JPS6355235A - Prefabricated system of lightweight steel framework - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a prefabricated system for a frame of a prefabricated house using a lightweight steel frame.

[Conventional technology]

FIG. 9 is a perspective view showing an example of a conventional lightweight steel framework prefabricated system. As shown in the figure, a conventional prefabricated system consists of studs 1. Pillar 2. Beam 3゜Column base hardware 3a, Earthquake resistant frame joint hardware 4. Earthquake-resistant frame 5. It is composed of column-beam joint metal fittings 6. Pillar 2 of this prefab system
1 To join the stud 1 to the foundation 9 or the top of the beam 3, insert the column 2 and stud 1 into the column base hardware 3a installed in advance on the top of the foundation 9 or the top of the beam 3, and then connect them with bolts. To do this. In addition, to connect the column 2 and the beam 3, insert the dogleg-shaped joint hardware in advance, and then connect the U-shaped column-beam joint hardware 6 to the column 2 (with a bolt). The joining hardware 6 is connected to the column 2 with bolts, and then the column-beam joining hardware 6 and the beam 3 are joined with Pol!. Insert the upper pillar into the dogleg-shaped joint metal fitting that has been inserted in advance)
・Join by. Furthermore, the installation of the earthquake-resistant frame 5 is as follows:
First, bolt the box-shaped #4 seismic frame joint 4 to the column 2. Beam 3. After installing on foundation 9, #4 seismic frame 5
is attached to the seismic frame joint hardware 4 with bolts.

According to the conventional prefabricated lightweight steel framework system configured as described above, there have been problems as shown below.

(1) Column-to-column, column-to-beam 2 stud-to-beam, or foundation connections are made via column base joining hardware and column-to-beam joining hardware, which increases the number of joining hardware and increases costs. Furthermore, since the joining hardware is installed on-site, the number of EIj to be installed is large, and many of the installation positions are high, making construction difficult.

(2) The shape of the metal fittings is often box-shaped or U-shaped.
Difficult to tighten bolts, making installation difficult.

(3) When installing seismic frame joint hardware across two perpendicular members, such as a column (stud) and a beam or foundation, it is difficult to absorb errors in bolt hole clearance.

(4) When connecting a pipe column to the top of the pipe column when building an extension, the dogleg-shaped metal fittings inside the column must be replaced, making construction difficult.

FIG. 10 is an explanatory diagram showing an example of a prefabricated lightweight steel framework system for solving the above problems. As shown in the figure, the conventional prefabricated system consists of beams 10. Tube column 112
Stud 122 through post 13. It is composed of a column-beam joint hardware Yf4 earthquake brace 14. In this case, the lower portions 11 a, 13 a of the pillars 13 through which the tube columns 112 pass, and the upper portions 12 a and lower portions 12 b of the studs 12 have cross-shaped cross-sectional shapes,
Pol directly to foundation 15 or beam 10! The seismic brace 14 is also directly joined with bolts.

FIGS. 11 and 12 are enlarged front views of the through-post, the middle part, the pipe post, and the upper part of the through-post shown in FIG. 10, respectively.

As shown in the figure, dogleg-shaped metal fittings 30 are installed in advance at the tops of the pipe columns 11, through-posts 13, and in the middle of the through-posts 13, and T-shaped column-beam joint metal fittings 31 are attached to these with bolts. installation, then attach the beam 10 to this column-beam joint 31 with bolts 2.
Join from 2. Also, this column-beam joint hardware 31 has #4
It is shaped so that the a-brace 14 can be attached at the same time.

In addition, FIG. 13 is an enlarged front view showing the joined state of the stud and the lower part of the stud through which the pipe 2 is inserted, and FIG. 14 is an enlarged front view showing the joined state of the upper part of the stud.

[Problem that the invention seeks to solve]

The conventional lightweight steel frame prefabricated system configured as described above has the following problems.

(1) When extending a prefabricated house, the structure does not allow two pipe studs to be easily connected to the top of the pipe column, making it difficult to extend the house.

(2) The lower part of the column and the upper part of the stud with 2 tubes and 2 studs have a cross-shaped cross section and bolt holes are provided to attach the seismic brace, but ensure sufficient end clearance for both the bolt holes of the seismic brace's battledore. I can't.

(3) Columns and beams are connected via column-beam joint hardware, which requires setting the same hardware after the pillars are erected or before the construction, which complicates construction. .

The present invention was made in order to solve the above-mentioned problems, and it is a lightweight steel shaft that can be easily mass-produced, reduces costs, and is easy to use, inventory management, and construction, and shortens erection time. The purpose is to improve prefabricated systems.

[Means for solving problems]

The present invention has been made to achieve the above objects,
The present invention provides a prefabricated system having a lightweight steel frame structure, which is made of pipe columns and studs whose upper and lower parts have a cross-shaped cross section, and metal fittings for connecting seismic braces having protrusions for handling vertical forces.

[Effect]

Each component is joined by bolts or by bolts through a splice plate without using joining hardware.

〔Example〕

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

In addition, parts with the same functions as in Fig. 10 are given the same symbols.
The explanation will be omitted. 11 (12) is a square steel government-made pipe post (stud), lla is the upper part of the pipe post 11 which has a cross-shaped cross section, 11
Similarly, reference numeral b indicates the lower part of the tube post 11 which has a cross-shaped cross section (12a is the upper part of the stud 12 which has a cross-shaped cross section, and 12b is the lower part of the stud 12 which has a cross-shaped cross section).

2 and 3 are exploded perspective views of essential parts of the embodiment of the present invention shown in FIG. 1, respectively. 20 is a tube column, 11 (
Upper part 11a or lower part 11b (upper part 12a of stud 12)
or a seismic brace joint joining with the lower part 12b), 2
1 is an earthquake-resistant brace connected to the #4 earthquake brace joint hardware 20. Reference numerals 22 and 23 denote poles and nuts for joining each member, and 24 a splice plate for joining the end of the beam 10 and the upper part 11a of the tube column 11.

FIG. 4 is an enlarged perspective view of the seismic brace joint 20 shown in FIG. 2. Reference numeral 30 denotes an oblong joining port hole provided in the earthquake-resistant brace joining hardware 20. Note that the joining bolt holes 30 are connected to the main body 2 of the earthquake-resistant brace joining hardware 20.
0a, and the bolt hole 31 for attaching the seismic brace is provided approximately at the center of the orthogonal member 20b that is orthogonal to the main body 20a. 20c is a protrusion provided at the bottom of the main body 20a on the opposite side of the orthogonal member 20b;
0d is a groove provided in the upper part of the protrusion 20c. By the way, the force (T) acting on the seismic brace joint 20 can be divided into vertical force (PV) and horizontal force (PH) as shown in FIG.

Here, adjust the mutual positions of the seismic brace mounting bolt holes and the bolt holes 30 for attaching the brace joint hardware 20 to A compressive force is always applied to the side of the cylinder.

In addition, the connection port 1 of the #4 seismic brace connection hardware 20. A protrusion 20c is provided at the bottom of the hardware 20 so that the allowable stress does not decrease due to shearing force applied to the plate. In order to ensure that such force is transmitted by pressure, the joining bolt holes 30 of the seismic brace joining hardware 20 are oval shaped. Note that the cross-shaped tube column upper part +1a is longer than the beam 10, and is designed to allow insertion of an earthquake-resistant brace and a joining metal fitting 20.

In addition, the connecting bolts of the earthquake-resistant brace joint hardware 20 include:
In order to apply a large tensile force and to secure the bolt, a part of the bolt is made of thick cast steel, as shown in FIG. 6, and the bolt hole 31 is threaded.

A detailed explanation of the present invention configured as described above will be as follows. To mutually join the tube column 11 (stud 12) and the tube column 11, and the tube column 11 and the beam 10 shown in FIG. First, four bolt holes 11c provided in the upper plane 101 of the lower part 11b of the tube column 11 having a cross-shaped cross-section, and four bolt holes lid provided in the upper plane 102 of the upper part 11a having a cross-shaped cross-section, Join with bolt 22 and Narrow I/23. Next, the bolt holes in the cross section of the upper part 11a of the tube column 11 and the bolt holes 10a provided at the ends of the beams 10 on both sides are bolted together via the splice plates 24, respectively. Furthermore, the seismic brace joining hardware 20 is joined to the pipe column 11 (stud 12) with bolts. FIG. 7 is a front view showing the state of each member after being joined.

On the other hand, the beam 10 and pipe column 11 (or stud 1
2), the bolt holes 11c provided in the upper plane 101 of the lower part 11b of the pipe column 11 having a cross-shaped cross section, and the bolt holes 1 provided in the upper flange 10d of the beam 10.
0e is bolted together using bolts 22 and nuts 23. In addition, earthquake-resistant brace joint hardware 20 and '#4 earthquake brace 14
It is also connected to the pipe post 11 (stud 12) with a pole 22.

Note that studs 12 can also be joined to the lower flange 10e of the beam 10.

FIG. 8 shows a front view of each member after they are joined.

〔Effect of the invention〕

As is clear from the above description, the present invention has the following remarkable effects.

(1) The types of two studs can be unified to one type each, and there are no protrusions from the column surface, making mass production easy, reducing costs, and being less bulky, which is advantageous for transportation and inventory management. It is.

(2) Beam-to-beam joints do not require the use of joining hardware as with other techniques, making construction easier and reducing construction time.

(3) Since the pipe posts and pipe posts and the pipe posts and studs are easily joined with bolts, it is easy to accommodate expansions and renovations.

(The 4L1 Seismic Press joint hardware can be attached to a pillar with a single bolt, making construction faster than other technologies. Also, it can be easily removed, moved, and added to when building an extension.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing an embodiment of the present invention, Figs. 2 and 3 are exploded perspective views of the main parts of the embodiment shown in Fig. 1, and Fig. 4 is an enlarged perspective view of the main parts of Fig. 2. , FIG. 5 is an explanatory diagram of the action of FIG. 4,
FIG. 6 is a sectional view of the main part of an embodiment of the present invention, FIGS. 7 and 8 are enlarged front views of the main part of the present invention, and FIG. 9 is a perspective view showing an example of a conventional prefabricated light steel frame system. , Fig. 10 is an explanatory diagram showing an example of another conventional prefabricated light steel framework system, and Figs. 11, 12, 13, and 14 are enlarged front views of the main parts of Fig. 10, respectively. be. 11...Pipe column 12...Stud 20...#4H brace joint hardware agent Patent attorney Masaru Sato 3rd FjA Figure 4 Figure 5 Figure 7'flJ Figure 6 Figure 8 Opening ``Tsu Treetop'' Figure II g+3 Figure 12 v!J 14th FXJ

Claims (1)

[Claims] A prefabricated system with a lightweight steel frame structure, consisting of pipe columns and studs whose upper and lower parts have a cross-shaped cross section, and metal fittings for connecting seismic braces with protrusions that handle vertical forces.