JPH06322994A - Collapse prevention frame - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Assembling a roof part of a building on a concrete foundation, pushing up this part with a jacking device for construction, and then assembling a wall frame and outer wall material into that space. The present invention relates to a collapse prevention frame used. [Structure] A lower frame 2 reinforced with a brace 1 and an upper frame 3 reinforced with the brace 1 are hinges 4
And the lower frame 2 using the hinge 4 as a fulcrum.
And the upper frame 3 can be folded or opened, the lower part of the lower frame 2 is pivotally attached to the seat plate 6 fixed to the top end surface 51 of the concrete foundation 5, and the upper part of the upper frame 3 is a floor beam. 7 or a seat plate 9 fixed to a shed beam 8, and the seat plates 6 and 9 are arranged on the indoor side without a mounting center C that divides the width of the concrete foundation 5 in two.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a erection method in which a roof portion of a building is assembled on a concrete foundation, this portion is pushed up by a jacking device for construction, and then a wall shaft assembly or an outer wall material is assembled in the space. The present invention relates to a collapse prevention frame used.

[0002]

2. Description of the Related Art As a construction method for a prefabricated house, a method of assembling a building while hoisting building materials with a truck crane has been considered.

[0003]

However, when construction is carried out in a residential dense area or in a place where the approach road is narrow, there are cases where the truck crane cannot be used.

Therefore, the applicant of the present invention has proposed a construction method in which a building structure is assembled on a concrete foundation from the roof portion of the building, and the finished portion is jacked up sequentially by a construction jack device.

When carrying out this jack-up, a frame capable of withstanding a horizontal load is arranged between the concrete foundation and the floor beam or the shed beam to safely finish the building even when the wind is strong. The upper part can be jacked up.

[0006]

The collapse prevention frame of the present invention is used when sequentially jacking up from a finished upper part of a building, and includes a lower frame reinforced with braces and an upper frame reinforced with braces. Is connected by a hinge, the lower frame and the upper frame can be folded or opened with this hinge as a fulcrum, and the lower part of the lower frame is pivotally attached to a seat plate fixed to the top end surface of the concrete foundation, The upper part of the upper frame is pivotally attached to a seat plate fixed to a floor beam or a shed beam, and each of these seat plates is arranged on the indoor side where the mounting center that bisects the width of the concrete foundation is removed.

[0007]

The collapse prevention frame of the present invention is arranged on at least four sides between the floor beam or the shed beam and the concrete foundation. When a floor beam or a shed beam is jacked up, the collapse prevention frame is gradually opened so that the finished upper part of the building can be lifted to a predetermined height even if it receives a horizontal load.

Further, when the floor beam or the shed beam is jacked up, the collapse prevention frame does not interfere with the outdoor side of the assembly center. Therefore, the installation work of the shaft assembly can be quickly performed with the collapse prevention frame attached. Can be carried out.

[0009]

1 and 2 show an embodiment of a collapse prevention frame according to the present invention.

In the collapse prevention frame 200 of the present invention, a lower frame 2 reinforced by a brace 1 and an upper frame 3 reinforced by a brace 1 are connected by a hinge 4, and the lower frame 2 and the upper frame 3 are supported by the hinge 4 as a fulcrum. It can be folded and opened.

The lower portion of the lower frame 2 is pivotally attached to the seat plate 6 fixed to the top surface 51 of the concrete foundation 5, and the upper portion of the upper frame 3 is fixed to the bottom surface 71 of the floor beam 7 or the bottom surface 81 of the shed beam 8. The seat plate 9 is pivotally attached.

The U-shaped hinge member 41 is attached to the lower frame 2.
Fixed to the upper ends of the vertical columns 21 arranged on both sides of the vertical frame, and the lower ends of the vertical columns 31 arranged on both sides of the upper frame 3 are connected to the hinge member 41.
The vertical pillar 31 and the hinge member 41 are connected to each other by a pivot pin 42 to form the hinge 4. But,
The configuration of the hinge 4 is not limited to this.

For example, the hinge member 41 is the upper frame 3
Alternatively, the vertical pillar 31 may be fixed to the lower end of the vertical pillar 31, and the upper end of the vertical pillar of the lower frame 2 may be inserted into the hinge member 41 and connected by the pivot pin 42. Further, the lower frame 2 and the upper frame 3 may directly connect the vertical columns 21 and 31 to each other by a pivot pin without using the hinge member 41.

The seat plate 6 is a top surface 51 of the concrete foundation 5.
It is fixed in the upward U shape. This fixing is performed using anchor bolts 62 (see FIG. 2) that are erected on the top end surface 51.

The anchor bolt 62 is planted so that the outer edge 63 of the seat plate 6 is located on the indoor side (the right side in FIG. 2) with the assembly center C for dividing the width of the concrete foundation 5 removed. .

The lower end of the vertical column 21 of the lower frame 2 is inserted into the seat plate 6, and the vertical column 21 and the seat plate 6 are pivotally attached to each other by a pin 61.
Connect with.

The seat plate 9 is fixed to the bottom surface 71 of the floor beam 7 or the bottom surface 81 of the shed beam 8 in a downward C shape. This fixing is performed using a tightening bolt 92 (see FIG. 2) attached to the floor beam 7 or the shed beam 8.

In this tightening bolt 92, the outer edge 93 of the seat plate 9 has a bottom surface 71 of the floor beam 7 or a bottom surface 81 of the shed beam 8.
On the other hand, it is attached so as to be located on the indoor side (right side in FIG. 2) without the extension line portion of the assembly center C.

If the widths of the seat plates 6 and 9 and the width of the shaft assembly 300 are the same, the assembling center C is located at the center position where the width of the concrete foundation 5 is bisected as in this embodiment.

The upper end of the vertical pillar 31 of the upper frame 3 is inserted into the seat plate 9, and the vertical pillar 31 and the seat plate 9 are pivotally attached to each other by a pin 91.
Connect with.

An upper horizontal rail 22 and a lower horizontal rail 23 are arranged between the lower frame 2 and the vertical columns 21 and 21. The upper end and the lower end of the vertical column 21 are vertically projected from the upper horizontal rail 22 and the lower horizontal rail 23.

Further, the vertical columns 31, 31 of the upper frame 3
An upper horizontal rail 32 and a lower horizontal rail 33 are also disposed between them. The upper end and the lower end of the vertical pillar 31 are vertically projected from the upper horizontal rail 32 and the lower horizontal rail 33.

Vertical columns 21, 31 and upper and lower horizontal bars 22, 23, 32, which constitute the lower frame 2 and the upper frame 3,
All 33 are made of channel steel.

The inner space between the lower frame 2 and the upper frame 3 is reinforced by a brace 1. Although not shown, the brace 1 is provided with a turnbuckle so that the reinforcement balance can be adjusted.

An anchor bolt 301 is erected on the base top end surface 51 on the outdoor side (left side in FIG. 2) of the assembly center C.

This anchor bolt 301 is a shaft assembly 300.
It is for fixing the base side of the shaft assembly 300, and the lower inner end edge 302 of the shaft assembly 300 is attached to the outdoor side (FIG.
It has been planted to be located on the left side.

Further, a tightening bolt 303 is attached to the floor beam 7 or the shed beam 8 on the outdoor side of the assembly center C.

The tightening bolt 303 is for fixing the ceiling side of the frame assembly 300, and is attached so that the upper inner end edge 304 of the frame assembly 300 is located outside the assembly center C. .

The collapse prevention frame 200 of the present invention described above.
Is used when jacking up the finished building upper part A1 from above the concrete foundation 5. Therefore, when the building upper part A1 is lifted to a predetermined height and the wall shaft assembly or the outer wall material is assembled between the concrete foundation 5 and the floor beam 7 or the shed beam 8, the collapse prevention frame 20
0 is removed. Fall prevention frame 200 removed
After that, a wall frame or the like is arranged.

FIG. 4 schematically shows a plan view of the floor beam 7 or the shed beam 8. The collapse prevention frames 200 are arranged on the four sides of the floor beam 7 or the shed beam 8 and the upper part A1 of the building is arranged.
Jack up.

FIG. 3 is a side view showing the movement of the collapse prevention frame 200 used when jacking up the upper part of a one-story building.

The shed beam 8 is placed on the concrete foundation 5 via a temporary material which is a spacer. At this time, the collapse prevention frame 200 is folded and the roof end surface 51 of the concrete foundation 5 and the shed beam 8 are placed. Attach it to the bottom surface 81.

The shed beam 8 is gradually jacked up using the construction jack device 100. Fall prevention frame 2
Since 00 is arranged in four directions, the load in the horizontal direction is supported by the collapse prevention frame 200. Therefore, the building upper part A1 can be jacked up without being affected by horizontal load such as wind pressure.

When the building upper part A1 is lifted to a predetermined height, the collapsing prevention frame 200 is arranged so that the lower frame 2 and the upper frame 3 are slightly bent inward when viewed from the side. This is because the collapse prevention frame 200 can be easily removed.

With the jack-up in this way,
The frame 300 has its base side fixed to the top end surface 51 of the concrete foundation 5 by anchor bolts 301, and its ceiling side fixed to the bottom surface 71 of the floor beam 7 or the bottom surface 81 of the shed beam 8 by tightening bolts 303.

Even if the building has two or more floors, the jack-up method is used. At this time, the collapse prevention frame 200 is arranged between the floor beam 7 and the shed beam 8 or between the floor beam 7 and the concrete foundation 5.

[0037]

When a floor beam or a shed beam is jacked up, the collapse prevention frame is gradually opened and the finished upper part of the building is lifted to a predetermined height without being collapsed even if a horizontal load is applied. You can

Further, after the floor beam or the shed beam is jacked up, it is possible to quickly attach the frame assembly without interfering with the collapse prevention frame with the collapse prevention frame attached. Therefore, workability is significantly improved.

[Brief description of drawings]

FIG. 1 is a front view showing a collapse prevention frame of the present invention.

FIG. 2 is an enlarged side view showing a seat plate mounting structure.

FIG. 3 is a side view showing the movement of the collapse prevention frame of the present invention.

FIG. 4 is a schematic plan view in which collapse prevention frames are arranged on all sides of a floor beam or a shed beam.

[Explanation of symbols]

 1 Brace 2 Lower Frame 3 Upper Frame 4 Hinge 5 Concrete Foundation 6 Seat Board 7 Floor Beam 8 Shed Beam 9 Seat Board 200 Collapse Prevention Frame A1 Building Top C Assembly Center

Claims (1)

[Claims] 1. A structure used for sequentially jacking up from a finished upper part of a building, wherein a lower frame reinforced with braces and an upper frame reinforced with braces are connected by a hinge, and this hinge is used as a fulcrum. The lower frame and the upper frame can be folded and opened, the lower part of the lower frame is pivotally attached to the seat plate fixed to the top end surface of the concrete foundation, and the upper part of the upper frame is a floor beam or a shed beam. A collapse prevention frame, which is pivotally attached to a fixed seat plate, and each of these seat plates is arranged on the indoor side with the center of assembly dividing the width of the concrete foundation from the center.