JPH0549595B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field>> The present invention relates to an elevator structure for a seismically isolated building, particularly for a seismically isolated building having a basement floor.

《Prior art》 Currently, there are only a few seismically isolated buildings in which the load of the building is taken care of by seismic isolation devices, and conventional examples are limited. When seismic isolation devices (laminated rubber bearings, etc.) were installed in the area, it became necessary to secure a space that also serves as a dry area and allow for the vibration amplitude of seismic isolation, as well as retaining the surrounding ground and retaining walls to prevent underground water. .

On the other hand, since very large stresses and displacements do not occur in the underground parts of buildings, it is questionable whether it is necessary to provide seismic isolation to 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 in which the ground floor and basement floor are divided into two, a displacement difference occurs between the ground floor and the basement floor when an earthquake is input. This displacement difference is determined by the interlayer displacement of the seismic isolation device, and is approximately 30 cm in the horizontal direction.

Therefore, elevators must be installed separately, one for underground floors and one for ground floors. For this,
If you are trying 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 circumstances, and its purpose is to provide a seismic isolation building that has an upper structure and a lower structure separated. To provide an elevator structure for a seismically isolated building that can communicate with a structure in a straight line in the vertical direction.

<<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 comprises a building separated into an upper structure and a lower structure, and the separated upper structure. In an elevator structure for a seismically isolated building in which the upper structure is seismically isolated by interposing a seismic isolation device between the structure and the lower structure, the elevator structure is fixed to the upper structure, and is attached to the upper structure and the lower structure. a cylindrical dedicated hoistway defining a vertical space communicating with the lower structure; horizontal displacement difference tolerance means provided in the lower structure for allowing a horizontal displacement difference between the dedicated hoistway and the lower structure; A cage rail is suspended and fixed to the upper structure side in the hoistway, and the cage is suspended via a rope by a hoisting machine installed on the upper structure side, and the dedicated hoistway is suspended along the cage rail. It consists of a cage that moves vertically inside the cage.

In addition, a building is separated into an upper structure and a lower structure, and a seismic isolation device is interposed between the separated upper structure and lower structure to isolate the upper structure. In a building elevator structure, a first dedicated hoistway is fixed to the upper structure and defines a vertical space that communicates in the upper structure; A second dedicated hoistway that defines a vertical space and is arranged between the first and second dedicated hoistways, communicates the first and second dedicated hoistways, and connects the first and second dedicated hoistways to each other. a horizontal displacement difference tolerance means for allowing a horizontal displacement difference with the dedicated hoistway of No. 2, and a cage rail suspended and fixed to the upper structure side in the hoistway;
The cage is suspended via a rope by a hoisting machine installed on the upper structure side, and is moved vertically within the dedicated hoistway along the cage rail.

《Operation》 The hoist, the cage rail, and the casing swing integrally with the upper structure in the same direction. Therefore, no difference in horizontal displacement occurs in the middle of the vertical movement of the cage, thereby providing an elevator that communicates between the upper structure and the lower structure.

<<Example>> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention. In the same figure, a seismic isolation building 2 equipped with an elevator 1 has a laminated rubber bearing 5 between a ground floor structure 3 and an underground floor structure 4. are intervening.

The top surface of the underground floor structure 4 is at approximately the same level as the ground level, and this underground floor structure 4
A laminated rubber bearing 5 is arranged on the top of the building, and the load of the ground floor structure 3 is borne by the laminated rubber bearing 5.

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, at the time of earthquake input, the basement wall 6 of the basement floor structure 4 is in a state where the outer peripheral surface is evenly restrained by the surrounding ground 20, and the basement 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 that combines a bag-shaped air spring filled with air and a steel rod bent into a loop shape.

The above-ground floor structure 3 is placed on the laminated rubber bearing 5, and is seismically isolated on the underground structure 4, which swings together with the ground 20. In fact, even during strong winds, horizontal displacement differences occur.

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

A cage 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 parallel to the cage rail 9. The cage 12 is suspended from the tip of a rope 14 wound around a hoist 13 in a penthouse 7, and moves up and down inside an elevator shaft 8 while being guided by a cage rail 9.

In addition, the elevator shaft 8 is located in the underground floor structure 4.
The part passing through is a holding mechanism 16 as a horizontal displacement difference tolerance means that is in contact with each floor slab 15 of the basement structure 4 for the purpose of absorbing the shaking of the basement structure 4 during an earthquake.
has been established. The details are shown in Figure 2.

That is, a holding plate 17 is attached to the outside of the elevator shaft 8 to sandwich the end of the floor slab 15 from above and below. There is a distance between the outer surface of the elevator shaft 8 and the end surface of the floor slab 15 that is equal to or greater than the amount of interlayer displacement of the laminated rubber bearing 5, and a coil spring 18 or the like is installed in this gap as necessary. For fire prevention reasons, a padding 19 of rock wool, glass wool, etc. is inserted to prevent the floor from entering other floors.

The hanging portion of the elevator shaft 8 is free to move horizontally from the floor slab 15 by the holding mechanism 16 and also has a supporting force.

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 structure 3 and the underground floor structure 4 does not pose a problem.

FIG. 3 shows another embodiment. In this embodiment, even without the holding mechanism 16, 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 vertically formed in the ground floor structure 3 and the underground floor structure 4, and has an upper elevator shaft (first dedicated hoistway) 21 that is integrated with the ground floor structure 3. and a lower elevator shaft (second dedicated hoistway) 22 that is integrated with the underground floor structure 4. The elevator shaft 21 and the elevator shaft 22 are connected by a bellows 23 as a horizontal displacement difference tolerance means, and if the diameter or plane of the lower elevator shaft 22 side is square, one side of it is connected to the laminated rubber support 5. The width is widened by the amount of interstory displacement to allow for the relative displacement difference between the upper and lower floor structures 3 and 4 due to earthquake input.

The cage rail 9 and the balance weight rail 11 are 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 forms a part of the frame of the ground floor structure 3 and the underground floor structure 4, respectively, and there is no need to consider a holding mechanism as shown in FIG. 2.

<<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 a dedicated hoistway between the upper structure and the lower structure. The cage comprises a horizontal displacement difference tolerance means for allowing a horizontal displacement difference, a cage rail hanging down from the upper structure in the hoistway, and a hoisting machine installed integrally with the upper structure and at the top of the cage. moves up and down along the above-mentioned cage rails, so even if the cage receives seismic input while moving in the lower structure, the cage moves at a uniform speed in the same direction as the upper structure and will not be affected by the earthquake. 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 input, that is, a seismic isolation effect.

[Brief explanation of the drawing]

The drawings all relate to embodiments of the present invention; Fig. 1 is a vertical sectional view showing an elevator in a building divided into upper and lower halves, Fig. 2 is a partial sectional view showing an enlarged part of Fig. 1 in detail; FIG. 3 is a vertical sectional view showing an elevator according to another embodiment of the building, which is divided into two parts, upper and lower. 1...Elevator, 2...Seismic isolation building, 3...
Ground floor structure, 4... Basement floor structure, 5... Laminated rubber bearing, 6... Basement wall, 7... Penthouse, 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, 1
6... Holding mechanism, 17... Holding plate, 18... Coil spring, 19... Filling, 20... Ground, 21...
... Upper elevator shaft, 22 ... Lower elevator shaft, 23 ... Bellows.

Claims (1)

[Claims] 1. The upper structure can be constructed by separately configuring a building into an upper structure and a lower structure, and interposing a seismic isolation device between the separated upper structure and lower structure. In the elevator structure of a seismically isolated building, a cylindrical dedicated hoistway is fixed to the upper structure and defines a vertical space communicating with the upper structure and the lower structure, and established,
A horizontal displacement difference tolerance means for allowing a horizontal displacement difference between the dedicated hoistway and the lower structure, a cage rail suspended and fixed to the upper structure side in the hoistway, and a cage rail installed on the upper structure side. An elevator structure for a seismically isolated building comprising a cage suspended via a rope by a hoist and moved vertically within the dedicated hoistway along the cage rail. 2. A seismic isolation building in which the building is separated into an upper structure and a lower structure, and the upper structure is seismically isolated by interposing a seismic isolation device between the separated upper structure and lower structure. In the elevator structure, a first dedicated hoistway is fixed to the upper structure and defines a vertical space in communication with the upper structure; a second dedicated hoistway that defines a space; and a second dedicated hoistway that is disposed between the first and second dedicated hoistways;
a horizontal displacement difference tolerance means that communicates the first and second dedicated hoistways and allows a horizontal displacement difference between the first and second dedicated hoistways; A cage that is suspended and fixed on the body side and a cage that is suspended via a rope by a hoist installed on the upper structure side and that moves vertically within the dedicated hoistway along the cage rail. Elevator structure of a seismically isolated building consisting of.