JP6168151B2 - Seismic isolation structure - Google Patents

Description

  The present invention relates to a seismic isolation structure that is applied to a structure such as a three-dimensional warehouse, a boiler facility, a three-dimensional parking facility, and a cargo handling facility to reduce the shaking of the structure.

  A three-dimensional warehouse, which is an example of a structure, has a configuration in which a plurality of racks (shelves) are three-dimensionally assembled using a plurality of steel pillars and a plurality of steel beams. When a large-scale earthquake occurs, it is considered that the three-dimensional warehouse will be damaged, and the load stored in the rack of the three-dimensional warehouse may fall due to the earthquake, and the load may be damaged. It is considered to increase the safety against earthquakes by installing a seismic isolation structure in a three-dimensional warehouse.

  As a seismic isolation structure of a three-dimensional warehouse, there is one having a seismic isolation structure made of laminated rubber between a plurality of pillars and a foundation constituting the three-dimensional warehouse (Patent Document 1). In addition, as the structure in which the columns of the three-dimensional warehouse are cut at the upper and lower halfway positions, the lower ends of the two upper columns are connected by a horizontal first horizontal member, and the two lower columns corresponding to the two upper columns are connected. The upper ends are connected by a horizontal second horizontal member engageable with the first horizontal member so that the first horizontal member and the second horizontal member can slide in the longitudinal direction, and further, the first horizontal member And a second horizontal member are connected by a viscoelastic body (Patent Document 2).

JP 2006-104883 A JP 2013-039989 A

  However, as in Patent Document 1, when a base-isolated structure with laminated rubber is provided between the lower end and the foundation of each supporting leg of a three-dimensional warehouse provided with a large number of supporting legs, the laminated rubber is expensive. Therefore, there is a problem that the equipment cost of the three-dimensional warehouse increases. Also in Patent Document 2, since it is necessary to provide the first horizontal member and the second horizontal member, and further to provide a viscoelastic body for connecting the first horizontal member and the second horizontal member, the structure is There is a problem that the equipment cost of the three-dimensional warehouse increases due to the complexity. Further, in Patent Document 2, the direction in which the support legs are isolated is limited to the longitudinal direction, which is the direction in which the first horizontal member and the second horizontal member slide, and the direction perpendicular to the direction of the slide is limited. Has the problem that it cannot be isolated.

  The present invention has been made in view of the above-described conventional problems, and provides a seismic isolation structure that can effectively isolate a load acting on a column of a structure in a horizontal direction with a simple configuration. is there.

In the seismic isolation structure of the present invention, a flat end surface is disposed between two opposing members, and a flat contact surface that is crimped to the flat end surface is formed at one end and the other end, and the contact surface is It has a seismic isolation column that can be tilted from the state of being crimped to the end face,
Provided on at least one of the two members and the seismic isolation column and projecting so as to surround at least one of the contact surface and the end surface from the horizontal direction, and when the two members move relative to each other in the horizontal direction, It has a stopper member that prevents the seismic column from moving in the horizontal direction, and forms a fulcrum at which the seismic isolation column starts tilting from the state where the end surface and the contact surface are crimped,
The trigger mechanism is configured by the flat end surfaces of the two members, the flat contact surfaces of the seismic isolation columns that are crimped to the end surfaces, and the stopper member that forms the fulcrum.
Further, the seismic isolation structure of the present invention is configured such that a flat end surface is disposed between two members facing each other, and a flat contact surface to be crimped to the flat end surface is formed at one end and the other end. Having a seismic isolation column capable of inclining from a state where the surface is crimped to the end face;
Contact flanges provided on at least one of the end surfaces of the two members and the contact surface of the seismic isolation column, and provided on the other of the end surfaces of the two members and the contact surface of the seismic isolation column A plate-like member protruding outward from the contact flange;
A convex portion provided at the center of at least one of the abutting flange and the plate-like member, and a concave portion provided at the other center of the abutting flange and the plate-like member and fitted with the convex portion. A stopper member for preventing the seismic isolation column from moving in the horizontal direction when the two members move in the horizontal direction;
From the end surface and the contact surface on which the contact flange and the plate-like member are pressure-bonded to each other, a fulcrum formed by the outer periphery of the contact flange to be pressure-bonded to the plate-like member, and the convex portion and the concave portion The trigger mechanism is composed of the stopper member
It is characterized by that.

  In the seismic isolation structure, the two members can be column members.

  In the seismic isolation structure, the two members can be beams.

In the seismic isolation structure, the fulcrum can be formed by the stopper member and the edge of the flat end surface of the two members or the edge of the flat contact surface of the seismic isolation column.

In the seismic isolation structure, the fulcrum can be formed by an outer periphery of a contact flange that is crimped to the plate-like member in a state where the convex portion and the concave portion of the stopper member are fitted.

  In the seismic isolation structure, the stopper member includes a protruding portion having a protruding length in contact with the base isolation column or the two members at a position corresponding to an inclination angle at which the base isolation column can return by its own weight. A member can be formed.

  In the seismic isolation structure, the trigger mechanism may include an elastic body that can elastically connect the two members and the seismic isolation column to adjust a trigger load at which the seismic isolation column starts to tilt.

  In the seismic isolation structure, the flat end surfaces of the two members and the flat contact surface of the seismic isolation column may be different in width and depth in the horizontal biaxial direction.

  In the base isolation structure, the fulcrum formed between the two members and the base isolation column is provided at a position protruding outward in the horizontal direction of the two members and the base isolation column, and the base isolation column Can increase the trigger load to start tilting.

  The seismic isolation structure of the present invention can be applied to structures such as three-dimensional warehouses, boiler facilities, three-dimensional parking facilities, and cargo handling facilities.

  ADVANTAGE OF THE INVENTION According to this invention, the seismic isolation column can incline at the time of an earthquake occurrence, and there can exist the outstanding effect that the load which acts on a structure with a simple structure can be effectively isolated.

It is a front view which shows the seismic isolation structure of Example 1 of this invention, and is a figure which shows the state which two pillar members stopped. It is a figure showing the state where two pillar members moved relatively. It is a front view which shows another example of a trigger mechanism. It is a front view which shows another example of a trigger mechanism. It is a perspective view which shows the example of a shape of the trigger mechanism at the time of seeing FIG. 1a from II direction. It is a perspective view which shows another example of a shape of a trigger mechanism. It is a perspective view which shows another example of a shape of a trigger mechanism. It is a perspective view which shows another example of a shape of a trigger mechanism. It is explanatory drawing which shows the example whose cross-sectional shape of a seismic isolation column is a square. It is explanatory drawing which shows the example whose cross-sectional shape of a seismic isolation column is a rectangle. It is explanatory drawing which shows the example whose cross-sectional shape of a seismic isolation column is a regular octagon. It is explanatory drawing which shows the example whose cross-sectional shape of a seismic isolation column is an elongate octagon. It is a front view which shows the seismic isolation structure of Example 2 of this invention. It is the top view which looked at FIG. 4a from the IVB-IVB direction. It is a front view which shows the modification of the seismic isolation structure of FIG. 4a which is Example 2 of this invention. It is the top view which looked at FIG. 5a from the VB-VB direction. It is a front view which shows the seismic isolation structure of Example 3 of this invention. It is a front view which shows the modification of FIG. It is a front view which shows the seismic isolation structure of Example 4 of this invention. It is a front view which shows the modification of FIG. It is explanatory drawing at the time of providing the example of the structure to which the seismic isolation structure of this invention is applied, and also providing the seismic isolation structure between the two members which are the pillars of a structure. It is explanatory drawing at the time of providing a seismic isolation structure between the two members which are the beams of a structure. It is a front view of the three-dimensional warehouse which is an example of the structure to which the seismic isolation structure of this invention is applied. It is a side view of the three-dimensional warehouse of FIG. 9a. It is explanatory drawing for demonstrating the effect | action of the structure which is not provided with the seismic isolation structure. It is explanatory drawing for demonstrating the effect | action of the structure provided with the one-stage seismic isolation structure. It is explanatory drawing for demonstrating an effect | action of the structure provided with the two-stage seismic isolation structure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  9a and 9b show a three-dimensional warehouse 100 as an example of a structure to which the seismic isolation structure of the present invention is applied, and this three-dimensional warehouse 100 shows a case of an automatic warehouse. The three-dimensional warehouse 100 has a configuration in which a plurality of racks 3 (shelves) are three-dimensionally assembled by including a plurality of steel pillars 1 and a plurality of steel beams 2. The three-dimensional warehouse 100 is erected with the stacker crane 4 interposed therebetween, and the three-dimensional warehouse 100 has a length extending along the traveling direction of the stacker crane 4 and is orthogonal to the traveling direction of the stacker crane 4. Has a narrow width corresponding to the size of the load to be stored. The plurality of pillars 1 constituting the three-dimensional warehouse 100 have high strength to support the weight of the load stored in the rack 3.

  The seismic isolation structure 5 of the present invention is provided for each of the plurality of pillars 1 constituting the three-dimensional warehouse 100 shown in FIGS. 9a and 9b. The seismic isolation structure 5 is provided at the same height position of each pillar 1 provided in the three-dimensional warehouse 100 as shown in FIGS. 9a and 9b.

  The seismic isolation structure 5 has a height position of about 1/3 to 1/2 from the upper side of the three-dimensional warehouse 100 in order to prevent the upper side of the three-dimensional warehouse 100 from locking up. Is installed. Thus, even if the seismic isolation structure 5 is installed in the upper part of the three-dimensional warehouse 100, the seismic isolation structure 5 reduces the upper side of the seismic isolation structure 5, and as a result, the seismic isolation structure 5 does not. The inventor's research has revealed that the shaking of the lower structure is also reduced.

  As shown in FIGS. 1a and 1b, the pillar 1 constituting the three-dimensional warehouse 100 includes a lower pillar member 1A (first member) having a plate-like member 12 at the upper end and a plate-like member 12 ′ at the lower end. The upper column member 1B (second member) is provided, and the two column members 1A and 1B have opposite flat plate members 12 and 12 'having horizontal and flat end surfaces 6 and 7, respectively. . Between the plate-like members 12 and 12 ′ provided in the two column members 1A and 1B, a seismic isolation column 10 for isolating the column 1 of the three-dimensional warehouse 100 by tilting is disposed so as to freely tilt. At the one end and the other end of the seismic isolation column 10, flat contact surfaces 8 and 9 that can contact the flat end surfaces 6 and 7 are formed. The two column members 1A and 1B and the seismic isolation column 10 are hollow or solid square steel having a rectangular horizontal cross section. The two column members 1A and 1B and the seismic isolation column 10 are not limited to square steel materials, but may be H-type steel materials, I-type steel materials, Z-type steel materials, and cylindrical steel materials.

  The abutment surface 8 of the one end 10a of the seismic isolation column 10 and the abutment surface 9 of the other end 10b of the seismic isolation column 10 are the end surfaces 6 of the plate-like members 12 and 12 ′ provided in the two column members 1A and 1B. , 7, the two column members 1 </ b> A, 1 </ b> B and the seismic isolation column 10 are held in a straight line state.

  Between the plate-like members 12, 12 ′ and the seismic isolation column 10 is a latch that restrains the horizontal displacement of the seismic isolation column 10 and forms a fulcrum E when the seismic isolation column 10 starts to tilt. A trigger mechanism 11 is provided that is provided with a mechanism (stopper member) so as to exhibit a trigger function. The trigger mechanism 11 shown in FIGS. 1a and 1b includes flat end surfaces 6 and 7 provided on two column members 1A and 1B, and the flat end surfaces 6 and 7 disposed between the two column members 1A and 1B. The base isolation column 10 having flat contact surfaces 8 and 9 to be crimped to each other, and the one end 10a and the other end 10b of the base isolation column 10 from the two column members 1A and 1B through the plate members 12 and 12 '. It is comprised by the stopper member 13 which protruded so that the edge part which might be may be enclosed from a horizontal direction. Further, the stopper member 13 shown in FIGS. 1 a and 1 b is inclined so as to form a clearance 14 that is separated from the seismic isolation column 10 as it is separated from the plate-like members 12 and 12 ′. The seismic isolation column 10 can tilt around the fulcrum E. Here, since the cross sections of the two column members 1A and 1B are rectangular, the fulcrum E is formed by the horizontal and straight edges of the flat contact surfaces 8 and 9 of the seismic isolation column 10. .

  In the embodiment of FIGS. 1a and 1b, two column members 1A and 1B, a seismic isolation column 10 disposed between the two column members 1A and 1B, two column members 1A and 1B, and a seismic isolation column. The base isolation structure 5 is configured by a trigger mechanism 11 provided between the base 10 and the trigger mechanism 11.

  However, instead of the seismic isolation structure 5, the plate-like members 12, 12 ′, the seismic isolation structure 5 disposed between the plate-like members 12, 12 ′, and the plate-like members 12, 12 ′ By using the trigger mechanism 11 provided between the seismic structure 5 and the seismic isolation structure, the seismic isolation structure 5 can be provided as a unit. The unitized seismic isolation structure 5 can be easily arranged by being incorporated in the middle of the column members 1A and 1B of the structure or between members such as the beams 2 and 2 constituting the structure. it can.

  According to the trigger mechanism 11, when the two column members 1 </ b> A and 1 </ b> B are relatively moved in the horizontal direction, the end edges of the end surfaces 6 and 7 of the seismic isolation column 10 come into contact with the inner surface of the stopper member 13. Thus, the seismic isolation column 10 is prevented from moving outward in the horizontal direction with respect to the two column members 1A and 1B. For this reason, the inner surface of the stopper member 13 and the end edges of the end surfaces 6 and 7 of the seismic isolation column 10 serve as fulcrums E, and the seismic isolation column 10 starts to tilt. In order to incline the seismic isolation column 10, as shown in FIGS. 1 a and 1 b, the plate-like members 12 and 12 ′ are separated from the inner surface of the stopper member 13 and the outer surface of the seismic isolation column 10. Therefore, instead of forming the clearance 14 that separates from the seismic isolation column 10, a predetermined clearance parallel to the outer surface of the seismic isolation column 10 may be provided between the seismic isolation column 10 and the stopper member 13.

  FIGS. 1 c and 1 d show another example of the trigger mechanism 11. Since the trigger mechanism 11 is arranged to have a vertically symmetrical shape, only the trigger mechanism 11 provided between the lower end of the seismic isolation column 10 and the lower column member 1A is shown in FIGS. 1c and d. Show. The trigger mechanism 11 of FIG. 1c forms a stopper member 13 composed of a protruding portion protruding from the plate member 12 so as to form a clearance 14 ′ parallel to the outer surface of the base isolation column 10, and the base isolation column. A convex portion 26 protrudes from the outer periphery of one end 10a (lower end) of the ten. Accordingly, the seismic isolation column 10 is prevented from moving in the horizontal direction when the convex portion 26 abuts against the stopper member 13, and the seismic isolation column 10 can start to tilt with the convex portion 26 as a fulcrum E. It has become. The convex portion 26 may be provided on the inner surface of the stopper member 13 near the upper surface of the plate-like member 12 provided on the column member 1A. A plurality of the convex portions 26 may be provided around the seismic isolation column 10 at intervals, or may be provided continuously in an annular shape around the seismic isolation column 10.

  Further, the trigger mechanism 11 of FIG. 1d is a tension member that protrudes outward with respect to one end of the column member 1B when the stopper member 13 is provided so as to form a clearance 14 ′ parallel to the outer surface of the seismic isolation column 10. A protruding portion 10 '(flange portion) is provided. Accordingly, the seismic isolation column 10 is prevented from moving in the horizontal direction by the outer end of the overhanging portion 10 ′ coming into contact with the stopper member 13, and the seismic isolation column 10 is supported by the overhanging portion 10 ′. The inclination can be started with the outer end as a fulcrum E. 1c and 1d show the case where the stopper member 13 is provided so as to form a clearance 14 'parallel to the outer surface of the seismic isolation column 10, but as shown in FIG. You may incline so that a space | interval may open toward the longitudinal direction center side of the seismic isolation column 10. FIG.

  Further, a sheet-like elastic material 28 made of a thin rubber material or the like may be interposed between the end surfaces 6 and 7 of the plate-like members 12 and 12 'and the contact surfaces 8 and 9 of the seismic isolation column 10. Good.

  2a to 2d show examples of the shape of the stopper member 13 constituting the trigger mechanism 11 provided between the two column members 1A and 1B and the seismic isolation column 10. FIG. Since the stopper member 13 constituting the trigger mechanism 11 provided on the two column members 1A and 1B has a vertically symmetrical shape, it is provided on the plate-like member 12 of the lower column member 1A in FIGS. Only the stopper member 13 is shown.

  2a shows a case where a stopper member 13 protruding so as to surround the entire outer periphery of the one end 10a of the seismic isolation column 10 is provided as in FIG. 1a, and FIG. FIG. 2c shows the case where the stopper member 13 ′ is provided only on the four corner portions of the plate-like member 12, and FIG. 2c shows the case where the stopper member 13 ″ is provided only on the four side portions of the plate-like member 12. Shows the case. FIG. 2 d shows a case where the stopper member 13 by the protrusion 15 that is a stud member is provided so as to surround the outer periphery of the one end 10 a of the seismic isolation column 10 with respect to the plate-like member 12.

In the embodiments of FIGS. 1a to 1d and FIGS. 2a to 2d, the case where the stopper member 13 as the trigger mechanism 11 is provided in the two column members 1A and 1B has been described. The seismic isolation column 10 may be provided at one end 10a and the other end 10b.
<Setting the width and depth of the seismic isolation column>

  Increasing the width or depth of the pillar 1 of the base isolation structure 5 can be used to increase the trigger load of the base isolation structure 5 and increase the rigidity of the base isolation structure 5.

  3a to 3d show the cross-sectional shape of the seismic isolation column 10, and the cross-sectional shape of the seismic isolation column 10 represents the shape of the contact surfaces 8 and 9 of the end portions 10a and 10b. . FIG. 3a shows a case where the cross-sectional shape of the seismic isolation column 10 is a square in which the width B1 and the depth B2 are the same in the horizontal biaxial direction (X, Y), and FIG. This shows a case in which the cross-sectional shape is a rectangle with different widths B1 and B2 in the horizontal biaxial direction (X, Y). Further, the cross-sectional shape of the seismic isolation column 10 may have a regular octagonal shape shown in FIG. 3c in which the four corners of the square in FIG. 3a are cut, or FIG. 3d in which the rectangular four corners in FIG. It may have an elongated octagonal shape as shown in FIG. The cross-sectional shape of the seismic isolation column 10 may be a polygon such as a hexagon other than the above shape, or may be a circle or an ellipse.

  The above embodiment operates as follows.

  FIG. 1a shows the column 1 in a stationary state, and the load applied to the upper column member 1B includes the flat end surface 7 of the column member 1B, the flat contact surface 9 of the seismic isolation column 10, and It is transmitted to the lower column member 1A through the flat contact surface 8 of the seismic isolation column 10 and the flat end surface 6 of the column member 1A, and the column 1 maintains a straight state.

  Further, in FIG. 1a, even when a relatively small acceleration S1 is generated in the horizontal direction in the column 1 due to the occurrence of an earthquake, the column 1 maintains a straight state.

  That is, the end surface 7 of the column member 1B and the abutment surface 9 of the seismic isolation column 10 are abutted and pressed by the load applied to the column 1, and the abutment surface 8 of the seismic isolation column 10 and the end surface of the column member 1A. 6 is abutted and pressed. At this time, since the column members 1A and 1B are provided with the stopper member 13 surrounding the outer periphery of the one end 10a and the other end 10b of the base isolation column 10, the base isolation column 10 is prevented from moving outward in the horizontal direction. The Therefore, even when a relatively small acceleration S1 is generated in the horizontal direction due to a small-scale earthquake, the trigger for the contact surfaces 8 and 9 of the seismic isolation column 10 and the end surfaces 6 and 7 of the column members 1A and 1B to contact each other. The seismic isolation column 10 cannot be inclined due to the function, and the column 1 is held in a straight state. At this time, if the size of the width B1 and the depth B2 at which the contact surfaces 8 and 9 of the seismic isolation column 10 and the end surfaces 6 and 7 of the column members 1A and 1B contact each other is changed as shown in FIGS. The trigger load magnitude at which 10 begins to tilt can be varied. When the width B1 and the depth B2 are set large, the trigger load at which the seismic isolation column 10 starts to tilt increases.

  On the other hand, when a large earthquake S2 occurs in the horizontal horizontal direction as shown in FIG. 1b due to the occurrence of a large-scale earthquake, the column members 1A and 1B are relatively moved in the horizontal direction. At this time, the one end 10a and the other end 10b of the seismic isolation column 10 cannot move because the end edges of the contact surfaces 8 and 9 are in contact with the inner surface of the stopper member 13, so that the end surfaces 6 and 7 and the contact surfaces 8 and 9 are not moved. When a load exceeding the trigger load range due to the abutment is applied to the seismic isolation column 10, the seismic isolation column 10 is inclined with the edges of the abutment surfaces 8 and 9 as fulcrums E as shown in FIG. To start. As the seismic isolation column 10 is tilted in this way, a large acceleration S2 in the horizontal and horizontal directions is isolated. Further, even when a large acceleration S2 shakes in the horizontal depth direction, the seismic isolation column 10 is similarly tilted in the depth direction so that the large acceleration S2 shake in the horizontal depth direction is isolated. At this time, if the size of the width in the left-right direction and the size in the depth direction of the contact surfaces 8 and 9 are set large, the seismic isolation column 10 becomes difficult to tilt in the left-right direction and depth direction, so a large trigger load is set. be able to. Thus, by providing the seismic isolation structure 5 with a simple configuration, it is possible to effectively isolate the vibration acting on the pillar 1 of the three-dimensional warehouse 100 (structure) in the horizontal biaxial direction.

  As described above, since the seismic isolation column 10 tilted by the earthquake acts to return the tilt around the fulcrum E, the two column members 1A and 1B and the seismic isolation column 10 are It is restored to a straight state as shown in FIG.

  As shown in FIGS. 1a to 1d, a stopper member 13 protruding from the plate-like member 12 provided on the two column members 1A and 1B so as to surround one end 10a and the other end 10b of the seismic isolation column 10 is provided. Since the trigger mechanism 11 that prevents the seismic column 10 from moving in the horizontal direction and starts the tilt of the seismic isolation column 10 by the fulcrum E is provided, the column 1 is horizontally placed by the trigger mechanism 11 having a simple configuration. It becomes possible to perform seismic isolation effectively in the biaxial direction.

  For example, when storing a load in an automatic warehouse that is a three-dimensional warehouse 100, a direction in which a large shaking load is applied or a distance from an adjacent structure is close, and a direction in which the seismic isolation structure 5 is not desired to be operated in a small-scale earthquake. On the other hand, the trigger load at which the seismic isolation column 10 of the base isolation structure 5 starts to tilt can be set large by increasing the size B in the direction in which the base isolation structure 5 is not desired to be operated. That is, as shown in FIGS. 3a and 3c, when the cross-sectional shape of the seismic isolation column 10 is the same when the width B1 in the horizontal biaxial direction (X, Y) and the size B in the depth B2 are the same. The same trigger load can be set in the axial direction (X, Y). As shown in FIGS. 3b and 3d, when the cross-sectional shape of the seismic isolation column 10 is set such that the width B1 and the depth B2 in the horizontal biaxial directions (X, Y) are different from each other, the horizontal shape is horizontal. The trigger load in the biaxial direction (X, Y) can be set differently.

  In the trigger mechanism 11 shown in the above embodiment, the two column members 1A and 1B and the seismic isolation column 10 are held in a straight line by the contact between the flat end surfaces 6 and 7 and the flat contact surfaces 8 and 9. Furthermore, when the two column members 1A and 1B move relative to each other in the horizontal direction, the one end 10a and the other end 10b of the seismic isolation column 10 move outward in the horizontal direction with respect to the two column members 1A and 1B. Is prevented by the stopper member 13. For this reason, the seismic isolation column 10 comes to incline around the fulcrum E, whereby the structure can be effectively isolated in the horizontal biaxial direction by the seismic isolation structure 5 having a simple configuration. That is, seismic isolation is possible in all horizontal directions crossing the horizontal biaxial directions (X, Y).

  Here, when a sheet-like elastic material 28 formed of thin rubber or the like is installed between the end faces 6 and 7 of the plate-like members 12 and 12 ′ and the contact surfaces 8 and 9 of the seismic isolation column 10, The impact contact load between the shaped members 12, 12 ′ and the seismic isolation column 10 can be suppressed. The sheet-like elastic material 28 can use a foam material instead of a rubber material. In this case, the restoring force is smaller than that of the rubber material, but it can be expected to increase the effect of suppressing the contact load.

  4a and 4b show a seismic isolation structure according to Embodiment 2 of the present invention. The trigger mechanism 11 shown in FIGS. 4a and 4b is provided on a projecting portion 27 (flange portion) projecting outward from one end 10a and the other end 10b of the seismic isolation column 10 and the plate-like members 12 and 12 ′. The stopper member 13 having a required length surrounds the outer periphery of the protruding portion 27 with a clearance. The stopper member 13 shown in FIGS. 4a and 4b has a cylindrical shape with a rectangular cross section. Reference numeral 23 denotes a reinforcing bracket. The stopper member 13 forms a tilt angle limiting member 24 by having a protruding length J that contacts the seismic isolation column 10 at a position corresponding to the tilt angle at which the seismic isolation column 10 can return with its own weight. .

  5a and 5b show a seismic isolation structure which is a modification of FIG. 4a and FIG. 4b of the second embodiment. The trigger mechanism 11 shown in FIGS. 5a and 5b has a plate-like member 12, 12 ′ and a flange-like shape fixed to the plate-like member 12, 12 ′ and provided at one end 10a and the other end 10b of the seismic isolation column 10. And a stopper member 13 having a required length protruding so as to surround the outer periphery of the overhanging portion 27. The stopper member 13 shown in FIGS. 5a and 5b is made of a steel material having a U-shaped cross section, and is arranged symmetrically so as to sandwich the protruding portion 27 from the front and rear and from the left and right. The stopper member 13 has a web surface that is close to the overhanging portion 27 at a fixed portion with respect to the plate-like members 12 and 12 ′. An inclined surface 25 is formed so as to increase the interval of. The stopper member 13 forms a tilt angle limiting member 24 by having a protruding length J that contacts the seismic isolation column 10 at a position corresponding to the tilt angle at which the seismic isolation column 10 can return with its own weight. .

  4a, 4b, 5a, and 5b, since the tilt angle limiting member 24 having the protruding length J is constituted by the stopper member 13, the seismic isolation column is formed by the tilt angle limiting member 24. It can restrict | limit that 10 inclines more than the inclination angle which can return with dead weight.

  Also in the second embodiment shown in FIGS. 4a, 4b, 5a and 5b, the plate-like members 12, 12 ′, the stopper member 13 provided on the plate-like members 12, 12 ′, and the seismic isolation column 10 are provided. The seismic isolation structure 5 including the trigger mechanism 11 can be unitized independently from the structure to be seismically isolated, and the unitized seismic isolation structure 5 includes the column members 1A and 1B of the structure, It can be easily assembled and arranged in the beam 2 or the like.

  6a and 6b show another embodiment of the seismic isolation structure 5 provided in the pillar 1 constituting the three-dimensional warehouse 100. FIG. The seismic isolation structure 5 shown in FIGS. 6a and 6b includes a convex portion 20 provided at the center of one of the end surfaces 6 and 7 of the two column members 1A and 1B and the contact surfaces 8 and 9 of the seismic isolation column 10; A stopper member 13 is provided that includes end surfaces 6 and 7 of the two column members 1A and 1B and a recess 21 provided at the other center of the contact surfaces 8 and 9 of the seismic isolation column 10 so as to be fitted to the convex portion 20. The trigger mechanism 11 is configured. In FIG. 6a, a convex portion 20 is provided on the contact flange 17 of the seismic isolation column 10, and the convex portion 20 is fitted in a concave portion 21 formed by column members 1A and 1B made of square pipes. The convex portion 20 and the concave portion 21 may have a truncated pyramid shape or a truncated cone shape. On the other hand, in FIG. 6b, the case where the convex part 20 is provided in the plate-like members 12 and 12 'of the column members 1A and 1B and the concave part 21 is provided in the seismic isolation column 10 is shown. In the embodiment shown in FIGS. 6a and 6b, the convex portion 20 and the concave portion 21 of the trigger mechanism 11 also serve as an alignment mechanism.

  In the embodiment of FIGS. 6a and 6b, the plate members 12 and 12 ′ of the column members 1A and 1B have a shape protruding outward with respect to the contact flange 17 of the seismic isolation column 10. Thus, a fulcrum E where the seismic isolation column 10 starts to tilt is formed around the plate-like members 12 and 12 ′ of the column members 1A and 1B. 6A and 6B show the case where the plate-like members 12 and 12 ′ protrude outward from the contact flange 17 and the fulcrum E is formed by the outer periphery of the contact flange 17. , 12 ′, the contact flange 17 may protrude outward, and the fulcrum E may be formed by the outer periphery of the plate-like members 12, 12 ′.

  According to the embodiment of FIGS. 6a and 6b, when the column members 1A and 1B move relative to each other in the horizontal direction, they are provided between the two column members 1A and 1B and the seismic isolation column 10 to be fitted. The seismic isolation column 10 is prevented from moving outward in the horizontal direction by the stopper member 13 composed of 20 and the recess 21. Further, when a large shake that moves the two column members 1A and 1B relative to each other due to a large-scale earthquake acts, the convex portion 20 and the concave portion 21 serve as a guide, and the seismic isolation column 10 is centered on the fulcrum E by the contact flange 17. A tilt function is started and a trigger function is generated, so that the vibration acting on the column 1 is isolated.

  In the embodiment of FIGS. 6 a and 6 b, the two column members 1 </ b> A and 1 </ b> B or the seismic isolation column 10 can be used as the recess 21, so that the configuration of the seismic isolation structure 5 can be simplified. Further, since the fulcrum E can be arbitrarily extended outward from the seismic isolation column 10 by the contact flange 17 and the plate-like members 12, 12 ', the seismic isolation column 10 starts to tilt with a simple configuration. The trigger load can be increased.

  In addition, as described above, since the convex portion 20 and the concave portion 21 also serve as an alignment mechanism, there is a displacement in the horizontal direction between the two column members 1A, 1B and the seismic isolation column 10. Even in this case, when the tilted seismic isolation column 10 is restored, the two column members 1A and 1B and the seismic isolation column 10 are adjusted to a certain position and restored. The alignment mechanism including the convex portion 20 and the concave portion 21 shown in FIGS. 6a and 6b can be applied to other embodiments.

  FIGS. 7 a and 7 b show another embodiment of the seismic isolation structure 5 provided in the pillar 1 constituting the three-dimensional warehouse 100. The seismic isolation structure 5 shown in FIGS. 7a and 7b has plate-like members 12 and 12 provided at the upper end of the lower column member 1A and the lower end of the upper column member 1B in the same configuration as in FIGS. 6a and 6b. , And the contact flange 17, the trigger addition member that elastically connects the end surfaces 6 and 7 of the two column members 1 </ b> A and 1 </ b> B and the contact surfaces 8 and 9 of the seismic isolation column 10 in close contact with each other. A trigger mechanism 11 having 18 is configured. The trigger adding member 18 may include a restoring spring 19 (elastic body) such as a disc spring shown in the figure.

In the trigger mechanism 11 of the embodiment shown in FIGS. 7a and 7b, a restoring spring that attracts the end surfaces 6 and 7 of the two column members 1A and 1B and the contact surfaces 8 and 9 of the seismic isolation column 10 in close contact with each other. Since the trigger addition member 18 according to FIG. 19 is provided, the trigger load at which the seismic isolation column 10 starts to tilt around the fulcrum E is increased as compared with the cases of FIGS. 1a to 1d, 6a, and 6b. Become. Furthermore, the trigger load can be adjusted by selecting the pulling strength of the restoring spring 19. Moreover, the natural period when the seismic isolation column 10 tilts can be adjusted by selecting the attractive strength of the restoring spring 19.
<About trigger acceleration setting>

α：トリガ震度（重力加速度を１とした無次元数）
Ｈ：免震柱１０の高さ
Ｎ：柱１の数
Ｍ：免震装置より上部の質量
ｇ：重力加速度
ｆ_Ｏ：復元ばねに与えた初期荷重
Ｂ：柱の幅Ｂ１及び奥行きＢ２の大きさMoment M _P when the MenShinhashira 10 when the applied shaking load horizontally begin inclination to MenShinhashira 10 is expressed by the following equation.

α: Trigger seismic intensity (dimensionless number with gravitational acceleration as 1)
H: Height of the seismic isolation column 10 N: Number of columns 1 M: Mass above the seismic isolation device g: Gravitational acceleration f _O : Initial load applied to the restoring spring B: Column width B1 and depth B2

This formula is summarized as follows with the size B of the column width B1 and the depth B2.

From the above equation, the corresponding trigger acceleration α can be set larger as the width B1 and the depth B2 of the cross-sectional area of the pillar 1 constituting the seismic isolation structure 5 are larger. When the depth B2 of the cross-sectional area of the column 1 is increased, the trigger acceleration α that can be handled in the depth direction can be set large.
<Increase in rigidity of seismic isolation structure>

ｋ_Ｏ：復元ばねの係数
Ｂ：当接フランジ１７の当接面８，９の幅の大きさ
Ｌ：復元ばね１９の間隔
Ｈ：免震柱１０の高さ
Ｎ：柱１の数
Ｍ：免震装置より上部の質量The natural frequency F (Hz) of the seismic isolation structure 5 having the trigger mechanism 11 having the restoring spring 19 is given by the following equation. Hereinafter, in order to simplify the description, the case of the width B and the depth B of the contact flange 17 will be described.

k _O : coefficient of the restoring spring B: width of the contact surfaces 8 and 9 of the contact flange 17 L: distance between the restoring springs 19 H: height of the seismic isolation column 10: number of columns 1 M: Mass above the seismic device

From the above equation, when the coefficient k _O of the restoring spring 19 installed in the seismic isolation structure 5 is increased, both the natural frequencies in the horizontal biaxial direction (X, Y) are increased. On the other hand, since the size B of the contact surfaces 8 and 9 of the contact flange 17 provided in the seismic isolation column 10 can be set separately in the horizontal biaxial direction, it is desired to increase or decrease the rigidity of the seismic isolation structure 5. The natural frequency can be arbitrarily set by adjusting the magnitude B of the direction.

  Therefore, in the embodiment of FIGS. 7a and 7b, the restoring spring 19 has a trigger function based on the width B1 and the depth B2 of the contact surfaces 8, 9 of the contact flange 17 provided in the seismic isolation column 10. When the trigger load by the trigger addition member 18 is applied, the trigger load when the seismic isolation column 10 starts to tilt can be set to a large value.

  For example, since there is a connection with piping or an adjacent structure in the structure, if there is a portion where it is difficult to reinforce with braces or the like and the rigidity is reduced, deformation at the time of occurrence of an earthquake is considered to be large. For such a portion having low rigidity, the width B1 and the depth B2 of the contact surfaces 8, 9 of the contact flange 17 provided in the base isolation column 10 are increased to increase the rigidity of the base isolation structure 5. By increasing the value, it is possible to suppress the problem that the structure is largely deformed locally during the action of a load caused by an earthquake.

  8a and 8b show examples of structures to which the seismic isolation structure of the present invention is applied and places where the seismic isolation structure of the present invention is applied to the structures. 8a and 8b, the seismic isolation structure 5 of the present invention includes the three-dimensional warehouse 100, the boiler equipment 101, the three-dimensional parking equipment 102, the crane, and the unloader shown in FIGS. 9a and 9b. The present invention can be applied to the pillar 1 constituting a structure such as a cargo handling facility 103 such as a conveyor device. As shown in FIG. 8 a, the seismic isolation structure 5 can be provided in the middle of the pillar 1 constituting the structure, or can be provided between the lower end of the pillar 1 and the foundation G. Moreover, the said seismic isolation structure 5 can be provided between the members which consist of the beams 2 and 2 which comprise a structure, as shown in FIG. 8b.

  Next, with reference to FIG. 10a-FIG. 10c, the case where the multi-stage seismic isolation structure 5 is provided in the pillar 1 of the structure is demonstrated. 10a shows a three-dimensional warehouse 100 that does not include the seismic isolation structure 5, FIG. 10b shows a case of the three-dimensional warehouse 100 that includes one stage of the base isolation structure 5, and FIG. 10c includes a two-stage seismic isolation structure 5. The case of the three-dimensional warehouse 100 is shown in comparison. As shown in FIG. 10a, in the three-dimensional warehouse 100 that does not have the seismic isolation structure 5, when the foundation is shaken due to the earthquake, the vibration transmitted to the three-dimensional warehouse 100 becomes a larger acceleration toward the upper part, and the upper end shakes very much. Become bigger.

  On the other hand, as shown in FIG. 10 b, in the three-dimensional warehouse 100 including the one-stage seismic isolation structure 5, for example, the deformation amount δ can be absorbed by the seismic isolation function of the seismic isolation structure 5, so Therefore, the shaking of the upper part of the three-dimensional warehouse 100 is reduced. Further, as shown in FIG. 10c, in the three-dimensional warehouse 100 in which the pillar 1 is provided with the upper and lower two-stage seismic isolation structure 5, the deformation up to the deformation amount 2δ is exempted by the seismic isolation action of the two-stage seismic isolation structure 5. Since it can be tolerated as a seismic device, it can be used as a seismic isolation device even for large-scale earthquakes with greater shaking. Therefore, even if the seismic isolation structure 5 has a small seismic isolation function, by providing the seismic isolation structure 5 in multiple stages, as shown in FIG. can do.

  In addition, the seismic isolation structure of the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention.

1A Column member (first member)
1B Column member (second member)
2 Beam (member)
5 seismic isolation structure 6 end surface 7 end surface 8 abutment surface 9 abutment surface 10 seismic isolation column 10a one end 10b other end 11 trigger mechanism 12 plate member 12 'plate member 13 stopper member 13' stopper member 13 '' stopper member 15 Protrusion (protrusion)
18 Trigger addition member 19 Restoring spring (elastic body)
20 Convex part (stopper member)
21 Recess (stopper member)
24 Inclination angle limiting member E Support point 100 Three-dimensional warehouse 101 Boiler equipment 102 Three-dimensional parking equipment 103 Cargo handling equipment

Claims (12)

A flat end surface is disposed between two opposing members, and a flat contact surface to be crimped to the flat end surface is formed at one end and the other end, and the contact surface is inclined from the state in which the contact surface is crimped to the end surface It has a capable MenShinhashira,
Provided on at least one of the two members and the seismic isolation column and projecting so as to surround at least one of the contact surface and the end surface from the horizontal direction, and when the two members move relative to each other in the horizontal direction, It has a stopper member that prevents the seismic column from moving in the horizontal direction, and forms a fulcrum at which the seismic isolation column starts tilting from the state where the end surface and the contact surface are crimped,
A trigger mechanism is configured by the flat end surfaces of the two members, the flat abutting surfaces of the seismic isolation columns crimped to the end surfaces, and the stopper member forming the fulcrum. Seismic structure. A flat end surface is disposed between two opposing members, and a flat contact surface to be crimped to the flat end surface is formed at one end and the other end, and the contact surface is inclined from the state in which the contact surface is crimped to the end surface Have seismic isolation columns
Contact flanges provided on at least one of the end surfaces of the two members and the contact surface of the seismic isolation column, and provided on the other of the end surfaces of the two members and the contact surface of the seismic isolation column A plate-like member protruding outward from the contact flange;
  A convex portion provided at the center of at least one of the abutting flange and the plate-like member, and a concave portion provided at the other center of the abutting flange and the plate-like member and fitted with the convex portion. A stopper member for preventing the seismic isolation column from moving in the horizontal direction when the two members move in the horizontal direction;
  From the end surface and the contact surface on which the contact flange and the plate-like member are pressure-bonded to each other, a fulcrum formed by the outer periphery of the contact flange to be pressure-bonded to the plate-like member, and the convex portion and the concave portion The trigger mechanism is composed of the stopper member
Seismic isolation structure characterized by that. Seismic isolation structure according to claim 1 or 2, characterized in that two of said member is a pillar member. Seismic isolation structure according to claim 1 or 2, characterized in that two of said members is a beam. The fulcrum is formed by the stopper member and the end edge of the flat end surface of the two members or the end edge of the flat contact surface of the seismic isolation column. Seismic isolation structure. The seismic isolation system according to claim 2, wherein the fulcrum is formed by an outer periphery of a contact flange that is crimped to the plate-like member in a state where the convex portion and the concave portion of the stopper member are fitted. Construction. The stopper member is provided with a protruding portion having a protruding length in contact with the base isolation column or the two members at a position corresponding to an inclination angle at which the base isolation column can return with its own weight. The seismic isolation structure according to claim 1 , wherein The trigger mechanism, to claim 1 or 2, characterized in that an elastic body, wherein by connecting the the two said members MenShinhashira elastically MenShinhashira can adjust the trigger load to start tilt The seismic isolation structure described.   2. The immunity according to claim 1, wherein the flat end surfaces of the two members and the flat contact surfaces of the seismic isolation columns have different widths and depths in the horizontal biaxial direction. Seismic structure. The trigger that the fulcrum formed between the two members and the seismic isolation column is provided at a position projecting outward of the two members and the seismic isolation column in the horizontal direction, and the seismic isolation column starts to tilt The seismic isolation structure according to claim 2 , wherein the load is increased.   A structure comprising the seismic isolation structure according to any one of claims 1 to 10.   The structure according to claim 11, wherein the structure is a three-dimensional warehouse having a seismic isolation structure.

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