JP2006225972A - Seismic reinforcing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seismic reinforcing structure which is simple and exerts high earthquake-proof effect. <P>SOLUTION: The seismic reinforcing structure has a building foundation (28), a plurality of anchors (18) fixed upwardly to the foundation (28) at predetermined intervals, a wooden sill (22) arranged along an upper surface of the foundation (28) with the anchors (18) penetrated therethrough, first support bodies (12) each secured to an upper end of the anchor (18), second support bodies (16) each secured to a lower surface of the sill (22), compression springs (14) each arranged along the anchor (18) in a section between the first and second support bodies (12), (16), and horizontal rocking absorbing mechanisms (32) each arranged between the second support body (16) and the foundation (28) with the anchor penetrated therethrough. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a seismic reinforcement structure for a building.

  Conventionally, various seismic reinforcement structures have been adopted for buildings in order to enhance the seismic effect.

  In Patent Document 1, the base is sandwiched between a nut-shaped fixture and a stainless steel plate, and a Teflon (registered trademark) sheet is attached to the lower surface of the stainless steel plate so that the base is moved horizontally. It is shown.

In Patent Document 2, the base is sandwiched between a base-isolation support device made of rubber, synthetic resin, metal, a composite of synthetic resin and metal, and an elastically-deformable auxiliary device such as a spring or rubber to absorb vibrations. An isolated seismic isolation tool is shown.
Japanese Patent Laid-Open No. 10-61251 JP 2005-16278 A

  However, the conventional seismic isolation structure has various problems.

  The seismic isolation structure described in Patent Document 1 is a structure in which an anchor having a spring portion is embedded in a cloth foundation processed into a special shape, and the structure is complicated.

  The seismic isolation aid for building described in Patent Document 2 supported the base with a seismic isolation aid such as a spring or rubber, and therefore the seismic isolation function for rolling was not sufficient.

  Therefore, an object of the present invention is to provide a simple and high seismic reinforcement structure.

  Examples of the solving means of the present invention are as follows.

(1) A foundation (28) of a building, a plurality of anchors (18) fixed upward at a predetermined interval to the foundation (28), and a foundation (28) through which these anchors (18) are penetrated ) A wooden base (22) arranged along the upper surface of the first support (12) fixed to the upper end of the anchor (18), and a second support fixed to the lower surface of the base (22). The body (16), the compression spring (14) disposed between the first support (12) and the second support (16) along the anchor (18), and the anchor (18) are penetrated. A seismic reinforcement structure comprising a roll absorbing mechanism (32) disposed between the second support (16) and the foundation (28).

(2) The base (22) has a hole (22a) for passing through both the anchor (18) and the compression spring (14), and the dimension of the hole (22a) of the base (22) is the base (22). And the second support (16) has a hole (16a) for allowing the anchor (18) to pass therethrough, and the second support (16) has a hole ( 16a) is larger than one third of the width of the base (22), and the anchor (18) has a hole (22a) in the base (22), a hole (16a) in the second support (16), and a compression spring. (14) The above-mentioned seismic reinforcement structure characterized by being configured to be relatively movable in the lateral direction.

(3) The roll absorbing mechanism (32) absorbs horizontal shaking of the base (22) and the second support (16) with respect to the foundation (28) by the rolling of a large number of balls (34). The above-mentioned seismic reinforcement structure characterized by having.

(4) A base upper surface fixing plate (36) in which the roll absorbing mechanism (32) is disposed on the upper surface of the foundation (28) so as to face the second support (16), and the base upper surface fixing plate (36). A plurality of balls (34) provided on the upper surface of the base plate, and the balls (34) are disposed between the lower surface of the second support (16) and the upper surface of the base upper surface fixing plate (36). The above-mentioned seismic reinforcement structure.

(5) The anchor (18) is configured as an anchor bolt, and the degree of compression of the compression spring (14) is adjusted by adjusting the fixing position of the nut (26) with respect to the anchor bolt. The above-mentioned seismic reinforcement structure.

  ADVANTAGE OF THE INVENTION According to this invention, the simple and high earthquake-resistant effect can be provided. In particular, it is possible to use a compression spring with a sufficient length by extending the compression spring to the vicinity of the ball and the base upper surface fixing plate. Further, it is possible to prevent the compression spring from protruding greatly from the upper part of the base, and to provide an earthquake-proof reinforcement structure. Can be configured compactly.

  The base has a hole for passing through both the anchor and the compression spring, the size of the base hole is larger than one third of the width of the base, and the second support passes through the anchor. The hole of the second support is larger than one third of the width of the base, and the anchor is transversely relative to the hole of the base, the hole of the second support and the compression spring. If the second support body is greatly swayed in the lateral direction, the lateral force is not directly applied to the anchor and damage to the anchor can be prevented.

  If the lateral vibration absorbing mechanism is configured to absorb lateral vibrations of the base and the second support relative to the foundation by rolling a large number of balls, large lateral (horizontal) vibrations can also be absorbed.

  The roll absorbing mechanism includes a foundation upper surface fixing plate disposed on the upper surface of the foundation so as to face the second support, and a plurality of balls provided on the upper surface of the foundation upper surface fixing plate. When arranged between the lower surface of the support and the upper surface of the base upper surface fixing plate, large lateral (horizontal) shaking can be absorbed.

  When the anchor is configured as an anchor bolt, and the degree of compression of the compression spring is adjusted by adjusting the fixing position of the nut with respect to the anchor bolt, the degree of vertical shaking can be adjusted.

  According to one embodiment of the present invention, a seismic reinforcement structure includes a concrete foundation of a building, a plurality of anchors fixed upward (vertically) at predetermined intervals on the foundation, and penetrating the anchors. A wooden base arranged along the upper surface of the foundation in a deformed form, a plate-like first support fixed to the upper end of the anchor, and a plate-like fixed to the lower surface of the base at the anchor penetration position A second support, a compression spring disposed vertically between the first support and the second support along each anchor, and an anchor passing through the anchor and the second support and the foundation. A roll absorbing mechanism.

  Preferably, the foundation has a large circular hole for passing through both the anchor and the compression spring, the dimension of the hole in the foundation is greater than one third (preferably half) the width of the foundation, and The second support has a large circular hole for penetrating the anchor, and the size of the hole in the second support is larger than one third (preferably half) the width of the base. As a result, the anchor is configured to be relatively sufficiently movable in the lateral direction in the hole of the base, the hole of the second support and the compression spring. Preferably, the diameter of the compression spring is smaller than the diameter of the hole in the base and larger than the diameter of the hole in the second support.

  Preferably, the lateral vibration absorbing mechanism is configured to absorb lateral vibrations of the base and the second support with respect to the foundation by rolling a large number of balls. For example, the roll absorbing mechanism includes a base upper surface fixing plate arranged to face the second support, and a large number of balls provided via adhesive tape on the upper surface of the base upper surface fixing plate. Is arranged between the lower surface of the second support and the upper surface of the base upper surface fixing plate.

  Preferably, the anchor is configured as an anchor bolt, and the degree of compression of the compression spring is adjusted by adjusting the fixing position of the nut with respect to the anchor bolt.

  The seismic reinforcement structure according to another aspect of the present invention includes a first support, a compression spring disposed on the lower surface of the first support and extending in the vertical direction, and a second disposed at the lower end of the compression spring. It has a support and an anchor that is fixed to the first support and passes through the compression spring and the second support and extends in the vertical direction. The anchor is used to fix the first support to the foundation of the building, the second support is used to support the building base, and the compression spring swings up and down the second support. It is the structure which absorbs. Further, the lower side of the compression spring is configured as a roll absorbing mechanism including a ball, and the roll absorbing mechanism is configured to absorb the horizontal swing of the second support by the rolling of the ball.

  The first support is preferably composed of an iron plate or a stainless steel plate as shown in the examples described later, but may be composed of a plate made of other materials or members of various shapes.

  Preferably, the upper surface of the second support is used to support the base while pulling downward. As will be described later, it is preferable that the base is placed and fixed on the upper surface of the second support, and the second support supports the base while pulling the base downward when the base swings upward (bounces). .

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic partial side sectional view showing an example in which the seismic reinforcement structure according to the present invention is applied to a building. FIG. 2 is a top view showing an example of the first support. FIG. 3 is a top view showing an example of the second support.

  The seismic reinforcement structure 10 includes a spring fixing plate 12, a compression spring 14, a base lower surface fixing plate 16, an anchor bolt 18, a base 22, a foundation 28, and a roll absorbing mechanism 32.

  The spring fixing plate 12 corresponds to the first support in the present invention, and is made of a stainless steel plate. In the center of the spring fixing plate 12, a hole 12a for the anchor bolt 18 is provided. The spring fixing plate 12 is fixed to an upper end portion of an anchor bolt 18 described later through a hole 12a.

  The compression spring 14 is disposed between the spring fixing plate 12 and the base lower surface fixing plate 16 along the anchor bolt 18 and is configured by a reinforcing spring extending in the vertical direction. The compression spring 14 is preferably welded to the spring fixing plate 12. As an example of the dimensions, the length h1 from the foundation 28 when the long compression spring 14 is used to the upper surface of the compression spring 14 is 210 mm, and the length of the compression spring from the foundation 28 when a short compression spring (not shown) is used. The length h2 to the upper surface is 150 mm, and the diameter of the spring is 55 mm.

  A spring receiver 20 is fixed to the lower surface of the spring fixing plate 12 by welding, and surrounds the upper end of the compression spring 14.

  A base lower surface fixing plate 16 is disposed at the lower end of the compression spring 14. The base lower surface fixing plate 16 corresponds to the second support body of the present invention, and is made of a stainless steel plate. The compression spring 14 is preferably welded to a region 16 b inside the circle indicated by a dotted line on the base lower surface fixing plate 16.

  The base lower surface fixing plate 16 is fixed to the lower surface of the base 22 by screws 24. The upper surface of the base lower surface fixing plate 16 is used for supporting the base 22 of the building while pulling downward. The base lower surface fixing plate 16 has a hole 16a for accommodating or penetrating the anchor bolt 18 therein. The anchor bolt 18 is configured to be relatively movable in the lateral direction inside the hole 16 a and the compression spring 14. The size of the hole 16a is at least large enough to accommodate the lateral shaking of the base lower surface fixing plate 16, and preferably the size of the hole 16a of the base lower surface fixing plate 16 is one third of the width of the base 22. Is also big. For example, the dimension d2 of the hole 16a is 45 mm, the width w1 of the base 22 is 105 mm, the vertical length w3 of the base lower surface fixing plate 16 is 120 mm, and the horizontal length w4 is 250 mm.

  The base 22 is a wooden base disposed along the upper surface of the foundation 28 in such a manner that the anchor bolt 18 is passed therethrough. The base 22 has a hole 22a for allowing both the anchor bolt 18 and the compression spring 14 to pass therethrough. The size of the hole 22 a of the base 22 is larger than one third of the width of the base 22. For example, the dimension d1 of the hole 22a of the base 22 is 60 mm, the width w1 of the base 22 is 105 mm, and the height of the base is 105 mm.

  On the upper surface of the base 22, a base upper surface reinforcing plate 30 is fixed by screws 24. The compression spring 14 passes through a hole 30 a provided in the center of the base upper surface reinforcing plate 30. In the embodiment shown in FIG. 1, the installation of the base upper surface reinforcing plate 30 is optional. FIG. 4 is a top view showing an example of the base top reinforcing plate. For example, the vertical length w5 of the base upper surface reinforcing plate 30 is 90 mm, the horizontal length w6 is 200 mm, and the dimension d4 of the hole 30a is 60 mm.

  The anchor bolts 18 correspond to the anchors of the present invention, and a plurality of anchor bolts 18 are fixed upward on the foundation 28 at predetermined intervals. The anchor bolt 18 is further fixed to the spring fixing plate 12 via a nut 26, passes through the compression spring 14 and the base lower surface fixing plate 16, and extends in the vertical direction. The anchor bolt 18 is used for fixing the spring fixing plate 12 to the foundation 28 of the building. The degree of compression of the compression spring 14 is adjusted by adjusting the fixed position of the nut 26 with respect to the anchor bolt 18.

  A roll absorbing mechanism 32 is disposed between the base lower surface fixing plate 16 and the foundation 28 so as to penetrate the anchor bolts 18.

  The lateral vibration absorbing mechanism 32 absorbs lateral vibrations of the base 22 and the base lower surface fixing plate 16 with respect to the base 28 by rolling of a large number of balls 34, and faces the base lower surface fixing plate 16 so that the base 28 A base upper surface fixing plate 36 disposed on the upper surface and a large number of balls 34 provided on the upper surface of the base upper surface fixing plate 36 are included. A large number of balls 34 are arranged between the lower surface of the base lower surface fixing plate 16 and the upper surface of the base upper surface fixing plate 36.

  FIG. 5 is a top view showing an example of the roll absorbing mechanism.

  The foundation upper surface fixing plate 36 is disposed so as to face the base lower surface fixing plate 16, and is fixed to the building foundation 28 with a screw 40 through a curl plug 38.

  Two rectangular frames 42 are provided on the upper surface of the base upper surface fixing plate 36 at an interval. A large number of balls 34 are arranged in each frame 42 in a state of being bonded by a bond or a double-sided adhesive tape. It is also possible to similarly bond between the ball 14 and the base lower surface fixing plate 16. A hole 36 a for the anchor bolt 18 is provided in the center of the base upper surface fixing plate 36. When the base lower surface fixing plate 16 and the base upper surface fixing plate 36 move relative to each other, the balls 34 roll to absorb the lateral shaking between the base lower surface fixing plate 16 and the base upper surface fixing plate 36. Yes. A rubber sheet is preferably provided under the base upper surface fixing plate 36. For example, the vertical length w7 of the foundation upper surface fixing plate 36 is 90 mm, the horizontal length w8 is 200 mm, and the width of the foundation 28 is 150 mm.

  FIG. 6 is a schematic side view showing an example of use of the seismic reinforcement structure according to the present invention.

  A plurality of seismic reinforcement structures 10 are adopted in one building 44. That is, each seismic reinforcement structure 10 includes a common base 22 and a foundation 28.

  In addition, although it is preferable to use a long compression spring for the earthquake-proof reinforcement structure, an earthquake-proof reinforcement structure using a short compression spring (not shown) can be used in the vicinity of the tatami arrangement position 46. Since the seismic reinforcement structure using a short compression spring is lower in height than the earthquake resistance reinforcement structure using a long compression spring, the upper portion thereof does not exceed the tatami finish surface 50.

  A roll absorbing mechanism 32 is independently provided immediately below the pillar 52 of the building 44. As a result, the column 52 is stably supported by the foundation 28 and can cope with the lateral shaking of the column 52.

  FIG.7 and FIG.8 shows an example of an effect | action of a seismic reinforcement structure when a building shakes to an up-down direction.

  As shown in FIG. 7, when an upward force indicated by an arrow UP is applied to the foundation 28, the base lower surface fixing plate 16 moves upward together with the foundation 28, the base 22, and the like.

  As shown in FIG. 8, after the state shown in FIG. 7, when a downward force indicated by an arrow DN is applied to the foundation 28, or an upward force indicated by an arrow UP remains on the base 28 or the like. If it is, the space | interval of the foundation 28 and the base 22 will spread. A large space S is newly formed between the extended intervals. At this time, when the base lower surface fixing plate 16 and the base upper surface fixing plate 36 are separated from each other and the compression spring of the seismic reinforcement structure 10 is contracted, the vertical vibration of the base lower surface fixing plate 16 and the base 22 fixed thereto is absorbed. It has become so.

  FIG.9 and FIG.10 shows an example of an effect | action of a seismic reinforcement structure when a building shakes in a horizontal direction.

  In FIG. 9, the base 22, the foundation 28, and the like are in a stationary state. 9 and 10, the configuration near the compression spring is omitted for the sake of clarity.

  As shown in FIG. 10, when a rightward or leftward force indicated by an arrow A or B is applied to the foundation 28, the base lower surface fixing plate 16 and the base 22 are both moved rightward by the rolling of the balls 34. Or move relatively to the left. 10 shows a state in which the foundation 28 is stationary and the base lower surface fixing plate 16 and the base 22 are moved for easy understanding, but the base 28 is moved and the base lower surface fixing plate 16 and the base are moved. 22 may be stationary. In this way, the lateral vibration absorbing mechanism 32 absorbs lateral vibrations of the base lower surface fixing plate 16 and the base 22 fixed thereto by the rolling of the balls 34.

  FIG. 11 is a schematic side view showing an example of a state in which the jack support mechanism is combined with the seismic reinforcement structure according to the present invention.

  A jack support mechanism 58 is provided between the large draw 54 of the building and the solid foundation 56.

  The jack support mechanism 58 includes a jack bundle 60, a jack lower surface fixing plate 64, and a roll absorbing mechanism 62. The upper part of the jack bundle 60 is attached to the large pull 54, and the lower part of the jack bundle 60 is fixed to the jack lower surface fixing plate 64 by welding. The roll absorbing mechanism 62 includes a base upper surface fixing plate 68 disposed on the upper surface of the solid base 56 so as to face the jack lower surface fixing plate 64, and a large number of balls 66 provided on the upper surface of the base upper surface fixing plate 68. . The configuration of the ball 66 and the base upper surface fixing plate 68 is the same as that of the ball 34 and the base upper surface fixing plate 36 in FIG.

  By using the seismic reinforcing structure 10 and the jack support mechanism 58 in combination, the base bottom fixing plate of the seismic reinforcing structure 10 can move sufficiently with the base in the vertical direction and the horizontal direction. Sufficient absorption is possible.

  FIG. 12 is a schematic partial side sectional view showing a modification of the seismic reinforcement structure according to the present invention. In the seismic reinforcement structure shown in FIG. 12, the same members as those in FIG. 1 are given the same reference numerals, and the members having the same functions are added with two at the head. Is attached.

  Differences from the seismic reinforcement structure shown in FIG. 1 will be described. The seismic reinforcement structure 210 includes a wide base 222 and a base lower surface fixing plate 216, and a short compression spring having a large diameter. The width of the base lower surface fixing plate 216 is configured to be larger than the width of the base upper surface fixing plate 236, and the base lower surface fixing plate 216 and the base 222 can largely roll with respect to the base 228 when the ball 34 moves in a wide range. It is like that. The compression spring 214 can also be used by recycling automobile dismantling parts.

  For example, the length h2 from the foundation 228 to the upper surface of the compression spring 214 is 150 mm, the width w2 of the base 222 is 150 mm, and the dimension d3 of the hole 222a of the base 222 is 110 mm. In addition, for example, the diameter of the compression spring 214 is 105 mm, and the height of the base 222 is 105 mm.

  Another embodiment of the present invention will be described with reference to FIGS.

  FIG. 13 is a schematic partial side sectional view showing another example in which the seismic reinforcement structure according to the present invention is applied to a building. FIG. 14 is a top view showing an example of the first support. FIG. 15 is a top view illustrating an example of the second support.

  The seismic reinforcement structure 310 includes a washer 312, a reinforcing spring 314, a base lower surface fixing plate 316, an anchor bolt 318, a base 322, a foundation 328, and a roll absorbing mechanism 332.

  The washer 312 corresponds to the first support in the present invention and is made of an iron plate. In the center of the washer 312, a hole 312 a for the anchor bolt 318 is provided. The washer 312 is fixed to an upper end portion of an anchor bolt 318 described later through a hole 312a. For example, the vertical length w9 and the horizontal length w10 of the washer 312 are both 75 mm, the thickness is 3 mm, and the hole diameter d5 is 13 mm.

  The reinforcing spring 314 corresponds to the compression spring in the present invention, and is disposed between the washer 312 and the base lower surface fixing plate 316 along the anchor bolt 318, and extends in the vertical direction. The reinforcing spring 314 is preferably welded to the washer 312. For example, the inner diameter d6 of the reinforcing spring 314 is 45 mm.

  A base lower surface fixing plate 316 is disposed at the lower end of the reinforcing spring 314. The base lower surface fixing plate 316 corresponds to the second support body of the present invention and is made of an iron plate. The reinforcing spring 314 is preferably welded to a region 316b indicated by a plurality of circles on the base lower surface fixing plate 316.

  The base lower surface fixing plate 316 is fixed to the lower surface of the base 322 with screws 324. The upper surface of the base lower surface fixing plate 316 is used for supporting the base 322 of the building while pulling downward. The base lower surface fixing plate 316 has a hole 316a for accommodating or penetrating the anchor bolt 318 inside, and the anchor bolt 318 is relatively movable in the lateral direction inside the hole 316a and the reinforcing spring 314. It is configured. The size of the hole 316a is at least large enough to accommodate the lateral shaking of the base lower surface fixing plate 316, and preferably the size of the hole 316a of the base lower surface fixing plate 316 is one third of the width of the base 322. Bigger than. For example, the width of the base 322 is 105 mm, the vertical length w11 of the base lower surface fixing plate 316 is 120 mm, the horizontal length w12 is 250 mm, the thickness is 3 mm, and the dimension d7 of the hole 316a is 60 mm. .

  The base 322 is a wooden base disposed along the upper surface of the foundation 328 with the anchor bolt 318 passing therethrough. The base 322 has a hole 322a for allowing both the anchor bolt 318 and the reinforcing spring 14 to pass therethrough. The size of the hole 322 a of the base 322 is larger than one third of the width of the base 322. As an example of the dimensions, the width and height of the base 322 are both 105 mm, and the dimension of the hole 322a is 55 mm.

  On the upper surface of the base 322, a base upper surface reinforcing plate 330 is fixed by screws 324. The reinforcing spring 314 passes through a hole 330 a provided in the center of the base upper surface reinforcing plate 330. In the embodiment shown in FIG. 13, the installation of the base upper surface reinforcing plate 330 is optional. FIG. 16 is a top view illustrating an example of the base top reinforcing plate. For example, the vertical length w13 of the base upper surface reinforcing plate 330 is 90 mm, the horizontal length w14 is 200 mm, and the thickness is 3 mm.

  The anchor bolts 318 correspond to the anchor of the present invention, and a plurality of anchor bolts 318 are fixed to the foundation 328 upward at a predetermined interval. The anchor bolt 318 is further fixed to the washer 312 via a nut 326, passes through the reinforcing spring 314 and the base lower surface fixing plate 316, and extends in the vertical direction. Anchor bolt 318 is used to secure washer 312 to building foundation 328. The degree of compression of the reinforcing spring 314 is adjusted by adjusting the fixing position of the nut 326 with respect to the anchor bolt 318.

  A roll absorbing mechanism 332 is disposed between the base lower surface fixing plate 316 and the foundation 328 so that the anchor bolt 318 is passed therethrough.

  The lateral vibration absorbing mechanism 332 absorbs lateral vibration of the base 322 and the base lower surface fixing plate 316 with respect to the base 328 by rolling of the plurality of balls 334, and faces the base lower surface fixing plate 316. A base upper surface fixing plate 336 disposed on the upper surface and a plurality of balls 334 provided on the upper surface of the base upper surface fixing plate 336 are included. The plurality of balls 334 are disposed between the lower surface of the base lower surface fixing plate 316 and the upper surface of the base upper surface fixing plate 336.

  FIG. 17 is a top view illustrating an example of the roll absorbing mechanism.

  The foundation upper surface fixing plate 336 is disposed to face the base lower surface fixing plate 316 and is fixed to the building foundation 328 with screws 340 through a curl plug 338.

  Two protrusion preventing metal fittings 342 are provided on the upper surface of the base upper surface fixing plate 336 with a gap therebetween. The protrusion preventing metal fitting 342 is formed in a rectangular box shape, and is used by being fixed to the base upper surface fixing plate 336 with the open portion of the box shape facing downward. A plurality of holes are provided in the box-shaped bottom surface portion 342a of the protrusion preventing metal fitting 342, and a part of each ball 314 protrudes from each of the plurality of holes. The protrusion preventing metal fitting 342 prevents the position of the ball 314 from moving even when the ball 314 rotates. In the center of the base upper surface fixing plate 336, a hole 336a for the anchor bolt 318 is provided. When the base lower surface fixing plate 316 and the base upper surface fixing plate 336 move relative to each other, the ball 334 rotates and the lateral vibration between the base lower surface fixing plate 316 and the base upper surface fixing plate 336 is stably and reliably absorbed. It is like that. For example, the vertical length w13 of the base upper surface fixing plate 336 is 90 mm, the horizontal length w14 is 200 mm, the thickness is 3 mm, the diameter d8 of the hole 336a is 13 mm, and the width of the base 328 is 150 mm. .

  FIG. 18 is a schematic side view showing another example of a state in which the jack support mechanism is combined with the seismic reinforcement structure according to the present invention. FIG. 19 is an enlarged schematic partial cross-sectional view of a portion C in FIG. FIG. 20 is a schematic top view showing an example of the jack bundle lower surface fixing plate. FIG. 21 is a schematic top view illustrating an example of a base top surface fixing plate. In FIG. 19, hatching for ease of viewing is omitted.

  A jack support mechanism 358 is provided between the building draw 354 and the solid foundation 356.

  The jack support mechanism 358 includes a jack bundle 360, a jack bundle lower surface fixing plate 364, and a roll absorbing mechanism 362. The upper portion of the jack bundle 360 is attached to the large pull 354, and the lower portion of the jack bundle 360 is fixed to the jack bundle lower surface fixing plate 364 by welding. The roll absorbing mechanism 362 includes a base upper surface fixing plate 368 disposed on the upper surface of the solid base 356 so as to face the jack bundle lower surface fixing plate 364 and a large number of balls 366 provided on the upper surface of the base upper surface fixing plate 368. Including. The functions of the ball 366 and the base upper surface fixing plate 368 are substantially the same as those of the ball 334 and the base upper surface fixing plate 336 of FIG.

  A protrusion preventing metal fitting 370 is provided on the upper surface of the base upper surface fixing plate 368. The protrusion preventing metal fitting 370 is formed in a rectangular box shape, and is used by being fixed to the base upper surface fixing plate 368 with the open portion of the box shape facing downward. A plurality of holes are provided in the box-shaped bottom surface portion 370 a of the protrusion preventing metal fitting 370, and a part of each ball 366 protrudes from the plurality of holes. The protrusion preventing metal fitting 370 prevents the position of the ball 366 from moving even when the ball 366 rotates. When the jack bundle lower surface fixing plate 364 and the base upper surface fixing plate 368 move relative to each other, the ball 366 rotates and the lateral vibration between the jack bundle lower surface fixing plate 364 and the base upper surface fixing plate 368 is stably and reliably absorbed. It has come to be. For example, the vertical length w15 and the horizontal length w16 of the jack bundle lower surface fixing plate 364 are both 120 mm, and the vertical length w17 and the horizontal length w18 of the basic upper surface fixing plate 368 are both 100 mm. is there. Note that, unlike the example shown in FIG. 11, the large pull is lifted by 45 mm.

  By using the earthquake-proof reinforcement structure 10 and the jack support mechanism 358 in combination, the base lower surface fixing plate of the earthquake-proof reinforcement structure 10 can move with the base in a stable and reliable manner in the vertical direction and the horizontal direction. It becomes possible to sufficiently absorb the lateral shaking.

  The invention is not limited to the illustrated embodiment.

It is a general | schematic fragmentary sectional view which shows the example which applied the earthquake-proof reinforcement structure by this invention to a building. It is a top view which shows an example of a 1st support body. It is a top view which shows an example of a 2nd support body. It is a top view which shows an example of a base upper surface reinforcement board. It is a top view which shows an example of a roll absorption mechanism. It is a schematic side view which shows the usage example of the earthquake-proof reinforcement structure by this invention. An example of the action of the seismic reinforcement structure when it shakes in the vertical direction is shown. An example of the action of the seismic reinforcement structure when it shakes in the vertical direction is shown. An example of the action of the seismic reinforcement structure when it sways in the lateral direction is shown. An example of the action of the seismic reinforcement structure when it sways in the lateral direction is shown. It is a schematic side view which shows an example of the state which combined the jack support mechanism with the earthquake-proof reinforcement structure by this invention. It is a general | schematic fragmentary sectional side view which shows the modification of the earthquake-proof reinforcement structure by this invention. It is a general | schematic fragmentary sectional view which shows another example which applied the earthquake-proof reinforcement structure by this invention to a building. It is a top view which shows an example of a 1st support body. It is a top view which shows an example of a 2nd support body. It is a top view which shows an example of a base upper surface reinforcement board. It is a top view which shows an example of a roll absorption mechanism. It is a schematic side view which shows another example of the state which combined the jack support mechanism with the earthquake-proof reinforcement structure by this invention. It is the general | schematic fragmentary sectional view to which the C section of FIG. 18 was expanded. It is a schematic top view which shows an example of a jack bundle lower surface fixing plate. It is a schematic top view which shows an example of a base upper surface fixing plate.

Explanation of symbols

10 Seismic reinforcement structure 12 Spring fixing plate (first support)
12a, 16a, 30a, 36a Hole 14 Compression spring 16 Base bottom surface fixing plate (second support)
16b region 18 anchor bolt (anchor)
20 Spring support 22 Base 24, 40 Screw 26 Nut 28 Foundation 30 Base upper surface reinforcing plate 32, 62 Roll absorbing mechanism 34, 66 Ball 36, 68 Base upper surface fixing plate 38 Curl plug 42 Frame 44 Building 46 Tatami placement position 50 Finished surface 52 Column 54 Large draw 56 Solid foundation 58 Jack support mechanism 60 Jack bundle 64 Jack bottom fixing plate

Claims (5)

  A foundation (28) of the building, a plurality of anchors (18) fixed upward at predetermined intervals to the foundation (28), and an upper surface of the foundation (28) in a form penetrating these anchors (18) A wooden base (22) arranged along the first support (12) fixed to the upper end of the anchor (18), and a second support (16) fixed to the lower surface of the base (22) ), A compression spring (14) disposed between the first support (12) and the second support (16) along the anchor (18), and the second support in a form penetrating the anchor (18). A seismic reinforcement structure comprising a roll absorbing mechanism (32) disposed between a body (16) and a foundation (28).   The base (22) has a hole (22a) for passing through both the anchor (18) and the compression spring (14), and the dimension of the hole (22a) of the base (22) is the width of the base (22). It is larger than one third and the second support (16) has a hole (16a) for penetrating the anchor (18), and the hole (16a) of the second support (16) The dimension is larger than one third of the width of the base (22), and the anchor (18) has a hole (22a) in the base (22), a hole (16a) in the second support (16), and a compression spring (14). The seismic reinforcement structure according to claim 1, wherein the seismic reinforcement structure is configured to be relatively movable in the horizontal direction.   The lateral vibration absorbing mechanism (32) is configured to absorb lateral vibrations of the base (22) and the second support (16) with respect to the foundation (28) by rolling of a large number of balls (34). The earthquake-proof reinforcement structure according to claim 1 or 2, characterized by the above-mentioned.   A roll absorbing mechanism (32) is provided on the upper surface of the base upper surface fixing plate (36) disposed on the upper surface of the base (28) so as to face the second support (16), and on the upper surface of the base upper surface fixing plate (36). A plurality of balls (34) provided, the balls (34) being arranged between the lower surface of the second support (16) and the upper surface of the base upper surface fixing plate (36). Item 4. The earthquake-proof reinforcement structure according to item 3. The anchor (18) is configured as an anchor bolt, and the degree of compression of the compression spring (14) is adjusted by adjusting the fixing position of the nut (26) with respect to the anchor bolt. Item 5. The earthquake-proof reinforcement structure according to any one of items 1 to 4.

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