KR20210043089A - Slip form having a partial heating part, concrete depositing system using therewith, and concrete depositing method using therewith - Google Patents

Abstract

The present invention relates to a slip form having a partial heating unit, a concrete placement system using the same, and a concrete placing method using the same. To this end, provided is the slip form having a partial heating unit, which comprises: a slip form of which one surface comes in contact with concrete; and a heating unit (220) placed on a lower end of the slip form in a longitudinal direction to partially heat the concrete. In addition, provided is the concrete placement system using the slip form having the partial heating unit, which comprises: a slip form (200) having a partial heating unit (220), which is installed on each outer wall (110) of concrete having a plurality of outer walls (110); outer temperature sensors (140, 142, 144, 146) installed on an outer side of each outer wall (110) and inner temperature sensors (150, 152, 154, 156) installed on an inner side of the outer wall (110); and a control unit (300) which controls the heating unit (220) by comparing the outer temperature based on the outer temperature sensors (140, 142, 144, 146) and the inner temperature based on the inner temperature sensors (150, 152, 154, 156). The present invention aims to provide the slip form having the partial heating unit, the concrete placement system using the same, and the concrete placing method using the same, which can minimize the difference in temperature between parts.

Description

Slip form having a partial heating part, concrete depositing system using therewith, and concrete depositing method using therewith}

The present invention relates to a slip foam, and more particularly, to a slip foam having a partial heating unit, a concrete pouring system using the same, and a concrete pouring method using the same.

Slip Form is used to form structures without construction joints by lifting the foam when the concrete starts to harden. The construction of the slip foam proceeds continuously for 24 hours, and in general, concrete is continuously poured over four stages up to the height of 80cm of the slip foam (about 1m high). The concrete layer poured once is about 20 cm long, and the concrete in the lower layer placed first is demolded from the slip foam after securing a degree of rigidity to support the deformation due to the weight of the concrete just before initial setting.

In particular, when curing a caisson (height: 20 m ~ 30 m), a large civil engineering structure, with slip foam, there were the following problems at the construction site. Among the caissons, the temperature of the slip foam of Yangji, the side that receives sunlight from the sun, has a high temperature, and the slim foam of the shaded shade is low. In particular, in the Middle East or Southeast Asia, the temperature difference occurs in the morning (the sun is east) and the evening (the sun is west) because of the large change in solar radiation depending on the position of the sun. Therefore, a large difference in setting time occurs in the entire cross section.

Due to this temperature difference, the setting time of the concrete inside the slip foam varies, and the occurrence of a large temperature difference causes a large difference in setting time. If the slip foam is lifted in this state, one side is too hard and sticks to the slip foam, and the other side is not condensed and collapses.

In addition, since the slip foam disclosed in the conventional patent registration No. 10-1807942 is a method of heating the entire slip foam with a heater, power consumption is large. In addition, since a plurality of concrete layers of different pouring times exist on one slip foam curing surface, it was difficult to obtain a uniform temperature distribution by using one slip foam throughout the entire heating process. In particular, the heat of hydration generated during concrete curing causes the most rapid increase in temperature within 24 hours after pouring, and is a pattern that decreases after maintaining a constant temperature.

Therefore, as described above, it was difficult to actively cope with various construction environments (eg, changes in solar radiation) at the construction site, and thus defects or defects occurred in the manufactured concrete structure.

1. Korean Patent Laid-Open Publication No. 10-2010-0123249 (A method for evaluating whether or not to lift the slip form based on the accumulated temperature), 2. Korean Patent Registration No. 10-1807942 (Lifting system and lifting method with slip form controlled by temperature)

Therefore, the present invention was conceived to solve the above problems, and the first object to be solved of the present invention is to occur when curing the slip foam of a large concrete structure (eg, caisson, bridge, building, etc.) It is to provide a slip foam having a partial heating unit capable of minimizing the temperature difference between parts, a concrete pouring system using the same, and a concrete pouring method using the same.

A second object of the present invention is to provide a slip foam having a partial heating unit capable of automatically controlling the temperature difference of each outer wall according to a change in the position of the sun during the day, a concrete pouring system using the same, and a concrete pouring method using the same. .

A third object of the present invention is to provide a slip foam having a partial heating unit capable of minimizing power required for heating the slip foam, a concrete pouring system using the same, and a concrete pouring method using the same.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those of ordinary skill in the technical field to which the present invention belongs from the following description. It will be understandable.

In order to achieve the above technical problem, one side of the slip foam in contact with the concrete; And a heating unit 220 provided at the lower end of the slip foam in the longitudinal direction to partially heat the concrete.

In addition, the heating unit 220, a heating plate 224 made of a metal material on one side to form a curing surface 222; A heater 228 provided on the other surface of the heating plate 224; And an insulating material 226 surrounding the other surface of the heating plate 224 and the heater 228.

In addition, the height of the heating plate 224 may range from 5% to 30% of the height of the slip foam 200.

In addition, the heating unit 220, a heater 228 for heating the slip foam; And an insulating material 226 surrounding the periphery of the heater 228.

An object of the present invention as described above is, as another embodiment, the partial heating unit 220 according to any one of claims 1 to 3, which is installed for each outer wall 110 of concrete having a plurality of outer walls 110 ) Having a slip foam 200; Outer temperature sensors 140, 142, 144, 146 installed on the outer side of each outer wall 110 and inner temperature sensors 150, 152, 154, 156 installed on the inner side of the outer wall 110; And a control unit for controlling the heating unit 220 by comparing the outer temperature based on the outer temperature sensors 140, 142, 144, 146 and the inner temperature based on the inner temperature sensors 150, 152, 154, 156 ( 300); It may be achieved by a concrete pouring system using a slip foam having a partial heating unit characterized in that it includes.

In addition, the concrete may be a caisson (100).

In addition, when the inner temperature is higher than the outer temperature, the controller 300 operates the heater 228 of the heating unit 220 until the inner temperature and the outer temperature become the same.

In addition, the control unit 300 independently controls the heating unit 220 for each outer wall 110.

An object of the present invention as described above, as another category, the step of pouring concrete using the above-described slip foam 200 (S100); The outer temperature sensors 140, 142, 144, 146 installed on the outside of each outer wall 110 of concrete measure the outer temperature, and inner temperature sensors 150, 152, which are installed inside the outer wall 110, 154, 156) measuring the inner temperature (S110); Comparing, by the control unit 300, the outer temperature and the inner temperature (S120); If the inner temperature is higher than the outer temperature, the control unit 300 heating the heating unit 220 of the slip foam 200 (S130); If the inner temperature and the outer temperature are the same (S140), the control unit 300 stopping the heating of the heating unit 220 (S150); Raising the slip foam 200 by one section corresponding to the height of the heating unit 220 (S160); And it may be achieved by a concrete pouring method using a slip foam having a partial heating portion characterized in that it comprises; and the step of additionally pouring concrete to the slip foam 200 (S170).

In addition, the temperature measurement step (S110) to the pouring step (S170) may be repeated.

In addition, the concrete is the caisson 100, the temperature measurement step (S110) to the pouring step (S170) is repeated up to the height of the caisson (100).

In addition, the temperature measurement step (S110) to the pouring step (S170) may be repeated during the week.

In addition, the control unit 300 independently controls the heating unit 220 for each outer wall 110.

According to an embodiment of the present invention, it is possible to minimize a temperature difference for each part that occurs when curing the slip foam of a large concrete structure (eg, caisson, bridge, building, etc.). Therefore, it is possible to obtain a large concrete structure having a uniform quality.

In addition, it is possible to automatically control the temperature difference of each outer wall according to the change in the position of the sun during the day. Therefore, it is possible to minimize changes in quality according to changes in weather or time.

In addition, energy consumed can be saved by heating only the portion where the temperature difference occurs, thereby minimizing the temperature difference, and the rising speed of the slip foam can be increased. In addition, since heat can be supplied only to the outside of the caisson, it is possible to prevent accidents due to the slip foam sticking to the concrete.

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. I will be able to.

The following drawings attached in the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention to be described later. It is limited only to and should not be interpreted.
1 is a plan view of a caisson 100 in which a slip foam having a partial heating unit is installed according to an embodiment of the present invention,
2 is a front view of a slip foam having a partial heating unit according to an embodiment of the present invention,
3A is a partial side cross-sectional view of the heating unit 220 shown in FIG. 2,
Figure 3b is a modified embodiment of Figure 3a,
4 is a schematic configuration diagram of a concrete pouring system using a slip foam having a partial heating unit according to an embodiment of the present invention,
5 is a flow chart showing a concrete pouring method using a slip foam having a partial heating unit according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all or only such effects, the scope of the present invention should not be understood as being limited thereto.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when it is mentioned that a component is "directly connected" to another component, it should be understood that there is no other component in the middle. On the other hand, other expressions describing the relationship between components, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" refer to the specified features, numbers, steps, actions, components, parts, or these. It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted as having meanings in the context of related technologies, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Example of Configuration

Hereinafter, a configuration of a preferred embodiment will be described in detail with reference to the accompanying drawings. 1 is a plan view of a caisson 100 in which a slip foam having a partial heating unit is installed according to an embodiment of the present invention. As shown in Fig. 1, the caisson 100 is a large civil engineering structure having a substantially rectangular parallelepiped shape and a height of 20 m to 30 m. The caisson 100 is usually manufactured on site, and it takes a few days to a month to complete. Therefore, as shown in FIG. 1 during the manufacturing process, the amount of irradiation of the sunlight 40 and the location of the shade vary according to the position of the sun (morning sun 10, noon sun 20, afternoon sun 30). This is affected by temperature.

The circumference of the caisson 100 is made of an outer wall 110, and a plurality of cells 120 (about 20 to 40) divided by a partition wall 130 are formed therein. The outer wall 110 may be divided into first, second, third, and fourth outer walls 112, 114, 116, and 118.

The first outer sensor 140 is installed on the outside of the first outer wall 112 and the first inner sensor 150 is installed on the inside to measure the temperature from the outside and the inside, respectively. A second outer sensor 142 is installed on the outside of the second outer wall 114, and a second inner sensor 152 is installed on the inside to measure the temperature from the outside and the inside, respectively. A third outer sensor 144 is installed on the outside of the third outer wall 116, and a third inner sensor 154 is installed on the inside to measure the temperature from the outside and the inside, respectively. A fourth outer sensor 146 is installed on the outside of the fourth outer wall 118, and a fourth inner sensor 156 is installed on the inside to measure the temperature from the outside and the inside, respectively.

These first, second, third, and fourth outer sensors 140, 142, 144, and 146 are temperature sensors, and may be attached to the slip foam 200 or separately attached to the outside. In addition, the first, second, third, and fourth inner sensors 150, 152, 154, and 156 are temperature sensors, and may be attached to the slip foam 200 or separately attached to the inner side.

If the length of one side of the caisson 100 (for example, the second outer wall 114) is too long, a number of slip foams 200 are installed on the second outer wall 114 by dividing it in units of 3 to 10 m. , Each temperature sensor can be attached. This modification can be applied equally to the first, third, and fourth outer walls 112, 116, and 118.

2 is a front view of a slip foam having a partial heating unit according to an embodiment of the present invention. As shown in FIG. 2, the slip foam 200 corresponds to a part of the overall height of the caisson 100 and gradually rises in the upward direction according to the curing speed.

The heating unit 220 is installed in the longitudinal direction (horizontal direction) at the lower end of the slip foam 200 and is a region for heating the caisson 100. The height of the heating unit 220 corresponds to one section 230, and the slip foam 200 rises in units of one section 230. The height of the heating unit 220 may be appropriately selected within a range of 5% to 30% of the total height of the slip foam 200. If it is less than 5%, it is difficult to raise the slip foam finely because the height of one section is too small, and it is difficult to pour concrete evenly. In addition, when it exceeds 30%, the height of the section 230 is too high, so a large amount of concrete is poured at once, and the waiting time for curing is lengthened. If the height of the slip foam 200 is 1 m, the first section 230 is in the range of 5 cm to 30 cm, preferably 20 cm.

3A is a partial side cross-sectional view of the heating unit 220 shown in FIG. 2. 3A, the heating plate 224 is made of iron or aluminum, and has a smooth curing surface 222 on one surface. A heater 228 is provided on the other surface of the heating plate 224. The heater 228 heats the heating plate 224 through heat generation and transfers heat to the caisson 100. The heater 228 may be an electric heater or a Peltier, or may be a hot water pipe by a boiler (not shown). If the heater 228 is further subdivided, the first heater 228a of the slip foam 200 installed on the first outer wall 112, the second heater 228b of the slip foam 200 installed on the second outer wall 114, It can be divided into a third heater 228c of the slip foam 200 installed on the third outer wall 116 and a fourth heater 228d of the slip foam 200 installed on the fourth outer wall 118.

An insulating material 226 is wrapped around the other surface of the heating plate 224 and the heater 228 to prevent heat loss to the outside. The insulating material 226 may be selected from styrofoam, glass fiber, insulating sheet, urethane, and the like.

3B is a modified embodiment of FIG. 3A. As shown in FIG. 3B, a space is formed with an insulating material 226 on the outer wall of the slip foam 200, and a heater 228 is provided in the space of the insulating material 226 to heat the slip foam 200. have.

4 is a schematic configuration diagram of a concrete pouring system using a slip foam having a partial heating unit according to an embodiment of the present invention. As shown in Figure 4, the first, 2, 3, 4 outer sensors (140, 142, 144, 146) and the first, 2, 3, 4 inner sensors (150, 152, 154, 156) are the control unit ( 300) and transmits an output signal of the measured temperature to the controller 300.

The first, second, third, and fourth heaters 228a, 228b, 228c, and 228d are connected to the control unit 300 and are independently controlled to generate heat.

The display 310 displays the temperature values of the 1st, 2nd, 3rd, 4th outer sensors 140, 142, 144, 146 and the 1st, 2nd, 3rd and 4th inner sensors 150, 152, 154, 156, and , The operating states of the first, second, third, and fourth heaters 228a, 228b, 228c, and 228d are displayed. The display 310 may be configured as an LCD, and may be configured as a touch screen to input a desired input value.

Example of action

Hereinafter, the operation of the preferred embodiment will be described in detail with reference to the accompanying drawings. 5 is a flow chart showing a concrete pouring method using a slip foam having a partial heating unit according to an embodiment of the present invention. As shown in FIG. 5, first, concrete is poured using the slip foam 200 described above (S100). To this end, a caisson-shaped slip foam 200 as shown in FIG. 1 is assembled, and concrete is poured therein.

Then, the outer temperature sensors 140, 142, 144, 146 installed on the outer side of each outer wall 110 of the concrete measure the outer temperature, and inner temperature sensors 150 installed on the inner side of the outer wall 110 , 152, 154, 156) measures the inner temperature (S110). That is, the first outer sensor 140 of the first outer wall 112 measures the outer temperature, and the first inner sensor 150 measures the inner temperature. If, in the morning sun 10, the amount of sunlight irradiation on the first outer wall 112 increases, and the temperature increases due to the heat of hydration of concrete, so that the temperature difference between the outer and the inner side decreases. On the other hand, since the third outer wall 116 and the fourth outer wall 118 are shaded, the temperature difference between the outer and the inner side becomes large. This change in temperature changes every minute depending on the position of the sun during the day.

Then, the control unit 300 compares the outer temperature and the inner temperature (S120). That is, the inner and outer temperatures of the first outer wall 112 are compared, the inner and outer temperatures of the second outer wall 114 are compared, the inner and outer temperatures of the third outer wall 116 are compared, and the fourth outer wall 118 Compare the internal and external temperatures of.

If the inner temperature is higher than the outer temperature, the control unit 300 heats the heating unit 220 of the slip foam 200 (S130). This temperature determination and heating are performed independently for the first, second, third, and fourth outer walls 112, 114, 116, and 118. The heated area is only as much as the area of the heating unit 220 in the entire slip foam 200. Therefore, since it is not necessary to heat the entire slip foam 200, energy (eg, power) can be saved.

If the inner temperature and the outer temperature are the same (S140), the control unit 300 stops the heating of the heating unit 220 (S150). This is because there is no temperature difference between the inside and the outside, so there is no fear of cracking due to the temperature difference, and wait until the concrete is cured (hardened, hardened) in this state. The heating is also selectively stopped for the first, second, third and fourth outer walls 112, 114, 116, and 118.

Then, the slip foam 200 is raised by one section (230, about 20 cm) corresponding to the height of the heating unit 220 (S160).

Then, concrete is additionally poured into the slip form 200 (S170).

Through this process, one pouring and rising of the slip form are completed. The temperature measurement step (S110) to the pouring step (S170) is repeated up to the height of the caisson 100 to finally complete the caisson 100.

In addition, optionally, the temperature measurement step (S110) to the pouring step (S170) may be repeated during the day when the influence of the sun is large.

transform Example of action

Although the heating unit 220 of the present invention is attached to the lower end of the slip foam, in another embodiment, it may be attached to the upper end of the slip foam, attached to both the lower and upper ends, or attached to the middle area.

Detailed description of the preferred embodiments of the present invention disclosed as described above has been provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use the components described in the above-described embodiments in a manner that combines them with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, the embodiments may be configured by combining claims that do not have an explicit citation relationship in the claims, or may be included as new claims by amendment after filing.

10: morning sun,
20: noon sun,
30: afternoon sun,
40: sunlight,
100: caisson,
110: outer wall,
112: first outer wall,
114: second outer wall,
116: third outer wall,
118: fourth outer wall,
120: cell,
130: bulkhead,
140: first outer sensor,
150: first inner sensor,
142: second outer sensor,
152: second inner sensor,
144: third outer sensor,
154: third inner sensor,
146: the fourth outer sensor,
156: fifth inner sensor,
200: slip foam,
220: heating part,
222: Yangsaengmyeon,
224: curing plate,
226: insulation,
228: heater,
228a: first heater,
228b: second heater,
228c: third heater,
228d: fourth heater,
230: 1 section,
240: upward direction,
300: control unit,
310: display,

Claims (13)

One side of the slip foam in contact with the concrete; And
It is provided in the longitudinal direction at the bottom of the slip foam, a heating unit 220 for partially heating the concrete; Slip foam having a partial heating unit comprising a. The method of claim 1,
The heating unit 220,
A heating plate 224 made of a metal material having one side forming the curing side 222;
A heater 228 provided on the other surface of the heating plate 224; And
Insulation material 226 surrounding the other surface of the heating plate 224 and the heater 228; a slip foam having a partial heating unit, characterized in that it comprises. The method of claim 2,
The height of the heating plate 224 is a slip foam having a partial heating portion, characterized in that in the range of 5% to 30% of the height of the slip foam 200. The method of claim 1,
The heating unit 220,
A heater 228 for heating the slip foam; And
A slip foam having a partial heating unit, characterized in that it comprises; an insulating material 226 surrounding the periphery of the heater 228. A slip foam 200 having a partial heating unit 220 according to any one of claims 1 to 4, which is installed for each of the outer walls 110 of concrete having a plurality of outer walls 110;
Outer temperature sensors (140, 142, 144, 146) installed on the outer side of each outer wall 110 and inner temperature sensors (150, 152, 154, 156) installed on the inner side of the outer wall 110; And
A control unit that controls the heating unit 220 by comparing the outer temperature based on the outer temperature sensors 140, 142, 144, 146 and the inner temperature based on the inner temperature sensors 150, 152, 154, 156 (300); Concrete pouring system using a slip foam having a partial heating unit comprising a. The method of claim 5,
The concrete pouring system using slip foam having a partial heating unit, characterized in that the concrete is a caisson (100). The method of claim 5,
When the inner temperature is higher than the outer temperature, the control unit 300 operates the heater 228 of the heating unit 220 until the inner temperature and the outer temperature become the same. Concrete pouring system using slip foam. The method of claim 5,
The control unit 300 is a concrete pouring system using a slip foam having a partial heating unit, characterized in that independently controlling the heating unit 220 for each of the outer walls (110). Pouring concrete using the slip foam 200 according to any one of claims 1 to 4 (S100);
Outside temperature sensors 140, 142, 144, 146 installed outside each of the outer walls 110 of the concrete measure the outside temperature, and inside temperature sensors 150 installed inside the outer wall 110, 152, 154, 156) measuring the inner temperature (S110);
Comparing, by the control unit 300, the outer temperature and the inner temperature (S120);
If the inner temperature is higher than the outer temperature, the control unit 300 heating the heating unit 220 of the slip foam 200 (S130);
If the inner temperature and the outer temperature are the same (S140), the control unit 300 stopping the heating of the heating unit 220 (S150);
Raising the slip foam 200 by one section corresponding to the height of the heating unit 220 (S160); And
Concrete pouring method using a slip foam having a partial heating portion comprising; the step of additionally pouring concrete to the slip foam 200 (S170). The method of claim 9,
Concrete pouring method using a slip foam having a partial heating, characterized in that the temperature measuring step (S110) to the pouring step (S170) are repeated. The method of claim 10,
The concrete is a caisson (100),
The temperature measuring step (S110) to the pouring step (S170) is a concrete pouring method using a slip foam having a partial heating, characterized in that repeated up to the height of the caisson (100). The method of claim 10,
The temperature measurement step (S110) to the pouring step (S170) is a concrete pouring method using a slip foam having a partial heating, characterized in that repeated during the week. The method of claim 9,
The control unit 300 is a concrete pouring method using a slip foam having a partial heating unit, characterized in that independently controlling the heating unit 220 for each of the outer wall (110).

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