JPH0893265A - Building skeleton structure - Google Patents

Abstract

PURPOSE: To improve earthquake resisting performance by integrating sub-frames of approximately ladder shape formed of low yield material, into a main frame formed on columns and beams to construct the skeleton of a multistory building, and absorbing vibrational energy by the sub-frames. CONSTITUTION: Spandrel walls 6, 7 made of reinforced concrete (RC) and fitted to vertical beams 3 laid between columns 2a are integrally connected by sub- frames 5 formed of low yield strength material into approximately ladder shape, through steel plates 8 and stud bolts 9. When a skeleton is horizontally vibrated by an earthquake or the like, the vertical member 12 of the sub-frame 5 acts as a steel damper and yield-deformed earlier than the other members to absorb vibrational energy. In the case of buckling, only the sub-frame 5 is replaced and recovered in an early stage. The earthquake resistance of a building can thereby be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skeleton structure of a building suitable for improving the seismic resistance of a building such as a high-rise building.

[0002]

2. Description of the Related Art Conventionally, in order to improve the seismic resistance of a building such as a reinforced concrete structure, a steel frame reinforced concrete structure, or a high-rise building made of a steel frame structure, a reinforced concrete structure that is continuous in the vertical direction is formed on the frame of the building. A bearing wall was formed, and brace materials were installed between the pillar and beam steel frames.

[0003]

However, the following problems exist in the conventional frame structure of a building as described above. First, when a reinforced concrete bearing wall is formed, there is a problem that the toughness of the bearing wall itself is remarkably lower than that of other members such as a column steel frame and a beam steel frame forming a skeleton. Further, when a bending stress acts on the load bearing wall when an earthquake occurs, yielding due to the bending stress concentrates on the upper end portion and the lower end portion of the load bearing wall, resulting in a problem of reducing the energy absorption capacity. . On the other hand, the brace material has a problem that the structure exhibits brittle fracture characteristics when the compression brace buckles, and in addition to this, it is difficult to adjust the rigidity balance of the structure by installing the brace. is there. The present invention has been made in consideration of the above points, and an object of the present invention is to provide a frame structure of a building having excellent seismic resistance.

[0004]

The invention according to claim 1 is
A frame structure of a building, wherein the frame is composed of a main frame composed of columns and beams, and a sub frame interposed between the beams positioned above and below each other, and the sub frame is
It is characterized in that horizontal members arranged vertically and extending in the horizontal direction respectively, and a plurality of vertical members extending in the vertical direction are assembled in a substantially ladder shape.

According to a second aspect of the present invention, in the frame structure of a building according to the first aspect, each of the beams is provided between the sub-frame and beams located above and below the sub-frame. It is characterized in that a wall body having a predetermined height that is integrated with is formed.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the frame structure of the building described above, the vertical member of the sub-frame is configured to penetrate vertically in the sub-frame.

The invention according to claim 4 relates to claims 1 to 3.
In the frame structure of a building according to any one of the above 1 to 3, the vertical member of the sub frame is made of a low yield material having a lower yield strength than a member constituting the main frame.

[0008]

According to the invention described in claim 1, the skeleton is composed of a main frame composed of columns and beams, and a sub frame interposed between beams positioned above and below each other, and the sub frames are substantially ladder-shaped. It is composed of a horizontal member and a vertical member. As a result, the beams located above and below each other in each layer of the main frame are joined together via the sub frame, and the frame has a high yield strength. Moreover, if the sub-frame is made of, for example, H-shaped steel, the sub-frame has high toughness as compared with the conventional RC bearing wall or brace material.

According to the second aspect of the present invention, a wall body having a constant height is formed between the sub-frame and the beams positioned above and below the sub-frame. As a result, the vertical dimension of the sub frame can be suppressed, and as a result, the rigidity of the sub frame with respect to horizontal displacement can be increased.

According to the third aspect of the invention, the vertical member of the sub-frame is configured to pass through the sub-frame above and below. As a result, the vertical members come into contact with the upper and lower beams or walls, and when this frame vibrates in the horizontal direction due to an earthquake or the like, the vertical members act as steel dampers, so to speak, and vibrate. It becomes possible to absorb energy and use it as a damping element.

According to the fourth aspect of the present invention, the vertical member of the sub frame is made of a low yield material having a lower yield strength than the members constituting the main frame. As a result, when vibration occurs in the building, the stress caused by the vibration energy concentrates on the low yield material, and the low yield material buckles early. Therefore, the main frame of the frame can be prevented from being damaged. Moreover, repair can be easily performed by replacing only the buckled member.

[0012]

The present invention will be described below with reference to the first to fifth embodiments shown in the drawings. [First Embodiment] First, for example, a skeleton structure of a building of the present invention is reinforced concrete construction (hereinafter referred to as "RC construction").
This will be described using an example of applying it to a high-rise building. Figure 1
(A) And (b) shows a part of building (building) 1 built by applying the frame structure of the building which concerns on this invention. The building 1 mainly comprises a main frame 4 of a rigid frame structure composed of RC columns 2 and beams 3, and sub-frames 5, 5, ... Are incorporated in predetermined positions of the main frame 4 as follows. It has been configured.

The upper and lower surfaces of each beam 3 erected between the four columns 2a, 2a, ... Located in the central portion of the main frame 4 in plan view, for example, have a waist wall made of RC having a constant height. (Wall)
6, 7 are integrally formed. As a result, between the columns 2a, 2a of the main frame 4, the waist wall 7 is formed above and the waist wall 6 is formed below each layer that is vertically divided by the beam 3. On the upper end surface of the waist wall 6 and the lower end surface of the waist wall 7, a stud bolt 9 (see FIG. 1 (b)) integrally formed with a steel plate 8 is provided.
It is provided by being embedded in 7.

The sub-frame 5 has the waist wall 6,
It is installed between 7. The sub frame 5 includes a pair of horizontal members 10 and 11 extending in the horizontal direction and the horizontal members 1
Vertical member 12, 1 extending in the vertical direction between 0 and 11
2 and ... are integrated by welding and assembled into a substantially ladder shape in a side view. The horizontal members 10 and 11 and the vertical member 12 are each made of a steel material having an H-shaped cross section. Further, each vertical member 12 is vertically divided into two parts at its central portion, and at its joint portion, it is bolted via joint plates 14 and 15. As a result, the sub frame 5 has a structure that can be divided into an upper unit 5a and a lower unit 5b. In the sub-frame 5, the horizontal members 10 and 11 are respectively attached to the waist wall 6 and
The plate 8 of No. 7 is joined to the main frame 4 by bolting, respectively, so as to be integrated with the main frame 4.

In this way, the beam 3, waist wall 6, is provided between the columns 2a, 2a adjacent to each other in the central portion of the building 1.
7, the sub frame 5 is vertically continuous in the vertical plane located at the same position in plan view, that is, the building 1 has a pillar 2a, a beam 3, and a waist wall at the center thereof. This means that a tubular frame body 17 composed of 6, 7 and the sub frame 5 and having a rectangular shape in plan view and having an axis line in the vertical direction is configured.

Next, a method for constructing the skeleton of the building 1 having the above-mentioned structure will be described. First, the pillars 2, 2, ...
Are erected at predetermined positions, and beams 3, 3, ... Are erected between these columns 2, 2 ,.

Then, a reinforcing bar and a formwork (not shown) are assembled on the upper and lower surfaces of each beam 3 which is installed between the pillars 2a located in the central portion, and concrete is placed here to form the waist wall 6,
Form 7.

After the construction of the main frame 4 and the waist walls 6 and 7 is completed as described above, the sub frame 5 is formed in each layer.
Is installed. At this time, the sub frame 5 is divided into upper and lower parts, and first, the upper unit 5a is fixed to the upper waist wall 7 and the lower unit 5b is fixed to the lower waist wall 6. After that, the sub-frames 5 are integrated by bolting each vertical member 12 via the joining plates 14 and 15. In this way, by incorporating a predetermined number of sub-frames 5 into the main frame 4, the construction of the frame of the building 1 including the main frame 4 and the sub-frames 5 is completed.

In the skeleton structure of the building 1 described above, this skeleton is interposed between the main frame 4 composed of the pillars 2 and the beams 3 and the beams 3 and 3 arranged at the same position in plan view. Frame 5
The sub-frame 5 is composed of horizontal members 10, 11 and vertical members 12, 12, ... Which are assembled in a substantially ladder shape. As a result, in the center of the building 1, there is a frame structure 17 that has high rigidity and is continuous in the vertical direction.
Thus, the frame structure 17 can be made to act as a seismic resistant element to enhance the proof stress of the building 1 and provide excellent seismic proof performance. Moreover, sub frame 5
Since it is made of H-shaped steel, it has higher yield strength compared to the conventional RC bearing walls and brace materials made of steel bars.
Since it has high toughness, the seismic performance of the building 1 can be further improved.

In each layer, between the sub-frame 5 and the beams 3 and 3 located above and below the sub-frame 5, the waist wall 6 is formed, respectively.
7 is formed. As a result, the vertical dimension of the sub-frame structure 5 can be suppressed, and the proof stress against horizontal displacement of the building 1 can be increased, which also improves the seismic performance of the building 1.

Further, since the sub-frame 5 is installed after the main frame 4 is constructed, no vertical axial force acts on the sub-frame 5 under normal conditions. This allows the sub-frame 5 to be repeatedly loaded.
The history loop showing the restoring force characteristic of can be made stable.

In addition, the sub-frame 5 is constructed so that it can be vertically divided into two parts, and when the sub-frame 5 is installed on the main frame 4, it is divided into an upper unit 5a and a lower unit 5b, each of which is a main unit. After being fixed to the frame 4, the upper unit 5a and the lower unit 5b are joined together.
As a result, when joining the upper unit 5a and the lower unit 5b, it is possible to absorb the construction error of the main frame 4 and facilitate the construction of the main frame 4, and the sub frame 5 itself. Also, there is an advantage that no stress is generated.

In the first embodiment described above, the horizontal members 10 and 11 constituting the sub-frame 5 and the vertical members 12 are joined by welding, but of course, as shown in FIG. Anchor plates 18 may be attached to both ends of 12 and the anchor plates 18 may be bolted to the flange portions of the horizontal members 10 and 11. With such a configuration, if the sub frame 5 yields and is deformed in the event of an earthquake, the vertical member 12 can be easily replaced.

[Second Embodiment] Next, the frame structure of the building of the present invention will be described, for example, in a steel frame reinforced concrete structure (hereinafter, referred to as "S
It will be described using an example in the case of being applied to a high-rise building (referred to as “RC construction”). 3 (a) and 3 (b) show a part of a building (building) 21 constructed by applying the structure structure of the building according to the present invention. The same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The building 21 has a main frame 24 having a rigid frame structure composed of SRC columns 22 and beams 23 as a main component, and sub-frames 5, 5, ... Are incorporated at predetermined positions of the main frame 24. There is.

Each beam 23 erected between the four columns 22a, 22a, ... Located in the central portion of the main frame 24 in plan view, for example.
Waist walls (walls) 26 and 27 made of SRC and having a constant height are integrally formed on the upper and lower surfaces, respectively. The waist walls 26, 27 are vertical members 29, 29, ..., which are vertically welded to the beam steel frame 23a forming the beam 23 in concrete 28 cast in a predetermined shape.
A horizontal member 30 that is welded to the tip ends of the vertical members 29, 29, and extends in the horizontal direction, and a brace 31 are embedded. A steel plate 32 is provided integrally with the horizontal member 30 on the upper end surface of the waist wall 26 and the lower end surface of the waist wall 27. In this way
Between the pillars 22a, 22a of the main frame 24, in each layer,
A waist wall 27 is formed above the waist wall 26 and a waist wall 26 is formed below the waist wall 26, and the sub frame 5 is provided between them. As a result, the building 21 has a pillar 2 at the center thereof.
2a, beam 23, waist wall 26, 27, sub-frame 5,
A substantially cylindrical frame structure 33 having an axis in the vertical direction is configured.

When constructing such a building 21, the main frame 24 is constructed and the waist walls 26 and 27 are formed in each layer, and then the sub frame 5 is constructed, as in the first embodiment.
Is divided into an upper unit 5a and a lower unit 5b and inserted between the waist walls 26 and 27, and then these are integrally joined.

In the frame structure of the building 21 described above, the SRC
Even in the frame of the building 21, the same effect as the first embodiment can be obtained, and the pillar 22a, the beam 23, the waist walls 26, 27, and the sub frame 5 formed in the central portion of the building 21. It is possible to make the building 21 have excellent seismic resistance performance by causing the frame structure 33 having a rectangular shape in a plan view and having a cylindrical shape to act as an earthquake resistance element.

In the second embodiment, the waist wall 2
Although 6 and 27 are made of SRC, they may be made of RC.

[Third Embodiment] Next, the structure of the skeleton of the building of the present invention will be described with reference to an example in which it is applied to a high-rise building having a steel frame structure (hereinafter referred to as "S structure"). Figure 4
(A) And (b) shows a part of building (building) 41 constructed by applying the structure structure of the building according to the present invention. The same components as those in the first and second embodiments are designated by the same reference numerals and the description thereof will be omitted. The building 41 has a main frame 44 having a rigid frame structure composed of S-shaped columns 42 and beams 43 as a main component, and sub-frames 5, 5, ... Are incorporated in predetermined positions of the main frame 44. There is.

Each beam 43 erected between the four columns 42a, 42a, ... Located in the central portion of the main frame 44 in plan view, for example.
On the upper and lower surfaces, S-shaped frames (walls) 45 and 46 each having a constant height are integrally formed. The waist walls 45 and 46 are respectively vertical members 47, 47, ... Welded to the beam 43, a horizontal member 48 welded to the tip of the vertical member 47, and the beams 43, vertical member 47, horizontal member 48. And a steel plate or a brace 49 disposed between and. In this way, the pillar 4 of the main frame 44
Between 2a and 42a, the waist wall 4 is formed above each layer.
6, the waist wall 45 is formed below, and the sub-frame 5 is provided between them. As a result, in the building 41, the pillar 42a, the beam 43,
A substantially tubular frame structure 50 having an axis line in the up-down direction and including the waist walls 45 and 46 and the sub frame 5 is configured.

When constructing such a building 41, as in the first embodiment, the main frame 44 is constructed, the waist walls 45 and 46 are formed in each layer, and then the sub frame 5 is formed.
Is divided into an upper unit 5a and a lower unit 5b, inserted and attached between the waist walls 45 and 46, and then these are integrally joined.

Even in the above-mentioned frame of the building 41 of the building S, the same effect as that of the first embodiment can be obtained, and the pillars 42a and the beams 4 formed in the central portion of the building 41.
The substantially tubular frame structure 50 including the three waist walls 45 and 46 and the sub frame 5 can be made to act as a seismic element to make the building 41 have excellent seismic performance.

[Fourth Embodiment] Next, the structure of the building structure of the present invention will be described with reference to an example in which it is applied to a high-rise building made of RC, for example, and the sub-frame is used as a damping element. Figure 5
(A) And (b) shows a part of building (building) 51 constructed by applying the frame structure of the building according to the present invention. Here, the difference between this building 51 and the building 1 shown in the first embodiment is only the configuration of the sub-frame 52, and the other configurations are exactly the same. Only the common components will be described with the same reference numerals and the description thereof will be omitted. Building 51 is made of RC columns 2
A main frame 4 having a rigid frame structure composed of a beam and a beam 3 is mainly configured. Then, between the four columns 2a, 2a located in the central portion of the main frame 4 in plan view, for example, the waist walls 6, 7 made of RC are formed in the layers vertically divided by the beams 3. A sub frame 52 is incorporated between the waist walls 6 and 7.

The sub-frame 52 has vertical members 53, 53, ..., Which extend in the vertical direction at predetermined intervals, and a horizontal member 54 which is installed between the upper and lower ends of the vertical members 53, 53 adjacent to each other. , 54, ... Are integrated by welding to form a substantially ladder shape in a side view.
That is, in the sub-frame 5 of the first embodiment (see FIG. 1), the horizontal member 10 was pierced in the horizontal direction, whereas in the sub-frame 52, fatigue fracture due to repetition was taken into consideration. The vertical member 53 is vertically penetrated. Each vertical member 53 is vertically divided into two parts at its central portion, whereby the sub frame 52 is divided.
Has a configuration that can be divided into an upper unit 52a and a lower unit 52b. And the upper unit 52
a and the lower unit 52b are joined plates 14 and 15
It is bolted through.

The vertical members 53 are made of low-yield steel having a lower yield strength than other members such as the main frame 4 and the waist walls 6 and 7.

The sub-frame 52 is composed of the upper and lower horizontal members 5
The bolts 4 and 54 are joined to the plates 8 of the waist walls 6 and 7, respectively, to be integrated with the main frame 4.

In this way, the beam 3, the waist walls 6, 7, and the sub frame 52 are vertically continuous between the adjacent columns 2a, 2a in the center of the building 51. As a result, the building 51 has a substantially cylindrical frame structure 55 including the pillars 2a, the beams 3, the waist walls 6, 7, and the sub frame 52 in the center thereof.
Has been configured. In the building 51 having such a structure, when an earthquake occurs, the vertical member 53 of each sub-frame 52 acts as a so-called steel damper, and the bending energy of the vertical member 53 absorbs vibration energy.

The method of constructing the frame of the building 51 having the above construction is exactly the same as that of the first embodiment, and after constructing the main frame 4 and forming the waist walls 6 and 7 in each layer, the sub frame 52 is formed.
Is divided into an upper unit 52a and a lower unit 52b, which are inserted between the waist walls 6 and 7 to join them.

With the frame structure of the building 51 described above, the same effect as that of the first embodiment can be obtained. Further, since the vertical member 53 of the sub-frame 52 is vertically penetrated, when the earthquake occurs, the vertical member 53 is
The building 51 can be made to have a damping function by acting as a damping element that absorbs vibration energy by bending yielding. Furthermore, since the vertical member 53 is made of low yield steel having a lower yield strength than other members,
When excessive vibration is input to the building 51, the vertical member 53 first yields to absorb the vibration energy and prevent other members such as the main frame 4 from being affected. The added value of 51 can be increased.

[Fifth Embodiment] Next, an example in which the frame structure of the building of the present invention is applied to, for example, a high-rise building of S structure and the sub frame is installed only in the central portion of the beam is used. explain. FIGS. 6A and 6B show a part of a building (building) 61 constructed by applying the frame structure of the building according to the present invention. Here, the only difference between this building 61 and the building 41 of S structure shown in the third embodiment (see FIG. 4) is the configuration of the sub-frame 62, and the other configurations are the same. Therefore, only the differences will be explained,
The common components are given the same reference numerals and the description thereof is omitted.
The building 61 mainly comprises a main frame 44 of a rigid frame structure composed of S-shaped columns 42 and beams 43, and a sub frame 62, 43 between the beams 43, 43 located above and below each other of the main frame 44.
62, ... Are incorporated.

Each sub-frame 62 has a column 42 adjacent to each other.
It is installed in the central part between a and 42a. Sub frame 62
Are mounting members 6 extending along the beams 43, 43, respectively.
3, 63 and vertical members 64, 64, 6 made of H-shaped steel extending in the vertical direction between the mounting members 63, 63.
4, horizontal members 65, 65 made of H-shaped steel extending in a direction orthogonal to the horizontal members 4, the mounting members 63, and the vertical members 6
4, brace members 66, 6 installed between horizontal members 65
It consists of 6, ... In addition, each vertical member 64
Is divided into two parts at the central portion in the lengthwise direction and bolted by a joining plate (not shown), whereby the sub-frame structure 62 can be vertically divided into two parts.

In such a sub-frame 62, the sub-frame 5 (see FIG. 4) shown in the third embodiment has columns 42a, 42a.
While it was installed over almost the entire space between the columns 42
It is configured to be installed only in the central portion between a and 42a. Therefore, the proof strength and rigidity of the beam 43 are set so that the beam 43 will not be deformed as shown in FIG. 7 when the building 61 is horizontally displaced due to an earthquake or the like.

The sub frame 62 has an upper portion 62a and a lower portion 6a.
The brace material 66 allows the rigidity of 2b to be increased by the intermediate portion 62c.
It is configured to be higher than that of No. 1, so that when horizontal displacement occurs in the building 1 due to an earthquake or the like, the vertical members 64 yield at the portions indicated by reference numeral (a) in the figure. There is.

In constructing such a building 61, after constructing the main frame 44, the sub frame 62 is attached to the beams 43, 43 in a state where the sub frame 62 is divided into upper and lower parts, respectively.
Then, the upper and lower parts may be joined together.

In the frame structure of the building 61 described above, this frame is composed of the main frame 44 and the sub frame 62 interposed between the beams 43 and 43. As a result, the building 61
In the center of the building, a frame structure 67 that is continuous in the vertical direction is formed, and this frame structure 67 acts as a seismic element, so to speak, a big black pillar, to increase the proof strength of the building 61 and to provide excellent seismic performance. It can be Moreover, since the sub frame 62 is made of H-shaped steel, the conventional R
Compared with a C-shaped bearing wall, a brace material made of steel, and the like, it has high strength and high toughness, so that the seismic performance of the building 61 can be improved.

Since the sub frame 62 is installed after the main frame 44 is constructed, the sub frame 62 is
Under normal conditions, no vertical axial force acts. As a result, the history loop showing the restoring force characteristic of the sub frame 62 due to the repeated loading can be made stable.

Further, the sub-frame 62 is constructed so as to be vertically separable into two parts. When the sub-frame 62 is installed on the main frame 44, it is divided into two parts up and down, and each of the sub-frames 4 is divided into four parts.
After being fixed to No. 4, they were joined to each other. Thereby, the construction error of the main frame 44 can be absorbed by the joint portion of the sub frame 62, the construction of the main frame 44 can be facilitated, and the sub frame 62 itself is not stressed. The advantage can be played.

In the above first to fifth embodiments,
Sub-frames 5, 52, 62 are replaced by buildings 1, 21, 41, 5
Although it is configured to be installed from the upper end to the lower end of 1, 61, of course, this may be installed only at the lower end.

Further, although the vertical members 12, 53, 64 constituting the sub-frames 5, 52, 62 have the same length, size, etc., they may not be the same. The relationship between the horizontal displacement and the yield load when the length, size and yield strength of the vertical member are changed will be shown below.

For example, as shown in FIG. 8A, the height h of the vertical member 74 of the sub frame 73 installed between the waist walls 72 and 72 is set to 1 with the gap between the upper and lower beams 71, 71 being constant. ．
The relationship between the horizontal displacement δ and the yield load Q is shown in FIG.
As shown in. Here, the vertical member 74 has an SM49
A 0 A H steel material having a size of H-400 × 200 × 8 × 13 mm was used.

Further, as shown in FIG. 9A, the size of the vertical member 74 is, for example, H-350 × 175 × 7 ×.
11 mm, H-446 x 199 x 8 x 12 mm, H
The relationship between the horizontal displacement δ and the yield load Q is shown in Fig. 9 when changing in three ways of -600x200x11x17mm.
As shown in (b). Further, when the three kinds of vertical members 74 are combined, a symbol (B) in the drawing is obtained.

Further, as shown in FIG. 10A, when the size and length of the vertical member 74 are changed and combined, the relationship between the horizontal displacement δ and the yield load Q is shown in FIG.
As shown in (b). Each vertical member 74 used here
Size and length is H-350 × 175 × 7 × 11m
m, length 2.0 m, H-446 × 199 × 8 × 12 m
m, 1.5m, H-600 × 200 × 11 × 17m
m and 1.0 m.

In addition, in the model shown in FIG. 9A, when a low yield steel having a yield strength σn = 2.5 t / cm ² is used for the vertical member 74 having a size of H-600 × 200 × 11 × 17 mm. The relationship between the horizontal displacement δ and the yield load Q is as shown in FIG.

As described above, by changing the size, length, or yield strength of the vertical member 74, desired restoration characteristics can be easily obtained.

[0055]

As described above, according to the skeleton structure of a building according to claim 1, the skeleton has a main frame composed of columns and beams, and a sub-frame structure interposed between beams located above and below each other. The sub-frame is constructed by assembling a horizontal member and a vertical member in a substantially ladder shape. As a result, the beam of the main frame and the sub frame will be formed continuously in the vertical direction on the frame, and this will act as a seismic element, so to speak, a large black pillar, to enhance the yield strength of the building It can have seismic resistance. In addition, if the frame members that make up the sub-frame are made of H-shaped steel, conventional RC
Compared to the structural bearing wall and the brace material made of steel,
The sub-frame structure can have high strength and high toughness, and this can also improve the seismic performance of the building.

According to the skeleton structure of a building according to claim 2, a wall body having a constant height is formed between the sub-frame and the beams located above and below the sub-frame. As a result, the vertical dimension of the sub-frame can be suppressed and the proof strength against horizontal displacement of the building can be increased, which also improves the seismic performance of the building.

According to the skeleton structure of a building according to claim 3, the vertical member of the sub-frame is configured to penetrate above and below the sub-frame. As a result, the vertical members come into contact with the upper and lower beams or walls, and when the frame vibrates in the horizontal direction due to an earthquake or the like, each of the vertical members acts as a damping element that absorbs vibration energy by bending yield. By this, the building can be made to have a damping function.

According to the skeleton structure of a building of claim 4, the vertical member of the sub frame is made of a low yield material having a lower yield strength than the members constituting the main frame. As a result, when vibration occurs in the building, the stress caused by the vibration energy is concentrated in the low-yield material and buckles early, which absorbs the vibration energy and affects other members such as the main frame. Can be prevented, which can increase the added value of the building. Moreover, since the original state can be restored by replacing only the buckled sub frame, the repair can be easily performed.

[Brief description of drawings]

1A and 1B are (a) an elevation view and (b) a side sectional view showing a first embodiment of a building structure of a building according to the present invention and showing a part of a building of an RC building.

FIG. 2 is an elevation view showing another example of the sub-frame provided on the skeleton.

3A and 3B are a second embodiment of a building structure of a building according to the present invention, and FIG. 3A is an elevation view and FIG. 3B is a side sectional view showing a part of a building structure of an SRC building.

FIG. 4 is a third embodiment of the skeleton structure of a building according to the present invention, showing a part of the skeleton of an S building (a) an elevation view;
It is a side sectional view of (b).

FIG. 5 is an elevation view showing a fourth embodiment of the structure of the building according to the present invention and showing a part of the structure of the RC building.

FIG. 6 is an elevational view showing a fifth embodiment of the structure of the building according to the present invention and showing a part of the structure of the S building.

FIG. 7 is a deformation model diagram of the building body shown in FIG.

FIG. 8 is a diagram showing a relationship between a horizontal displacement and a yield load when the height of a vertical member that constitutes a sub-frame is changed in the frame structure of the building according to the present invention.

FIG. 9 is a diagram showing a relationship between a horizontal displacement and a yield load when the size of a vertical member that constitutes a sub-frame is changed in the frame structure of the building according to the present invention.

FIG. 10 is a diagram showing the relationship between horizontal displacement and yield load when the height and size of the vertical members constituting the sub-frame are changed in the building frame structure according to the present invention.

FIG. 11 is a diagram showing the relationship between horizontal displacement and yield load when low-yield steel is used for the vertical members constituting the sub-frame in the building frame structure according to the present invention.

[Explanation of symbols]

 1,21,41,51,61 Building (building) 2,22,42 Pillar 3,23,43 Beam 4,24,44 Main frame 5,52,62 Sub frame 6,7,26,27, waist wall (Wall body) 10, 11, 54, 65 Horizontal member 12, 53, 64 Vertical member 45, 46 Frame (Wall body)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location E04B 2/56 605 F 6951-2E 611 B 6951-2E D 6951-2E 621 A 6951-2E W 6951 -2E 632 B 6951-2E C 6951-2E 643 A 6951-2E 2/84 F H

Claims (4)

[Claims] 1. A skeleton structure of a building, wherein the skeleton is composed of a main frame composed of columns and beams, and sub-frames interposed between the beams positioned above and below each other, and
The building is characterized in that the sub-frame is constructed by vertically arranging horizontal members respectively extending horizontally and a plurality of vertical members vertically extending so as to form a substantially ladder shape. Body structure. 2. The frame structure of a building according to claim 1, wherein the sub-frames and the beams located above and below the sub-frames are integrally formed with each of the beams. The structure of the building is characterized by the formation of walls with high height. 3. The building structure of a building according to claim 1, wherein the vertical member of the sub-frame is formed so as to penetrate vertically in the sub-frame. Construction. 4. The building frame structure according to claim 1, wherein the vertical member of the sub-frame is
A skeleton structure of a building, comprising a low yield material having a yield strength lower than that of a member constituting the main frame.