KR101029993B1 - Method for constructing arch type psc beam - Google Patents

Abstract

The present invention relates to an arcuate PSC beam manufacturing method for constructing an arch formwork for prestressed concrete beams installed in the bridge axial direction.

The present invention in the construction of the formwork support both ends of the horizontal bottom section of both ends of the arch-shaped formwork in direct contact, the central arch bottom section is installed on both sides of the floorboards to increase the height in the longitudinal direction, between the earth and sand between After filling the chopped, and installed a plurality of longitudinal wood and transverse wood on the top surface of the compacted soil, and then arranged the upper steel plate on the horizontal wood top surface, the arch formwork is to be supported on the upper surface of the upper steel sheet. . According to the present invention, the mold making for forming the arch formwork for the formwork is made simply through both sides of the matage fingerboard and after the earth and sand filling, the installation of longitudinal wood and transverse wood, so that the field work process is made simple In addition, construction costs can be minimized by minimizing the occurrence of waste wood such as copper bars.

Arch formwork, arched PSC beam, earth fill, PSC beam production method, formwork support

Description

How to make arched PS beam {METHOD FOR CONSTRUCTING ARCH TYPE PSC BEAM}

The present invention relates to a prestressed concrete beam installed in the axial direction of the bridge, and more specifically in the central arch bottom section of the formwork support to arrange the both sides of the board to increase the height in the longitudinal direction, and then compacted after filling the soil, Longitudinal squares and transverse squares are placed on the upper surface of the soil, or a plurality of lattice-type hollow block bodies pre-fabricated with precast concrete blocks are installed in the factory, and the upper steel plates are placed on the upper side of the upper plate. The present invention relates to a method of manufacturing an arcuate PSC beam, which reduces construction costs and improves construction performance by making a simple mold.

In general, recently constructed concrete bridges are constructed using prestressed concrete beams (hereinafter simply referred to as "PSC beams"). This bridge construction method is to produce the PSC beam on the ground, then transported to the construction site to place both ends of the PSC beam (1) on the alternating or pier (2) as shown in Figure 1a, and then integrated with it The horizontal beam is formed as much as possible, and the slab concrete 3 is poured to construct a bridge.

Conventionally, the conventional ready-made PSC beam 1 required for the above-described method is basically formed in a straight shape of the same shape along the axial direction while maintaining an I-shaped cross section as shown in FIG. Therefore, the bridge constructed by using the conventional ready-made PSC beam as described above is greatly hindered the aesthetics of the city by completing a uniform and rigid straight side surface. Accordingly, the construction of bridges through the above-described construction method has been avoided due to aesthetic defects appearing in the aspect of bridges in areas where city aesthetics are important.

On the other hand, when sequencing the bridge, considering the structural dynamics, it is necessary to increase the cross-sectional height of the portion since the bending moment of the portion increases at the point of the bridge. However, in the structure of the conventional ready-made reinforced concrete PSC beam uniformly as described above, the construction cost is increased by increasing the height of the beam itself as a whole to secure the structural rigidity of both points, and mechanically, it is unreasonable to shift or piers. There was also a problem that the unnecessary load is applied.

Accordingly, in order to improve aesthetics in a bridge using a conventional PSC beam or to efficiently construct a bridge in the form of a continuous bridge, it is urgent to emerge a new conventional PSC beam that can secure structural rigidity while maintaining aesthetic sense.

According to the necessity of the art, after placing reinforcing bars and sheath pipes in a mold having an I-shaped cross-section, placing concrete and curing them, inserting steel wires in the sheath pipes and tensioning to introduce artificial compressive force to the lower flange side. In order to offset the stress caused by the external force to a predetermined limit, a PSC beam 10 having a load capacity is manufactured in the ground, as shown in FIG. 2A, and then the PSC beam 10 is installed at an installation site. As shown in FIG. 2B, as shown in FIG. 2B, both ends are placed on the pier 20a or the alternate 20b, and then the bridge is constructed by forming a cross beam and integrating the slab concrete 30 so as to be integrated therewith. A method has been proposed.

The PSC beam 10 used in the conventional bridge construction method is as shown in Figure 2a, the lower surface 14 of the PSC beam 10 is curved in an arc shape based on the bridge direction of the bridge. The height of the middle portion 12 of the PSC beam 10 is small and the height of the key is increased toward at least one of the branch portions 13 on both sides.

Therefore, the height of the middle portion 12 of the PSC beam 10 is made small by the above method, and the lower surface 14 is smoothly deformed while forming the key height of the both side point portions 13 to form a bridge. It is now possible to build bridges that effectively increase the structural rigidity of the bridge and enhance its aesthetics.

However, this conventional arched PSC beam manufacturing method is expensive to construct the formwork support by using excessive wood in the formwork support for the formwork installed on the floor of the arch formwork, the wood used when dismantling the arch formwork All the clubs had to be discarded, resulting in excessive costs and process improvements.

The present invention is to solve the above conventional problems, the first object of the present invention in the construction of the formwork support is installed on the bottom of the arch formwork for the production of the PSC beam toward both the horizontal bottom to the central arch bottom In order to increase the height, the two sides of the arch support are placed in the central arch bottom section of the form support, the soil is filled and chopped, and then the longitudinal wood and transverse wood are placed on the upper surface of the soil, and the upper steel plate is placed on it to prevent excessive use of wood. It is to provide a method of manufacturing an arched PSC beam that has a structurally solid formwork support while preventing construction costs and improving constructability.

The second object of the present invention is to continuously form a lattice-type hollow block body of precast concrete block body, which is pre-fabricated according to the dimensions in advance in the factory, in the construction of formwork support installed at the bottom of the arch formwork for manufacturing PSC beam. By installing and supporting the arch formwork through the upper steel plate, it prevents the use of excessive timber and constructs the structurally solid formwork support to reduce the construction cost and provide the arched PSC beam manufacturing method which improved the stability of the field construction work. .

In order to achieve the above object, the present invention is configured as follows.

In the method of manufacturing the arcuate PSC beam according to the first embodiment of the present invention, in order to correct the height difference between the horizontal bottom section and the central arch bottom section of the arch formwork, the form support is formed at both ends of the horizontal bottom section of the arch formwork. Directly in contact with each other, arranging both sides in the central arch bottom section so that the height increases from the horizontal bottom to the central arch bottom at both ends, and after filling the earth and sand between the cardboard base plate, it is chopped, the longitudinal corners on the top This is arranged in series, and in parallel to the longitudinal direction by placing a plurality of lateral timber on the upper surface of the longitudinal timber, and arranged the upper steel plate on the upper surface of the transverse timber, so that the arcuate formwork is supported on the upper surface of the upper steel sheet It is. Therefore, the mold making for forming the arch formwork for the formwork is made simply through both sides of the cardboard board, and after filling the earth and sand, the installation of longitudinal wood and transverse wood is simple, so the field work process is made simple, as well as waste wood. Construction costs can be minimized.

In the method of manufacturing the arcuate PSC beam according to the second embodiment of the present invention, in order to correct the height difference between the horizontal bottom section and the central arch bottom section of the arch formwork, the formwork support has a predetermined lateral distance from the horizontal bottom section of the both ends. Arranged in the longitudinal direction so as to extend in the longitudinal direction to the longitudinal direction, and parallel installation in the longitudinal direction by spaced apart a plurality of transverse angular on the upper surface of the longitudinal angular, a plurality of lattice hollow to increase the height in the central arch bottom section The block body is continuously installed, and the upper steel plate is disposed on the upper surface of the grid-shaped hollow block body so that the arcuate formwork is supported on the upper surface of the upper steel plate. This structure minimizes the use of timber and ensures stable construction in the field by constructing a solid formwork zone through the lattice hollow block of precast concrete blocks prefabricated to the dimensions in the factory. Can greatly improve.

According to the arcuate PSC beam manufacturing method according to the first embodiment of the present invention, the two sides of the corrugated board are arranged so that the height increases in the longitudinal direction in the central arch bottom section, and after the soil is filled and chopped, there is a longitudinal box and a transverse beam thereon. A directional square is installed and an upper steel plate is placed on the upper surface so that the arcuate formwork is supported on the upper surface of the upper steel sheet. Therefore, the mold making for forming the arch formwork for the formwork is made concisely, the field work process is made simple, and the effect of minimizing the construction cost by minimizing the occurrence of waste wood such as copper bar is obtained.

According to the method of manufacturing the arcuate PSC beam according to the second embodiment of the present invention, in order to correct the height difference by the horizontal bottom section and the central arch bottom section of the arch formwork, the formwork support has a longitudinal wooden beam on both ends of the horizontal bottom section. The horizontal steel plate is placed, and the upper steel plate is installed in the middle arch bottom section by installing a plurality of lattice-type hollow block bodies prefabricated with precast concrete block bodies at the factory so that the height increases from the horizontal bottom to the central arch bottom at both ends. Support the arch formwork through. Therefore, the present invention, in the construction of the formwork support for supporting the lower part of the arch formwork to prevent the use of excessive timber on the construction site to reduce the construction cost by building the formwork support, a plurality of grids prefabricated in the factory precast concrete block body Since the hollow hollow block is manufactured, it is structurally robust and stable, and the effect of greatly improving the stability of the construction work is obtained.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Accordingly, such improvements and modifications are within the scope of the present invention as long as they are obvious to those skilled in the art.

BRIEF DESCRIPTION OF THE DRAWINGS In order to describe the present invention more clearly and easily, the following describes the best embodiments of the present invention in detail with reference to the accompanying drawings. Is not limited to the embodiments described below.

<First Embodiment>

In the method of manufacturing an arched PSC beam according to the first embodiment of the present invention, as shown in FIG. 3, after the form support 100 is installed on the floor A, the arch formwork 200 for manufacturing the PSC beam is formed on the form support. Install).

Then, after installing the reinforcing bar, the tension material in the arch formwork 200, the concrete is poured and cured, and the arch formwork 200 is dismantled to produce an arcuate PSC beam (C).

Arch arc PSC beam manufacturing method according to a first embodiment of the present invention to correct the height difference (Δh) by the horizontal bottom section (L1) and the center arch bottom section (L2) of both ends of the arch formwork 200 As shown in FIG. 4, the formwork support 100 is in direct contact with both end horizontal bottoms B of the arcuate formwork 200 at the horizontal bottom section L1 at both ends, which is illustrated in FIG. 5A. As described above, the upper steel plate 150 is directly installed on the floor A of the workshop, and horizontal bottoms B of both ends of the arch formwork 200 directly contact each other.

 And in the central arch bottom section (L2) is arranged both sides of the cardboard boards 310 made of wood so that the height increases from the horizontal bottom (B) to both ends of the central arch bottom (Ba), between the cardboard boards 310 After filling the earth and sand (300).

In this way, the central arch bottom section (L2) is formed so that the both sides of the marge fingerboard 310, the horizontal bar 311 and the vertical top plate 314 is formed facing each other to maintain a right angled cross-section, vertical to the horizontal bar 311 The upper plate 314 is reinforced by the inclined material 316, and both sides of the vertical upper plate 314 are anchor bar 318 is fixed to the floor (A) of the production site to support the side and disposed on both sides The earth and sand 300 is filled in the space between the horizontal bar 311 and the vertical top plate 314 to be compacted.

Through such a structure, the earth and sand 300 is filled and compacted so that the height increases from the horizontal bottom portion B to the central arch bottom Ba.

Then, as shown in Figure 5b and 5c, the top surface of the soil to be compacted, as shown in Figure 5b and 5c, so that longitudinal longitudinal 111 is continuously arranged, a plurality of transverse timber 121 on the upper surface of the longitudinal timber 111. Spaced apart in parallel to the longitudinal direction, and the upper steel plate 150 is disposed on the upper surface of the transverse lumber 121, so that the arcuate formwork 200 is supported on the upper surface of the upper steel plate 150.

Such a structure is shown in detail in FIG.

That is, the central arch bottom section (L2) is different from the adjacent horizontal bottom section (L1) opposite the opposite ends of the horizontal bottom (B) is formed in the top surface so that the height increases toward the central arch bottom (Ba), such a Gradient is composed of both sides of the cardboard board 310 made of wood and the soil 300 filled therebetween.

In such a structure, the both sides of the cardboard board 310 is installed side by side on the production floor (A) of the arch formwork 200, each of which is connected to the horizontal bar 311 to form a vertical cross-section vertical top plate 314 The horizontal bar 311 and the vertical top plate 314 are reinforced through the inclined material 316, and at the same time both sides of the vertical top plate 314 anchor bar 318 is the production floor (A) It is fixed on the side to support it.

Therefore, the earth and sand 300 in the space between the horizontal bar 312 and the vertical top plate 314 of the both sides of the cardboard plate 310 is arranged side by side on the production floor (A) of the arch formwork 200 as described above. Filled and compacted, in this case the both sides of the fingerboard 310 acts like a mold to the earth and sand are compacted.

In addition, the soil sand 300 thus compacted is formed in a structure in which the height increases from the horizontal bottom portion B to the central arch bottom Ba.

In addition, the central arch bottom section (L2) is installed on the top surface of the earthed sand (300) in this way longitudinal longitudinal 111 and transverse timber 121 is installed, such longitudinal longitudinal 111 and transverse timber 121 ) Are installed so as to naturally extend from both ends of the horizontal bottom section (L1), by arranging the upper steel plate 150 successively thereon, so that the arcuate formwork 200 is supported on the upper surface of the upper steel plate (150).

Gradient of the upper steel plate 150 constituting the upper surface of the formwork support 100 through this installation structure naturally occurs in the horizontal bottom section (L1) and the central arch bottom section (L2) at both ends of the arch formwork 200. Is formed along the height difference (Δh) to form the lower portion of the arcuate formwork 200.

Figure 7 shows another embodiment of the arcuate PSC beam manufacturing method according to the first embodiment of the present invention.

That is, in the horizontal bottom section (L1) at both ends, a longitudinal timber 110 is disposed so as to extend in a longitudinal direction at a predetermined lateral spacing distance, and a plurality of transverse timbers 120 are spaced apart on the upper surface of the longitudinal timber. Parallel installation in the direction.

As shown in FIG. 8A, the longitudinal beam 110 is disposed in the horizontal bottom section L1 at both ends so as to extend in the longitudinal direction in three rows at a predetermined horizontal separation distance. A plurality of lateral wooden beams 120 on the upper surface are installed in parallel in the longitudinal direction.

And in the central arch bottom section (L2) is arranged both sides of the cardboard boards 310 made of wood so that the height increases from the horizontal bottom (B) to both ends of the central arch bottom (Ba), between the cardboard boards 310 After filling the earth and sand (300).

In such a structure, the two side margin boards 310 have vertical top plates 314 formed at the centers of the horizontal bottom plates 312 and horizontal bottom plates 312, respectively, and the horizontal bottom plates 312 and the vertical top plates 314 are inclined. It is a structure to be reinforced with the ash 316, and the earth and sand 300 is filled in the space between the horizontal bottom plate 312 and the vertical top plate 314 disposed on both sides and is compacted.

Through such a structure, the earth and sand 300 is filled and compacted so that the height increases from the horizontal bottom portion B to the central arch bottom Ba.

And in the central arch bottom section (L2) as shown in Figure 8b and 8c on the top surface of the earthed sand 300 is thus compacted, so that the longitudinal timber 111 is continuously arranged, the top surface of the longitudinal timber 111 Installed in parallel in the longitudinal direction by spaced apart a plurality of transverse timber 121, the upper steel plate 150 is disposed on the upper surface of the transverse timber 121, the arch formwork 200 is the upper surface of the upper steel plate 150 To be supported.

Such a structure is shown in detail in FIG.

That is, the central arch bottom section (L2) is different from the adjacent horizontal bottom section (L1) opposite the opposite ends of the horizontal bottom (B) is formed in the top surface so that the height increases toward the central arch bottom (Ba), such a Gradient is composed of both sides of the cardboard board 310 made of wood and the soil 300 filled therebetween.

In such a structure, the both sides of the fingerboard plate 310 is installed side by side on the floor (A) of the production site of the arcuate formwork 200 at a wide interval larger than the width of the lateral wood box 120 of the horizontal bottom section (L1) at both ends, Each of the horizontal bottom plate 312 and the vertical bottom plate 312 is provided with a vertical top plate 314 installed upright, the horizontal bottom plate 312 and the vertical top plate 314 is one side through the inclined material 316 It is a structure to be reinforced.

Thus, the earth and sand 300 in the space between the horizontal bottom plate 312 and the vertical top plate 314 of the both sides of the margeage support plate 310 arranged side by side on the production floor (A) of the arch formwork 200 in this way Filled and compacted, in this case the both sides of the fingerboard 310 acts like a mold to the earth and sand are compacted.

In addition, the soil sand 300 thus compacted is formed in a structure in which the height increases from the horizontal bottom portion B to the central arch bottom Ba.

In addition, the central arch bottom section (L2) is installed on the top surface of the earthed sand (300) in this way longitudinal longitudinal 111 and transverse timber 121 is installed, such longitudinal longitudinal 111 and transverse timber 121 ) Are installed so as to be naturally connected to the longitudinal wooden box 110 and the transverse wooden box 120 of the horizontal bottom section (L1) at both ends, and the horizontal wooden box 120 and the horizontal end of the horizontal bottom section (L1) at both ends. The upper steel plate 150 is successively arranged on the lateral corners 121 of the central arch bottom section L2 so that the arcuate formwork 200 is supported on the upper surface of the upper steel plate 150.

Gradient of the upper steel plate 150 constituting the upper surface of the formwork support 100 through this installation structure naturally occurs in the horizontal bottom section (L1) and the central arch bottom section (L2) at both ends of the arch formwork 200. Is formed along the height difference (Δh) to form the lower portion of the arcuate formwork 200.

As described above, the arcuate PSC beam fabrication method of the present invention arranges a pair of side-by-side pairboards 310 side by side so as to increase in height while extending in a longitudinal direction with a predetermined lateral separation distance in the central arch bottom section L2. After filling the earth and sand 300 into the internal space is chopped. And there is installed a longitudinal timber 111 and a transverse timber 121 thereon, by placing the upper steel plate 150 on the upper surface so that the arcuate formwork 200 is supported on the upper surface of the upper steel plate 150. . Therefore, the mold making to form the formwork support 100 for the arch formwork 200 is made concisely, the field work process is made simple, and minimizes the occurrence of waste wood that was previously built the formwork support 100 Minimize construction costs.

Second Embodiment

In the arcuate PSC beam manufacturing method according to the second embodiment of the present invention, in order to correct the height difference Δh due to the horizontal bottom section L1 and the central arch bottom section L2 at both ends of the arch formwork 200, As shown in FIG. 10, the formwork support 100 is disposed at the horizontal bottom section L1 at both ends thereof, and a longitudinal wooden block 110 is disposed to extend in a longitudinal direction with a predetermined horizontal distance therebetween. A plurality of transverse lumber 120 is spaced apart on the top of the lumber and installed in parallel in the longitudinal direction.

That is, as shown in Figure 11a, in the horizontal bottom section (L1) at both ends, the longitudinal lumber 110 is arranged so as to extend in the longitudinal direction in three rows with a predetermined lateral separation distance, and the longitudinal lumber 110 of A plurality of lateral wooden beams 120 on the upper surface are installed in parallel in the longitudinal direction.

In addition, as shown in FIGS. 11B and 11C, the central arch bottom section L2 adjacent to the horizontal bottom section L1 at both ends has a plurality of heights so as to increase from the horizontal bottom B at both ends toward the central arch bottom Ba. Two grid-shaped hollow block bodies 800 are continuously installed, and the upper steel plate 150 is disposed on the upper surface of the grid-shaped hollow block body 800, so that the arcuate formwork 200 is formed on the upper part of the upper steel plate 150. It is a structure that is supported on the surface.

In this structure, the lattice-shaped hollow block body 800 is manufactured in accordance with the size of the factory in advance in the factory, simply arranged in order from the horizontal bottom (B) at both ends toward the central arch bottom (Ba) in the field. The height adjustment is done. Therefore, the installation of the formwork support 100 is made very easy in the field and no separate skilled carpentry is required.

The lattice-shaped hollow block body 800 is a precast concrete block body, and an intermediate transverse block 820 formed between the longitudinal block body 810 having a predetermined length and the middle of the longitudinal block body 810. ) Is configured to form a hollow portion 815. Through such a structure, the lattice-type hollow block body 800 can be manufactured at a light weight, and can be easily manufactured at the work site, so that the mold support 100 can be easily manufactured and the arched formwork 200 can be constructed. Will be.

In addition, the arcuate PSC beam manufacturing method according to the second embodiment of the present invention as described above 12a and 12b as shown in Figure 12a and 12b spaced apart a plurality of cross-sections 830 on the upper surface of the hollow block body (800) It is installed in parallel in the longitudinal direction, and the upper steel plate 150 is mounted on the upper surface of the cross-angle wooden box 830 may be made of a structure such that the arcuate formwork 200 is supported on the upper surface.

That is, the horizontal bottom section (L1) at both ends has a longitudinal gap distance therebetween, and arranges a longitudinal timber 110 so as to extend in the longitudinal direction in three rows, and a transverse timber on the upper surface of each longitudinal neck 110. A plurality of 120 spaced apart in parallel to install in the longitudinal direction. Further, in the central arch bottom section L2 adjacent to the horizontal bottom section L1 at both ends, a plurality of lattice-shaped hollow block bodies 800 are continuously formed so as to increase in height from the horizontal bottom B at both ends to the central arch bottom Ba. To install, but a plurality of transverse wood block 830 on the upper surface of the grid-shaped hollow block body 800, the upper steel plate 150 is disposed so that the arcuate formwork 200 is the upper portion of the upper steel plate 150 Support on the face.

In such a structure, it is possible to support the height of the upper surface of the formwork support 100 more precisely due to the plurality of lateral corners 830 installed on the upper surface of the grid-shaped hollow block body 800, accordingly By manufacturing the arched formwork 200 of the standard can be produced an accurate PSC beam.

On the other hand, the grid block 800 is a precast concrete block, unlike the structure shown in Figures 10 and 12, as shown in Figures 13 and 14a, 14b, 14c, a predetermined length The intermediate block body 810 is formed between the longitudinal block body 810 and the middle of the longitudinal block body 810 and protrudes outward to form a hollow portion 815, the length An insertion groove 812 is further formed on the upper surface of the directional block body 810, and thus the insertion groove 812 may be inserted into and installed in the insertion groove 812.

In such a structure, the lattice-shaped block body 800 and the cross-beams 830 are integrally formed, and an insertion groove is formed on the upper surface of the longitudinal block body 810 to fix the cross-beams 830. 812 is formed and the horizontal groove 830 is inserted into the insertion groove 812 to fix it. And the upper steel plate 150 is supported on the upper surface of the lateral wooden box 830, and the arched formwork 200 is supported on the upper surface.

Accordingly, in such a structure, as shown in FIG. 14A, the horizontal bottom section L1 at both ends has a longitudinal cross section 110 arranged to extend in the longitudinal direction in three rows with a predetermined lateral separation distance, and the longitudinal direction. It is a structure installed in parallel in the longitudinal direction by spaced apart a large number of lateral lumber 120 on the upper surface of the lumber 110. However, as shown in FIGS. 14B and 14C, the central arch bottom section L2 includes a plurality of lattice-shaped hollow block bodies 800 to increase in height from the horizontal bottom B at both ends toward the central arch bottom Ba. And install a plurality of transverse wood 830, and arrange the upper steel plate 150 so that the arcuate formwork 200 is supported on the upper surface of the upper steel plate 150.

Even in such a structure, an accurate PSC beam (C) can be manufactured by manufacturing an arch formwork 200 having a precise specification through a plurality of lattice-shaped hollow block bodies 800 and a plurality of transverse corners 830 previously manufactured. have.

In addition, the arc-shaped PSC beam manufacturing method according to the second embodiment of the present invention is the height difference between the horizontal bottom (B) at both ends of the horizontal bottom section (L1) and the grid block body 800 of the central arch bottom section (L2) Both sides may be made of a structure in which the sideboards 310 are additionally arranged to adjust the step by.

In such a structure, as shown in FIG. 15, both sides have a height between the two horizontal bottom sections L1 and the central arch bottom section L2 so as to increase in height from both horizontal bottom B to the central arch bottom Ba. The support plate 310 is additionally disposed, and the earth and sand 300 is filled between the margeji fingerboard 310 so that the step difference due to the height difference between the horizontal bottom portion B and the lattice block body 800 can be adjusted. will be.

In other words, between the horizontal bottom section (L1) and the central arch bottom section (L2) at both ends, the rear end of the longitudinal box 110 and the transverse box (120) of the horizontal bottom section (L1) at both ends as shown in Figure 16a To arrange the both sides of the fingerboard 310 as shown in Figure 16b made of wood gradually increasing in height so as to connect to the lattice-shaped block body 800 of the central arch bottom section (L2), the margin board 310 After filling the earth and sand (300) between the chopped. In addition, a grid-shaped block body 800 as shown in FIG. 16C is installed at the rear end of the marge fingerboard 310 and the earth and sand 300, and both horizontal bottoms B and the central arch at both ends of the horizontal bottom section L1. The leveling board 310 and the earth and sand 300 can adjust the step by the height difference between the lattice block body 800 of the bottom section (L2).

In such a structure, the two side margin boards 310 have vertical top plates 314 formed at the centers of the horizontal bottom plates 312 and horizontal bottom plates 312, respectively, and the horizontal bottom plates 312 and the vertical top plates 314 are inclined. It is a structure to be reinforced with the ash 316, and the earth and sand 300 is filled in the space between the horizontal bottom plate 312 and the vertical top plate 314 disposed on both sides and is compacted. Through this, it is possible to adjust the step by the height difference between the horizontal bottom (B) of the both ends of the horizontal bottom section (L1) and the lattice-shaped block 800, and to form a mold support 100 of more accurate standard PSC beam (C ) Can be produced.

As such, the present invention, in order to correct the height difference △ h by the horizontal bottom section (L1) and the central arch bottom section (L2) of both ends of the arch formwork 200, the formwork support 100 is the horizontal bottom section (both ends) In the factory, the longitudinal beam 110 and the horizontal beam 120 are disposed at L1) and the height is increased from the horizontal bottom B at both ends to the central arch bottom Ba at the central arch bottom section L2. A plurality of lattice-shaped hollow block bodies 800 pre-fabricated with cast concrete block bodies are continuously installed to support the arch formwork 200 through the upper steel plate 150.

Therefore, the present invention in the construction of the formwork support 100 for supporting the lower portion of the arch formwork 200, while building the formwork support 100 while preventing the use of excessive wood in the work site to reduce the construction cost, precast in the factory Since it is manufactured using a plurality of lattice-shaped hollow block body 800 pre-fabricated in a concrete block body, it is also structurally robust and stable to greatly improve the stability of the field construction work.

1A is a side view illustrating a bridge constructed using a conventional PSC beam.

1B is a perspective view illustrating a conventional PSC beam.

2A is a perspective view of a conventional PSC beam having an arcuate bottom surface.

Figure 2b is a side view showing a bridge constructed using a conventional PSC beam having an arcuate bottom surface.

3 is a side view showing an arcuate formwork to which the arcuate PSC beam fabrication method according to the first embodiment of the present invention is applied and an arcuate lower surface fabricated using the arcuate formwork.

Figure 4 is for explaining the arc-shaped PSC beam manufacturing method according to the first embodiment of the present invention, both horizontal bottom section is to be installed directly on the floor of the production site through the upper steel plate, the central arch bottom section is a cardboard plate, earth and sand, A perspective view showing a structure in which formwork supports are constructed by arranging longitudinal and transverse squares.

5 is a partial cross-sectional view of Fig. 4, a is a cross-sectional view A-A, b is a B-B cross-sectional view, c is a C-C cross-sectional view.

FIG. 6 is an exploded perspective view illustrating a structure in which soil is filled between the two side cardboard boards constructed in the central arch bottom section in the structure shown in FIG. 4, and a longitudinal timber and a transverse timber are installed.

Figure 7 is for explaining another embodiment of the arc-shaped PSC beam manufacturing method according to the first embodiment of the present invention, the horizontal bottom section at both ends is provided with a longitudinal wood and transverse wood, the central arch bottom section is a cardboard fingerboard, A perspective view showing a structure in which formwork supports are constructed by arranging soil, longitudinal squares and transverse squares.

FIG. 8 is a partial cross-sectional view of FIG. 7, wherein a is A-A, b is B-B, and c is C-C.

FIG. 9 is an exploded perspective view illustrating a structure in which earth and sand are filled between two sides of the corrugated plate installed in the central arch bottom section, and a longitudinal and transverse timbers are installed.

FIG. 10 is a view illustrating a method of manufacturing an arcuate PSC beam according to a second embodiment of the present invention. The horizontal bottom sections at both ends are provided with a longitudinal box and a transverse box, and the central arch bottom section has a grid-like hollow to increase the height. It is a perspective view which shows the structure which formed the formwork support by arrange | positioning a block body and an upper steel plate.

FIG. 11 is a partial cross-sectional view of FIG. 10, wherein a is A-A, b is B-B, and c is C-C.

12A is a view illustrating a method of fabricating an arcuate PSC beam according to a second embodiment of the present invention. A horizontal hollow corner and a horizontal hollow corner are installed in horizontal bottom sections at both ends, and a hollow grid is formed so that height is increased in a central arch bottom section. It is a perspective view which shows the structure which formed the formwork support by arrange | positioning a block body, a transverse wood block, and an upper steel plate.

FIG. 12B is an exploded perspective view of the lattice-shaped hollow block body, transverse wood blocks, and the upper steel plate illustrated in FIG. 12A.

FIG. 13 is a view illustrating a method of fabricating an arcuate PSC beam according to a second embodiment of the present invention. The horizontal bottom sections at both ends are provided with a longitudinal wooden box and a transverse square box, and the central arch bottom section has a grid shape installed to increase the height. It is a perspective view showing a structure in which a lateral square is inserted into an insertion groove of a hollow block body, and a form support is constructed by arranging an upper steel plate.

FIG. 14 is a partial cross-sectional view of FIG. 13, wherein a is A-A, b is B-B, and c is C-C.

15 is a cross-sectional view of the horizontal bottom and the lattice block of both ends through the two sides of the floor and the ground plate installed so as to increase the height between the horizontal bottom section and the central arch bottom section in the arch PSC beam manufacturing method according to a second embodiment of the present invention It is a perspective view showing the structure of adjusting the step by the height difference.

Fig. 16 is a partial cross-sectional view of Fig. 15, which is a-A cross-sectional view, b-B-B cross-sectional view, and c-C cross-sectional view.

<Description of the symbols for the main parts of the drawings>

1,10 ..... conventional PSC beam 2 ..... piers

3,30 ..... slab concrete 12 ..... middle part of PSC beam

13 .. Both sides 14 ..... Bottom

20a .... piers 20b ... shifts

100 .... die support 110,111 .... longitudinal beam

120,121 ..... Cross section 150 ..... Upper steel plate

200 ..... Arched formwork 300 .... Tosa

310 .... Magazine Fingerboard 311 .... Horizontal Bar

312 .... Horizontal bottom plate 314 .... Vertical top plate

316 .... Slope 318 .... Anchor bar

800 .... Lattice Hollow Block 810 .... Longitudinal Block

812 ... insert groove 815 hollow part

820 .... Intermediate transverse block

840 .... Medium transverse block A ..... floor

B .... Horizontal base at both ends Ba .... Central arch bottom

C .... PSC beam L1 .... Horizontal bottom section at both ends

L2 ..... Central arch bottom section

△ h .... Height difference between horizontal bottom section and central arch bottom section

Claims (7)

After installing the formwork support 100 on the floor (A), install the arch formwork 200 for manufacturing the PSC beam on the formwork support, install the reinforcing bars, tension material inside the arch formwork, and then cast concrete and A method of fabricating an arcuate PSC beam comprising curing and dismantling an arcuate formwork, In order to correct the height difference Δh due to the horizontal bottom section L1 and the central arch bottom section L2 at both ends of the arch formwork 200, the formwork support 100 is Both ends of the horizontal bottom portion (B) of the arcuate formwork 200 is in direct contact with the horizontal bottom section (L1), On both sides of the central arch bottom section (L2) from the horizontal bottom (B) to the central arch bottom (Ba) both sides so as to increase the height of the mating boards 310 are disposed, the earth and sand 300 between the mating boards (310) After filling the chopped, so that the longitudinal wood block 111 is continuously disposed on the top surface of the chopped soil 300, parallel installation in the longitudinal direction by spaced apart a plurality of horizontal bark 121 on the top surface of the longitudinal wood beam 111. And arranging an upper steel plate (150) on the upper surface of the transverse horns (120, 121), such that the arcuate formwork (200) is supported on the upper surface of the upper steel plate (150). According to claim 1, The central arch bottom section (L2) so that both sides of the cardboard plate 310 to maintain the horizontal bar 311 and the vertical top plate 314 in a right angled cross section to face each other, the horizontal bar 311 ) And the vertical top plate 314 is reinforced by the inclined material 316, and both sides of the vertical top plate 314, the anchor bar 318 is fixed to the production floor (A) to support the side of the arch How to make a PSC beam. According to claim 1, wherein the horizontal bottom section (L1) at both ends is arranged in the longitudinal column 110 so as to extend in the longitudinal direction at a predetermined horizontal separation distance in addition to the transverse corner 120 ) To be spaced apart in parallel in the longitudinal direction to connect the longitudinal corner 111 and the transverse corner 121 of the central arch bottom section (L2), the central arch bottom section (L2) is both sides of the fingerboard The vertical bottom plate 314 is formed at the center of the horizontal bottom plate 312 and the horizontal bottom plate 312, and the horizontal bottom plate 312 and the vertical top plate 314 are arched to be reinforced by the inclined material 316. How to make a PSC beam. After installing the formwork support 100 on the floor (A), install the arch formwork 200 for manufacturing the PSC beam on the formwork support, install the reinforcing bars, tension material inside the arch formwork, and then cast concrete and A method of fabricating an arcuate PSC beam comprising curing and dismantling an arcuate formwork, In order to correct the height difference Δh due to the horizontal bottom section L1 and the central arch bottom section L2 at both ends of the arch formwork 200, the formwork support 100 is The longitudinal wooden block 110 is disposed in the horizontal bottom section L1 at both ends to extend in the longitudinal direction with a predetermined horizontal separation distance, and the horizontal wooden block 120 is spaced a plurality of horizontal wooden blocks 120 on the upper surface of the longitudinal wooden block. In parallel to each other, The plurality of lattice hollow block bodies 800 are continuously installed in the central arch bottom section L2 so as to increase the height, and the upper steel plate 150 is disposed on the upper surface of the lattice hollow block bodies 800. Arched formwork PSC beam manufacturing method for the arch formwork 200 is supported on the upper surface of the upper steel plate (150). The method of claim 4, wherein the grid-shaped hollow block body 800 is a precast concrete block body, the intermediate formed between the longitudinal block body 810 having a predetermined length and the middle of the longitudinal block body 810 Consisting of the transverse block 820 to form a hollow portion 815, and the plurality of transverse timber 830 on the upper surface spaced apart and installed in parallel in the longitudinal direction, and the upper surface of the transverse timber 830 Arched PSC beam manufacturing method for the upper steel plate 150 is raised and the arcuate formwork 200 is supported on the upper surface. The block-shaped block body 800 is a precast concrete block body, and protrudes outwardly between the longitudinal block body 810 having a predetermined length and the middle of the longitudinal block body 810. It is composed of a middle transverse block body 840 formed to form a hollow portion 815, the insertion groove 812 is further formed on the upper surface of the longitudinal block body 810, the insertion groove 812 Inserting and installing a transverse angular 830, the upper steel plate 150 is mounted on the upper surface of the lateral angular 830 and an arcuate PSC beam manufacturing method so that the arcuate formwork 200 is supported on the upper surface. According to claim 5 or claim 6, Between both ends of the horizontal bottom section (L1) and the central arch bottom section (L2) both sides so that the height increases toward the central arch bottom (Ba) from both horizontal bottom (B) ( An additional arrangement of the 310 and the arched PSC beam to fill the earth and sand 300 between the cardboard plate 310 to adjust the step by the height difference between the horizontal bottom (B) and the grid-like block 800 at both ends. How to make.

Images