JP3473863B2 - Building frame 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 frame structure of a building having a high floor height relative to a building area.

[0002]

2. Description of the Related Art In the structural planning of a high-rise building with a high floor height relative to the building area, that is, a building with a large slenderness ratio, the pillars are concentrated in the center to form a core and the outer periphery of the building. The outer pillars are arranged in and the seismic wall is installed between the core pillar and the outer pillar. In such a structural plan, the pillars concentrated in the core bear most of the vertical load, and the outer pillars arranged on the outer periphery of the building bend the whole building caused by the horizontal force due to seismic force and wind force. The outer column mainly bears the stress as an axial force.

Therefore, a large compressive force or tensile force is generated in the outer column. And since a large pulling force is applied to the outer pillar with a small weight burden, as a measure to prevent the fall of the building,
Special consideration should be given to the outer columns on the outer circumference of the building, or the lower part of the building should be enlarged in plan to support the weight over a wide area. For example, as a measure to prevent the fall of a building, the lower part of the building should be made large in size so that the function of the weight can be exerted, or the foundation is enlarged so that the weight is hung on the foundation under the outer column of the outer circumference. It exerts the function of a weight and piles up large-diameter weight piles to counter the pull-out force.

[0004]

In order to make the lower part of the building large in plan, the plan on the site to be built is restricted and the shapes of the foundation and piles are enlarged more than necessary. There is a problem that the cost is not high and the construction cost is high. The present invention is proposed in view of the problems of the above-mentioned conventional technology, and an object thereof is to provide a core pillar in the center of a building with a horizontal shearing force in a structural plan of a building with a large slenderness ratio. However, due to the flexibility of the building site and economic design, the vertical load is designed so that the axial force is transferred to the outer column of the outer peripheral part through the highly rigid bearing wall to resist the pulling force. The point is to provide a frame structure for buildings that does not raise construction costs.

[0005]

In order to achieve the above-mentioned object, the frame structure of the building according to the present invention has an intermediate floor and
It has an upper floor above the floor and a lower floor below the middle floor.
And extend through the upper floor, the middle floor, and the lower floor.
In the frame structure of the building that has the middle pillar and the outer pillar, the middle pillar
There is a joint between the middle floor and the lower floor of the bridge, and the middle section of the middle pillar and the middle of the outer pillar are provided.
A high-strength load-bearing wall that enables load transfer between them is provided between the floors, and the upper and middle floors of the middle pillar are
A vertical load is applied to the middle floor of the outer column through the bearing wall.
It is configured to be transmitted to.

According to a second aspect of the present invention, the joint portion is disposed on a floor directly below the intermediate floor, a tenon is provided on a pillar head of the floor directly below, and a height adjusting bolt is provided. A through hole for fitting the tenon is provided in the lower part of the middle pillar of the intermediate floor. According to the invention of claim 3, the damping mechanism is attached to the tenon top that penetrates the bottom of the middle pillar of the intermediate floor.

[0007]

Since the present invention is constructed as described above, water
That by the building the entire bending of that caused by the Tairaryoku pull-out force of the outer columns is suppressed.

According to the second aspect of the present invention, the joint for interrupting the transmission of the vertical load to the lower floor pillar of the middle pillar provided directly below the middle pillar of the middle floor is such that Since the tenon and the height adjustment bolt are provided, when building the pillar, the height adjustment bolt is used to adjust the height with the pillar on the upper floor to adjust the height of the pillar on the upper floor After constructing the upper floor, insert it according to the tenon of the head and loosen the height adjustment bolts to form a gap between the middle pillar of the middle floor and the middle pillar of the floor directly below Structurally insulating the space between the pillars of the upper floor and the bridge of the lower floor so that the load of the upper floor is not applied to the high-rigidity earthquake-resistant wall between the middle pillar and the outer pillar of the middle floor. It is transmitted and transferred to the outer pillar.

The tenon resists horizontal shearing force caused by an earthquake or wind force, and is transmitted to the middle pillar of the directly lower floor pillar as in the conventional case. According to the invention of claim 3, in the damping mechanism provided on the tenon top that penetrates the lower part of the middle pillar of the intermediate floor, a gap is created between the pillar of the intermediate floor and the pillar directly below in the joint portion, and the upper and lower parts are structurally structured. Since the intermediate floor is vertically moved at the joint, the vibration of the vertical movement is controlled by the damper effect of the damping mechanism.

[0010]

The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, A is composed of a steel column a and a steel beam c,
It is a high-rise steel-framed building with a high floor height relative to the building area, that is, the frame of a steel-framed building with a large slenderness ratio . As shown,
This steel-framed building is located on the intermediate floor N and above this intermediate floor N.
On the upper floors and below the middle floor N below
With the floor. The pillar is a middle pillar b arranged close to the center.
1 and an outer column b2 arranged on the outer periphery, and an inner column b1
A bearing wall d having high rigidity is provided between the outer column b2 and the outer column b2. As shown in the figure, the middle pillar b1 and the outer pillar 2 are the upper floor and the middle floor.
It extends through N and the lower floor.

The intermediate floor portion of the center pillar b1 provided in the center of the plane A of the building frame A of the above structure
The joint portion is provided P, the vertical load <br/> heavy M the high rigidity bearing wall d across the upper floor portion and the intermediate floor portions of the center post b1 to block the vertical load between the Shitakai portion Through the middle of the outer pillar b2
And so as to transmit to the floor portion, thereby to so pull disconnect force acting on the outer column b2 is suppressed. The joint portion P for blocking the vertical load, which is applied to the upper floor portion and the middle floor portion of the middle pillar b1 described above, is provided at a position indicated by a circle in the middle pillar of the middle floor N shown in FIG.

In the figure, F is the foundation and G is the ground. As shown in FIG. 4, the joint part P has a tenon 3 projecting upward from the head 2 of the middle pillar 1 of the intermediate floor of the building A of the building and surrounding the tenon 3 as shown in FIG. The four adjusting bolts 4 are screwed upward from below, and the through hole 6 through which the tenon 3 penetrates is formed in the bottom portion 5 of the middle pillar 1'of the upper floor of the middle pillar 1. There is.

In order to build the middle floor N of the building, the adjusting bolt 4 provided on the head 2 of the middle pillar 1 directly below the middle floor is set in advance to the building level of the middle pillar 1'of the middle floor. The tenon 3 of the head of the middle pillar 1 is fitted into the through hole 6 of the middle pillar 1'to build the middle pillar. (Refer to FIG. 2) After the building of the upper floor of the building frame A of the building is completed, the adjusting bolt 4 is loosened to form a gap e between the middle pillar 1 and the middle pillar 1 ′ on the middle floor. The transmission of the vertical load on the middle pillar 1 to the middle pillar 1'is blocked, and the middle pillars 1 and 1'are structurally blocked.

Therefore, the axial force (vertical load) M applied to the upper floor portion and the middle floor portion of the middle pillar b1 is transmitted to the middle floor portion of the outer pillar b2 through the bearing wall d having high rigidity. ,From there
Furthermore, it is transmitted to the lower floor of the outer pillar b2 (see Fig. 1).
Irradiation), it stresses before force acting on the outer column can be suppressed. 5 and 6 show another embodiment of the joint portion P of the middle pillars 1 and 1'in the present invention, wherein each middle pillar is made of H-shaped steel, and the tenon 3
Are arranged at two positions with the H-shaped steel web in the lower middle pillar 1 interposed therebetween, and therefore the through holes 6 of the upper middle pillar are also provided at two positions.

7 and 8 show an embodiment of the present invention having a damping mechanism, in which the middle pillar of the building directly below, which penetrates through the through hole 6 in the bottom of the middle pillar 1'of the building. A damping material 8 composed of a lead damper is provided on the inner peripheral top of a cylindrical body 7 which is erected concentrically with the tenon 3 of No. 1 and is installed between the upper and lower partition plates 9 and 10, and the tenon 11 and the bolt 12 are used to form the tenon. When the intermediate floor is vertically moved at the joint P between the upper and lower middle columns 1 and 1 ', the vibration energy absorption effect due to the elastoplasticity of lead is exerted and the vertical movement vibration is suppressed. To do.

FIG. 9 shows another embodiment of the present invention, in which a horizontal plate 13 is projectingly provided on the inner periphery of the center pillar 1'of the building, and a leaf spring is provided between the horizontal plate 13 and the tenon 3. 14 are arranged in multiple layers and fixed to the tenon 3 via bolts 15. According to the damping mechanism shown in FIGS. 8 and 9, the vertical vibration generated in the portion between the middle columns 1 and 1 ′ of the intermediate floor is damped by the energy absorbing effect of the leaf spring 14.

[0017]

As described above, according to the present invention, in the structural plan of a building having a large slenderness ratio, the central pillar of the core portion in the middle of the building is structurally interrupted in the middle floor, and the axial force of the pillar becomes rigid. By shifting to the outer pillars on the outer periphery through a high bearing wall, the pulling force of the outer pillars due to the bending of the entire building is suppressed in the outer pillars. As a measure, without adding weight, and without enlarging the foundation so that the weight is hung on the foundation under the outer column of the outer periphery,
In addition, there is no need to drive heavy piles with a large diameter, and it is possible to avoid the freedom of the site in construction planning and the rise in construction costs due to economic design.

According to the second aspect of the present invention, the joint portion provided on the floor directly below the middle pillar of the middle floor has the joint of the middle pillar completed, and by loosening the height adjusting bolt, A high-rigidity earthquake-resistant wall provided between the middle pillar and the outer pillar of the middle floor, with a gap between the pillar and the pillar on the floor directly below to structurally insulate the space between the upper and lower floors, and the load on the upper floor will not be suspended. In addition, the weight of the upper floor is transferred to the outer pillars so that the pulling force against the foundation is suppressed and an excessively large foundation is not constructed.

Further, the tenon of the joint portion opposes the horizontal shearing force due to an earthquake or a wind force, and the load is transmitted to the middle pillar of the directly lower floor column as in the conventional case and does not become discontinuous and does not lower the yield strength. According to the invention of claim 3, the damping mechanism suppresses the vibration of the upper floors from the middle floor of the building, so that the comfortability is not impaired.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a frame structure of a building according to the present invention.

FIG. 2 is a vertical cross-sectional view of a joint portion of a center pillar.

FIG. 3 is a vertical cross-sectional view in which an upper column and a lower column are structurally interrupted by loosening bolts of the joint portion.

FIG. 4 is an exploded perspective view showing the joint portion.

FIG. 5 is a cross-sectional plan view of an upper column of the joint part showing another joint part and showing a case where the column is an H-shaped steel.

FIG. 6 is a perspective view of a head of a lower floor.

FIG. 7 is a vertical sectional view of a damping mechanism using an inner lead damper.

FIG. 8 is a plan view of the lead damper of FIG.

FIG. 9 is a vertical cross-sectional view showing a damping mechanism using a leaf spring in the embodiment for the damping mechanism.

[Explanation of symbols]

A Steel frame structure F Foundation G Ground N Intermediate floor M Axial force P Joint part a Steel column b ₁ Middle column b ₂ Perimeter column c Steel beam d Bearing wall e Gap 1 Middle column 1 ′ Middle column 2 Middle column 1 Head 3 Tenon 4 Adjusting bolt 5 Bottom part of center pillar 1'6 Through hole 7 Cylindrical body 8 Damper 9 Upper partition plate 10 Lower partition plate 11 Presser foot 12 Bolt 13 Horizontal plate 14 Leaf spring 15 Bolt

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04B 1/34-1/36 E04B 1/02 E04H 9/02 E04B 1/24 E04B 1/38

Claims (3)

(57) [Claims] 1. An intermediate floor and an upper floor above the intermediate floor,
A lower floor below the middle floor, and the upper floor and the middle floor
It has a middle pillar and an outer pillar extending through the floor and the lower floor.
In the frame structure of the building , block the vertical load between the middle floor and the lower floor of the middle pillar.
A joint part is provided, and the middle floor of the middle pillar and the outer pillar
A high-strength load-bearing wall is provided between the intermediate floor and the intermediate floor to enable the transmission of loads between them.
The vertical load of the outer column is applied to the middle floor of the outer column through the bearing wall.
A frame structure of a building characterized by being configured to be transmitted to parts . 2. The joint portion is arranged directly below the middle pillar of the intermediate floor, and the tenon of the pillar directly below is provided with a tenon, and a height adjusting bolt is provided, so that Frame structure of the building according to claim 1 Symbol placement is formed by providing a through hole for fitting engagement of the tenon in the center post lower section. 3. The frame structure of a building according to claim 2, wherein a damping mechanism is attached to a tenon top that penetrates the bottom of the middle pillar of the intermediate floor.