JP3780493B2 - Transitional floor to seismic isolation floor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a base isolation floor 30 supported by a base isolation device 31, a fixed support frame 15 or a fixed floor 20 that surrounds the base isolation floor 30, and a crossover plate 10 and a support structure thereof. It relates to the improvement of the traveling floor 1
[0002]
[Prior art]
As shown in FIGS. 8 and 9, the conventional transition floor 1 is a daily scaffold for crossing the base isolation floor 30 and the fixed support frame 15 or the fixed floor. The mission is to function as a movable lid to securely close the door. The seismic isolation devices include a two-dimensional (X, Y direction) seismic isolation device that supports only horizontal motion and a three-dimensional seismic isolation device that also supports vertical motion (Z direction). In any case, the upper surface of the transition floor 1 was horizontal, and its height coincided with the normal floor surface height of the seismic isolation floor 30. Further, the normal floor surface height of the seismic isolation floor 30 is substantially equal to a fixed floor (not shown) adjacent to the surrounding support frame 15 as shown by a solid line in FIG. There was a tendency to design and construct with the recognition that it would not be damaged. However, it was necessary to pursue a more safe, more economical and rational seismic isolation floor as an indoor device.
[0003]
This is because, as shown in FIGS. 8 and 9, when the seismic isolation floor 30 approaches the floor 1 in the horizontal direction as shown by the chain line A, even if the speed is constant or small, the transition board 10 The ascending slope increases at an accelerated rate, and the transition board 10 is easily reversed to the fixed floor side. Or even if it is not reversed, when the bridge plate returns, it collides with the seismic isolation floor and gives an impact.
[0004]
And if the transition board 10 exhibits an ascending slope, the seismic isolation floor 30 rises from the floor surface, which is extremely dangerous for those who hurry and evacuate. Further, if the crossover plate 10 is inverted and an opening is formed between the fixed floor and the base isolation floor 30, the danger to the person left behind on the swinging base isolation floor 30 need not be described.
Usually, about several tens of the transition floors 1 are attached around the base isolation floor, and there is concern about the influence on the base isolation floor.
In addition, hinges and insertion pins have been used to attach a conventional transit floor to a support frame in consideration of movement during an earthquake. However, in the case of using a hinge, the transition floor is spun up as described above by the base isolation floor, and the base isolation floor is impacted. And if it is flipped up excessively, it cannot be restored. Further, the structure using the insertion pin has the structure as shown in FIG. 9, and the phenomenon that the insertion pin 13 a bites into the hole of the support frame 15 occurs when the base isolation floor suddenly moves obliquely upward as indicated by the chain line A. . As a countermeasure for this phenomenon, a method of enlarging the hole of the support frame 15 or processing the hole into a tapered shape has been adopted, but the biting phenomenon could not be completely eliminated.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and intends to provide a safer, economical and rational transitional floor to a base-isolated floor.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 for solving the above-mentioned problem is a seismic isolation floor supported by a base isolation device such as a concrete floor of a building,
A fixed support frame 15 or a fixed floor 20 laid on the same base and surrounding the outside of the base isolation floor 30;
In what comprises the transition floor 1 that bridges the seismic isolation floor 30 and the support frame 15 or the fixed floor 20 so as to be relatively movable,
The seismic isolation floor side of the transition floor 1 is inclined downward, and the upper end height of the transition floor 1 is located above the upper limit of the vertical movement design value of the seismic isolation floor 30,
The transition floor 1 is locked to the support frame 15 or the fixed floor 20 on the upper end side thereof by the locking means 13 that is rotatable in the vertical direction, and is slidable on the seismic isolation floor 30 on the lower end side. It is a transitional floor to a base-isolated floor characterized by being placed.
According to the above invention, the floor surface of the fixed support frame 15 or the fixed floor 20 is positioned above the upper limit of the design value of the vertical motion of the seismic isolation floor 30, and one end of the bridge plate 10 is the support frame 15 or the fixed floor. Since it is locked by the floor 20 and the other end is placed on the seismic isolation floor 30 and slides, there is no risk of the crossover plate 10 being inverted, and it is safer and more economical and easy for daily maintenance management. A transition floor 1 to the floor 30 can be provided.
[0007]
The invention according to claim 2 is the seismic isolation floor 30 supported by the base isolation device 31 at the base of the concrete floor 40 of the building,
A fixed support frame 15 or a fixed floor 20 laid on the same base and surrounding the outside of the base isolation floor 30;
In what comprises the transition floor 1 that bridges the seismic isolation floor 30 and the fixed support frame 15 or the fixed floor 20 so as to be relatively movable,
The transition floor 1 is inclined downward toward the support frame 15 side or the fixed floor 20 side, and the lower end height of the transition floor 1 is located below the lower limit of the vertical movement design value of the seismic isolation floor 30,
The transit floor 1 is locked to the seismic isolation floor 30 on the upper end side thereof by a locking means 13 that is rotatable in the vertical direction, and slides on the fixed support frame 15 or the fixed floor 20 on the lower end side. It is a transitional floor to a seismic isolation floor characterized by being placed freely.
According to the above invention, the floor surface of the fixed support frame 15 or the fixed floor 20 is positioned below the lower limit of the design value of the vertical motion of the seismic isolation floor 30, and one end of the transition board 10 is on the seismic isolation floor 30 side. Since the other end is placed on the support frame 15 or the fixed floor 20 and slides, there is no possibility that the crossover plate 10 is reversed, and it is safer and more economical and easy for daily maintenance management. The transition floor 1 to the seismic floor 30 can be provided.
[0008]
The invention according to claim 3 is the invention according to claim 1 or 2,
A locking pin 13A, which is provided at the end of the back surface of the transition floor 1, has a locking means 13 that can rotate the transition floor 1.
A pin hole 13B into which the locking pin 13A is loosely inserted at a locking position on the support frame 15 or the fixed floor 20, or the seismic isolation floor 30 side,
The locking pin 13A has a small-diameter truncated cone portion 13y located at the upper end portion, and the small-diameter cylindrical portion 13x extends to the lower end of the truncated cone portion 13y.
The pin hole 13B is a transit floor to the base-isolated floor, which is formed by a vertical round hole fitted to the maximum outer diameter of the truncated cone part 13y.
According to the above invention, the pivotable locking means 13 of the bridge plate 10 is constituted by the locking pin 13A and the pin hole 13B having a simple structure, so that safe and economical daily maintenance management is also possible. The easy transition floor 1 to the base isolation floor 30 can be provided.
That is, when the seismic isolation floor 30 moves up and down, the locking pin 13A smoothly rotates in the pin hole 13B, and a highly reliable transition floor can be provided.
[0009]
The invention according to claim 4 is the invention according to claim 3,
The locking pin 13A is a transition floor to the base isolation floor having the same axis as the truncated cone portion 13y and provided with a mounting screw 13z on the trapezoidal side.
According to the present invention, it is easy to attach the locking pin 13A.
[0010]
Invention of Claim 5 in any one of Claim 1-4,
This is a transition floor to a base-isolated floor characterized in that a cushioning / sliding material 12 is provided at the back side sliding portion of the transition floor 1.
According to the present invention, the transition floor 10 is provided with the cushioning / sliding material 12 on the back surface, absorbs the impact sound caused by walking during normal times, and quietly slides on the floor surface during an earthquake, so it is safe and economical. The transition floor 1 to the seismically isolated floor 30 can be provided.
The invention according to claim 6 is the invention according to claim 3 or claim 4 ,
The upper end portion of the crossing floor 1 is formed by bending a metal plate into a U-shaped cross section, and the locking pin 13A protrudes from the U-shaped lower surface side, and the U-shaped upper end surface extends to the cross section. It is a transitional floor to a seismic isolation floor that is bent in a letter shape and whose tip edge is bent in a slightly reverse letter shape.
According to this invention, the transition floor 1 can be comprised lightweight.
[0011]
The invention according to claim 7 is the invention according to claim 6,
The transition floor 1 is divided at a plurality of appropriate positions along the side of the seismic isolation floor 30, and the divided bodies are arranged adjacent to each other so that a large gap is not formed at the joint, and the width direction of each divided body This is a transition floor to a seismic isolation floor, characterized in that reinforcing ribs 11 bent 90 ° with the back side inward are provided on both sides.
According to the above invention, in the sixth aspect of the present invention, the ribs 11 are obtained by bending each of the divided members divided along the side of the base isolation floor 30 by 90 ° on both sides in the width direction with the back surface inward. Therefore, it is possible to provide the transition floor 1 to the seismic isolation floor 30 that can be manufactured at a light weight and at a low cost, is economical, and is easy for daily maintenance.
The invention according to claim 8 is the invention according to claim 1 or 2,
A fixed floor surrounding the seismic isolation floor 30 includes a stepped floor 21 having a step 22 higher than the other fixed floors 20.
According to the above invention, the fixed floor surrounding the seismic isolation floor 30 includes the stepped floor 21 raised from the other fixed floors 20 by the step 22, and the transition floor to the safe and rational seismic isolation floor 30 is provided. 1 can be provided.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment of a transition floor 1 (hereinafter referred to as the main transition floor 1) to the seismic isolation floor 30 according to the present invention, and is an explanatory diagram for showing the main part thereof. 2 is a perspective view of the locking pin 13A, FIG. 3 is an explanatory view of the operation of the main transfer floor 1, and FIG. 4 is an overall perspective view of the seismic isolation floor and the main transfer floor.
Moreover, FIG. 5 of this invention shows another Example of the main transfer floor 1 to the seismic isolation floor 30 of this invention, and is a whole sectional drawing for showing the whole structure. FIG. 6 is a schematic explanatory diagram showing a case where the fixed floor 20 is at a height equal to or higher than the upper limit of the vertical movement of the seismic isolation floor 30 for the main transfer floor 1 shown in FIG. FIG. 7 is a schematic explanatory diagram showing a case where the fixed floor 20 is located below the lower limit of the vertical motion of the base isolation floor 30, showing another embodiment different from the main transfer floor 1.
[0013]
Next, the structure of the main floor 1 will be described with reference to the drawings.
The seismic isolation device 31 includes a two-dimensional device that performs horizontal seismic isolation and a three-dimensional device that performs horizontal and vertical seismic isolation. Hereinafter, when it is particularly necessary to distinguish, it may be referred to as a three-dimensional seismic isolation device 32.
In FIG. 1 to FIG. 5, one of the main parts of the transition floor 1 is a transition board 10. The transition board 10 has a length of at least 2a (FIG. 5) in the transition direction, where a is the horizontal amplitude of the seismic isolation floor 30, and usually several tens of transition boards 10 are the sides of the seismic isolation floor 30. 4 are laid in parallel without interruption as shown in FIG.
In the example of FIG. 1, the connecting plate 10 is formed of a thin metal plate or the like, and a U-shaped section 2 is formed at the upper end portion thereof. A character-like portion 3 to the cross section is formed at the upper part of the upper surface of the transition plate, and a character-like portion 4 to the reverse of the cross section is formed at the lower end portion. Further, ribs 11 are provided on both sides of the crossing plate 10 in the width direction, and a buffer / sliding material 12 such as a Teflon plate is attached to a sliding portion with the seismic isolation floor 30. A locking pin 13A protrudes from the back surface of the U-shaped portion 2 of the transition plate 10 and constitutes a rotatable locking means 13 together with a pin hole 13B on the support frame 15 installed on the fixed floor 20 side. .
[0014]
That is, the transition board 10 is locked by the locking means 13 and supported by the floor surface of the seismic isolation floor 30 and slides while following the swing. As shown in FIG. 2, the locking pin 13A has a cylindrical portion 13x, a truncated cone portion 13y, and a mounting screw 13z.
And the transition floor is comprised by the aggregate | assembly of many such transition boards 10, the seismic isolation floor side of the transition floor 1 is inclined forward, and the upper end part height of the transition floor 1 is the vertical motion of the seismic isolation floor 30. It is located above the upper limit of the design value. The transition floor 1 is locked to the support frame 15 or the fixed floor 20 on the upper end side thereof by the locking means 13 that is rotatable in the vertical direction, and is slidable on the seismic isolation floor 30 on the lower end side. It is mounted on.
As a result, even if the seismic isolation floor moves to the support frame 15 side and moves to the uppermost position, the transition floor 1 is located at the chain line A in FIG. 3 and is not flipped up. At that time, the locking pin 13A rotates smoothly and does not bite with the pin hole 13B.
[0015]
Next, the crossover plate 10 in the example of FIG. 5 is a flat plate having two bent portions, and the upper end of the support frame 15 whose one end is locked by the locking means 13 is 22 steps from the fixed floor 20. Has been enhanced.
Next, in the example of FIG. 6, the height of the upper surface of the fixed floor 20 and the upper surface of the support frame 15 are the same.
Further, in the embodiment shown in FIG. 7, the bridge plate 10 is locked by the locking means 13 provided on the seismic isolation floor 30 side and supported by the floor surface of the stepped floor 21. That is, the transition floor 1 is constituted by an aggregate of the transition boards 10, and the transition floor 1 is inclined downward toward the fixed support frame 15 side or the fixed floor 20 side. It is located below the lower limit of the design value of the vertical motion of the seismic floor 30. The transition floor 1 is locked to the seismic isolation floor 30 on the upper end side thereof by the locking means 13 that is rotatable in the vertical direction, and slides on the support frame 15 or the fixed floor 20 on the lower end side. It is placed freely. The example of FIGS. 1 to 6 and the example of FIG. 7 have the same principle for preventing the falling floor from falling.
[0016]
Hereinafter, the operation of the main floor 1 will be described with reference to the drawings.
In FIG. 1 and FIG. 5, when the transition board 10 is locked to the support frame 15 by the pivotable locking means 13, the height of the upper end surface of the transition board 10 surrounding the base isolation floor 30 is the seismic isolation floor 30. The effect of being above the upper limit of the vertical movement will be described.
The transition board 10 originally has a role of bridging the fixed floor 20 and the seismic isolation floor 30. In the event of an earthquake, follow the seismic isolation floor 30 that exhibits a seismic isolation effect by three-dimensional movement, and reliably close the gap between the fixed floor 20 and the seismic isolation floor 30, The mission is to prevent accidents.
Therefore, the transition board 10 needs to be pivotably locked to at least one of the fixed floor 20 and the seismic isolation floor 30. However, if the height of the fixed floor 20 is higher than the upper limit of the movable range in the vertical direction of the seismic isolation floor 30 when locked to the fixed floor 20 side, the transition board 10 is moved from the fixed floor 20 to the base isolation floor 30. It always keeps a downward slope. The transition board 10 is always supported by the floor surface of the seismic isolation floor 30 at the lower end of the downward slope. That is, even if the base isolation floor 30 rises at a high speed, the possibility that the transition board 10 is jumped up to the base isolation floor 30 and reversed to the fixed floor 20 side is strongly excluded.
[0017]
Next, as shown in FIG. 7, when the bridge plate 10 is locked to the seismic isolation floor 30 by the pivotable locking means 13, the height of the fixed floor 20 surrounding the base isolation floor 30 is the seismic isolation floor 30. The effect of being below the lower limit of the vertical movement will be described.
In this case, the transition board 10 is always kept in a downward slope from the seismic isolation floor 30 toward the fixed floor 20, and is slid and supported by the floor surface of the fixed floor 20 at the lower end of the downward slope. Even if the seismic isolation floor 30 descends at a high speed and reaches the lower limit position, the transition board 10 does not rise, and the possibility of reversing to the seismic isolation floor 30 side is completely eliminated.
[0018]
Next, the rib 11 structure of the transition plate 10 and the cushioning / sliding material 12 will be described.
If the seismic isolation floor 30 including its seismic isolation device 31 reduces its own mass, it can increase the mass of the mounted equipment by that amount and exhibit the same function. In this case, since the transition board 10 performs a rotational motion, it is not completely equivalent to the mass of the mounted equipment. However, if the mass of the transition board 10 and the frictional resistance with the floor surface are reduced, substantially the same effect can be obtained.
However, the crossover plate 10 forms a support beam at both ends in the crossing direction from the center of the swing at least twice as long as the swing width a, for example 600 mm, and forms the dynamic weight of the pedestrian, that is, the concentrated load, as the floor. It is necessary to support this without a sense of incongruity. The length in the width direction of the both-end support beams corresponds to the circumferential length of the four sides of the base isolation floor 30. Therefore, the transition board 10 generally occupies a considerable ratio as compared with the weight of the electronic device or the like mounted on the seismic isolation floor 30, and in general, the weight reduction is a necessary requirement.
[0019]
The crossover board 10 is required to have a resistance to a concentrated load by a pedestrian in terms of function. In terms of manufacturing, ease of manufacturing is also important, and in terms of maintenance, handling must be considered. In this sense, the length in the crossing direction can be set as an integral structure for each side of the seismic isolation floor 30, where α is the placement cost of the seismic isolation floors 1 and 20 on which the transition floor is placed, respectively. 2 (a + α) is basically constant, and only the length in the side direction of the seismic isolation floor 30 changes for each object. Therefore, the method of laying the same divided pieces in parallel without interruption is both in production and maintenance. convenient. The structure provided with the rib 11 by bending with a thin plate structure is an excellent choice that satisfies these various conditions as well as weight reduction.
Further, the cushioning / sliding material 12 made of Teflon or the like absorbs the impact sound at the foot of a pedestrian on a daily basis, and has an effect of maintaining smooth sliding between the transition board 10 and the floor surface when a large earthquake occurs.
[0020]
Next, the locking means 13 of the transition board 10 by the locking pin 13A and the pin hole 13B will be described.
The locking pin 13A is vertically attached to the back surface of the crossover plate 10, and the axis at the time of assembly is in the vertical plane. The rotation angle is equal to the rotation angle θ of the bridge plate 10 corresponding to the upper and lower movable ranges of the base isolation floor 30. Therefore, the locking pin 13A is inserted into the pin hole 13B at the locking location, the horizontal position is constrained by the vertical cylindrical hole, and the locking pin 13A can be rotated without causing interference with the truncated cone part 13y.
Further, the crossover plate 10 is always supported at both ends in the crossover direction, and the center of gravity is not pushed up directly. Therefore, the possibility that the locking pin 13A side falls off is extremely low. Nevertheless, a cylindrical portion 13x is provided at the tip of the pin, which eliminates the possibility of falling off, while facilitating disassembly and assembly of the transition plate 10 for normal maintenance. Thus, the rotatable locking means 13 is realized with a simple structure.
[0021]
Next, as shown in FIGS. 5 and 7, the operation of the fixed floor 20 surrounding the base isolation floor 30 being a stepped floor 21 raised by a step 22 from the other fixed floors 20 will be described. . Earthquakes do not often occur. Even if they occur, the seismic isolation device 31 does not operate if it is small. In addition, in order to maintain the aesthetics of the room, an inconspicuous identical floor level may be expected for the seismic isolation floor 30. In the event of an earthquake, this seismic isolation area is a safer place than other places. Therefore, the step 22 can clearly distinguish the seismic isolation area from the others.
[0022]
The stepped floor 21 is not only a means for unconsciously distinguishing it from others, but also has a physical meaning. Generally, the seismic isolation floor 30 requires an installation space for the seismic isolation device 31 under the floor. Furthermore, in the seismic isolation floor 30 provided with the three-dimensional seismic isolation device 32 that also copes with vertical movement, it is necessary to move only the maximum allowable amplitude h from the normal floor surface level in the vertical direction.
For this reason, it goes without saying that the height of the seismic isolation device 31 is kept low so as not to clog the floor height to the ceiling. However, it is inevitable that the floor surface of the seismic isolation floor 30 tends to be higher than the normal fixed floor 20 that does not require any special equipment under the floor.
However, when the fixed floor 20 surrounding the base isolation floor 30 is higher than the upper limit position of the base isolation floor 30, the indoor ceiling height is likely to be relatively low. By providing the step 22 as necessary and using the stepped floor 21, the ceiling height in the room other than the vicinity of the seismic isolation floor 30 can be increased, which is reasonable.
[0023]
There is a similar problem when the fixed floor 20 surrounding the base isolation floor 30 is lower than the lower limit position of the base isolation floor 30. If necessary, there is an effect of expanding the indoor space in the same way, but in this case, there is another unique action.
[0024]
When the fixed floor 20 surrounding the base isolation floor 30 is lower than the lower limit position of the base isolation floor 30 and the transition board 10 is locked to the base isolation floor 30 side, the stepped floor 21 is attached as described above. Is desired for safety. In this case, the mass can be greatly reduced without changing the effective area of the seismic isolation floor 30 as compared with the case where it is higher than the upper limit position and locked to the fixed floor 20 side.
Assuming that the horizontal amplitude of the seismic isolation device 31 is a, the effective length of the transition floor 1 in the transition direction is 3a + 2α (the mounting margins at both ends in the width direction of the transition floor are α). If details are omitted, when the inside of the locking position of the crossover plate 10 is set as the effective range of the seismic isolation floor 30, the fixed floor 20 is at the end with a space a distance a from the boundary. The end of the normal position of the crossover plate 10 is located at a distance a from the end of the fixed floor 20, and the effective range of the fixed floor 20 begins beyond the amplitude range of the distance a. That is, the fixed floor 20 has a sliding support range with a width 2a. If the locking position of the crossover plate 10 is set to the fixed floor 20 side, the seismic isolation floor 30 needs to have a sliding support range having a width of 2a for each side.
That is, if the locking position of the crossover plate 10 is on the seismic isolation floor 30 side, the length of the beam of the seismic isolation floor 30 can be shortened by 4a in both the X and Y directions. The total mass of the seismic isolation floor 30 including the seismic isolation device 31 can be significantly reduced.
[0025]
【The invention's effect】
As described above, according to the transition floor to the seismic isolation floor according to claim 1 and claim 2, even in the event of a large earthquake, the fixed floor 20 and the seismic isolation due to the rising of the transition board 10 or the inversion to the fixed floor 20 side. The transition floor 1 to the safe seismic isolation floor 30 can be implemented without creating an opening with the floor 30.
According to the third aspect of the present invention, since the pivotable locking means 13 of the crossover plate 10 is constituted by the locking pin 13A and the pin hole 13B having a simple structure, it is safe and economical and is used daily. It is possible to provide the transition floor 1 to the seismic isolation floor 30 that is easy to maintain.
That is, the locking pin 13A smoothly rotates in the pin hole 13B when the seismic isolation floor 30 moves up and down, and the transition floor 1 with high reliability can be provided.
According to the fourth aspect of the present invention, it is easy to attach the locking pin 13A.
According to the fifth aspect of the present invention, the transition board 10 is provided with the cushioning / sliding material 12 on the back surface, and in normal times it absorbs the impact sound caused by walking and is quiet, and in the event of an earthquake, it smoothly slides on the floor surface. The transition floor 1 to the safe and economical base isolation floor 30 can be provided.
[0026]
According to the invention described in claim 6, the transit floor 1 can be configured to be lightweight.
According to the invention described in claim 7, in the crossing plate 10 according to claim 6, each of the divided bodies divided along the sides of the base isolation floor 30 is 90 ° on both sides in the width direction with the back surface inward. Since the bent rib 11 is provided, it is possible to provide the transition floor 1 to the seismic isolation floor 30 that can be manufactured at a light weight and at a low cost, and that is economical and easy for daily maintenance management.
According to the invention described in claim 8, even if the fixed floor surrounding the seismic isolation floor 30 includes the stepped floor 21 that is raised by the step 22 from the other fixed floors 20, it is safe and reasonable. The transition floor 1 to the seismically isolated floor 30 can be provided. And the fixed floor | bed and a base isolation floor can be distinguished by the level | step difference 22, and a safe base isolation floor can always be made aware at the time of an earthquake.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a main part of an embodiment of a transition floor to a seismic isolation floor according to the present invention.
FIG. 2 is a perspective view of a locking pin 13A used in the embodiment.
FIG. 3 is an operation explanatory diagram of the embodiment.
FIG. 4 is an overall perspective view of a base-isolated floor having a transition floor according to the embodiment.
FIG. 5 is an overall cross-sectional view showing the main part of another embodiment of the transition floor to the seismic isolation floor of the present invention.
6 is a schematic explanatory diagram of the transition floor 1 shown in FIG. 5 when the fixed floor 20 is set to a height equal to or higher than the upper limit of the vertical movement of the seismic isolation floor 30. FIG.
FIG. 7 shows still another embodiment of the transition floor to the seismic isolation floor of the present invention, and is a schematic explanation when the fixed floor 20 is set to a height equal to or lower than the lower limit of the vertical motion of the seismic isolation floor 30. Figure.
FIG. 8 is an explanatory diagram of a conventional type transition floor.
FIG. 9 is an explanatory view of an expansion operation of the same floor.
[Explanation of symbols]
1 Transition floor (Main transition floor)
2 U-shaped portion 3 Character-shaped portion 4 Reverse-shaped portion 10 Crossing plate 11 Rib 12 Buffer / sliding material 13 Locking means 13A Locking pin 13a Insertion pin 13B Pin hole 13x Cylindrical portion 13y Frustum portion 13z Mounting Screw 15 Support frame 20 Fixed floor 21 Stepped floor 22 Step 30 Seismic isolation floor 31 Seismic isolation device 32 3D seismic isolation device 40 Concrete floor

Claims (8)

A seismic isolation floor supported by a seismic isolation device at the base of the building concrete floor,
A fixed support frame or fixed floor laid on the same base and surrounding the base-isolated floor;
In what comprises a transition floor that bridges the seismic isolation floor and a support frame or a fixed floor in a relatively movable manner,
The seismic isolation floor side of the transition floor is inclined downwards, and the upper end height of the transition floor is located above the upper limit of the design value of the vertical motion of the seismic isolation floor,
The transition floor was locked on the support frame or fixed floor by the upper and lower side locking means that can be rotated in the vertical direction, and slidably mounted on the seismic isolation floor on the lower end side. A transitional floor to a seismic isolation floor. A seismic isolation floor supported by a seismic isolation device at the base of the building concrete floor,
A fixed support frame or fixed floor laid on the same base and surrounding the base-isolated floor;
In what comprises a transition floor that bridges the seismic isolation floor and a support frame or a fixed floor in a relatively movable manner,
The transition floor is inclined downward toward the fixed support frame side or fixed floor side, and the lower end height of the transition floor is located below the lower limit of the design value of the vertical motion of the base isolation floor,
The transit floor is locked to the seismic isolation floor on the upper end side thereof by a locking means that is rotatable in the vertical direction, and is slidably mounted on the support frame or the fixed floor on the lower end side. A transitional floor to a seismic isolation floor. In claim 1 or claim 2,
A locking pin that is pivotable on the transition floor, and a locking pin that projects from the end of the back surface of the transition floor,
A support frame or a fixed floor, or a pin hole into which the locking pin is loosely inserted at a locking position on the seismic isolation floor side,
The locking pin has a small-diameter truncated cone portion located at the upper end portion downward, and the small-diameter cylindrical portion extends to the lower end of the truncated cone portion,
The said pin hole is formed in the vertical round hole fitted with the largest outer diameter of a truncated cone part, The transition floor to the seismic isolation floor characterized by the above-mentioned. In Claim 3, The transition floor to the seismic isolation floor which is the same axial center as the said truncated-cone part, and was provided with the attachment screw in the trapezoid side. In any one of Claims 1-4,
A transition floor to a seismic isolation floor, characterized in that a buffer / sliding material is provided on the back side sliding part of the transition floor. In claim 3 or claim 4 ,
The upper end of the transition floor is made of a metal plate bent into a U-shaped cross section, and the locking pin protrudes on the lower side of the U-shaped, and the U-shaped upper end surface is shaped like a cross section. A transitional floor to a base-isolated floor that is bent in the shape of a bend and the tip edge of the bevel is bent in a slightly reverse shape. In claim 6,
The transition floor is divided at a plurality of appropriate positions along the side of the seismic isolation floor, and the divided bodies are arranged adjacent to each other so that a large gap is not formed at the joint, and in the width direction of each divided body A transitional floor to a base-isolated floor, characterized by having reinforcing ribs bent at 90 ° with the back side inward on both sides. In claim 1 or claim 2,
A transitional floor to a seismic isolation floor, characterized in that the fixed floor surrounding the base isolation floor is provided with a stepped floor raised by a step from the other fixed floors.

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