JPH1122138A - Handrail structure of seismic isolation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a handrail following up the horizontal deformation, by providing the end rotatably connected around the perpendicular axis against the seismic isolation structure side or the external side and also providing the central part between the ends to be extensible in the extending direction of the passage. SOLUTION: A connecting corridor is laid between floor slabs 9 of a seismic isolation building 1. And a laid plate 12 constituting a passage way 10 and a passage plate 13 eliminating level differences of the passage way 10 are provided on the floor slabs 9. Both ends of the plate 12 are formed semicircular and provided with insertion holes 14. Projections 9a are inserted in the holes 14 to make the projections rotatable. When the seismic isolation building 1 is relatively displaced horizontally in an earthquake, the projections 9a and the insertion holes 14 are displaced in A-direction against the relative displacement of the A-direction and the connecting corridor follows the displacement of the A-direction. And further, handrail structures 16, 17 are formed at the side edges 10a of the passage way 10 and the ends 16a are connected to the building side handrails 18 through hinges 19 and the central part 16b between the ends 16a is made extensible. Hence, the breakage of the handrails can be prevented even at earthquakes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail structure of a base-isolated structure provided on both side edges of a passage provided between the base-isolated structures or between the base-isolated structure and the outside thereof. It is.

[0002]

2. Description of the Related Art As is well known, in recent years, many seismic isolation structures have been realized in which a seismic isolation effect is obtained by increasing the natural vibration period by interposing a laminated rubber on a base portion. In such a seismic isolation structure, a portion above the laminated rubber vibrates largely in the horizontal direction during an earthquake, so it is necessary to provide a clearance around the structure. Therefore,
A passage is provided for the clearance in order to connect the ground and other structures outside the structure to the structure. Also, when constructing multiple seismic isolation structures adjacent to each other, it is necessary to separate these structures using an expansion joint or the like in order to prevent these structures from colliding during an earthquake, Also in this case, a passage is provided between the structures to connect the structures.
In general, a handrail provided in a passage of such a seismic isolation structure is directly used as a handrail for preventing a person from falling down in a passage of an ordinary building or the like.

[0003]

The above-described passage of the base-isolated structure has a configuration capable of following a large deformation in the horizontal direction because the base-isolated structure itself vibrates largely in the horizontal direction during an earthquake. There is a need. Therefore, in order to prevent a person from falling during a large earthquake, it is considered that the handrail also needs to have the same deformation performance.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a handrail structure of a seismic isolation structure that can follow large horizontal deformation.

[0005]

In view of the above circumstances, the present invention employs the following means. That is, claim 1
The handrail structure of the seismic isolation structure described is between the seismic isolation structures.
Or a handrail structure of a seismic isolation structure provided on both side edges of a passage provided between the seismic isolation structure and the outside thereof, wherein the handrail structure is provided around a vertical axis with respect to the seismic isolation structure side or the outside thereof. It is characterized by comprising an end connected rotatably and displaceable, and a central portion provided between these ends and capable of extending and contracting in the extending direction of the passage.

[0006] Because of the above-described configuration, in the handrail structure of the seismic isolation structure, the seismic isolation structures or the seismic isolation structure and the outside thereof are relatively displaced in the direction in which the passage extends. In the case, the center part can expand and contract to follow the deformation, and when the seismic isolated structures or the seismic isolated structure and the outside thereof are relatively displaced in the direction orthogonal to the direction in which the passage extends. In this case, the center part can expand and contract, and the end part can follow the deformation by being pivotally displaced around the vertical axis with respect to the seismic isolation structure side or the outside thereof.

The handrail structure of the seismic isolation structure according to claim 2 is
2. The handrail structure of the seismic isolation structure according to claim 1, wherein a pair of upper and lower fixing members fixed to the end side and arranged in parallel with each other in the direction in which the passage extends is provided. 3. On the other hand, a pair of upper and lower moving members provided so as to be relatively displaceable in the extending direction of the passage is provided, and the fixed member and the moving member are integrated to constitute the central portion. .

In the handrail structure of this seismic isolation structure, the central portion can expand and contract in the same direction by the relative displacement of the fixed member and the moving member in the direction in which the passage extends.

The handrail structure of the base-isolated structure according to claim 3 is
2. The handrail structure of the seismic isolation structure according to claim 1, wherein the central portion is connected to each other so as to be rotatable about a horizontal axis orthogonal to an extending direction of the passage. 3. These plate-shaped members are arranged so as to form a zigzag shape when viewed from a horizontal direction orthogonal to the extending direction of the passage.

In the handrail structure of the seismic isolation structure, the plurality of zigzag-shaped plate members can follow the deformation in the same direction by expanding and contracting in the direction in which the passage extends as a whole. It is.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 8 is a diagram showing seismically isolated buildings (seismically isolated structures) 1, 1 constructed adjacent to each other. As shown in the drawing, the base-isolated building 1 is provided with laminated rubbers 4, 4,... On the base portion 3, whereby the upper structure 6 and the ground 7 are cut off. Is made longer. In addition, between these base-isolated buildings 1, 1, there is a corridor 8, which connects them.
8, ... are installed.

FIG. 9 is a diagram showing details of the structure of the crossing corridor 8. As shown in FIG. 9 (a), the crossing corridor 8 is erected between floor slabs 9, 9 of the seismic isolation buildings 1, 1, and an upper surface thereof constitutes a passage 10, and both ends of the erection plate 12. And a passage plate 13 for eliminating a step in the passage 10.

FIG. 9 (b) shows a situation where the crossing corridor 8 is viewed from above. As shown in FIG. 9 (a), both ends 12a of the erection plate 12 are approximately half in plan. The two end portions 12a, 12a are provided with insertion holes 14, 14 which are long in the direction in which the passage 10 extends (the direction A in the drawing). I have. Projecting portions 9a, 9a formed to project upward in the floor slabs 9, 9 are inserted through the insertion holes 14, and these projections 9a extend through the insertion holes 14 in the insertion holes 14. In the direction in which the insertion hole 14 moves.

Therefore, when the base-isolated buildings 1 and 1 are relatively displaced in the horizontal direction during the earthquake, the relative position between the projecting portion 9a and the insertion hole 14 is displaced in the A direction with respect to the relative displacement in the A direction. By doing so, it becomes possible for the passage corridor 8 to follow the deformation in the direction A, and for the relative displacement in the direction orthogonal to the direction A (direction B in the figure), the insertion hole 14 additionally By rotating and displacing with respect to 9a, it is possible to follow the deformation in the B direction.

Also, as shown in FIG.
Handrail structures 16 and 17 are provided on the side edges 10a and 10b. FIG. 9A shows a situation where the handrail structure 16 is viewed from the front. As shown in the figure, the handrail structure 16 is a building-side handrail 18 fixed to the base-isolated building 1.
In contrast, there are provided end portions 16a, 16a connected to the base-isolated buildings 1, 1 connected via hinges 19, 19, and a central portion 16b provided between these end portions 16a, 16a. It is configured. The building-side handrails 18 and the handrail structure 16 are formed by attaching panels 20, 20,... To the surface of a skeleton (not shown).

FIG. 1 shows a handrail structure 16 and a building-side handrail 1.
FIG. 8 is a diagram showing details of the structure of an eight skeleton 16c, 18c. As shown in the figure, the end 16a of the handrail structure 16
Is formed by a first vertical member 22 connected via hinges 19 to a building-side handrail 18 fixed to the base-isolated building 1. Also, hinges 19, 19
Is configured such that the first vertical member 22 is rotatable with respect to the building-side handrail 18 about the pins 23, 23 as rotation axes. Further, the end 2 of the first vertical member 22
A pair of upper and lower fixing members 24, 24 arranged horizontally are fixed to 2a, 22a, and a pair of upper and lower moving members 25, 25 are arranged along the ends 24a, 24a of these fixing members 24, 24. Have been. In addition, these fixing members 2
The central portion 16b of the handrail structure 16 is configured by integrating the members 4 and 24 and the moving members 25 and 25.

Further, as shown in the figure, the first vertical member 22, the fixing members 24, 24, and the end portion 2 of the fixing member.
Second vertical member 26 vertically disposed between 4a and 24a
And these first vertical member 22, fixed members 24, 24,
The first frame structure 29 is formed by the braces 28, 28 arranged so as to be located on the diagonal line of the square 27 formed by the second vertical member 26. On the other hand, the moving member 2
, 25, the third vertical members 31, 31,... Disposed vertically between the moving members 25, 25, and the quadrangle formed by the moving members 25, 25 and the third vertical members 31, 31,. A second frame structure 34 is formed by braces 33, 33, ... arranged so as to be located on diagonal lines of 32, 32, ....

FIG. 2 is a diagram showing a II section in FIG. As shown in FIG. 1, the fixing members 24, 24 are both formed of channel steels 36, 36, and are arranged such that the grooves 36 a, 36 a of the channel steel 36 face each other. The moving members 25, 25 are both formed by T-shaped steels 37, 37, and the T-shaped steels 37, 3
7, the flanges 37a, 37a are arranged inside the grooves 36a, 36a of the channel steels 36, 36.

Further, of the moving members 25, 25, the one located on the lower side transmits the load of the second frame structure 34 to the fixing member 24 with respect to the flange 37a, and moves with the fixing member 24. A sliding member 38 for reducing friction generated between the member 25 is disposed. The sliding member 38 is formed of a tetrafluoroethylene resin.

FIG. 3 is a view showing a section taken along the line II-II in FIG. As shown in the figure, the braces 28, 28 forming a part of the first frame structure 29 are spaced apart and parallel to the direction in which the passage 10 (see FIG. 9) extends (direction B in the figure). Are located in The second vertical member 26 is
The strips 41, which are arranged at the ends 28a, 28a of the braces 28 and are provided so as to face each other.
41 and the facing surfaces 41a of these steel strips 41, 41,
It is configured to have stopper portions 42, 42 protruding toward the 41a side. Further, the third vertical member 31 is formed of a T-shaped steel 43 and is disposed inside the braces 28, 28. Braces 33, 33 are joined to the edge 43 a of the web of the T-shaped steel 43, and the braces 33 are configured to be inserted between the stopper portions 42, 42.

The configuration of the handrail structure 16 has been described above with reference to FIGS. 1 to 3. Next, the configuration of the handrail structure 17 will be described. As shown in FIG.
Are hinges 46, 46,.
And the central portion 17b provided between the ends 17a, 17a.

The end portions 17a, 17a are end steel plates 47, 4
7, the central portion 17b has edge steel plates (plate-like members) 48, 48, which form upper and lower edges of the central portion 17b.
Vertical steel plates 49 vertically disposed at predetermined intervals,
49,...

FIG. 5 is a view showing the structure of the hinge 46. As shown in FIG. As shown in FIG. 5A, the hinge 46 is
0, a first tubular body 51, 51, and a second tubular body 52
Formed by As shown in (b), the first tubular body 51 has a substantially hexagonal cross section, and has an insertion hole 51a formed therein.
Further, it is welded to the end steel plate 47. The pin 50 is inserted through the insertion hole 51a. On the other hand, as shown in (c), the second tubular body 52 includes a tubular portion 52a and a protruding portion 52b welded to the tubular portion 52a, and a pin 50 is provided inside the tubular portion 52a.
Is inserted, and the protruding portion 52b is
(See (a)).

FIG. 6 is a perspective view showing details of the structure of the central portion 17b. As shown in the figure, the edge steel plates 48, 4
, And vertical steel plates 49, 49,.
, Are connected to each other. Edge steel plate 48,
, Via the hinges 54, 54, so as to form a pair of upper and lower zigzag shapes 55, 55 when viewed from the direction perpendicular to the extending direction of the passage 10 (see FIG. 9) (direction B in the figure). Are connected to each other, and the vertical steel plates 49, 49,.
Are the peaks 55a of these upper and lower zigzag shapes 55, 55,
Between the hinges 54a, 54a located at 55a and the valley 5
The hinges 54b, 54b located between 5b, 55b are vertically connected.

FIG. 7A is a diagram showing the hinge 54 from above. 7 (b), (c) and (d) correspond to FIG.
It is the figure which showed pp, qq, and rr cross section in (a), respectively. As shown in these figures, the edge steel plate 4
8 and the end portions 48a, 49a of the vertical steel plate 49, projections 48b, 49b are formed, and these projections 48b, 49b are bent to form insertion holes 48c, 49c through which the pin 56 can be inserted. It has been processed to. Further, the projections 48b, 49b and the pin 56
Are integrated to form the hinge 54.

The basic structure of the handrail structures 16 and 17 has been described above.
Will function as follows during an earthquake. That is, during an earthquake, the base-isolated buildings 1 and 1 vibrate in the horizontal direction. At this time, as described above, the base-isolated buildings 1 and 1 are relatively displaced in the direction in which the passage 10 extends. In this case, the passage corridor 8 follows the deformation by expanding and contracting as a whole in the extending direction, and furthermore, the passage 1
When the base-isolated buildings 1 and 1 are relatively displaced in the direction orthogonal to the direction in which 0 extends, in addition to this, both ends of the crossing corridor 8 are deformed by being rotationally displaced with respect to the base-isolated buildings 1 and 1. To follow.

At this time, in the handrail structure 16, the first frame structure 29 and the second frame structure 34 are relatively displaced in the direction in which the passage 10 extends (direction A: see FIG. 1). The central portion 16b expands and contracts, thereby following the deformation of the crossing corridor 8 in the expansion and contraction direction. When the crossing corridor 8 is displaced with respect to the base-isolated buildings 1, 1, it is provided between the ends 16a, 16a of the handrail structure 16 and the building-side handrails 18, 18 fixed to the base-isolated building 1. The hinge 19 provided follows the relative displacement between the crossing corridor 8 and the base-isolated buildings 1 and 1 by acting to allow these rotational displacements.

Further, in the handrail structure 17, the edge steel plates 48, 4 arranged to form the zigzag shape 55 are formed.
.. Expand and contract in the direction in which the passage 10 extends as a whole, so that it is possible to follow the deformation of the crossing corridor 8 in the direction of expansion and contraction. Further, when the crossing corridor 8 is rotationally displaced with respect to the base-isolated buildings 1 and 1, the end steel plates 47 forming the ends 17a and 17a of the handrail structure 17 use the hinges 46 and 46 as fulcrums. The handrail structure 17 follows the relative displacement between the crossing corridor 8 and the base-isolated building 1, 1.

As described above, the handrail structure 1 of the present embodiment
6 and 17 are end portions 16a, 16a and 17 which are rotatable around a vertical axis with respect to the base-isolated building 1, 1 side.
a, 17a and between these ends 16a, 16a and 17
a, 17a, and is provided with central portions 16b and 17b which are extendable and contractible in the direction in which the passage 10 extends. For this reason, when the base-isolated buildings 1 and 1 are displaced relative to each other in the direction in which the passage 10 extends during the earthquake, the central portions 16b and 17b can expand and contract to follow the deformation, and the base-isolation can be performed. When the buildings 1, 1 are relatively displaced in a direction perpendicular to the direction in which the passage 10 extends, the central portions 16b and 17b expand and contract, and the ends 16a and 17a are perpendicular to the base-isolated buildings 1, 1 side. By rotating and displacing about the axis, deformation can be followed.
Therefore, these handrail structures 16 and 17 are not damaged even in the event of an earthquake, and are applied to the passage corridor 8 between the base-isolated buildings 1, 1, so that the handrail structure 8 in the event of an earthquake can be obtained.
From falling down can be prevented.

In particular, in the handrail structure 16, the passage 10
And a pair of upper and lower fixing members 24, 24 arranged in parallel with each other in the direction in which the passage 10 extends, and a pair of upper and lower fixing members Since the moving members 25 and 25 are integrated to form the central portion 16b, the central portion 16b can favorably follow the expansion and contraction of the distance between the base-isolated buildings 1 and 1.

In the handrail structure 17, the hinge 5
4, the edge steel plates 48, which are rotatably connected to each other about a horizontal axis orthogonal to the direction in which the passage 10 extends, and are further arranged so as to form a zigzag shape 55.
48 constitute the central portion 17b, so that the central portion 17b can favorably follow the expansion and contraction of the distance between the base-isolated buildings 1 and 1.

In the above embodiment, the base-isolated buildings 1, 1 or the corridor 8, or the handrail structures 16, 17 are used.
Regarding details of the structure and the like of each part, other configurations may be adopted without departing from the gist of the present invention.

[0033]

As described above, the handrail structure of the seismic isolation structure according to claim 1 is provided at both side edges of the passage between the seismic isolation structures or between the seismic isolation structure and the outside thereof. And an end portion that is rotatable around a vertical axis with respect to the seismic isolation structure side or the outside thereof, and is provided between these ends and is extendable and contractible in the direction in which the passage extends. And a central portion. Therefore, in the event of a relative displacement between the base-isolated structures or the base-isolated structure and the outside during the earthquake in the direction in which the passage extends, the central portion can expand and contract to follow the deformation. If the base-isolated structures or the base-isolated structure and the outside of the base-isolated structure are displaced relative to each other in a direction perpendicular to the center, the central part expands and contracts, and the end part of the base-isolated structure or the outside. By rotating and displacing about the vertical axis, deformation can be followed. Therefore, this handrail structure is not damaged even during an earthquake, and can exhibit a function of preventing a person from falling down from the passage.

According to the handrail structure of the seismic isolation structure according to the second aspect, a pair of upper and lower fixing members arranged parallel to each other in the direction in which the passage extends, and the extension of the passage with respect to each of these fixing members. By forming a central part integrally with a pair of upper and lower moving members provided so that they can be relatively displaced in the existing direction, the distance between the seismic isolated structures or the , The central portion can follow, whereby the invention according to claim 1 can be favorably realized.

According to the handrail structure of the seismic isolation structure according to the third aspect, the handrail structure is rotatably connected to each other around a horizontal axis orthogonal to the direction in which the passage extends, and further viewed from the same direction. The central part is composed of a plurality of plate-like members arranged in a zigzag shape at the same time. It is possible to follow by expanding and contracting, so that the invention according to claim 1 can be favorably realized.

[Brief description of the drawings]

FIG. 1 is an enlarged front view of a handrail structure schematically showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II in FIG.

FIG. 3 is a sectional view taken along the line II-II in FIG.

FIG. 4 is a front view of a handrail structure showing another embodiment of the present invention.

5 is a view showing a hinge provided between an end of the handrail structure shown in FIG. 4 and a base-isolated building, wherein (a) is an overall view of the hinge, and (b) and (c). FIG.

6 is an external perspective view of a central portion of the handrail structure shown in FIG.

7A and 7B are views showing a hinge provided at the center of the handrail structure shown in FIG. 6, wherein FIG. 7A is a view showing the hinge from above, and FIG. (c) is a cross-sectional view taken along the line qq in (a).
(D) is a sectional view taken along line rr in (a).

FIG. 8 is a front view showing the appearance of a seismic isolated building (seismically isolated structure) to which the handrail structure of the present invention is applied and a crossing corridor installed between the seismic isolated buildings.

9 is an enlarged view of the crossing corridor shown in FIG. 8, wherein FIG. 9 (a) is a front view thereof, and FIG. 9 (b) is a plan view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seismic isolation building (seismic isolation structure) 10 Passage 10a Side edge 10b Side edge 16 Handrail structure 16a End 16b Central part 17 Handrail structure 17a End 17b Central part 24 Fixed member 25 Moving member 48 Edge steel plate (plate member) ) 55 Zigzag shape

Claims (3)

[Claims] 1. A handrail structure of a seismic isolation structure provided on both side edges of a passage provided between the seismic isolation structures or between the seismic isolation structure and the outside thereof, wherein the seismic isolation structure is provided. An end connected rotatably around a vertical axis with respect to the object side or the outside thereof, and a central portion provided between these ends and capable of extending and contracting in the extending direction of the passage. Handrail structure of seismic isolation structure provided. 2. The handrail structure of a seismic isolation structure according to claim 1, wherein a pair of upper and lower fixing members fixed to said end portion and arranged parallel to each other in a direction in which said passage extends. For each of the fixed members, a pair of upper and lower moving members provided so as to be relatively displaceable in the direction in which the passage extends is provided. A handrail structure of a base-isolated structure characterized by the following. 3. The handrail structure of a seismic isolation structure according to claim 1, wherein the central portions are connected to each other so as to be rotatable about a horizontal axis orthogonal to an extending direction of the passage. A seismic isolation structure comprising a plurality of plate-like members, wherein the plate-like members are arranged so as to form a zigzag shape when viewed from a horizontal direction orthogonal to the extending direction of the passage. Handrail structure for objects.