JPH0115764Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for fixing a perforated PC (precast) concrete plate onto a steel frame.

Perforated PC concrete plates reduce the weight of buildings,
It has produced remarkable efficiency in terms of promoting prefabrication and ensuring construction safety, and the perforated PC concrete board has superior heat insulation, sound insulation, and fire resistance due to its through holes compared to a PC concrete board of the same weight. Therefore, in recent years, it has been used in many fields as a construction and civil engineering material.

Conventionally, various mounting structures have been proposed for mounting perforated PC concrete plates on steel frames.
For example, a perforated PC concrete plate is placed on a steel frame, one end of the reinforcing bar is fixed to the through hole of the perforated PC concrete plate, the other end of the reinforcing bar is bent and welded to the steel frame, and then the adjacent perforated PC
Perforated PC concrete plates are attached to the steel frame by injecting mortar between the open ends of the concrete plates.

However, the conventional mounting structure for perforated PC concrete plates is designed to prevent each perforated PC concrete plate from shifting on the steel frame when a horizontal force is applied to the perforated PC concrete plate. However, the mounting strength was insufficient and did not meet the strength of synthetic beams.

The present invention was developed in view of these circumstances, and the purpose is to integrally fix a perforated PC concrete plate to the steel frame and to construct a composite beam with the perforated PC concrete plate and the steel frame. It is said that In this invention, perforated PC concrete plates are placed adjacent to each other on a steel frame, and the open end faces of the perforated PC concrete plates are arranged on the steel frame so that a predetermined distance is maintained between them. At the same time, weld the shear connector onto the steel frame, set up a rectangular connection piece with a bolt hole and a locking member on the side, weld it, and tighten it from the bolt hole of the connection piece to the through hole of the perforated PC concrete plate. Insert a tool to fix the connection piece and the perforated PC concrete plate, and connect the connection piece and shear connector via the locking member of the connection piece, and place concrete or mortar between the open end surfaces of the perforated PC concrete plate. Since the perforated PC concrete plate is fixed to the steel frame by injecting the perforated PC concrete plate, the perforated PC concrete plate and the steel frame are integrated, and the perforated PC
The concrete plate and steel frame constitute a composite beam.
Therefore, according to the mounting structure of the perforated PC concrete plate according to the present invention, the perforated PC concrete plate and the steel frame constitute a composite beam, which has advantages in terms of weight reduction and cost reduction of the building. .

Drill holes related to this invention according to the attached drawings below.
A preferred embodiment of the mounting structure of the PC concrete plate will be explained in detail.

In FIG. 1, a perforated PC concrete board 10 is shown, and this perforated PC concrete board 10
As shown in the figure, it is formed into a rectangle, and through holes 12 are formed at predetermined intervals along its longitudinal direction. Furthermore, there are through holes 12 in the PC concrete board 10.
PC steel wires 14 are arranged at predetermined intervals in parallel with the PC steel wire 14, and the PC steel wires 14 are placed within the PC concrete plate 10 in a prestressed state.
The proof strength of the PC concrete board 10 is increased. A semicircular cutout recess 20 may be formed in the end face 18 of the PC concrete plate 10 in a direction perpendicular to the opening end face 16, and a method of using this semicircular recess 20 will be described later.

As shown in FIG. 2, the perforated PC concrete plate 10 is installed with its open end surface 16 placed on the H-shaped steel 22. The open end surface 16 side of the perforated PC concrete board 10 is arranged with a predetermined distance 24 maintained between the open end surface 16 of the adjacent PC concrete board 10, and this open end surface 1
The end face 18 in the direction perpendicular to 6 is the adjacent perforated PC.
A joint portion 2 is provided between the end surface 18 of the concrete plate 10
6 is formed, the width of the interval 24 is wider than the joint part 26, and this interval 24 is provided with a hole, which will be described later.
A mounting structure between the PC concrete plate 10 and the steel frame 22 is arranged.

3 to 5 show the detailed structure of an embodiment of the perforated PC concrete plate mounting structure according to the present invention. 4 is a sectional view taken along the top line in FIG. 3, and FIG. 5 is a sectional view taken along the top line in FIG. 3. At the interval 24 between the PC concrete plates 10, 10, a stud bolt 28 as a shear connector is welded in an upright state on the steel frame 22 near the joint 26. As shown in FIG. 3, a plurality of stud bolts 28 are welded on the steel frame 22 approximately in the center of the gap 24 at predetermined intervals.

On the other hand, as shown in FIG. 3, in the PC concrete board 10, the first
A backup material 30 made of expanded polystyrene is loaded into the second and third through holes 12, and an adhesive 32 made of epoxy resin is applied to the inner wall of the through hole 12 to prevent leakage. Next, a cap nut 34 is inserted into the through hole 10 to which the adhesive 32 is applied and is fixed in the through hole 12 by the adhesive 32. Projections 36 are provided on the outer periphery of the cap nut 34 at predetermined intervals, and the center of the cap nut 34 and the center of the through hole 12 are aligned by the projections 36.

Next, a rectangular connecting piece 38 is welded to the H-beam 22 in an upright position. As shown in FIG. 3, the connecting piece 38 has a length that includes at least the through hole 12 to which the cap nut 34 is fixed, and its height is as shown in FIGS. 4 and 5.
It is configured to be slightly lower than the height of the PC concrete board 10. On the stud bolt 28 side of the connection piece 38, there is a locking member 4 formed by bending it into a U-shape.
0 is welded, and the connecting piece 38 is connected to the stud bolt 28 when the locking member 40 is engaged with the stud bolt 28.
It is welded onto the shaped steel 22.

A bolt hole 42 is formed in the connecting piece 38 at a pitch interval between the first and third through holes 12 to which the cap nut 34 is fixed, and a bolt 46 is inserted into this bolt hole 42. That is, the bolt 46
End face 16 of PC concrete plate 10 and connection piece 38
A bolt 46 is inserted into the bolt hole 42 and the cap nut 34 with a liner 48 interposed therebetween, and the PC concrete plate 10 and the connecting piece 38 are fixed with the bolt 46. Liner 48 is PC concrete board 1
This is provided in order to allow the irregular shape of the end surface 16 of 0. Further, the welding of the connecting piece 38 is not carried out over the entire bottom surface of the connecting piece 38, but is carried out at a welding part 49 corresponding to the width of the liner 48, as shown in FIG. As shown in FIG. 3, the connecting pieces 38 are bolted to the end faces 16, 16 of the upper PC concrete plates 10, 10 in FIG. 3, and the lower PC concrete plates 10, 10 in FIG. A connecting piece 38 is provided close to the end faces 16, 16 of the PC concrete plate 10, and the connecting piece 38 and the lower PC concrete plate 10 are similarly fixed by bolts 46. Furthermore, in the embodiment shown in FIG. 3, two U-shaped locking members 40 are provided on the right side of the upper connecting piece 38 with the joint part 26 as the boundary, and two on the right side of the upper connecting piece 38 with the joint part 26 as a boundary. Although two pieces are provided on the left side of the connecting piece 38, the present invention is not limited to this, and as shown by the two-dot chain line in FIG. Member 40
may be provided. By arranging them alternately in this manner, the work of tightening the bolts 46 becomes easier.

Next, the open end surface 16 of the PC concrete board 10,
A concrete or non-shrink mortar 50 is injected into the space 24 between the holes 16, and an asphalt-based waterproof coat 52 is applied thereon. A urethane-based or silicon-based sealant 54 is injected between the asphalt-based waterproof coat 52 and the PC concrete board 10 to provide a waterproof function.

On the other hand, as shown in FIG. 5, a backup material 56 made of expanded polystyrene is placed between the end surfaces 18, 18 at the joint 26 between the end surfaces 18, 18 in the perpendicular direction to the open end surface 16 of the PC concrete board 10.
Epoxy resin 58 is injected from above and the adjacent
Connect the PC concrete plates 10, 10. The connection of the joints 26 of the PC concrete plates 10 is not limited to the epoxy resin 58, and may be performed by injecting fresh concrete or mortar. When pouring fresh concrete or mortar, a semicircular recess 20 is formed in the end face 18 of the PC concrete plate 10 as shown in FIG. A similar semicircular recess 20 is also formed in the PC concrete plate to form one circular hole in both. Place the ring in this circular hole and attach the lower end of the ring to the H-shaped steel 22.
Weld the top of the ring, pour ready-mixed concrete or mortar into the inside and outside of the ring, and fill the joint part 26.
By injecting concrete or mortar in between to increase the connection strength, PC concrete plate 1
It is also possible to connect joint portions 26 of 0 and 10.

The operation of the embodiment of the PC concrete plate according to the present invention constructed as described above is as follows.
The PC concrete plate 10 is fixed by a connecting piece 38 welded onto the H-shaped steel 22 and a bolt 46, and this connecting piece 38 is further secured to a stud bolt 28 welded onto the H-shaped steel 22 by a locking member 40. is connected to. Pour concrete or non-sealing mortar from above this type of connection structure5.
0 is injected and the H-shaped steel 22 and the PC concrete plate 10 are connected, so the PC concrete plate 10 is integrally fixed to the H-shaped steel 22 and functions as a composite beam.

In the above embodiment, the locking member 40 is bent into a U-shape, but the structure is not limited to this, and the locking member 60 may be bent into a hook shape as shown in FIG. and stud bolt 28
It may also be locked to.

Further, in the above embodiment, the cap nuts 34 were used to attach the bolts 46 to the PC concrete plate 10, but the present invention is not limited to this.
A known anchor bolt attachment structure may be used. For example, a tubular range capsule filled with resin, hardening accelerator, aggregate, etc. is inserted into the through hole 12 of the PC concrete board 10, and the bolt 46 is fixed in the through hole 12 by the action of this tubular range capsule. You can also do this. That is, the tubular range capsule is inserted into the through hole 12, and then the bolt 46 is inserted.
When the bolt 46 is driven in with impact, the tubular range capsule is crushed, and the resin, hardening accelerator, aggregate, and crushed lath pipe are mixed, and the bolt 46 is made of PC.
It will be fixed in the through hole 12 of the concrete plate 10.

In addition, as shown in FIG. 7, the connecting piece 3
8 may be fixed to the PC concrete board 10. That is, the connecting piece 38 is placed close to the end surface 16 of the PC concrete plate 10, and then the rod 64 is inserted into the through hole 12 from the bolt hole 42, and a part of the threaded part 62 formed at both ends of the rod 64 is inserted. As shown in FIG.
Expose from 2. Next, this exposed threaded portion 6
2 from both sides, and connect the connecting piece 3.
8 to the PC concrete board 10. Even in this case, the connecting piece 38 can be attached to the PC concrete board 10 with a predetermined strength. Note that the rod 64 may be placed in the through hole 12 in advance, and then the connecting piece 38 may be welded and fixed, and the nut 66 may be screwed and fixed.

As explained above, the perforated PC related to the present invention
According to the concrete plate installation structure, the steel frame and the PC concrete plate are connected through shear connectors and connection pieces welded onto the steel frame, and then concrete or mortar is poured into the connection part to connect the steel frame and the PC concrete plate. It is possible to firmly fix the board and give it the function of a synthetic beam. Therefore, according to the perforated PC concrete board mounting structure according to the present invention, the perforated PC concrete board and the steel frame function as a composite beam, making it possible to reduce the weight and cost of the building.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a perforated PC concrete plate.
Figure 2 is a perspective view showing a perforated PC concrete plate placed on a steel frame, and Figure 3 is a drawing showing the detailed structure of an embodiment of the perforated PC concrete plate mounting structure according to the present invention. Top of the figure - A plan view corresponding to the line arrow view, Figure 4 is the top of Figure 3 -
5 is a sectional view taken along the top line of FIG. 3, FIG. 6 is a plan view showing the structure of another embodiment of the present invention, and FIG. It is a top view showing the structure of an example. 10... Perforated PC concrete board, 12...
Through hole, 16... Opening end face, 22... H-shaped steel as steel frame, 24... Interval on perforated opening end face side of PC concrete plate, 28... Stud bolt as shear connector, 34... Cap nut, 38 …
... Connection piece, 40 ... Locking member, 42 ... Bolt hole, 50 ... Mortar.

Claims (1)

[Claims for Utility Model Registration] A rectangular connecting piece 38 having hook-shaped engaging members 40, 60 and bolt holes 42 on its sides is placed at a predetermined interval on a steel beam 22 on which a shear connector 28 is erected. A steel structural member formed by facing each other at a distance, engaging the engaging members 40 and 60 with the shew connector 28, and welding the connecting piece 38 to the steel beam 22; and a perforated PC concrete plate 10. a perforated PC concrete plate formed by embedding a cap nut 34 in a through hole 12 or inserting a rod 64 having a male screw member 62 formed at both ends into the through hole 12, the opening of the perforated PC concrete plate; End face 16
A perforated PC concrete plate is placed on the steel beam 22 so that it faces the connection piece 38 of the steel structure member, and the cap nut 34 or the rod 64 is
The male threaded portion 62 of the connecting piece 38 is inserted into the bolt hole 42 of the connecting piece 38.
The perforated PC concrete plate 10 is screwed to the connecting piece 38 by screwing the bolt 46 or the nut 66 into the cap nut 34 or the male threaded part 62, and the concrete is inserted between the facing connecting pieces 38. Alternatively, a perforated PC concrete plate mounting structure characterized in that the perforated PC concrete plate 10 is fixed onto the steel beam 22 by injecting mortar.