KR101493767B1 - PSC girder of adjustable curvature curved using the PSC girder for steel production dies and production method - Google Patents

PSC girder of adjustable curvature curved using the PSC girder for steel production dies and production method Download PDF

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Publication number
KR101493767B1
KR101493767B1 KR20130051262A KR20130051262A KR101493767B1 KR 101493767 B1 KR101493767 B1 KR 101493767B1 KR 20130051262 A KR20130051262 A KR 20130051262A KR 20130051262 A KR20130051262 A KR 20130051262A KR 101493767 B1 KR101493767 B1 KR 101493767B1
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South Korea
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steel
girder
plate
psc
curved
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KR20130051262A
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Korean (ko)
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KR20140132135A (en
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노우현
노경범
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우경기술 주식회사
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • E01D2101/26Concrete reinforced
    • E01D2101/28Concrete reinforced prestressed

Abstract

The present invention relates to a method of making curvature adjustments for interchangeable use of each inner and outer steel formwork segment and steel formwork segment forming a PSC U girder or an I girder forming steel formwork, with a curved PSC U girder or I girder having different radii of curvature The present invention provides a method of manufacturing a curved PSC girder and a method of manufacturing a curved PSC girder using the same.
In order to accomplish the above object, the present invention provides a curved PSC girder forming steel formwork capable of curvature adjustment, the method comprising: forming a PSC girder by joining a steel formwork segment for manufacturing a PSC girder, And a filler material having a predetermined angle is inserted between each joint portion where the steel form segments are connected and assembled to form a curved steel formwork.
According to another aspect of the present invention, there is provided a method of manufacturing a PSC girder using a steel mold for making a curved PSC girder capable of adjusting curvature, the method comprising: fabricating and assembling a reinforcing bar for a PSC girder at a site of a PSC girder; A step of inserting a filler material having a constant angle changing a cross section of a curved steel formwork segment capable of curvature adjustment and connecting them to each other; A step of fixing a reinforcing bar and a form by installing a curved steel form mold capable of adjusting the curvature around the reinforcing bar for manufacturing the assembled PSC girder; Placing and curing the concrete in the curved steel formwork capable of adjusting the curvature; And disassembling the curved steel formwork capable of adjusting the curvature.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of making a curved PSC girder and a curved PSC girder using the curved PSC girder,

The present invention relates to a steel formwork for making a curved PSC girder capable of curvature adjustment and a method of making a curved PSC girder using the same. More particularly, the present invention relates to a method of making a curved PSC girder by inserting a filler having a certain angle, And a method of making a curved PSC girder using the same, and a method of manufacturing a curved PSC girder using the same.

Generally, a steel formwork for a PSC girder is constructed by assembling and connecting a plurality of steel formwork segments.

Then, concrete is placed and cured in the steel formwork to produce a linear PSC girder.

On the other hand, a curved PSC girder was constructed by installing a linear PSC girder in a gentle arc direction on a pier, and by applying a curvature radius.

Also, in case that a curved PSC U girder or I girder is manufactured by forming a steel mold for a PSC girder which can rarely control the curvature at home or abroad, rather than a combination of a steel form segment by a complicated mechanical structure and a hydraulic jack, there was.

However, in order to manufacture the above-mentioned curved PSC girder, a large-scale investment equivalent to the plant facility must be preceded, and the curved PSC girder manufactured at the factory must be carried to the construction site, have.

That is, since the steel formwork can not be planted in the factory or the steel formwork can not be moved, it is necessary to manufacture and install the curved PSC girder at the factory so that the construction cost is high and the transportation cost is high Economy was disadvantageous.

Therefore, in the case of PSC I girder, PSC I girder is manufactured economically by assembling and disassembling the steel form segment by putting straight steel formwork on the site. However, in case of PSC U girder, There are almost no cases of construction and construction in the city.

This is because it is very difficult to operate a large scale steel formwork.

Therefore, if a curved PSC U girder or I girder can be constructed by a simple method such as a straight PSC U girder or an I girder construction method currently applied at a construction site, it can be replaced with an expensive steel bridge, contributing to the reduction of the national budget I think it is very big.

Here, a method of constructing a steel formwork segment capable of producing the curved PSC girder is a key element.

That is, in the method of manufacturing the curved PSC girder, a curved PSC girder can be manufactured by forming the steel form segments into a curved shape, and the steel form fixed with a certain curvature can be manufactured only with a PSC girder having a certain curvature, The PSC girder having a different curvature, that is, a PSC girder having a different curvature can not be manufactured, and a separate steel form segment corresponding to the changed curvature must be manufactured, so that the economical efficiency is reduced due to excessive input of the steel form segment, .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a PSC U girder or an I girder forming each inner and outer steel formwork segment and a steel formwork segment forming a steel formwork, Type PSC U girder or I girder, and to provide a curved PSC girder forming method and a curved PSC girder making method using the same.

In order to accomplish the above object, the present invention provides a curved PSC girder forming steel formwork capable of curvature adjustment, the method comprising: forming a PSC girder by joining a steel formwork segment for manufacturing a PSC girder, And a filler material having a predetermined angle is inserted between each joint portion where the steel form segments are connected and assembled to form a curved steel formwork.

According to another aspect of the present invention, there is provided a method of manufacturing a PSC girder using a steel mold for making a curved PSC girder capable of adjusting curvature, the method comprising: fabricating and assembling a reinforcing bar for a PSC girder at a site of a PSC girder; A step of inserting a filler material having a constant angle changing a cross section of a curved steel formwork segment capable of curvature adjustment and connecting them to each other; A step of fixing a reinforcing bar and a form by installing a curved steel form mold capable of adjusting the curvature around the reinforcing bar for manufacturing the assembled PSC girder; Placing and curing the concrete in the curved steel formwork capable of adjusting the curvature; And disassembling the curved steel formwork capable of adjusting the curvature.

INDUSTRIAL APPLICABILITY As described above, the curved PSC girder forming steel formwork and the curved PSC girder forming method using the same according to the present invention have the following effects.

First, the curved PSC girder according to the present invention can form a curved steel form with curvature at the lowest cost.

Second, the present invention makes it possible to manufacture a curved PSC girder at the lowest cost and easiness in the construction site of the bridge regardless of the site conditions.

Thirdly, according to the present invention, a curved PSC girder having various radii of curvature can be manufactured by simply replacing the filler material installed between the steel formwork segments.

Fourth, the present invention can be used for manufacturing a linear PSC girder.

1 is a perspective view showing a state before assembling an outer steelwork formwork for making a curved PSC U girder according to the present invention,
FIG. 2 is a plan view showing a state before assembling an outer steelwork formwork for making a curved PSC U girder according to the present invention,
3 is a detailed view showing an enlarged view of the portion "A" in Fig. 2,
FIG. 4 is a side view of an outer steel formwork for making a curved PSC U girder according to the present invention,
5 is a sectional view taken along the line AA in Fig. 4,
Fig. 6 is a sectional view taken along line BB of Fig. 4,
Fig. 7 is a cross-sectional view taken along line CC of Fig. 4,
8 is a perspective view showing a filler material of an outer steelwork formwork for making a curved PSC U girder according to the present invention,
FIG. 9 is a perspective view showing a state after assembling an outer steelwork formwork for manufacturing a curved PSC U girder according to the present invention, FIG.
FIG. 10 is a plan view showing a state after assembling an outer steelwork formwork for making a curved PSC U girder according to the present invention, FIG.
11 is an enlarged view of the portion "A" of Fig. 10,
FIG. 12 is a side view showing an assembled state of an outer steelwork formwork for making a curved PSC U girder according to the present invention,
13 is a sectional view taken along the line AA in Fig. 12,
Fig. 14 is a sectional view taken along line BB of Fig. 12,
Fig. 15 is a cross-sectional view taken along line CC of Fig. 12,
16 is a perspective view showing a filler material of an outer steelwork formwork for making a curved PSC U girder according to the present invention,
17 is a perspective view showing a state before assembling the inner and outer steel formwork for making a curved PSC U girder according to the present invention,
18 is a perspective view showing the inner and outer steel formwork for assembling the curved PSC U girder after assembling according to the present invention,
FIG. 19 is a perspective view showing a state before assembling a steel mold for making a curved PSC I girder according to the present invention. FIG.
20 is a plan view showing a state before assembling a steel mold for making a curved PSC I girder according to the present invention,
FIG. 21 is a detailed view showing the "A" portion of FIG. 20 in an enlarged view,
FIG. 22 is a side view showing a pre-assembled state of a steel mold for making a curved PSC I girder according to the present invention,
23 is a sectional view taken along the line AA in Fig. 22,
Fig. 24 is a sectional view taken along line BB of Fig. 22,
25 is a sectional view taken along line CC of Fig. 22,
26 is a perspective view showing a filler material of a steel mold for making a curved PSC I girder according to the present invention,
FIG. 27 is a perspective view showing a state after assembling a steel mold for making a curved PSC I girder according to the present invention, FIG.
28 is a plan view showing a state after assembling a steel mold for making a curved PSC I girder according to the present invention,
FIG. 29 is a detailed view showing the "A" portion of FIG. 28 in an enlarged view,
30 is a side view showing a state after assembling a steel mold for making a curved PSC I girder according to the present invention,
31 is a sectional view taken along the line AA in Fig. 30,
32 is a sectional view taken along line BB of Fig. 30,
33 is a cross-sectional view taken along the line CC of Fig. 30,
34 is a perspective view showing a filler material of a steel mold for making a curved PSC I girder according to the present invention,
35 is a perspective view showing a state before the assembly of a steel mold for making a curved PSC I girder according to the present invention,
36 is a perspective view showing a state after assembling a steel mold for making a curved PSC I girder according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 36, a curved PSC girder forming steel formwork capable of curvature adjustment according to the present invention is a steel formwork for manufacturing a PSC girder constructed by connecting a steel formwork segment for manufacturing a PSC girder, The PSC girder-making steel formwork is constructed by inserting a filler material having a certain angle between the joints to which the form segments are connected and assembled.

In this case, the filler material having a certain angle inserted between the joint portions of the PSC girder-making steel mold segments is formed so as to have a reduced cross-section from the outside to the inside with reference to the radius of curvature.

On the other hand, the curved steel formwork can be used as a straight steel formwork as well unless a filler material is used.

That is, according to the present invention, a curved PSC girder forming steel formwork capable of adjusting curvature is formed by using a steel segment for manufacturing a conventional PSC girder while maintaining a constant angle between the steel segments of the assembled portion, By assembling and assembling the ashes, it is possible to assemble the steel mold for making the PSC girder having a constant curvature.

In this case, when the steel form die segment is used as it is and the filler material having a constant angle changing in section, which is manufactured in accordance with the designed radius of curvature, is inserted between the joint portions of the steel form die segment, The steel form according to the radius can be assembled and completed.

In addition, since the steel form segments are continuously used, only the filler material having an angle that changes the cross section is produced differently according to the radius of curvature, and if used, the conventional steel form segments can be used at any time so that the conventional steel form segments can be used at any time. PSC U girder or I girder with curvature applied in the field can be easily manufactured and constructed.

In addition, the filler material inserted into the steel mold segment has a structure in which the cross section is reduced from the outside to the inside with respect to the radius of curvature, and the radius of curvature can be varied according to the angle size of the filler material. And the angle is applied so that the cross section is larger at the outer side and the cross section is decreased at the inner side.

When the filler material is not used, it can be used for producing a PSC girder for a straight line.

The PSC girder using the steel mold for making the curvature-adjustable curvilinear PSC is manufactured by the following method.

A method of manufacturing a curved PSC girder and a curved PSC girder using the same according to the present invention comprises the steps of assembling and assembling a reinforcing bar for a PSC girder at a site of a PSC girder manufacturing site; A step of inserting a filler material having a constant angle changing a cross section of a curved steel formwork segment capable of curvature adjustment and connecting them to each other; A step of fixing a reinforcing bar and a form by installing a curved steel form mold capable of adjusting the curvature around the reinforcing bar for manufacturing the assembled PSC girder; Placing and curing the concrete in the curved steel formwork capable of adjusting the curvature; And disassembling the curved steel formwork capable of adjusting the curvature.

Hereinafter, the present invention will be described in more detail with reference to various embodiments.

[Steel formwork for making curved PSC U girder and method of making PSC U girder using it]

FIG. 1 is a perspective view showing a state before assembling an outer steelwork formwork for forming a curved PSC U girder according to the present invention, and FIG. 2 is a state before assembling an outer steelwork formwork for forming a curved PSC U girder according to the present invention Fig. 4 is a side view showing a state before assembling the outer steelwork formwork for forming a curved PSC U girder according to the present invention, Fig. Fig. 7 is a cross-sectional view taken along the line CC of Fig. 4. Fig. 8 is a perspective view showing a filler material of the outer steelwork formwork for making a curved PSC U girder according to the present invention. Fig. FIG. 9 is a perspective view showing a state after assembling an outer steelwork formwork for making a curved PSC U girder according to the present invention, and FIG. 10 is a view showing a state after assembling an outer steelwork formwork for making a curved PSC U girder according to the present invention 11 is an enlarged view of the "A" portion of Fig. 10 Fig. 12 is a side view showing the assembled outer steel formwork for forming a curved PSC U girder according to the present invention, Fig. 13 is a sectional view taken along line AA in Fig. 12, Fig. 14 is a sectional view taken along the line BB in Fig. Fig. 16 is a perspective view showing a filler material of an outer steelwork formwork for forming a curved PSC U girder according to the present invention, and Fig. 17 is a perspective view showing the inner and outer steels for making a curved PSC U girder according to the present invention FIG. 18 is a perspective view showing the assembled inner and outer steel formwork for making a curved PSC U girder according to the present invention. FIG.

As shown in these drawings, a steel formwork U for forming a curved PSC U girder according to the present invention comprises: a support plate 100 having a uniform curvature on the same plane; An outer steel formwork segment 200 having a plurality of longitudinally facing steel mold segments 200 spaced apart from each other at a predetermined interval on the support plate 100; An outer steel form segment filler material 300 inserted along the longitudinal direction between the outer steel form segments 200; An inner steel form segment 400 having a plurality of longitudinally arranged steel plates at a predetermined height on the support plate 100 inside the outer steel formwork segment 200; And an inner steelwork form segment filler material 500 inserted along the longitudinal direction between the inner steel formwork segments 400.

That is, the steel formwork U for forming a curved PSC U girder according to the present invention comprises a support plate 100, an outer steel form segment 200, an outer steel form segment filler material 300, an inner steel form segment 400, And the inner steel mold segment filler material 500 is organically bonded.

Here, the support plate 100 is made of a steel plate having a uniform curvature while being formed on the same plane.

In addition, the outer steel formwork segment 200 has an inclined wedge plate 210 having a constant inclined surface and disposed vertically; A horizontal plate 220 having a predetermined length extending outward from an upper end of the warp woven board 210; And a vertical plate 230 having a predetermined length extending from the end of the horizontal plate 220 to a straight upper portion.

The outer steel mold segment filler material 300 has a predetermined inclined surface and is vertically disposed. A horizontal plate 320 having a predetermined length extending outwardly from an upper end of the warp widthwise plate 310; A vertical plate 330 having a predetermined length extending from the end of the horizontal plate 320 to the upper portion of the vertical plate 330; And a bolt hole 340 formed in the inclined wedge plate 310, the horizontal plate 320, and the vertical plate 330.

In addition, the outer steel form segment filler material 300 has a wider outer side with a radius of curvature and a wedge shape with a narrow inner side.

The inner steel mold segment 400 has a U-shaped cross-section as a whole, and includes a lower plate 410 disposed at a lower portion thereof; And an inclined wedge plate 420 having a predetermined inclination and a predetermined length from both sides of the lower plate 410.

In addition, the inner steel form segment filler material 500 includes an inclined wedge plate 510 having a constant slope and a predetermined length; And a bolt hole 520 formed in the inclined wing plate 510.

The outer steel form die filler material 300 and the inner steel form die filler material 500 are integrally formed.

The curved PSC U girder forming steel formwork U according to the present invention having the above-described structure is assembled and assembled while using the inner and outer steel formwork segments 400 and 200 for the conventional PSC U girder as it is. The filler materials 300 and 500 having a constant angle varying in cross section between the inner and outer steel form segments 400 and 200 are manufactured and assembled into a steel formwork for producing a PSC U girder having a constant curvature U) can be assembled and configured.

In such a curved PSC U girder forming steel formwork U, the inner and outer steel formwork segments 400 and 200 are formed by using the conventional inner and outer steel formwork U girder segments 400 and 200 as they are, When the filler materials 300 and 500 having a constant angularity varying in cross section are assembled by inserting the inner and outer steel mold segments 400 and 200 into a curved shape according to a desired radius of curvature, Type PSC U girder steel formwork (U) can be assembled and completed.

When the inner and outer steel mold segments 400 and 200 are continuously used and only the filler materials 300 and 500 having the angles varying in cross section are manufactured differently according to the radius of curvature, Since the steel form segments (400, 200) can be used continuously, it is possible to easily manufacture and construct PSC U girder with curvature at the construction site, not the factory at the lowest cost.

The filler materials 300 and 500 inserted into the inner and outer steel mold segments 400 and 200 have a shape in which the cross section decreases from the outside toward the inside with reference to the radius of curvature. It is a wedge shape with different curvature radii according to the angular size and different cross-sections and angles depending on the respective radius of curvature, with a larger cross-section at the outer side and a smaller cross-section at the inner side.

It is also noted that, when the filler materials 300 and 500 are not used, they can also be used for making straight PSC U girders.

Hereinafter, the construction of the PSC U girder using the steel mold for making the curved PSC U girder according to the present invention will be described.

A method of manufacturing a PSC U girder using a steel formwork for making a curved PSC U girder according to the present invention is a method of making a curved PSC U girder using a steel formwork for making a curved PSC U girder according to any one of claims 1 to 7, A method of manufacturing a U-girder, comprising: installing a support plate (100) on a site; Assembling the PSC girder reinforcing bars on the support plate 100; Placing a plurality of inner steel form segments (400) along the longitudinal direction on the PSC girder reinforcing bars and fixing the inner steel form form filler material (500) between the inner steel form segments (400); Placing a plurality of outer steel form segments 200 along the longitudinal direction on both sides of the PSC girder reinforcing bars and fixing the outer steel form segment filler material 300 between the outer steel form segments 200; Placing and curing the concrete between the outer steel form segment (200) and the inner steel form segment (400); A curved PSC girder is manufactured by demolding the steel formwork (U) for making the curved PSC U girder.

That is, in the method of manufacturing a PSC U girder using a steel formwork for making a curved PSC U girder according to the present invention, a pedestal 100 is installed on a site, a PSC girder reinforcing bar is assembled on the pedestal 100, A plurality of inner steel form segments 400 are longitudinally arranged on the PSC girder reinforcing bars and an inner steel form segment filler material 500 is fixed between the inner steel form segments 400. Then, A plurality of outer steel form segments 200 are disposed on both sides of the outer steel form segments 200 and the outer steel form segment filler material 300 is fixed between the outer steel form segments 200. The outer steel form segments 200 200 and the inner steel formwork 400. The curved PSC U girder is manufactured by demolding the steel formwork U for forming the curved PSC U girder.

The PSC U girder fabrication method using the steel formwork for making a curved PSC U girder according to the present invention having the above-described steps uses the inner and outer steel formwork segments 400 and 200 for the conventional PSC U girder The filler materials 300 and 500 having a constant angle varying in section between the inner and outer steel form segments 400 and 200 of the assembly part to be connected and assembled are manufactured and assembled into a PSC U girder having a constant curvature (U) is assembled and configured.

In the method of manufacturing a curved PSC U girder for manufacturing a steel formwork U, the inner and outer steel form segments 400 and 200 are formed by using the conventional inner and outer steel formwork U girder segments 400 and 200 as they are, When the filler materials 300 and 500 having a constant angle and changing the cross-section manufactured according to the radius are inserted and assembled between the inner and outer steel mold segments 400 and 200, a desired curvature radius The curved PSC U girder steel formwork U can be assembled and completed.

When the inner and outer steel mold segments 400 and 200 are continuously used and only the filler materials 300 and 500 having the angles varying in cross section are manufactured differently according to the radius of curvature, Since the steel form segments (400, 200) can be used continuously, it is possible to easily manufacture and construct PSC U girder with curvature at the construction site, not the factory at the lowest cost.

The filler materials 300 and 500 inserted into the inner and outer steel mold segments 400 and 200 have a shape in which the cross section decreases from the outside toward the inside with reference to the radius of curvature. It is a wedge shape with different curvature radii according to the angular size and different cross-sections and angles depending on the respective radius of curvature, with a larger cross-section at the outer side and a smaller cross-section at the inner side.

When the filler material 300 or 500 is not used, it can be used also for manufacturing a straight PSC U girder.

[Steel formwork for making curved PSC I girder and method of making PSC I girder using it]

FIG. 19 is a perspective view of a steel mold for making a curved PSC I girder according to the present invention. FIG. 20 is a plan view of a steel mold for making a curved PSC I girder according to the present invention, Fig. 21 is a detailed view of the portion "A" in Fig. 20 showing an enlarged view, Fig. 22 is a side view showing a state before assembling a steel mold for forming a curved PSC I girder according to the present invention, Fig. 24 is a sectional view taken along line BB of Fig. 22, Fig. 25 is a sectional view taken along a line CC of Fig. 22, Fig. 26 is a perspective view showing a filler material of a steel mold for forming a curved PSC I girder, FIG. 28 is a plan view showing a state after assembling a steel mold for forming a curved PSC I girder according to the present invention, FIG. 29 is a plan view showing a state after assembly of a curved PSC I girder for manufacturing a curved PSC I girder, 28 is an enlarged detail view of the "A" portion of Fig. Fig. 31 is a sectional view taken along line AA of Fig. 30, Fig. 32 is a sectional view taken along line BB of Fig. 30, Fig. 33 is a sectional view taken along line CC of Fig. 30 34 is a perspective view showing a filler material of a steel formwork for making a curved PSC I girder according to the present invention, FIG. 35 is a perspective view showing a state before a steel formwork for making a curved PSC I girder according to the present invention is assembled, Is a perspective view showing a state after assembling a steel mold for making a curved PSC I girder according to the present invention.

As shown in these drawings, a steel form I for making a curved PSC I girder according to the present invention comprises: a support plate 100 having a uniform curvature on the same plane; A plurality of steel mold segments 600 arranged in the longitudinal direction so as to face each other with a predetermined gap left on the support plate 100; And a steel form die segment filler material 700 inserted along the longitudinal direction between the steel form die segments 600.

That is, the steel formwork I for forming the curved PSC I girder according to the present invention is a structure in which the support plate 100, the steel formwork segment 600, and the steel formwork segment filler material 700 are combined with each other.

Here, the support plate 100 is made of a steel plate having a uniform curvature while being formed on the same plane.

In addition, the steel formwork segment 600 includes a belly 610 formed of a rectangular steel plate; An upper flange 620 having a predetermined inclination from the upper end of the abdomen portion 610; An upper vertical portion 630 extending vertically upwards from the upper end of the upper flange 620 by a predetermined length; A lower flange 640 having a constant inclination from the lower end of the abdomen 610; And a lower vertical portion 650 extending vertically downward from the lower end of the lower flange 640 by a predetermined length.

The steel mold segment filler material 700 includes a bent plate 710 formed of a rectangular steel plate; An upper flange plate 720 having a predetermined inclination from the upper end of the baffle plate 710; An upper vertical plate 730 extending vertically upwards from the upper end of the upper flange plate 720 by a predetermined length; A lower flange plate 740 having a predetermined inclination from the lower end of the baffle plate 710; A lower end plate (750) extending vertically downward from the lower end of the lower flange plate (740) by a predetermined length; And a bolt hole 760 formed in the upper end flange plate 730, the upper end vertical plate 740 and the lower end vertical plate 750 to have a predetermined diameter, the bolt hole 760 being formed in the upper flange plate 720, the lower flange plate 730, The steel form seal filler material 700 is formed in a wedge shape with a wide outer side on the basis of a radius of curvature and a narrow inner side width.

The steel formwork (I) for making the curved PSC I girder according to the present invention having the above-described structure is a steel formwork of an assembly part connected and assembled while using the conventional steel formwork segment 600 for manufacturing a PSC I girder A filler material 700 having a constant angle formed between the segments 600 is formed, and the filler material 700 is assembled by inserting and assembling the filler material 700. The steel mold I for PSC I girder fabrication having a constant curvature can be assembled and constructed.

In such a curved PSC I girder-making steel formwork I, the steel formwork segment 600 is formed by using a conventional steel formwork segment 600 as it is while maintaining a constant angular cross- When the filler material 700 is inserted and assembled between the steel mold segments 600, it is possible to assemble and complete the steel mold I for the PSC I girder fabrication according to the desired radius of curvature without requiring a large cost.

If only the filler material 700 having an angle that the cross-section changes is continuously used while being used as it is and is made differently according to the radius of curvature and used, the conventional steel formwork segment 600 can be continuously used The PSC I girder with curvature can be easily manufactured and constructed at the construction site rather than the factory at the lowest cost possible.

In addition, the filler material 700 inserted between the steel mold segments 600 has a shape in which the cross section decreases from the outside to the inside with reference to the radius of curvature, and the radius of curvature is changed according to the angle size of the filler material 700 It is a wedge shape which is different shape and different cross section and angle are applied according to each radius of curvature, and the cross section is larger at the outer side and decreased at the inner side.

On the other hand, if the filler material 700 is not used, it can be used as a steel formwork for producing a PSC I girder for a straight line.

Hereinafter, the construction of the PSC I girder using the steel mold for making the curved PSC I girder according to the present invention will be described.

A method of manufacturing a PSC I girder using a steel formwork for making a curved PSC I girder according to the present invention is a method of making a curved PSC I girder using a steel formwork for making a curved PSC I girder according to any one of claims 8 to 11, A method of manufacturing a girder, comprising: installing a support plate (100) on a site; Assembling the PSC girder reinforcing bars on the support plate 100; Disposing a plurality of steel mold segments (600) on both sides of the PSC girder reinforcing bars along the longitudinal direction and fixing the steel mold segment filler material (700) between the steel mold segments (600); Placing and curing concrete in the steel form segment (600); A curved PSC I girder is manufactured by demolding the steel formwork (I) for forming the curved PSC I girder.

That is, in the method of manufacturing a PSC I girder using a steel mold for making a curved PSC I girder according to the present invention, a support plate 100 is installed on the site, a PSC girder reinforcing bar is assembled on the support plate 100, A plurality of steel form segments 600 are disposed on both sides of the PSC girder reinforcing bars along the longitudinal direction and the steel form segment filler material 700 is fixed between the steel form segments 600 and then the steel form segments 600 ), A curved PSC I girder for demolding the above-mentioned curved PSC I girder forming steel form (I) is manufactured.

The method of manufacturing a PSC I girder using the steel formwork for making a curved PSC I girder according to the present invention having the steps as described above is characterized in that the method of manufacturing a steel formwork for a PSC I girder (600) (I) for forming a PSC I girder having a constant curvature can be assembled and assembled by inserting and assembling the filler material 700 having a constant angle formed between the steel mold segments 600 of the assembled portion, Can be configured.

In such a curved PSC I girder-making steel formwork I, the steel formwork segment 600 is formed by using a conventional steel formwork segment 600 as it is while maintaining a constant angular cross- When the filler material 700 is inserted and assembled between the steel mold segments 600, it is possible to assemble and complete the steel mold I for the PSC I girder fabrication according to the desired radius of curvature without requiring a large cost.

If only the filler material 700 having an angle that the cross-section changes is continuously used while being used as it is and is made differently according to the radius of curvature and used, the conventional steel formwork segment 600 can be continuously used The PSC I girder with curvature can be easily manufactured and constructed at the construction site rather than the factory at the lowest cost possible.

In addition, the filler material 700 inserted between the steel mold segments 600 has a shape in which the cross section decreases from the outside to the inside with reference to the radius of curvature, and the radius of curvature is changed according to the angle size of the filler material 700 It is a wedge shape which is different shape and different cross section and angle are applied according to each radius of curvature, and the cross section is larger at the outer side and decreased at the inner side.

On the other hand, if the filler material 700 is not used, it can be used as a steel formwork for making straight PSC I girders.

100: base plate 200: outer steel formwork segment
210: warp wedge plate 220: horizontal plate
230: vertical plate 300: outer steel form die segment filler material
310: warp spring plate 320: horizontal plate
330: Vertical plate 340: Bolt hole
400: inner steel form segment 410: bottom plate
420: warped bob plate 500: inner steel form segment filler material
510: warp webbing 520: bolt ball
600: steel form die segment 610:
620: upper flange 630: upper vertical section
640: Lower flange 650: Lower vertical part
700: Steel mold segment filler material 710:
720: upper flange plate 730: upper vertical plate
740: Lower flange plate 750: Lower vertical plate
760: Bolt hole
I: Steel mold for making curved PSC I girder
U: Steel formwork for making curved PSC U girder

Claims (4)

  1. A PSC girder-making steel formwork in which a steel formwork segment for connection to a PSC girder is connected and assembled,
    The steel mold (U) for making the PSC girder comprises a support plate (100); An outer steel formwork segment 200 having a plurality of longitudinally facing steel mold segments 200 spaced apart from each other at a predetermined interval on the support plate 100; An outer steel form segment filler material 300 inserted along the longitudinal direction between the outer steel form segments 200; An inner steel form segment 400 having a plurality of longitudinally arranged steel plates at a predetermined height on the support plate 100 inside the outer steel formwork segment 200; And an inner steel form die segment filler material 500 inserted along the longitudinal direction between the inner steel form die segments 400,
    The outer steel formwork segment 200 includes an inclined wedge plate 210 having a predetermined inclined surface and disposed vertically, a horizontal plate 220 having a predetermined length extending outward from an upper end of the wedge plate 210, And a vertical plate 230 having a predetermined length extending from an end of the flat plate 220 to a straight upper portion,
    The outer steel form segment filler material 300 includes a warp woven board 310 having a predetermined inclined surface and disposed vertically, a horizontal board 320 having a predetermined length extending outward from an upper end of the warp woven board 310, A vertical plate 330 having a predetermined length extending from an end of the horizontal plate 320 to a straight upper portion and a bolt hole 330 formed in the warp widthwise plate 310, the horizontal plate 320, 340,
    The outer steel form segment filler material 300 has a wider outer side with a radius of curvature and a wedge shape with a narrow inner side,
    The inner steel formwork segment 400 includes a lower plate 410 having a generally U-shaped cross section and disposed at a lower portion thereof and an inclined wedge plate 420 having a constant inclination and length upward from both sides of the lower plate 410 ),
    The inner steel form die filler material 500 includes an inclined wedge plate 510 having a predetermined inclination and a length and a bolt hole 520 formed in the wedge plate 510,
    Wherein the outer steel form die filler material (300) and the inner steel form die filler material (500) are integrally formed.
  2. A PSC girder-making steel formwork in which a steel formwork segment for connection to a PSC girder is connected and assembled,
    The steel mold (I) for making the PSC girder comprises a support plate (100); A plurality of steel mold segments 600 arranged in the longitudinal direction so as to face each other with a predetermined gap left on the support plate 100; And a steel form die segment filler material (700) inserted along the longitudinal direction between the steel form die segments (600)
    The steel mold segment 600 includes an abdomen portion 610 formed of a steel plate, an upper flange 620 having a predetermined inclination from the upper end of the abdomen portion 610, A lower vertical flange 640 having a predetermined inclination from the lower end of the abdomen portion 610 and a lower vertical flange 640 extending vertically downward at a lower end of the lower flange 640, (650)
    The steel form die filler material 700 includes an upper plate 720 having a predetermined inclination from the upper end of the upper plate 720 and a lower flange plate 720 having a predetermined inclination from the upper end of the upper plate 710, A lower flange plate 740 having a predetermined inclination from the lower end of the baffle plate 710 and a lower flange plate 740 extending vertically downward from the lower end of the lower flange plate 740 The upper flange plate 730, the upper vertical plate 740 and the lower vertical plate 750 are formed to have a predetermined diameter and a predetermined diameter is formed in the bending plate 710, the upper flange plate 720, the lower flange plate 730, And a bolt hole 760 formed therein,
    Wherein the steel form die segment filler material (700) is formed in a wedge shape with a wide outer side and a narrow inner side with respect to a radius of curvature.
  3. 3. The method according to claim 1 or 2,
    Characterized in that the steel formwork (U, I) is also used as a straight steel formwork, and is used for curvature-adjustable curved PSC girders.
  4. A method of manufacturing a curved PSC girder by using a curved PSC girder-forming steel formwork according to claim 1 or 2,
    PSC girder construction site Reinforcing bars for PSC girder are fabricated and assembled;
    A step of inserting a filler material having a constant angle changing a cross section of a curved steel formwork segment capable of curvature adjustment and connecting them to each other;
    A step of fixing a reinforcing bar and a form by installing curved steel formwork (U, I) capable of adjusting curvature around the reinforced bar for making the assembled PSC girder;
    Placing and curing the concrete in the curved steel formwork (U, I) capable of adjusting the curvature;
    And a step of disassembling the curved steel formwork (U, I) capable of adjusting the curvature, wherein the curved steel formwork (U, I) is curved.
KR20130051262A 2013-05-07 2013-05-07 PSC girder of adjustable curvature curved using the PSC girder for steel production dies and production method KR101493767B1 (en)

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KR101678949B1 (en) 2016-05-09 2016-11-23 우경기술주식회사 Mold for curved type prestressed concrete structure and manufacturing method of curved type prestressed concrete structure using the same
KR102055537B1 (en) * 2018-07-17 2019-12-12 조한구 Integral type mold with curved packaging

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CN104674670A (en) * 2015-03-03 2015-06-03 北京地圣科创建设工程有限公司 Steel moulding plate with adjustable curvature for manufacturing curvilinear PSC (Pre-Stressed Concrete) beam and manufacturing method of beam
CN106835992B (en) * 2017-03-03 2018-08-24 广州市第二市政工程有限公司 A kind of arcuate structure clear-water concrete construction of cast-in-situ box-beam method
KR102088088B1 (en) * 2017-12-09 2020-03-11 권형규 A Form for Bridge Girder Using wrinkled straight form units, Girder and Bridge construction methods by it
CN109537437A (en) * 2018-11-30 2019-03-29 中铁建南方建设投资有限公司 A kind of prestressed steel reinforced concrete beam device and its implementation
KR102139132B1 (en) * 2019-04-30 2020-07-29 김준영 Steel form structure capable of adjusting the angle of end, and prestressed concrete beam manufactured thereby and construction method of bridge using the same

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KR19990027300U (en) * 1997-12-23 1999-07-15 신현준 Formwork
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
KR101678949B1 (en) 2016-05-09 2016-11-23 우경기술주식회사 Mold for curved type prestressed concrete structure and manufacturing method of curved type prestressed concrete structure using the same
KR102055537B1 (en) * 2018-07-17 2019-12-12 조한구 Integral type mold with curved packaging

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