JPH012987A - Elevator structure of seismic isolation building - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an elevator structure for a seismically isolated building, in particular for a seismically isolated building with a basement floor.

(Prior technology) There are currently only a few seismically isolated buildings in which the load of the building is supported by seismic isolation devices, and conventional examples are limited. Seismic isolation device (
When installing laminated rubber bearings, etc., it became necessary to secure a space that would also serve as a dry area and allow for the displacement amplitude for seismic isolation, earth retaining of the surrounding ground, and retaining walls to prevent groundwater from flowing in.

On the other hand, since very large stresses and displacements do not occur in the underground part of the building, it is questionable whether there is a need to seismically isolate the underground floor structure of the building, and it is questionable whether it is necessary to provide seismic isolation to the underground floor structure of the building. There are enough buildings.

Based on this idea, in order to eliminate the need for the retaining wall, the ground floor structure of the building and the basement floor structure of the building are separated, and a building may be created in which only the ground floor structure is seismically isolated.

In a building with a separate structure where the ground floor and basement floor are partially separated,
During earthquake input, a displacement difference occurs between the ground floor and underground floor.

This displacement difference is determined by the displacement of the seismic isolation device in the living room, and is approximately 30 cmPi2fU in the horizontal direction.

Therefore, elevators must be installed separately for underground floors and for ground floors. For this reason, when attempting to move from the basement floor to the ground floor, an elevator transfer is required.

(Problems to be Solved by the Invention) The present invention has been made in view of the above-mentioned points, and its purpose is to provide a seismic isolation building that has an upper structure and a lower structure separated. An object of the present invention is to provide an elevator structure with a seismic isolation door that can communicate vertically in a straight line between a lower structure and a lower structure.

(Means for Solving the Problems) In order to achieve the above object, the elevator structure for a seismically isolated building according to the present invention consists of separating the building into an upper structure and a lower structure, and In the elevator structure of a seismically isolated building, in which the upper structure is seismically isolated by interposing a seismic isolation device between the upper structure and the lower structure, the upper structure and the lower structure of the seismically isolated building are connected continuously. A dedicated hoistway connected to the It consists of a cage that moves vertically in a dedicated hoistway along rails.

(Function) The hoist, cage rail, and cage swing together with the upper structure in the same direction. Therefore, an elevator 19 is provided to communicate between the upper structure and the lower structure, since no horizontal displacement difference occurs in the middle of the vertical movement of the car.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

A seismic isolation building 2 equipped with an elevator 1 according to the present invention has a laminated rubber support 5 interposed between a ground floor structure 3 and an underground floor structure 4.

The top surface of the underground floor structure 4 is at approximately the same level as the ground level, and a laminated rubber bearing 5 is placed at the top of the underground floor structure 4, and the laminated rubber bearing 5 absorbs the load of the ground floor structure 3. is borne by the government.

No dry area is provided around the basement structure 4, and the basement wall 6 of the basement structure 4 has a structure that can sufficiently withstand earth pressure.

Therefore, in the event of an earthquake, the underground wall 6 of the underground floor structure 4 will be exposed to the surrounding ground! 20, and the underground floor structure 4 and the ground 20 move together. Therefore,
Even if the underground floor structure 4 is not made into a base isolation structure, there is no risk that it will be destroyed due to earthquake input. When installing equipment that requires seismic isolation on a basement floor, it is sufficient to provide seismic isolation at the floor level where it is installed.

The same effect can be obtained even if the laminated rubber bearing 5 supporting the ground floor structure 3 is replaced with a seismic isolation device or the like which is a combination of a bag-shaped air spring filled with air and a steel rod bent into a loop shape.

The ground-L floor structure 3 is placed on the laminated rubber support 5, and is seismically isolated on the basement floor structure 4 that grips the ground 20 integrally, and there is no space between the basement floor structure 4 and the basement floor structure 4 during an earthquake. Needless to say, horizontal displacement differences also occur during strong winds.

On the other hand, the elevator shaft 8 is constructed of reinforced concrete or the like integrally with the ground floor structure 3 on the ground floor, and is separated from the basement structure 4 on the basement floor and is suspended vertically from the ground floor structure 3. ing.

A car rail (guide rail) 9 is installed along the vertical direction of the inner wall of the elevator shaft 8 . A balance weight rail 11 for the balance weight 10 is arranged in parallel with one of the cage rails. The cage 12 is suspended from the tip of a rope 14 wound around a hoist 13 in the vent house 7, and moves up and down inside the elevator shaft 8 while being guided by the cage rails 9).

Further, in the portion where the elevator shaft 8 passes through the basement floor structure 4, a holding structure 16 is provided in contact with each M floor slab 15 of the basement floor 13fi 4 for the purpose of absorbing the shaking of the basement floor structure 4 during an earthquake. . The details are shown in Figure 2.

That is, the floor slab 1 is placed outside the elevator shaft 8.
A retaining plate 17 is attached to sandwich the ends of 5 from above and below. The outer surface of the elevator shaft 8 and the end surface of the floor slab 15 are separated by more than the interlayer displacement of the laminated rubber bearing 5, and a coil spring 18 or the like is installed in this gap as necessary, and a fire retention mechanism is installed. For fire prevention reasons, a padding 19 of rock wool, glass wool, etc. is inserted into the floor 16 to prevent people from entering other floors.

The hanging portion of the elevator shaft 8 is held by the ffM structure 16
This allows for free movement in the horizontal direction from the floor slab 15 and also provides support.

In the above embodiment, since the elevator shaft 8 itself is integrated with the ground floor structure 3, the displacement difference between the ground floor +i structure 3 and the underground floor structure 4 does not pose a problem.

FIG. 3 shows another embodiment. In this embodiment, the holding mechanism 16
Even without this, no special measures are required for the strength of the elevator shaft or the rigidity of its suspension structure. That is, the elevator shaft 8a has a cylindrical shape that is vertically formed in the ground floor structure 3 and the underground floor structure 4, respectively.
It consists of an upper elevator shaft 21 that is integral with the ground floor structure 3 and a lower elevator shaft 22 that is integral with the underground floor structure 4. The elevator shaft 21 and the elevator shaft 22 are connected by a bellows 23, and if the diameter or plane of the lower elevator shaft 22 side is square, one side of the diameter or plane of the lower elevator shaft 22 is connected to the The width has been widened by that amount to allow for the relative displacement difference between the upper and lower Inner structures (3.4 mm) due to earthquake input.

Cage rail 9 and balance weight rail 11
is suspended by the ground floor structure 3 side as in the embodiment shown in FIG.

Therefore, the cage 12 moves integrally in the same direction as the ground floor structure 3 via the cage rail 9. Each elevator shaft 21,22 has a respective ground floor structure 3. It forms a part of the frame of the underground floor structure 4, and there is no need to consider the holding structure as shown in FIG.

(Effects) As described in detail above, according to the elevator structure for a seismically isolated building according to the present invention, there is a dedicated hoistway that vertically penetrates the upper structure and the lower structure, and an upper structure within this R-way. A cage rail is provided hanging from the body, and a hoisting machine is provided which is integrated with the upper structure and installed at the top of the upper structure, and the cage moves up and down along the cage rail, so that the cage is moved into the lower structure. Even if an earthquake is applied while the cage is moving, the cage will move at a constant velocity in the same direction as the superstructure.
It has the effect of being able to move linearly between the upper structure and the lower structure while obtaining a motion with an acceleration input lower than the acceleration due to the earthquake input, that is, a seismic isolation effect.

[Brief explanation of drawings]

The figures all relate to embodiments of the present invention; Fig. 1 is a vertical cross-sectional view showing an elevator in a building divided into upper and lower parts;
FIG. 3 is a partial cross-sectional view showing a part of the figure in detail by enlarging it, and FIG. 3 is a vertical cross-sectional view showing an elevator according to another embodiment of the building, which is divided into upper and lower parts. 1... Elevator - 2... Seismic isolation building 3... Basement floor structure 4... Basement floor structure 5... Laminated rubber bearing 6... Basement wall 7... Vent house 8... Elevator shaft 9...Rail for cage 10...Balance weight 11...Rail for balance weight 12...Cage 13...Hoisting machine 14...Rope 15
...Floor slab 16...Holding mechanism 17...
・Holding plate 18...Coil spring 19...
Filling 20... Ground 21... Upper elevator shaft X/foot 22... Lower elevator shaft 23... Bellows

Claims (1)

[Claims] A seismic isolation building in which the building is separated into an upper structure and a lower structure, and a seismic isolation device is interposed between the separated upper structure and the lower structure to isolate the upper structure. In the elevator structure, a dedicated hoistway that continuously connects the upper structure and the lower structure of the seismic isolation building, a cage rail suspended and fixed to the upper structure side in the hoistway, and the upper part. An elevator structure for a seismically isolated building consisting of a cage that is suspended via a rope by a hoisting machine installed on the structure side, and that moves vertically within the dedicated hoistway along the cage rail.