JP3854365B2 - Escalator for base-isolated building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an escalator for a base-isolated building.
[0002]
[Prior art]
Conventional escalators generally have a structure in which the upper end is mounted on a beam on the upper floor, the lower end is mounted on a beam on the lower floor via a claw, and the claw portion is fixed with an anchor.
[0003]
[Problems to be solved by the present invention]
If an escalator with such a structure is installed in a base-isolated building with a base isolation device in the middle level, horizontal anchoring occurs between the upper and lower floors, which breaks the anchor that fixes the escalator. The danger of the escalator falling is expected.
[0004]
The present invention has been made to solve the above-described conventional problems. In a base-isolated building, even if a horizontal displacement occurs between an upper floor and a lower floor, there is a risk that the escalator may fall or break. The purpose is to provide an escalator for seismic isolation buildings.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, an escalator is installed between the seismic isolation floor and the upper floor in a building having a seismic isolation device on the intermediate floor, and the upper end of the escalator is fixed to the upper floor. In addition, the present invention provides an escalator for a base-isolated building in which a gap is provided between the lower end of the escalator and the seismic isolation floor, and the escalator is installed in a suspended state on an upper floor.
[0006]
In addition, in the above escalator for a base-isolated building, the escalator for a base-isolated building is characterized in that the escalator is surrounded by a frame and the upper part of the frame is fixed and suspended on an upper floor. provide.
[0007]
Furthermore, in the above escalator for a base-isolated building, a plurality of escalators arranged in parallel are integrally surrounded by a frame, and the upper part of the frame is fixed and suspended on an upper floor. Provide escalators for base-isolated buildings. Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
<I> Base-isolated building A building using the escalator of the present invention is a building provided with a base-isolation device C on the intermediate floor between the upper floor A and the lower floor B as shown in FIG. In such a building, since a horizontal displacement occurs between the upper floor A and the seismic isolation floor D as described above, an escalator having a conventional structure cannot be used as it is.
[0009]
<B> Structure of escalator In the present embodiment, two escalators 1 for upward and downward are arranged in parallel, and a structure in which they are integrally surrounded by a suspension frame 2 is shown. May be composed of one or three or more.
[0010]
Each escalator 1 is held by an escalator frame 11, and the suspended frame 2 is joined to the escalator frame 11. The suspension frame 2 is configured in a square shape by, for example, an upper beam member 21, a lower beam member 22, a vertical connecting member 23, and a horizontal connecting member 24.
[0011]
As shown in FIG. 2, three upper beam members 21 are arranged on both sides of the escalator 1 and in the middle thereof, and are joined to the upper end portion of the escalator frame 11 by a horizontal connecting member 24.
[0012]
Although not shown, three lower beam members 22 are also arranged at positions corresponding to the upper beam member 21, and are joined to the lower end portion of the escalator frame 11 by a lateral connecting member 24. The end portions of the upper beam member 21 and the lower beam member 22 are joined by a vertical connecting member 23 and integrated into a square shape.
[0013]
<C> Mounting structure at the top of the escalator The escalator 1 is installed between the seismic isolation floor D and its upper floor A. In this case, both ends of the upper beam member 21 of the suspension frame 2 are fixed to the side surface of the upper floor A by the anchor 3 or the like.
[0014]
<D> Mounting structure under the escalator The lower part of the suspension frame 2 secures gaps S1 and S2 corresponding to the maximum amount of shaking at the time of the earthquake between the bottom surface of the seismic isolation floor D and the frame. As a result, each escalator 1 integrated by the suspension frame 2 is suspended from the upper floor A.
[0015]
The gap S1 is covered with a sufficiently long transition board 4 to avoid the danger of the user.
[0016]
<E> Operation at the time of earthquake The upper part of the escalator 1 is fixed to the floor of the upper floor A, but the upper floor of the escalator 1 is small because the upper floor A is less swayed during the earthquake. On the other hand, the seismic isolation floor D sways during an earthquake, but the lower part of the escalator 1 is also disconnected from the seismic isolation floor D, so that the lower part of the escalator 1 is also less swayed. Therefore, the escalator 1 is not damaged even if a horizontal displacement occurs due to the seismic force.
[0017]
Further, although a plurality of escalators 1 for upward and downward use are arranged in parallel, since they are integrated by the suspension frame 2, there is no concern that the escalators 1 will come into contact with each other even if shaking occurs.
[0018]
[Effect of the present invention]
Since the escalator for a seismic isolation building according to the present invention is as described above, even if a horizontal displacement occurs between the seismic isolation floor and the upper floor during an earthquake, the escalator will not be damaged or fall, There is no worry of damaging it.
[Brief description of the drawings]
FIG. 1 is an explanatory view from the side of an embodiment of the present invention. FIG. 2 is an explanatory view from the plane. FIG. 3 is an explanatory view of a building with an isolation device interposed.

Claims (3)

In buildings with seismic isolation devices on the intermediate floor,
Install an escalator between the seismic isolation floor and the upper floor,
The upper end of the escalator is fixed to the upper floor,
There is a gap between the bottom of the escalator and the seismic isolation floor,
The escalator is installed in a suspended state on the upper floor,
Escalator for base-isolated buildings. The escalator for a base-isolated building according to claim 1, wherein the escalator is surrounded by a frame, and the upper portion of the frame is fixed and suspended on an upper floor and installed. Escalator for use. The escalator for a base-isolated building according to claim 1, wherein a plurality of escalators arranged in parallel are integrally surrounded by a frame, and the upper part of the frame is fixed and suspended on an upper floor. An escalator for base-isolated buildings.

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