JP4193250B2 - Ceiling base beam - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ceiling-underlying integrated beam that can be easily adapted to a so-called free plan of a building in which not only the layout of each dwelling unit but also the use of the building itself can be freely changed after the building is built.
[0002]
[Background Art and Problems to be Solved by the Invention]
In recent years, especially when building high-rise buildings, it has become possible to freely change the layout of each dwelling unit according to changes in the family structure and tenants' preferences after the building is built, and the use of the building itself is also free according to social conditions Realization of a free plan for the building that can be changed to is strongly desired.
[0003]
For example, a building that was originally used as an office building can be changed to a building for other uses such as a housing complex due to changes in the social situation thereafter, and vice versa, there is no need to rebuild the building. The building is semi-permanent and extremely economical.
[0004]
In order to do so, it is necessary to clarify the respective uses of architecture, structure and equipment and separate them.
By the way, until now, in the case of buildings with steel structures, structural materials such as steel beams and equipment such as ducts are complicated and disturbed, and the ceiling is also partially lowered and becomes a ceiling. There are many cases where the situation is complicated, and the current situation is that it has not been able to cope with the free plan of buildings.
[0005]
In general, the piping and the air conditioning duct 20 are provided on the back of the ceiling through a through hole 21b provided in the web portion 21a of the steel beam 21 as shown in FIG. 3A, for example. As shown in FIG. 3 (b), if the pipe or air conditioning duct 20 is installed below the steel beam 21 and separated from the steel beam 21, the pipe or air conditioning duct 20 is not restricted by the steel beam 21 and is free. It is possible to change to a free plan of the building.
[0006]
However, in this case, it is inevitable that the ceiling height (distance between the ceiling surface and the floor surface immediately above the floor) is provided with an equipment space below the steel beam 21 and the floor height becomes higher.
[0007]
The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a ceiling base integrated beam that can easily cope with a free plan of a building.
[0008]
[Means for Solving the Problems]
The integrated beam with a ceiling base according to claim 1 is an underfloor configured by laying a deck plate on a beam and placing concrete on the deck plate, or an underfloor configured by laying a PC board on the beam. The ceiling foundation integrated beam is composed of a beam spanned at a predetermined interval and a ceiling foundation configured on the lower side of the beam, and the ceiling foundation is suspended from the beam at a predetermined interval. A plurality of suspension bundles, a plurality of field edges spanned between the suspension bundles in a lattice shape in the direction perpendicular to the axial direction of the beam, and a plurality of diagonal members spanned between the beams and the field edge. And the hanging bundle, the field edge and the diagonal member are made of section steel .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show an embodiment of the present invention. In the figure, a beam 1 (hereinafter referred to as “small beam 1”) is spanned at a predetermined interval, and a deck plate 2 is laid on the small beam 1. On top of that, concrete 3 is placed.
[0010]
In this way, the floor of each floor is constituted. Instead of placing the concrete 3 on the deck plate 2, a floor plate such as a PC plate may be laid directly on the small beam 1.
[0011]
On the other hand, a plurality of field edges 4 extend below the small beam 1 in the form of a lattice in the axial direction of the small beam 1 or in the direction perpendicular to the axial direction of the small beam 1. A plurality of suspension bundles 5 are suspended from the small beam 1 at predetermined intervals in the axial direction of the small beam 1. An upper end portion of the hanging bundle 5 is connected to a liner 1 a protruding from the lower end portion of the small beam 1. The field edge 4 is fixed and supported at the lower end of the hanging bundle 5.
[0012]
Further, a plurality of diagonal members 6 are bridged between the adjacent hanging bundles 5 and 5. Both ends of the diagonal member 6 are connected to a connecting portion between the small beam 1 and the hanging bundle 5 and a connecting portion between the field edge 4 and the hanging bundle 5, respectively. Thus, the ceiling base of each floor is configured. A plurality of ceiling panels 7 are attached to the lower side of the field edge 4.
[0013]
Note that the diagonal member 6 is not necessarily required, and is installed only when it is particularly necessary for preventing deflection.
Further, the ceiling base materials such as the small beam 1 and the liner 1a, as well as the field edge 4, the hanging bundle 5, and the diagonal member 6 are all made of a shape steel such as a strip steel, an H-shaped steel, and a grooved steel. They are connected together by connecting with a plurality of connecting bolts (not shown) or by welding.
[0014]
Since the ceiling base of each floor is configured in this way, a large space a can be formed between the small beam 1 and the field edge 4 on the back of the ceiling, and this space a is passed through the pipe 8 and the air conditioning duct 9. It can be used as a facility space.
[0015]
In addition, since the pipe 8 and the air conditioning duct 9 are completely separated from the small beam 1, the positions of the pipe 8 and the air conditioning duct 9 are required without being restrained by the small beam 1 even after the installation. Because it can be changed freely according to the situation, it is possible to make a free plan.
[0016]
The small beam 1 is designed with a cross-section designed in consideration of deformation (deflection), floor vibration, and the like, but by additionally using a ceiling base material such as the field edge 4 as a structural material, the small beam 1 The amount of steel frame can be reduced by reducing the cross section of the steel sheet.
[0017]
In addition, ceiling base materials such as the field edge 4, the hanging bundle 5, and the diagonal member 6 are integrally assembled by connecting bolts, welding, and the like. While it can be used as an anti-vibration material for floors, it can additionally be used as a ceiling base material such as a field edge 4, a hanging bundle 5, and a diagonal material 6 as a structural material and not included as a legal structural member. You can get rid of the regulations.
[0018]
At the time of construction, ceiling base materials such as the small beam 1 and the field edge 4 are attached to the attachment position while fixing or connecting the members one by one, or these members are assembled on the ground in advance and the floor portion and the ceiling portion. May be formed in a panel shape of a predetermined size, which may be lifted by a crane or the like and installed at the mounting position.
[0019]
【The invention's effect】
The present invention has the configuration described above, and has a plurality of suspension bundles suspended from the beam at a predetermined interval and a plurality of field edges spanned between the suspension bundles on the lower side of the beam. Since a large space can be formed under the beam behind the ceiling, the large space can be effectively used as an installation space for installing piping and air conditioning ducts.
[0020]
In particular, piping and air conditioning ducts can be installed separately from the beam under the beam, so that the positions of the piping and air conditioning ducts can be freely changed even after installation, which can greatly contribute to building a free plan.
[0021]
Further, by assembling ceiling base materials such as field edges and hanging bundles integrally with a small beam and additionally using it as a structural material, the amount of steel frame can be greatly reduced by reducing the cross section of the small beam.
[Brief description of the drawings]
FIGS. 1A and 1B show an example of a ceiling-base-integrated beam, in which FIG. 1A is a partially enlarged longitudinal sectional view, and FIG.
FIG. 2 is a cross-sectional view showing an example of a ceiling base integrated beam.
FIGS. 3A and 3B are cross-sectional views showing an example of a conventional ceiling back structure. FIGS.
[Explanation of symbols]
a Space 1 Small beam
1a Liner 2 Deck plate 3 Concrete 4 Field edge 5 Hanging bundle 6 Diagonal material 7 Ceiling panel 8 Piping 9 Air conditioning duct

Claims (1)

A ceiling-under-ground integrated beam constructed under a floor constructed by laying a deck plate on a beam and placing concrete thereon, or under a floor constructed by laying a PC board on the beam. A beam spanned at a predetermined interval and a ceiling base configured on the lower side of the beam, and the ceiling base is between a plurality of suspension bundles suspended from the beam at a predetermined interval and the suspension bundle. The beam is composed of a plurality of field edges spanned in a lattice pattern in the direction perpendicular to the axial direction of the beam, and a plurality of diagonal members spanned between the beam and the field edge, and the hanging bundle, field edge The ceiling base beam is characterized in that the diagonal member is formed of a shape steel .

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