JP3612573B2 - Suspended floor structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suspended floor structure type structure in which a floor is suspended and supported by a core , and more specifically, supports a suspended floor of a high-rise building having a particularly large aspect ratio, and horizontal forces such as earthquakes are applied to the core of the building. The suspension floor relates to a structure that is damped only by being displaced in the horizontal direction.
[0002]
[Prior art]
As a structure of a suspended floor structure in which a floor is suspended and supported by a wire in order to resist horizontal force such as an earthquake or strong wind, or a structure provided with a vibration control structure using a wire, for example, the following (1) Techniques (1) to (3) are known.
(1) As a technique to be implemented for a structure such as a high-rise building constructed with a suspended floor structure and having a large aspect ratio, a core b is erected on the ground a as shown in FIG. There is a structure in which a rigid beam c such as a truss is constructed on the rooftop, and columns d-1, d-2 and a floor e are suspended and supported on the rigid beam c.
[0003]
(2) Although it is not a high-rise building, a suspended structure described in JP-A-60-148965 is also known. As shown in FIG. 5, in this suspended structure, a shaft g is erected on a ground a via a foundation f, and a vibration absorbing device h is provided at an upper end portion of the shaft g. A roof i, a wall w, and a floor e are suspended therethrough. As shown in FIG. 5B in an enlarged manner, the vibration absorbing device h includes a roof holder m formed to project radially from the upper end of the shaft g, and a sliding frame n movable in the vertical direction along the shaft g. Are connected by an elastic body p such as a spring, and the base end portion of the wire j supporting the roof i is fixed to the sliding frame n.
[0004]
(3) As a technique for applying a vibration damping structure using a wire to a high-rise building having a large aspect ratio that is not a suspended structure, for example, a technique described in JP-A-6-58016 is known. As shown in FIG. 6, in this vibration damping structure, both ends of the wire j are fixed to both ends of the top of the high-rise building, and horizontal pulleys s, s are provided at both ends of the lower end of the high-rise building. The wire j is stretched in the vertical direction along the columns q, q at both ends of the high-rise building, and an intermediate portion of the wire j is wound around the horizontal pulleys s, s and transmitted to the wire j. damping device t to absorb vibration energy of the building are attached to the wire j located below rise building. The bending moment acting by applying a horizontal force to the high-rise building generates a tensile force and a compressive force at the columns q, q at both ends of the high-rise building, and is transmitted to the damping device t via the wire j. absorbed by t.
[0005]
[Problems to be solved by the present invention]
Core b in suspended floor structure (Fig. 4) of the (1), because the aspect ratio is large, for example, when the horizontal force in the right direction in FIG. 4 acts, as shown in Figure 4B, vertical core b 'results in a bending deformation to the position of b. At the same time, beam c is also rotated, which is secured to the top of the core b, column d-1 and d-2, which is suspended at both ends of the beam c is also inclined rather to the right. Therefore, there is a problem in that the floor e of each floor is inclined, the safety of the high-rise building cannot be secured, and the resident is uncomfortable. Further, due to the rotation of the beam c, an excessive tensile force acts on the left column d-1 in FIG. 4B, and an excessive compressive force acts on the column d-2. Similarly, when a horizontal force in the left direction acts, an excessive tensile force acts on the right column d-2, and an excessive compressive force acts on the column d-1. For this reason, the cross sections of the columns d-1 and d-2 must be made excessive, which adversely affects the construction plan and causes a rise in construction costs.
[0006]
The structure shown in FIG. 2 (FIG. 5) supports the floor e with only the wire j and the shaft g bears the horizontal force, so that the column is unnecessary. And since the upper end of the said wire j is fixed to the sliding frame n of the vibration-absorbing device h provided in the upper end part of the shaft g, and the sliding frame n is a structure which can move only to the orthogonal | vertical direction with the elastic body p, The vibration in the vertical direction transmitted to the shaft g is absorbed by the kinetic energy of the elastic body p, and the transmission to the floor e fixed to the sliding frame n via the wire j is relaxed. However, when a large horizontal force acts and the shaft g swings to the left and right, the wire j is fixed (fixed) to the upper end of the shaft g, so that the floor e will be inclined and maintain a horizontal state permanently. It becomes impossible.
[0007]
The vibration damping structure (3) in FIG. 3 is not a suspended floor structure, but the bending moment acting on the structure can be absorbed by the wire j and the damping device t. However, the column q may still bend and deform in the left-right direction with respect to a large horizontal force. In such a case, the floor (not shown) constructed between the columns q and q is inclined, It is impossible to maintain the state constantly. Further, in order to withstand an excessive tensile force and compressive force acting on the columns q, q, the column cross section must be enlarged, and there is a problem similar to the above (1).
[0008]
Therefore, the object of the present invention is to apply horizontal forces such as earthquakes and strong winds only to the bending deformation of the core in a suspended floor structure, particularly in a high-rise building with a suspended floor structure with a high aspect ratio. Due to the deformation of the core, the suspension floor is displaced only in the horizontal direction and the suspension floor is maintained in a horizontal state for vibration suppression, providing a comfortable and safe structure. An object of the present invention is to provide a suspended floor structure that can reduce the stress of a column, reduce the cross section of the column as much as possible, reduce the amount of steel frames, ensure a good view, and reduce the construction cost.
[0009]
[Means for Solving the Problems]
As means for solving the above-described problems of the prior art, the suspended floor structure according to the invention of claim 1 is a suspended floor structure in which the floor 3 is supported by being suspended from the top of the core 2 standing on the ground 1. The structure of
The scaffold 4 is placed on top of the core 2, the wire 5 slidably supported to the support member 4, and supported by hanging the top floor of the bed 3 at both ends of the wire 5, the following Each floor 3 is suspended and supported by the pillar 6 from the top floor 3, and the suspended floor 3 and the core 2 do not contact between the outer peripheral surface of the core 2 and the suspended floor 3 when the suspended floor 3 is horizontally displaced. A clearance 7 of a certain degree is provided, and the suspension floor 3 is configured to be displaced only in the horizontal direction with respect to the bending deformation of the core 2.
[0010]
Structures suspended floor structure according to the invention of claim 2 is the structure of the hanging floor structure for supporting hanging each floor K ... floor 3 of the outer periphery of the core 2 standing on the ground 1,
Established the scaffold 4 ... on the floor 3 ... upper portion of the floor K in the core 2, the wire 5 slidably supported on each floor K ... scaffold 4 ... of the floor at both ends of the wire 5 bed and supports I suspended the 3, between the floor 3 hanging and the outer peripheral surface of the core 2, hanging suspension same during the horizontal displacement of the floor 3 bed 3 and the clearance 7 of the extent to which the core 2 is not in contact is provided, wherein The suspension floor 3 of each floor K is configured to be displaced only in the horizontal direction independently of the bending deformation of the core 2.
[0011]
請 structures suspended floor structure according to the invention Motomeko 3, the bearing body 4 which is disposed above the outer periphery of claim 1 or the top of the core 2 in the 2 or floor of the floor 3, with pulleys or rollers or sliding bearings It is characterized by comprising.
[0012]
Structures suspended floor structure according to the invention of claim 4 is characterized in that that incorporates a damping device the bearing member 4 in claim 1 or 2 or 3.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Structures suspended floor structure according to the present invention is a high-rise building or the like which is built in a large pencil aspect ratio, the high layer building suspended floor structure format supporting hanging the core or al floor and forming a core It is preferably implemented.
High-rise buildings suspended floor structure as claimed in claim 1, as shown in FIG. 1A, in the center of the building, erected core 2 formed by concentrating the vertical elevators and the pipe shaft or the like on the ground 1 Has been. Two support bodies 4 are installed at the corner of the top (rooftop) of the core 2. However, the number of the support bodies 4 is not limited to two, and may be implemented by a plurality of four or the like, or in an extreme case, it may be implemented by one as shown in FIG.
[0014]
The support body 4 is preferably implemented by a grooved pulley (not shown) as in claim 3 , but can also be implemented by a grooveless roller, a sliding bearing, or the like. In addition, the supporting Uketamawakarada 4, as claimed in claim 4, the damping device (not shown) preferably carried out by arranging or incorporate. A high-strength wire 5 is slidably supported around a pulley as the support body 4, and ends of the uppermost floor 3 are fixed to both ends of the wire 5. And the floor 3 which forms each following floor K ... by the pillar 6 is suspended and supported from the top floor 3 and the plurality of floors 3 are suspended from the top of the core 2 and supported by the wire 5. A high-rise building is constructed.
[0015]
The floor 3 and the core 2 are usually in contact with each other when the floor 3 is horizontally displaced as in the third aspect, between the suspended floor 3 of each floor, the outer peripheral surface of the core 2 and the suspended floor 3. It is carried out with a clearance (gap) 7 of a degree not to be secured (see FIG. 1B). The clearance 7 is formed, for example, by cutting out a portion of the suspended floor 3 that is a slightly larger cross-sectional portion of the core 2.
[0016]
Thus the core, for example, in FIG. 1B, the horizontal force in the right direction indicated by the arrow acts on the high-rise building, indicated by a broken line in FIG. 1B, the core 2 for vertically upright 'is indicated by a solid line As shown in Fig. 2, it bends slightly to the right and deforms. At that time, the suspension floor 3 is slightly displaced in the right direction in the figure while maintaining the horizontal state by the wire 5 suspending the floor 3 sliding on the support body 4. Since the floor 3 is provided with the clearance 7 as described above, there is no possibility of contact with the core 2 even in the horizontal displacement. That is, when a horizontal force acts on the high-rise building, the bending deformation of the core 2 and the deformation of the floor 3 are separated, and the horizontal force that is effectively damped by the damping device incorporated in the support body 4 is applied only to the core 2. Since it is configured to dampen and dampen and not transmit to the floor 3 at all, tensile force (compression force to the column 6-2) does not act on the column 6-1 and the column cross section is reduced as much as possible. be able to. Moreover, the wire 5 should just be designed so that only a long-term stress can be borne.
[0017]
A form (Claim 2) in which the floor 3 suspended by the wire 5 via the support body 4 is implemented for each floor K ... is also preferably performed. That is, as shown in FIG. 3, the high-rise building has a suspended floor structure in which the floor 3 is suspended and supported from each floor K in the outer peripheral portion of the core 2. (However, the number is not limited to these two). The support bodies 4 and 4 are installed, and the wires 5 are slidably wound around the support bodies 4 and 4 of each floor K. The floors 3 are suspended and supported. Therefore, when a horizontal force acts on the high-rise building, the core 2 'responds to bending deformation like the core 2, and the suspended floor 3 of each floor K is independently displaced only in the horizontal direction. Can be reasonably controlled with the minimum necessary horizontal displacement corresponding to the height of each floor K.
[0018]
[Effects of the present invention]
According to the suspended floor structure of the present invention, particularly in a high-rise building with a high aspect ratio, the deformation of the core and the floor is completely separated and independent by the wire sliding on the support body. Even if the force acts on the high-rise building, the horizontal force is only borne by the bending deformation of the core, the suspended floor is displaced only in the horizontal direction and is damped, and the horizontal state of the suspended floor is maintained permanently. Comfort and safety are ensured for residents. In addition, since the horizontal force is not transmitted to the pillar (floor), the stress of the pillar due to the deformation of the core is reduced. As a result, the cross section of the pillar can be reduced, the amount of steel frame is reduced, the construction cost is reduced, and the Ensuring a good view, increasing the degree of freedom of architectural planning, etc. are achieved.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a high-rise building having a suspended floor structure, and FIG.
FIG. 2 is a schematic diagram showing a different embodiment.
FIG. 3 is a schematic diagram showing an application example.
FIGS. 4A and 4B are schematic views showing a conventional example. FIGS.
FIGS. 5A and 5B are an overall view and a partially enlarged view showing different conventional examples, respectively.
FIG. 6 is an overall view showing a different conventional example.
[Explanation of symbols]
1 Ground 2 Core 3 Floor 4 Bearing 5 Wire 6 Pillar 7 Clearance

Claims (4)

A suspended floor structure that supports a floor suspended from the top of a core erected on the ground,
Scaffold is placed on top of the core, wire the scaffold is slidably supported, said are the top floor of the floor are suspended and supported at both ends of the wire, following each floor is the top floor The suspension is supported by a pillar from the floor, and a clearance is provided between the outer peripheral surface of the core and each suspension floor so that the suspension floor does not contact the core when the suspension floor is displaced horizontally . The suspended floor structure is characterized in that the suspended floor is displaced only in the horizontal direction in response to bending deformation. A suspended floor structure that supports the floor of each floor by suspending it on the outer periphery of the core standing on the ground,
Scaffold is placed on top of each floor in the core, wire is slidably supported on the supporting body of said floor, said being each floor of the floor are suspended support at both ends of the wire, the outer peripheral surface of the core Clearance between the suspension floor and each suspension floor is provided such that the suspension floor and the core do not come into contact with each other when the suspension floor is horizontally displaced. A suspended floor structure, characterized in that the structure is displaced only in the horizontal direction. The suspended floor structure according to claim 1 or 2, wherein the support body installed on the top of the core or the upper outer periphery of the floor of each floor is constituted by a pulley, a roller, or a sliding bearing. The suspended floor structure according to claim 1, 2 or 3 , wherein a damping device is incorporated in the support body.

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