JP3002626B2 - Multi-layer suspension structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, in the case of constructing a building above a large space portion having a pillarless structure on the ground portion, for example, an existing railway is covered with the large space portion. There are various construction methods for constructing a building above, and all of them basically construct a frame structure in which a column material and a beam material are combined in a normal form.

[0003]

By the way, in the framework of the multi-layer suspension structure in which the column member and the beam member are formed by the usual combination as described above, the suspension member is rigidly connected to the column member and the beam member. become. When the suspension material is rigidly connected to the column material and the beam material in this way, when a horizontal force acts on the building due to an earthquake or the like, the suspension material formed of a steel material having a predetermined length exerts a truss effect, and Since the rigidity is increased at the level where the suspension material is inserted, or a large stress is generated at the joint of the suspension material, it is extremely difficult to calculate the rigidity of the entire building, and more and more are calculated at the design stage. There is a problem that an analysis experiment or a model calculation is required, and extra labor is required.

In view of the above-mentioned problems, the present invention prevents the suspension member from coming into contact with the column member and the beam member other than the suspended portion of the column member, thereby greatly simplifying the calculation of the strength of the frame portion. It is an object of the present invention to provide a multi-layer suspension structure that can be performed accurately.

[0005]

According to the present invention, a pair of core pillars are erected, and a suspension material is erected downwardly over the core pillars.
This suspension material is a multi-layered suspension structure in which a pillar material constituting a building is suspended, and a column and a beam in a portion where the suspension material is arranged are formed in a double structure in which an appropriate gap is provided. A suspension material is inserted into a central portion between the column and the beam thus formed, and an appropriate portion of the suspension material is pin-connected to the column material via a connecting material.

[0006]

According to the above structure, in the multi-layer suspension structure of the present invention, the pillar is suspended from the suspension material provided between the pair of core pillars, and the axial force acting on the pillar is provided. It is not necessary to consider buckling due to tension, so the cross-sectional area of the column material can be reduced. By the way, the pillars and beams in the portion where the suspension material is arranged are appropriately spaced to have a double structure, and the suspension material is inserted and pin-connected between the pillars and beams having the double structure. Can be arranged without being rigidly connected to columns and beams. Therefore, in terms of structural strength, the suspension member does not affect the skeleton portion composed of the column member and the beam member in an indefinite manner, and the strength of the skeleton portion can be calculated relatively easily.

[0007]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 3 show an embodiment of a multi-story suspension structure according to the present invention. FIG. 1 is a front view showing the entire structure of a building, FIG. 2 is an enlarged front view of a main part, and FIG. It is an enlarged side view.

That is, the multilayer suspension structure 10 of the present embodiment is
As shown in FIG. 1, a pair of core pillars 14 are provided upright at both ends of a building 12 to be constructed. Specifically, core pillars 14 and 14 are provided on foundations 16 and 16 of the ground G.
Is constructed. A truss girder 18 is erected with a truss structure between the upper ends of the core columns 14, 14.
The truss girders 18 fix the upper ends of the core columns 14, 14.

A suspension member 20 is provided between the upper portions of the core pillars 14 and 14. The suspension member 20 includes a plurality of suspension units 20a formed by stacking steel plates having appropriate lengths.
They are combined into a chain-like structure and are formed as a whole with a flexible structure. Both ends of the suspension member 20 are attached to the respective core pillars 14 and 14 under the truss girders 18, and are arranged in a parabolically curved shape as a whole.

[0010] In a space surrounded by the core columns 14, 14 and the truss girders 18, the column members 24 and the beam members 26 are assembled in a multi-layer system to construct the framework of the building 12. At this time, the upper ends of the column members 24 are respectively pin-connected to the truss girders 18 and the beam members 26
Are also pin-connected to the core pillar 14 in the same manner.

In this embodiment, the column members 24 and the beam members 26 (FIG.
3 are arranged at intervals larger than the width of the suspension member 20 as shown in FIG.
The pillars 24a, 24a and the beams 26a, 26a form a double structure. Then, the suspension member 20 is connected to the column members 24a, 24a and the beam members 2a.
It is designed to be inserted into the middle part of 6a, 26a.

The suspension unit 20a of the suspension member 20 is connected to a pin 22 at an upper portion of a column member 24 disposed below.
, A connecting member 28 is attached rotatably at the same time. On the other hand, a mounting bracket 30 is fixed to a lower portion of the pin 22 above the beam member 26 connected to the upper end of the column member 24, and the connecting member 28 is rotatably mounted on the mounting bracket 30. 32 are combined. Thus, the pillar 24
Is suspended by the suspension member 20, the buckling of the column member 24 can be prevented by using the axial force acting on the column member 24 as a tension, so that the cross-sectional area of the column member 24 is reduced. I can do it.

The lower end of the column member 24 suspended from the suspension member 20 is terminated at a predetermined height h from the ground G, and a large space S having a predetermined height h can be formed on the ground.

With the above-described structure, in the multi-layer suspension structure 10 of the present embodiment, the column member 24 and the beam member 26 of the layer where the suspension member 20 is disposed are replaced with the two column members 24.
a, 24a and the beam members 26a, 26a to form a double structure, and the suspension member 20 is inserted into an intermediate portion between the pillar members 24a, 24a and the beam members 26a, 26a. The contact with the column member 24 and the beam member 26 can be prevented.

Therefore, since the main body of the suspension member 20 is not rigidly connected to the column member 24 and the beam member 26, the suspension member 20 is not suitable for the frame portion composed of the column member 24 and the beam member 26 due to structural strength. It does not affect in a clear manner, and the strength calculation of this skeleton can be performed relatively easily. For this reason, the preparation period at the design stage is significantly reduced, and the period from the ordering of the building 12 to completion can be shortened.

[0016]

As described above, in the multi-layer suspension structure according to the present invention, the column and the beam at the portion where the suspension material is arranged are formed as a double structure with an appropriate interval.
Since the suspension material is inserted and pin-connected between the pillar and the beam having the double structure, the suspension material can be arranged without being rigidly connected to the pillar and the beam. Does not affect the framing part composed of. Therefore, the strength calculation of the skeleton part can be performed relatively easily and accurately, and furthermore, there is an excellent effect that the period from ordering to completion of the building can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing the overall structure of a building using a multi-layer suspension structure of the present invention.

FIG. 2 is an enlarged front view of a main part of a building using the present invention.

FIG. 3 is an enlarged side view of a main part of a building using the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Multilayer suspension structure 12 Building 14 Core pillar 18 Truss girders 20 Suspension material 24 Column material 24a Double structure column material 26 Beam material 26a Double structure beam material 28 Connecting material G Ground

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideaki Yamaoka 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Kanji Nagata 2-3-3 Kandajicho, Chiyoda-ku, Tokyo Shares Obayashi Corporation Tokyo headquarters (72) Inventor Kenichi Kaminaga 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo headquarters (72) Inventor Shingo 2- 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office (58) Fields surveyed (Int. Cl. ⁷ , DB name) E04B 1/34

Claims (1)

(57) [Claims] 1. A pair of core pillars are erected, and a suspension material is erected in such a manner as to extend downwardly between the core pillars.
This suspension material is a multi-layered suspension structure in which a pillar material constituting a building is suspended, and a column and a beam in a portion where the suspension material is arranged are formed in a double structure in which an appropriate gap is provided. A suspension structure in which a suspension material is inserted between the pillar and the beam, and an appropriate portion of the suspension material is pin-connected to the pillar material via a connecting material.