JP2009046944A - Vertical load support and support device using this support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical load support and a vertical load supporting support device using this support, with a compact simplified structure, while restraining an elastic layer from being excessively deformed to a vertical load. <P>SOLUTION: This vertical load support A1 is formed by fitting an upper shoe 2 and a lower shoe 3 respectively forming a recessed part 2a, a projection part 2b, a recessed part 2c, a projection part 3a, a recessed part 3b, a projection part 3c and a recessed part 3d on opposed surface in a rugged shape via a rubber layer 4. In the fitting state, an outer peripheral surface 2d of the upper shoe 2 is fitted in the outer peripheral side recessed part 3d of the lower shoe 3, and a lap part H is formed for restricting the horizontal movement of an upper frame. In the support device having the support A1, an upper plate is arranged on an upper surface of the upper shoe 2, and mutually overlapping under surface of the upper plate and upper surface of the upper shoe 2, mutually form a sliding surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vertical load support suitable for supporting a bridge, a building, a machine, and the like, and a support device using the vertical load support.

  The present applicant has previously developed a rubber bearing body as described in Patent Document 1. As shown in FIGS. 5 and 6, the rubber bearing body has a concave portion 53 formed on a surface facing the lower collar 52 on the upper collar 51, and a surface facing the upper collar 51 and an upper surface on the lower collar 52. A convex portion 54 that fits with the concave portion 53 is formed at a position corresponding to the concave portion 53 of the collar 51, and the upper collar 51 and the lower collar 52 are fitted via the rubber layer 55 so as to be fitted to the fitting section. Is formed.

  In this rubber bearing body 50, a vertical load support portion is constituted by the horizontal surface of the upper collar 51, the horizontal surface of the lower collar 52 facing the horizontal plane, and the rubber layer 55 disposed between these horizontal planes. A horizontal load support portion is constituted by the inner peripheral surface of the concave portion 53 in the fitting portion, the outer peripheral surface of the convex portion 54 facing the peripheral surface, and the rubber layer 55 disposed between the peripheral surfaces. The Therefore, not only the vertical load but also the horizontal load can be supported only by the rubber support 50.

However, in such a rubber bearing body 50, with respect to a horizontal load (indicated by an arrow h in FIG. 6), the rubber layer 55 is deformed to support the horizontal load, and when a large horizontal load is applied. The rubber layer 55 is excessively deformed. Therefore, there is a problem that the rubber bearing body 50 is increased in size by the amount that this deformation must be allowed. Even when the horizontal load is supported by a movement restriction device such as a side block, the entire device including the rubber support 50 becomes complicated and large. Further, when the rubber layer 55 is excessively deformed, the vertical load support in the vertical load support portion may be uneven.
JP 2005-337002 A

  In recent years, in newly constructed bridges, etc., a function-separated type bearing device that combines a bearing device that supports the vertical load of the superstructure and a bearing device that constrains the horizontal force and the lifting force apart from this is often used. ing.

An object of the present invention is to provide a vertical load support body that suppresses excessive deformation of an elastic layer with respect to a horizontal load, and is compact and has a simplified structure.
Another object of the present invention is to provide a support device for supporting a vertical load using the vertical load support.

The vertical load support of the present invention for solving the above problems has the following configuration.
(1) A vertical load support body in which an upper frame and a lower frame, each having a concave portion and a convex portion formed on opposite surfaces, are concavo-convexly fitted through an elastic layer, and in the fitted state, the upper frame A vertical load support body, wherein an outer peripheral portion of the upper frame is fitted into an outer peripheral concave portion of the lower frame to form a wrap portion that restrains the horizontal movement of the upper frame.
(2) The concave portion and the convex portion formed in the upper frame and the lower frame are configured by inclined wall surfaces except at least the outer peripheral surface of the outer peripheral side concave portion of the lower frame forming the lap portion, The vertical load support according to (1), wherein the outer peripheral surface of the outer peripheral recess of the frame is a substantially vertical surface.
(3) The vertical load support according to (1) or (2), wherein there is a gap between the outer peripheral portion of the upper frame forming the lap portion and the outer peripheral-side concave portion of the lower frame.
(4) The elastic layer interposed between the upper frame and the lower frame has an end located inward of an outer peripheral part of the upper frame, according to any one of (1) to (3). Vertical load support.
(5) The vertical load support according to any one of (1) to (4), wherein the elastic layer is bonded to the upper frame and the lower frame.

  A vertical load supporting support device according to the present invention includes the vertical load supporting body according to any one of (1) to (5), and is disposed between an upper structure and a lower structure. An upper plate is disposed on the upper surface of the upper frame, and the lower surface of the upper plate and the upper surface of the upper frame that overlap each other form a sliding surface.

  According to the vertical load support according to the present invention, the upper frame and the lower frame are fitted into the concave and convex portions via the elastic layer, and in this fitted state, the outer peripheral portion of the upper frame becomes the outer peripheral side concave portion of the lower frame. A lap portion is formed which is fitted to restrain the movement of the upper frame in the horizontal direction. For this reason, when the elastic layer tries to deform excessively with respect to a large horizontal load, the outer peripheral portion of the upper frame abuts against the outer peripheral recess wall surface of the lower frame, so the elastic layer deforms excessively with respect to the horizontal load. Can be suppressed. Therefore, there is no need to arrange a movement restriction device such as a side block as in the conventional case, and the effect is obtained that the vertical load support is compact and the structure is simplified.

  In particular, according to the vertical load support body according to the above (2), the protrusions and the recesses fitted to each other have inclined wall surfaces, so that the fitting height between the recesses and the protrusions is higher than that of the vertical wall surfaces. The thickness of the vertical load support can be reduced and the bearing can be made compact without impairing the vertical load support performance and horizontal load support performance. Further, since the outer peripheral surface of the outer peripheral recess of the lower frame is a substantially vertical surface, the horizontal movement of the upper frame can be reliably restrained.

  According to the support device of the present invention, the lower surface of the upper plate and the upper surface of the upper frame that overlap each other can be slid by the sliding surface, and therefore can follow horizontal displacement in all directions. Suitable as a vertical load support device for vertical load support in an omnidirectional seismic isolation / distributed support function separation type support device together with an appropriate horizontal support device (elastic resistance device, etc.) that receives horizontal force and lifting force It is.

  Hereinafter, an embodiment of a support device according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a support device according to the present embodiment. Fig.2 (a) is a top view which shows the vertical load support body concerning this embodiment, FIG.2 (b) is the side view. FIG. 3 is a cross-sectional view taken along line AA in FIG.

  As shown in FIG. 1, a rubber bearing device 1 according to this embodiment includes an upper collar 2 (upper frame), a lower collar 3 (lower frame), and a rubber layer 4 (elastic layer) disposed therebetween. The vertical load support body A1 which consists of these is provided.

  The lower arm 3 is fixed to a lower structure (not shown) such as a pier via a base plate 5. The lower rod 3 and the base plate 5 are fixed by fixing bolts 6 that pass through the lower rod 3. The base plate 5 is fixed by inserting the anchor bolts 13 installed in the lower structure through the bolt insertion holes 14 of the base plate 5 and tightening them with the nuts 15.

  On the other hand, an upper plate 101 for fixing and holding an upper structure (not shown) such as a bridge with a set bolt 16 is disposed on the upper surface of the upper rod 2 so as to be slidable in all directions with respect to the upper rod 2. ing. That is, the upper plate 101 is slidably disposed on the upper surface of the upper collar 2. In order to make the upper plate 2 slide smoothly, a sliding plate 17 made of fluorine resin or the like is attached to the upper surface of the upper plate 2, and a stainless steel plate 18 is attached to the lower surface of the upper plate 101 in contact therewith. It is attached. A sliding surface is formed by the sliding plate 17 and the stainless steel plate 18. Contrary to the above, the sliding plate 17 may be attached to the upper plate 101 and the stainless steel plate 18 may be attached to the upper rod 2. In place of the set bolt 16, an anchor bolt or the like may be used.

As shown in FIG. 3, a convex portion 3 a, a concave portion 3 b, a convex portion 3 c, and a concave portion 3 d are formed on the surface facing the upper collar 2 of the lower collar 3 from the central portion C to the outer periphery of the vertical load support A <b> 1. They are formed in this order. The upper surfaces of the convex portions 3a and 3c are the same height as the outer peripheral side upper surface of the lower collar 3, so to speak, the upper surface of the lower collar 3 is engraved to form the concave portions 3b and 3d. On the other hand, a concave portion 2a, a convex portion 2b, and a concave portion 2c are formed in this order on the surface facing the lower collar 3 of the upper collar 2 from the center C toward the outer periphery. The upper surface of the convex part 2b is the same height as the lower surface of the outer peripheral part 2d of the upper collar 2, so to speak, the lower surface of the upper collar 2 is engraved to form the concave parts 2a and 2c.
And the convex part and recessed part which were formed in each of these upper collar 2 and lower collar 3 are unevenly fitted via the rubber layer 4. The upper collar 2 and the lower collar 3 are preferably bonded via a rubber layer 4.

Horizontal load support is provided by the inner peripheral surfaces of the recesses 2a and 2c in each fitting portion, the outer peripheral surfaces of the convex portions 3a and 3c facing these inner peripheral surfaces, and the rubber layer 4 disposed between these peripheral surfaces. The part is composed. Further, the vertical load support portion is constituted by the concave portion 2a, the convex portion 2b, the concave portion 2c, the respective horizontal surfaces of the convex portion 3a, the concave portion 3b, the convex portion 3c, and the concave portion 3d, and the rubber layer 4 interposed therebetween. Has been.
At this time, the end portion of the rubber layer 4 is located inward of the outer peripheral portion 2 d of the upper collar 2 to form a space 11. As a result, when a vertical load is applied, the rubber layer 4 bulges into the space 11 and supports the vertical load.

  Further, in a state in which the upper collar 2 and the lower collar 3 are concavo-convexly fitted, the outer peripheral portion 2d of the upper collar 2 is fitted into the outer peripheral recess 3d of the lower frame 3, and the wrap portion that restrains the horizontal movement of the upper frame H (that is, an overlapping region) is formed. A gap W exists between the outer peripheral portion 2d of the upper collar 2 and the outer peripheral recess 3d of the lower collar 3 forming the wrap portion H.

  The height of the wrap portion H (that is, the height from the lower surface of the upper collar 2 to the upper surface of the outer circumferential portion 10 of the lower collar 3) is usually preferably about 5 to 10 mm. Moreover, it is preferable that the clearance W is normally about 1-5 mm. As shown in FIGS. 2A and 2B, the wrap portion H is formed at each corner portion of the lower collar 3.

  By providing the wrap portion H, the rubber layer 4 is deformed and supports the horizontal load for a relatively small horizontal load, but when a large horizontal load (indicated by an arrow h in FIG. 3) is applied. In the wrap portion H, since the outer surface of the outer peripheral portion 2d of the upper collar 2 hits the inner surface of the outer peripheral recess 3d of the lower collar 3, it is possible to suppress the rubber layer 4 from being excessively deformed by a horizontal load.

  The inner peripheral surfaces of the recesses 2a and 2c in the upper collar 2 are each composed of a sloped inclined wall surface 21. Similarly, the outer peripheral surfaces of the convex portions 3a and 3c in the lower collar 3 are also composed of inclined inclined wall surfaces 31. The inclined wall surfaces 21 and 31 can support a vertical load as a bearing surface. Further, since it is not necessary to support a large horizontal load, the fitting height L between the concave portions 2a, 2c and the convex portions 3a, 3c can be lowered, the planar dimension of the vertical load support A1 is reduced, and the thickness is increased. Can be thinned.

  The inclined wall surface 21 and the inclined wall surface 31 facing each other preferably have the same inclination angle. The inclination angle is not particularly limited, but may be about 0 ° to 80 °, preferably about 20 ° to 60 ° with respect to the vertical line. When the inclination angle exceeds 80 ° and approaches 90 °, the amount of swelling of the rubber layer 4 when subjected to a vertical load increases, and the vertical load may not be sufficiently supported. In addition, when the inclination angle is 0 ° with respect to the vertical line, the vertical wall surface is formed, but such a vertical wall surface may be used.

  The thickness of the upper collar 2 is about 10 to 150 mm, preferably about 20 to 100 mm, and the thickness of the lower collar 3 is about 10 to 150 mm, preferably about 20 to 100 mm. The depth of the concave portions 2a and 2c is about 5 to 100 mm, preferably about 15 to 50 mm, and the height of the convex portions 3a and 3c is about 5 to 100 mm, preferably about 15 to 50 mm. There should be.

  The upper rod 2 and the lower rod 3 can be produced by engraving the recesses 2a and 2c and the recesses 3b and 3d in a material such as a steel plate using a known means such as cutting. Moreover, it may replace with cutting etc. and may use well-known means, such as casting and forging, for example. Other methods for forming the recesses 3b and 3d in the lower collar 3 include, for example, members that form the protrusions 3a and 3c and the outer peripheral portion 10 on the surface of a plate material such as a flat steel plate using means such as welding and fixing bolts. And the like. The upper rod 2 and the lower rod 3 can be formed using a material such as a metal plate such as a steel plate, ceramics, or a hard plastic plate, for example.

  The rubber layer 4 is bonded to the upper collar 2 and the lower collar 3 over the entire surface including the inner circumferential surfaces of the recesses 2a and 2c, the outer circumferential surfaces of the projections 3a and 3c, and other horizontal surfaces. The rubber layer 4 contains a vulcanizing agent, a vulcanization accelerator, a vulcanization acceleration aid, an anti-aging agent, a reinforcing agent, a retarder, a plasticizer, and a colorant as necessary, in the rubber component as a main component. It is a combination of agents. The thickness of the rubber layer 4 is about 5 to 50 mm, preferably about 10 to 30 mm.

  As the rubber component, for example, a diene rubber can be used. Examples of the diene rubber include natural rubber and synthetic rubbers such as chloroprene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, butadiene rubber, isoprene rubber, butyl rubber, and halogenated butyl rubber. Examples of the vulcanizing agent include sulfur, organic peroxide, zinc white, and magnesia. Examples of the vulcanization acceleration aid include zinc white and stearic acid. Examples of the antioxidant include amine compounds such as phenyl-α-naphthylamine, N, N′-diphenyl-p-phenylenediamine, and N-phenyl-N′-isopropyl-p-phenylenediamine; And phenolic compounds such as -t-butyl-p-cresol and 4,4'-butylidenebis (3-methyl-6-t-butylphenol). Examples of the plasticizer include petroleum process oil, tar, pitch, natural fats and oils, animal and vegetable fats and oils, and synthetic plasticizers. Examples of the reinforcing agent include carbon black, silica, and white carbon.

In the vertical load support A1, for example, an upper rod 2 and a lower rod 3 are arranged in a mold at a predetermined interval, and a rubber composition in which various compounding agents are blended with a rubber component is injected into the mold. It is possible to manufacture by injecting with vulcanization and integrally vulcanizing and bonding simultaneously with vulcanization molding.
That is, first, a filler serving as a spacer is filled in the outer periphery of the upper rod 2 between the lower rod 3 and the upper rod 2. This filler is for the rubber layer 4 to form a space 11 between the lower heel 3 and the upper heel 2, and after vulcanization bonding, the gap 12 between the lower heel 3 and the upper heel 2 Extract the filler.

  As another method for producing the vertical load support A1, a rubber composition 4 in which various compounding agents are blended with a rubber component is molded by extrusion molding or the like, and a rubber layer 4 having a predetermined thickness is prepared in advance. For example, a method of laminating the rubber layer 4 and the upper collar 2 and the lower collar 3 and bonding them with an adhesive or the like can be mentioned. Examples of the adhesive include thermoplastic adhesives such as vinyl acetate, acrylic, ethylene copolymer, dope cement, monomer cement, polyamide, polyester, and polyurethane; chloroprene rubber, nitrile rubber, recycled rubber, styrene- Examples thereof include rubber adhesives such as butadiene rubber (SBR) and natural rubber.

  For example, when the support device 1 is installed between an upper structure and a lower structure of a bridge, a vertical load support A <b> 1 including a lower rod 3, a rubber layer 4, and an upper rod 2 is installed on the base plate 5. Since the bearing device 1 configured as described above can follow the horizontal displacement in all directions by adopting the sliding mechanism as described above, it is known as a function-separated type bearing device that resists horizontal force and uplift force. Used with horizontal bearing device.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to the above embodiment, A various improvement and change are possible within the range as described in a claim. For example, the wrap portion is not limited to four places like the wrap portion H according to the above-described embodiment, and the wrap portion H may be formed on the entire circumference of the upper collar 2, or FIG. ) And (b), the wrap portions H may be formed at a plurality of places such as two places and three places.

  That is, the vertical load support A2 shown in FIG. 4 (a) includes an upper collar 41, a lower collar 42, and a rubber layer (not shown) disposed therebetween, and the wrap portion H is located on the upper side. It is formed so as to face each other at two locations in the circumferential direction of the flange 41, and a gap 44 is formed between the wrap portions H and H. Further, the vertical load support A3 shown in FIG. 4B is composed of an upper collar 45, a lower collar 46, and a rubber layer (not shown) disposed therebetween, and the wrap portion H is located on the upper side. A gap 48 is formed between the lap portions H, H which are formed at three locations in the circumferential direction of the flange 45 and are adjacent to each other. Other configurations are the same as those of the vertical load support A1 according to the above-described embodiment.

  Although it does not specifically limit as a number of the lap | wrap parts formed, Usually, what is necessary is just to select arbitrarily from the range of about 2-6. The number of convex portions and concave portions (that is, the number of fitting portions) is not particularly limited, and may be set as appropriate according to the size of the support, the size of the upper structure, and the like. For example, when the support is enlarged to support a large superstructure, the number of protrusions and recesses provided on the support can also be increased. The load bearing capacity can be further improved. Further, the fixing of the lower arm and the base plate is not limited to the fixing by the fixing bolt, but may be fixing by welding or the like instead of the fixing bolt.

  In the above-described embodiment, the upper surface of the convex portions 3a and 3c of the lower collar 3 has been described as having the same height as the upper surface on the outer periphery side of the lower collar 3, but the lower collar is lower than the upper surfaces of the convex portions 3a and 3c. 3 may be configured such that the upper surface on the outer peripheral side is 3 to 10 mm higher, preferably 1 to 5 mm higher.

  Instead of the rubber layer 4, other elastic materials such as a thermoplastic resin and a thermoplastic elastomer may be used. Examples of the thermoplastic resin include polyethylene, polypropylene, polyvinyl chloride, ABS resin, acrylic resin, polystyrene, polycarbonate, nylon, polyacetal, polyethylene terephthalate, polyvinylidene chloride, fluororesin, polybutadiene, and the like. Examples of (TPE) include polystyrene-based TPE, poroolefin-based TPE, polyvinyl chloride-based TPE, polyurethane-based TPE (TPU), polyester-based TPE, and polyamide-based TPE.

  Moreover, the support apparatus of this invention is applicable also to various structures, such as a building and machinery other than for bridge | bridging. For example, a building support apparatus includes an upper frame fixed to a building that is an upper structure, a lower frame fixed to a foundation that is a lower structure, and an elastic layer disposed therebetween. The mechanical support device includes an upper frame that is fixed to a machine that is an upper structure, a lower frame that is fixed to a foundation that is a lower structure, and an elastic layer disposed therebetween.

It is a side view which shows the support apparatus concerning one Embodiment of this invention. (A) is a top view which shows the vertical load support body concerning one Embodiment of this invention, (b) is the side view. It is an AA line expanded sectional view of Drawing 2 (a). (A), (b) is a top view which shows the vertical load support body concerning other embodiment of this invention. It is a partially broken perspective sectional view showing a conventional bearing device. It is sectional drawing which shows the conventional bearing apparatus.

Explanation of symbols

H lap portion W idle 1 rubber bearing device 2 upper collar 2a concave portion 2b convex portion 2c concave portion 2d outer peripheral portion 3 lower collar 3a convex portion 3b concave portion 3c convex portion 3d concave portion 4 rubber layer 5 base plate 6 fixing bolt 10 outer peripheral portion 12 of lower collar Gap 13 Anchor bolt 14 Bolt insertion hole 15 Nut 16 Set bolt 17 Sliding plate 18 Stainless steel plate 21, 31 Inclined wall surface 101 Upper plate

Claims (6)

It is a vertical load support body in which an upper frame and a lower frame, each having a concave portion and a convex portion formed on opposite surfaces, are engaged with each other via an elastic layer,
A vertical load characterized in that, in the fitted state, the outer peripheral portion of the upper frame is fitted into the outer peripheral recess of the lower frame to form a wrap portion that restrains the horizontal movement of the upper frame. Support.   The recesses and protrusions formed in the upper frame and the lower frame are configured with inclined wall surfaces except at least the outer peripheral surface of the outer peripheral recess of the lower frame forming the lap portion, and the outer periphery of the lower frame The vertical load support according to claim 1, wherein an outer peripheral surface of the side recess is a substantially vertical surface.   The vertical load support according to claim 1 or 2, wherein there is a gap between the outer peripheral portion of the upper frame forming the lap portion and the outer peripheral recess of the lower frame.   The vertical load support according to any one of claims 1 to 3, wherein an end portion of the elastic layer interposed between the upper frame and the lower frame is positioned inward of an outer peripheral portion of the upper frame.   The vertical load support according to claim 1, wherein the elastic layer is bonded to the upper frame and the lower frame. A support device comprising the vertical load support according to any one of claims 1 to 5, and disposed between an upper structure and a lower structure,
An upper plate is disposed on the upper surface of the upper frame, and the lower surface of the upper plate and the upper surface of the upper frame that overlap each other form a sliding surface with each other.

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