JP3020050B2 - Concrete filling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete filling method for suitably filling concrete in a space enclosed by steel plates or the like in the construction of a steel-concrete composite structure such as a sandwich composite slab or a solid caisson. .

[0002]

2. Description of the Related Art Conventionally, as a method of filling concrete in an enclosed space, there is a method of improving the filling property by depressurizing the enclosed space with a pump, as disclosed in Japanese Patent Publication No. 5-62173 and Japanese Patent Laid-Open No. 1-142127. It is disclosed in gazettes and the like. In this method, for example, as shown in FIG. 6, the installation port 3, the confirmation ports 5,... Are provided so as to be connected to the internal space of the steel structure 1. , And exhaust air or the like from the confirmation ports 5, 5,.... Then, the worker visually checks the state of filling of the concrete from the check ports 5, 5,..., As shown in FIG. 7, when the voids 7a, 7a,. A pump 9 is attached to the port 5 to suck and decompress the air and the like in the gap 7a and draw the concrete 7 to a corner or the like so as to fill the corner or the like as shown in FIG. .

[0003]

As described above, when the concrete 7 in the closed space is sucked and moved by the pump 9, as shown in FIG. 9, the voids 7a such as corners are eliminated, as shown in FIG. In some cases, a new void 7b may be generated at another location, and when the newly generated void 7b is generated at a location away from the confirmation port 5 where the pump 9 is attached,
There is a problem that refilling is not possible, and in particular, when a casting area is large, there is a problem that it is necessary to provide a large number of casting holes 3 and confirmation holes 5.

The present invention has been made in view of such a conventional problem,
It is an object of the present invention to provide a concrete filling method capable of suitably filling concrete in a closed space.

[0005]

SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
A cylindrical pouring port for injecting concrete and a discharge port for discharging air and the like are connected to the closed concrete filling space, and the discharge port detects the upper surface of the concrete.
A concrete sensor is attached, concrete is poured into the concrete filling space from the casting hole, concrete is filled in the casting hole, and then the upper surface of the concrete in the casting hole is ground.
Formed of a flexible material such as
By applying pressure through the cushion material
The concrete material is brought into close contact with the inner surface of the
Pressurize the top surface, the height of the concrete top surface in the outlet
Is detected by the sensor to be equal to or greater than a predetermined value.
In this case, the pressurization is stopped.

[0006] Incidentally, fitted with a sensor for detecting the concrete upper surface to hit設口, the height of the concrete upper surface of the punching in設口detected by the sensor is preferably stopped becomes the pressure below a predetermined value.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes a steel structure made of a steel plate or the like, in which a closed concrete filling space is formed. It constitutes a composite structure.

At the center of the upper surface of the steel structure 1, a cylindrical pouring opening 3 is erected to communicate with the concrete filling space. , Sensors 13 for detecting the upper surface height of the concrete 7,...
Are mounted at predetermined heights. In addition, cylindrical confirmation ports 5, 5,... Are provided at the upper corners of the steel structure 1.
But, it is erected in communication with the concrete filling space,
As shown in FIG. 5, sensors 15, 15,... For detecting the height of the upper surface of the concrete 7 are provided on the inner peripheral surfaces of the confirmation ports 5, 5,.
Are attached at predetermined heights.

In FIGS. 1 and 2, reference numeral 17 denotes a pneumatic cushion material, and reference numeral 19 denotes a weight. The pneumatic cushion material 17 is formed of a flexible material such as rubber, and air is sealed therein. As shown in FIG. 3, the cushion material 17 is inserted into the casting hole 3 and When the weight 19 is loaded from above, the cushion material 17 expands to the side and closely adheres to the inner peripheral surface of the casting hole 3, and presses down the concrete 7 in the casting hole 3 while preventing the concrete 7 from leaking. It has become.

In order to fill the concrete filling space inside the steel structure 1 with the concrete 7, first, the concrete 7 is poured from the pouring opening 3, and as shown in FIG. Next, the concrete 7 is filled up to a predetermined height. At this time, the concrete 7 in the concrete filling space flows by its own weight, but voids 7a, 7a,...

Next, the cushion member 17 is inserted into the casting hole 3 and a weight 19 is loaded from above the cushion member 17 as shown in FIG. The concrete 7 is pressed down. In addition, you may load with a hydraulic jack etc. other than the weight 19.

Then, the concrete 7 in the concrete filling space flows further to the corners and the like, and the confirmation ports 5, 5,...
Air is discharged from the air gaps 7a, 7a,.
As shown in FIG. 2, the concrete 7 is densely filled up to the corners. At this time, it is possible to suitably fill the closed space without creating a new space in another place unlike the method of suctioning with a conventional pump.

As described above, the voids 7a, 7a,.
Are removed, the concrete 7 rises in the confirmation ports 5, 5,..., And as shown in FIG.
The concrete 7 is detected through 5..., And when the height of the upper surface of the concrete 7 in the confirmation opening 5 becomes a predetermined value or more, the pressurization in the casting opening 3 by the weight 19 or the like is stopped.
That is, the concrete 7 is mechanically irrespective of the worker's visual observation.
Can be checked. Therefore, construction management such as the amount of concrete 7 to be poured can be suitably performed,
It can be applied to construction of deep water structures.

When the concrete 7 is moved to a corner or the like, the excess concrete 7 in the casting hole 3 descends, so that a new void is not formed below the casting hole 3. As shown in FIG. 4, when the concrete 7 is detected via the sensors 13, 13,... Then, the pressurization in the casting port 3 is stopped.

[0015]

As described above, in the concrete filling method according to the present invention, a cylindrical casting port and a discharge port for discharging air and the like are provided by connecting to a closed concrete filling space. Inject concrete into the concrete filling space from the spout, fill concrete in the pouring mouth, press down the concrete upper surface in the pouring mouth, and press down the concrete filling space from a relatively small number of spouts. Concrete can be suitably filled in the space without forming a void.

Further, by loading the concrete upper surface in the casting hole through the cushion material, the concrete upper surface in the casting hole can be suitably pressed and pushed down.

In addition, since a sensor is attached to the casting hole or the discharge port to detect the upper surface of the concrete, it is not necessary for the worker to visually confirm the upper surface of the concrete. When the height of the concrete becomes equal to or less than a predetermined value or more than a predetermined value, the pressurization is stopped, and the concrete filling operation can be mechanized. Therefore, the construction management and the like can be suitably performed. It can also be applied to construction of objects.

[Brief description of the drawings]

FIG. 1 is an example of an embodiment of a concrete filling method according to the present invention, and is a vertical sectional view showing a state before pressurization by a weight.

FIG. 2 is a vertical sectional view showing a state after pressurization by the weight of FIG. 1;

FIG. 3 is an enlarged view of a weight and a cushion member in FIG. 1;

FIG. 4 is an enlarged view of a casting port portion in FIG.

FIG. 5 is an enlarged view of a confirmation opening portion in FIG.

FIG. 6 is an example of a conventional concrete filling method,
It is a vertical sectional view showing the state during concrete pouring.

FIG. 7 is a vertical sectional view showing a state before suction by the pump of FIG. 6;

FIG. 8 is a vertical sectional view showing a state after suction by the pump in FIG. 7;

FIG. 9 is an enlarged view showing a case where a new gap is generated in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel structure 3 Casting port 5 Confirmation port (discharge port) 7 Concrete 7a Void portion 13 Sensor 15 Sensor 17 Cushion material 19 Weight

Claims (2)

(57) [Claims] 1. A connection to the sealed concrete filling space of
So was provided a cylindrical punch設口of injecting concrete, an outlet for discharging the air or the like, concrete discharge port
Mounting a sensor for detecting the top, the concrete is injected from the punching設口to the concrete-filled space, after weld reinforcement the concrete ball striking設口, concrete in ball striking設口
The upper surface of the sheet is formed of a flexible material such as rubber,
Pressurized through cushion material filled with air
Thereby, the cushion material is brought into close contact with the inner surface of the casting mouth, and
Pressurize the concrete upper surface and remove concrete in the outlet.
That the height of the top surface of the
Stopping the pressurization by detecting
The method of filling concrete as a feature . 2. A sensor for detecting the upper surface of concrete at a pouring opening.
And the setting port detected by the sensor
When the height of the concrete upper surface in the building falls below a predetermined value, pressurization
The concrete filling method according to claim 1, wherein the method is stopped .