invention. The thing of this Example 6 differs from the thing of each Example mentioned above fundamentally, and the insulator member 4 is arrange | positioned. By disposing the lever member 4, even when the width of the existing foundation structure 12 such as that shown in FIG. 6 is small, for example, the sufficient damping effect of the reinforcing frame 2 can be obtained without providing the new footing 13a and the new pile 14a. Can be expected. That is, the column base portion 2c of the reinforcing frame 2 is connected on the base plane G at a position closest to the existing structure 1, and one end of the lever member 4 is connected to the other lower node portion 2b. A damper member 6 is interposed between the other end of the member 4 and the base surface G, and a fulcrum member 5 is interposed between the base surface G in the intermediate portion 4 c of the lever member 4.

  The operation will be described with reference to the illustrated example. The column base 2c of the reinforcing frame 2 is disposed at a position closest to the existing structure 1. Therefore, the lower nodal portion 2 b of the reinforcing frame 2 is disposed at a position farthest from the existing structure 1. An insulator member 4 extends from the lower node portion 2b toward the column base 2c, and a damper member 6 near the column base 2c is connected to the free end of the insulator member 4 and the upper surface of the additional foundation 15 of the existing footing 13. Between. Therefore, the horizontal load from the existing structure 1 is transferred to the reinforcing frame 2 via the connecting member 3, and the lever member 4 is also an intermediate fulcrum member as the reinforcing frame 2 swings around the column base 2c. Oscillating motion is performed with the lower node 2b side of 5 as the fulcrum. As a result, the lever member 4 is swung with the free end side as an action point. The damper member 6 disposed at the action point portion can attenuate the vibration by suppressing the movement of the lever member 4 on the free end side.

  In the sixth embodiment, the reinforcement frame 2 installed adjacent to the existing structure 1 by retrofitting causes the rotational moment generated by the horizontal load acting on the existing structure 1 to be applied to the foundation surface G from the column base 2c of the reinforcement frame 2. Can be attenuated by the damper member 6 installed at the free end of the lower node 2b at a predetermined distance from the lower node 2b through the lever member 4, so that the capacity of the damper member 6 can be optimized based on the principle of the lever. In addition to being able to exhibit a greater damping effect, the damper member 6 can be brought as close as possible to the column base 2c of the reinforcing frame 2, and even if the width of the existing foundation structure 12 is not sufficient, the existing foundation structure can be surely 12 can be used to attach the reinforcing frame 2.

  As mentioned above, although the Example of this invention was described, within the meaning of this invention, the side surface of the existing structure including the connection form (fastening to the volt | bolt embedded in the foundation footing, etc.) to the existing foundation structure is demonstrated. Shape, type, shape of reinforcing frame (in addition to the vertical cross-sectional triangle of the embodiment, a suitable cross-sectional shape such as a quadrangle may be adopted), type, shape of connecting material, type, connection between side surface of existing structure and reinforcing frame Height from the base surface of the material and connection form (preferably a shaft support form is adopted), existing footing in the reinforcing frame or connection support form via the column base part and the damper member and the fulcrum member to the additional base part (Considering the existing footing or the bearing part newly installed on the extension base), the shape and type of the damper member (steel material, hydraulic system, friction system, viscoelastic system, etc.) (Preferably can be used) and the number (preferably disposed at either the furthest position or the nearest position from the existing structure on the foundation surface, but the member connected to the column base is also a damper member. As well as the maximum strength (set so that the foundation does not lift or exceed the allowable compression strength of the foundation due to the reaction force from the frame), the shape, type and shape of the insulator member Connection form (preferably a shaft support form) with the lower nodal part or fulcrum member or damper member of the reinforcing frame, the shape and type of the fulcrum member, and the connection form to the existing foundation structure including the lever member or the extension base part (suitable) Shaft configuration) and installation position (determined appropriately by the capacity of the damper member, etc.), installation configuration of the extension foundation structure integrated with the existing foundation structure, and the reinforcement frame Binding form (linked form via column base or damper elements of which are the same as those of the connection form of the existing infrastructure or additional base portion described above) for the like can be appropriately selected. In addition, the specifications described in the examples are merely examples in all respects and should not be interpreted in a limited manner.

It is principal part sectional drawing which shows 1st Example of the damping reinforcement frame of this invention. It is principal part sectional drawing which shows 2nd Example of the vibration suppression reinforcement frame of this invention. It is principal part sectional drawing which shows 3rd Example of the damping reinforcement frame of this invention. It is principal part sectional drawing which shows 4th Example of the damping reinforcement frame of this invention. It is principal part sectional drawing which shows 5th Example of the damping reinforcement frame of this invention. It is principal part sectional drawing for demonstrating the difference with the vibration suppression reinforcement frame of this invention. It is principal part sectional drawing which shows 6th Example of the damping reinforcement frame of this invention. It is a dimension figure of each part when a horizontal load acts on the vibration suppression reinforcement frame and structure of the present invention. It is analysis explanatory drawing of the conditions from which a foundation does not surface. It is an analysis explanatory drawing of the compression allowable yield strength of a foundation pile same as the above. It is explanatory drawing of the example of introduction of the stiffening member which is a 1st prior art example. It is explanatory drawing about the vibration suppression reinforcement structure which is a 2nd prior art example. It is explanatory drawing of the modification of a 2nd prior art example equally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Existing structure 1a Column head 2 Reinforcement frame 2a Reinforcement frame connection position 2b Lower joint part of reinforcement frame 2c Column base 3 Connection material 5 Support member 6 Damper member 6a Damper member upper end 6b Damper member lower end 11 Column (side surface) of existing structure )
12 Existing foundation 13 Existing footing 14 Existing pile 15 Additional foundation 16 New reinforcement beam G Foundation surface

Claims (4)

A vibration damping reinforcement frame provided with a reinforcement frame that is installed adjacent to a side surface of an existing structure and is connected to the side surface by a connecting member interposed at a predetermined height from a base surface of the existing structure. Are connected at least one of a position farthest from the existing structure and a position closest to the existing structure on the foundation surface, and the lower node of the other reinforcing frame is connected to the bottom via the damper member. A vibration-damping reinforcement frame characterized by being connected to the base surface. A vibration damping reinforcement frame provided with a reinforcement frame that is installed adjacent to a side surface of an existing structure and is connected to the side surface by a connecting member interposed at a predetermined height from a base surface of the existing structure. The column base is connected to the base surface at a position closest to the existing structure, and one end of the lever member is connected to the lower node of the other reinforcing frame, and the other end of the lever member and the base surface And a damper member interposed between them and a fulcrum member interposed between the lever member and the base surface at an intermediate portion of the lever member. 3. The vibration-damping reinforcement frame according to claim 1, wherein all of the column base portion, the damper member, and the fulcrum member in the reinforcement frame are disposed in a plane projection plane of the existing foundation structure of the existing structure. The column base, the damper member, or the fulcrum member in the reinforcing frame is disposed on an additional foundation structure integrated with an existing foundation structure of an existing structure. Damping reinforcement frame.

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