JP5204076B2 - Seismic retrofit method and seismic retrofit structure for existing buildings - Google Patents

Description

  The present invention relates to a seismic retrofit method and a seismic retrofit structure for an existing building using a steel frame and a seismic control means.

  After constructing a layered seismic frame at a position spaced from the outer wall of the existing building by a predetermined distance in the out-of-plane direction so that the existing building and the seismic frame share the horizontal force, the existing building and the seismic frame There is a seismic strengthening method for existing buildings that connects the seismic frame to existing buildings via a connecting part that bypasses.

JP-A-9-203220

  In the seismic reinforcement method disclosed in Patent Document 1, an earthquake-resistant frame having a strong seismic resistance against vibration is built at a position spaced apart from the outer wall of an existing building by a predetermined distance in the direction of the surface, and a connecting portion is formed. It is a construction method that connects the seismic frame to the existing building, and it costs a lot to build the seismic frame, and it requires a lot of man-hours to build the seismic frame. It is difficult to shorten the construction period of earthquake-resistant structures that use earthquake-resistant frames. In addition, since a strong seismic frame is built at a predetermined distance from the outer wall of the existing building in the out-of-plane direction, a wide area is required to build the seismic frame, and it is difficult to secure the site. Can not be installed.

  An object of the present invention is to provide a seismic retrofit method and a seismic retrofit structure that is inexpensive, does not require a construction period, and does not require a large site.

The seismic damping reinforcement method according to the present invention requires a plurality of first steel frames made of steel columns and steel beams and parallel to the surface direction of the outer wall of the existing building, and the seismic reinforcement of the existing building. while building by at least one level-minute of the existing building at the location, one by at least one level-minute of the first steel frame, and the outer wall of successively fixed to the existing building via fastening means to the outer wall of an existing building A plurality of second steel frames that are integrated with the first steel frame, are made of a steel column and a steel beam and project from the first steel frame to the out-of-plane direction of the outer wall of the existing building, and are arranged in the surface direction. While constructing at least one layer of the existing building at the place where the seismic reinforcement of the existing building is required, the lower end of the steel column of the second steel frame constructed on the first floor part of the existing building, Along the outer wall of an existing building, they are lined up at a predetermined distance in the surface direction and Connected to a new foundation pile built on the ground separated by a predetermined distance in the out-of-plane direction of the outer wall of the building, and at least one layer of the second steel frame is sequentially connected to the first steel frame, Damping means for absorbing vibrations of the existing building are installed inside the first steel frame and inside the second steel frame .

As an example of the seismic reinforcement method of the present invention, any one of a seismic reinforcement brace and a steel brace is used as a seismic control means .

The seismic reinforcement structure according to the present invention is formed of a steel column and a steel beam, and at least one layer in parallel with the surface direction of the outer wall of the existing building at a place where the seismic reinforcement of the existing building is required. A plurality of first steel frames that are constructed in portions and fixed to the outer wall of the existing building by at least one layer through fixing means and integrated with the plurality of layers of the existing building, and steel columns and steel beams, constructed by at least one level-minute overhangs the out-of-plane direction of the outer wall of the existing building from the first steel frame at a location that requires Seismic reinforcement of existing buildings are formed from at least a first steel frame a plurality of second steel frame is integrated with their first steel frame are connected by hierarchical minutes, the vibration of their existing buildings are installed first and the inner steel frame in the inside of their second steel frame and an absorbing vibration control means, of existing buildings The lower end portion of the steel column of the second steel frame constructed on the floor portion is arranged at a predetermined distance in the plane direction along the outer wall of the existing building, and is separated by a predetermined distance in the out-of-plane direction of the outer wall of the existing building. It is connected to a new foundation pile built on the ground .

As an example of the vibration control reinforcement structure of the present invention, the vibration control means is one of a vibration control reinforcement brace and a steel frame brace .

According to the seismic damping reinforcement method according to the present invention, the first steel frame parallel to the surface direction of the outer wall of the existing building is placed at a level corresponding to at least one layer of the existing building at a place where the seismic reinforcement of the existing building is required. While building, at least one layer of the first steel frame is sequentially fixed to the outer wall of the existing building through fixing means, and the outer wall of the existing building and the first steel frame are integrated, so that the existing building Unlike conventional seismic strengthening methods that build a strong seismic frame at a predetermined distance away from the outer wall of the object, the construction of the seismic reinforcement structure is cost-effective and requires less man-hours. A seismic reinforcement structure can be installed. In the seismic retrofitting method, it is not necessary to separately secure a wide site for installing the seismic retrofit structure, and the seismic retrofit structure can be installed in an existing building where it is difficult to secure the site. This seismic retrofitting method installs seismic control means to attenuate the vibration of the existing building inside the first steel frame so that the vibration parallel to the surface direction of the outer wall of the existing building is inside the first steel frame. It is absorbed by the seismic control means installed in the building, and the seismic vibration generated in the existing building can be effectively suppressed by using the seismic control means.

In the seismic retrofitting method, the second steel frame projecting from the first steel frame to the out-of-plane direction of the outer wall of the existing building is at least one layer of the existing building at the place where the existing building needs seismic reinforcement. While constructing sequentially, at least one layer of the second steel frame is sequentially connected to the first steel frame, so a strong earthquake-resistant frame is constructed at a position spaced a predetermined distance from the outer wall of the existing building in the out-of-plane direction. Unlike the conventional seismic reinforcement method, the construction of the seismic reinforcement structure is not costly, and the seismic reinforcement structure can be installed in a short period of time with less man-hours. In the seismic retrofitting method, it is not necessary to separately secure a wide site for installing the seismic retrofit structure, and the seismic retrofit structure can be installed in an existing building where it is difficult to secure the site. The seismic retrofitting method installs seismic control means to attenuate the vibration of the existing building inside the second steel frame so that the vibration in the in-plane direction and the out-of-plane direction of the outer wall of the existing building is the second steel frame. It is absorbed by the vibration control means installed inside the frame, and the vibration generated in the existing building can be effectively suppressed by using the vibration control means.

The seismic retrofitting method is the first by connecting the lower end of the steel column of the second steel frame built on the first floor of the existing building to the newly built foundation pile (new foundation) built underground . Since 1 steel frame and 2nd steel frame are supported by foundation piles via steel columns, they are not inadvertently moved during vibration, and the vibration control installed inside these steel frames during vibration The seismic control function of the means functions sufficiently, and the vibration generated in the existing building can be reliably suppressed by using the seismic control means.

The seismic retrofitting method uses either seismic retrofit braces or steel braces , so that the vibrations generated in existing buildings are absorbed by the braces installed in the first and second steel frames. The vibration generated in the existing building can be reliably suppressed by using these braces.

  According to the seismic damping reinforcement structure according to the present invention, a plurality of first steel frames that are parallel to the surface direction of the outer wall of the existing building, and a plurality that project from the first steel frame to the outer surface direction of the outer wall of the existing building. The second steel frame, and the vibration control means installed on the inner side of the first steel frame and the inner side of the second steel frame, and the first steel frame is fixed to the outer wall of the existing building via the fixing means Because it is a structure that is fixed and integrated with multiple layers of an existing building, it differs from the conventional seismic reinforcement structure that builds a strong earthquake-resistant frame at a predetermined distance away from the outer wall of the existing building. In addition, the construction of the seismic reinforcement structure does not cost, and the seismic reinforcement structure can be installed in a short period of time with less man-hours. In addition, the seismic reinforcement structure, which is a structure in which the second steel frame is connected to the first steel frame and integrated with the first steel frame, is installed inside the first steel frame and the first steel frame. Similar to the seismic reinforcement structure having only the seismic control means, the construction of the seismic reinforcement structure does not cost, and the seismic reinforcement structure can be installed in a short time with less man-hours. The seismic retrofit structure does not need to separately secure a wide site for installing it, and can be installed in existing buildings where it is difficult to secure the site. In this seismic reinforcement structure, the vibration control means for attenuating the vibration of the existing building is installed inside the first steel frame so that the vibration parallel to the surface direction of the outer wall of the existing building It is absorbed by the vibration control means installed inside the building, and the vibration generated in the existing building can be effectively suppressed using the vibration control means. In addition, since the vibration control means that attenuates the vibration of the existing building is installed inside the second steel frame, the vibrations in the in-plane direction and the out-of-plane direction of the outer wall of the existing building are inside the second steel frame. It is absorbed by the seismic control means installed in the building, and the seismic vibration generated in the existing building can be effectively suppressed by using the seismic control means.

The seismic retrofit structure is connected to a new foundation pile (new foundation) in which the lower end of the steel column of the second steel frame built on the first floor of the existing building is built underground. Since the first and second steel frames are supported by the foundation via the steel columns, the steel frames do not inadvertently move during the vibration, and the vibration control installed inside the steel frames during the vibration The seismic control function of the means functions sufficiently, and the vibration generated in the existing building can be reliably suppressed by using the seismic control means.

Since either the seismic reinforcement brace or the steel brace is used as the seismic control means for the seismic retrofit structure, the vibration generated in the existing building is transferred to the first steel frame and the second steel frame. The installed braces can be absorbed, and the vibration generated in the existing building can be surely suppressed by using the braces.

The front view of the seismic damping reinforcement structure shown as an example. The side view of the seismic reinforcement structure of FIG. FIG. 3 is a top view of the vibration control structure of FIG. 1. The expansion perspective view of one seismic damping reinforcement structure. The enlarged front view of one 1st steel frame. The enlarged front view of one 2nd steel frame. Explanatory drawing of the seismic damping function by the damping control brace. Explanatory drawing of the seismic damping function by the damping control brace. Explanatory drawing of the seismic damping function by the damping control brace. Explanatory drawing of the seismic damping function by the damping control brace. The front view of the 1st steel frame which installed the damping control reinforcement brace of other examples. The front view of the 2nd steel frame which installed the damping control reinforcement brace of other examples. The front view of the 1st steel frame which installed the damping control reinforcement brace of other examples. The front view of the 2nd steel frame which installed the damping control reinforcement brace of other examples. The front view of the 1st steel frame which installed the damping control reinforcement brace of other examples. The front view of the 2nd steel frame which installed the damping control reinforcement brace of other examples. The perspective view of the 1st and 2nd steel frame which installed the steel brace. The perspective view of the 1st and 2nd steel frame which installed the steel brace. The perspective view of the 1st and 2nd steel frame which installed the steel brace. Explanatory drawing of the construction procedure of the damping control method shown as an example. Explanatory drawing of the construction procedure of the damping control method shown as an example. Explanatory drawing of the construction procedure of the damping control method shown as an example. Explanatory drawing of the construction procedure of the seismic damping reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic reinforcement reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic reinforcement reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic reinforcement reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic damping reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic damping reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic damping reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic reinforcement reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic damping reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic damping reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic reinforcement reinforcement method continued from FIG. Explanatory drawing of the construction procedure of the seismic damping reinforcement method continued from FIG. Explanatory drawing of the other example of the construction procedure of the seismic reinforcement reinforcement method continued from FIG. Explanatory drawing of the other example of the construction procedure of the seismic damping reinforcement construction method continued from FIG. Explanatory drawing of another example of the construction procedure of the seismic damping reinforcement method continued from FIG.

  The details of the seismic reinforcement method for an existing building and the seismic reinforcement structure according to the present invention will be described with reference to the accompanying drawings such as FIG. 1 showing an example of the seismic reinforcement structure. 2 is a side view of the damping control structure 10 of FIG. 1, and FIG. 3 is a top view of the damping control structure 10 of FIG. FIG. 4 is an enlarged perspective view of one seismic damping reinforcement structure 10, and FIG. 5 is an enlarged front view of one first steel frame 14. FIG. 6 is an enlarged front view of one second steel frame 15. 1-4, the vertical direction is indicated by an arrow A (only FIGS. 1, 2 and 4), the horizontal direction is indicated by an arrow B (only FIGS. 1, 3 and 4), and the front and rear direction is indicated by an arrow C (only FIGS. 2 and 4). ). In addition, in FIG. 5, illustration of the joining steel material 16 is abbreviate | omitted.

  The vibration control structure 10 includes a foundation pile 11 (new foundation), a plurality of first steel frames 14 parallel to the surface direction of the outer wall 13 of the six-story apartment house 12 (existing building), and a first steel frame. 14, a plurality of second steel frames 15 projecting forward and backward in the front-rear direction (out-of-plane direction) of the outer wall 13 of the house 12, a connecting steel material 16 connecting the first and second steel frames 14, 15, and a vibration damping reinforcement brace 17. And is formed from. As an existing building, a six-story RC structure and a ramen-structured mid-rise housing 12 is illustrated, but the existing building is not limited to the illustrated housing 12, but a commercial building or government building , Government buildings, school buildings, station buildings, and other buildings that are subject to seismic reinforcement. There is no particular limitation on the level and the horizontal span of the existing building, and it may be not only the middle layer but also the low layer, high layer, and super high layer. Furthermore, not only a ramen structure but also a wall structure, an outer shell structure, and a megastructure.

  The foundation pile 11 (new foundation) is built in the ground separated from the outer wall 13 of the house 12 by a predetermined dimension in the front-rear direction. The first steel frames 14 are continuous in the vertical direction and the horizontal direction along the outer wall 13 of the house 12. As shown in FIGS. 4 and 5, one first steel frame 14 includes first and second steel columns 18 </ b> A and 18 </ b> B (H steel) extending in the vertical direction and spaced apart from each other by a predetermined distance in the horizontal direction. The first and second steel beams 19A and 19B (H steel) extending in the lateral direction with a predetermined distance therebetween. The first steel frames 14 are constructed corresponding to the first floor to the top floor of the apartment house 12 or the first floor to the middle floor, and the first floor partial first steel frames 14 to 6 constructed on the first floor of the house. It is formed from the 6th floor part 1st steel frame 14 constructed | assembled in this.

  A plate 20 for fixing the first end portion of the connecting steel material 16 is attached to the central portion of the steel beam 19 in the lateral direction. The first steel frames 14 adjacent in the vertical direction share the steel beam 19, and the first steel frames 14 adjacent in the horizontal direction share the steel column 18. Specifically, the first-floor portion first steel frame 14 and the second-floor portion first steel frame 14 share a steel beam 19 parallel to the first-floor ceiling and second-floor floor of the house 12, and are adjacent in the horizontal direction. The matching first steel frame 14 shares a steel column 18 parallel to the column of the house 12.

  The steel column 18 and the steel beam 19 of the first steel frame 14 are provided with a plurality of reinforcing bars (not shown) extending in the vertical and horizontal directions, and concrete 21 is wound around the entire outer periphery thereof. The steel column 18 forming the first steel frame 14 is formed by anchor bolts 22 (fixing means) and concrete 21 (fixing means) extending between the outer wall 13 of the house 12 and the frame 14 (front-rear direction) and the concrete 21 (fixing means). (Housing pillar). The steel beam 18 forming the first steel frame 14 is formed by anchor bolts 22 (fixing means) and concrete 21 (fixing means) extending between the outer wall 13 of the house 12 and the frame 14 (front-rear direction) and the concrete 21 (fixing means). It is fixed to the (house beam).

  One end of the anchor bolt 22 is driven into an anchor hole (not shown) formed in the outer wall 13 (column or beam) of the house 12 and fixed to the anchor hole by an adhesive filled in the anchor hole. Yes. The other end of the anchor bolt 22 is driven into a concrete 21 wound around a steel column 18 and a steel beam 19 and fixed to the concrete 21. The first steel frame 14 is integrated with the outer wall 13 (the pillars and beams of the house) of the house 12 by anchor bolts 22 and concrete 21.

  Although not shown, the end of the anchor bolt 22 is inserted into a plurality of anchor bolt insertion holes arranged in the vertical direction of the steel column 18, and a nut is inserted into a screw groove formed at the end of the anchor bolt 22. The steel column 18 and the anchor bolt 22 may be connected, and the outer wall 13 of the house 12 and the steel column 18 may be integrated via the anchor bolt 22. Further, the ends of the anchor bolts 22 are inserted into a plurality of anchor bolt insertion holes arranged in the lateral direction of the steel beam 19, and nuts are fitted into screw grooves formed at the ends of the anchor bolt 22, so that the steel beam 19 and the anchor The bolt 22 may be connected, and the outer wall 13 of the house 12 and the steel beam 19 may be integrated via the anchor bolt 22. In this case, anchor bolt insertion holes are previously formed in the length direction of the steel column 18 at a predetermined pitch, and anchor bolt insertion holes are formed in the length direction of the steel beam 19 in advance at a predetermined pitch. ing. The first steel frame 14 is integrated with the outer wall 13 of the house 12 through anchor bolts 22.

  The steel column 18 of the first steel frame 14 is a reinforced steel concrete column (SRC) by covering the entire outer periphery of the steel column 18 with concrete 21 under the arrangement of the reinforcing bars. The steel beam 19 of the first steel frame 14 is a reinforced steel concrete beam (SRC) by covering the entire outer periphery of the steel beam 19 with concrete 21 under the arrangement of the reinforcing bars. As a result, the first steel frame 14 becomes the first reinforced steel concrete frame. Note that the number of first steel frames 14 need only be set to be effective for seismic reinforcement of the housing complex 12, and does not need to be constructed at all levels of the housing 12. There is no particular limitation.

  The second steel frames 15 are connected in the vertical direction in parallel with the outer wall 13 of the house 12 and are arranged with a predetermined distance in the horizontal direction. The second steel frames 15 are constructed corresponding to the first floor to the top floor of the apartment house 12 or the first floor to the middle floor, and the first floor partial second steel frames 15 to 6 constructed on the first floor of the house 12. It is formed from a 6th floor part second steel frame 15 constructed on the floor.

  As shown in FIGS. 4 and 6, one second steel frame 15 includes first and second steel columns 23A and 23B (H steel) extending in the vertical direction with a predetermined distance in the front-rear direction and the vertical direction. The first and second steel beams 24A and 24B (H steel) extending in the front-rear direction so as to face each other with a predetermined distance. The lower end of the second steel column 23B of the second steel frame 15 constructed on the first floor of the house 12 is connected to the foundation pile 11 built in the ground. The first and second steel beams 24A and 24B are located between the first and second steel columns 23A and 23B, and are connected to the first and second steel columns 23A and 23B by welding. The second steel frame 15 is integrated with the first steel frame 14. Plates 25 for fixing the second end of the connecting steel material 16 are attached to both ends of the steel column 23B in the vertical direction.

  The first steel frame 14 and the second steel frame 15 share the steel columns 18A, 18B, and 23A, and the first and second steel columns 18A and 18B of the first steel frame 14 are the first of the second steel frame 15. It becomes a steel column 23A. The second steel frames 15 adjacent in the vertical direction share the steel beam 24. Specifically, the first-floor portion second steel frame 15 and the second-floor portion second steel frame 15 share a steel beam 24 parallel to the first-floor ceiling and second-floor floor of the house 12. The number of the second steel frame 15 is only required to be effective for the seismic reinforcement of the apartment house 12, and it is not necessary to construct it in all the levels of the house 12, and the number of the adjacent frames in the lateral direction is particularly good. There is no limitation.

  Depending on the location conditions of the housing complex 12 and the seismic resistance, it may not be necessary to construct the second steel frame 15 at all. In the seismic reinforcement structure 10, only the first steel frame 14 is constructed, In some cases, the steel frame 15 is not constructed. In this case, the connecting steel material 16 is not attached.

  The connecting steel material 16 has a function of preventing deformation (twisting or buckling) of the second steel frame 15 during vibration. The connecting steel material 16 is a steel material having a circular cross-sectional shape, and is installed between the central portion of the steel beam 19 of the first steel frame 14 and the steel column 23B of the second steel frame 15 and extends in an oblique direction. . As shown in FIG. 4, a pair (two) of connecting steel members 16 is attached to one steel frame 14. A fixing plate 26 that is fixed to the steel beam 19 is attached to a first end portion of the connecting steel member 16 that is positioned on the steel beam 19 side. A fixing plate 27 for fixing to the pillar 23B is attached. The first end portion of the connecting steel material 16 is fixed to the plate 20 of the steel beam 19 via the fixing plate 26. The second end portion of the connecting steel material 16 is fixed to the plate 25 of the steel column 23 </ b> B via the fixing plate 27. The plates 20 and 26 and the plates 25 and 27 are connected to each other by bolts and nuts (not shown).

  The vibration control reinforcement brace 17 is installed on the inner side of the first steel frame 14 and the inner side of the second steel frame 15. In the first steel frame 14, a pair of seismic reinforcement braces 17 are installed symmetrically in the lateral direction. As shown in FIG. 5, one of the seismic reinforcement braces 17 installed on the first steel frame 14 is an intersection 28 between the first steel column 18A and the first steel beam 19A or in the vicinity of the intersection 28 (steel column 18A and steel beam 19A, or a first arm 29 extending obliquely upward from the steel column 18A or steel beam 19A) including the intersection 28 toward the center of the first steel frame 14, and a second steel beam The second arm 30 extending obliquely downward from the center of 19B toward the center of the first steel frame 14, and the intersection 31 of the first steel column 18A and the second steel beam 19B or the vicinity of the intersection 31 (steel column 18A and the steel beam 19B, or a hydraulic damper 32 (vibration energy absorption damper) extending obliquely downward from the steel column 18A or the steel beam 19B including the crossing portion 31).

  The other side of the seismic reinforcement brace 17 installed on the first steel frame 14 is the intersection 33 of the second steel column 18B and the first steel beam 19A or in the vicinity of the intersection 33 (the steel column 18B and the steel beam 19A The first arm 34 extending obliquely upward from the steel column 18B or the steel beam 19A) including the intersecting portion 33 toward the center of the first steel frame 14, and the first arm from the center of the second steel beam 19B. The second arm 35 extending obliquely downward toward the center of the steel frame 14, and the intersection 36 of the second steel column 18B and the second steel beam 19B or in the vicinity of the intersection 36 (the steel column 18B and the steel beam 19B Either or a hydraulic damper 37 (vibration energy absorbing damper) extending obliquely downward from the steel column 18B or the steel beam 19B) including the intersecting portion 36).

  The first arm 29, 34 and the second arm 30, 35 may have the same length dimension or may have different length dimensions. The first arms 29 and 34 are outer end portions 41 that are rotatably attached to the intersecting portions 28 and 33 or gusset plates 38 and 39 fixed in the vicinity of the intersecting portions 28 and 33 via a rotation support 40 (pin). And an inner end portion 43 rotatably connected to the rotary hinge 42 (connecting member), and a columnar intermediate portion 44 extending between the end portions 41 and 43. The gusset plates 38 and 39 are fixed (welded) to the steel columns 18A and 18B and the steel beam 19A.

  The second arms 30 and 35 are rotated by a rotary hinge 42 and an outer end portion 47 rotatably attached to a gusset plate 45 fixed to the center portion of the second steel beam 19B via a rotation support 46 (pin). It has an inner end portion 48 that can be connected, and a cylindrical intermediate portion 49 that extends between the end portions 47 and 48. The gusset plate 45 is fixed (welded) to the steel beam 19B. The first arms 29 and 34 and the second arms 30 and 35 are connected at a predetermined angle to constitute a toggle mechanism.

  The hydraulic dampers 32 and 37 are formed from a cylinder 50 and a rod 51. The end of the cylinder 50 is rotatably attached to the gusset plates 52 and 53 fixed in the vicinity of the intersecting portions 31 and 36 or in the vicinity of the intersecting portions 31 and 36 via a rotation support 54 (pin). The end of the rod 51 is rotatably connected to the rotary hinge 42. The gusset plates 52 and 53 are fixed (welded) to the steel columns 18A and 18B and the steel beam 19B. The hydraulic damper 37 follows the operation of the first and second arms 29, 34, 30, 35 (rotary hinge 42) and deforms the first and second arms 29, 34, 30, 35 by the expansion and contraction of the rod 51. Absorbs the vibration of the first steel frame 14 by absorbing (the amount of rotational displacement of the rotary hinge 42).

  As shown in FIG. 6, the seismic reinforcement brace 17 installed in the second steel frame 15 is an intersection 55 between the second steel column 23B and the first steel beam 24A or in the vicinity of the intersection 55 (the steel column 23B and A first arm 56 extending obliquely upward from one of the steel beams 24A or the steel column 23B or the steel beam 24A including the intersection 55 toward the center of the second steel frame 15, and the first steel column 23A. The second steel frame 15 from the intersection 57 with the second steel beam 24B or the vicinity of the intersection 57 (either the steel column 23A or the steel beam 24B, or the steel column 23A or the steel beam 24B including the intersection 57). The second arm 58 extending obliquely downward toward the center of the first and the intersection 59 of the first steel column 23A and the first steel beam 24A or in the vicinity of the intersection 59 (either the steel column 23A or the steel beam 24A, Or crossing It is formed from a steel column 23A or steel beam 24A) hydraulic damper 60 extending obliquely upward and (vibration energy absorbing damper) containing 9.

  The first arm 56 and the second arm 58 may have the same length or may have different lengths. The first arm 56 includes an outer end portion 63 rotatably attached to a crossing portion 55 or a gusset plate 61 fixed in the vicinity of the crossing portion 55 via a rotary support 62 (pin), and a rotary hinge 64 (a connecting member). ) And an inner end portion 65 rotatably connected to each other, and a cylindrical intermediate portion 66 extending between the end portions 63 and 65. The gusset plate 61 is fixed (welded) to the steel column 23B and the steel beam 24A.

  The second arm 58 is rotatable to the rotating hinge 64 and the outer end portion 69 rotatably attached to the intersecting portion 57 or a gusset plate 67 fixed in the vicinity of the intersecting portion 57 via a rotation support 68 (pin). And an inner end portion 70 connected to each other and a columnar intermediate portion 71 extending between the end portions 69 and 70. The gusset plate 67 is fixed (welded) to the steel column 23A and the steel beam 24B. The first arm 56 and the second arm 58 are connected at a predetermined angle to constitute a toggle mechanism.

  The hydraulic damper 60 is formed from a cylinder 72 and a rod 73. An end portion of the cylinder 72 is rotatably attached to a crossing portion 59 or a gusset plate 74 fixed in the vicinity of the crossing portion 59 via a rotation support 75 (pin). The end of the rod 73 is rotatably connected to the rotary hinge 64. The gusset plate 74 is fixed (welded) to the steel column 23A and the steel beam 24A. The hydraulic damper 60 follows the operation of the first and second arms 56 and 58 (rotating hinge 64) and deforms the first and second arms 56 and 58 by the expansion and contraction of the rod 73 (the amount of rotational displacement of the rotating hinge 64). ) And the vibration of the second steel frame 15 is attenuated.

  7 and 8 are explanatory views of the vibration damping function by the vibration control reinforcement brace 17 installed in the first steel frame 14. 7 and 8, the illustration of the house 12 is omitted, and only the first steel frame 14 (first reinforced steel concrete frame) and the seismic reinforcement brace 17 installed on the first steel frame 14 are shown in an enlarged manner. Based on FIGS. 7 and 8, the principle of vibration attenuation by the vibration control reinforcement brace 17 will be described as follows. In addition, the expansion magnifications of the dampers 32 and 37 are set so that these respective vibration control reinforcement braces 17 cooperate with each other to generate an average amplification magnification (set so as to amplify substantially linearly). ).

  An earthquake or the like causes a vibration in the apartment house 12, and the vibration is transmitted from the house 12 to the first steel frame 14. If the house 12 is horizontally deformed leftward in the horizontal direction, the first steel frame 14 is also horizontally deformed leftward in the horizontal direction as indicated by an arrow X1 in FIG. However, it is assumed that the first and second steel beams 19A and 19B are horizontally deformed while ignoring the expansion and contraction of the first and second steel columns 18A and 18B.

  When the first steel frame 14 is horizontally deformed leftward in the lateral direction, the first arms 29 and 34 and the second arms 30 and 35 of the vibration control reinforcement brace 17 installed inside the first steel frame 14 are turned to the rotary bearings 40 and 40, respectively. Rotation is performed around 54. When these arms 29, 30, 34, and 35 rotate, the amount of rotational displacement of the rotary hinge 42 is amplified and increased by the amount of horizontal displacement of the rotary bearings 40 and 54. In this way, a small displacement amount of the rotary bearings 40 and 54 is converted into a large rotational displacement amount of the rotary hinge 42, and a relationship of small displacement amount × large force = large displacement amount × small force is established. Therefore, the rods 51 of the hydraulic dampers 32 and 37 are greatly expanded and contracted, and the vibration of the first steel frame 14 is converted into heat, whereby the vibration of the first steel frame 14 is attenuated, and at the same time, the first steel frame 14 is simultaneously attenuated. The vibration of the house 12 is suppressed via

  Next, assuming that the house 12 is horizontally deformed rightward in the horizontal direction, the first steel frame 14 is also horizontally deformed rightward in the horizontal direction, as indicated by an arrow X2 in FIG. However, it is assumed that the first and second steel beams 19A and 19B are horizontally deformed while ignoring the expansion and contraction of the first and second steel columns 18A and 18B. When the first steel frame 14 is horizontally deformed to the right in the lateral direction, the first arms 29 and 34 and the second arms 30 and 35 of the damping control brace 17 installed inside the first steel frame 14 are turned to the rotary bearings 40 and 40, respectively. Rotation is performed around 54. When these arms 29, 30, 34, 35 rotate, the amount of rotational displacement of the rotary hinge 42 is amplified and increased by the amount of horizontal displacement of the rotary bearings 40, 54, and the rod 51 of the hydraulic dampers 32, 37 expands and contracts greatly. Thus, the vibration of the first steel frame 14 is converted into heat, whereby the vibration of the first steel frame 14 is attenuated, and at the same time, the vibration of the house 12 is suppressed via the first steel frame 14. Thus, the lateral vibration generated in the house 12 due to the expansion and contraction of the rods 51 of the hydraulic dampers 32 and 37 is effectively reduced.

  9 and 10 are explanatory views of the vibration damping function by the vibration control reinforcement brace 17 installed in the second steel frame 15. 9 and 10, the illustration of the house 12 is omitted, and only the second steel frame 15 (second reinforced steel concrete frame) and the seismic reinforcement brace 17 installed on the second steel frame 15 are shown in an enlarged manner. Based on FIGS. 9 and 10, the principle of vibration damping by the vibration control reinforcement brace 17 will be described as follows. An earthquake or the like causes a vibration in the apartment house 12, and the vibration is transmitted from the house 12 to the second steel frame 15. If the house 12 is horizontally deformed forward in the front-rear direction, the second steel frame 15 is also deformed horizontally forward in the front-rear direction, as indicated by an arrow Y1 in FIG. However, it is assumed that the first and second steel beams 24A and 24B are horizontally deformed while ignoring the expansion and contraction of the first and second steel columns 23A and 23B.

  When the second steel frame 15 is horizontally deformed forward in the front-rear direction, the first arm 56 and the second arm 58 of the vibration control reinforcement brace 17 installed inside the second steel frame 15 rotate around the rotation bearings 62 and 68. Do exercise. When these arms 56 and 58 rotate, the amount of rotational displacement of the rotary hinge 64 is amplified and increased by the amount of horizontal displacement of the rotary bearings 62 and 68, and the rod 73 of the hydraulic damper 60 expands greatly to extend the second steel frame 15. Is converted into heat, whereby the vibration of the second steel frame 15 is attenuated, and at the same time, the vibration of the house 12 is suppressed via the second steel frame 15.

  Next, assuming that the house 12 is horizontally deformed rearward in the front-rear direction, the second steel frame 15 is also deformed horizontally rearward in the front-rear direction, as indicated by an arrow Y2 in FIG. However, it is assumed that the first and second steel beams 24A and 24B are horizontally deformed while ignoring the expansion and contraction of the first and second steel columns 23A and 23B. When the second steel frame 15 is horizontally deformed backward in the front-rear direction, the first arm 56 and the second arm 58 of the vibration control reinforcement brace 17 installed on the inner side of the second steel frame 15 rotate around the rotation supports 62 and 68. Do exercise. When these arms 56 and 58 rotate, the amount of rotational displacement of the rotary hinge 64 is amplified and increased by the amount of horizontal displacement of the rotary bearings 62 and 68, and the rod 73 of the hydraulic damper 60 contracts greatly to cause the second steel frame 15 to contract. Is converted into heat, whereby the vibration of the second steel frame 15 is attenuated, and at the same time, the vibration of the house 12 is suppressed via the second steel frame 15. Thus, the vibration in the front-rear direction generated in the house 12 due to the expansion and contraction of the rod 73 of the hydraulic damper 60 is effectively reduced.

  FIG. 11 is a front view of the first steel frame 14 on which another example of the vibration control reinforcement brace 17 is installed, and FIG. 12 is a front view of the second steel frame 15 on which another example of the vibration suppression reinforcement brace 17 is installed. FIG. Since the first and second steel frames 14 and 15 are the same as those shown in FIGS. 5 and 6, the same reference numerals as those of the first and second steel frames 14 and 15 in FIGS. Those explanations are omitted. In the first steel frame 14 (first reinforced steel concrete frame), a pair of seismic reinforcement braces 17 are installed symmetrically in the lateral direction.

  As shown in FIG. 11, the seismic reinforcement brace 17 installed on the first steel frame 14 is directed from the intersections 31 and 36 of the steel columns 18A and 18B and the steel beam 19B toward the center of the first steel frame 14. A first brace 76 extending obliquely downward, a second brace 77 extending obliquely downward from the central portion of the steel beam 19B toward the center of the first steel frame 14, and an intersection of the steel columns 18A, 18B and the steel beam 19A 28, 33 or the vicinity of the intersections 28, 33 (one of the steel columns 18A, 18B and the steel beam 19A, or the steel columns 18A, 18B or the steel beam 19A including the intersections 28, 33) in the horizontal direction (lateral And a hydraulic damper 78 (seismic energy absorption damper) extending in the direction). The leading end 79 of the first and second braces 76 and 77 and the leading end 80 of the damper 78 are rotatably connected via a pin 81 (rotary support). The base end portion 82 of the first brace 76 is connected to the intersecting portions 31 and 36, and the base end portion 83 of the second brace 77 is connected to the central portion of the steel beam 19B. The base end portion 84 of the damper 78 is rotatably attached to the intersecting portions 28 and 33 or a gusset plate 85 fixed (welded) in the vicinity of the intersecting portions 28 and 33 via pins 86 (rotational support). The damper 78 is formed from a cylinder 87 and a rod 88.

  As shown in FIG. 12, the seismic reinforcement brace 17 installed on the second steel frame 15 extends obliquely downward toward the center of the second steel frame 15 from the intersection 57 between the steel column 23A and the steel beam 24B. The first brace 89, the second brace 91 extending obliquely downward from the intersection 90 between the steel column 23B and the steel beam 24A toward the center of the second steel frame 15, and the intersection between the steel column 23A and the steel beam 24A 59 or a hydraulic damper 92 (seismic energy) extending in the horizontal direction (lateral direction) from the vicinity of the intersection 59 (either the steel column 23A or the steel beam 24A, or the steel column 23A or the steel beam 24A including the intersection 59). Absorption damper). The front end portion 93 of the first and second braces 89 and 91 and the front end portion 94 of the damper 92 are rotatably connected via a pin 95 (rotational support). A base end portion 96 of the first brace 89 is connected to the intersecting portion 57, and a base end portion 97 of the second brace 91 is connected to the intersecting portion 90. The base end portion 98 of the damper 92 is rotatably attached to the intersection portion 59 or a gusset plate 99 fixed in the vicinity of the intersection portion 59 via a pin 100 (rotary support). The damper 92 is formed from a cylinder 101 and a rod 102.

  11 and 12, the first steel frame 14 is horizontally deformed in the lateral direction indicated by arrows X1 and X2 (see FIGS. 7 and 8), and the second steel frame 15 is indicated by arrows Y1 and Y2. When horizontally deformed in the front-rear direction (see FIGS. 9 and 10), the first and second braces 76, 77, 89, 91 perform a rotational motion around the pins 81, 94. When these braces 76, 77, 89, 91 rotate, the rods 88, 102 of the dampers 78, 92 expand and contract in the horizontal direction due to the rotational displacement amount of the pins 81, 94, and the first and second steel frames 14, 15. The vibration is converted into heat, which attenuates the vibration of the first and second steel frames 14,15. 11 and 12, when the seismic reinforcement brace 17 is attached, the vibration transmitted from the housing complex 12 to the first and second steel frames 14 and 15 due to an earthquake or the like is attenuated by the seismic reinforcement brace 17, and accordingly the house The vibration generated in 12 is suppressed.

  FIG. 13 is a front view of a first steel frame 14 in which another example of the vibration control reinforcement brace 17 is installed, and FIG. 14 is a front view of the second steel frame 15 in which another example of the vibration control reinforcement brace 17 is installed. FIG. Since the first and second steel frames 14 and 15 are the same as those shown in FIGS. 5 and 6, the same reference numerals as those of the first and second steel frames 14 and 15 in FIGS. Those explanations are omitted. In the first steel frame 14 (first reinforced steel concrete frame), a pair of seismic reinforcement braces 17 are installed symmetrically in the lateral direction.

  As shown in FIG. 13, the seismic reinforcement brace 17 installed on the first steel frame 14 has the intersections 28 and 33 between the steel columns 18A and 18B and the steel beam 19A or the vicinity of the intersections 28 and 33 (steel frame Hydraulic damper 103 (extending obliquely from one of the columns 18A, 18B and the steel beam 19A, or from the steel columns 18A, 18B or the steel beam 19A including the intersecting portions 28, 33) toward the center of the steel beam 19B. Seismic energy absorption dampers are used. One end 104 of the damper 103 is rotatably connected to a gusset plate 105 fixed in the vicinity of the intersecting portions 28 and 33 or in the vicinity of the intersecting portions 28 and 33 via a pin 106 (rotary support). The other end 107 of the damper 103 is rotatably connected to a gusset plate 108 fixed to the center of the steel beam 19B via a pin 109 (rotary support). The damper 103 is formed from a cylinder 110 and a rod 111.

  As shown in FIG. 14, the seismic reinforcement brace 17 installed in the second steel frame 15 is an intersection 55 between the steel column 23B and the steel beam 24A or in the vicinity of the intersection 55 (the steel column 23B and the steel beam 24A). Or the steel column 23B or the steel beam 24A including the crossing portion 55 to the crossing portion 57 between the steel column 23A and the steel beam 24B or the vicinity of the crossing portion 57 (either the steel column 23A or the steel beam 24B). Alternatively, a hydraulic damper 112 extending in an oblique direction toward the steel column 23A or the steel beam 24B) including the intersection 57 is used. One end 113 of the damper 112 is rotatably connected to the crossing 55 or a gusset plate 114 fixed in the vicinity of the crossing 55 via a pin 115 (rotary support), and the other end 116 of the damper 112 is The gusset plate 117 fixed in the vicinity of the crossing portion 57 or in the vicinity of the crossing portion 57 is rotatably connected via a pin 118 (rotary support). The damper 112 is formed from a cylinder 119 and a rod 120.

  13 and 14, the first steel frame 14 is horizontally deformed in the lateral direction indicated by arrows X1 and X2 (see FIGS. 7 and 8), and the second steel frame 15 is indicated by arrows Y1 and Y2. When horizontally deformed in the front-rear direction (see FIGS. 9 and 10), the dampers 103 and 112 rotate around the pins 106, 109, 115, and 118. When the dampers 103 and 112 are rotated, the rods 111 and 120 of the dampers 103 and 112 are expanded and contracted by the rotational displacement amounts of the pins 106, 109, 115, and 118, and the vibrations of the first and second steel frames 14 and 15 are heated. The vibration of the first and second steel frames 14 and 15 is thereby attenuated. When the seismic reinforcement brace 17 shown in FIGS. 13 and 14 is attached, the vibration transmitted from the housing complex 12 to the first and second steel frames 14 and 15 due to an earthquake or the like is attenuated by the seismic reinforcement brace 17, and accordingly the house The vibration generated in 12 is suppressed.

  FIG. 15 is a front view of the first steel frame 14 in which another example of the vibration control reinforcement brace 17 is installed, and FIG. 16 is a front view of the second steel frame 15 in which another example of the vibration suppression reinforcement brace 17 is installed. FIG. Since the first and second steel frames 14 and 15 are the same as those shown in FIGS. 5 and 6, the same reference numerals as those of the first and second steel frames 14 and 15 in FIGS. Those explanations are omitted. In the first steel frame 14 (first reinforced steel concrete frame) and the second steel frame 15 (second reinforced steel concrete frame), a pair of vibration control reinforcement braces 17 are installed symmetrically in the lateral direction.

  As shown in FIG. 15, the seismic reinforcement brace 17 installed in the first steel frame 14 extends obliquely upward from the intersection 28 between the steel column 18A and the steel beam 19A toward the center of the steel beam 19B. One brace 121, a second brace 122 extending obliquely upward from the intersection 33 of the steel column 18B and the steel beam 19A toward the center of the steel beam 19B, and elastically deformable attached to the center of the steel beam 19B And a plurality of elastic dampers 123 (seismic energy absorbing dampers). The lower ends 124 of the first and second braces 121 and 122 are fixed (welded) to the intersecting portions 28 and 33. The upper ends 125 of the first and second braces 121 and 122 are connected to each other. The elastic dampers 123 are disposed between the central portion of the steel beam 19B and the upper end portions 125 of the braces 121 and 122, and connect the central portion and the upper end portion 125 of the steel beam 19B.

  As shown in FIG. 16, the seismic reinforcement brace 17 installed in the second steel frame 15 extends obliquely upward from the intersection 59 of the steel column 23A and the steel beam 24A toward the center of the steel beam 24B. The first brace 126, the second brace 127 extending obliquely upward from the intersection 55 of the steel column 23B and the steel beam 24A toward the center of the steel beam 24B, and the elastic deformation attached to the center of the steel beam 24B It is formed from a plurality of possible elastic dampers 128 (seismic energy absorbing dampers). Lower end portions 129 of the first and second braces 126 and 127 are fixed (welded) to the intersecting portions 55 and 59. The upper ends 130 of the first and second braces 126 and 127 are connected to each other. The elastic dampers 128 are disposed between the central portion of the steel beam 24B and the upper end portions 130 of the braces 126 and 127, and connect the central portion and the upper end portion 130 of the steel beam 24B.

  15 and 16, the first steel frame 14 is horizontally deformed in the lateral direction indicated by arrows X1 and X2 (see FIGS. 7 and 8), and the second steel frame 15 is indicated by arrows Y1 and Y2. When horizontally deformed in the front-rear direction (see FIGS. 9 and 10), the elastic dampers 123 and 128 are elastically deformed according to the horizontal displacement amount of the first and second steel frames 14 and 15, and the first and second steel frames 14, Fifteen vibrations are converted into heat, which attenuates the vibrations of the first and second steel frames 14,15. When the seismic reinforcement brace 17 shown in FIGS. 15 and 16 is attached, the vibration transmitted from the housing complex 12 to the first and second steel frames 14 and 15 due to an earthquake or the like is attenuated by the seismic reinforcement brace 17, and accordingly the house The vibration generated in 12 is suppressed.

  FIGS. 17 to 19 are perspective views of the first and second steel frames 14 and 15 provided with a steel brace 131 shown as an example. In FIGS. 17-19, illustration of one 2nd steel frame 15 is abbreviate | omitted. Since the first and second steel frames 14 and 15 are the same as those shown in FIGS. 5 and 6, the same reference numerals as those of the first and second steel frames 14 and 15 in FIGS. Those explanations are omitted.

  A pair of steel braces 131 are installed on the first and second steel frame frames 14 and 15 shown in FIG. The steel braces 131 are rotatably connected via pins 132 at their intersections. The steel brace 131 installed on the first steel frame 14 is connected (welded) at the upper end to the intersections 31 and 36 between the steel columns 18A and 18B and the steel beam 19B, and has the lower ends at the steel columns 18A and 18B. Are connected (welded) to intersections 28 and 33 of the steel beam 19A. The steel brace 131 installed on the second steel frame 15 is connected (welded) at the upper ends to the intersections 57 and 90 between the steel columns 23A and 23B and the steel beam 24B, and has the lower ends at the steel columns 23A and 23B. Are connected (welded) to intersections 55 and 59 of the steel beam 24A.

  A pair of steel braces 131 extending in an oblique direction facing each other are installed on the first and second steel frames 14 and 15 shown in FIG. The lower end of the steel brace 131 installed on the first steel frame 14 is connected (welded) to the intersections 28 and 33 between the steel columns 18A and 18B and the steel beam 19A, and the upper end is the center of the steel beam 19B. It is connected (welded) to the part. The lower end of the steel brace 131 installed on the second steel frame 15 is connected (welded) to the intersections 55 and 59 between the steel columns 23A and 23B and the steel beam 24A, and the upper end is the center of the steel beam 24B. It is connected (welded) to the part.

  A pair of steel braces 131 arranged opposite to each other are installed on the first and second steel frames 14 and 15 shown in FIG. The steel brace 131 installed in the first steel frame 14 includes a first brace 131A extending obliquely upward from the intersections 28 and 33 of the steel columns 18A and 18B and the steel beam 19A, and a diagonally downward direction from the center of the steel beam 19B. And a third brace 131C extending obliquely downward from the intersections 31, 36 of the steel columns 18A, 18B and the steel beam 19B. The lower end of the first brace 131A is connected (welded) to the intersecting portions 28 and 33, the upper end of the second brace 131B is connected (welded) to the center of the steel beam 19B, and the upper end of the third brace 131C intersects. The parts 31 and 36 are connected (welded). The 1st-3rd braces 131A-131C are connected (welded) in the state in which those free ends overlapped.

  The steel brace 131 installed on the second steel frame 15 includes a first brace 131A extending obliquely upward from the intersections 55 and 59 between the steel columns 23A and 23B and the steel beam 24A, and a diagonally downward from the center of the steel beam 24B. And a third brace 131C extending obliquely downward from intersections 57 and 90 of the steel columns 23A and 23B and the steel beam 24B. The lower end portion of the first brace 131A is connected (welded) to the intersecting portions 55 and 59, the upper end portion of the second brace 131B is connected (welded) to the central portion of the steel beam 24B, and the upper end portion of the third brace 131C intersects. The parts 57 and 90 are connected (welded). The 1st-3rd braces 131A-131C are connected (welded) in the state in which those free ends overlapped. When the steel brace 131 of FIG. 17 to FIG. 19 is attached, the vibration transmitted from the housing complex 12 to the first and second steel frames 14 and 15 due to an earthquake or the like is reduced by the steel brace 131 and accordingly occurs in the housing 12. Vibrations are suppressed.

  The illustrated seismic reinforcement structure 10 includes a foundation pile 11, a plurality of first steel frames 14 parallel to the surface direction of the outer wall 13 of the apartment house 12 (existing building), and the first steel frame 14 to the house 12. A plurality of second steel frame 15 projecting out of the outer wall 13, a connecting steel member 16, a vibration control reinforcement brace 17 installed on the inside of the first steel frame 14 and the inside of the second steel frame 15, or The first steel frame 14 is fixed to the outer wall 13 of the house 12 via anchor bolts 22 (fixing means) and concrete 21 (fixing means) so as to be integrated with a plurality of layers of the house 12. Since the second steel frame 15 is connected to the first steel frame 14 and integrated with the first steel frame 14, the second steel frame 15 is firmly positioned at a predetermined distance from the outer wall 13 of the house 12 in the out-of-plane direction. Traditional seismic frame construction Unlike seismic reinforcement structure of the operator, not less expensive to build a vibration control reinforcing structure 10, the vibration control reinforcing structure 10 in a short time with a small number of steps can be facility.

  The seismic reinforcement structure 10 does not need to separately secure a wide site for installing it, and can be installed in the housing complex 12 where it is difficult to secure the site. This seismic reinforcement structure 10 includes a seismic reinforcement brace 17 (damping means) that attenuates the vibration generated in the house 12 or a steel brace 131 (damping means) that reduces vibration inside the first steel frame 14. By being installed inside the second steel frame 15, vibrations parallel to the surface direction of the outer wall 13 of the house 12 are absorbed by the vibration control reinforcement brace 17 and the steel brace 131 installed inside the first steel frame 15. Since the vibrations in the in-plane direction and the out-of-plane direction of the outer wall 13 of the house 12 are absorbed by the vibration-control reinforcement brace 17 and the steel brace 131 installed inside the second steel frame 14, the vibration-control reinforcement brace 17 And the vibration which arose in the house 12 using the steel brace 131 can be suppressed effectively.

  The seismic retrofit structure 10 is connected to the foundation pile 11 in which the lower end portion of the steel column 23 of the second steel frame 15 constructed in the first floor portion of the apartment house 12 is built in the ground, and the first steel frame 14 and the second steel frame 15 are supported by the foundation pile 11 through the steel column 23, so that the steel frames 14 and 15 do not inadvertently move during the vibration, and the steel frames 14 and 15 are not moved during the vibration. The seismic control function of the seismic reinforcement brace 17 and the steel brace 131 installed on the inside functions sufficiently, and the seismic vibration generated in the house 12 can be reliably suppressed by using the seismic reinforcement brace 17 and the steel brace 131. it can.

  In the damping control structure 10, a pair of connecting steel members 16 that prevent deformation (twisting or buckling) of the second steel frame 15 during vibration are a steel beam 19 of the first steel frame 14 and a steel frame of the second steel frame 15. Since it is installed between the pillars 23 and it is possible to prevent the seismic control function of the seismic reinforcement brace 17 and the steel brace 131 from being lowered due to the deformation of the second steel frame 15 during vibration, the second steel frame 15 The seismic control function of the seismic reinforcement brace 17 and the steel brace 131 installed on the inside functions sufficiently, and the seismic vibration generated in the housing complex 12 is reliably suppressed by using the seismic reinforcement brace 17 and the steel brace 131. Can do.

  20-22 is explanatory drawing of the construction procedure of the damping control method shown as an example. FIG. 20 shows the apartment house 12 from the front, FIG. 21 shows the house 12 from the top, and FIG. 22 shows the house 12 from the side. In these drawings, the vertical direction is indicated by an arrow A (only FIGS. 20 and 21), the horizontal direction is indicated by an arrow B (only FIGS. 20 and 22), and the front and rear direction is indicated by an arrow C (only FIG. 21). In the description of the seismic damping reinforcement method, the first arms 29 and 34 and the second arms 30 and 35 are provided as the damping damping brace 17 installed on the inner side of the first steel frame 14 and the inner side of the second steel frame 15. The toggle mechanism shown in FIGS. 4 to 6 connected at a predetermined angle will be described as an example. In addition, as the damping control reinforcement brace 17, it can replace with a toggle mechanism and can also use the brace 17 shown in FIGS. Further, a steel brace 131 shown in FIGS. 17 to 19 can be used instead of the seismic reinforcement brace 17. Completion drawings of the housing complex 12 in which the seismic reinforcement structure 10 is installed by the seismic reinforcement method are shown in FIGS.

  In this seismic retrofitting method, as shown in FIGS. 20 to 22, a plurality of foundation piles 11 (new foundations) are built on the ground spaced a predetermined distance forward from the outer wall 13 of the apartment house 12 in the front-rear direction. The foundation piles 11 are arranged at a predetermined distance in the lateral direction along the outer wall 13 of the house 12. A plurality of anchor holes (not shown) are formed in the outer wall 13 of the house 12 at predetermined intervals in the vertical direction and the horizontal direction, and anchor bolts 22 are provided in the anchor holes, and are spaced apart by a predetermined distance in the horizontal direction. A plurality of steel columns 18 (H steel) extending in the vertical direction are installed along the outer wall 13 of the house 12. The anchor bolt 22 is attached to a position facing the installation position of the steel column 18 in the outer wall 13 of the house 12 and a position facing the installation position of the steel beam 19 described later. The anchor bolts 22 are fixed to the anchor holes by an adhesive filled in the anchor holes, and are arranged at predetermined intervals in the vertical direction and the horizontal direction.

  The gusset plates to which the first and second arms 29, 34, 30, 35 and the end portions of the hydraulic dampers 32, 37 are attached are fixed (welded) at positions spaced apart by a predetermined dimension in the vertical direction of the steel column 18. Although not shown, a plurality of reinforcing bars extending in the vertical direction and the horizontal direction are arranged in the steel column 18. The steel column 18 has a length up to the second floor portion of the house 12. The length of the steel column 18 is not limited to the second floor portion of the house 12, and the steel column 18 can use the minimum length up to the first floor portion of the house 12. You can use it up to a length of part.

  Although not shown in the drawings after the steel column 18 (H steel) is installed, the end portions of the anchor bolts 22 are inserted into the plurality of anchor bolt insertion holes arranged in the vertical direction of the steel column 18 and the anchor bolts 22 are inserted. A nut may be fitted into a screw groove formed at the end of the steel plate, and the steel column 18 and the anchor bolt 22 may be connected to each other, and the outer wall 13 of the house 12 and the steel column 18 may be integrated via the anchor bolt 22. In this case, anchor bolt insertion holes are previously formed in the steel column 18 at a predetermined pitch in the length direction.

  FIG. 23 is an explanatory diagram of the construction procedure of the seismic retrofit method continued from FIG. 20, and FIG. 24 is an explanatory diagram of the construction procedure of the seismic retrofit method continued from FIG. FIG. 25 is an explanatory diagram of the construction procedure of the seismic retrofit method continued from FIG. After the foundation pile 11 is built and the steel columns 18 are installed along the outer wall 13 of the house 12, the floor position of the first floor portion of the house 12, the first floor of the house 12, as shown in FIGS. Three steel beams extending laterally at a certain distance in the vertical direction at the position of the ceiling of the part (floor of the second floor part) and the position of the ceiling of the second floor part of the house 12 (floor of the third floor part) 19, the steel beam 19 is connected to the steel column 18, and the first steel frame 14 corresponding to the first and second floor portions of the house 12 is constructed. A plurality of reinforcing bars (not shown) extending in the vertical direction and the horizontal direction are arranged on the steel beams 19, and a plate 20 for fixing a first end portion of a connecting steel member 16 to be described later is arranged in the horizontal direction of the steel beams 19. Join (weld) to the center.

  While installing a plurality of steel pillars 23 extending in the up-down direction in a position spaced apart from the first steel frame 14 by a predetermined distance in the front-rear direction (the same position as the foundation pile 11) in the horizontal direction, The lower end portion of the steel column 23 is connected to the foundation pile 11. The plate for fixing the second end portion of the connecting steel material 16 is joined (welded) to a position separated by a predetermined dimension in the vertical direction of the steel column 23. Next, a plurality of steel beams 24 extending in the front-rear direction and facing each other at a predetermined distance in the lateral direction are installed between the steel columns 23 (23A) and the steel columns 23 (23B), and these steel beams 24 are connected to the steel columns. The second steel frame 15 corresponding to the first floor portion and the second floor portion of the house 12 is constructed. The second steel frame 15 is integrated with the frame 14 by being connected to the first steel frame 14.

  After the first and second steel frames 14 and 15 corresponding to the first floor portion and the second floor portion of the house 12 are constructed, the first and second arms 29 of the vibration control brace 17 are provided inside the first steel frame 14. 30, 34, and 35 are attached at a predetermined angle, and the first and second arms 56 and 58 of the vibration control reinforcement brace 17 are attached at a predetermined angle inside the second steel frame 15.

  In the first steel frame 14 of the first floor part and the second floor part of the house 12, the intersections 28 and 33 of the steel column 18 and the steel beam 19 or the vicinity of the intersections 23 and 33 (the steel column 18 and the steel beam 19 The outer ends 41 of the first arms 29, 34 are connected to the gusset plates 38, 39 fixed to the steel column 18 or the steel beam 19) including the intersecting portions 28, 33 via the rotation support 40 (pin). The outer ends 47 of the second arms 30 and 35 are rotatably attached to a gusset plate 45 fixed to the central portion of the steel beam 19 via a rotation support 46 (pin). The inner ends 43 and 48 of the second arms 29, 30, 34, and 35 are rotatably connected to the rotary hinge 42 (connection member) (see FIGS. 4 and 5).

  In the second steel frame 15 of the first floor portion and the second floor portion of the house 12, either the intersection 55 of the steel column 23 and the steel beam 24, or the vicinity of the intersection 55 (either the steel column 23 and the steel beam 24, or The outer end 63 of the first arm 56 is rotatably attached to a gusset plate 61 fixed to the steel column 23 or the steel beam 24) including the crossing portion 55 via a rotation support 62 (pin). The gusset plate 67 fixed to the intersection 57 of the steel beam 24 or the vicinity of the intersection 57 (either the steel column 23 or the steel beam 24, or the steel column 23 or the steel beam 24 including the intersection 57). The outer end portion 69 of the second arm 58 is rotatably attached to the inner end portions 65 and 70 of the first and second arms 56 and 58 via a rotary bearing 68 (pin). Rotation possible Connection (refer to FIGS. 4 and 6).

  The first and second steel frame frames 14 and 15 corresponding to the first floor portion and the second floor portion of the house 12 are constructed, and the first and second arms 29 and 30 are provided inside the first and second steel frame frames 14 and 15. After attaching 34, 35, 56, 58, the upper ends of the steel columns 18 of the existing first steel frame 15 are provided with a plurality of steel columns 18 (H steel) extending in the vertical direction and spaced apart by a predetermined distance in the lateral direction. The upper end portion of the steel column 18 and the lower end portion of the steel column 18 are connected to each other. A plurality of reinforcing bars (not shown) extending in the vertical direction and the horizontal direction are arranged in the steel column 18 and the gusset plates are joined (welded) at positions spaced apart by a predetermined dimension in the vertical direction of the steel column 18. . The added steel column 18 has a length from the second floor part to the sixth floor part of the house 12 (the length of the fourth floor part of the house 12), and the pillar 18 located at the end is 4 from the second floor part of the house 12. It is the length to the floor portion (the length of the second floor portion of the house 12).

  In addition, after spanning the steel beam 19 (H steel), although not illustrated, the end of the anchor bolt 22 is inserted into a plurality of anchor bolt insertion holes arranged in the lateral direction of the steel beam 19, and the anchor bolt A nut may be fitted into a screw groove formed at the end of the steel plate 22, the steel beam 19 and the anchor bolt 22 may be connected, and the outer wall 13 of the house 12 and the steel beam 19 may be integrated via the anchor bolt 22. In this case, anchor bolt insertion holes are previously formed in the steel beam 19 at a predetermined pitch in the length direction. The first steel frame 14 on the first floor portion and the second floor portion of the house 12 is integrated with the outer wall 13 of the house 12 via anchor bolts 22. Further, after the steel column 18 is added, the end of the anchor bolt 22 is inserted into a plurality of anchor bolt insertion holes arranged in the vertical direction of the steel column 18, and the screw groove formed at the end of the anchor bolt 22 is inserted into the screw groove. A nut may be fitted and connected to the steel column 18 and the anchor bolt 22, and the outer wall 13 of the house 12 and the steel column 18 may be integrated via the anchor bolt 22.

  FIG. 26 is an explanatory diagram of the construction procedure of the seismic retrofitting method that continues from FIG. 23, and FIG. 27 is an explanatory diagram of the construction procedure of the seismic control method that continues from FIG. FIG. 28 is an explanatory diagram of the construction procedure of the seismic damping reinforcement method continued from FIG. After the steel column 18 is added, the position of the ceiling (floor of the fourth floor) of the third floor part of the house 12, the position of the ceiling (floor of the fifth floor part) of the fourth floor of the house 12, the fifth floor part of the house 12 4 steel beams 19 (H steel) that extend in the horizontal direction at a certain distance in the vertical direction at the ceiling position (floor of the 6th floor) of the house and the ceiling position of the 6th floor of the house 12 Then, the steel beam 19 is connected to the steel column 18 to construct the first steel frame 14 corresponding to the third to sixth floor portions of the house 12. A plurality of reinforcing bars (not shown) extending in the vertical direction and the horizontal direction are arranged in the steel beams 19, and the plate 20 for fixing the first end portion of the connecting steel material 16 is arranged in the center in the horizontal direction of the steel beams 19. To (welded).

  A position spaced apart from the first steel frame 14 by a predetermined distance in the front-rear direction (the same position as the foundation pile 11), and opposed to the upper end of the steel column 23 (23B) of the second steel frame 15 by a predetermined distance in the lateral direction. Then, a plurality of steel columns 23 (H steel) extending in the vertical direction are arranged (added), and the upper end portion of the steel column 23 and the lower end portion of the added steel column 23 are connected. The plate for fixing the second end portion of the connecting steel material 16 is joined (welded) to a position separated by a predetermined dimension in the vertical direction of the steel column 23. The added steel column 23 has a length up to the fourth floor portion of the house 12, and the pillar 23 located at the end has a length to the second floor portion of the house 12. A plurality of steel beams 24 extending in the front-rear direction and facing each other at a predetermined distance in the lateral direction are installed between the steel columns 23 (23A) and the steel columns 23 (23B), and the steel beams 24 are connected to the steel columns 23. Then, the second steel frame 15 corresponding to the third to sixth floor portions of the house 12 is constructed. The second steel frame 15 is integrated with the frame 14 by being connected to the first steel frame 14.

  After constructing the first and second steel frame frames 14 and 15 corresponding to the third to sixth floor portions of the house 12, the first and second arms 29 of the vibration control brace 17 are provided inside the first steel frame 14. 30, 34, and 35 are attached at a predetermined angle, and the first and second arms 56 and 58 of the vibration control reinforcement brace 17 are attached at a predetermined angle inside the second steel frame 15.

  In the first steel frame 14 of the third to sixth floor portions of the house 12, the intersections 28 and 33 of the steel column 18 and the steel beam 19 or the vicinity of the intersections 23 and 33 (the steel column 18 and the steel beam 19 The outer ends 41 of the first arms 29, 34 are connected to the gusset plates 38, 39 fixed to the steel column 18 or the steel beam 19) including the intersecting portions 28, 33 via the rotation support 40 (pin). The outer ends 47 of the second arms 30 and 35 are rotatably attached to a gusset plate 45 fixed to the central portion of the steel beam 19 via a rotation support 46 (pin). The inner ends 43 and 48 of the second arms 29, 30, 34, and 35 are rotatably connected to the rotary hinge 42 (connection member) (see FIGS. 4 and 5).

  In the second steel frame 15 of the third to sixth floors of the house 12, the intersection 55 between the steel column 23 and the steel beam 24 or the vicinity of the intersection 55 (either the steel column 23 and the steel beam 24, or The outer end 63 of the first arm 56 is rotatably attached to a gusset plate 61 fixed to the steel column 23 or the steel beam 24) including the crossing portion 55 via a rotation support 62 (pin). The gusset plate 67 fixed to the intersection 57 of the steel beam 24 or the vicinity of the intersection 57 (either the steel column 23 or the steel beam 24, or the steel column 23 or the steel beam 24 including the intersection 57). The outer end portion 69 of the second arm 58 is rotatably attached to the inner end portions 65 and 70 of the first and second arms 56 and 58 via a rotary bearing 68 (pin). Rotating ream (Refer to FIGS. 4 and 6).

  Next, the steel member 16 is installed between the central portion of the steel beam 19 of the first steel frame 14 and the steel column 23 (23B) of the second steel frame 15. The connecting steel material 16 extends in an oblique direction between the central portion of the steel beam 19 and the steel column 23 (23B) of the second steel frame 15. A pair of connecting steel members 16 are installed on one steel frame 14. The fixing plate 26 attached to the first end of the connecting steel 16 is fixed to the plate 20 attached to the steel beam 19, and the fixing plate 27 attached to the second end of the connecting steel 16 is attached to the steel column 23. The plate 25 is fixed. The plates 20, 25, 26, and 27 are connected by bolts and nuts (see FIG. 4).

  In addition, after spanning the steel beam 19 (H steel), although not illustrated, the end of the anchor bolt 22 is inserted into a plurality of anchor bolt insertion holes arranged in the lateral direction of the steel beam 19, and the anchor bolt A nut may be fitted into a screw groove formed at the end of the steel plate 22, the steel beam 19 and the anchor bolt 22 may be connected, and the outer wall 13 of the house 12 and the steel beam 19 may be integrated via the anchor bolt 22. The first steel frame 14 on the third to sixth floors of the house 12 is integrated with the outer wall 13 of the house 12 via anchor bolts 22.

  FIG. 29 is an explanatory diagram of the construction procedure of the seismic retrofitting method that continues from FIG. 26, and FIG. 30 is an explanatory diagram of the construction procedure of the seismic control method that continues from FIG. FIG. 31 is an explanatory diagram of the construction procedure of the seismic reinforcement method continued from FIG. The first and second steel frames 14 and 15 corresponding to the third to sixth floor portions of the house 12 are constructed, and the first and second arms 29 and 30 are provided inside the first and second steel frames 14 and 15. After attaching 34, 35, 56 and 58, a formwork (not shown) for placing concrete on the outer periphery of the first steel frame 14 corresponding to the first and second floor portions of the house 12 is assembled. Then, concrete is cast into the mold, and after curing the concrete for a predetermined period, the mold is removed.

  The anchor bolt 22 is fixed to the anchor hole by an adhesive filled in the anchor hole at one end, and supported at the concrete 21 wound around the steel column 18 and the steel beam 19 at the other end. 21 is fixed. The steel column 18 that forms the first steel frame 14 is formed by anchor bolts 22 (fixing means) and concrete 21 (fixing means) extending between the outer wall 13 of the house 12 and the steel column 18 (front-rear direction) and the concrete 21 (fixing means). A steel beam 19 fixed to 13 (column of the house 12) and forming the first steel frame 14 includes an anchor bolt 22 (fixing means) extending between the outer wall 13 of the house 12 and the steel beam 19 (front-rear direction) and It is fixed to the outer wall 13 of the house (the beam of the house 12) by the concrete 21 (fixing means). As a result, the first steel frame 14 corresponding to the first floor portion and the second floor portion of the house 12 is integrated with the outer wall 13 (the pillars and beams of the house 12) of the house 12 by the anchor bolts 22 and the concrete 21. The entire outer periphery of the steel column 18 and the steel beam 19 forming the first steel frame 14 is covered with the concrete 21 to become a reinforced steel concrete column 18 (SRC) and a reinforced steel concrete beam 19 (SRC). As a result, the first steel frame 14 becomes the first reinforced steel concrete frame 14.

  FIG. 32 is an explanatory diagram of the construction procedure of the seismic reinforcement method that continues from FIG. 29, and FIG. 33 is an explanatory diagram of the construction procedure of the seismic technology method that continues from FIG. FIG. 34 is an explanatory diagram of the construction procedure of the seismic retrofit method continued from FIG. 31. After the concrete 21 is wound around the outer periphery of the first steel frame 14 corresponding to the first floor portion and the second floor portion of the house 12 and the first steel frame 14 and the outer wall 13 of the house 12 are integrated, A formwork (not shown) for placing concrete was assembled on the outer periphery of the first steel frame 14 corresponding to the floor portion to the sixth floor portion, the concrete was placed on the formwork, and the concrete was cured for a predetermined period. After that, remove the formwork. The first steel frame 14 corresponding to the third to sixth floor portions of the house 12 is integrated with the outer wall 13 (columns and beams of the house 12) of the house 12 by anchor bolts 22 (fixing means) and concrete 21 (fixing means). become.

  After the concrete 21 is wound around the outer periphery of the first steel frame 14 corresponding to the third to sixth floor portions of the house 12 and the first steel frame 14 and the outer wall 13 of the house 12 are integrated, the first and second The hydraulic dampers 32, 37, and 60 that form the vibration control reinforcement brace 17 are attached to the inside of the steel frames 14 and 15. In the first steel frame 14, the intersections 31 and 36 between the steel columns 18A and 18B and the steel beam 19B or the vicinity of the intersections 31 and 36 (one of the steel columns 18A and 18B and the steel beam 19B, or the intersection) The outer ends of the dampers 32 and 37 are rotatably attached to the gusset plates 52 and 53 fixed to the steel columns 18A and 18B including the steel columns 31 and 36 or the steel beam 19B) via the rotation bearings 54 (pins). The inner ends of 32 and 37 are rotatably connected to a rotary hinge 42 (connecting member) (see FIGS. 4 and 5).

  In the second steel frame 15, the intersection 59 between the steel column 23A and the steel beam 24A or the vicinity of the intersection 59 (either the steel column 23A and the steel beam 24A, or the steel column 23A or the steel frame including the intersection 59). When the outer end portion of the damper 60 is rotatably attached to the gusset plate 74 fixed to the beam 24A) via a rotation support 75 (pin), the inner end portion of the damper 60 is turned to the rotating hinge 64 (connection member). It connects so that rotation is possible (refer FIG.4, 6). When the construction procedure shown in FIGS. 20 to 34 is completed, the vibration control structure 10 shown in FIGS. 1 to 3 is completed.

  FIG. 35 is an explanatory diagram of another example of the construction procedure of the seismic reinforcement method that continues from FIG. 23, and FIG. 36 is an explanatory diagram of another example of the construction procedure of the seismic control method that continues from FIG. 24. FIG. 37 is an explanatory diagram of another example of the construction procedure of the seismic reinforcement method continued from FIG. The first and second steel frame frames 14 and 15 corresponding to the first floor portion and the second floor portion of the house are constructed, and the first and second arms 29, 30 and 34 are disposed inside the first and second steel frame frames 14 and 15. , 35, 56, and 58, the connecting steel material 16 is installed between the central portion of the steel beam 19 of the first steel frame 14 and the steel column 23 (23B) of the second steel frame 15. The fixing plate 26 attached to the first end of the connecting steel 16 is fixed to the plate 20 attached to the steel beam 19, and the fixing plate 27 attached to the second end of the connecting steel 16 is attached to the steel column 23. The plate 25 is fixed. Next, a formwork (not shown) for placing concrete is assembled on the outer periphery of the first steel frame 14 corresponding to the first floor part and the second floor part of the house 12, and concrete is placed on the formwork. Then, after curing the concrete for a predetermined period, remove the formwork.

  The anchor bolt 22 is fixed to the anchor hole by an adhesive filled in the anchor hole at one end, and supported at the concrete 21 wound around the steel column 18 and the steel beam 19 at the other end. 21 is fixed. The first steel frame 14 corresponding to the first floor portion and the second floor portion of the house 12 is connected to the outer wall 13 (columns and beams of the house 12) of the house 12 by anchor bolts 22 (fixing means) and concrete 21 (fixing means). Become one. The entire outer periphery of the steel column 18 and the steel beam 19 forming the first steel frame 14 is covered with the concrete 21 to become a reinforced steel concrete column 18 (SRC) and a reinforced steel concrete beam 19 (SRC). As a result, the first steel frame 14 becomes the first reinforced steel concrete frame 14.

  After integrating the first steel frame 14 corresponding to the first and second floor parts of the house 12 and the outer wall 13 of the house 12, the position of the ceiling (floor of the fourth floor) of the third floor part of the house 12, the house Up and down at the position of the ceiling of the 4th floor of 12 (floor of the floor of the 5th floor), the position of the ceiling of the 5th floor of the house 12 (the floor of the 6th floor), and the position of the ceiling of the 6th floor of the house 12 Four steel beams 19 (H steel) extending laterally opposite to each other at a predetermined distance are bridged, and the steel beam 19 is connected to the steel column 18 to correspond to the third to sixth floor portions of the house 12. The steel frame 14 is constructed. A plurality of reinforcing bars (not shown) extending in the vertical direction and the horizontal direction are arranged in the steel beams 19, and the plate 20 for fixing the first end portion of the connecting steel material 16 is arranged in the center in the horizontal direction of the steel beams 19. To (welded).

  A position spaced apart from the first steel frame 14 by a predetermined distance in the front-rear direction (the same position as the foundation pile 11), and opposed to the upper end of the steel column 23 (23B) of the second steel frame 15 by a predetermined distance in the lateral direction. Then, a plurality of steel columns 23 (H steel) extending in the vertical direction are arranged (added), and the upper end portion of the steel column 23 and the lower end portion of the added steel column 23 are connected. The plate 25 for fixing the second end portion of the connecting steel material 16 is joined (welded) at a position spaced apart by a predetermined dimension in the vertical direction of the steel column 23. The added steel column 23 has a length up to the fourth floor portion of the house 12, and the pillar 23 located at the end has a length to the second floor portion of the house 12. A plurality of steel beams 24 extending in the front-rear direction and facing each other at a predetermined distance in the lateral direction are installed between the steel columns 23 (23A) and the steel columns 23 (23B), and the steel beams 24 are connected to the steel columns 23. Then, the second steel frame 15 corresponding to the third to sixth floor portions of the house 12 is constructed. The second steel frame 15 is integrated with the frame 14 by being connected to the first steel frame 14.

  After constructing the first and second steel frame frames 14 and 15 corresponding to the third to sixth floor portions of the house 12, the first and second arms 29 of the vibration control brace 17 are provided inside the first steel frame 14. 30, 34, and 35 are attached at a predetermined angle, and the first and second arms 56 and 58 of the vibration control reinforcement brace 17 are attached at a predetermined angle inside the second steel frame 15. Next, the steel member 16 is installed between the central portion of the steel beam 19 of the first steel frame 14 and the steel column 23 (23A) of the second steel frame 15. In addition, since the installation procedure of the arms 29, 30, 34, 35 and the connecting steel material 16 is the same as that shown in FIGS. 26 to 31, the explanation based on FIGS. Detailed description is omitted.

  The first and second steel frames 14 and 15 corresponding to the third to sixth floor portions of the house 12 are constructed, and the first and second arms 29 and 30 are provided inside the first and second steel frames 14 and 15. After attaching 34, 35, 56, 58, a formwork (not shown) for placing concrete on the outer periphery of the first steel frame 14 corresponding to the third to sixth floor portions of the house 12 is assembled, Concrete is placed on the formwork, and after curing the concrete for a predetermined period, the formwork is removed. The anchor bolt 22 is fixed to the anchor hole by an adhesive filled in the anchor hole at one end, and supported at the concrete 21 wound around the steel column 18 and the steel beam 19 at the other end. 21 is fixed.

  The first steel frame 14 corresponding to the third to sixth floor portions of the house 12 is integrated with the outer wall 13 of the house 12 (the pillars and beams of the house 12) by the anchor bolts 22 and the concrete 21. After the concrete 21 is wound around the outer periphery of the first steel frame 14 corresponding to the third to sixth floor portions of the house 12 and the first steel frame 14 and the outer wall 13 of the house 12 are integrated, the first and second The hydraulic dampers 32, 37, and 60 that form the seismic damping reinforcement brace 17 are attached to the inside of the steel frames 14 and 15 (with assistance of FIGS. 31 to 33). When these construction procedures are completed, the vibration control structure 10 shown in FIGS. 1 to 3 is completed.

  The illustrated seismic retrofitting method constructs the first steel frame 14 parallel to the surface direction of the outer wall 13 of the apartment house 12 (existing building) by two or four levels of the house 12 (at least for one level). 2) or 4 layers (at least one layer) of the first steel frame 14 on the outer wall 13 of the house 12 and anchor 21 (fixing means) and concrete 21 (fixing means). The first steel frame 14 is integrated with the outer wall 13 of the house 12 by sequentially fixing the second steel frame 15 extending from the first steel frame 14 toward the out-of-plane direction of the outer wall 13 of the house 12. While constructing 2 layers or 4 layers (constructing at least one layer), the second steel frame 15 is composed of 2 layers or 4 layers (at least one layer) of the first steel frame. Sequentially connect to 14 Unlike the conventional seismic reinforcement method for constructing a strong seismic retrofit structure at a predetermined distance away from the outer wall 13 of the house 12 in the out-of-plane direction, the construction of the seismic retrofit structure 10 is not costly and less The damping control structure 10 can be installed in a short time by man-hours.

  In the seismic retrofit method, it is not necessary to separately secure a wide site for installing the seismic retrofit structure 10, and the seismic retrofit structure 10 can be installed in the housing complex 12 where it is difficult to secure the site. . In this seismic reinforcement method, the seismic reinforcement brace 17 (seismic control means) that attenuates the vibration generated in the house 12 or the steel brace 131 (seismic control means) that reduces the vibration is provided inside the first steel frame 14 and second. By installing on the inside of the steel frame 15, the vibration parallel to the surface direction of the outer wall 113 of the house 12 is absorbed by the vibration control brace 17 and the steel brace 131 installed on the inside of the first steel frame 15, Since the vibrations in the in-plane direction and the out-of-plane direction of the outer wall 13 are absorbed by the vibration control reinforcement brace 17 and the steel brace 131 installed inside the second steel frame 15, the vibration control reinforcement brace 17 and the steel brace are absorbed. The vibration generated in the house 12 can be effectively suppressed using 131.

  The seismic retrofitting method connects the lower end of the steel column 23 of the second steel frame 15 constructed on the first floor portion of the apartment house 12 to the foundation pile 11 built in the ground, so that the first steel frame 14 and the second steel frame 15 are supported by the foundation pile 11 through the steel column 23, so that the steel frames 14 and 15 do not inadvertently move during the vibration, and the steel frames 14 and 15 are not moved during the vibration. The seismic control function of the seismic reinforcement brace 17 and the steel brace 131 installed on the inside functions sufficiently, and the seismic vibration generated in the house 12 can be reliably suppressed by using the seismic reinforcement brace 17 and the steel brace 131. it can.

  In the seismic retrofitting method, a pair of connecting steel members 16 that prevent deformation (twisting or buckling) of the second steel frame 15 during vibration are used to connect the steel beam 19 of the first steel frame 14 and the steel column 23 of the second steel frame 15. , It is possible to prevent the vibration control function of the seismic reinforcement brace 17 and the steel brace 131 from being deteriorated due to deformation of the second steel frame 15 during vibration. The seismic control function of the seismic reinforcement brace 17 and the steel brace 131 installed on the inside functions sufficiently, and the seismic vibration generated in the housing complex 12 is reliably suppressed by using the seismic reinforcement brace 17 and the steel brace 131. Can do.

10 Seismic control structure 11 Foundation pile (foundation)
12 apartment houses (existing buildings)
13 Outer wall 14 1st steel frame (1st reinforced steel concrete frame)
15 Second steel frame 16 Tie steel 17 Damping reinforcement brace 18 Steel column (steel reinforced concrete column)
19 Steel beams (steel reinforced concrete beams)
21 Concrete (fixing means)
22 Anchor bolt (fixing means)
23 Steel column 24 Steel beam 29 First arm 30 Second arm 32 Hydraulic damper (vibration energy absorption damper)
34 First arm 35 Second arm 37 Hydraulic damper (vibration energy absorption damper)
56 1st arm 58 2nd arm 60 Hydraulic damper (vibration energy absorption damper)
76 1st brace 77 2nd brace 78 Hydraulic damper (vibration energy absorption damper)
89 1st brace 91 2nd brace 92 Hydraulic damper (vibration energy absorption damper)
103 Hydraulic damper (seismic energy absorption damper)
121 1st brace 122 2nd brace 123 Elastic damper (vibration energy absorption damper)
126 1st brace 127 2nd brace 128 Elastic damper (vibration energy absorption damper)
131 steel brace

Claims (4)

A plurality of first steel frames made of steel columns and steel beams and parallel to the surface direction of the outer wall of the existing building are at least one of the existing buildings at a place where seismic reinforcement of the existing building is required. while constructing each hierarchy minutes, one by at least one level-minute of the first steel frame, and the existing building outer wall sequentially fixed to through the fastening means of the existing building exterior wall and the first steel frame A plurality of second steel frames made of steel columns and steel beams and projecting from the first steel frame to the out-of-plane direction of the outer wall of the existing building and arranged in the surface direction are integrated into the existing building. While constructing at least one layer of the existing building at a location requiring seismic reinforcement, the lower end of the steel column of the second steel frame constructed on the first floor portion of the existing building is Along the outer wall of the building, they are lined up at a predetermined distance in the plane direction. Connected to a new foundation pile built on the ground separated by a predetermined distance in the out-of-plane direction of the outer wall of the existing building, and at least one layer of the second steel frame to the first steel frame A seismic retrofitting method for an existing building, in which seismic control means for sequentially connecting and absorbing vibrations of the existing building are installed inside the first steel frame and inside the second steel frame . The seismic reinforcement method for an existing building according to claim 1 , wherein any one of a seismic reinforcement brace and a steel brace is used as the seismic control means . At least one layer is constructed in parallel with the surface direction of the outer wall of the existing building at a location formed from a steel column and a steel beam and requiring seismic reinforcement of the existing building, and the outer wall of the existing building Is formed of a plurality of first steel frames fixed to at least one layer through fixing means and integrated with a plurality of layers of the existing building, a steel column and a steel beam. At least one layer is constructed by projecting from the first steel frame to the out-of-plane direction of the outer wall of the existing building at locations requiring seismic reinforcement, and connected to the first steel frame by at least one layer. A plurality of second steel frames integrated with the first steel frame; and vibration control means for absorbing vibrations of the existing building installed on the inside of the first steel frame and the inside of the second steel frame; 1st floor part of the existing building The lower end part of the steel column of the second steel frame to be constructed is lined up with a predetermined distance in the surface direction along the outer wall of the existing building and is separated by a predetermined distance in the out-of-plane direction of the outer wall of the existing building. Seismic retrofit structure connected to a new foundation pile built in the ground . The seismic reinforcement structure for an existing building according to claim 3, wherein the seismic control means is one of a seismic reinforcement brace and a steel brace .

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