JP6502290B2 - Seismic isolation floor - Google Patents

Description

  The present invention relates to a seismic isolation floor covering clearances provided inside and outside of a seismic isolation structure.

  A clearance is provided around the outer groove around the connection between the seismic isolation structure and the non-seismic isolation structure, around the elevator shaft, and the like. The seismic isolation floor installed to cover this clearance plays a role in following or absorbing the shaking during the earthquake. In order to allow the seismic isolation floor to play such a role, the seismic isolation floor passed in the clearance width direction is made slidable in the clearance longitudinal direction.

  In Patent Document 1, as a sliding mechanism of the seismic isolation floor, a slider is provided on a cover body covering the clearance, and the slider is slidably supported by a rail member fixed to a housing. The slider is a square pipe fixed to the cover body, and the base isolation layer is slidably supported by sliding the slider on the rail member.

  Moreover, in patent document 2, a guide roller is used as a slide mechanism. When the guide rollers roll on the guide rails fixed to the housing, the seismic isolation floor slides.

Patent No. 4012786 JP, 2002-173989, A

  Since the above-mentioned slider is mounted on the rail member, the frictional resistance is large, and the slider does not move smoothly even if there is strong shaking. Therefore, it is not possible to follow a violent movement, and it becomes impossible to exhibit the function of seismic isolation. On the other hand, the guide roller can follow violent movements and can play a role in seismic isolation. However, if foreign matter such as sand or dust enters the guide rail, the foreign matter may adhere to the surface of the guide roller and bite may occur. Then, the guide roller does not roll, the movement of the seismic isolation floor becomes jerky, and the seismic isolation function can not be sufficiently exhibited.

  SUMMARY OF THE INVENTION In view of the above, the present invention aims to provide a seismic isolation floor that can slide smoothly at all times.

  The seismic isolation floor of the present invention is installed so as to cover the clearance provided in the seismic isolation structure, and one side in the clearance width direction is slidably supported by one frame in the clearance longitudinal direction, and the other side in the clearance width direction is A floor material movably mounted on the other housing and covering a clearance, a plurality of sliders attached to one side of the floor material, fixed to one housing and slidably supporting the sliders And a slide fixing frame. The slider is a washer attached to the floor material by a bolt, the washer is positioned with a gap from the side wall of the slide fixing frame, and the lower surface of the washer contacts the bottom surface of the slide fixing frame.

  The floor material slides relative to the housing by the washer sliding on the slide fixing frame. At this time, even if there is foreign matter such as sand, the slider pushes and moves the foreign matter while separating the foreign matter, so the slider slides smoothly.

  The slider is configured by stacking different sized washers, and the lowermost washer contacting the bottom surface of the slide fixing frame has a smaller diameter than the upper washer. By the structure of such a slider, a gap is formed on the side of the lowermost washer, and foreign matter that interferes with the slide can be eliminated in this gap.

  A slide member for holding the slider is provided on one side of the floor member so as to face the slide fixing frame, and a mounting portion projecting toward the slide fixing frame is formed on the slide member, and a washer is mounted on the lower side of the mounting portion The mounting portion of the slide material is disposed in non-contact with the slide fixing frame so as to close the slide fixing frame, and the inclination of the floor material is allowed until the side surface of the washer contacts the slide fixing frame when the floor material is inclined. Be done.

  Because there is a gap between the side of the washer and the side wall of the slide frame, the slider can tilt. By tilting the slider, the floor material can also be tilted about the slider. This allows the slider to tilt until it contacts the side wall of the slide fixing frame. The floor material tilts to an angle regulated by the slider, and can cope with vertical displacement.

  According to the present invention, by using a washer as a slider for sliding the floor material relative to the casing, the floor material can be smoothly slidable without being disturbed by foreign matter.

Cross sectional view of the seismic isolation floor of the present invention Top view of the seismic isolation floor (A) Cross section of floor material, (b) Cross section of floor material on the other side, (c) Cross section of intermediate floor material, (d) Cross section of floor material on one side Cross section near one side of floor material Cross section near the other side of the floor material

  The seismic isolation floor used for the seismic isolation structure of the present embodiment covers an outer groove formed around a seismic isolation structure such as a seismic isolation structure. That is, as shown in FIGS. 1 to 3, the seismic isolation floor 1 covers the clearance 4 formed between the two housings 2 and 3. One frame 2 is a seismic isolation structure, for example, a frame of a seismic isolation structure, and the other frame 3 is, for example, a flame or artificial ground of another structure. In this case, the seismic isolation floor 1 is a floor for walking.

  The clearance 4 is located on one side of the seismic isolation floor 1. One side in the clearance width direction of the seismic isolation floor 1 is slidably supported by one of the housings 2 in the clearance longitudinal direction, and the other side in the clearance width direction is movably mounted on the other housing 3. In the drawings, the X direction is the clearance width direction, the Y direction is the clearance longitudinal direction, and the Z direction is the vertical direction. Here, the width of the clearance 4 is 100 to 1200 mm, the width (length in the X direction) of the seismic isolation floor 1 is 200 to 2300 mm, and the movable amount of the seismic isolation floor 1 in the X direction is 100 to 1200 mm. The length (length in the Y direction) of the seismic isolation floor 1 can be set arbitrarily.

  The seismic isolation floor 1 includes a floor material 10 covering the clearance 4, a plurality of sliders 11 that allow one side of the floor material 10 to move in the Y direction, and a slide fixing frame 12 that slidably supports the sliders 11. The slide member 13 for providing the slider 11 to the floor member 10, the movable member 14 provided on the other side of the floor member 10, the base frame 15 for movably supporting the movable member 14, and the movable member 14 And a tip 16 for attachment to 10. The slide fixing frame 12 is fixed to one of the housings 2 and one side of the floor material 10 slides in the Y direction with respect to the one housing 2. The base frame 15 is fixed to the other housing 3, and the other side of the floor material 10 is movable in the X direction with respect to the other housing 3. Further, the movable member 14 is rotatably supported by the tip member 16 and the tip of the movable member 14 is movable in the Z direction.

  As shown in FIG. 3, the floor material 10 is a hollow aluminum extrusion formed long in the X direction. As shown in FIG. 3C, the convex portion 20 is formed on one side of the middle floor material 10 in the Y direction, and the concave portion 21 is formed on the other side. When the convex portion 20 of the floor material 10 is fitted into the recess 21 of the adjacent floor material 10, the two adjacent floor materials 10 are closely connected and connected, and the plurality of floor materials 10 are arranged in the Y direction. As shown in FIG. 3D, in the floor material 10a positioned on one side in the Y direction, the side reinforcing plate 22 made of a plated steel plate is covered on one side edge facing the outside, and the recess 21 is formed on the other side. Then, the convex portion 20 of the adjacent floor material 10 is fitted into the concave portion 21. Further, as shown in FIG. 3 (b), even in the floor material 10b positioned on the other side in the Y direction, the side reinforcing plate 22 made of a plated steel plate is covered on the other side edge facing the outside, and the convex portion on one side 20 are formed, and the concave portion 21 of the adjacent floor material 10 is fitted into the convex portion 20.

  The floor material 10 is movably supported by the other housing 3 via a frame 23. At the end of the other housing 3, the receiving edge 24 lowered in level is formed, and a plurality of steel frames 23 are provided on the receiving edge 24. The L-shaped frames 23 are formed long in the X direction, and a plurality of frames 23 are arranged at regular intervals along the Y direction. A plurality of L-shaped frame support members 25 are attached to the frame 23 by welding, and a steel frame support member 25 is fixed to the receiving edge 24 of the housing 3 by the anchors 26. The frame 23 is fixed to the housing 3 via the frame support 25. On the upper surface of the frame 23, a receiving plate 27 made of a rectangular plated steel plate is placed and screwed, and the frame 23 is covered with the receiving plate 27. The flat stainless steel thin flat plate 28 is attached to the lower surface of the floor material 10, and the entire lower surfaces of the plurality of floor materials 10 are covered by the thin flat plate 28. When the floor material 10 is placed on the frame 23, the thin flat plate 28 of the floor material 10 contacts the receiving plate 27 of the frame 23, and the other end side of the floor material 10 is movably supported by the frame 23.

  As shown in FIG. 4, the slider 11 is composed of a plurality of, for example, two washers 30 and 31 stacked. The two circular washers 30 and 31 have different sizes, the small washer 30 has a small diameter and a thin wall, and the large washer 31 has a large diameter and a thick wall. The small washers 30 are disposed at the lower side, and the large washers 31 are disposed at the upper side. The slider 11 is attached to the slide member 13. The slide material 13 is fitted and attached to the edge of one side of the floor material 10 in the X direction.

  The slide member 13 is an aluminum extrusion formed long in the Y direction, and the upper edge 32 and the lower edge 33 are formed. The upper edge portion 32 covers the upper surface of one side of the floor material 10 and is fixed to the floor material 10 by a countersunk drill screw 34. The lower edge portion 33 covers the lower surface on one side of the floor material 10 and is fixed to the floor material 10 by pan head drill screws 35. The floor material 10 is sandwiched from above and below by the upper edge 32 and the lower edge 33, and the slide material 13 is fixed to the floor material 10. A finishing material 36 such as a sheet or a stripe is provided on the top surface of the floor material 10, and the top surface of the slide material 13 is flush with the finishing material 36.

  The lower edge portion 33 is extended so as to protrude from the floor material 10, and a mounting portion 37 which protrudes to the slide fixing frame 12 side is formed. The slider 11 is attached to the lower side of the attachment portion 37. The countersunk bolt 38 inserted from below the small washer 30 penetrates the mounting portion 37, and the countersunk bolt 38 is tightened by the nut 39, and the two washers 30 and 31 are fixed to the slide member 13. The head of the countersunk bolt 38 does not protrude from the lower small washer 30, and a recess 40 is formed on the lower surface of the slider 11.

  The slide fixing frame 12 is provided on one of the housings 2 so as to face one side of the floor material 10 in the X direction. A receiving edge 41 lowered in level is formed at the end of the housing 2, and the slide fixing frame 12 is fixed to the receiving edge 41. The grooved slide fixing frame 12 is an aluminum extrusion formed long in the Y direction, and has a groove 42 for slidably supporting the slider 11 and a frame 43 for attaching to the housing 2. Have.

  The groove portion 42 is located below the attachment portion 37 of the slide member 13. The slider 11 is inserted into the groove 42 whose upper surface is opened, and the small washer 30 at the lower stage contacts the bottom of the groove 42. There is a gap 45 between the side wall 44 of the groove 42 and the side surface of the slider 11, and the slider 11 can slide without the side surface of the slider 11 contacting the groove 42. For example, the diameter of the small washer 30 is 20 mm, the diameter of the large washer 31 is 25 mm, and the width of the groove 42 is 26 mm. An upper gap of 0.5 mm is formed between the large washer 31 and the side walls 44 on both sides of the groove 42. Further, a wide lower gap 45a of 3 mm is formed between the small washer 30 and the side walls 44 on both sides. The mounting portion 37 of the slide member 13 is disposed in non-contact with the side wall 44 on one side of the groove 42 so as to close the groove 42. A gap 46 is formed between the mounting portion 37 and the side wall 44 of the groove 42, and the gap 46 is wider than the gap 45 between the slider 11 and the groove 42.

  The frame portion 43 is provided closer to the housing than the groove portion 42, and is formed in a groove shape with an open upper surface. The mortar 47 is filled between the receiving edge portion 41 of one of the housings 2 and the slide fixing frame 12, and the frame portion 43 placed on the mortar 47 is fixed to the receiving edge portion 41 by the anchor 48. The upper surfaces of the frame portion 43 and the groove portion 42 are covered by the cover member 49. The cover 49 is fixed to the upper edge 51 of the side wall 44 of the groove 42 by the countersunk drill screw 50, and one side of the cover 49 is locked to the upper edge 52 of the frame 43. The other side of the cover member 49 faces the slide member 13 with a gap 53 therebetween. The flange portion 54 is formed on the slide member 13 above the mounting portion 37, and foreign matter such as dust falling from the upper gap 53 is prevented from directly entering the groove portion 42. Moreover, the collar part 54 has an effect which prevents floating of the cover material 49 by the air pressure from the downward direction.

  As shown in FIG. 5, the tip end material 16 is an aluminum extrusion formed long in the Y direction, and the upper edge 60 and the lower edge 61 are formed. The upper edge portion 60 covers the upper surface of the other side of the floor material 10 and is fixed to the floor material 10 by a countersunk drill screw 62. The lower edge portion 61 covers the other lower surface of the floor material 10. The floor material 10 is sandwiched from above and below by the upper edge 60 and the lower edge 61, and the tip end material 16 is fixed to the floor material 10. The top surface of the tip 16 is flush with the finish 36 of the floor 10.

  A bearing portion 63 for rotatably supporting the movable member 14 is formed on the tip end member 16. The upper surface of the bearing 63 is open. The movable member 14 is an aluminum extrusion-formed member formed long in the Y direction, and the shaft portion 64 is formed on the other side of the movable member 14. The shaft portion 64 is formed in a circular cross section larger than the opening of the bearing portion 63. The shaft portion 64 is inserted into the bearing portion 63 from the side, and the movable member 14 is supported by the bearing portion 63 so that the shaft portion 64 is not pulled upward from the bearing portion 63. The other end of the movable member 14 is positioned above the upper edge 65 of the bearing portion 63, and the movable member 14 is positioned on the upper side until the other end of the movable member 14 contacts the upper edge 65 of the bearing portion 63. Rotate slightly in the direction. Therefore, the movable member 14 is rotatable around the shaft 64 within a restricted angle. When the movable member 14 is pivoted downward, the movable member 14 abuts on the opening edge 66 of the bearing portion 63, whereby the pivoting of the movable member 14 is restricted.

  The other side of the movable member 14 is placed on the base frame 15. The base frame 15 is an aluminum extrusion-formed material formed to be long in the Y direction, and is disposed to face the other side of the floor material 10 in the X direction. The base frame 15 is fixed by a screw 70 to a frame 23 installed on the other housing 3. The base frame 15 has a support portion 71 which movably supports the other side of the movable member 14.

  The upper surface of the support portion 71 is formed of a continuous plane of the first inclined surface 72, the horizontal surface 73, and the second inclined surface 74. When the movable member 14 is on the horizontal surface 73, the movable member 14 is held in a horizontal state, and the upper surface of the movable member 14 is the upper surface of the finish 36 on the floor 10 and the upper surface of the finish 75 provided on the casing 4 It will be the same as When the movable member 14 moves along the first inclined surface 72 toward the other side in the X direction, the movable member 14 ascends slightly while pivoting upward, and is mounted on the upper surface of the partition member 75 on the housing 4. When the movable member 14 moves along the second inclined surface 74 toward one side in the X direction, the movable member 14 pivots downward. Further, the movable member 14 is movable in the Y direction along the upper surface of the support portion 71.

  In the seismic isolation floor 1 configured as described above, the floor material 10 is supported by the slide fixing frame 12 via the slider 11 at one side in the X direction, and the floor material 10 is supported by the frame 23 at the other side in the X direction. The movable member 14 is supported by the base frame 15. Thus, the base isolation floor 1 is supported by the housings 2 and 3 on both sides, covering the clearance 4 so that there is no level difference normally.

  When shaking occurs due to an earthquake or the like, one housing 2 and the other housing 3 are relatively displaced. For example, in the case of displacement in the Y direction, when the slide fixing frame 12 fixed to one of the housings 2 is displaced with respect to the floor material 10, the slider 11 slides the groove 42 of the slide fixing frame 12. As a result, the floor material 10 slides in the Y direction with respect to the housings 2 and 3 on both sides, and the floor material 10 can follow the relative displacement of the housings 2 and 3, and is applied to the seismic isolation floor 1. The load can be reduced.

  Here, in the groove portion 42 of the slide fixing frame 12, there is a possibility that a foreign substance such as sand which has passed through the gap 46 between the attachment portion 37 of the slide material 13 and the side wall 44 of the groove portion 42 exists. When the slider 11 slides, the circular washers 30 and 31 eliminate foreign matter that has passed through the gap 46. That is, even if foreign matter collides with the small washer 30, the foreign matter is avoided along the side surface of the small washer 30 in the lower clearance 45a. Further, since the plurality of sliders 11 are in surface contact with the bottom surface of the groove portion 42, it is difficult for the foreign matter to be caught. Even if foreign matter is bitten, the foreign matter enters the recess 40 on the lower surface of the small washer 30 and does not interfere with the slide. As described above, the slider 11 pushes and slides the foreign matter, the resistance at the time of sliding is reduced, and the floor material 10 can be smoothly moved with respect to the housing 2.

  When displacement in the X direction occurs, the housings 2 and 3 on both sides approach or separate. Since the slider 11 on one side of the floor material 10 is restricted from moving in the X direction with respect to the slide fixing frame 12 fixed to one of the housings 2, one side of the floor material 10 follows the housing 2. Move. When the housings 2 and 3 on both sides approach, the other side of the floor material 10 moves toward the other side in the X direction. At this time, the floor material 10 moves on the frame 23 toward the other side in the X direction, and the movable material 14 slides while pivoting upward along the first inclined surface 72 of the base frame 15. When the displacement in the X direction is large, the tip end material 16 of the floor material 10 slides on the base frame 15 toward the other side in the X direction, and the other side of the floor material 10 rises along the second inclined surface 74. At this time, on one side of the floor material 10, the slider 11 is slightly inclined, and the side surface of the large washer 31 contacts the side wall 44 of the groove 42. That is, when the floor material 10 tilts upward, the inclination of the floor material 10 is allowed until the side surface of the large washer 31 contacts the slide fixing frame 12. Thus, the floor material 10 can follow the relative displacement of the two housings 2, 3 without being subjected to an impact.

  When the housings 2 and 3 on both sides are separated, the other side of the floor material 10 moves on the frame 23 toward one side in the X direction. At this time, the floor material 10 slides without tilting, but the movable material 14 slides while rotating downward along the second inclined surface 74 of the base frame 15. Therefore, the floor material 10 can follow the relative displacement of the housings 2 and 3 on both sides, and the load on the seismic isolation floor 1 can be reduced.

  The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be added to the above embodiment within the scope of the present invention. The slider 11 is not limited to the two-stage stacking of the washers, and the washers may be stacked in three or more stages. By adjusting the height of the slider 11 according to the number of washers, it is possible to adjust the height from the housing 2 to the floor material 10. Further, a groove parallel to the Y direction may be formed on the bottom surface of the groove 42. Since the contact area between the slider 11 and the groove 42 is reduced and fine foreign matter enters the groove, the contact between the washer and the foreign matter is reduced, the resistance is reduced, and the slider 11 slides smoothly.

DESCRIPTION OF SYMBOLS 1 seismically isolated floor 2 one frame 3 the other frame 4 clearance 10 floor material 11 slider 12 slide fixed frame 13 slide material 14 movable material 15 base frame 16 tip material 30 small washer 31 large washer 42 groove 44 side wall 45 clearance

Claims (3)

It is installed so as to cover the clearance provided in the seismic isolation structure, and one side in the clearance width direction is slidably supported by one frame in the clearance longitudinal direction, and the other side in the clearance width direction is movably mounted in the other box A floor isolation base, a floor covering a clearance, a plurality of sliders attached to one side of the floor, and a slide fixing frame fixed to one of the housings and slidably supporting the slider The slider is a washer attached to the floor material by a bolt, the washer is positioned with a gap from the side wall of the slide fixing frame, and the lower surface of the washer is in contact with the bottom surface of the slide fixing frame Seismic isolation floor that features. The base isolation floor according to claim 1, wherein the slider is configured by stacking washers of different sizes, and the lowermost washer contacting the bottom surface of the slide fixing frame has a smaller diameter than the upper washer. . A slide member for holding the slider is provided on one side of the floor member so as to face the slide fixing frame, and a mounting portion projecting toward the slide fixing frame is formed on the slide member, and a washer is mounted on the lower side of the mounting portion The mounting portion of the slide material is disposed in non-contact with the slide fixing frame so as to close the slide fixing frame, and the inclination of the floor material is allowed until the side surface of the washer contacts the slide fixing frame when the floor material is inclined. The seismic isolation floor according to claim 1 or 2, characterized in that:

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