KR102643128B1 - Slip-form structure having a device for preventing deflection of reinforcing bars and a device for applying form panel release agents - Google Patents

Abstract

By providing a reinforcing bar pushing prevention device 200 on the outside of the upper surface of the vertical slipform structure, it is possible to prevent the reinforcing bars pre-assembled before pouring concrete from being pushed into the slipform, and the form is in the form of a roller impregnated with a release agent on the outer surface of the form. A slipform structure (100) capable of easily demolding the pouring surface and formwork surface during vertical slipform construction by providing a form release agent application device (3000) is disclosed. In the reinforcing bar slip prevention device (200), the slipform A fixed jaw 210 is disposed on the upper worktable 52 of the structure 100, a guide 220 is disposed near the outer end of the upper worktable 52, and the guide 220 is installed on the upper worktable 52. A fixing beam 230 is arranged to enable reciprocating movement in the horizontal direction, and a beam to prevent the reinforcement from sliding is placed on the inner surface of a plurality of vertical reinforcing bars 44 arranged at regular intervals between the form panel 46 and the inner surface of the vertical sphere ( 240) is detachably mounted.The release agent application device 300 includes a mounting lug 310 fixed on a form connection portion 46a that secures the form 46 to the outer surface of the slipform structure 100. and an application roller 330, one end of which is fixed to the mounting lug 310 by a fixing pin 320 fixed to the mounting lug 310.

Description

Slip-form structure having a device for preventing deflection of reinforcing bars and a device for applying form panel release agents}

The present invention relates to a slipform structure, and more specifically, by providing a reinforcing bar pushing prevention device on the outside of the upper surface of the vertical slipform structure, it is possible to prevent reinforcing bars pre-assembled before pouring concrete from being pushed into the slipform. , relates to a slipform structure that can easily demold the pouring surface and formwork surface during vertical slipform construction by providing a form release agent application device in the form of a roller impregnated with a release agent on the outer surface of the form.

In general, the slip form pouring method is used when constructing concrete structures such as bridges, overpass piers, or the concrete walls of coal depots. The slipform pouring method refers to a method of constructing a concrete structure using slipform, which pours concrete while continuously and stepwise raising the formwork panels to a certain height without using fixed formwork panels.

In the slipform device used in this slipform construction method, the construction sequence of the vertical slipform in particular is to pre-assemble the reinforcing bars and then pour the concrete to raise it. In the process, the reinforcing bars assembled higher than the pouring workbench become the reinforcement reinforcing bars. Due to the weight of the vertical reinforcing bar itself, the slip form is pushed inward. As a result, during the concrete pouring process, difficulties arise in having to rearrange the reinforcing bars perpendicular to the formwork.

Therefore, there is an emerging need to improve the convenience and efficiency of work by preventing the pushing phenomenon of reinforcing bars during the construction of vertical slip forms.

Meanwhile, when constructing a vertical slip form, a release agent is applied to demold the concrete pour surface and form surface more easily. This has the effect of preventing adhesion of the formwork and concrete. However, since workers must directly apply the release agent to the form surface using a roller at the site, construction is inconvenient and work efficiency is significantly reduced. Additionally, a problem occurs in which the release agent is not evenly applied to the entire surface of the formwork.

Therefore, in the construction of vertical slip form, there is a need to improve the convenience of construction and work efficiency by allowing workers to apply the release agent in a more comfortable working environment.

Republic of Korea Patent No. 10-1978500 (Registration date: May 8, 2019) Republic of Korea Patent No. 10-2027499 (registration date: September 25, 2019)

The technical problem to be solved by the present invention is to provide a vertical sphere slipform structure that can prevent reinforcing bars pre-assembled before pouring concrete from being pushed into the slipform by providing a reinforcing bar push prevention device on the outside of the upper surface of the vertical sphere slipform structure. The goal is to provide a structure.

In addition, the technical problem to be solved by the present invention is to provide a vertical sphere slip that can easily demold the casting surface and form surface during construction of vertical sphere slip form by providing a form release agent application device in the form of a roller impregnated with a release agent on the outer surface of the form. The goal is to provide a foam structure.

In order to solve the technical problems described above, the present invention,

A slipform structure for performing a slipform pouring method in which concrete is poured while continuously and stepwise raising the formwork panels at a certain height,

When constructing a vertical slipform using the above slipform structure, when reinforcing bars are pre-assembled and then concrete is poured and raised, reinforcing bar pushing is prevented to prevent the reinforcing bars assembled higher than the pouring workbench from being pushed inside the slipform. Device; and

A slipform structure comprising a release agent application device for easily demolding the concrete pouring surface and formwork surface when pouring and raising concrete during construction of a vertical slipform using the slipform structure. provides.

The device to prevent the reinforcing bar from slipping is,

A fixed jaw fixedly disposed at an intermediate position on the upper work object of the slipform structure;

a guide fixedly disposed near an outer end of the upper work table;

a fixing beam disposed to reciprocate horizontally on the upper work object via the guide and connected to a hydraulic jack for receiving hydraulic pressure from an external hydraulic supply source; and

It is characterized in that it includes; a reinforcing bar sliding prevention beam that is detachably mounted on the inner surface of a plurality of vertical reinforcing bars arranged at regular intervals between the form panel and the inner surface of the vertical sphere.

The release agent application device,

A mounting lug fixed to a formwork connection portion that secures the formwork to the outer surface of the slipform structure; and

and an application roller, one end of which is fixed to the mounting lug by a fixing pin inserted into and fixed to the mounting lug.

The application roller is fixed to the mounting lug through one end of a roller rotation shaft extending longitudinally across the inner central position of the application roller, and is held by a plurality of bearings disposed around the roller rotation shaft. It is characterized by being arranged so that it can rotate around the roller rotation axis.

As described above, according to the present invention, there is a guide line that holds the reinforcing bars vertically when pouring concrete, so there is no need to rearrange the reinforcing bars. Therefore, construction time is shortened and work efficiency is increased. In addition, by providing a form release agent application device in the form of a roller impregnated with a release agent on the outer surface of the form, the release agent can be applied more evenly and frequently to the form surface, and in the construction of a slip form that must be raised while continuously pouring concrete. The concrete surface and formwork surface can be demolded cleanly. The release agent application device is detachable, so it does not interfere with other construction projects and can contribute to forming a high-quality wall.

1 is a diagram schematically showing the overall configuration of a slipform structure equipped with a reinforcing bar slip prevention device and a form release agent application device according to the present invention;
Figure 2 is a plan view of the slipform structure shown in Figure 1;
Figure 3 is an enlarged view of part "A" of Figure 1 and Figure 4 is an enlarged view of part "B" of Figure 2, showing the configuration of a device to prevent rebar slipping;
Figure 5 is a diagram schematically showing the configuration of the reinforcing bar sliding prevention device according to the present invention;
Figure 6 is a view showing the operating state of the reinforcing bar sliding prevention device according to the present invention;
Figure 7 is an enlarged view of portion "C" in Figure 1, showing the configuration of a mold release agent application device; and
Figure 8 is an enlarged view showing the application roller in the form release agent application device shown in Figure 7.

Hereinafter, with reference to the accompanying drawings, a slipform structure equipped with a rebar slip prevention device and a form release agent application device according to the present invention will be described in detail.

The accompanying drawings FIGS. 1 and 2 show the overall configuration of the slipform structure 100 equipped with the reinforcing bar push prevention device 200 and the form release agent application device 300 according to the present invention.

The slipform structure 100 is a structure for performing a slipform pouring method in which concrete is poured while continuously and stepwise raising formwork panels to a certain height without using fixed formwork panels. The slipform structure 100 includes a lifting device (reference sign omitted), a support structure supported and raised by the lifting device (reference sign omitted), and a slip structure coupled to the support structure and disposed on the side of the support structure. (reference signs omitted), and this configuration is disclosed in Korean Patent No. 10-1978500, registered by the present applicant on May 8, 2019, and Korean Patent No. 10-2027499, registered on September 25, 2019. The configuration is almost identical to that of the slipform device.

However, the slipform structure 100 according to the present invention requires design changes and improvements in some components in the overall configuration of the slipform device disclosed in Patent Nos. 10-1978500 and 10-2027499 of the present applicant. However, the basic composition and operating mechanism can be considered the same.

Therefore, in this specification, the configuration and operation of the lifting device, the support structure, and the slip structure in the slip form structure 100 are disclosed in Patent Nos. 10-1978500 and 10-2027499 of the present applicant. It is stated that the configuration of the slip form device applies, and detailed descriptions of the configuration and operation of the lifting device to raise the support structure and the slip structure are omitted. However, it is stated that the expressions described in the above registered patents are used as the basis for the composition and operation that must be explained in order to facilitate understanding of the present invention.

1 and 2, the support structure (reference numeral omitted) includes a horizontal support portion 31 disposed on the lifting device (reference numeral omitted) and supported by the lifting device, and the horizontal support portion 31. It includes impression guides 32 and 34 coupled to both sides.

The lifting device is installed on a base block (not shown) installed on the ground and supported by the base block. The lifting device includes a main body, and a first lifting member 22 and a second lifting member 24 each having a built-in cylinder rod that can be pulled out from the main body in a vertical direction. In the drawings, parts of the first lifting member 22 and the second lifting member 24 are omitted for convenience of explanation. The first lifting member 22 and the second lifting member 24 are disposed and supported on a vertical fixing part (not shown) of the base block extending vertically upward from the ground. Upper portions of the first lifting member 22 and the second lifting member 24 may be fixed to the lower surface of the horizontal support 31 and the inner surfaces of the lifting guides 32 and 34.

When hydraulic pressure is provided to the first lifting member 22 and the second lifting member 24 of the lifting device, the cylinder rod is pulled out from the main body of the first lifting member 22 and the second lifting member 24, thereby The main body of the first lifting member 22 and the second lifting member 24 and the support structure supported by them are allowed to move upward.

The support structure is coupled to the slip structure (reference numerals omitted). For example, the slip structure may be integrally fixed to the lateral outer side of the support structure. According to a preferred embodiment of the present invention, the slip structure includes a slip guide (reference numerals omitted) and a formwork panel 46 coupled to the slip guide. For example, the slip guide may include a pair of vertical guides (42a, 42b) arranged to be horizontally spaced apart, and may further include a guide connection portion (45) connecting the vertical guides (42a, 42b). You can.

The formwork panel 46 may be disposed outside the second vertical guide 42b among the vertical guides 42a and 42b. For example, the formwork panel 46 may be integrally fixed to the outer surface of the second vertical guide 42b among the vertical guides 42a and 42b.

When pouring concrete in a vertical tool using the slipform structure 100 according to the present invention, a concrete supply pipe (not shown) is placed in the space S created between the form panel 46 and the inner surface of the vertical tool. ) is positioned, concrete is supplied through the concrete supply pipe to form the wall 60. Between the form panel 46, where concrete is provided to form the wall 60, and the inner surface of the vertical tool, a plurality of vertical reinforcing bars 44 are placed in front along the radial inner surface of the vertical tool to reinforce strength. They are placed at regular intervals.

In Figure 1, the form panel 46 is shown as spaced from the ground, but the present invention is not limited thereto, and in the initial stage of concrete pouring, the form panel 46 may be placed low or extended so as to substantially contact the ground. Those skilled in the art will be able to easily understand that there is.

The slipform structure 100 may further include a plurality of workbenches for concrete pouring work, etc. For example, between the impression guides 32 and 34 and between the vertical guides 42a and 42b, an upper work table 52 and a middle work table 53 may be arranged to be spaced apart by a certain distance in the vertical direction. And, a lower work table 54 may be disposed below the support structure and the slip structure. At this time, the lower worktable 54 is fixed to the lower surface of the middle worktable 53 and is supported by a fixed cable 55 extending vertically downward.

Meanwhile, the reinforcing bar sliding prevention device 200 is disposed on the upper work table 52 of the slipform structure, which is disposed outside the support structure among the above-mentioned upper work tables 52.

The reinforcing bar sliding prevention device 200 is used in the slipform construction method using the slipform structure 100 according to the present invention, for example, when constructing a vertical sphere slipform, the reinforcing bars are pre-assembled and then concrete is poured and raised. During this process, the reinforcing bars assembled higher than the pouring work table perform the function of preventing the phenomenon of being pushed inward of the slip form due to the weight of the reinforcement reinforcing bars and the weight of the vertical reinforcing bars themselves.

To this end, the reinforcing bar sliding prevention device 200 includes a fixed jaw 210 fixedly disposed at an intermediate position on the upper worktable 52 of the slipform structure 100, as shown in FIGS. 3 to 5 of the accompanying drawings. , a guide 220 fixedly disposed near the outer end of the upper work table 52, and a fixing beam 230 arranged to be reciprocatable in the horizontal direction via the guide 220 on the upper work table 52. , and a reinforcing bar sliding prevention beam 240 that is detachably mounted on the inner surface of the vertical reinforcing bar 44. A hydraulic jack (not shown) that operates by receiving hydraulic pressure from an external hydraulic source is connected to the fixing beam 230 to support the horizontal reciprocating movement of the fixing beam 230.

The accompanying drawing, FIG. 6, shows the operation of the rebar slip prevention device 200 configured as described above.

Referring to FIG. 6, when constructing a slipform using the slipform structure 100 according to the present invention, after assembling the reinforcing bars in advance, when concrete is placed and raised, the vertical reinforcing bars 44 are inside the slipform. In order to prevent the sliding phenomenon, the reinforcing bar sliding prevention beam 240 is fixedly installed at the position of the vertical reinforcing bar 44 that is horizontally aligned with the upper work table 52 of the slipform structure. In this state, the fixing beam 230 disposed on the upper worktable 52 of the slipform structure is moved horizontally to the outside of the upper worktable 52 of the slipform structure, that is, toward the vertical reinforcing bar 44. I order it. At this time, the guide 220 and the fixing jaw 210 serve to stably support the horizontal movement of the fixing beam 230. Through this operation, the outer end of the fixing beam 230 is supported by contacting the reinforcing bar pushing prevention beam 240 of the vertical reinforcing bar 44, thereby preventing the vertical reinforcing bar 44 from being pushed inward. .

As a result, according to the present invention, due to the configuration and operation of the reinforcing bar sliding prevention device 200, the vertical reinforcing bars are held vertically so that they are not pushed inward when pouring concrete, so there is no need to rearrange the vertical reinforcing bars, and construction time is reduced. It can be shortened and work efficiency can be increased.

Meanwhile, in the slipform structure 100, the release agent application device 300 is disposed outside the formwork panel 46. The release agent application device 300 makes it easier to demold the concrete pouring surface and formwork surface when pouring and raising concrete during construction of a vertical slipform using the slipform structure 100 according to the present invention. It is for.

For this purpose, the release agent application device 300 is a mounting device fixed on the form connection portion 46a that secures the form 46 on the outer surface of the slipform structure, as shown in FIGS. 7 and 8 of the accompanying drawings. It includes a lug 310 and an application roller 330, one end of which is fixed to the mounting lug 310 by a fixing pin 320 fixed to the mounting lug 310. The application roller 330 is fixed to the mounting lug 310 through one end of a roller rotation axis 330a extending longitudinally across the inner central position of the application roller 330. It is arranged to be rotatable about the roller rotation axis 330a by a plurality of bearings 330b arranged around the roller rotation axis 330a. The brush of the application roller 330 is made of the same material as a general paint roller, but is preferably designed to contain as much lubricant as possible.

The release agent application device 300 configured as described above conveniently applies the release agent to prevent adhesion of the form and concrete for easy demoulding of the form when constructing a slip form using the slip form structure 100 according to the present invention. It can be applied easily. That is, in the past, when applying a release agent to prevent adhesion of the form and concrete, workers on site manually applied the release agent to the form surface using a roller, but in the present invention, the release agent installed on the outside of the form panel 46 Using the release agent application device 300, the release agent can be automatically applied when the slim form rises.

As a result, in the construction of vertical slip form, the convenience of construction and work efficiency can be improved by allowing workers to apply the release agent in a more comfortable working environment. Additionally, the release agent is applied relatively evenly to the entire surface of the formwork.

Although the present invention has been described above with reference to preferred embodiments, those skilled in the art may modify and change the present invention in various ways without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it is possible.

22,24: Raising member 32,34: Raising guide
42a, 42b: vertical guide 46: formwork panel
52,53,54: workbench 60: wall
100: Slipform structure 200: Reinforcement prevention device
210: fixed jaw 220: guide
230: Beam for fixing 240: Beam for preventing reinforcing bars from sliding
300: Mold release agent application device 310: Holding lug
320: fixing pin 330: application roller

Claims (4)

A slipform structure 100 for performing a slipform pouring method in which concrete is poured while continuously and stepwise raising the formwork panel 46 to a certain height,
When constructing a vertical slipform using the slipform structure 100, when reinforcing bars are pre-assembled and then concrete is poured and raised, it is used to prevent the reinforcing bars assembled higher than the pouring work table from being pushed into the slipform. Rebar pushing prevention device (200); and
When constructing a vertical slip form using the slip form structure 100, a release agent application device 300 is used to easily demold the concrete pour surface and form surface when pouring and raising concrete,
The rebar pushing prevention device 200 is,
A fixing jaw 210 fixedly disposed at an intermediate position on the upper worktable 52 of the slipform structure 100;
A guide 220 fixedly disposed near the outer end of the upper work table 52;
A fixing beam (230) disposed on the upper worktable (52) to be capable of reciprocating in the horizontal direction via the guide (220) and connected to a hydraulic jack for receiving hydraulic pressure from an external hydraulic supply source; and
A slip-prevention beam 240 that is detachably mounted on the inner surface of a plurality of vertical reinforcing bars 44 disposed at regular intervals between the form panel 46 and the inner surface of the vertical sphere. Foam structures. delete The method of claim 1, wherein the release agent application device 300,
A mounting lug 310 fixed on a formwork connection portion 46a that secures the formwork panel 46 to the outer surface of the slipform structure 100; and
An application roller 330, one end of which is fixed to the mounting lug 310 by a fixing pin 320 fixed to the mounting lug 310;
A slipform structure comprising: According to claim 3, wherein the application roller 330 is disposed to extend across the inner central position of the application roller 330 in the longitudinal direction through one end of the roller rotation axis 330a. A slipform structure, characterized in that it is arranged to be rotatable about the roller rotation axis (330a) by a plurality of bearings (330b) arranged around the roller rotation axis (330a).

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