JPH082163Y2 - Opening and closing plug device for concrete filling in bridge foundation - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening and closing plug device for filling concrete in a bridge foundation, which is related to an improvement of a plug structure used when pouring and filling concrete into the bridge foundation.

[0002]

2. Description of the Related Art Conventionally, as a basic structure of a bridge, as shown in FIG. 6, reinforcing bars 91, 91 ... Are arranged in a box-shaped or cylindrical steel-frame base frame 90, and the steel-frame base frame 90 is made of concrete. What is filled and solidified with 92 is used.
When the concrete 92 is filled, a filling through hole 93 having a diameter of about 20 mm is bored in the side wall of the steel frame base frame 90 at a relatively lower portion, and an air vent hole 94 having an appropriate diameter is formed in the side wall of the upper portion. It is provided with a hole and is filled with the through hole 9 for filling.
The method of inserting the vinyl hose 95 into the inside of the steel frame 90 from 3 and pouring and filling the concrete 92 by the pressure feeding device via the vinyl hose 95 has been generally adopted. (Here, "concrete" is the cement.
To the extent that it can pass through a grate, mortar, or vinyl hose 95
In general, it is made of gravel, etc.
Of course, it is concrete. )

[0003]

However, according to the above-mentioned conventional method, after inserting the vinyl hose 95 from the filling through hole 93 and pumping the concrete 92, the vinyl hose 95 is closed by the hose band 96. However, the vinyl hose 95 is cut and removed after the concrete 92 is solidified, and the working time is sufficiently shortened even if the high speed solidifying concrete is used because of the time required for solidifying the concrete. I can't. In addition, there is a problem that the work is complicated.

The present invention has been made in view of the above problems, and can be fixed to a through hole formed in a steel-framed base frame with one-touch operation, and a concrete cap can be formed by simply capping the plug body after filling the concrete. It is an object of the present invention to provide an opening / closing plug device for concrete filling in a bridge foundation having a novel structure that prevents outflow and does not require post-treatment.

[0005]

A concrete filling opening / closing plug device for a bridge foundation according to the present invention has a cylindrical shape which is inserted and fixed to a filling through hole formed in a box-shaped or cylindrical steel frame. And a cap that engages and engages with the outer end of the cylindrical body is formed while the non-return valve structure including a disc-shaped member made of synthetic rubber is formed in the cylindrical passage. It is a summary.

[0006]

Therefore, the filling hose is inserted into the steel frame so as to push open the check valve piece structure, the concrete is injected and filled by the pressure feeding device through the filling hose, and then the filling hose is pulled out. Then, the check valve piece structure is automatically closed, and the concrete before solidification does not flow out from the portion. Further, by attaching the cap to the outer surface of the check valve piece structure, the check valve can be closed more reliably.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an opening and closing plug device for filling concrete in a bridge foundation according to the present invention will be described below with reference to FIGS. FIG. 1 is a vertical cross-sectional view in an exploded state, showing a box-shaped or cylindrical steel frame base frame 1 that is a base member of a bridge, and a diameter of the steel frame base frame 1 at the relatively lower portion side wall is about 1. A through hole 2 for filling of about 19 mm is bored, and a vent plug mounting hole 3 having a diameter of about 10 mm is bored on the side wall of the upper portion.

Reference numeral 4 is a filling opening / closing plug attached to the filling through hole 2, and the filling opening / closing plug 4 is an opening / closing plug body 5.
And a valve member 6 and a cap 7. The opening / closing plug body 5 formed of semi-rigid synthetic resin has a filling through hole 2 at the outer end of a cylindrical portion 51 inserted into the filling through hole 2.
A flange 52 for engaging with the cylindrical portion 51
Located at the inner end of the tongue-shaped baffle pieces 53, 53 divided into a plurality of pieces (six pieces in the embodiment) by radial cutting lines.
... is configured. On the outer periphery of the cylindrical portion under the flange 52, detent peripheral ribs 54 are formed at intervals corresponding to the plate thickness t of the steel frame foundation frame 1 to be used.
When is struck into the filling through hole 2, the peripheral rib 54 engages with the back surface of the steel frame base frame 1 at the position where it crosses over the filling through hole 2 to prevent the steel rib base frame 1 from coming off.

The valve body 6 is formed of synthetic rubber and has a disk shape in which the inside of the peripheral edge portion 61 bulges inward toward a spherical surface, and the inward bulging portion has a radial shape. The check valve pieces 62, 62 ... Are divided into a plurality of pieces (8 pieces in the embodiment) by cutting lines.

The cap 7 is formed of a semi-hard resin by integrally molding the mounting ring portion 71 and the cap portion 72 via a connecting piece 74 which constitutes a thin bending portion 73. The attachment ring portion 71 fits the peripheral edge portion 61 of the valve body 6 to the annular step portion 75, and also opens and closes the three locking pieces 76, 76, 76 that are evenly projected on the attachment ring portion 71. The opening / closing body 5 and the valve body 5 and the cap 7 are integrated with each other by engaging with the locking projections 55, 55, 55 protruding from the flange 52 of the body 5. Further, reference numeral 77 is a lid stopper engaging projection protruding from the connecting piece 74 at a position of 180 °, which is a thin portion 7 for bending.
3 is engaged with a locking hole 78 formed in the cap portion 72 folded back to the mounting ring 71 side to prevent opening of the plug.

Reference numeral 8 is a vent plug attached to the vent plug mounting hole 3, which is molded of semi-rigid synthetic resin and is provided at the outer end of the cylindrical portion 81 inserted into the vent plug mounting hole 3. An end plate that constitutes a flange 82 that engages with the mounting hole 3 and that is located at the outer end of the cylindrical portion 81 and is provided with a large number (7 in the embodiment) of ventilation small holes 84, 84 ... 83
It is made by molding. On the outer periphery of the cylindrical portion 81 below the flange 82, detent circumferential ribs 85 are formed at intervals corresponding to the plate thickness t of the steel frame foundation frame 1 to be used, and the vent plug 8 is driven into the vent plug mounting hole 2. At this time, the peripheral ribs 85 engage with the back surface of the steel foundation frame 1 in the plate thickness when passing over the hole to prevent the ribs from coming off.

When the concrete filling opening / closing plug device for the bridge foundation is used, the filling opening / closing plug 4 and the ventilation plug 8 are used by being fixedly mounted in the filling through hole 2 and the ventilation plug mounting hole 3, respectively. Reference numeral 9 in the figure denotes a reinforcing bar arranged in the steel frame base frame 1.

Check valve pieces 62, 62 of the filling opening / closing plug 4
The filling hose 10 is inserted into the steel-frame base frame 50 so as to push open the ... and the baffle pieces 53, 53.
0 through concrete a (In addition, "concrete
”Is the particle size of the mortar, cement, or aggregate.
Is small enough ready-mixed concrete. ) Is injected and filled by a pumping device (not shown). Due to the filling of the concrete a, the internal air is allowed to pass through the vent holes 84 of the vent plug 8,
When it is extruded from 84 ... And the concrete a is filled up to the part, the concrete liquid oozes out from the ventilation small holes 84, 84 ... and it is possible to confirm the completion of filling.

After filling, when the filling hose 10 is pulled out,
The baffle pieces 53, 53 ... And the check valve pieces 62, 62 ... Are in a closed state, and the concrete a before solidification does not flow out. Further, by bending the cap portion 72 from the bending thin portion 73 formed on the cap 7 to the outer surface of the check valve pieces 62, 62, ... It just ends the work and waits for the solidification of the concrete a. Then, the filling opening / closing plug 4 and the ventilation plug 8 are to be left attached to the steel frame 1 even after the concrete a is solidified.

[0015]

As described above, in the concrete filling opening / closing plug device in the bridge foundation according to the present invention, the check valve structure is configured in the filling opening / closing plug fixed to the through hole formed in the steel frame. Therefore, when the concrete is completely filled and the filling hose is pulled out, the valve structure is closed and can be left as it is. Therefore, the work such as fixing and closing of the hose and cutting and removing after solidification, which were performed by the conventional construction method, is eliminated, and it has the characteristic that the workability is good, and the practical effect after implementing the present invention is Extremely large.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view in an exploded state showing an embodiment of an opening and closing plug device for filling concrete in a bridge foundation according to the present invention.

FIG. 2 is a view on arrow II in FIG.

FIG. 3 is a view on arrow III in FIG.

FIG. 4 is an arrow IV view in FIG.

5 is a view on arrow V in FIG. 1. FIG.

FIG. 6 is a longitudinal cross-sectional view of a main part showing a conventional concrete opening / closing plug device in a bridge foundation.

[Explanation of symbols]

 1 Steel Foundation Frame 2 Filling Through Hole 3 Venting Plug Mounting Hole 4 Filling Opening / Closing Plug 5 Opening / Closing Main Body 51 Cylindrical Part 53 Baffle Piece 54 Circumferential Rib 6 Valve Member 62 Check Valve Piece 7 Cap 71 Mounting Ring Part 72 Cap Part 73 Thin wall for bending a Concrete

Claims (3)

[Scope of utility model registration request] 1. A cylindrical member which is inserted and fixed to a filling through hole formed in a box-shaped or cylindrical steel frame base frame, and a disc-shaped member made of synthetic rubber in the cylindrical passage. And a plug device for filling concrete in a bridge foundation, which comprises a non-return valve structure consisting of and a cap which is fitted and engaged with an outer end portion of the cylindrical body. 2. The check valve structure comprises a disk-shaped bulging portion in which the inside of the peripheral edge portion bulges inward toward a spherical surface.
The opening / closing device for concrete filling in a bridge foundation according to claim 1, wherein the device is divided into a plurality of parts by radial cutting lines. 3. A cylindrical ventilation member which is inserted into and fixed to a ventilation plug mounting hole formed in a portion above the filling through hole formed in a reinforcing bar base frame, and which has a ventilation small hole. The opening and closing plug device for concrete filling in a bridge foundation according to claim 1, wherein a plug is added.