JP3014589B2 - Multi-layer suspension structure with suspension as main structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a main structure of a suspension capable of securing a large space directly below a column of a multi-story building by suspending the column from above from a suspension material. The present invention relates to a multilayer suspension structure.

[0002]

2. Description of the Related Art As shown in FIG. 10, a multi-story building is constructed by assembling column members 1 and beam members 2 in a lattice shape, and attaching a wall material or a floor material to the frame portion. It is constituted by. By the way, in the conventional construction method of such a multi-story building, the column 1 and the beam 2 are sequentially stacked from the lower layer to the upper layer to form the entire frame.

[0003]

However, in such a conventional multi-story building, since the pillar 1 and the beam 2 are stacked from the lower layer to the upper layer, the pillar 1 goes to the lower layer. As the load on the upper layer is applied, the lower pillar 1
Will have a large axial compression force. Therefore, there is a problem in that the lower the pillar material 1, the higher the buckling strength of the lower pillar material, and the larger the cross-sectional area of the lower pillar material 1 as compared with the upper pillar material.

SUMMARY OF THE INVENTION [0004] In view of the above-mentioned problems, an object of the present invention is to provide a multi-layer suspension structure mainly including a suspension in which a buckling load is not applied to a column member.

Further, the present invention is directed to a multi-layered suspension structure capable of achieving the above-mentioned object, and a response deformation generated in each part of the multi-layered suspension structure due to the action of an external force such as an earthquake or wind is reduced by a damping force. It is an object of the present invention to provide a multi-layer suspension structure having a suspension whose main structure is an improved vibration-proof performance.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, a pair of main frames are erected, and a suspension material is bent downwardly over the main frames, and is erected.
A pillar material constituting a building is suspended from the suspension material.

Further, the present invention is characterized in that a beam member is connected to the column member to form a skeleton, and the beam member is connected to the main frame via a damper.

Further, the present invention is characterized in that regulating means for restricting a relative displacement between the main frame and the frame to an operating direction of the damper is provided between the main frame and the frame.

[0009]

In the multilayer suspension structure having the suspension of the present invention as a main structure according to the above-described structure, the column material is suspended by suspending the suspension material between a pair of main frames. The frame is constructed by attaching beams to the pillars. Therefore, when the column material is suspended, the axial force acting on the column material becomes a tension, and it is not necessary to consider buckling, so that the cross-sectional area of the column material can be reduced.

In the present invention, by connecting the beam to the main frame via a damper, the frame supported by the main frame can be displaced relative to the main frame by the operation of the damper. . Therefore, when a displacement force such as an earthquake acts, the displacement force input from the main frame to the frame can be absorbed by the damper, so that the response deformation of the entire structure can be effectively reduced.

In a case where the relative displacement between the main frame and the frame may not be smoothly transmitted to the damper, the relative displacement between the main frame and the frame is limited in the operating direction of the damper. By providing regulation means,
A displacement force in only the operating direction of the damper is input to this damper. Therefore, it is possible to prevent the excessive damping force from acting on the damper, thereby preventing the damper from being damaged, and to sufficiently exhibit the original vibration damping action.

Further, since the restricting means has a large rigidity in a direction orthogonal to the operation direction of the damper,
By incorporating this restricting means into a seismic design and using it in an orthogonal direction, it can be an effective seismic means.

[0013]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an overall schematic diagram showing a first embodiment of a multilayer suspension structure having a suspension as a main structure according to the present invention.

That is, the multilayer suspension structure 10 of the present embodiment
As shown in FIG. 1, a pair of core pillars 14, 14 are erected as main frames at both ends of a building 12 to be constructed. Specifically, the core pillars 14 and 14 are constructed on the foundations 16 and 16 in the ground G. And the core pillar 14,
An assembled girder 18 is erected with a truss structure between the upper ends of the 14, and the core girder 14,
14 is fixed between the upper ends.

A suspension member 20 is installed between the upper portions of the core pillars 14 and 14 as a main structure. The suspension member 20 is formed of a flexible structure such as a steel cable or a chain-like structure, and both ends of the suspension member 20 are located below the assembly girders 18 so that the respective core pillars 14 are formed. , 14;
The shape as a whole is curved downward.

The column member 22 and the beam member 2 are placed in a space surrounded by the core columns 14, 14 and the assembly girders 18.
The frames 4 are assembled in a multi-layer system to form a framework of the building 12. At this time, the column members 22 are suspended from the suspension members 20. The lower end of the column member 22 suspended from the suspension member 20 terminates at a position of a predetermined height h from the ground G, and a large space S having a predetermined height h can be formed on the ground portion of the building 12.

With the above structure, in the multilayer suspension structure 10 of the first embodiment, the column member 22 is suspended from the suspension member 20 erected between the upper portions of the pair of core columns 14, 14. A large space S is formed in the ground portion by the lowered pillar 22. Therefore, when the column member 22 is suspended, the axial force of the column member 22 becomes a tension, and it is not necessary to consider buckling. For this reason, it is not necessary to make the cross-sectional area of the column member 22, especially the cross-sectional area of the lower layer part, larger than that of the upper layer part, and it is possible to reduce the weight of the entire frame part.

In this embodiment, since the column members 22 are sequentially connected from the upper side to the lower side, a large space S having a column-free structure can be easily provided in the lower layer portion as in this embodiment. The large space S can be used for multiple purposes.

By the way, in the multi-layer suspension structure 10 of the first embodiment, the natural vibration of the whole structure becomes longer as the height of the structure is increased, so that a lateral force is input due to an earthquake or the like. And the response deformation of the structure becomes remarkably large. In particular, when this multi-layer suspension structure 10 is constructed in special location conditions such as above a railway track, an underground beam as a base cannot be provided, so that the entire structure must be a flexible structure, and It is conceivable that the design becomes more difficult.

A more preferred embodiment considering such a situation will be described in detail below. In these embodiments, the core column as the main frame and the frame composed of the column member and the beam suspended from the main column can be relatively displaced, and the relative displacement between the two is limited by a damping force. This is to reduce response deformation.

2 and 3 show a second embodiment of a multi-story suspension structure having a suspension as a main structure according to the present invention. FIG. 2 is a schematic diagram showing the entire structure of a building, and FIG. It is a top view.

That is, as shown in FIG. 2, the multi-layer suspension structure 30 of this embodiment has a pair of core columns 34, 34 as a main frame standing at both ends of a building 32 to be constructed. The core pillars 34, 34 are built on the foundations 36, 36 of the ground G. A truss girder 38 is erected with a truss structure between the upper ends of the core columns 34, 34, and the truss girders 38 fix the upper ends of the core columns 34, 34.

A suspension member 40 is provided between the upper portions of the core columns 34, 34. Suspension material 40
Is formed as a large chain, for example, with flexibility as a whole, and is arranged in a parabolically downwardly curved shape as a whole.

.., And beams 44, 44... Are assembled in a multilayer structure in a space surrounded by the core columns 34, 34 and the truss girders 38.
Is constructed. At this time, the column members 42, 42 are suspended from the suspension member 40, and the axial force acting on the column members 42, 42 becomes tensile, and the column members 42, 42,. Buckling is prevented from occurring. Are suspended at a predetermined height h from the ground G, and a space S having a predetermined height h is formed in the ground portion. The above configuration is almost the same as the first embodiment.

Here, in this embodiment, the beam members 44 on each floor are connected to the core columns 34 via dampers 50, 50 (shown by white circles in the figure), respectively. It has become. The dampers 50 are arranged so as to operate in the horizontal direction (X direction) where the beam members 44, 44 ... and the core columns 34, 34 face each other. The dampers 50 may be a velocity-dependent viscous damper, a hysteretic damper-type elasto-plastic damper, or a combination thereof. In view of operation, the dampers 50 are of a passive type in which a stroke amount and a damping force according to an external force are generated, or an active type in which a stroke amount and a damping force are forcibly controlled by an external command. Alternatively, a semi-active type that switches between a passive type and an active type according to the magnitude of the input vibration amount may be used. Of course, the dampers 50, 50... Optimally set the stroke (movable deformation amount) and the resistance in each layer of the frame 46 in view of the vibration characteristics of the core columns 34, 34 and the frame 46. .

Further, in this embodiment, as shown in FIG. 3, the relative displacement between the core columns 34, 34 and the skeleton 46 is limited to the operation direction of the dampers 50, 50. A regulating means 52 is provided. The regulating means 5
2 is a horizontal direction (Y direction) perpendicular to the X direction from the opposing surfaces of the core column 34 and the skeleton 46.
The brackets 54 and 56 are protruded from the brackets 54 and 56 at appropriate intervals, and a link 58 is rotatably connected between the distal ends of the brackets 54 and 56. The pivotal connection between the brackets 54 and 56 and the link 58 is closely fitted without play, so that the link 58 is prevented from tilting in the vertical direction.

With the above structure, in the multi-layer suspension structure 30 of the present embodiment, the beam members 4 of each floor constituting the frame 46 are provided.
Are connected to the core columns 34, 34 via dampers 50, 50, respectively, so that the frame 46 is moved by the operation of the dampers 50, 50.
.. Can be displaced relative to. Therefore, when a displacement force such as an earthquake is input to the building 32, the core columns 34, 34
The displacement force input to the frame 46 from the damper 50,
50 ... can be absorbed. Therefore, the amount of the input vibration transmitted from the core columns 34, 34 to the frame 46 can be greatly reduced, and the response deformation of the entire building 32 can be effectively reduced.

In the present embodiment, the core column 34
A regulating means 52 comprising brackets 54 and 56 and a link 58 is provided between the
Relative displacement between the frame and the frame 46 in the X direction, that is, the damper 50,
Are limited to the operating directions of the dampers 50, so that when a displacement force such as an earthquake is input to the building 32, an excessive lateral force acts on the dampers 50 by the displacement force. 50 can be prevented from being torn or damaged.

In the restricting means 52 of this embodiment, since both ends of the link 58 are pivotally connected, the link 58 is strictly centered on one pivot point with respect to the input displacement in the X direction. Although the other end performs an arc motion, the amplitude of the input displacement is extremely small, so that the input is almost input to the damper 50 as a displacement in the operation direction, and does not hinder the operation of the damper 50.

FIG. 4 shows a regulating means 60 showing a modified embodiment.
One of the core column 34 and the frame 46 (in the present embodiment, the core column 3
4) A rigid rail 62 is projected from the other side (the frame 46 in the present embodiment) at right angles to the other side (the frame 46 in the present embodiment). A plurality of rollers 6 closely contacting this rail 62
The regulating means 60 is constituted by providing 4, 64...

Therefore, even in this embodiment, the rail 62
Are restricted by the rollers 64, and the movement of the rail 62 is regulated, so that the relative movement direction between the core column 34 and the skeleton 46 is regulated in the operating direction (X direction) of the dampers 50, 50. be able to.

FIGS. 5 and 6 show a regulating means 70 showing another modified embodiment, in which two linear guides 7 from one side of the core column 34 are provided.
The restricting means 70 is formed by projecting a first restricting plate 72 formed with 2a and projecting a second restricting plate 74 formed with a groove guide 74a for receiving the linear guide 72a from the frame 46. It is. The first and second regulating plates 72 and 74 are arranged along the upper and lower surfaces such that their respective tips overlap each other. The linear guide 72a and the groove guide 74a fitted to each other form a sliding material 76.
, It is slid with low friction.

Therefore, even in this embodiment, the first and second
By the regulating plates 72 and 74, the relative movement direction between the core column 34 and the frame 46 can be regulated in the operating direction (X direction) of the dampers 50, 50.

By the way, as shown in FIG. 2, in the multilayer suspension structure 30 of the second embodiment, a pair of core columns 34, 34 are formed in a gate shape, and a frame 46 is provided between the core columns 34, 34. Although the arrangement is disclosed, the invention is not limited to this, and may be configured as shown in each embodiment of FIGS. 7 to 9.

That is, in the multilayer suspension structure 30a of the embodiment shown in FIG. 7, a core column 34a as a main frame is formed in a T-shape, and a frame 46 is arranged on both sides of the T-shaped core column 34a. , The beam members 44, 44...
The dampers 50, 50,... Therefore, even in this embodiment, the amount of input vibration transmitted from the core column 34a to the frame 46 can be reduced, and the response deformation of the entire building 32 can be effectively reduced.

Next, the multi-layer suspension structure 30b of the embodiment shown in FIG. 8 is provided with a pair of core pillars 34b, 34b, between the core pillars 34b, 34b and between the respective core pillars 34b.
The present invention is applied to a structure in which a skeleton 46 is arranged outside the b and 34b. Therefore, even in this embodiment, the beam members 44 of the skeleton 46 and the core columns 34b, 34b
.. Can be reduced by interposing the dampers 50, 50...

In the multi-layer suspension structure 30c of the embodiment shown in FIG. 9, the present invention is applied to a structure in which a main frame is formed in an arch-like member 34c and a frame 46 is arranged inside the arch-like member 34c. Things. Therefore, even in this embodiment, the skeleton 46 and the arch-shaped member 3 are similar to the above-described embodiments.
.. Can be reduced by interposing the dampers 50, 50.

In each of the embodiments shown in FIGS. 7 to 9, the core pillars 34a and 34b and the arch-shaped member 34c are also provided.
It is preferable to provide a restricting means between the frame and the frame 46 to restrict the relative movement direction of the two to the operating direction of the dampers 50, 50. Incidentally, the regulating means is shown in FIG. 3 or FIG.
Alternatively, the configuration is not limited to the configuration shown in FIGS. 5 and 6, but may be any configuration in which the relative movement direction between the core columns 34, 34a, 34b and the arch-shaped member 34c and the skeleton 46 can be limited to the operation direction of the dampers 50, 50. I just need.

In the above-described embodiment, the structure in which the dampers are installed on all the beams constituting each floor and the beams are connected to the core columns and the like has been described. Needless to say, the dampers may be arranged only on the appropriate beam members, that is, on appropriate floors. In this case, a sliding support or a rotary support is applied to a connection portion between the beam member and the main frame where no damper is provided, and the two are connected.

[0040]

As described above, in the multilayer suspension structure having the suspension as a main structure according to the first aspect, a suspension material is erected between a pair of upright main frames, and the suspension material is mounted on the suspension material. Since the column is suspended to form a skeleton, tensile force acts on the column, so it is not necessary to consider buckling of this column, and it is possible to reduce the cross-sectional area. it can. Therefore, by reducing the cross-sectional area of the column member, it is possible to reduce the weight applied to the suspension member by reducing the weight of the entire frame portion. In addition, in the suspended structure, the pillars are connected sequentially from top to bottom, so a large space without pillars can be easily provided in the lower part of the building, and this large space greatly increases diversity. Can increase.

In the double-layered suspension structure according to the second aspect, the beam of the skeleton supported by the main frame is connected to the main frame via a damper. The frame can be relatively displaced, and a displacement force such as an earthquake input from the main frame to the frame can be absorbed by the damper, thereby effectively reducing the response deformation of the entire structure. . Therefore, it is possible to remarkably reduce the swing of the building using the multilayer suspension structure when the displacement force is input.

According to a third aspect of the present invention, a restricting means is provided between the main frame and the skeleton to restrict a relative displacement between the main frame and the skeleton in an operation direction of the damper. The displacement force in only the operating direction of the damper is input to the building using the multilayer suspension structure by the restricting means. Therefore, it is possible to prevent the excessive damping force from acting on the damper, thereby preventing the damper from being damaged, and to sufficiently exhibit the original vibration damping action.

Further, since this restricting means has a large rigidity in a direction perpendicular to the direction of operation of the damper, by incorporating this restricting means into a seismic design and using it in a perpendicular direction, it becomes an effective seismic means. obtain.

[Brief description of the drawings]

FIG. 1 is an overall schematic configuration diagram showing a first embodiment of a multilayer suspension structure having a suspension as a main structure according to the present invention.

FIG. 2 is an overall configuration diagram schematically showing a second embodiment of the present invention.

FIG. 3 is a plan view of an essential part showing one embodiment of a regulating means used in a second embodiment of the present invention.

FIG. 4 is a main part plan view showing a modified example of the regulating means used in the second embodiment of the present invention.

FIG. 5 is a main part plan view showing another modified example of the regulating means used in the second embodiment of the present invention.

FIG. 6 is a partial perspective view showing a main part of the regulating means of FIG.

FIG. 7 is an overall configuration diagram schematically showing another embodiment of a multilayer suspension structure having a suspension as a main structure according to the present invention.

FIG. 8 is an overall configuration diagram schematically showing another embodiment of the multilayer suspension structure of the present invention.

FIG. 9 is an overall configuration diagram schematically showing still another embodiment of the multilayer suspension structure of the present invention.

FIG. 10 is an overall schematic configuration diagram showing a skeleton of a conventional building.

[Explanation of symbols]

10, 30 Multilayer suspension structure 12, 32 Building 14, 34, 34a, 34b Core column 18, 38 Assembled girders 20, 40 Suspension member 22, 42 Column member 24, 44 Beam member 34c Arch member 46 Frame 50 Damper 52 , 60,70 Regulatory means

──────────────────────────────────────────────────続 き Continuing from the front page (73) Patent holder 000000549 Obayashi Gumi Co., Ltd. 4-33, Kitahamahigashi, Chuo-ku, Osaka-shi, Osaka (72) Inventor Isamu Saiki 1-6-5, Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company Inside (72) Inventor Takaya Umino 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Inventor Shigenori Nakahara 2-6-1, Yoyogi, Shibuya-ku, Tokyo Shares of JR East Consultants In-house (72) Inventor Teruyoshi Iimori 2-6-6 Yoyogi, Shibuya-ku, Tokyo Inside JR East Japan Architectural Design Office (72) Inventor Jiro Tajima 3-5-2 Kamitada, Nakano-ku, Tokyo (72) Inventor Kanji Nagata 2-3-3 Kandajicho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office ( 72) Inventor Kenichi Kaminaga 2-3-3 Kandaji-machi, Chiyoda-ku, Tokyo Obayashi-gumi Tokyo head office (72) Inventor Shingo 2-3-Kandaji-cho, Chiyoda-ku, Tokyo Obayashi gumi Tokyo headquarters (72) Inventor Matsutaro Seki 4-640 Shimoseito, Kiyose-shi, Tokyo Inside Obayashi Corporation Technical Research Institute (72) Inventor Takeshi Sano 4-640 Shimoseito, Kiyose-shi, Tokyo Inside Obayashi Technical Research Institute (56) References JP JP-A-63-293246 (JP, A) JP-A-63-60374 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 1/34

Claims (3)

(57) [Claims] 1. A pair of main frames are erected, and a suspension member is bent downwardly across the main frames, and is erected.
A multi-layer suspension structure having a suspension as a main structure, in which a pillar material constituting a building is suspended from the suspension material. 2. The main structure of a suspension according to claim 1, wherein a beam is connected to the column to form a skeleton, and the beam is connected to the main frame via a damper. Multi-layer suspension structure. 3. The suspension according to claim 2, wherein a restricting means for restricting a relative displacement between the main frame and the frame to an operating direction of the damper is provided. Multi-layer suspension structure.