JPH0718879A - Expansion column and joint structure for frame expansion - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] When adding a frame to a higher floor of a building with a higher floor,
A new pillar will be added independently of the existing building, but the usage space will not be narrowed due to the increase of pillars on the lower floor. [Structure] The expansion pillar 1 is constructed so as to include the existing pillar 2 and is connected to the girder 3 by the outer diaphragm method 4 so that the load of the additional frame is not applied to the existing pillar 2.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] When adding a frame to an existing building, such as a building, which has a high floor, such as a mezzanine or a corridor,
The present invention relates to an expansion column and a joint structure which are applied to enhance structural strength.

[0002]

2. Description of the Related Art Conventionally, when a mezzanine or a corridor is added to a building or the like, a new pillar is provided near the existing pillar so that an independent frame is formed so as not to adversely affect the existing building. However, after the expansion, the number of columns will increase in the space below, making it difficult to use as a work space or living space. An example of this is shown in FIG.
Shown in (a) and (b). 4 (a) and 4 (b) are plan views showing the case where a column for additional building is newly added to the existing column.

[0003]

[Problems to be Solved by the Invention] When a mezzanine or a corridor is to be added to a building, etc.
In many cases, it is not possible to bear the load from the floor to be added or the load due to external force such as an earthquake. Therefore, new columns will be added near the existing columns to create an independent frame. in this case,
The lower floor will have more pillars and will be inconvenient to use as a work space or living space. Therefore, in order to be able to use the pillar without newly adding it, it is possible to newly install the pillar at the position of the existing pillar. The present invention constructs a new pillar so as to cover the existing pillar, joins the newly installed pillar and the newly installed beam to form an independent frame, and the load of the newly added structure is applied to the existing pillar. Providing expansion column and connection structure so as not to.

[0004]

[Means for Solving the Problems] When a frame is added to a higher floor of a building with a higher floor, a space is provided between the existing pillar and the same position as the existing pillar so as to include the existing pillar. It is possible to construct an expansion column while maintaining the above, and to effectively utilize the space on the lower floor by connecting it to the beam using the outer diaphragm method. Also, when adding a frame to a higher floor of a building with a higher floor,
A beam and an outer diaphragm method, in which the pillar is composed of four wall pillars made of reinforced concrete, maintaining a space between the existing pillar and the same position as the existing pillar so as to include the existing pillar. Even with reinforced concrete construction, the expansion columns and outer diaphragm can be joined to effectively use the space on the lower floor.

[0005]

EXAMPLE As shown in FIG. 1A, a new column 1 including the existing column 2 is provided in a state where a space is maintained between the column 2 and the existing column 2. In order to facilitate the assembly at the site, in this example, the newly-installed pillar 1 is vertically divided into two parts, and they are fastened together by a combination bolt at the site to be integrated. Figure 1 (b)
Shown in. Further, the connection structure of the girder 3 and the pillar is an outer diaphragm 4 system so that the force can be smoothly transmitted from the outside of the pillar 1 to the girder facing the pillar 1 and independently of the existing pillar 2, and is joined with a bolt. Therefore, it can be said that the present invention is a pillar to which the expansion joint is applied. The outer diaphragm 4 is also welded to the pillar member 1 at the factory in advance and brought into the site, so it is divided into two parts. However, in order to integrate the pillar 1 and the diaphragm 4 accurately, a position slightly separated from the corner portion of the pillar Then, the diaphragms 4 are bolted to each other. All of these joints can be made by welding. This invention is shown in FIG.
FIG. 3 shows a comparison with (b). Separately, the joint structure of the pillar 1 and the girder 3 is shown in FIG.

Further, expansion columns made of reinforced concrete are also possible, and the columns may be constructed as an assembly of four wall columns while maintaining a space with the existing columns.

[0007]

The effect of the present invention is that, when a new building is added to an existing building of a higher floor, the existing pillars are made into a double structure to form an expansion structure, so that a new position of the space on the lower floor can be obtained. The space can be widely used without providing additional columns.

[Brief description of drawings]

FIG. 1A is a diagram showing a relationship between an existing column and an expansion column. (B) It is a cross-sectional view of the expansion column.

FIG. 2 is a view showing a joint structure of an expansion column and a girder.

FIG. 3 is a plan view when an expansion column is used.

FIG. 4A is a diagram showing an example of a case where a conventional pillar is newly installed. (B) It is a figure which shows another example at the time of newly installing the conventional pillar.

[Explanation of symbols]

1 ... Expansion column, 2 ... Existing column, 3 ...
・ Large beams, 4 ... Outer diaphragm

Claims (2)

[Claims] 1. When a frame is added to a higher floor of a building with a higher floor, a pillar is provided at the same position as the existing pillar so as to include the existing pillar, with a space between the pillar and the existing pillar. Build
Expansion column and joint structure for frame expansion, which is characterized in that it is connected to the beam using an outer diaphragm method. 2. When a frame is added to a higher floor of a building with a higher floor, reinforced concrete is provided at the same position as the existing pillars so as to include the existing pillars and to keep a space between the existing pillars. An expansion column and a joint structure for additional frame construction, characterized in that the column is constructed with four wall columns that are constructed, and is joined to the beam by an outer diaphragm method.