PC Double Wall Manufacturing Mold and PC Double Wall Manufacturing Method Using The Same

Abstract

The present invention provides a PC double-wall manufacturing mold and a method for manufacturing a PC double-wall using the same, wherein a pre-manufactured first PC panel is rapidly placed in an accurate position after inversion, thereby ensuring that the second PC panel produced subsequently and the first PC panel are manufactured without misalignment when facing each other, thereby improving productivity and quality, and enhancing cross-sectional reinforcement of the central part and composite strength with concrete to be poured into the panel space. A PC double-wall manufacturing mold according to a suitable embodiment of the present invention comprises: a mold base that supports the manufacturing load of the PC double-wall; a panel formwork frame installed in a square closed state on the upper surface of the mold base to form the PC panel of the PC double-wall; and a double-wall lifting support girder that is fixedly installed and supported on the upper surface of the mold base, arranged parallel to each other at a certain height along the longitudinal directions on both sides around the perimeter of the formwork frame. It is characterized by including: a long-side panel support and a short-side panel support, each positioned inside the double-wall lifting support girder along the perimeter of the formwork to support the PC double-wall lifted in an inverted state during production; and a plurality of lifting rods mounted on the upper surface of the double-wall lifting support girder to be used for installing or lifting the PC double-wall structure.

Description

Technology Field

[0001] The present invention relates to a PC double-wall manufacturing mold and a method for manufacturing a PC double-wall using the same. In particular, it relates to a PC double-wall manufacturing mold and a method for manufacturing a PC double-wall using the same, wherein a first PC panel pre-manufactured in the mold is rapidly placed in an accurate position after inversion, thereby ensuring that the second PC panel produced later and the first PC panel face each other without misalignment, thereby improving productivity and quality, and enhancing cross-sectional reinforcement of the central part and composite strength with concrete to be poured into the panel space. Background Technology

[0002] Recently, PC double walls have been developed and are being used for large-scale underground exterior panels, primarily in semiconductor factories where rapid construction and high quality are required. The scope of application for PC double walls is expanding due to their rapid construction speed and stability, as they eliminate on-site reinforcement and formwork. The general manufacturing method involves constructing one panel first, flipping it over to create the other panel, and integrating them into a single unit.

[0003] This method of separately manufacturing and joining PC double walls has the disadvantage of low productivity and difficulty in ensuring quality because it is made by inverting two panels. In addition, when manufacturing two panels separately, a mold is required for each. Therefore, a method for manufacturing PC double walls that takes into account productivity and quality assurance must be considered.

[0004] The technology forming the background of the present invention is Korean Registered Patent No. 10-1763266 (Patent Document 1), which proposes a "method for manufacturing a twin wall." This method applies a triangular truss along with stirrups between a tension slab and a compression slab to double the bonding strength between the tension slab and the compression slab. However, the above background technology is manufactured by producing the tension slab and the compression slab separately and then connecting them to each other through fittings, which results in low productivity and manufacturing errors, leading to a decline in quality. Prior art literature

[0005] Korean Registered Patent No. 10-1763266 The problem to be solved

[0006] The purpose of the present invention is to provide a PC double wall manufacturing mold and a method for manufacturing a PC double wall using the same, which allows a first PC panel produced in advance to be quickly placed in an accurate position after inversion, thereby ensuring that the second PC panel produced later and the first PC panel face each other without misalignment, thereby improving productivity and quality, and improving the cross-sectional reinforcement of the central part and the composite strength with the concrete to be poured into the panel space. means of solving the problem

[0007] A PC double-wall manufacturing mold according to a suitable embodiment of the present invention comprises: a mold base that supports the manufacturing load of the PC double-wall; a panel formwork frame installed in a square closed state on the upper surface of the mold base to form the PC panel of the PC double-wall; a double-wall lifting support girder that is fixedly installed and supported on the upper surface of the mold base, arranged in parallel with a certain height along the longitudinal directions on both sides of the perimeter of the formwork frame; a long-side panel support and a short-side panel support, each arranged inside the double-wall lifting support girder along the perimeter of the formwork frame to support the PC double-wall lifted in an inverted state during manufacturing; and a plurality of lifting rods mounted on the upper surface of the double-wall lifting support girder to be used for installing the structure of the PC double-wall or for lifting.

[0008] In addition, the mold base is characterized by being constructed such that C-shaped steel sections made of steel are joined in a rectangular shape, and a formwork bottom plate is joined to the upper surface thereof.

[0009] In addition, the formwork is characterized by being composed of a short-side concrete sealing member installed facing the short-side side of the upper surface of the mold base, a short-side concrete sealing member installed facing the long-side side of the upper surface of the mold base, and a long-side concrete sealing member installed detachably via bolt connection to the formwork bottom plate side.

[0010] In addition, the double-wall lifting support girder is characterized by being fixedly installed on the upper end of a girder support column that is vertically installed at a mutually predetermined interval on the upper surface of the mold base.

[0011] In addition, in order to invert the PC double wall formed with the first PC panel and place it at a set production position of the production mold, a long-side stopper is installed on one of the long-side panel supports of the double row, and a short-side stopper is additionally installed on the short-side panel supports.

[0012] In addition, the method for manufacturing a PC double wall using a PC double wall manufacturing mold according to an embodiment of the present invention is characterized by comprising the steps of: (a) arranging reinforcing bars inside a formwork frame, and then hanging a pair of reinforcing connection plates facing each other on the reinforcing bars arranged at a certain interval and installing them along the central longitudinal direction; (b) pouring concrete into the formwork frame to produce a first PC panel; (c) lifting the first PC panel to remove it from the formwork using the exposed portion of the reinforcing connection plate; (d) arranging reinforcing bars again inside the formwork frame, and then supporting the first PC panel in an inverted state on a long-side panel support and a short-side panel support so that the reinforcing connection plate is positioned on the reinforcing bars; (e) pouring concrete into the formwork frame to produce a second PC panel; and (f) connecting a lifting device to the first PC panel to lift the second PC panel to remove it from the formwork.

[0013] In addition, in step (d) above, the pouring position is determined by bringing the first PC panel into close contact with the long side stopper on the long side panel support side and the short side stopper on the short side panel support side. Effects of the invention

[0014] According to the PC double-wall manufacturing mold of the present invention and the method for manufacturing a PC double-wall using the same, by ensuring that a first PC panel produced in advance is quickly placed in an accurate position in the manufacturing mold after inversion, the second PC panel produced subsequently and the first PC panel are manufactured without misalignment when facing each other, thereby improving productivity and quality.

[0015] In addition, the PC double wall produced according to the present invention improves cross-sectional reinforcement of the central part and composite strength with the concrete to be poured in the panel space through the installation of reinforcing connecting plates and reinforcing connecting bars. Brief explanation of the drawing

[0016] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description thereof; therefore, the present invention should not be interpreted as being limited only to the matters described in the attached drawings. FIG. 1 is an exemplary diagram of a PC double-wall manufacturing mold according to an embodiment of the present invention. FIG. 2a is a front view of a PC double-wall manufacturing mold according to an embodiment of the present invention. FIG. 2b is a side view of FIG. 2a. FIG. 3a is a diagram showing the state of manufacturing a first panel in the process of manufacturing a PC double wall according to an embodiment of the present invention. FIG. 3b is a side view of FIG. 3a. FIG. 4 is a diagram showing the state of a first panel, originally manufactured, being inverted and lifted during the manufacturing process of a PC double wall according to an embodiment of the present invention. FIGS. 5A and 5B are state diagrams before and after the first panel, which is first manufactured in the process of manufacturing a PC double wall according to an embodiment of the present invention, is inverted and placed in a PC double wall manufacturing mold. FIG. 6 is a diagram showing the manufacturing process of a PC double wall according to an embodiment of the present invention, in which a second panel is being manufactured. FIG. 7 is a longitudinal cross-sectional view of a PC double wall manufactured using a PC double wall manufacturing mold according to an embodiment of the present invention. Specific details for implementing the invention

[0017] The present invention will be described in detail below with reference to embodiments shown in the attached drawings, but the presented embodiments are exemplary for a clear understanding of the present invention and the present invention is not limited thereto.

[0018] A PC double wall manufacturing mold (100) according to the present embodiment comprises, as shown in FIGS. 1 to 4, a mold base (110) that supports the manufacturing load of a PC double wall (10), a panel formwork frame (120) that is installed in a square closed state on the upper surface of the mold base (110) to form a PC panel of the PC double wall (10), a double wall lifting support girder (130) that is fixedly installed and supported on the upper surface of the mold base (110) and arranged in parallel with a certain height along the longitudinal direction on both sides of the formwork frame (120), and a long side panel support (140) and a short side panel support (150) that are respectively arranged inside the double wall lifting support girder (130) along the perimeter of the formwork frame (120) to support the PC double wall (10) lifted in an inverted state during manufacturing; It includes a plurality of lifting platforms (160) that are mounted on the upper surface of the double wall lifting support girder (130) and used for installing or lifting the structure of the PC double wall (10).

[0019] The mold base (110) has sufficient strength and surface area to support the production load of the PC double wall (10). The mold base (110) is constructed by joining a rectangular shape of a U-shaped steel member (112) made of steel, and joining a formwork bottom plate (114) that provides a bottom surface for the poured concrete to the upper surface thereof.

[0020] The formwork frame (120) is installed to produce the first and second PC panels (11, 12) of the PC double wall (10). The illustrated formwork frame (120) consists of a short-side concrete sealing material (122) installed facing the short side of the upper surface of the mold base (110), and a long-side concrete sealing material (124) installed facing the long side of the upper surface of the mold base (110) and detachably installed via bolt connection to the short-side concrete sealing material (122) and the formwork bottom plate (114). Therefore, after concrete is poured into the formwork frame (120) and curing is completed, the formwork frame (120) can be removed.

[0021] The double-wall lifting support girder (130) is fixedly installed on the upper end of the girder supports (132) that are installed vertically at a predetermined distance from each other on the upper surface of the mold base (110). The double-wall lifting support girder (130) is made of H-shaped steel, but is not limited to this cross-sectional shape. The long-side panel support (140) and the short-side panel support (150) are fixedly installed on the upper end of the support supports (144, 154) that are installed vertically at a predetermined distance from each other inside the girder supports (132) on the upper surface of the mold base (110). At this time, the double-wall lifting support girder (130) is installed at a relatively higher position than the long-side panel support (140). That is, the upper surface height (h) of the double wall lifting support girder (130) has a value obtained by adding the thickness (t) of the first panel (11) or the second panel (12) of the PC double wall (10) to the upper surface height (h1) of the long side panel support (140).

[0022] That is, the upper surface height (h) of the double wall lifting support girder (130) = upper surface height (h1) of the long side panel support (140) + thickness (t) of the first panel (11) or the second panel (12).

[0023] Here, in order to invert the PC double wall (10) formed with the first PC panel (11) and place it at a set production position of the production mold (100), it is preferable that a long side stopper (142) be installed on one of the long side panel supports (140) of the double row, and a short side stopper (152) be further installed on the short side panel supports (150).

[0024] Accordingly, as shown in FIGS. 5 and 6, the PC double wall (10) formed with the first PC panel (11) is inverted so that the long side of the first PC panel (11) is in close contact with the long side stopper (142) and the short side of the first PC panel (11) is in close contact with the short side stopper (152), thereby automatically aligning the position to manufacture the second PC panel (11), and as a result, the manufacturing quality of the PC double wall (10) is improved.

[0025] A method for manufacturing a PC double wall (10) using a PC double wall manufacturing mold (100) configured in this way is described sequentially.

[0026] First, as shown in FIG. 3a, reinforcing bars (11a) are arranged inside the formwork frame (120), and then a pair of reinforcing connecting plates (13, 13) facing each other are placed along the central longitudinal direction by hanging them on the reinforcing bars (11a) arranged at a certain interval. Here, the reinforcing bars (11a) refer to main reinforcing bars arranged along the longitudinal direction of the formwork frame (120) and transverse reinforcing bars arranged perpendicular to the main reinforcing bars (width direction). At this time, the reinforcing connecting plates (13, 13) are installed with their bent ends in contact with the lower part of the main reinforcing bars. At this time, a first joint connecting bar (16) may be further arranged on the long side inside the formwork frame (120). The first joint connecting bar (16) is installed so that a part of it is embedded in the concrete layer, and another part is installed so that it extends beyond the concrete layer and is exposed outside the side for a certain distance. The first joint connecting rod (16) is used for joining connections between adjacent PC double walls (10 and 10).

[0027] Next, concrete is poured into the formwork (120) and cured to produce the first PC panel (11).

[0028] Next, after dismantling the formwork frame (120), the first PC panel (11) is lifted out of the formwork using the exposed portion of the reinforcing connecting plate (13,13). This can be achieved by bolting the upper portion of the reinforcing connecting plate (13,13) to the lifting platform (160) and then lifting the lifting platform (160).

[0029] Next, as shown in FIG. 4, reinforcing bars (12a) are re-arranged inside the formwork frame (120), and then the first PC panel (11) is inverted and supported on the long-side panel support (140) and the short-side panel support (150) so that the reinforcing connecting plate (13, 13) is positioned on the arranged reinforcing bars (12a). A separate inversion device not shown may be used for inverting the first PC panel (11).

[0030] At this stage, as shown in FIG. 5b, it is preferable to bring the first PC panel (11) into close contact with the long side stopper (142) on the long side panel support (140) and the short side stopper (152) on the short side panel support (150) so that the accurate pouring position is determined.

[0031] At this time, a second joint connecting reinforcement (16a) may be further arranged on the long side inside the formwork frame (120). The second joint connecting reinforcement (16a) is installed so that a part of it is embedded in the concrete layer, and another part is installed so that it extends beyond the concrete layer and is exposed to the side for a certain distance. The second joint connecting reinforcement (16a) is used for joint connection between adjacent PC double walls (10 and 10).

[0032] Next, as shown in Fig. 6, concrete is poured into the formwork frame (120) to produce the second PC panel (12).

[0033] Next, after dismantling the formwork frame (120), a lifting device (160) is connected to the first PC panel (11) to lift the second PC panel (12) to remove it, thereby completing the production of the PC double wall (10).

[0034] When using such a manufacturing method, the quality is improved by manufacturing the second PC panel (12) by placing it in the correct position on the PC double-wall manufacturing mold (100) in an inverted state after manufacturing the first PC panel (11).

[0035] The PC double wall (10) produced by this method includes first and second PC panels (11, 12) formed facing each other by pouring concrete of a certain thickness onto reinforcing bars (11a, 12a) arranged as in FIG. 7, reinforcing connecting plates (13, 13) that are installed symmetrically with respect to the center cross-section at regular intervals in the longitudinal direction, with one end embedded in the concrete layer on the first PC panel (11) side and the other end embedded in the concrete layer on the second PC panel (12) side, and square reinforcing connecting bars (14, 14) that are closed in a square shape, with one section covering a part of the reinforcing bar on the first PC panel (11) side and embedded in the concrete layer, and the other section embedded in the concrete layer on the second PC panel (12) side and installed symmetrically with respect to the center cross-section at regular intervals in the longitudinal direction.

[0036] Additionally, it may further include a joint connecting member (16, 16) in which one end is embedded in one side of each of the first and second PC panels (11, 12) and the other end is located on the inner side facing the first and second PC panels (11, 12) and exposed laterally for a certain section.

[0037] In addition, the cross-section of the PC double wall (10) can be further reinforced by installing a truss girder (17) around the reinforcing connection plate (13 and 13) facing each of the first and second PC panels (11, 12) and embedding it in the concrete layer.

[0038] Although the present invention has been described in detail with reference to the presented embodiments, those skilled in the art may make various modifications and variations without departing from the technical spirit of the present invention by referring to the presented embodiments. The present invention is not limited by such modifications and variations, but is limited only by the claims appended below. Explanation of the symbols

[0039] 10: PC Double Wall 11: 1st PC panel 12: 2nd PC panel 13: Reinforcement connection plate 14: Rectangular reinforcing connector 16,16a: 1st and 2nd joint connecting muscles 100: PC double-wall manufacturing mold 110: Mold base 120: Panel formwork 130: Double-walled lifting support girder 140: Long side panel support 142: Long side stopper 150: Short side panel support 152: Short-side stopper 160: Lifting platform

Claims

Claim 1 A mold (100) for manufacturing a PC double wall (10) comprises: a mold base (110) that supports the manufacturing load of the PC double wall (10); a panel formwork frame (120) that is installed in a closed square state on the upper surface of the mold base (110) to form the first panel (11) and the second panel (12) of the PC double wall (10); a double wall lifting support girder (130) that is fixedly installed on the upper end of a girder support (132) that is vertically erected at a predetermined distance from each other on the upper surface of the mold base (110), and is arranged parallel to each other at a certain height along the longitudinal direction on both sides of the perimeter of the formwork frame (120) and is supported and fixedly installed on the upper surface of the mold base (110); and a double wall lifting support girder (130) that is each arranged inside the double wall lifting support girder (130) along the perimeter of the formwork frame (120), and the mold The structure comprises: a long-side panel support (140) and a short-side panel support (150) fixedly installed on the upper ends of support posts (144, 154) that are vertically installed at a mutually predetermined interval inside the upper girder support (132) of the base (110) to support the PC double wall (10) lifted in an inverted state during manufacturing; and a plurality of lifting supports (160) mounted on the upper surface of the double wall lifting support girder (130) and used for installing the structure of the PC double wall (10) or for lifting, wherein the upper surface height (h) of the double wall lifting support girder (130) is the value obtained by adding the thickness (t) of the first panel (11) or the second panel (12) of the PC double wall (10) to the upper surface height (h1) of the long-side panel support (140), and the PC double wall (10) with the first PC panel (11) formed is inverted to manufacture A PC double-wall manufacturing mold characterized by having a long-side stopper (142) installed on one of the long-side panel supports (140) of a double row of long-side panel supports (140) and a short-side stopper (152) installed on the short-side panel supports (150) in order to place the mold (100) at a set manufacturing position. Claim 2 In claim 1, the PC double-wall manufacturing mold is characterized in that the mold base (110) is formed by joining a C-shaped steel member (112) made of steel in a rectangular shape, and joining a formwork bottom plate (114) to the upper surface thereof. Claim 3 In claim 1, the PC double wall manufacturing mold is characterized in that the formwork frame (120) is composed of a short-side concrete sealing material (122) installed facing the short-side side of the upper surface of the mold base (110), and a long-side concrete sealing material (124) installed facing the long-side side of the upper surface of the mold base (110) and detachably installed through bolt connection to the short-side concrete sealing material (122) and the formwork bottom plate (114). Claim 4 delete Claim 5 delete Claim 6 A method for manufacturing a PC double wall using a PC double wall manufacturing mold described in claim 1, comprising: (a) a step of arranging reinforcing bars (11a) inside a formwork frame (120), and then placing a pair of reinforcing connecting plates (13, 13) facing each other at a certain interval on the reinforcing bars (11a) and installing them along the central longitudinal direction; (b) a step of pouring concrete into the formwork frame (120) to manufacture a first PC panel (11); (c) a step of lifting the first PC panel (11) to remove the formwork using the exposed portions of the reinforcing connecting plates (13, 13); and (d) a step of arranging reinforcing bars (12a) again inside the formwork frame (120), and then supporting the first PC panel (11) in an inverted state on a long-side panel support (140) and a short-side panel support (150) on the reinforcing bars (12a). A method for manufacturing a PC double wall using a PC double wall manufacturing mold, comprising: a step of positioning reinforcing connection plates (13, 13); (e) a step of pouring concrete into a formwork frame (120) to produce a second PC panel (12); and (f) a step of connecting a lifting device (160) to the first PC panel (11) to lift and remove the second PC panel (12); wherein, in step (d), the pouring position is determined by bringing the first PC panel (11) into close contact with the long side stopper (142) on the long side panel support (140) side and the short side stopper (152) on the short side panel support (150). Claim 7 delete

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