JPH0450733Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention is designed to be attached to the building frame structure.
This relates to a mounting device for PC boards (precast concrete boards).

(Prior art) As shown in Fig. 7, the conventional PC board mounting device for buildings of this type uses an angle for the mounting bracket of the PC board, and a fixing plate is attached to the outer surface of one piece of the mounting bracket. Fix the anchor plate C vertically and fix the lower part of the anchor reinforcing bar D to both sides of the fixing plate C, and leave the upper ends of both anchor bars in an open state, and let the other piece of the mounting bracket protrude from the PC board A. Embed the fixing plate C and the anchor reinforcing bar D in the lower end of the PC board A, and attach the mounting bracket B to the PC board A.

Then, stack an appropriate number of shims on top of the pedestals of the steel beam E, place the other protruding pieces of the mounting bracket on top of the shims, and fix them with bolts and nuts inserted through their through holes to secure the steel frame. PC board A is attached to the beam.

(Problems to be solved by the invention) In the conventional building PC board mounting device described above, (1) An anchor plate C is welded to the angle mounting bracket B, and an anchor reinforcing bar D is welded to the anchor plate C. Since the welding process requires a lot of effort to fix them, the cost is high.

(2) The parts that are embedded in the PC board A and support the mounting bracket B are a single plate fixing plate C fixed to the mounting bracket B and anchor reinforcing bars D fixed to both sides of the fixing plate C. Therefore, the cross-sectional performance of the part buried in the PC board is low and a sufficient anchoring effect cannot be obtained.

(3) The other piece of mounting bracket B that protrudes from PC board A is a flat plate, so its strength is weak. Therefore, if the PC plate A is thick, in order to compensate for the lack of strength of the mounting bracket B, a reinforcing plate should be welded between the two pieces of the mounting bracket B in a direction perpendicular to it. The need arises.

(4) When the thickness of the PC plate A is thick, or when the distance between the PC plate A and the steel beam E is large, it is difficult to adapt the mounting bracket B of the PC plate A to the above conditions, resulting in poor workability. bad.

There are problems with these points.

(Means for solving the problem) Therefore, in order to solve the above problem, this invention uses a section steel for mounting the PC board A, and the groove direction is made of the section steel and is aligned with the surface of the PC board A. A reinforcing plate 2 connects both sides of a self-weight holder 1, which is arranged so as to protrude forward in the front-rear direction at right angles, and a hole 3 is provided in the bottom plate of the front protrusion. Anchor bolts 4 and horizontal anchors 5 are fixed, and the base of the self-weight support 1, anchor bolts 4, and anchors 5 are buried in the PC board A to constitute a mounting device for the PC board A of the building.

(Function) The self-weight support 1 of the PC board A is supported by the pin 7 of the base metal 6 fixed to the steel beam B using the hole 3, and the PC board A is attached to the steel beam B.

(Embodiment) To explain the structure of an embodiment of this invention shown in Figs. 1 to 6, A is a PC board, 1 is a
A self-weight support that is attached to the upper end of the PC board A. It is made of shaped steel, and the groove direction is perpendicular to the surface of the PC board A in the front-rear direction, and the front protrusion of the self-weight support 1 is Reinforcing plates 2 connecting both sides of the bottom plate are installed on the front and rear parts of the bottom plate.
A large-diameter hole 3 is bored between them, and a crane hooking hole 8 is bored in the middle of both side walls. On the other hand, the upper ends of the vertically extending dogleg-shaped anchor bolts 4 are welded to both intermediate sides of the rear base of the self-weight support 1, and the left-right insert bars that act as anchors are inserted into the through holes in the intermediate portions of both sides of the base end. 5 ₁ is inserted so as to protrude to both sides, and an anchor 5 ₂ made of angle material is welded to the lower surface so as to protrude from both sides. Then, attach the base of the self-weight holder 1, anchor bolt 4, insert bar 5 ₁ and anchor 5 ₂ .
Embed it inside PC board A.

9 is a steady rest that is attached to the lower end of PC board A.
A recess 10 is provided at the front edge of a horizontal piece that is made of angle material and projects forward from the surface of the PC board A, and the base is buried in the PC board A.

Reference numeral B designates an upper steel beam of the base structure, a mounting bracket 11 is welded to the rear of the steel beam B, a base metal 6 is fixed to this with bolts 12, and a male threaded cylinder 13 is mounted on the tip of the base metal 6. is erected and the adjustment nut 14 is screwed thereto, and a pin 7 is erected at the center of the male threaded cylinder 13, and the through holes of the washer 15 and the mounting washer 16 are fitted to the pin 7 in sequence. A stopper 18 consisting of a nut of the mounting washer 16 is screwed onto the upper end screw 17 of the pin 7.

C is a lower steel beam of the frame structure, a mounting base 19 is welded onto the steel beam C so as to protrude rearward, and a base metal 20 is welded onto the rear end of the mounting base 19. A pin 21 is set upright on the top, and the through hole of the mounting washer 22 is fitted to the pin 21, and the upper end screw 2 of the pin 21 is inserted.
3 and a stopper 2 consisting of a nut with a mounting washer 22.
Screw on 4.

Then, when the hole 3 of the self-weight support 1 is loosely fitted into the pin 7, the self-weight support 1 is placed on the mounting washer 16, and the PC board A is suspended from the upper steel beam B, the recess of the steady rest 9 10 is fitted into the middle part of the pin 21. In addition, 25 and 26 are welding.

Next, its effect will be explained. After hooking the hook of a crane to the hook hole 8 of the dead weight support 1 of the PC board A and lifting the PC board A with the crane, lower the PC board A and hook the hole 3 of the dead weight support 1 of the PC board A. When the PC board A is loosely fitted to the pin 7 and the self-weight support 1 is placed on the mounting washer 16 and the PC board A is suspended from the upper steel beam B, the PC board A
The recess 10 of the steady rest 9 protruding from the front lower end of the base metal 2 fixed to the lower steel beam C due to its own weight.
The PC board A is fitted into the pin 21 on the top of the PC board A and suspended from the upper and lower steel beams B and C. Therefore, a crane
Remove from PC board A.

Next, after adjusting the PC board A up and down by rotating the adjustment nut 14, the upper and lower ends of the PC board A are adjusted by moving back and forth to bring the PC board A to a predetermined position. Weld 25 to the mounting washer 16 and steady rest 9 to the mounting washer 22, respectively.
Step 26 completes the installation of PC board A.

Therefore, when the building is deformed due to earthquakes, wind, etc. and displacement occurs between the floors, the mounting washer 16 is adjusted to the pin 7 according to the displacement in the horizontal and vertical directions.
, the mounting washers 22 slide on the pins 21, respectively,
The PC board A is tilted in the left and right direction, and only the frame structure is deformed without any unreasonable resistance being applied to the PC board A.

At that time, the dead weight support 1 has its mounting washer 16 attached to the stopper 18, and the steady rest 9 has its mounting washer 22 attached to the stopper 18.
are respectively locked by the stopper 24, and the self-weight holder 1 is prevented from coming out from the pin 7, and the steady rest metal 9 is prevented from coming off from the pin 21.

In addition, left and right insert bars 5 1 and anchors _{5 2 are} attached to the self-weight support 1 and act as anchors.
may be provided with only one of them.

(Effects of the invention) The PC board mounting device for buildings of this invention has the following remarkable effects.

(1) Use a sectioned steel for the weight support of the PC board, make the groove direction perpendicular to the surface of the PC board, protrude, and bury the base within the PC board to attach the weight support to the PC board. Therefore, (a) Since the anchor bolt and anchor can be directly attached to the base of the self-weight support, the only welding required is the welding of the section steel and the anchor bolt and anchor, which makes the process easy and has good workability. Moreover, it can be produced at low cost.

(b) Since the cross-section of the part buried in the PC board of the self-weight support is shaped, its cross-sectional performance is improved as it becomes an integral part, and together with the anchor bolt and anchor attached to it, a sufficient anchor Effects can be obtained.

(c) The part of the self-weight support that protrudes from the PC board has a shaped cross section, so the rising pieces on both sides act as ribs, and together with the integral shape, it is strong against torsional action. .

(d) Even if the thickness of the PC plate is thick or the distance between the PC plate and the steel beam is large, it is possible to support self-weight bearings by simply increasing the length of the shaped steel accordingly. Useful for work.

(e) Since the self-weight support is made of section steel, horizontal crane hooking holes can be optionally provided on both sides of the support.

(2) Since both sides of the section steel are connected by reinforcing plates, the self-weight bearings are reinforced with the reinforcing plates and the cross-sectional performance is greatly improved.

[Brief explanation of the drawing]

Figure 1 shows a building according to one embodiment of this invention.
Vertical side view of the upper mounting part with the PC board attached,
Figure 2 is a front view of the mounting bracket, Figure 3 is a plan view, Figure 4 is a slope view of the same PC board, and Figure 5 is its
This is a side sectional view of the PC board in its installed state, with the middle section cut away. FIG. 6 is an enlarged plan view of the lower mounting portion of the PC board, and FIG. 7 is a side sectional view of the lower mounting portion of the conventional PC board. A...PC board, 1...self-weight bracket, 2...reinforcement plate,
3...hole, 4...anchor bolt, 5 ₁ ...insertion bar, 5 ₂ ...anchor.

Claims (1)

[Scope of utility model registration request] The two sides of the self-weight support, which is made of shaped steel and is arranged so that the groove direction is perpendicular to the surface of the PC board and protrudes forward, are connected by a reinforcing plate, and a hole is provided in the bottom plate of the front protrusion. A PC board mounting device for a building, in which vertical anchor bolts and horizontal anchors are fixed to the rear base of a self-weight support, and the base of the self-weight support, anchor bolts, and anchors are buried within the PC board.