JPH02120457A - Construction of double floor - Google Patents

Abstract

PURPOSE:To facilitate conveyance and the execution of work and improve oscillation resistance by connecting a plurality of sill members to each other with connecting rods to form sill frames, and by fitting legs at four corners of the frames to arrange the legs on a floor slab and to erect floor boards on the upper surface. CONSTITUTION:A plurality of sill members 1, 1 are connected to each other in parallel at specified intervals with connecting rods 4, 4, to form rectangular sill frames A.... After that, at four corners at least on the sill frames A..., legs are fitted, and the frames A are arranged at specified intervals on a floor slab. Then, between the sill members 1, 1 in the sill frames A... and between the sill frames A..., floor boards are erected. As a result, the respective sill frames A... are arranged stably and independently and the floor boards can be attached to or removed from the frames A partially and easily.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a method for constructing a double floor using a joist frame.

[Conventional technology and its problems]

In No. 62-185977, the inventor proposed a joist mechanism made of cross-shaped steel, and the joist mechanism that has been used allows the finished height of the subfloor to be kept low and allows the use of various types of floorboards. This is one of the best. (7) However, it was difficult to stabilize the joist because it had to stand on its own.

(Means for solving the problem) In order to solve the above problem, in this invention, a plurality of joists are connected in parallel at predetermined intervals using connecting rods to form a rectangular joist frame. No.j2 of the joist frame Attach legs to at least four corners and install them on the floor slab at specified intervals, between the joists within the joist frame, and between the joists within the joist frame of the joist frame, and adjacent to each other. The floorboards are installed between the joist frames.

[Effect]

With this configuration, two or more joists are connected in parallel with connecting rods to form a joist frame, and (1) by attaching legs to at least the four corners, the joist frame becomes stable and self-supporting. can do.

[Example 1] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

As shown in FIG. 1, a joist material 1 having a downward opening and consisting of grooved shaped steel 10 is formed by roll forming using a galvanized steel plate with a thickness of 2.3 mm. Its length is 1,500 meters, the width of the section is 50 meters, the height is 30 meters, and the width of the entrance section is 251 meters. 50 on side 12
(2) - Provide 8X]50 oblong operation holes 13 at intervals.

A round bar of 8 pieces is machined to form a slide nut 2 as shown in Fig. 2 ta + (di). 30φ, thickness 5
mm pedestal 21.20n square, thickness 5 dragon fitting part 22, M
Continuing from the 2R male screw 23 with a length of 811, an M12 female screw 24 passes through the center.

The bolt leg 3 has a pot-shaped recess 3 at the bottom, as shown in FIG.
It is an M12 bolt with a number 1 attached, and a plus-shaped operating groove 32 is attached to the top end.

As shown in Fig. 4, a galvanized steel plate with a thickness of 2.3 fins is used;
An angled connecting rod 4 consisting of a cm flange 42
form. An insertion hole 43 through which the fitting portion 22 of the slide nut 2 is inserted is provided at both ends of the flange.

As shown in FIG. 5, books are placed on the joists at intervals of 450 m5, and both ends are connected with connecting rods 4 to form a joist frame. It is convenient for construction to provide a three-way slit 44 between the end of the joist l and the connecting rod.

An example of the connection method is as follows. As shown in FIG. 6, the base 21 of the slide nut 2 is opened, the fitting part 22 is fitted into the opening 11 on the lower surface of the joist 1, and the insertion hole 43 of the connecting rod 4 is inserted into the male screw 23. Natsuto 2
5 Tighten and secure. Each slide nut 2 has a bolt leg 3 attached to it.

With the above configuration, Porto rivers are attached to the four corners of the joist frame, but it is also possible to increase the load-bearing strength of the joist frame by attaching slide napfts to the middle part of the joist material 1 as appropriate and joining the bolt legs. Can be done. It is convenient if the operation hole 13 is positioned just above the bolt W, since the height of the bolt leg can be adjusted from above the joist frame.

Floor board Figure 7 (8) (as shown in BL), on the back side of the surface board 51 made of galvanized steel plate with a thickness of 2.3 fi, in the longitudinal direction except for the 251 m wide mounting portions 52 at both ends. A floorboard 5 is formed by laminating reinforcing material 53 on which III-shaped ribs with groove-like unevenness are formed.
・Length is 500 mm・Thickness is 30n+.

Further, as the special floor plate 6, a semi-cylindrical body as shown in FIG. 8 is used. Special floorboards are formed using the same material as the floorboards. Its length is 1100 h, width is 1 oo sm, and height is 10 cm.

Nijodoko Ω Seiya The construction method is shown in Figure 9.

Joist frames A are installed on the floor slab at predetermined intervals vertically and horizontally. Usually, the gap in the longitudinal direction is 100 times less, and the gap in the short direction is 450 w*. The size of this gap can be freely selected, and it is also possible to omit the gap in the electrical conductivity direction and install the joist frame against it. In this case, the joist frames may be joined together using bolts and nuts.

Adjust por h 117Jl to bring out the level of the joist frame.

As shown in FIG. 10, a floorboard 5 is placed between the joists forming the joist frame. Floorboards 5 are also placed between adjacent joist frames (gap -2 in the short direction) between the joists 1 on the outside of the joist frames.

As shown in Fig. 1, in the gap in the longitudinal direction, there is a slit 4 between the connecting rods 4 at the end of the joist frame and the connecting rods facing each other.
4, and the special floor board 6 is placed on the rack.

By laying down the floorboards and special floorboards, a flat floor can be formed, and a wiring space B can be formed under the floor, allowing wiring to be carried freely all over the floor. In the present invention, the gap 2 in the short direction between the joist frame and the joist frame can form a wiring path leading to the space above the floor by extending the floorboard.

Furthermore, by removing the special floor plate, it is possible to connect the gaps 2 in the longitudinal direction and form a continuous wiring path in a lattice pattern as a whole. By attaching various outlets and the like to the floorboard 5 within the joist frame and using it as a wiring outlet, the gap between the joist frames can be secured as a dedicated wiring route that is not connected to wiring equipment.

As shown in Figure 12 of Keio University, a joist C with a port leg 3 attached via a slide nut 2 to the opening 1.1 on the lower surface of the joist material 1 made of lip groove shaped steel can be cut at any point. 7 is also excellent in temples where the legs can be easily attached, and it is also possible to use it as a stand-alone joist without assembling it as a joist frame. A washer 26 may be used in place of the connecting rod shown in FIG. 6 to attach the slide nut.

When constructing a joist frame, cutting is required near walls, but it is easier to construct using such a joist.

[Example 2] A hat-shaped steel 14 as shown in FIG. 13 is used as the joist frame joist material 1. Small lips 16 projecting upward are attached to both side edges of the brim 15. The size of the joists is 1200sx/1-i
The width of 'li'i+2 is 25 dragons, the height is 30 dragons, the width of the brim is 25 dragons, and as in Example 1, an operation hole 13 is provided on the top surface.

A base plate 7 as shown in FIG. 14 is formed. A joining hole 71 with a diameter of 18 mm is provided in the center of the approximately rectangular galvanized steel plate. Both ends thereof are bent upward L7 to form a clamping piece 72, and a clamping claw 73 for clamping a small lip of the Hunt shape steel is provided on the inner surface thereof. Both (II + $ in the center of the edge)
A part of the A plate is bent upward, and a fitting piece 74 that fits inside the opening of the hat-shaped steel is attached.

As shown in FIG. 15, an angled connecting rod 4 consisting of a bow flange 42 similar to that of Example 1 is prepared. An 18 dragon angle insertion hole 43 is provided at both ends of the flange, and a notch 45 into which the base plate is inserted is provided at both ends of the web along the 7 flange.

Header processing is performed on the round steel to form a joining nut 20 as shown in FIGS. 16+al to (d). 30φ, thickness 5 dragon pedestal 21.18W square, thickness 5111 joint part 27.1
It continues around the protrusion 28 with a length of 6φ and 5 turns, and has an M in the center.
12 female screws 24 are passed through.

As shown in FIG. 17, the base plate 7 is inserted into the notches 45 at both ends of the connecting rod 4, and the connecting hole 71 and the connecting rod 4 are inserted.
t# return hole 43, pass through the joint 20 from below, and press the four corners of the joint 27 from above to caulk the connecting rod and base plate to firmly join them.

When assembling the joist frame, as shown in Figure 18,
The openings at both ends of the hat shape steel 14 are fitted onto the fitting pieces 74 of the base plate, and the small lips 16 of the collar 15 are inserted into the holding claws 7.
It fits between 3. Connect two Hunt sections to two connecting rods 4
A bolt leg 3 is screwed into each joint nut 20 from below, which is connected to form a rectangular joist frame A.

The construction method is the same as in Example 1, but as shown in FIG.
Erection 4. Similar to the joist material constituting the joist frame, the floor Fii, 5 is placed on this hat-shaped steel to form a wiring space B below. Since the hat-shaped steel placed in the gap -1 in the longitudinal direction is easy to attach and detach, it is convenient for wiring work and the like.

In the case of this embodiment, as shown in FIG. 20, the floor plate 5 is provided with a notch 54 on the side surface, and the lower surface of the end of the floor plate is mounted on the top 15 of the hatch-shaped steel, It is possible to use an IF that relates to the small lip 16 of the brim.

〔effect〕

Since the present invention is configured as described above, it has the following features.

■ The joists are assembled into a frame, so they are stable. Also, since the large frame is made up of at least four legs, it has high earthquake resistance.

■ Because the joist frame is lightweight, it is convenient for single frame construction.

■ Since stable joist frames are laid out and installed side by side, it is easy to determine the spacing between the frames, and leveling work can be determined for each frame, making it easy to install.

- Since both ends of the floorboard are mounted on joists, it is only necessary to have some elongation in the -axial direction, there is a wide range of materials to choose from, and the molding method is simple, so the cost is low.

■ Since the floorboards are supported by the joist frame all at once, there is no need to attach each floorboard one by one. Therefore, the width of the floorboard should be narrowed.
It can be made lightweight and is convenient for attaching and detaching floorboards for wiring work, etc.

■ A continuous wiring path can be formed in the gap between the joist frames by removing the floorboards.

In particular, by attaching and detaching the special floorboard, a grid-like wiring path can be created that covers the entire surface of the slab, making it convenient for wiring work.

■ As a single joist, even if it is cut at a small point, it is possible to easily attach a section at that point, making it convenient for border construction.

■ Since the length of single joists is easy to adjust and the cross section is approximately rectangular, it is easy to work on site, such as by cutting and analyzing multiple joists at once.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of a joist material, Fig. 2 (al is a slide nut (111 view, fb) is a plan view thereof, (C1 is a bottom view thereof, fdl is Figure 3 is a side sectional view showing an example of Bolt Town, and Figure 4 is a side sectional view of the area.
FIG. 5 is a plan view showing an example of the joist frame; FIG. fa) is a side view showing an example of the floorboard, (bl is
8 is a front view showing an example of the special floor board, FIG. 9 is a plan view showing an example of the construction method of the present invention, and FIG. 10 is a side explanatory view thereof. Figure 11 is the same (an explanatory front view thereof; Figure 12 is a front sectional view showing one example of the joist; Figure 13 is a front sectional view showing another example of the joist material; Figure 14 is a plan view of the heath plate. rJl, Fig. 15 is a perspective view showing another example of the connecting rod, Fig. 16 18+ is a side view of the connecting rod, (bl is the top view thereof, tel is the bottom view thereof, (di is , also a side sectional view of the same, FIG. 17 shows the joint state of the connecting rod and the heath plate (Fig. Figure 20 shows an example of the construction method for floorboards and their construction method (■11 explanatory diagram).
It is a surface part explanatory view. Patent Distributor Co., Ltd. Representative Application Planning Kiyoshi Sansui±3! O8rl1 2'11 Figure 2! 〕figure

Claims (2)

[Claims] (1) The ends of at least two long joists are connected in parallel using connecting rods to form a rectangular joist frame, and legs are attached to at least four corners of the joist frame at predetermined intervals. The plan is to install floorboards on the floor slab with Featured method of constructing a double floor. (2) The joist frame according to claim (1) is characterized in that a protrusion is provided in the direction in which the end of the joist extends, and the joist is constructed between the protrusion and the protrusion of the adjacent joist frame. A continuous method of joist frames.