JPH11124899A - Protruding structure of joist and its construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a joist protruding structure which has a simple structure, is easy to construct, and has excellent strength, and a construction method thereof. SOLUTION: A joist 10 which is made of a channel steel, is installed on an upper frame 2 of a lower floor wall at a predetermined interval, and is protruded from the upper frame 2.
And a joining material 11 made of a channel steel, which is joined to a portion corresponding to the upper frame 2 of the joist 10 to form a box-shaped cross section, and between a joist 10 made of the channel steel and adjacent on the upper frame 2 End joists 12 which are fitted into the upper frame 2 and are joined to the upper frame 2 and are formed of channel steel.
Or, it is composed of a stiffener 13 joined to the composite material 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joist projecting structure and a method of constructing the same, and more particularly, to a joist splashing method which is particularly effective when applied to a house using an ultra-thin steel plate-shaped steel member. The present invention relates to a projecting structure and a method for constructing the same.

[0002]

2. Description of the Related Art For example, in a wooden two-by-four house, a method of continuously projecting a floor joist to the outside like a balcony is known as a method of projecting a floor joist having a rectangular cross section to the outside and projecting the floor joist between adjacent floor joists. A method has been used in which a joist is inserted into a steel plate and fixed with nails. However, in a house using an ultra-thin steel shaped steel member (hereinafter referred to as a steel house), a preferable method has not been performed until now.

[0003]

In a wooden two-by-four house, since the members used are solid wood, it can be joined with nails from any direction. However, in a steel house, a lip used for a floor joist is used. Since channel and light channel steel have an open cross section, they cannot be joined firmly with the same combination as wood, and because of the small thickness, they tend to buckle. The method is not yet realized.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a joist projecting structure which is simple in structure and easy to construct, and has excellent strength. It is intended for.

[0005]

A joist projecting structure according to the present invention is made of channel steel, is installed on an upper frame of a lower floor wall at a predetermined interval, and is projected from the upper frame. A joist, a joint member made of a channel steel, and joined to a portion corresponding to the upper frame of the joist to form a box-shaped cross-section; and a groove steel, fitted between adjacent joists on the upper frame. And a stiffener which is made of a channel steel and which is joined to the end of the end joist and which is joined to the joist or the joining material.

[0006] A method of projecting a joist according to the present invention is a method for forming a joist, in which a box-shaped cross section is formed by joining a joining material made of a channel steel to a portion corresponding to an upper frame of a lower floor wall. The formed joists are protruded at a predetermined interval and installed on the upper frame, and the end joists to which the stiffeners made of the channel steel are joined at the ends between the adjacent joists are fitted. The end joist is joined to the upper frame, and the stiffener is joined to the joist or the joining material.

[0007]

FIG. 1 is a perspective view of one embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIGS. 3 and 4 are exploded perspective views of FIG. In FIG. 1, 1 is a lip channel steel, a wall vertical frame constituting a load-bearing wall, 2 is a light channel steel,
An upper frame 3 joined to the wall vertical frame 1 is a window opening. Reference numeral 4 denotes a veranda formed on the outdoor side by protruding a joist 10 described later. It should be noted that the veranda 4 shows a state in which the floor surface material is not stretched.

In FIG. 2 to FIG. 4, reference numeral 10 denotes a joist which is made of a lip channel steel, a part of which is protruded from the upper frame 2 to the outside and installed on the upper frame 2 at a predetermined interval. 11 is joist 1
0 is a composite material made of a light channel steel of the same size series as that of the upper frame 2, and its length L is formed longer than the web width of the upper frame 2,
At the position corresponding to the upper frame 2 of the joist 10, both openings are fitted to the joist 10 with the openings facing each other, fixed with a drilling tapping screw (hereinafter referred to as a screw), and formed in a box-shaped cross section. As is well known, in the channel series of the same size series, the inner dimension of the light channel section is formed substantially equal to the outer dimension of the lip channel section.

[0009] 12 at the end joists consisting of cladding material 11 the same kind of light channel steel, the length L ₁ is turned to the length that can be fitted between the joists 10 adjacent which is mounted on the upper frame 2 ing. 13
Is a stiffener made of the same type of lip channel steel as the vertical wall frame 1.
The length L ₂ is a length that can be fitted between the flanges of the end joists 12. The length L ₂ is inserted into both ends of the end joists 12, and the flange is fixed to the web of the end joists 12 with screws.

Next, an example of the construction of the present invention comprising the above members will be described. (1) As shown in FIG. 3, on the inner side of the tip of the joist 10 (at a position corresponding to the upper frame 2), the joining material 11 is applied to the joist 10 with its opening facing the opening of the joist 10. The two flanges are fitted and joined together with screws to form a box-shaped cross section. At this time, the length L ₃ from the tip of the joist 10 to the composite material 11 is set to a length substantially corresponding to the length of the balcony 5 protruding, for example, within 1 m.

(2) As shown in FIG. 4, a stiffener 13 is fitted between flanges at both ends of the end joist 12 with their openings facing each other, and the flange is joined to a web of the end joist 12 with screws. I do.

(3) As shown in FIG. 1 and FIG.
Are placed at a predetermined interval, and one end thereof is protruded from the upper frame 2, and a portion where the bonding material 11 is attached is placed on the upper frame 2. At this time, the length of the joining material 11 is a length in which at least both end portions protrude from both side edges of the web of the upper frame 2 (or the flange of the stiffener 13). With this configuration, the screws joining the joining material 11 and the joists 10 do not interfere with the upper frame of the wall, and when the protruding length is set to 45 mm or more, the face material serving as the finishing base is used. Do not get in the way when installing

(4) Next, the end joist 12 having the stiffeners 13 attached to both ends is fitted between the adjacent joists 10 on the upper frame 2, and the flange of the end joist 12 is attached to the upper frame 2.
Further, the web of the stiffener 13 is fixed to the web of the joist 10 with screws. At this time, the upper and lower flange surfaces of the end joist 12 and the upper and lower surfaces of the flange of the joining material 11 attached to the joist 10 are formed on the same plane. In the same manner, the end joists 12 are successively fitted between the adjacent joists 10 and fixed, the balcony end joists 14 are attached to the tips of the protruding portions of the respective joists 10, and the upper surface is made of structural plywood or the like. If a floor panel is attached, the floor structure of the protruding portion is configured.

Although an example of the construction according to the present invention has been described above, the present invention is not limited to this.
After changing the order, or placing the joists 10 on the upper frame 2, the end joists 12 may be fitted and fixed between the joists 10, and then the stiffeners 13 may be fixed. After being mounted on the frame 2, the joist 10 can be appropriately changed, for example, by fitting. Also, the case where each member is joined with screws is shown, but bolts, rivets, caulking,
Each member may be joined by spot welding or the like.

[0015]

Next, an embodiment of the present invention will be described. Web width W: 89 mm, flange width F: 40
mm, a lip width L _i: 12 mm, thickness t: using 1mm lip groove-shaped steel, the upper frame 2, W: 91mm, F: 40mm , t:
A 1 mm light channel steel was used. Also, the joist 10 has W: 23.
5 mm, F: 40 mm, L _i : 20 mm, t: 1 mm, using lip channel steel, W: 237 mm, F: 40 mm, t _i : 1 mm and length L of the same dimensions as joist 10 as the mating material 11. :
A 181 mm light channel steel was used.

Further, the end joist 12 has the same dimension series as the joist 10 and the same kind of length L ₁ as the mating material 11 is 41.5 mm.
The stiffener 13 is of the same type as the vertical wall frame 1 and its length L ₂ is approximately equal to the inner dimension between the flanges of the end joists 12. Equal length (about 235 mm) lip channels were used. In addition, the joining material 11 is connected to the joist 10
Were joined at a position of 855 mm from the tip of the box to form a box-shaped cross section.

With the above-described members, the frame of the protruding portion was formed by the above-described procedure. The laminated material 11 was protruded from the web of the upper frame 2 by 45 mm on both sides, and the joist 10 was projected 90 cm from the upper frame 2 (or the web surface of the end joist 12) to the outdoor side. As a result, FIG.
As a result, a frame having a joist 10 projecting structure as shown in FIG. The dimensions of each of the above-described members are merely examples, and are not limited thereto. Any dimensions can be selected by structural calculation or the like.

In the above description, the case where the lip channel steel is used for the lower frame 1, the joist 10 and the stiffener 13, and the light channel steel is used for the upper frame 2, the joining material 11 and the end joist 12 is shown. However, the present invention is not limited to this, and can be appropriately selected and used. In the above description, the case where the present invention is mainly applied to a balcony is shown, but the present invention can also be applied to an overhang.

[0019]

According to the present invention, a joist which is made of a channel steel, is installed on an upper frame of a lower floor wall at a predetermined interval and is protruded from the upper frame, and an upper frame of the joist made of a channel steel. A joining material which is joined to a portion corresponding to the above and forms a box-shaped section, and a channel steel, which is made of a channel steel, is fitted between adjacent joists on the upper frame and is joined to the upper frame, and a channel steel. Consists of a stiffener joined to the end of the end joist and the joist or the joining material, so that the structure is simple and easy to construct, and furthermore, the joist excellent in strength is An overhang structure can be obtained.

Further, the method for projecting a joist according to the present invention is characterized in that a box-shaped cross section is formed by joining a composite material made of a channel steel to a portion corresponding to an upper frame of a lower floor wall. The formed joists are protruded at predetermined intervals and installed on the upper frame, and the end joists of which the stiffeners of channel steel are joined between the adjacent joists and the ends of which are joined with the end joists are inserted. Since the end joist is joined to the upper frame and the stiffener is joined to the joist or the joining material, the same effect as described above can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is an exploded view and an assembled view of the joist and the joining material of FIG. 2;

FIG. 4 is an exploded view and an assembled view of the end joist and stiffener of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall vertical frame 2 Upper frame 4 Balcony 10 Joist 11 Laminated material 12 End joist 13 Stiffener

Claims (2)

[Claims] 1. A joist that is made of a channel steel, is installed on an upper frame of a lower floor wall at a predetermined interval, and is protruded from the upper frame, and a channel steel that corresponds to the upper frame of the joist. A joining material which is joined to a portion to be formed to form a box-shaped cross section, and a channel steel, which is made of a channel steel, is fitted between adjacent joists on the upper frame, and is joined to the upper frame; And a stiffener joined to the end of the end joist and joined to the joist or the joining material. 2. A joist having a box-shaped cross section formed by joining a joining material made of a channel steel to a portion corresponding to an upper frame of a lower floor wall and forming a box-shaped cross section at a predetermined interval. Installed on the upper frame, fit the end joist to which the stiffener made of the channel steel is joined to the end between adjacent joists and joined the end joist to the upper frame, A method for projecting a joist, which comprises joining a stiffener to the joist or the joining material.