KR20180023149A - Slip Form with a Pressure sensor, Concrete Cast-in Apparatus Using Thereof and Method Thereof - Google Patents

Abstract

The present invention relates to a slip form, and more specifically relates to the slip form having a pressure sensor, a concrete application apparatus using the same, and a concrete application method thereof. To this end, the concrete application apparatus using the slip form having a pressure sensor comprises: the slip form (300) installed with a plurality of pressure sensors (130) on one surface thereof and measuring pressure of concrete; an automatic stamping apparatus (250) installed at one side of the slip form (300); and a control portion (200) controlling operation of the automatic stamping apparatus (250) based on an output signal of the pressure sensor (130).

Description

Technical Field [0001] The present invention relates to a slip foam having a pressure sensor, a concrete pouring device using the slip foam,

The present invention relates to a slip foam, and more particularly, to a slip foam having a pressure sensor, a concrete pouring apparatus using the slip foam, and a method thereof.

A slip form is used to form a structure without a construction joint by lifting the foam when the concrete starts to harden. The construction of the slip foam is carried out continuously for 24 hours, and the concrete is continuously poured into the slip foam (about 1m height) to the 80cm height in four stages. The concrete layer once poured is about 20cm, and the concrete in the lower part which is poured first is demolded from the slip form after securing the hardness enough to support the deformation due to the weight of concrete just before the puddle.

FIG. 1 is a plan view of a conventional caisson 20 and a slip foam 30, and FIG. 2 is a partial perspective view of the slip foam 30 shown in FIG. As shown in FIG. 1 and FIG. 2, when a caisson (height: 20 m to 30 m), which is a large civil engineering structure, is cured in slip form, there are the following problems at the construction site.

First, when placing concrete on a slip form, it takes a lot of time to put concrete because it is repeatedly carried by bucket or hoist.

In addition, when pouring concrete, it is ideal that the upper surface of the concrete maintains a flat and level surface uniformly. However, in the case of a facade such as a caisson, the upper surface of the concrete is difficult to maintain a flat surface. In addition, it is difficult to place the concrete in a horizontal position because the cross section of the concrete is far away. This is also attributed to the lack of fluidity of ordinary concrete.

Also, in the case of compaction of concrete, ordinary concrete was not able to use an automatic compaction device due to lack of fluidity. Therefore, depending on the manpower, the manpower was forced to compromise, and the degree of compaction and completion of compaction were determined according to the empirical judgment of the worker. In the case of large caissons, the quality of the concrete deteriorates when the compaction is partially lacking.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a slip form having a pressure sensor capable of performing a concrete pouring, And a concrete casting apparatus using the same and a method therefor.

A second object of the present invention is to provide a slip foam having a pressure sensor which is not biased when the concrete is laid over a large area such as a caisson, and whose upper surface can maintain a flat and horizontal position, and a concrete pouring apparatus using the slip foam and a method thereof .

A third object of the present invention is to provide a slip foam having a pressure sensor for uniformly compaction of concrete through a pressure sensor, a concrete casting apparatus using the slip foam, and a method therefor.

In order to achieve the above object, the present invention provides a slip foam (300), comprising a pressure sensor (130) installed on one side of a slip foam (300) to measure pressure of concrete A slip foam having a sensor is provided.

Further, a plurality of pressure sensors 130 may be arranged in a straight line.

In addition, the pressure sensor 130 may be installed on the curing surface 350 of the slip foam 300.

Further, it is preferable that an automatic compaction apparatus 250 is installed at one side of the slip foam 300.

According to another aspect of the present invention, there is provided a slip foam (300) having a plurality of pressure sensors (130) installed on a surface thereof to measure pressure of concrete. An automatic compaction apparatus 250 installed on one side of the slip foam 300; And a control unit (200) for controlling the operation of the automatic compaction apparatus (250) based on the output signal of the pressure sensor (130). .

The controller 200 further includes a concrete casting unit 260 for casting concrete on the slip foam 300. The controller 200 controls the operation of the concrete casting unit 260 based on the output signal of the pressure sensor 130 .

The control unit 200 operates the automatic compaction unit 250 until the output signal of the pressure sensors 130 provided on the slip foam 300 is equal to or less than the permissible pressure difference.

The apparatus further includes a slim foam lifting unit (100) controlled by the control unit (200) and lifting the slip foam (300).

Also, concrete is high dynamic concrete.

Further, the plurality of pressure sensors 130 are installed at equal intervals along the gravity direction.

The above-described object of the present invention can be achieved by a method of setting a slip form (300) provided with a plurality of pressure sensors (130) as another category (S100); (S120) while the pressure sensor 130 measures the pressure (S130), and the concrete pouring unit 260 pours concrete into the slip foam 300; (S125) the controller 200 determines whether the output signal of the pressure sensors 130 installed on the slip foam 300 is an allowable pressure level; Performing a concrete pouring step (S120) if the permissible pressure size is not satisfied; (S140) while the pressure sensor 130 measures the pressure (S130), and the automatic compaction apparatus 250 adjusts the concrete (S140); The control unit 200 determines whether the output signal of the pressure sensors 130 installed on the slip foams 310 and 320 is equal to or less than the allowable pressure difference. If the allowable pressure difference is exceeded, the concrete compaction step (S140) is performed, and if the difference is less than the allowable pressure difference (S180), the concrete is cured. And a step S200 of lifting the slip foam 300 by the slip foam lifting part 100. The method of installing a concrete slip foam having a pressure sensor according to the present invention can be accomplished by the following method.

Yet another embodiment of the present invention includes the steps of setting a slip foam 300 equipped with a plurality of pressure sensors 130 (S100); When the pressure sensor 130 measures the pressure (S130), the concrete pouring unit 260 pours the concrete into the slip foam 300 (S120); When the pressure sensor 130 measures the pressure (S130), the automatic compaction apparatus 250 adjusts the concrete (S140); The control unit 200 determines whether the output signal of the pressure sensors 130 installed on the slip foams 310 and 320 is equal to or less than the allowable pressure difference. If the allowable pressure difference is exceeded, the concrete compaction step (S140) is performed, and if the difference is less than the allowable pressure difference (S180), the concrete is cured. And a step S200 of lifting the slip foam 300 by the slip foam lifting part 100. The method of installing a concrete slip foam having a pressure sensor according to the present invention can be accomplished by the following method.

According to one embodiment of the present invention, concrete placement, compaction, and lifting processes can be performed on a scientific basis according to control of a computer. Therefore, there is an effect such as improvement of quality, shortening of air, and prevention of safety accident for high work.

In addition, in the case of concrete pouring, it is possible to judge whether the pouring is performed by quantitative data.

In case of compaction of concrete, uniform compaction of concrete is achieved through pressure sensor. Especially, using fluidized concrete and automatic compaction equipment, it is possible to realize automatic compaction without depending on manpower. As a result, caissons and concrete structures of constant quality can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further understand the technical idea of the invention. And should not be construed as interpreted.
1 is a plan view of a conventional caisson 20 and a slip foam 30,
FIG. 2 is a partial perspective view of the slip foam 30 shown in FIG. 1,
3 is a plan view of a caisson provided with a slip foam having a pressure sensor according to an embodiment of the present invention,
4 is a side cross-sectional view of a slip foam having a pressure sensor according to an embodiment of the present invention,
5 is a front view showing a state where a slip foam is installed in the slip foam lifting part 100,
6A is a cross-sectional view schematically showing the non-uniform pressure issued by the first and second slip foams 310 and 320 and the sloped concrete 120 along the lateral direction of the slip foam,
FIG. 6B is a cross-sectional view schematically showing the non-uniform pressure issued by the biased concrete 120 in FIG. 5 along the longitudinal direction of the first slip foam 310,
FIG. 7 is a cross-sectional view schematically depicting uniform pressures issued by first and second slip foams 310, 320 and flat concrete 120 of FIG. 5,
8 is a schematic block diagram of a concrete pouring apparatus using a slip foam having a pressure sensor according to an embodiment of the present invention.
FIG. 9 is a flowchart of a concrete pouring method using a slip foam having a pressure sensor according to a first embodiment of the present invention,
10 is a flowchart of a concrete pouring method using a slip foam having a pressure sensor according to a second embodiment of the present invention.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and are herein described in detail.

It is noted that the terms "comprises" or "having" in this application are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Configuration of Embodiment

3 is a top view of a caisson with a slip foam having a pressure sensor according to one embodiment of the present invention. As shown in FIG. 3, a pressure sensor 130 is installed on the slip foam 300 to cure the caisson 200 having a height of about 20 m to about 30 m with the slip foam 300. The pressure sensor 130 may be provided for every slip foam 300. In the case of a rectangular caisson 200, it is preferable that the pressure sensor 130 is installed in at least four slip foams 300 in each corner area (four in total). This is to keep the height of concrete piling constant for every lifting.

4 is a side cross-sectional view of a slip foam having a pressure sensor in accordance with one embodiment of the present invention. As shown in Figure 4, the curing surface 350 is generally smooth to the area where the concrete contacts. The opposite back surface 370 is surrounded by the frame 330 for rigidity and has two H-beams 390 in the transverse direction (and / or longitudinal direction). The height of the slip foam 300 may be approximately 1 m, but various sizes are possible according to the design specifications.

The pressure sensor 130 is for sensing the pressure generated by the concrete. Each of the pressure sensors 130 may be provided to one slip foam 300, or a plurality of pressure sensors 130 may be provided to one slip foam 300. When a plurality of pressure sensors 130 are provided, it is preferable that three to five pressure sensors 130 are installed at regular intervals in the gravity direction. In order to obtain a higher pressure resolution, the number of pressure sensors 130 may be increased and the interval may be reduced. Each of the pressure sensors 130 is connected to the control unit 200, and wiring (not shown) of the pressure sensor 130 is a matter of convenience to those skilled in the art, and therefore, illustration and description thereof are omitted.

Preferably, the automatic compaction apparatus 250 is mounted on the H-beam 390 or the frame 330 for rigidity. The automatic compaction apparatus 250 may be installed in each slip foam 300, or may be installed one by one for two to three slip foams 300. A typical example of the automatic compaction device 250 is a form vibrator. In order to facilitate automatic compaction by the foam vibrator, the concrete is preferably fluidized concrete or highly dense concrete.

The fluidized or highly dense concrete refers to concrete with higher fluidity than ordinary concrete. For this purpose, a high proportion of fluidizing agent is added compared to ordinary concrete. As an example of high-flowable concrete, it is recommended to use 250-280 kg of general cement, 80-110 kg of fly ash, 170-185 of water, 310-340 kg of fine aggregate and coarse aggregate, 0.2-0.4% By weight of a high-performance AE water reducing agent of 1.0 to 2.0% by weight based on the weight of the binder and 3 to 8% by weight of the binder.

Examples of another high dynamic range concrete include 36 to 44% of cement, 18 to 22% of flyash, 27 to 47% of blast furnace slag powder, 9 to 11% of limestone powder, and the powder of fly ash and blast- Lt; 2 > / g.

An example of another high dynamic range concrete is a process of mixing 0.1 ~ 0.5% of admixture containing 20 ~ 25% of cement, 5 ~ 10% of water, 65 ~ 74.9% of aggregate, The cement composition contains 36 to 44% of cement, 18 to 22% of flyash, 27 to 37% of blast furnace slag, and 9 to 11% of limestone powder as a specific amount percentage.

5 is a front view showing a state in which a slip foam is installed in the slip foam lifting part 100. FIG. As shown in FIG. 5, the first and second slip foams 310 and 320 are set on the slip-foam lifting unit 100 with a gap maintained therebetween, and the concrete 120 is poured therebetween. The configuration of the slip-foam lifting unit 100 is a well-known structure, and a detailed description thereof will be omitted.

FIG. 6A is a cross-sectional view schematically showing the uneven pressure issued by the first and second slip foams 310 and 320 and the sloped concrete 120 along the lateral direction of the slip foam, FIG. 6B is a cross- Sectional view schematically showing the non-uniform pressure generated by the biased concrete 120 along the longitudinal direction of the first slip foam 310. As shown in Fig. As shown in FIGS. 6A and 6B, when the concrete 120 is initially laid, the state as shown in FIGS. 6A and 6B can be obtained. That is, the upper surface of the concrete 120 between the first and second slip foams 310 and 320 is not constant, but has a height difference and is deflected.

As shown in FIGS. 6A and 6B, the pressure applied to the slip foam varies due to the difference in height of the concrete 120. For example, the first slip foam 310 is subjected to high pressure due to the biased concrete 120 and is diagrammatically represented by the first pressure distribution 150. On the contrary, the second slip foam 320 is subjected to a relatively low pressure due to the low-formed concrete 120, and this is schematically indicated by the second pressure distribution 160.

Since the interval between the pressure sensors 130 is already known, the first and second pressure distributions 150 and 160 can be calculated by the controller 200 by linearly interpolating the output values of the respective pressure sensors 130.

FIG. 7 is a cross-sectional view diagrammatically illustrating the uniform pressures issued by the first and second slip foams 310, 320 and flat concrete 120 of FIG. As shown in FIG. 7, when a predetermined amount of concrete 120 is laid and appropriately compacted, the pressure distributions of the first and second slip foams 310 and 320 are substantially the same as shown in FIG. Through the pressure distribution, the controller 200 can determine that a predetermined amount of the concrete 120 has been laid and appropriately plastered.

8 is a schematic block diagram of a concrete pouring apparatus using a slip foam having a pressure sensor according to an embodiment of the present invention. 8, each of the plurality of slip foams 300 is provided with a plurality of pressure sensors 130, and output signals of the respective pressure sensors 130 are connected to the controller 200.

Each of the slip foams 300 is provided with an automatic compaction unit 250 and the automatic compaction unit 250 is connected to the control unit 200 and the compaction control unit 140.

The control unit 200 may be implemented by a notebook computer, a personal computer, or the like.

The concrete placement unit 260 is connected to the control unit 200 and is composed of a concrete pump, a concrete distributor, and a CPB (Concrete Placing Boom) for rapid and quantitative placement.

The compaction control unit 140 is connected to the control unit 200 and is a driving circuit unit for driving the respective automatic compaction apparatuses 250.

The slip form lifting unit 100 is connected to the control unit 200. When the control unit 200 determines a lifting time of the slip form according to the degree of curing of the concrete or a lifting command is inputted by the operator, To lift it up to a predetermined height, and then perform resetting.

The network unit 270 is configured to enable wire / wireless bi-directional data communication between the control unit 200 and an external device (e.g., mobile 280, server, etc.) by being connected to the control unit 200. Such a network unit 270 is typically the Internet, LAN, intranet, mobile communication (e.g., 3G, 4G, Wi-Fi, etc.). The mobile 280 is representative of a mobile communication terminal (e.g., a cell phone, a smart phone, a tablet, etc.) of a field worker.

1st Example  action

Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings.

9 is a flowchart of a concrete pouring method using a slip foam having a pressure sensor according to a first embodiment of the present invention. As shown in FIG. 9, first, a slip foam 300 having a plurality of pressure sensors 130 is set to manufacture the caisson 200 (S100). At this time, the slip foam 300 equipped with the pressure sensor 130 is set so as to be separated as far as possible so that the pressure difference becomes large. Each of the pressure sensors 130 is also initialized.

Next, while the pressure sensor 130 measures the pressure (S130), the concrete pouring unit 260 places the concrete in the slip foam 300 (S120). As the placing process progresses, the water level of the concrete 120 rises and accordingly the output signal of the pressure sensor 130 also increases.

The control unit 200 determines in real time whether the output signal of the pressure sensors 130 installed in the slip foam 300 is the allowable pressure level (S125). If the allowable pressure level is not reached, it is determined that a predetermined amount of concrete has not been poured yet, and the concrete pouring step (S120) is repeatedly performed. When the output signal of the pressure sensors 130 reaches the permissible pressure magnitude, it is determined that the concrete has been put in a quantity and the installation process is terminated.

Then, while the pressure sensor 130 measures the pressure (S130), the automatic compaction apparatus 250 consolidates the concrete (S140). This is because the automatic compaction apparatus 250 generates vibration and transmits the vibration to the slip form 300 according to the driving of the compaction control unit 140. As a result, the bubbles contained in the concrete are removed and the inside of the concrete becomes uniform.

Next, the control unit 200 determines whether the output signals of the pressure sensors 130 installed on the slip foams 310 and 320 are equal to or less than the allowable pressure difference (S160).

If the allowable pressure difference is exceeded as shown in FIGS. 6A and 6B, it is determined that the compaction is insufficient and the concrete compaction step S140 is repeated. If the difference is less than the allowable pressure difference as shown in FIG. 7, And the concrete is cured (S180).

Then, the slip form lifting unit 100 lifts the slip form 300 according to a command from the control unit 100 or the operator (S200).

In the first embodiment, the permissible pressure magnitude and permissible pressure difference can be appropriately selected in consideration of the size and spacing of the slip foam, the size of the caisson, and the like.

Through this process, concrete curing of one layer is completed, and curing of the caisson in the height direction can be continued by repeating the above process.

Second Example  action

Hereinafter, a second embodiment of the present invention will be described with reference to the accompanying drawings.

10 is a flowchart of a concrete pouring method using a slip foam having a pressure sensor according to a second embodiment of the present invention. As shown in FIG. 10, first, a slip foam 300 having a plurality of pressure sensors 130 is set to fabricate the caisson 200 (S100). At this time, the slip foam 300 equipped with the pressure sensor 130 is set so as to be separated as far as possible so that the pressure difference becomes large. Each of the pressure sensors 130 is also initialized.

Next, while the pressure sensor 130 measures the pressure (S130), the concrete pouring unit 260 places the concrete in the slip foam 300 (S120). As the placing process progresses, the water level of the concrete 120 rises and accordingly the output signal of the pressure sensor 130 also increases.

Then, while the pressure sensor 130 measures the pressure (S130), the automatic compaction apparatus 250 consolidates the concrete (S140). This is because the automatic compaction apparatus 250 generates vibration and transmits the vibration to the slip form 300 according to the driving of the compaction control unit 140. As a result, the bubbles contained in the concrete are removed and the inside of the concrete becomes uniform.

Next, the control unit 200 determines whether the output signals of the pressure sensors 130 installed on the slip foams 310 and 320 are equal to or less than the allowable pressure difference (S160).

If the allowable pressure difference is exceeded as shown in FIGS. 6A and 6B, it is determined that the compaction is insufficient and the concrete compaction step S140 is repeated. If the difference is less than the allowable pressure difference as shown in FIG. 7, And the concrete is cured (S180).

Then, the slip form lifting unit 100 lifts the slip form 300 according to a command from the control unit 100 or the operator (S200).

By repeating the above-mentioned process, the curing of the concrete in the height direction can be continued.

The network unit 270 transmits operation information such as an output signal of the pressure sensor 130 in the control unit 200, a concrete installation process, a compaction process, and the like to the outside. Therefore, a plurality of persons such as a worker on the spot, a task manager, etc. can simultaneously check the operation information, and if necessary, can give an additional work instruction in real time. Furthermore, it is possible to transmit the construction data to the server computer of the headquarters located at the remote place and store it.

Although the present invention has been described in connection with the preferred embodiments set forth above, it will be readily appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that all modifications are within the scope of the appended claims.

15: ground,
20: Caisson,
30: slip foam,
32: frame,
35: cured cotton,
37: back,
39: H-beam,
100: slip-foam lifting part,
120: Concrete,
130: Pressure sensor,
140: Compaction controller,
150: first pressure distribution,
160: second pressure distribution,
200:
250: Automatic compaction device,
260: concrete pouring part,
270:
280: Mobile,
300: slip foam,
310: first slip foam,
320: second slip foam,
330: frame,
350: Cured cotton,
370: rear surface,
390: H-beam.

Claims (12)

In the slip foam 300,
And a pressure sensor (130) installed on one side of the slip foam (300) and measuring the pressure of the concrete. The method according to claim 1,
Wherein the plurality of pressure sensors (130) are arranged in a straight line. The method according to claim 1,
Wherein the pressure sensor (130) is installed on the curing surface (350) of the slip foam (300). The method according to claim 1,
Characterized in that an automatic compaction device (250) is further installed at one side of the slip foam (300). A slip foam (300) having a plurality of pressure sensors (130) installed on a surface thereof to measure pressure of concrete;
An automatic compaction apparatus 250 installed on one side of the slip foam 300; And
And a control unit (200) for controlling the operation of the automatic compaction apparatus (250) based on an output signal of the pressure sensor (130). 6. The method of claim 5,
Further comprising a concrete casting part (260) for casting concrete on the slip foam (300)
Wherein the control unit (200) controls the operation of the concrete placement unit (260) based on an output signal of the pressure sensor (130). 6. The method of claim 5,
The control unit 200 operates the automatic compaction apparatus 250 until the output signal of the pressure sensors 130 provided on the slip foam 300 is equal to or less than the allowable pressure difference. Concrete pouring device using. 6. The method of claim 5,
Further comprising a slim foam lifting part (100) controlled by the controller (200) and lifting the slip foam (300). 6. The method of claim 5,
Wherein the concrete is a highly dense concrete. The concrete pouring apparatus using a slip foam having a pressure sensor. 6. The method of claim 5,
Wherein the plurality of pressure sensors (130) are installed at equally spaced intervals along the direction of gravitational force. (S100) setting a slip foam (300) provided with a plurality of pressure sensors (130);
(S120) the concrete pouring unit 260 pours the concrete into the slip foam 300 while the pressure sensor 130 measures the pressure (S130);
The control unit 200 determines whether the output signal of the pressure sensors 130 installed in the slip foam 300 is an allowable pressure level (S125);
Performing the concrete pouring step (S120) if the permissible pressure size is not satisfied;
(S140) while the pressure sensor 130 measures the pressure (S130), and the automatic compaction apparatus 250 consolidates the concrete (S140);
The control unit 200 determines whether the output signal of the pressure sensors 130 installed on the slip foams 310 and 320 is equal to or less than the allowable pressure difference.
Performing the concrete compaction step (S140) if the allowable pressure difference is exceeded, and curing the concrete when the allowable pressure difference is less than the permissible pressure difference (S180); And
And a step (S200) of lifting the slip foam (300) by the slip foam lifting part (100). (S100) setting a slip foam (300) provided with a plurality of pressure sensors (130);
(S120), when the pressure sensor 130 measures the pressure (S130), placing the concrete in the slip foam 300 by the concrete pouring unit 260;
When the pressure sensor 130 measures the pressure (S130), the automatic compaction apparatus 250 adjusts the concrete (S140);
The control unit 200 determines whether the output signal of the pressure sensors 130 installed on the slip foams 310 and 320 is equal to or less than the allowable pressure difference.
Performing the concrete compaction step (S140) if the allowable pressure difference is exceeded, and curing the concrete when the allowable pressure difference is less than the permissible pressure difference (S180); And
And a step (S200) of lifting the slip foam (300) by the slip foam lifting part (100).

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