JPH0682111U - Opening and closing plug device for concrete filling in bridge foundation - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a new construction method that can be attached to a steel frame foundation with one-touch, prevents the concrete from flowing out by simply capping the plug body after concrete filling, and omits post-treatment. [Structure] A cylindrical filling opening / closing plug 4 is inserted into a filling through hole 2 formed in a box-shaped or cylindrical steel frame base frame 1. The valve body 6 made of a disc-shaped member made of synthetic rubber is assembled to the cylindrical portion 51 to form the check valve pieces 62, 62, .... Further, the cap 7 is integrally configured so as to engage with the outer end of the cylindrical portion 51.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an opening / closing plug device for filling concrete in a bridge foundation, which is related to an improvement in a plug structure used when pouring and filling concrete into the bridge foundation.

[0002]

[Prior art]

 As a basic structure of a bridge, conventionally, 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 filled and solidified with concrete 92. What was made to be used. When the concrete 92 is filled, a filling through hole 93 having a diameter of about 20 mm is formed on the side wall of the steel base frame 90 at a relatively lower portion, and an air vent hole 94 having an appropriate diameter is formed on the side wall of the upper portion. In general, a method of inserting a vinyl hose 95 into the inside of the steel frame 90 through the filling through hole 93 and pouring and filling concrete 92 by a pumping device through the vinyl hose 95 is generally adopted. It was being done.

[0003]

[Problems to be solved by the device]

 However, according to the conventional method described above, after the vinyl hose 95 is inserted from the filling through hole 93 and the concrete 92 is pumped and injected, the vinyl hose 95 is closed by the hose band 96 and the concrete 92 is solidified. Since the vinyl hose 95 is cut and removed after waiting, the working time cannot be shortened sufficiently even if high speed solidifying concrete is used because of the time required for solidifying the concrete. Moreover, there was a problem that the work was 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 by one-touch, and the concrete can be fixed by simply capping the plug body after filling with concrete. It is an object of the present invention to provide an opening / closing plug device for filling concrete in a bridge foundation with a new structure that prevents the outflow of concrete and does not require post-treatment.

[0005]

[Means for Solving the Problems]

 The opening and closing plug device for concrete filling in a bridge foundation according to the present invention comprises a cylindrical member which is inserted and fixed to a filling through hole formed in a box-shaped or cylindrical steel-frame base frame. The gist of the present invention is that a check valve structure made of a disc-shaped member made of synthetic rubber is formed in the passage, and a cap that is fitted and engaged with the outer end of the cylindrical body is formed.

[0006]

[Action]

 Therefore, when the filling hose is inserted into the steel foundation frame so as to push open the check valve piece structure, the concrete is injected and filled through the filling hose by the pumping device, and then the filling hose is pulled out, the reverse The stop valve structure automatically closes, and the concrete before solidification does not flow out from this part. Further, by attaching the cap to the outer surface of the check valve piece structure, the check valve can be closed more reliably.

[0007]

【Example】

 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. 1 to 5. FIG. 1 shows a longitudinal sectional view in an exploded state, showing a box-shaped or cylindrical steel-frame base frame 1 that is a foundation member of a bridge, and a diameter of the steel-frame base frame 1 on the side wall of a relatively lower part is about 1. A through hole 2 for filling of about 19 mm is bored, and a vent plug attachment hole 3 having a diameter of about 10 mm is bored on the side wall of the upper portion.

Reference numeral 4 denotes a filling opening / closing plug attached to the filling through hole 2, and the filling opening / closing plug 4 includes an opening / closing plug body 5, a valve member 6, and a cap 7. The opening / closing plug body 5 formed of a semi-hard synthetic resin has a flange 52 that engages with the filling through hole 2 at the outer end of a cylindrical portion 51 that is inserted into the filling through hole 2. Located at the inner end of the cylindrical portion 51, the tongue-shaped baffle pieces 53, 53 ... Are divided into a plurality of pieces (sixteen in the embodiment) by radial cutting lines. A detent peripheral rib 54 is formed on the outer circumference of the cylindrical portion under the flange 52 at a distance corresponding to the plate thickness t of the steel base frame 1 to be used, and the opening / closing plug body 4 is tapped into the filling through hole 2. At this time, the peripheral ribs 54 are engaged with the back surface of the steel foundation frame 1 in the plate thickness when passing over the filling through hole 2 to prevent the peripheral ribs 54 from coming off.

The valve body 6 is formed of synthetic rubber and has a disk shape in which the inner side 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 a cut line.

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 that constitutes a thin bending portion 73. The mounting ring portion 71 fits the peripheral edge portion 61 of the valve body 6 to the annular step portion 75, and opens and closes the three locking pieces 76, 76, 76 that are equally projected on the mounting ring portion 71. The opening / closing plug body 5, the valve body 5 and the cap 7 are integrated by engaging with the locking projections 55, 55, 55 protruding from the flange 52 of the plug body 5. Reference numeral 77 is a lid stopper engaging projection that is provided at a 180 ° position with the connecting piece 74, and is a locking hole 78 formed in the cap portion 72 that is folded back from the thin bending portion 73 to the mounting ring 71 side. It comes to engage with and prevent opening.

Reference numeral 8 is a vent plug attached to the vent plug mounting hole 3, which is molded of semi-hard synthetic resin and is provided at the outer end of the cylindrical portion 81 inserted into the vent plug mounting hole 3. A flange 82 that engages with the vent plug mounting hole 3 is formed, and a large number (7 in the embodiment) of ventilation small holes 84, 84 are formed at the outer end of the cylindrical portion 81. The end plate 83 provided is molded. On the outer periphery of the cylindrical portion 81 below the flange 82, detent peripheral ribs 85 are formed at intervals corresponding to the plate thickness t of the steel frame foundation frame 1 to be used, and the ventilation plug 8 is attached to the ventilation plug mounting hole 2. When struck in, the peripheral rib 85 engages with the back surface of the steel frame 1 of the plate thickness when passing over the hole to prevent the rib from coming off.

When using the concrete filling opening / closing plug device for the above-mentioned bridge foundation, the filling opening / closing plug 4 and the ventilation plug 8 are placed and fixed in the filling through hole 2 and the ventilation plug mounting hole 3, respectively. Reference numeral 9 in the drawing denotes a reinforcing bar arranged in the steel frame foundation frame 1.

The filling hose 10 is inserted into the steel base frame 50 so as to push open the check valve pieces 62, 62 ... And the baffle pieces 53, 53 of the filling opening / closing plug 4, and through the filling hose 10. The concrete a is poured and filled by a pumping device (not shown). By the filling of the concrete a, the internal air is pushed out from the ventilation small holes 84, 84 ... Of the ventilation plug 8, and when the concrete a is filled up to the site, the concrete liquid is stained from the ventilation small holes 84, 84. You can check it out by filling it out.

When the filling hose 10 is pulled out after the filling, the baffle pieces 53, 53 ... And the check valve pieces 62.sub.1, 62 .... are closed, and the concrete a before solidification does not flow out. In addition, the cap portion 72 is bent from the thin-walled bending portion 73 formed on the cap 7 to the outer surface of the check valve pieces 62, 62, and the locking hole 78 is engaged with the lid locking engagement projection 77. Then, all the work is completed, and only the solidification of the concrete a is waited for. 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]

[Effect of device]

 As described above, in the concrete filling opening / closing plug device for the bridge foundation according to the present invention, the check valve structure is formed in the filling opening / closing plug fixed to the through hole formed in the steel foundation frame. When the filling of the concrete is completed and the filling hose is pulled out, the valve structure closes 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, are eliminated, and it has the characteristic that the work is good, and the practical effect after implementing the present invention. Is extremely large.

[Submission date] June 10, 1993

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[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 What is filled and solidified with concrete 92 is used. When the concrete 92 is filled, a filling through hole 93 having a diameter of about 20 mm is formed in the side wall of the steel 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. In general, a method of inserting a vinyl hose 95 into the inside of the steel frame 90 through the filling through hole 93 and injecting and filling concrete 92 with a pressure feeding device through the vinyl hose 95 is generally used. It was taken. (Note that intends cloud and "concrete" are cement, mortar, or course that the passage available-degree small enough crushed gravel in such a vinyl hose 95 is fresh concrete, referred to in general with the aggregate It is.)

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 00013

[Correction method] Change

[Correction content]

[00013] The filling hose 10 is inserted into the steel base frame 50 so as to push open the check valve pieces 62, 62 ... And the baffle pieces 53, 53 ... Of the filling opening / closing plug 4, and the filling hose 10 is inserted. through concrete a by (here, the "concrete" is, mortar, say cement, or particle size sufficiently small fresh concrete aggregate, the.) injecting filled with pumping device (not shown). Due to the filling of the concrete a, the internal air is pushed out from the ventilation small holes 84, 84 ... Of the ventilation plug 8, and when the concrete a is filled up to that portion, the concrete liquid oozes out from the ventilation small holes 84, 84. The completion of filling can be confirmed.

[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.