JPH07127304A - Pc concrete panel and execution method therefor - Google Patents

Abstract

PURPOSE:To improve workability largely, and to 'shorten the term of work by forming cylindrical forms communicating adjacent sheathed pipes only by narrowing the spaces of PC concrete panels. CONSTITUTION:A plurality of stages of sheathed pipes 5 are buried into concrete panels 2, in which Joint grooves 4 are formed to end faces 2a, 2b. A plurality of PC concrete panels 2, in which rubber rings 16 are installed onto the end faces 2b of the panels 2, from which one opening sections 6 of the sheathed pipes 5 are exposed, so as to surround the opening sections 6 and metallic cylindrical bodies 17 surrounding the opening sections 6 of the sheathed pipes 5 are protruded from the other end faces 2c, are arranged in a surface shape. The front end sides of the metallic cylindrical bodies 17 protruded from the end faces 2a of one PC concrete panels 2 are bitten into the rubber rings 16 mounted on the end faces 2b of the adjacent panels 2, and cylindrical forms 22 communicating both sheathed pipes 5 are formed among the adjacent sheathed pipes 5. Mortar 14 is pured into the joint grooves 4 and connected, and PC lines 1 inserted into the sheathed pipes 5 are clamped and unified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a PC used when constructing a structure such as an aquarium or a bridge to which a large load is applied.
The present invention relates to a panel in which a (prestressed concrete) wire is embedded and a construction method thereof.

[0002]

2. Description of the Related Art When constructing a water tank to which a large water pressure is applied, the wall surface of the water tank is formed by arranging a plurality of PC concrete panels 2 ...
By tightening the PC wire 1, the PC concrete panels 2 ... Are integrated to form a high-strength wall surface.

As shown in FIG. 7, a conventional PC concrete panel 2 has joint grooves 4 and 4 formed on end faces 2a and 2b to which adjacent concrete panels 2 and 2 are joined. A plurality of sheath tubes 5 through which the PC wire 1 is inserted are embedded along a plurality of stages as shown in FIG. Recessed grooves 7 are formed in the openings 6 of the sheath tubes 5 along the joint grooves 4 of the end faces 2a and 2b to which the adjacent concrete panels 2 and 2 are joined.

The groove 7 is formed on the front side of the PC concrete panel 2 as shown in FIG. 7, and has a front hexagonal shape as shown in FIG. Further, as shown in FIG. 7, fitting grooves 9 and 9 are formed in the longitudinal direction on both sides of the joint groove 4 on the end face 2b, and the band-shaped rubber packings 8 and 8 are partly fitted to the fitting grooves 9 and 8 to project the tip end side. It is set up.

When a wall surface is constructed using the PC concrete panel 2, fastening metal fittings (not shown) are first attached to the front and back sides of the PC concrete panel 2 in the vicinity of the end faces 2a and 2b. After this, the PC concrete panels 2 are erected upright, then the bolts of a tightening metal fitting (not shown) are rotated to narrow the gap, and as shown in FIG. 7, band-shaped rubber packings 8 are crimped to the opposite end surfaces 2a. Then, both sides of the joint groove 4 are sealed.

Next, as shown in FIG. 8, a connecting pipe 10 made of metal is put into a front hexagonal concave groove 7 in which the opening 6 of the sheath pipe 5 is exposed, and both ends of the connecting pipe 10 are adjacent to each other. 5 through the openings 6, 6. After this, the connecting pipe 10
Wrap tape 11 around the end of the sheath to seal it
Connect 5 Next, as shown in FIG. 7, a frame plate 13 is attached and fixed to the front side where the concave groove 7 is formed, and the mortar 14 is poured from the joint groove 4 on the upper side and filled. At this time, a large water pressure is applied to the lower connecting pipe 10, but since the tape 11 is wrapped and sealed, the mortar 14 does not penetrate inside and the PC
The passage of line 1 is secured. After the mortar 14 solidifies,
Insert the PC wire 1 ... through each sheath tube 5 ... Then tighten each PC wire 1 ...
Unify. Thereafter, mortar (not shown) is poured into the sheath tube 5 to fix the PC wire 1 in the sheath tube 5 to complete the wall surface.

However, in the conventional PC concrete panel 2, in order to connect the sheath tubes 5 and 5 of the adjacent PC concrete panels 2 and 2, the concave grooves 7 and 7 are formed in the end faces 2a and 2b, and the hand is formed from here. Then, both ends of the connecting pipe 10 are inserted into the openings 6, 6. Next, after sealing the end portion of the connecting pipe 10 with the tape 11, the frame plate 13 is attached, and after that, the mortar 14 is poured into the joint groove 4, which causes a lot of trouble. As described above, there are several hundreds of places where the connecting pipe 10 is inserted into the sheath pipe 5 from each concave groove 7, and moreover, this work is performed on site, which requires manpower, and the construction period becomes long and the construction cost becomes high. There was a flaw.

[0008]

DISCLOSURE OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, and only by narrowing the interval between adjacent PC concrete panels with a tightening metal fitting, a cylindrical form which communicates adjacent sheath pipes can be formed. It is formed in the gutter, and it eliminates the work of inserting connecting pipes, tape winding, and frame plate installation / removal work as in the past, greatly improving the workability on site and shortening the construction period to reduce construction costs. The present invention provides a PC concrete panel with reduced noise and a construction method thereof.

[0009]

According to a first aspect of the present invention, a plurality of sheath tubes are provided in a lateral direction inside a concrete panel having joint grooves formed on end faces joined to adjacent concrete panels. A ring-shaped or cylindrical elastic body having an outer diameter larger than this is attached to the end surface of the panel that is embedded in the step and one of the openings of the sheath tube is exposed so as to surround the opening of the sheath tube. A PC concrete panel characterized in that a cylindrical body having a larger outer diameter and a smaller outer diameter than the elastic body is provided so as to surround the opening of the sheath tube on the end surface of the panel where the other opening is exposed. Is.

According to a second aspect of the present invention, a sheath tube is embedded in a plurality of stages along the lateral direction inside a concrete panel having joint grooves formed on the end faces joined to adjacent concrete panels. On the end face of the panel where one opening of the sheath tube is exposed, a ring-shaped elastic body having a larger outer diameter is attached so as to surround the opening of the sheath tube, and the other opening of the sheath tube is exposed. A plurality of PC concrete panels in which a cylindrical body having a larger outer diameter and a smaller outer diameter than the elastic body are provided so as to surround the opening of the sheath tube on the end surface are arranged in a plane, and one PC concrete The tip side of the cylindrical body protruding from the end surface of the panel is made to bite into the ring-shaped elastic body provided on the end surface of the adjacent PC concrete panel, and both sheath tubes are connected in the joint groove between the adjacent sheath tubes. Construction of a PC concrete panel characterized by forming a cylindrical formwork, then pouring mortar into the joint groove to join adjacent panels, and then tightening and unifying the PC wire inserted into the sheath tube. Is the way.

Further, according to a third aspect of the present invention, a sheath tube is embedded in a plurality of stages along the lateral direction inside a concrete panel having joint grooves formed on the end faces joined to adjacent concrete panels, On the end face of the panel where one opening of the sheath tube is exposed, a cylindrical elastic body having a larger outer diameter is projected so as to surround the opening of the sheath tube, and the other opening of the sheath tube is exposed. On the end surface of the panel, a plurality of PC concrete panels are arranged in a plane so that a cylindrical body having a larger outer diameter and a smaller outer diameter than the elastic body is projected so as to surround the opening of the sheath tube. Of the PC concrete panel of the adjacent PC
It is inserted into a cylindrical elastic body that projects from the end surface of a concrete panel, the outside of this elastic body is clamped with a wire or band, and a tubular shape that connects both sheath tubes into the joint groove between adjacent sheath tubes. A method for constructing a PC concrete panel, which comprises forming a form, then pouring mortar into the joint groove to join adjacent panels, and then tightening and unifying the PC wire inserted into the sheath tube. .

[0012]

When a water tank or a bridge is constructed using the PC concrete panel of the present invention, when the PC concrete panel is arranged in a plane and the panel gap is narrowed by the tightening metal fittings, the end surface of one PC concrete panel A cylindrical body that surrounds the outside of the sheath tube projects into the ring-shaped elastic body that is attached to the end surface of the opposing panel so as to surround the outside of the sheath tube, and forms a joint groove between the adjacent sheath tubes. A tubular mold frame is formed therein for communicating both sheath tubes. Also, in the case of a structure in which a cylindrical elastic body is projectingly provided on the other end face opposite to the cylindrical body, the cylindrical body is inserted into the cylindrical elastic body when the panel space is narrowed by the fastening metal fitting. In this state, when the outer side of the elastic body is tightened with a numbered wire or band, a tubular frame that connects both sheath tubes is formed in the joint groove between the adjacent sheath tubes.

After that, when mortar is poured from the joint groove in the upper part and filled, the tip of the cylindrical formwork bites into the ring-shaped elastic body or is inserted into the cylindrical elastic body and tightened to form a watertight structure. Therefore, even if a large water pressure is applied, the mortar does not penetrate inside, and the passage of the PC line is secured. After the mortar solidifies, the PC wire is inserted into each sheath tube, and then each PC wire is tightened to integrate the adjacent PC concrete panels. After that, mortar (not shown) is poured into the sheath pipe to fix the PC wire in the sheath pipe to complete the wall surface of the water tank and the bridge.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to FIGS. As shown in FIG. 1, the PC concrete panel 2 has joint grooves 4 and 4 vertically formed on end surfaces 2a and 2b which are joined to the adjacent concrete panels 2 and 2, and inside the concrete panel 2, along the horizontal direction. The sheath tubes 5 through which the PC wire 1 is inserted are embedded in a plurality of stages as shown in FIG. Further, as shown in FIG. 1, fitting grooves 9 and 9 are formed in the vertical direction on both sides of the joint groove 4 of the end surface 2a to which the adjacent concrete panels 2 and 2 are joined, and strip-shaped rubber packings 8 and 8 are formed therein. Is partially fitted and the tip side is projected.

On the end surface 2b of the PC concrete panel 2 where one opening 6 of the sheath tube 5 is exposed, the sheath tube 5 is formed.
A ring-shaped rubber ring 16 having a larger outer diameter is embedded so as to surround the opening 6 and is integrally molded.
In addition, the opening 6 of the sheath tube 5 is provided on the end surface 2a of the PC concrete panel 2 where the other opening 6 of the sheath tube 5 is exposed.
The outer diameter is larger than this so that the rubber ring 16
A metal cylinder 17 having a smaller outer diameter is provided so as to project. The outer diameter of the metal cylindrical body 17 is, for example, 30 mm greater than the outer diameter of the rubber ring 16.
It's about a millimeter in size, and it's designed to bite even if it's shifted vertically or horizontally by about 15 millimeters. Further, a blade 18 is formed on the protruding tip of the metal cylindrical body 17 so that it easily bites into the rubber ring 16.

The end face 2 of the PC concrete panel 2 ...
Fastening metal fittings 19 are provided on the front and back sides near a and 2b. This is one in which brackets 20, 20 attached to anchor bolts are connected by bolts 21, and by rotating the bolts 21, the interval between the PC concrete panels 2, 2 is narrowed.

When a wall surface is constructed using the PC concrete panel 2 having the above structure, the PC concrete panel 2 ...
Fastening metal fittings on the front and back sides near the end faces 2a, 2b of the
After mounting the brackets 20 and 20 of 19, the PC concrete panel 2 is erected and the bolts 21 of the tightening bracket 19 are mounted. Next, the bolts 21 of the tightening fitting 19 are rotated to narrow the gap, and as shown in FIG. 2, the strip-shaped rubber packing 8 is pressure-bonded to the opposite end faces 2b to seal both sides of the joint groove 4.

At the same time, the sheath tube 5 of the end surface 2a
A metal cylinder 17 having a blade 18 formed at a tip protruding from the outer periphery of the sheath tube 5 bites into a rubber ring 16 mounted so as to surround the outer side of the sheath tube 5 on the opposing end surface 2b, and the adjacent sheath tube 5, A tubular mold frame 22 is formed in the joint groove 4, 4 between the two for communicating the two sheath tubes 5, 5. in this case,
The outer diameter of the metal cylindrical body 17 is, for example, 30 times larger than the outer diameter of the rubber ring 16.
It is small about mm, and it surely bites vertically or horizontally by about 15 mm, so even when forming a curved wall like the wall of a cylindrical water tank, the tubular form 22 has a watertight structure. Is obtained.

After this, the mortar 14 is poured from the upper joint groove 4 and filled. At this time, the lower cylindrical mold 22 is
Since the tip of the PC ring 1 penetrates into the rubber ring 16 to form a watertight structure, the mortar 14 does not enter inside due to water pressure, and the PC wire 1
The passage is secured. After the mortar 14 has solidified, the PC wires 1 ... Are inserted into the respective sheath tubes 5 ... And then the respective PC wires 1 ... are tightened to integrate the adjacent PC concrete panels 2. Thereafter, mortar (not shown) is poured into the sheath tube 5 to fix the PC wire 1 in the sheath tube 5 to complete the wall surface.

FIG. 3 shows another embodiment of the present invention.
End faces 2b on the upper and lower sides of the PC concrete panel 2
Guide pins 24, 24 formed of a metal rod and having a length longer than the protruding length of the metal cylindrical body 17 are provided in a protruding manner. Further, a guide hole 25 formed of a metal pipe having an inner diameter larger than the outer diameter of the guide pin 24 is provided on the end surface 2a of the PC concrete panel 2 which faces the PC concrete panel 2. The inner diameter of this guide hole 25 is
It is smaller than the outer diameter of the guide pin 24 by, for example, about 20 mm, and is inserted even if it is displaced by about 10 mm vertically and horizontally. The other structure is similar to that shown in FIGS.

In the structure in which the guide pins 24, 24 are provided on the upper and lower end surfaces 2b of the PC concrete panel 2, since the guide pins 24 are sufficiently longer than the protruding metal cylinder 17, the PC concrete panels 2, 2 are firstly attached. If the upper and lower guide pins 24 are inserted into the guide holes 25 facing each other when standing upright, the relative positional relationship between the metal cylindrical body 17 and the rubber ring 16 is restricted, and the tightening fitting 19 is tightened. If the bite is not visible from the outside, the metal cylinder 17
The tip of the can be bited into the rubber ring 16.

FIG. 4 shows another embodiment of the present invention, in which the end face 2a of the PC concrete panel 2 has a ring-shaped rubber having an outer diameter larger than that of the end 6a of the sheath tube 5 so as to surround the opening 6. The cushion 26 is embedded, one end side of the inclined metal cylindrical body 17 is fitted therein, and the tip end side is obliquely projected. With this structure, like the wall of a cylindrical water tank,
It is suitable for forming a curved wall surface, and since the rubber cushion 26 fitted with the metal cylinder 17 can be attached to the concrete panel 2 after the PC concrete panel 2 is molded, there is no protruding portion and molding is easy. Is.

FIG. 5 shows another embodiment of the present invention, in which the end face 2b of one PC concrete panel 2 is
One end of a rubber tube 28 having an outer diameter larger than this is embedded so as to surround the opening 6 of the sheath tube 5, and the tip side projects. On the other end face 2a of the other PC concrete panel 2 facing this, a metal cylindrical body 17 having a larger outer diameter than that of the rubber tube 28 so as to surround the opening 6 of the sheath tube 5 and a smaller outer diameter than the inner diameter of the rubber tube 28. Is projected. A corrugated portion 27 is formed on the protruding outer peripheral surface of the metal cylindrical body 17, and the length of the protruding portion is smaller than the interval between the joint grooves 4 and 4. The other structure is similar to that shown in FIGS.

In this structure, when the tightening metal fittings 19 are tightened, the space between the adjacent PC concrete panels 2, 2 is narrowed, and the metal cylindrical body 17 projecting from the end face 2a projects toward the opposite end face 2b. It is inserted into the provided rubber tube 28. When the distance between the end faces 2a and 2b becomes about 5 mm, the rubber tube 28 is wound around the outer circumference of the rubber tube 28 through the number wire 29 through this gap, and then tightly tightened. Then, the cylindrical form 22 is formed by fixing. After that, when the distance between the end faces 2a and 2b is further narrowed, the rubber tube 28 partially expands due to elasticity, but a tubular mold 22 having a watertight structure is formed. In this case, the tightening band may be used instead of the number wire 29.

In the above embodiment, the rubber ring 16 and the rubber tube 28 made of rubber are used, but they may be made of soft plastic.

[0026]

As described above, according to the PC concrete panel and the method for constructing the same according to the present invention, the tubular mold for communicating the adjacent sheath pipes can be obtained only by narrowing the space between the adjacent PC concrete panels with the tightening metal fitting. Since the frame is formed in the joint groove, the work of inserting the connecting pipe, winding the tape and attaching and removing the frame plate as in the past is omitted, greatly improving the workability on site and shortening the construction period. The cost can be reduced.

[Brief description of drawings]

FIG. 1 is a horizontal cross-sectional view showing a state before joining a PC concrete panel according to an embodiment of the present invention.

FIG. 2 is a horizontal cross-sectional view showing a state after the PC concrete panels shown in FIG. 1 have been joined.

FIG. 3 is a vertical cross-sectional view showing a joined state of a PC concrete panel provided with guide pins according to another embodiment of the present invention.

FIG. 4 is a horizontal cross-sectional view showing a state in which a PC concrete panel in which a metal cylinder according to another embodiment of the present invention is inclined and attached is joined.

FIG. 5 is a horizontal cross-sectional view showing a PC concrete panel in which a metal cylinder according to another embodiment of the present invention is covered with a rubber tube and fixed to form a cylindrical form.

FIG. 6 is a front view in which a conventional PC concrete panel is integrally assembled to form a wall surface.

FIG. 7 is a plan view showing a state in which a conventional PC concrete panel is assembled in a partially broken state.

FIG. 8 is a front view showing a state in which the PC concrete panel of FIG. 7 is assembled and the frame plate is removed, with a part thereof being cut away.

[Explanation of sign]

 1 PC line 2 PC concrete panel 2a End face 2b End face 4 Joint groove 5 Sheath pipe 6 Opening 8 Rubber packing 10 Connecting pipe 11 Tape 13 Frame plate 14 Mortar 16 Rubber ring 17 Metal cylinder 18 Blade 19 Clamp 22 Cylinder type Frame 24 Guide pin 27 Corrugated part 28 Rubber tube Line 29

Claims (3)

[Claims] 1. A sheath tube is embedded in a plurality of stages along a lateral direction inside a concrete panel having joint grooves formed on end faces joined to adjacent concrete panels, and one opening of the sheath tube is exposed. A ring-shaped or cylindrical elastic body having a larger outer diameter is attached to the end surface of the panel to surround the opening of the sheath tube, and the sheath tube is attached to the end surface of the panel where the other opening of the sheath tube is exposed. A PC concrete panel characterized in that a cylindrical body having a larger outer diameter and a smaller outer diameter than the elastic body is provided so as to surround the opening portion. 2. A sheath tube is embedded in a plurality of stages along the lateral direction inside a concrete panel having joint grooves formed on end faces joined to adjacent concrete panels, and one opening of this sheath tube is exposed. A ring-shaped elastic body having a larger outer diameter is attached to the end surface of the panel to surround the opening of the sheath tube, and the opening of the sheath tube is attached to the end surface of the panel where the other opening of the sheath tube is exposed. A cylindrical body having a plurality of PC concrete panels projecting a cylindrical body having a larger outer diameter and a smaller outer diameter than the elastic body so as to surround, and projecting on an end surface of one of the PC concrete panels. The distal end side of the above is bitten into the ring-shaped elastic body provided on the end surface of the adjacent PC concrete panel to form a tubular form frame for communicating both sheath tubes in the joint groove between the adjacent sheath tubes, Then PC inserted into the sheath tube after pouring mortar into the joint groove and joining adjacent panels
A method for constructing a PC concrete panel, which is characterized by tightening wires to integrate them. 3. A sheath tube is embedded in a plurality of stages along the lateral direction inside a concrete panel having joint grooves formed on the end faces joined to adjacent concrete panels, and one opening of this sheath tube is exposed. On the end face of the panel, a cylindrical elastic body having an outer diameter larger than that of the sheath pipe is provided so as to surround the opening of the sheath pipe, and the other end of the sheath pipe is exposed. A plurality of PC concrete panels having a cylindrical body having a larger outer diameter and a smaller outer diameter than the elastic body so as to surround the portion are arranged in a plane, and the PC concrete panels are projected on an end surface of one of the PC concrete panels. The cylindrical body is inserted into a cylindrical elastic body protruding from the end face of the adjacent PC concrete panel, and the outside of the elastic body is fastened with a wire or band so that the cylindrical body is inserted into the joint groove between the adjacent sheath tubes. sheath Form a tubular form that connects the tubes,
Next, a method for constructing a PC concrete panel, characterized in that mortar is poured into the joint groove to join adjacent panels, and then the PC wire inserted into the sheath tube is tightened to be integrated.