JPH08165786A - Support structure of high floor type double-floor - Google Patents

Abstract

PURPOSE: To obtain a support structure which has a high support rigidity against the floor panel and facilitates works under the floor. CONSTITUTION: This support structure is provided with a number of struts 2 both longitudinally and laterally on a floor slab 1, a plurality of sleepers 3 parallelly installed on respective struts 2, and a number of floor joists 4 which are fixed on the sleepers 3 so as to cross each other at right angles and on which the floor panels are laid. The struts 2 and the sleeper 3 are connected together by a pair of diagonal members 10 of which one end is detachably connected to the lower part of the strut 2 and the other end is detachably connected to the lower side of the middle part of the sleeper 3 partitioned by the struts 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high floor type double floor support structure.

[0002]

2. Description of the Related Art In a room where OA equipment such as a computer is installed or in a clean room, a floor panel is installed on the floor surface of a building through bundle pillars and used as a space for wiring, piping and air circulation under the floor. are doing.

In this double-floor structure, since heavy equipment is generally arranged on the upper part of the floor panel, in order to increase the supporting rigidity to the floor panel and suppress the vibration, the bundle column and the bundle column are combined. The placement intervals are tight.

[0004]

However, in this type of double floor, there are many cases in which a worker enters under the floor to perform the work. Therefore, the workability is impaired if the distance between the bundle columns is reduced. was there.

As disclosed in Japanese Patent Application Laid-Open No. 4-182564, diagonal members are arranged from the bases of four vertical columns provided with pedestals for supporting floor panels toward the upper center thereof, and floating pedestals are provided at their intersections. The support structure provided has been developed to increase the number of support points for the panel. However, in this structure, since the diagonal members intersect, the workability is also poor, and the diagonal members themselves are used as the support material for the panel, and if this is removed, the floor panel may fall off. I couldn't remove it.

The present invention solves the above problems, and an object of the present invention is to provide a high-floor double-floor support structure that has a high support rigidity for floor panels and that allows an operator to easily work under the floor. To do.

[0007]

In order to achieve the above object, the present invention is directed to a large number of bundle column groups arranged vertically and horizontally on a building floor surface and installed in parallel to the upper part of each bundle column group. And a plurality of joists that are fixed orthogonally to the upper part of the Daihiki and have floor panels installed on the upper surface thereof. A pair of diagonal members is detachably connected to the lower portion and the other end is detachably connected to the lower central portion of the section partitioned by the bundle columns of the Daihiki.

[0008]

With the above construction, the presence of the diagonal member not only enhances the strength of the floor, but also suppresses the floor vibration due to the vibration of the equipment. Also, when performing underfloor work, the diagonal members can be removed without removing the floor panel, which makes it easy to create an environment where it is easy to work.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention applied to a raised floor type double floor in a clean room will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing a double floor support structure according to the present invention, FIG. 2 is a partial plan view, and FIG. 3 is a sectional view.

The support structure shown in the figure is a floor slab 1 of a frame.
A group of bundle columns 2 arranged vertically and horizontally at intervals, a plurality of large pulls 3 installed in parallel to the upper portion of each bundle column 2 in the same direction, and an upper portion of the large pull columns 3. And a large number of joists 4 fixed orthogonally to the
The joists 4 are made of H-shaped steels having different sizes, and have sufficient supporting strength.

On the joist 4, a large number of square floor panels 6 are installed and fixed at its four corners through a large number of stud bolts 5 that form a support pedestal planted in the joists 4, and are spread over one surface. This constitutes the floor surface.

A seat surface portion 2a installed and fixed to the floor slab 1 is integrally welded to the lower surface of the bundle column 2, and a fixing bracket 7 is welded to the inside of the lower portion of each adjacent bundle column 2 facing each other. ing. Further, a fixing bracket 8 is also integrally welded to the lower central part of the section partitioned by the bundle columns 2 of Daihiki.

One end between each bundle 2 and the large pull 3 is detachably connected to the bracket 7 of each bundle 2 through a bolt nut 9, and the other end is the same as the bracket 8 of the large pull 3. A pair of diagonal members 10 made of L-shaped steel, which are detachably connected via bolts and nuts 9, are connected in a substantially triangular shape.

This diagonal member 10 is a diagonal girder for ensuring the strength when the span of the bundle column 2 is wide, and is a floor panel 6.
And a sufficient supporting strength can be obtained against the load applied to it. Further, it is possible to suppress the vibration of the floor due to the vibration of the equipment.

Since this embodiment is applied to a clean room, the bundle columns 2 have spans of 3 to 4 m, and the height dimension from the floor slab 1 to the upper surface of the floor panel 6 is 2 to 4.
It is set to a sufficiently wide interval of about m. Therefore, the space under the floor along the longitudinal direction of the haul 3 is a space in which a worker can stand up and down freely, and the direction orthogonal to this is blocked by the diagonal member 10, but this is partially removed. Even so, the joists 4, the large pulls 3 and the bundle columns 2 have a sufficient supporting strength for statically supporting the loading load of the floor panel 6. Therefore, when doing underfloor work,
Since the diagonal member 10 can be removed without removing the floor panel 6, a space that is easy to work can be easily created.

This structure can be applied not only to a clean room but also to a double floor for wiring and piping of OA equipment. In this case, the height of the space under the floor is set to an extremely low value. .

[0018]

As described above in detail with reference to the embodiments, in the high floor type double floor supporting structure according to the present invention, the strength of the floor is increased by hanging the diagonal members between the bundle columns and the large hauls. In addition to increasing the floor vibration, it also suppresses floor vibration due to equipment vibration.
In addition, the vertical and horizontal span of the bundle column can be made wide enough, and the direction orthogonal to the installation direction of Daihiki is blocked by diagonal members, but even if this is partially removed, joist, Daihiki and bundle column Therefore, it has sufficient support strength to statically support the floor load.

Therefore, the space under the floor along the longitudinal direction of the habiki is a space in which workers can freely move in and out, and in the underfloor work, if the diagonal members are temporarily removed without removing the floor panel, the underfloor space is reduced. There is an advantage that the area is suitable for workers to enter and work.

[Brief description of drawings]

FIG. 1 is a perspective view showing a double-floor support structure according to the present invention.

FIG. 2 is a plan view of the same portion.

FIG. 3 is a sectional view of the same.

[Explanation of symbols]

 1 floor slab 2 bundle column 3 Daihiki 4 joist 6 floor panel 10 diagonal

Front Page Continuation (72) Inventor, Daiichi Yoshihara, 4-640 Shimoseido, Kiyose-shi, Tokyo, Obayashi Technical Research Institute Co., Ltd.

Claims (1)

[Claims] 1. A large number of bundle column groups vertically and horizontally arranged on a building floor surface, a plurality of large pulls installed in parallel to the upper portion of each bundle column group, and a plurality of large pull rods orthogonal to the upper portion of the large pull rods. Fixed, and provided with a number of joists on which the floor panel is installed on the upper surface, the bundle column and the Daihiki, one end is detachably connected to the lower portion of the bundle column,
A raised floor double-floor support structure characterized in that the other end is joined by a pair of diagonal members detachably connected to the lower central part of the section partitioned by the bundle columns of the Daihiki.