JP3963567B2 - Friction pendulum type seismic isolation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the applicable friction pendulum type immune ShinSo location to buildings and works of art exhibition case or computer for MenShinyuka like.
[0002]
[Prior art]
As an example of a conventional friction pendulum type seismic isolation device, the technology (first known example) disclosed in Japanese Patent Publication No. 5-62179 is connected to a support base 50 provided on the ground as shown in FIG. The curved plate 52 produced by machining and machining a thick plate made of stainless steel with a plate thickness of 30 mm or more is held by the plate housing 51 made of concrete, and is slid and moved on the plate 52 A slider housing 54 that slidably holds a joint slider 53 serving as a possible load transmission body is connected to a support column 55, and the support column 55 is further connected to a structure connection plate 56, and the structure connection plate 56 is connected to a bolt 57. Thus, the support structure 58 is fixed. The joint slider 53 is manufactured by machining a steel material, and a convex joint surface 53a and a convex sliding surface 53b each having a spherical surface are formed on the upper and lower sides thereof.
[0003]
Further, as a second known example, the technique shown in FIG. 11 is a technique in which a lower iron 61 formed by machining a soft steel plate having a thickness of 30 mm or more and machining a curved surface 61a is formed on a support base 60 provided on the ground. The lower sliding plate 62, which is mounted and fixed by bolting, is slidable on the curved surface 61a and becomes a movable load transmission body, is bonded to the upper sliding plate 63, which is also the load transmission body, and the upper sliding plate 63 A columnar member 64 that slidably holds is connected to a flange member 65 to form an upper collar, and the flange member 65 is fixed to the support structure 66 by bolting. The upper and lower sliding plates 63, 62 and the columnar member 64 are each formed by machining a mild steel material to cut out the curved surfaces 63a, 62a, 64a, and the flange member 65 is also formed by a mild steel material.
[0004]
On the other hand, the joint slider 53 and the upper and lower sliding plates 63 and 62 serving as the load transmission body have spherical surfaces on both upper and lower sides, and these are usually manufactured by machining. When performing this machining, the material to be machined must be firmly fixed to the processing device.
[0005]
Further, when the height dimension of the joint slider 53 and the upper and lower sliding plates 63 and 62 serving as the load transmitting body is large, the load transmitting body may fall down and be detached from the slider housing 54 and the columnar member 64. Therefore, it is desirable that the dimension of the load transmission body in the height direction be as small as possible.
[0006]
Since the load transmission body composed of the joint slider 53 and the upper and lower sliding plates 63 and 62 is circular in plan view, it is usually manufactured by cutting out from a cylindrical round bar 71 as shown in FIG. Has been. At this time, when cutting one spherical surface 71a of the two spherical surfaces, the round bar 71 is firmly fixed by gripping the side surface portion opposite to the cutting side of the round bar 71 with the gripping mechanism 72 of the processing apparatus (FIG. 12). The spherical surface 71a is easily formed by cutting with the cutting tool 73 (see FIG. 12C).
[0007]
However, when the remaining spherical portion is cut, the portion on the side opposite to the cutting side has already been formed with the spherical surface 71a, so that it cannot be gripped by the gripping mechanism 72 as shown in FIG. The remaining spherical portion was difficult to cut.
[0008]
Therefore, as shown in the second known example shown in FIG. 11, there is one in which the load transmitting body is composed of two members, upper and lower sliding plates 63 and 62. At this time, for example, as shown in FIG. 13A, a gripping portion 71b for gripping the round bar 71 is formed in advance on the end of the round bar 71 gripped by the gripping mechanism 72 on the opposite side to the cutting side. Then, the gripping portion 71b is gripped by the gripping mechanism 74 to form a spherical surface 71a (see FIG. 13B). Similarly, the other round bar 71 is formed with a gripping portion 71b, and the gripping portion 71b is gripped by the gripping mechanism 74 to form a spherical surface 71c, as shown in FIGS. 13 (c) and 13 (d). Is bonded to form a load transmission body.
[0009]
As another configuration, for example, as shown in FIG. 14A, a female screw 71d for previously holding the round bar 71 at the end opposite to the cutting side of the round bar 71 held by the holding mechanism 72 is provided. The spherical surface 71a is formed by screwing and fastening the female screw 71d formed on the round bar 71 to the male screw 75a standing on the fixing jig 75 held by the holding mechanism 72. (See FIG. 14 (b)). Similarly, the other round bar 71 is also formed with a female screw 71d, and the male screw 71d formed on the round bar 71 is screwed onto the male screw 75a standing on the fixing jig 75 held by the holding mechanism 72. The spherical surface 71c is formed by fastening and fixing, and as shown in FIGS. 14 (c) and 14 (d), both are bonded to form a load transmission body.
[0010]
[Problems to be solved by the invention]
However, in each of the above-mentioned known examples, the first known example plate 52 shown in FIG. 10 and the lower known example 61 shown in FIG. 11 are made of a thick stainless steel plate or a mild steel plate having a thickness of 30 mm or more. The spherical concave sliding surface 52a and the curved surface 61a are formed by machining to increase the processing cost and increase the processing cost, and the use of a thick steel plate as a raw material increases the cost and material cost. There is a problem. In particular, the lower iron 61 in the second known example shown in FIG. 11 is heavier. For example, a 1 mm square, 30 mm thick thick steel plate has a weight of about 236 kg. The construction work was difficult.
[0011]
In the configuration of the second known example shown in FIG. 11, a flange member 65 is separately provided for coupling the columnar member 64 to the support structure 66, and the flange member 65 and the columnar member 64 are mutually connected. There is a problem that not only the machining for connecting the flange members 65 and the columnar members 64 is required, but also the work of joining the flange members 65 and the columnar members 64 is troublesome, and the material cost of the flange members 65 made of mild steel is also increased.
[0012]
Also, as shown in FIG. 12, due to the difficulty in processing the load transmission body from the round bar 71, as shown in FIGS. 13 and 14, the load transmission body is divided into two parts and processed separately. In the case of bonding, there is a problem that the manufacturing work of the load transmission body takes time and the manufacturing cost increases.
[0013]
The present invention is made to solve the above problems, it is an object of the do subjected Hisage friction pendulum seismic isolator capable of binding directly columnar portion for holding a load weight transmitting member to the structure To do.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, a friction pendulum type seismic isolation device according to the present invention has a curved receiving surface, an upper load receiving portion fixed to one structure, and a curved receiving surface. In addition, a friction pendulum type seismic isolation device having a lower load receiving portion fixed to the other structure, and a load transmitting body interposed between both receiving surfaces of the upper load receiving portion and the lower load receiving portion. The upper load receiving portion or the lower load receiving portion is formed of a round bar, and a curved receiving surface is formed by cutting at one end portion, and the other end portion is connected to the steel frame of any of the structures by bolts. The coupling part has a columnar part formed by drilling .
[0015]
According to the above configuration, the upper load receiving portion or the lower load receiving portion is formed of a round bar, and a curved receiving surface is cut and formed at one end, and the steel frame material and bolt of any one of the structures are formed at the other end. By having the columnar part formed by drilling the coupling part for coupling, the columnar part can be directly coupled to the structure through the coupling part, and the columnar part and the structure can be connected as in the conventional example. By omitting a flange member that is separately required for the coupling, it is possible to reduce processing work and coupling work applied to the flange member and reduce material costs.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Specifically described an embodiment of a friction pendulum seismic ShinSo location according to the present invention with reference to FIG. FIG. 1 is a cross-sectional explanatory view showing the configuration of the first embodiment of the friction pendulum type seismic isolation device according to the present invention, FIG. 2 is a plan view showing the configuration of the lower load receiving portion of the first embodiment, and FIG. ) To (c) are cross-sectional explanatory views showing the installation method of the lower load receiving portion of the first embodiment, FIG. 4 is a diagram showing the configuration of a shoe that becomes a load transmission body, and FIG. diagram for explaining a manufacturing method, FIG. 6 shows the configuration of a shoe holder to be columnar portion for holding the load transmission body figure 7 is a sectional explanatory view showing a configuration of a reference example of friction pendulum seismic isolator, FIG. 8 is a plan view showing the structure of the upper load receiving portion of the reference example, FIG. 9 (a) ~ (c) is a sectional view showing an installation method of the upper load receiving portion of the reference example.
[0017]
Friction pendulum seismic ShinSo location according to the present invention relates to appropriately applicable friction pendulum isolator in homes and buildings such as offices and art display cases or computer for MenShinyuka like, the following description Then, an example at the time of applying to buildings, such as a house and an office, is demonstrated.
[0018]
First, a first embodiment of a friction pendulum type seismic isolation device according to the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a ground, and a pile 2 serving as a structure is embedded in the ground 1, and an anchor bolt 3 is erected on the top of the ground 1 and attached to an upper end portion of the pile 2. .
[0019]
A nut 4 is screwed into a predetermined position in the height direction of the anchor bolt 3, and as shown in FIG. 3 (a), a curved surface having a predetermined curvature that is circular in a plan view and convex downward in the center. Countersunk portions 5b formed at the four corners outside the curved receiving surface 5a of the thin metal plate 5 on which the receiving surface 5a is formed are placed on the upper surface of the nut 4, and further the upper surface of the counterbore portion 5b. Then, the nut 6 screwed and fastened to the anchor bolt 3 comes into contact with the metal thin plate 5 and is fixed to the anchor bolt 3 so as to be suspended from the ground 1.
[0020]
The metal thin plate 5 can be composed of, for example, a thin mild steel plate having a plate thickness of about 2.3 mm or less, and a curved receiving surface 5a can be easily formed by bending the metal thin plate 5. I can do it. Therefore, mass production can be performed by press working, and if it is small production, the metal sheet 5 can be bent by spatula drawing or the like to easily form the curved receiving surface 5a.
[0021]
Further, if the metal thin plate 5 is a thin mild steel plate, the material cost is low. For example, a 1 m square, 2.3 mm thick thin mild steel plate has a weight of about 18 kg. It can be easily carried on site by workers without relying on a hoisting machine, and construction work can also be facilitated.
[0022]
Also, spot facings 5b provided at the four corners of the thin metal plate 5 can be easily formed by press working or the like.
[0023]
Further, as shown in FIG. 2, through-holes 5c are formed at four corners outside the curved receiving surface 5a of the thin metal plate 5 and in the vicinity of the spot facing portion 5b. Then, as shown in FIG. 3A, the metal thin plate 5 is fixed to the anchor bolt 3 and installed, and the mold 7 is arranged on the four sides of the metal thin plate 5 outside the anchor bolt 3. As shown in (b), the non-shrinkable grout material 8 is filled from one of the through holes 5c of the thin metal plate 5.
[0024]
The non-shrinkable grout material 8 is filled in the space formed by the ground 1, the mold 7 and the metal thin plate 5, and it is confirmed that the non-shrinkable grout material 8 is blown out from the other three through holes 5c. Thus, it can be confirmed that the space formed by the ground 1, the mold 7 and the metal thin plate 5 is filled with the non-shrinkable grout material 8.
[0025]
Then, at the stage where the non-shrinkable grout material 8 is solidified, as shown in FIG. 3C, the mold 7 is removed, and the grout solidified layer and the metal thin plate 5 obtained by solidifying the non-shrinkable grout material 8 are obtained. By integrating, the lower load receiving portion A is formed.
[0026]
Usually, for installation of a friction pendulum type seismic isolation device, a non-shrinkable grout material is placed under the friction pendulum type seismic isolation device for adjusting the height level and levelness of several to several tens of mm. According to the above configuration, the grout solidified layer filled with the non-shrinkable grout material 8 between the metal thin plate 5 and the ground 1 and solidified, and the metal thin plate 5 are placed. Since it is constructed integrally, the non-shrinkable grout material 8 can be used for height level adjustment and horizontality adjustment as it is, which is reasonable.
[0027]
Therefore, there is no need to machine expensive and heavy thick stainless steel plates and thick mild steel plates as in the above-mentioned known examples, and processing costs are reduced by omitting processing operations, material costs are reduced, and weight is reduced. It can be reduced and the construction work can be facilitated.
[0028]
On the curved receiving surface 5a of the thin metal plate 5 constituting the upper surface of the lower load receiving portion A, a shoe 9 serving as a load transmitting body is slidably disposed on the curved receiving surface 5a. ing. As shown in FIG. 4, the shoe 9 has a sliding spherical surface portion 9a having a predetermined curvature that is circular and convex downward corresponding to the curvature of the curved receiving surface 5a of the thin metal plate 5, and the sliding spherical surface portion. It is composed of a single part having a sliding spherical surface portion 9b having a predetermined curvature that is concentric with 9a and is also circular in plan and convex upward.
[0029]
Further, on the sliding spherical surface portion 9b side of the shoe 9, there is formed a screw hole 9c that is concentric with the sliding spherical surface portions 9a and 9b and is drilled at a predetermined depth from the sliding spherical surface portion 9b side toward the sliding spherical surface portion 9a. A chamfered portion 9d is formed on the sliding spherical surface portion 9b side of the screw hole 9c.
[0030]
In this embodiment, the shoe 9 is formed by cutting using a mild steel material. For example, the radius of curvature of the sliding spherical surface portion 9a is 2234 mm, the radius of curvature of the sliding spherical surface portion 9b is 50 mm, and the diameter of the screw hole 9c is the same. 16mm and depth are set to 20mm. The surface of the shoe 9 is rust-prevented by manganese phosphate treatment (parkarizing), and the surface is lubricated by coating molybdenum disulfide by baking or the like.
[0031]
Next, a manufacturing method of the shoe 9 serving as a load transmission body will be described with reference to FIG. First, for example, a round bar 10 having an outer diameter of 100 mm, which becomes a metal block such as a mild steel material shown in FIG. 5A, is gripped by a gripping mechanism 11 of a processing apparatus, and a sliding spherical surface is formed on one end of the round bar 10 by a cutting tool 12. The part 9b is cut and formed (see FIG. 5B).
[0032]
Thereafter, as shown in FIG. 5 (c), after drilling in the axial direction of the round bar 10 at the center of the sliding spherical surface portion 9b with the drilling tool 13, the tap is applied to the sliding spherical surface portion 9b as a gripping portion of the processing apparatus. A screw hole 9c to be used is formed.
[0033]
Thereafter, as shown in FIG. 5 (d), the screw hole 9c formed in the round bar 10 is screwed and fastened to the male screw 14a erected on the fixing jig 14 held by the holding mechanism 11, and fixed. Then, the remaining sliding spherical surface portion 9 a is cut and formed on the other end portion of the round bar 10 by the cutting tool 12.
[0034]
According to the above configuration, the shoe 9 serving as a load transmission body can be constituted by one part and the processing work of the shoe 9 can be facilitated. The load transmission body is divided into two as in the conventional example. There is no need to process them separately and bond them together, making it easy to manufacture the load transmission body and reducing the manufacturing cost.
[0035]
In the above embodiment, the threaded spherical portion 9b is formed in the round bar 10, and then the screw hole 9c is formed. Conversely, the threaded hole 9c is first formed in the round bar 10, and then the sliding spherical portion 9b is formed. You may process so that it does.
[0036]
In FIG. 1, a shoe holder 15 that is a columnar portion that slidably holds the shoe 9 and that serves as an upper load receiving portion is disposed on the upper portion of the shoe 9. At the upper end of the shoe holder 15, a bolt 17 is inserted from the upper surface side of the lower flange 16a into a through hole 16b formed in the lower flange 16a of the H-shaped steel 16 which is a steel frame of the structure, and the bolt 17 is screwed together. A screw hole 15a serving as a coupling portion for bolt coupling by fastening is drilled from the upper end surface side of the shoe holder 15 at a predetermined depth in the thickness direction.
[0037]
Further, a curved receiving surface 15b having a predetermined curvature that is circular in plan and has an upward convex is formed on the lower end portion of the shoe holder 15 in correspondence with the sliding spherical surface portion 9b of the shoe 9 (FIG. 6). reference).
[0038]
In the present embodiment, the shoe holder 15 is also formed by cutting using a mild steel material in the same manner as the shoe 9. For example, the shoe holder 15 has an outer diameter of 110 mm and a thickness of 50 mm, and is a curved receiving member. The radius of curvature of the surface 15b is 50mm, the diameter of the screw hole 15a is 12mm, the depth is 15mm, and the screw hole 15a is arranged at a position of 60mm square, and is set on the periphery of the upper end of the curved receiving surface 15b. Further, a curved surface 15c having a curvature radius of 1 mm is formed.
[0039]
The surface of the shoe holder 15 is rust-prevented by manganese phosphate treatment (parkerizing) in the same manner as the shoe 9, and the surface of the curved receiving surface 15b is covered with molybdenum disulfide by baking or the like. Processing has been applied.
[0040]
The shoe holder 15 is manufactured by machining from a round bar 10 having an outer diameter of 110 mm as shown in FIG. 5A in the same manner as described above. In the case of the shoe holder 15 shown in FIG. As shown in FIGS. 5B and 5C, the circumferential side surface portion 15d having a diameter of 50 mm is gripped by the gripping mechanism 11 of the processing apparatus to cut the curved receiving surface 15b and to form the screw hole 15a.
[0041]
With the above configuration, the bolt 17 is screwed and fastened to the screw hole 15a serving as the coupling portion, so that the shoe holder 15 serving as the columnar portion can be directly coupled to the H-section steel 16 serving as the structure. As in the example, the flange member that is separately required for the coupling between the columnar part and the structure can be omitted, so that the processing work and the coupling work for the flange member can be reduced and the material cost can be reduced.
[0042]
In the above configuration, when vibration is applied to the building constructed above the H-shaped steel 16 due to an earthquake or the like, it is slidably placed and supported on the curved receiving surface 5a of the thin metal plate 5 of the lower load receiving portion A. The made shoe 9 slides and moves on the curved receiving surface 5a to allow horizontal vibration to be damped and to attenuate the seismic load applied to the building.
[0043]
In addition, the building is supported by the structure (pile 2) on the ground 1 side through at least four or more friction pendulum type seismic isolation devices. And the shoe holder 15 used as each upper load receiving part is fixed to an upper structure, and since each lower load receiving part A is fixed to the ground side structure (pile 2), it becomes an upper load receiving part. The shoe holder 15 and the upper structure to which the shoe holder 15 is fixed are always arranged in parallel with the ground side structure (pile 2) and the lower load receiving portion A.
[0044]
Next, a reference example of friction pendulum isolator will be described with reference to FIGS. In FIG. 7, a disk-shaped base 21 is installed on the ground 1, and a lower portion of an anchor bolt 21 a serving as a steel frame of a structure is embedded in the disk-shaped base 21 at a predetermined position of the disk-shaped base 21. The anchor bolt 21a is erected so that the upper part of the anchor bolt 21a is exposed.
[0045]
Reference numeral 22 denotes a shoe holder serving as a columnar portion constituting the lower load receiving portion. A brim portion 22a serving as a coupling portion instead of the screw hole 15a of the shoe holder 15 of the first embodiment shown in FIG. A through hole 22b into which the anchor bolt 21a can be inserted is formed at a predetermined position of the flange 22a. The other structure of the shoe holder 22 is the same as that of the shoe holder 15 of the first embodiment described above.
[0046]
Then, the through hole 22b provided in the flange portion 22a of the shoe holder 22 is inserted into an anchor bolt 21a that is embedded in the disc-like base 21 and the shoe holder 22 is placed on the disc-like base 21. After that, the nut 23 is screwed and fastened to the anchor bolt 21a to fix the shoe holder 22 on the disk-shaped base 21.
[0047]
On the other hand, an upper load receiving portion B is provided at the lower portion of the H-section steel 16 that supports the building. As shown in FIG. 9 (a), first, the upper load receiving portion B is formed by forming a curved receiving surface 24a having a predetermined curvature that is circular in a plan view and convex upward in the center portion. A flat plate 25 provided with a through hole 25a and a screw hole 25b in the upper part of a box-shaped thin metal plate 24 having side pieces 24b erected on the outer four sides is connected to the screw 26 from the outside of the side piece 24b of the thin metal plate 24. The flat plate 25 is fixed by being fastened to the side portion 25c.
[0048]
The metal thin plate 24 can be composed of, for example, a thin soft steel plate having a thickness of about 2.3 mm or less, like the metal thin plate 5 of the first embodiment, and by bending the metal thin plate 24, The curved receiving surface 24a can be easily formed. Further, the side pieces 24b provided upright on the outer four sides of the thin metal plate 24 can be easily formed by pressing or the like, and the substantially same effect as the thin metal plate 5 of the first embodiment described above is obtained. I can do it. Further, the flat plate 25 having substantially the same size as the metal thin plate 24 can also be constituted by a mild steel plate or the like.
[0049]
Then, as shown in FIG. 9B, the non-shrinkable grout material 8 is filled from one of the through holes 25a formed in the flat plate 25 (for example, the through hole 25a provided in the central portion).
[0050]
The non-shrinkable grout material 8 is filled in the space formed by the box-shaped thin metal plate 24 and the flat plate 25, and it is confirmed that the non-shrinkable grout material 8 is blown out from the other four through holes 25a. Thus, it can be confirmed that the space formed by the metal thin plate 24 and the flat plate 25 is filled with the non-shrinkable grout material 8.
[0051]
When the non-shrinkable grout material 8 is solidified, the upper load receiving portion B is formed by integrating the grout solidified layer obtained by solidifying the non-shrinkable grout material 8 and the metal thin plate 24.
[0052]
Then, as shown in FIG. 7, the sliding spherical surface portion 9b of the shoe 9 of the first embodiment described above is slidably placed on the sliding spherical surface portion 22c of the shoe holder 22 installed on the disk-shaped base 21, The upper load receiving portion B is fixed to the lower portion of the H-shaped steel 16 so that the curved receiving surface 24a of the thin metal plate 24 can slidably contact the sliding spherical portion 9a of the shoe 9.
[0053]
When the upper load receiving portion B is fixed to the lower part of the H-shaped steel 16, a bolt 27 is inserted into the through-hole 16b provided in the lower flange 16a of the H-shaped steel 16 from the upper surface side of the lower flange 16a to form a flat plate 25. The upper load receiving portion B is fixed to and supported by the H-section steel 16 by being screwed and fixed to the screw hole 25b.
[0054]
As another installation method, first, the flat plate 25 is attached to the H-shaped steel 16, and then the metal thin plate 24 is fixed to the flat plate 25 so as to avoid the H-shaped steel 16. The grout material 8 may be filled. First, after attaching the flat plate 25 to the metal thin plate 24, the flat plate 25 is fixed to the H-shaped steel 16 integrally with the metal thin plate 24, and the H-shaped steel 16 is also fixed. The non-shrinkable grout material 8 may be filled from the through hole 25a formed so as to be avoided.
[0055]
With the above configuration, the anchor bolt 21a embedded in the disk-like base 21 is fitted into the through hole 22b of the flange portion 22a serving as the coupling portion, and the nut 23 is screwed and fastened to the anchor bolt 21a. A flange member that can directly connect the shoe holder 22 that is a columnar part to the disk-shaped base 21 that is a structure, and is separately required for coupling the columnar part and the structure as in the second known example described above. Can be omitted, and the processing work and coupling work applied to the flange member can be reduced and the material cost can be reduced. Other configurations are substantially the same as those of the first embodiment, and the same effects can be obtained.
[0056]
In the above configuration, the shoe 9 slidably held on the sliding spherical surface portion 22c of the shoe holder 22 is slidably held on the sliding spherical portion 22c of the shoe holder 22 when vibration is applied to the building constructed above the H-shaped steel 16 due to an earthquake or the like. The H-section steel 16 and the upper load receiving part B move integrally by sliding on the 24 curved receiving surfaces 24a, and the seismic load applied to the building can be attenuated by allowing horizontal shaking. It is like that.
[0057]
The curved receiving surfaces 5a and 24a of the thin metal plates 5 and 24, the sliding spherical surface portions 9a and 9b of the shoe 9, the curved receiving surfaces 15b of the shoe holders 15 and 22, and the sliding spherical surface portion 22c are formed as spherical surfaces. Alternatively, it may be formed with other curved surfaces.
[0058]
Incidentally, before the you facilities embodiment, non-shrink properties between one of the curved receiving surfaces 5a, the sheet metal 5 and 24 and the structure forming a 24a of the lower load receiving section A or the upper load receiving section B The grout solidified layer filled with solidified grout material 8 and the metal thin plates 5 and 24 are integrated, but as another configuration, both the lower load receiving portion A and the upper load receiving portion B are curved. The metal thin plates 5 and 24 are formed by integrating the non-shrinkable grout material 8 between the metal thin plates 5 and 24 having the shape receiving surfaces 5a and 24a and the structure and solidifying them. It is also possible to configure and arrange a slidable load transmitting body between the curved receiving surfaces 5a and 24a.
[0059]
【The invention's effect】
The present invention is, of having a working and such the above-described structure, the upper side load receiving portion or the lower side load receiving portion is in and a second end curved receiving surface is formed cut on one end portion made of a round bar By having a columnar portion in which a coupling portion for bolting the steel frame of any one of the structures is formed, the columnar portion is directly coupled to the structure via the coupling portion, which is separately necessary. Thus, it is possible to provide a friction pendulum type seismic isolation device which can omit the flange member and reduce processing work and coupling work on the flange member and reduce the material cost.
[Brief description of the drawings]
FIG. 1 is an explanatory cross-sectional view showing the configuration of a first embodiment of a friction pendulum type seismic isolation device according to the present invention.
FIG. 2 is a plan view showing a configuration of a lower load receiving portion of the first embodiment.
FIGS. 3A to 3C are cross-sectional explanatory views showing a method of installing the lower load receiving portion of the first embodiment. FIGS.
FIG. 4 is a diagram showing a configuration of a shoe that becomes a load transmission body.
FIG. 5 is a diagram illustrating a method for manufacturing a shoe that becomes a load transmission body.
FIG. 6 is a diagram illustrating a configuration of a shoe holder that is a columnar portion that holds a load transmission body.
7 is a cross-sectional view showing a configuration of a reference example of friction pendulum seismic isolator.
FIG. 8 is a plan view showing a configuration of an upper load receiving portion of a reference example .
9A to 9C are cross-sectional explanatory views showing a method of installing the upper load receiving portion of the reference example .
FIG. 10 is a diagram illustrating a first known example.
FIG. 11 is a diagram illustrating a second known example.
FIG. 12 is a diagram illustrating a problem of a conventional example.
FIG. 13 is a diagram illustrating a conventional method for manufacturing a load transmission body.
FIG. 14 is a diagram illustrating another method for manufacturing a load transmission body of a conventional example.
[Explanation of symbols]
A ... Lower load receiving portion B ... Upper load receiving portion 1 ... Ground 2 ... Pile 3 ... Anchor bolt 4 ... Nut 5 ... Metal sheet 5a ... Curved receiving surface 5b ... Counterbore portion 5c ... Through hole 6 ... Nut 7 ... Formwork 8 ... Non-shrinkable grout material 9 ... Shoe 9a, 9b ... Sliding spherical surface part 9c ... Screw hole 9d ... Chamfered part
10 ... Round bar
11 ... Grip mechanism
12 ... Cutting tools
13 ... Drilling tool
14 ... Fixing jig
14a ... Male thread
15 ... Shoe holder
15a ... Screw hole
15b ... Curved receiving surface
15c ... curved surface
16 ... H-section steel
16a ... Lower flange
16b ... through hole
17 ... Bolt
21 ... Disc-shaped base
21a ... Anchor bolt
22… Shoe holder
22a ... Buttocks
22b ... through hole
22c ... Sliding spherical surface
23 ... Nut
24 ... metal sheet
24a ... Curved surface
24b ... side piece
25 ... Flat plate
25a ... through hole
25b ... Screw hole
25c ... side
26 ... screw
27 ... Bolt

Claims (1)

An upper load receiving portion having a curved receiving surface and fixed to one structure; a lower load receiving portion having a curved receiving surface and fixed to the other structure; In the friction pendulum type seismic isolation device having a load transmitting body interposed between both receiving surfaces of the upper load receiving portion and the lower load receiving portion,
The upper load receiving portion or the lower load receiving portion is formed of a round bar, and a curved receiving surface is cut and formed at one end, and the other end is coupled to be bolted to the steel structure of any of the structures. A friction pendulum type seismic isolation device characterized by having a columnar part in which the part is drilled .

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