KR101029991B1 - Method for constructing arch type psc beam - Google Patents

Abstract

The present invention relates to a method of manufacturing an arcuate PSC beam for correcting the height difference occurring in the horizontal bottom section and the central arch bottom section of both ends of the arch formwork for building the prestressed concrete beam.

The present invention arranges the longitudinal support so that the formwork support for supporting the arched formwork extends in the longitudinal direction at a predetermined horizontal separation distance in the horizontal bottom section at both ends, and a plurality of the transverse timbers are spaced apart on the upper surface of the longitudinal timber. Parallel to each other in the longitudinal direction, and placed in the center arch bottom section spaced apart from the horizontal bottom at both ends with a large number of guide transverse wood spaced apart with a height difference, and then each guide transverse wood from the horizontal bottom at both ends After the longitudinally placed corners or channel members are spaced apart in the transverse direction between the upper surfaces, the upper steel sheet is disposed on the upper surface of the longitudinal corners or channel members, so that the arcuate formwork is supported on the upper surface of the upper sheet.

Arch formwork, arched PSC beam, bridge, PSC beam manufacturing 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 a bridge. More specifically, the height difference between the horizontal bottom section and the central arch bottom section of both ends of the arch formwork is supported by supporting the lower part of the arch formwork as a plurality of wood and steel materials. The present invention relates to a method of manufacturing an arched PSC beam, which can be easily calibrated, reduces construction costs, and improves constructability.

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 Forming a cross beam as possible, and is a method of constructing a bridge by pouring the slab concrete (3).

Conventionally, the conventional ready-made PSC beam 1 required for the above-described method is basically formed in the same straight line 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 on the site. As shown in FIG. 2B, the bridges are constructed by placing both ends on the pier 20a or the alternate 20b, and then forming cross beams 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 not effective in the construction of the formwork support to be installed on the bottom of the arched formwork, and the cost is excessive, it was necessary to improve the process.

The present invention is to solve the conventional problems as described above, the first object of the present invention in the formwork support to be installed on the bottom of the arch formwork for the production of PSC beam formwork support using wood and steel By manufacturing and supporting the lower part of the arch formwork, it is possible to reduce the construction cost and to provide an arched PSC beam manufacturing method that is easy to construct.

The second object of the present invention is to form a formwork support using wood in the formwork support to be installed on the bottom of the arch formwork for the production of the PSC beam, and to form a steel on the curve to form a lower portion of the arch formwork It is possible to easily maintain the lower surface of the PSC beam by supporting it, thereby providing an arcuate PSC beam manufacturing method which greatly improves workability.

In addition, the third object of the present invention is to provide a precise structure in the factory in the process of building the formwork to be installed on the bottom of the arch formwork can be precisely manufactured in the factory to improve the workability, and to manufacture the formwork support of precise specifications The present invention provides an arcuate PSC beam manufacturing method capable of producing a greatly improved PSC beam.

And the fourth object of the present invention is to build a formwork support that is installed on the bottom of the arch formwork for the production of PSC beam, quickly build the lower part of the arch formwork by using steel without the skilled woodworking in the field When the formwork is dismantled, it is possible to recycle the used materials without disposing of them, thereby reducing the construction cost related to the production of the arched formwork and making the construction easier in the field. In providing.

In addition, the fifth object of the present invention is to construct a formwork support that is installed on the bottom of the arch formwork for the production of the PSC beam, the longitudinal spacers produced in the factory in a horizontal direction in a continuous installation in parallel, the longitudinal gap By installing the fall prevention material between them so that the ash does not fall, the formwork support that is installed on the floor of the arch formwork can be easily assembled and constructed on the site, which improves productivity and reduces the cost of construction. In providing a method.

And the sixth object of the present invention is to arrange the longitudinal longitudinal and transverse squares in the longitudinal direction with the height difference in the construction of the formwork support to be installed on the bottom of the arch formwork for the production of PSC beam, the upper part thereon By arranging the steel plate to support the lower part of the arch formwork, it is possible to easily correct the height difference occurring at the horizontal bottom section and the central arch bottom section of both ends of the arch formwork. The present invention provides an arcuate PSC beam manufacturing method.

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

In the arcuate PSC beam manufacturing method according to the first embodiment of the present invention, the formwork support for supporting the arcuate formwork is arranged with a longitudinal beam so that the horizontal bottom section extends in a longitudinal direction with a predetermined lateral separation distance at both ends. After installing a plurality of lateral timbers in parallel in the longitudinal direction on the top surface of the longitudinal timber, and arranging a plurality of guide lateral timbers on the bottom of the central arch bottom section spaced apart from the horizontal bottom at both ends with a height difference. And horizontally spaced longitudinal lumber or channel members between the guide transverse lumber top surfaces of the both ends from the horizontal bottom, and then placing an upper steel plate on the longitudinal lumber or channel member upper surface to form the arcuate formwork. It is to be supported on the upper surface of the upper steel sheet. Therefore, the first embodiment of the present invention can easily correct the height difference due to the horizontal bottom section and the central arch bottom section of both ends of the arch formwork, can firmly support the lower portion of the arch formwork through the top plate, mostly wood and steel By using the formwork to build the formwork support to reduce the construction cost and ease of construction.

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 transverse direction to the horizontal bottom section of the both ends. Longitudinal squares are arranged so as to extend in the longitudinal direction with a separation distance, and a plurality of transverse squares are installed in parallel in the longitudinal direction by separating a plurality of horizontal squares on the upper surface of the longitudinal squares, and between the longitudinal squares in the central arch bottom section. After installing the longitudinal beams to extend further, and arrange the transverse beams in the longitudinal direction with a height difference on the upper surface of the additional longitudinal beams, and then transverse longitudinal beams or channel members on the upper surface of each of the horizontal beams Spaced apart in the direction, and the upper steel plate on the longitudinal wooden or channel member upper surface, The arcuate formwork is to be supported on the upper surface of the upper steel sheet. Therefore, the second embodiment of the present invention can easily maintain the lower surface of the PSC beam in the arch formwork, the construction of the arch formwork is very easy, greatly improving the work productivity required for the production of the arch formwork and construction according to the air shortening Cost savings can be achieved.

In the method of manufacturing the arcuate PSC beam according to the third 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 the horizontal bottom section and the central arch bottom section of the both ends. A longitudinal U-shaped channel is installed at the bottom to extend in the longitudinal direction with a predetermined lateral spacing over the longitudinal U-shaped channel, and the longitudinal U-shaped channels are fastened to both sides in a state where the longitudinal lengths are in contact with each other in the longitudinal direction. The plate is connected to each other integrally by using a fastener including a bolt and a nut, the H-shaped or I-shaped steel in the longitudinal direction is spaced apart from each other while having a height difference in each of the U-shaped channel, and installed in the H After installing the lateral C-shaped channel on the upper surface of the steel or I-beam, the upper steel plate is placed on the upper surface of the lateral C-shaped channel. And, wherein the die is an arcuate structure to bear against the upper plate upper surface. Therefore, the third embodiment of the present invention is a steel structure in the process of building the formwork to be installed on the bottom of the arch formwork can be precisely manufactured in a solid structure in the factory can be standardized formwork support to improve the workability of the field assembly work Therefore, it is possible to manufacture PSC beams with precise specifications.

In the method of manufacturing the arcuate PSC beam according to the fourth 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 spaced a predetermined transverse distance from the horizontal bottom section at both ends. Longitudinal squares are arranged so as to extend in the longitudinal direction at a distance, and a plurality of horizontal squares are spaced apart in parallel to the longitudinal cross section on the upper surface of the longitudinal squares, and the central arch bottom section is connected to the longitudinal squares in height Longitudinal block bodies stacked in the form of stacked rectangular plates are disposed in succession, and an upper steel plate is disposed on an upper surface of the longitudinal block bodies in the form of continuous rectangular plate members so that the arcuate formwork is supported on the upper surface of the upper steel sheet. It is. Therefore, the fourth embodiment of the present invention can quickly build a lower portion of the arch formwork in a laminated manner using longitudinal block bodies made of steel without skilled woodworking in the field, the material utilized when dismantling the formwork support It can be recycled without disposing of it, which can reduce the construction cost related to the arch formwork and facilitate the construction in the field, thereby greatly improving the work productivity.

In the method of manufacturing the arcuate PSC beam according to the fifth 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 provided over the horizontal bottom section and the central arch bottom section at both ends. A bottom plate having a constant height is installed continuously on the bottom in a longitudinal direction, and longitudinal spacers whose height increases from the horizontal bottom of both ends to the central arch bottom are continuously installed in parallel in the transverse direction on the bottom plate. A longitudinal spaced apart barrier is installed between the longitudinal spacers so that the longitudinal spacers are not inverted, and the longitudinal spacers are connected to each other in a state in which the predetermined lengths of wood contact each other in the longitudinal direction on the upper surface of the bottom plate. While fixing so as to, the upper steel plate on the upper surface of the longitudinal spacer and fall prevention material The value, which is such that the arched formwork supported by the upper plate upper surface. Therefore, the longitudinal spacers and fall prevention materials manufactured in the factory can be easily assembled and built on the floorboard in the field, thereby improving work productivity and reducing construction costs.

According to the sixth embodiment of the present invention, a method of manufacturing an arcuate PSC beam is provided in order to correct height differences due to horizontal bottom sections and central arch bottom sections of an arch formwork. After arranging longitudinal beams to extend in the longitudinal direction with a predetermined lateral separation distance therebetween, and arranging a plurality of horizontal beams in the longitudinal direction with a height difference on the upper surface of the longitudinal beams, The upper steel plate is disposed on the upper portion so that the arcuate formwork is supported on the upper surface of the upper steel sheet. Through this structure, it is laminated in the longitudinal direction using the standardized longitudinal and transverse squares with the height difference, and the upper steel plate is disposed thereon to form an arch formwork, thereby forming horizontal arch sections at both ends of the arch formwork and the central arch. The height difference occurring in the bottom section can be easily corrected, and as a result, a separate skilled worker is unnecessary at the work site, thereby reducing the construction cost and greatly improving the workability.

According to the first embodiment of the present invention, in constructing the formwork zone to be installed on the bottom of the arcuate formwork in the horizontal bottom section of the both ends of the formwork to extend in the longitudinal direction with a predetermined lateral separation distance in the longitudinal direction and the transverse direction In addition to arranging the wood beam, in the central arch bottom section, the longitudinal wood or channel member is horizontally spaced apart between the guide transverse wood top surfaces, and then the upper steel plate is disposed on the longitudinal wood or channel member upper surface. By adopting a simple structure in which the arcuate formwork supports the lower part of the arcuate formwork, an effect of reducing construction cost and easy construction is obtained.

According to the method of manufacturing the arched PSC beam according to the second embodiment of the present invention, in the construction of the formwork support installed on the bottom of the arch formwork for manufacturing the PSC beam, formwork support is constructed by using wood stacked in multiple stages on the floor. The upper surface of the PSC beam can be easily curved by supporting the lower part of the arcuate formwork by making the steel and the upper plate formed of the channel member on the curvature so that the construction of the arcuate formwork is very easy. Therefore, the work productivity required for the production of the arch formwork can be greatly improved, and the construction cost can be reduced due to the shortening of air.

According to the arcuate PSC beam manufacturing method according to the third embodiment of the present invention, standardization is possible by assembling and installing the formwork support in the field after manufacturing the formwork support by supporting the lower part of the arch formwork using a plurality of H-beams and 형 -beams. It is possible and precise production is possible. Therefore, according to the present invention, it is possible to improve the field installation work efficiency of the formwork support installed in the lower part of the arch formwork, and to manufacture the formwork support of precise specification, thereby obtaining the excellent effect of manufacturing the PSC beam of the precise specification. Lose.

According to the method of manufacturing the arched PSC beam according to the fourth embodiment of the present invention, when constructing the formwork support installed on the bottom of the arch formwork for the production of the PSC beam, in the central arch bottom section, the height difference is successively connected to the longitudinal box. Longitudinal block bodies in the form of rectangular plates having a perforated plate are continuously installed, and an upper steel plate is disposed thereon so that the arcuate formwork is supported on the upper surface of the upper steel plate. Therefore, when the formwork support is constructed by using the longitudinal block bodies in the form of rectangular plates, the longitudinal block bodies in the form of perforated plates consisting of perforated plates are simply laminated to the calculated height and the upper steel plates are supported thereon. No need for skilled woodworking, easy installation of formwork supports on site, greatly improving work productivity, and significant reduction of construction costs related to arched formwork by reusing recycled materials without dismantling arched formwork. You can get the effect.

According to the method of manufacturing the arcuate PSC beam according to the fifth embodiment of the present invention, the longitudinal spacer having a height increasing from the horizontal bottom to the central arch bottom is manufactured at the factory and brought into the field, and then continues in parallel in the horizontal direction. It is installed, there is provided a fall prevention material spaced in the longitudinal direction therebetween, the upper steel plate is disposed on the upper surface of the longitudinal spacer and the fall prevention material, so that the arcuate formwork is supported on the upper surface of the upper steel plate. Therefore, the formwork to be installed on the floor of the arch formwork can be easily assembled and built in the field, the productivity of work is improved, and the construction cost can be reduced.

According to the method of manufacturing the arcuate PSC beam according to the sixth embodiment of the present invention, the longitudinal beams are disposed so as to extend in the longitudinal direction over a horizontal bottom section and a central arch bottom section at both ends in a longitudinal direction. After arranging a plurality of transverse lumbers and height adjusting lumbers in the longitudinal direction on the upper surface of directional lumbers with a height difference, an upper steel plate is disposed on the lateral lumbers and a height adjusting lumber on the upper surface of the upper steel sheet. To be supported by Therefore, in the construction of the arch formwork for the formwork support, there is no need for a separate skilled worker at the work site, thereby reducing the construction cost, and the effect of greatly improving the construction efficiency of the field 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>

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

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).

In the arcuate PSC beam manufacturing method according to the first 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. 4, the formwork support 100 has a longitudinal wooden block 110 arranged in the horizontal bottom section L1 at both ends to extend in a longitudinal direction with a predetermined horizontal distance therebetween, and the longitudinal direction is provided. 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 5a), in the horizontal bottom section (L1) at both ends, the longitudinal timber 110 is disposed so as to extend in the longitudinal direction at a predetermined lateral spacing distance, and the transverse timber on the upper surface of the longitudinal timber A plurality of 120 spaced apart in parallel to install in the longitudinal direction.

The central arch bottom section L2 is spaced apart from the horizontal bottom B at both ends by placing a plurality of guide transverse corners 130 with a height difference therebetween, respectively from the horizontal bottom B at both ends. Longitudinal direction horns 142 or the channel member 140 is spaced apart in the lateral direction between the guide lateral direction of the angles 130.

That is, as shown in Figure 4, the channel member 140 can be spaced apart in the transverse direction between the top surface of each guide transverse wood 130 from both horizontal bottom (B), in this case the channel The member 140 is made of steel having a "∪" -shaped cross section.

 In addition, the upper steel plate 150 is disposed on the upper surface of the channel member 140, so that the arcuate formwork 200 is supported on the upper surface of the upper steel plate 150.

Such a structure is arranged in the horizontal direction spaced apart the channel member 140 between the upper surface of the guide transverse wood 130 as shown in Figure 5c, the upper steel plate 150 on the upper surface of the channel member 140 After the arrangement, the arch formwork 200 is a structure to be supported on the upper surface of the upper steel plate 150.

And between the horizontal bottom section (L1) and the central arch bottom section (L2) at both ends, as shown in Figure 5b, the earth (112) is laid on the floor (A), the thick longitudinal wood ( 110 is disposed, it may be made of a structure installed in parallel in the longitudinal direction by spaced apart a plurality of transverse timber 120 on the upper surface of the longitudinal timber.

Meanwhile, as shown in FIG. 6, the central arch bottom section L2 is spaced apart from each other by placing a plurality of guide transverse corners 130 at a height spaced apart from the horizontal bottom B at both ends with a height difference therebetween. The longitudinal timber 142 is laterally spaced apart from the upper end surfaces of each guide transverse timber 130 from both horizontal bottoms B. FIG.

In this case, the longitudinal beam 142 replaces the channel member 140, and as shown in FIG. 7C, the longitudinal beam 142 is transversely disposed between the top surfaces of the guide horizontal beam 130. Spaced apart in the direction, and installed in parallel in the longitudinal direction by spaced apart a plurality of transverse timber 120 again on the upper surface of the longitudinal timber 142, arranging the upper steel plate 150 thereon, the arch formwork 200 ) Is a structure that is supported on the upper surface of the upper steel plate (150).

And even in such a structure, as shown in Figure 7b between the horizontal bottom section (L1) and the central arch bottom section (L2) at both ends, the earth (112) is laid on the floor (A), the thickness is thick thereon Arranged in the longitudinal wooden box 110, it may be made of a structure in which a plurality of the horizontal wooden box 120 on the longitudinal wooden top surface spaced apart from each other in parallel in the longitudinal direction.

Meanwhile, as illustrated in FIG. 8, the arc-shaped PSC beam manufacturing method according to the first embodiment of the present invention includes the bottom of the central arch bottom section L2 and the guide transverse beam 130 and the longitudinal beam 142 or In the lower space by the channel member 140, the earth and sand 300 is chopped between the guide transversely placed wood 130, the longitudinally placed wood 142 or the channel member on the chopped soil 300 140 may be configured to be arranged. And the upper steel plate 150 is a structure to be disposed on the upper surface of the longitudinal wooden 142 or the channel member 140. Through such a structure, the grounded soil 300 may be more firmly supported by the arch formwork 200.

And the arched PSC beam manufacturing method according to the first embodiment of the present invention, as shown in Figure 9, the bottom of the central arch bottom section (L2) and the guide transverse beam 130 and longitudinal beam 142 or In the lower space formed by the channel member 140, the intermediate guide transverse corners 160 may be further installed between the guide transverse corners 130 arranged above. In addition, the longitudinal beam 142 or the channel member 140 is disposed on the guide transverse timber 130 and the intermediate guide transverse timber 160 disposed in this manner, and the upper steel plate 150 is the longitudinal beam. 142 or the channel member 140 to be disposed on the upper surface. Therefore, it is possible to more firmly support the arcuate formwork 200 through the intermediate guide cross-beams 160 disposed between the guide cross-beams 130.

In addition, the arcuate PSC beam manufacturing method according to the first embodiment of the present invention, as shown in Figure 10, the earth and sand 300, both sides of the bridging plate (side) between the side of the guide transverse wood 130 placed first ( 310 may be disposed, and the earth and sand 300 may be filled between the bridging plates 310 to be compacted.

Through such a structure, the earth and sand 300, which is compacted between the bridging plates 310, can support the arch formwork 200 more firmly.

As described above, the present invention builds the formwork support 100 installed on the bottom of the arcuate formwork 200 in the longitudinal direction with a predetermined lateral separation distance at both ends of the horizontal bottom section (L1). In addition to arranging the longitudinal bark 110 so as to extend in parallel to the longitudinal direction by separating a plurality of horizontal bark 120 on the upper surface of the longitudinal bark. And after arranging a plurality of guide transverse wood 130 on the bottom of the position spaced apart from the horizontal bottom (B) at both ends in the central arch bottom section (L2) with a height difference, respectively from the horizontal bottom (B) at both ends After lateral spacing of the longitudinal lumber 142 or the channel member 140 between the upper surface of the guide transverse wood 130 of the lateral direction, the upper steel plate 150 on the longitudinal wooden or channel member upper surface 140 ) So that the arcuate formwork 200 is supported on the upper surface of the upper steel plate 150.

And install the arch formwork 200 for manufacturing the PSC beam (C) on the formwork support 100, install the reinforcement, the tension material inside the arch formwork 200, and then pour and cure concrete. And by dismantling the arcuate formwork 200, it is possible to easily correct the height difference by the horizontal bottom section (L1) and the center arch bottom section (L2) at both ends of the arcuate formwork (200).

In addition, by filling the earth and sand 300 between the transverse wood 130 130 and supporting the lower portion of the arch formwork 200 through the top plate 150, it is possible to more firmly support the arch formwork 200, accordingly construction cost To reduce the cost and ease of construction.

As described above, in the present invention, when constructing the formwork support 100 installed on the bottom (A) of the arch formwork 200, the length is provided with a predetermined lateral separation distance at the horizontal bottom section L1 at both ends of the formwork support 100. In addition, the longitudinal leg 110 and the transverse leg 120 are disposed so as to extend in the direction, and the central arch bottom section L2 has a longitudinal leg 142 between the upper edges of the guide transverse leg 130. After the channel member 140 is spaced apart in the lateral direction, the upper steel plate 150 is disposed on the longitudinal wooden or channel member upper surface 140, so that the arcuate formwork 100 is arranged in the lower portion of the arcuate formwork 200. By adopting a simple supporting structure, the construction cost can be reduced and construction is easy.

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. 11, the form support 1100 has an upper surface that forms a curved surface, and the upper plate supports the arch formwork 1200 thereon.

The formwork support 1100 provided in the arc-shaped PSC beam manufacturing method according to the second embodiment of the present invention has a longitudinal corner 1110 so as to extend in the longitudinal direction at a predetermined horizontal distance in the horizontal bottom section (L1) at both ends. ) And a plurality of transverse timber 1120 spaced apart on the upper surface of the longitudinal timber in parallel to the longitudinal direction.

In addition, the central arch bottom section (L2) is installed so that the additional longitudinal box 1111 is further extended between the longitudinal box 1110. That is, the longitudinal beams 1110 and the longitudinal beams 1111 are formed coaxially with each other to be easily installed on the floor.

In addition, the central arch bottom section (L2) is placed on the upper surface of the additional longitudinal beams (1111) with the horizontal gap 1120 spaced apart in the longitudinal direction, and then on the upper surface of each of the horizontal beams (1120) Longitudinal squares or channel members 1140 are spaced apart in the transverse direction. In such a structure, a plurality of transverse lumbers 1120 installed on the upper surfaces of the additional longitudinal lumbers 1111 are installed by stacking a plurality of layers so as to have a height difference, or by installing transverse lumbers 1120 having different heights. It can cause a difference.

The longitudinal beam or channel member 1140 is spaced apart in the lateral direction on the upper side of the transverse beam 1120, such longitudinal beam or channel member 1140, for example, three of the central arch bottom side by side It is arrange | positioned over the full length of the section L2.

In addition, an upper steel plate 1150 is disposed on the longitudinal wooden or channel member upper surface 1140 such that the arcuate formwork 1200 is supported on the upper surface of the upper steel plate 1150.

Thus, as shown in Figure 12a, the formwork support 1100 of the present invention, the horizontal bottom section (L1) at both ends is arranged longitudinal longitudinal 1110 so as to extend in the longitudinal direction with a predetermined horizontal separation distance and In addition, there are a plurality of horizontal cross-sections 1120 are installed in parallel in the longitudinal direction spaced apart, the central arch bottom section (L2), as shown in Figure 12b and 12c, on the upper surface of the additional longitudinal box 1111 After arranging the transverse lumber 1120 in the longitudinal direction with a height difference, the longitudinal lumber or channel member 1140 is laminated on the upper surface of each transverse lumber 1120 and disposed over the entire length.

And the upper plate 1150 is provided so as to span both ends of the horizontal bottom section (L1) and the central arch bottom section (L2).

In the construction of the formwork support 1100 installed on the bottom (A) of the arch formwork 1200 for the production of the PSC beam (C) through such a structure to form the formwork support 1100 using wood, Steel, that is, the channel member 1140 is formed in a curved shape, and the upper plate 1150 is raised to support the lower portion of the arcuate formwork 1200 so that the lower surface of the PSC beam C can be easily maintained in a curved shape, thereby greatly improving workability. Can be improved.

In addition, as shown in FIG. 13, the formwork support 1100 according to the present invention does not have a large height difference between the transverse wood 1120 and the longitudinal wood or the channel member 1140 of the central arch bottom section L2. A longitudinal spacer 1170 or a transverse spacer 1180 is further installed on the upper surface of the transverse timber 1120, and the longitudinal spacer on the upper surface of the longitudinal spacer 1170 or the transverse spacer 1180. Alternatively, the channel member 1140 may be installed.

That is, in the horizontal bottom section L1 at both ends, a longitudinal wooden beam 1110 is disposed to extend in the longitudinal direction at a predetermined horizontal separation distance, and a plurality of horizontal wooden beams 1120 are disposed on the upper surface of the longitudinal wooden beam 1110. It is spaced apart and installed in parallel in the longitudinal direction.

Further, the central arch bottom section L2 is installed to further extend the longitudinal longitudinal stems 1111 between the longitudinal squares 1110 and the transverse direction with a height difference on the upper surfaces of the additional longitudinal squares 1111. After arranging the beams 1120 in the longitudinal direction, a longitudinal spacer 1170 or a transverse spacer 1180 is further installed on the upper surface of each of the transverse beams 1120 and the longitudinal beams or channels thereon. The members 1140 are spaced apart in the lateral direction.

In such a structure, a plurality of longitudinal spacers 1170 or transverse spacers 1180 installed on the upper surfaces of the additional longitudinal beams 1111 may be stacked in a plurality so as to have a height difference, thereby generating a height difference. .

In addition, the longitudinal spacers 1170 or the horizontal spacers 1180 on the upper portion of the longitudinal bark or channel member 1140 disposed laterally spaced, such a longitudinal box or channel member 1140 is For example, three are arranged side by side over the entire length of the center arch bottom section L2.

Accordingly, in such a structure, as shown in FIG. 14A, the form support 1100 of the second embodiment of the present invention has a longitudinal corner (eg, a horizontal bottom section L1 extending in a longitudinal direction with a predetermined horizontal distance). 1110 is disposed, and a plurality of transverse beams 1120 are spaced apart and installed in parallel in the longitudinal direction, and the central arch bottom section L2 is formed of additional longitudinal beams 1111 as shown in FIG. 14B. In the case where the lateral corners 1120 are spaced apart in the longitudinal direction with a height difference on the upper surface, and a larger height difference is to be provided, as shown in FIG. 14C, the upper surfaces of the respective lateral corners 1120 are disposed. The longitudinal spacer 1170 or the transverse spacer 1180 is further disposed, and the longitudinal lumber or channel member 1140 is stacked thereon to be disposed over the entire length.

Therefore, in such a structure, in the construction of the formwork support 1100 installed on the bottom A of the arch formwork 1200 for manufacturing the PSC beam C, the formwork support 1100 is formed using a plurality of laminated wood. It is possible to easily maintain the lower surface of the PSC beam (C) by making the steel, that is, the channel member 1140 is curved on it, and supporting the lower portion of the arch formwork 1200 by raising the upper plate 1150, The workability can be greatly improved.

Thus, the second embodiment of the present invention is stacked in multiple stages on the floor (A) in the construction of the formwork support (1100) installed on the floor (A) of the arcuate formwork 1200 for the production of the PSC beam (C) Forming the formwork support 1100 by using wood, and by forming a steel plate and the upper plate consisting of the channel member 1140 thereon curved to support the lower portion of the arch formwork 1200 easily curved the lower surface of the PSC beam (C) The construction of the arch formwork 1200 is very easy. Therefore, the work productivity required for the production of the arch formwork 1200 is greatly improved, and the effect of reducing the construction cost due to the shortening of air is obtained.

Third Embodiment

In the arcuate PSC beam manufacturing method according to the third 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 2200, As shown in FIG. 15, the formwork support 2100 extends in the longitudinal direction with a predetermined lateral separation distance between the horizontal bottom section L1 and the central arch bottom section L2 at both ends. A longitudinal U-shaped channel 2310 is installed in the tube.

The longitudinal U-shaped channel 2310 is installed in three rows each across the horizontal bottom section L1 and the central arch bottom section L2, and the horizontal bottom section L1 at both ends is shown in cross section in FIG. 16A. As described above, after the horizontal U-shaped channel 2330 is installed in the longitudinal U-shaped channel 2310, the upper steel plate 2150 is disposed on the upper surface of the horizontal U-shaped channel 2330, thereby forming the arcuate formwork ( 2200 is supported by the upper surface of the upper steel plate (2150).

In the central arch bottom section L2, as shown in cross-section in FIGS. 16B and 16C, the H-shaped or I-shaped steel 2320 in the longitudinal direction is provided with a height difference in the respective longitudinal U-shaped channels 2310. After inserting the lower portion of the spaced apart, and installed the transverse c-shaped channel (2330) on the upper surface of the H-shaped or I-shaped steel (2320), the upper steel plate (2150) on the upper surface of the horizontal c-shaped channel (2330) By arranging, the arcuate formwork 2200 is supported on the upper surface of the upper steel plate 2150.

Therefore, in this way, the H-shaped or I-shaped steel 2320 is fixed in the longitudinal direction with a height difference in the longitudinal U-shaped channel 2310 in the central arch bottom section L2, and the horizontal U-shaped channel 2330 is disposed thereon. After the installation, when the upper steel plate 2150 is disposed on the upper surface of the lateral U-shaped channel 2330, the steel block 2350 as shown in FIGS. 17A and 17B is manufactured.

The steel block 2350 has a curvature corresponding to the lower surface of the PSC beam C of the upper steel plate 2150 located on the upper surface thereof, and the horizontal U-shaped channel (below the upper steel plate 2150) ( 2330 and the H-shaped or I-shaped steel 2320 and the U-shaped channel 2310 firmly support the upper steel plate 2150.

On the other hand, the longitudinal U-shaped channels 2310 installed in three rows each across the horizontal bottom section L1 and the central arch bottom section L2 are respectively provided with C-shaped channels 2310 having a constant length. Are integrally connected to each other using fasteners 2315 including bolts 2316a and nuts 2316b with fastening plates 2312 with each other in a state of being in contact with each other in the longitudinal direction.

The arcuate PSC beam manufacturing method according to the third embodiment of the present invention configured as described above manufactures steel blocks 2350 as shown in FIGS. 17A and 17B at a factory, and moves them to a formwork site to form an arcuate formwork ( Assemble the formwork support 2100 forming the lower portion of the 2200.

In this case, in the field, the longitudinal U-shaped channels 2310 are installed in three rows each over the horizontal bottom section L1 and the central arch bottom section L2 at both ends, and the horizontal bottom section L1 at both ends is shown in FIG. 16A. As shown in the cross section, after installing the horizontal U-shaped channel 2330 in the longitudinal U-shaped channel 2310, the upper steel plate 2150 is disposed on the upper surface of the horizontal U-shaped channel 2330.

In the central arch bottom section L2, steel blocks 2350, as shown in FIGS. 17A and 17B, which are prefabricated in the factory, are disposed, and longitudinal U-shaped channels 2310 installed in three rows are illustrated in FIG. 18. As shown in FIG. 1, fastenings including bolts 2316a and nuts 2316b are formed by abutting both sides with fastening plates 2312 in a state in which the U-shaped channels 2310 of constant length are in contact with each other in the longitudinal direction. It is to connect to each other integrally using the sphere 2315.

Accordingly, when the longitudinal U-shaped channels 2310 are connected to each other, as shown in FIG. 15, the formwork support 2100 of precision specifications made of steel is constructed.

As described above, the third embodiment of the present invention constructs the formwork support 2100 supporting the lower portion of the arch formwork 2200 by using a plurality of H-beams and ⊂-beams, and the formwork supports 2100 are all formed. Since the steel blocks 2350 can be standardized and precisely manufactured after being precisely manufactured in the factory with steel materials, they can be assembled and installed in the field. Therefore, the present invention can improve the site installation work efficiency of the formwork support 2100 installed in the lower portion of the arch formwork 2200 through the field assembly work as described above, as well as to produce the formwork support 2100 of precise specifications. Therefore, when manufacturing a PSC beam through this, it is possible to obtain a PSC beam (C) of a precise standard.

<Fourth Embodiment>

In the arcuate PSC beam manufacturing method according to the fourth 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 3200, As shown in FIG. 19, the formwork support 3100 has a longitudinal wooden beam 3110 disposed in the horizontal bottom section L1 at both ends so as to extend in a longitudinal direction with a predetermined horizontal distance therebetween, and in the longitudinal direction. A plurality of lateral wooden beams (3120) are spaced apart on the upper surface of the wooden blocks and installed in parallel in the longitudinal direction.

That is, as shown in Figure 20a, the longitudinal timber 3110 is disposed in the horizontal bottom section (L1) at both ends to extend in the longitudinal direction at a predetermined horizontal separation distance, and the transverse timber ( 3120 are spaced apart in parallel to install in the longitudinal direction.

20B and 20C, longitudinal block bodies 3170 in the form of rectangular plates stacked successively on the longitudinal wood blocks 3110 and stacked at a height difference are continuous in the central arch bottom section L2. To be installed. In such a structure, the longitudinal block bodies 3170 in the form of rectangular plates are made of a porous plate made of steel. Such a perforated plate may be made of a rectangular plate structure made of a conventional steel used for laying the upper road in the case of digging for subway construction.

Accordingly, the longitudinal block bodies 3170 having a rectangular plate shape made of such a perforated plate are sequentially stacked to form a stage, as shown in FIGS. 20B and 20C, and the longitudinal direction of the continuous rectangular plate shape is provided. An upper steel plate 3150 is disposed on an upper surface of the block 3170 so that the arcuate formwork 3200 is supported on the upper surface of the upper steel plate 3150.

When the formwork support 3100 is constructed using the longitudinal block bodies 3170 in the form of a rectangular plate as described above, the longitudinal block bodies 3170 in the form of a perforated plate are simply stacked on the calculated height and stacked thereon. Since the upper steel plate 3150 is supported, the construction work of the formwork support 3100 is made very easy, and the formwork support 3100 of the site is easily installed, thereby greatly improving the work productivity.

And the arcuate PSC beam manufacturing method according to the fourth embodiment of the present invention, as shown in Figure 21, the step portion in the longitudinal block body 3170 of the rectangular plate shape stacked in the central arch bottom section (L2) The wedge plate member 3180 may be further installed to prevent the upper steel plate 3150 from sagging due to the step difference.

This is because when the step portion is largely generated in the longitudinal block body 3170 of the rectangular plate shape stacked in the center arch bottom section (L2) as described above, the upper steel plate 3150 is installed on the arch formwork 3200 Due to loads of reinforcing bars, sheath pipes and concrete contained therein, the structural support of the form support 3100 may be vulnerable due to sagging down from the corresponding stepped portion.

In contrast, the stepped portions of the longitudinal block bodies 3170 of the rectangular plate shape stacked in the central arch bottom section L2 as described above are gradually installed by further installing a wedge-shaped plate member 3180 as shown in FIG. 22. Reinforcing bars and sheaths in which the height of the stack of the longitudinal block bodies 3170 in the form is increased, thereby preventing the abrupt step difference from occurring so that the upper steel plate 3150 installed thereon is contained in the arcuate formwork 3200. Do not sag below due to the load of pipes and concrete.

Even in such a structure, in the installation site of the arch formwork 3200, the longitudinal block bodies 3170 having a rectangular plate shape made of a perforated plate are laminated according to the calculated height, and the wedge-shaped plates 3180 are placed on the stepped portion to make a sharp step. After reducing, and then supporting the upper steel plate 3150 thereon, the construction work of the formwork support (3100) is made very easy, and the installation of the formwork support (3100) in the field is easy to greatly improve the work productivity.

In the above, the wedge-shaped plate 3180 may be installed in a wedge cross section in which several wedge members 3180a are gathered to reduce a sharp step of the longitudinal block bodies 3170.

As described above, the present invention is to construct a formwork support that is installed on the bottom of the arch formwork for the production of the PSC beam, the longitudinal direction of the rectangular arch form consisting of a perforated plate with a height difference successively above the longitudinal woodwork in the central arch bottom section The block bodies are installed in succession and the upper steel plate is placed thereon so that the arcuate formwork is supported on the upper surface of the upper steel plate.

Therefore, when the formwork support is constructed by using the longitudinal block bodies in the form of rectangular plates, the longitudinal block bodies in the form of perforated plates consisting of perforated plates are simply laminated to the calculated height and the upper steel plates are supported thereon. No need for skilled woodworking, easy installation of formwork supports on site, greatly improving work productivity, and significant reduction of construction costs related to arched formwork by reusing recycled materials without dismantling arched formwork. can do.

<Fifth Embodiment>

In the arcuate PSC beam manufacturing method according to the fifth 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 4200, As shown in FIG. 23, the form support 4100 installs a bottom plate 4410 and a longitudinal spacer 4420 over the horizontal bottom section L1 and the central arch bottom section L2.

The arcuate PSC beam manufacturing method according to the fifth embodiment of the present invention is a bottom plate material having a constant height in the longitudinal direction continuously to the floor A over the horizontal bottom section (L1) and the central arch bottom section (L2) at both ends ( 4410 is installed, such a floor board 4410 is made of wood board.

And the upper surface of the bottom plate 4410 is continuously installed in parallel in the horizontal direction longitudinal longitudinal spacers 4420, the height of which increases from the horizontal bottom portion (B) at both ends toward the central arch bottom (Ba).

The longitudinal spacer 4420 is made of wood pre-fabricated to increase in height through dimension calculation in advance in a factory such as a woodworking, the length so that the longitudinal spacer 4420 of the wood does not fall Between the directional spacers 4420, a fall prevention member 4430 spaced in the longitudinal direction is provided, respectively.

In this structure, the fall prevention material 4430 is also preferably made of wood, and the longitudinal spacer 4420 and the fall prevention material 4430 are each made of a bottom plate 4410 through fasteners such as nails. ) Is fixed at a fixed position. In addition, an upper steel plate 4150 is disposed on the upper surfaces of the longitudinal spacers 4420 and the fall prevention material 4430 so that the arcuate formwork 4200 is supported on the upper surface of the upper steel plate 4150.

As shown in FIG. 24A, the form support 4100 has a low height longitudinal spacer 4420 and an anti-conduction material 4430 on the bottom plate 4410, and an upper steel plate on the bottom plate 4410. 4150 is disposed, and as shown in FIG. 24B, the height increases from the horizontal bottom portion B to the central arch bottom Ba, as shown in FIG. 24B. 4430 is installed on the bottom plate 4410 to support the upper steel plate 4150.

In the central arch bottom section L2, the longitudinal spacer 4420 and the fall prevention material 4430 of the highest size are installed on the bottom plate 4410, and as shown in FIG. 24C, the upper steel plate 4150. Support.

As such, the bottom plate 4410, the longitudinal spacer 4420, and the fall prevention members 4430 used in the arcuate PSC beam manufacturing method according to the fifth embodiment of the present invention are shown in FIG. 25A. Pre-fabricated, then is brought into the production site of the arch formwork 4200 is assembled to formwork support 4100 in the field. Alternatively, the bottom plate 4410, the longitudinal spacer 4420, and the fall prevention member 4430 may be manufactured in a single unit in a factory, and then the unit units may be assembled in the field to form the arch formwork 4200. It can also be assembled into a formwork support 4100 holding up.

According to the arched PSC beam manufacturing method according to the fifth embodiment of the present invention through such a structure can be easily assembled and built the formwork support 4100 installed on the bottom of the arch formwork 4200 in the field arched formwork ( 4200) the production work is made easily, work productivity is improved, and the construction cost can be reduced by reducing the construction period.

In the arcuate PSC beam manufacturing method according to the fifth embodiment of the present invention, the longitudinal spacer 4420 may be formed of a U-shaped steel channel having a predetermined length, as shown in FIG. 25B. Even in such a structure, the longitudinal spacer 4420 of the U-shaped steel channel is prefabricated at the factory, and then is brought into the manufacturing site of the arch formwork 4200, so that the floor board 4410 and the fall prevention material 4430 are in the field. Together with the formwork support 4100.

Alternatively, the bottom plate 4410, the longitudinal spacer 4420 and the fall prevention member 4430 of the U-shaped steel channel are manufactured at the factory as one unit unit, and each unit unit is brought into the field to form the arcuate shape. Formwork 4200 may be assembled into a formwork support 4100 holding up.

A structure for assembling the longitudinal spacers 4420 of such a U-shaped steel channel is shown in FIGS. 26A and 26B.

As shown in FIG. 26A, the longitudinal spacers 4420 of the U-shaped steel channel have bolts 4452 and nuts on both sides thereof with fastening plates 4422 in a state in which a predetermined length is in contact with each other in the longitudinal direction. Fasteners 4450 including 4454 to be connected to each other.

In this structure, the longitudinal spacers 4420 have fastening plates 4422 formed at both sides thereof, and the fastening plates 4422 are fixed to the longitudinal spacers 4420 by welding steel plates of a predetermined size and bolt holes. After forming 4442a, the fastener 4450 including the bolt 4452 and the nut 4454 are connected to each other as shown in FIG. 26B.

Through such an assembly structure, the longitudinal spacer 4420 of the U-shaped steel channel is manufactured in accordance with a pre-designed dimension at the factory, and then brought into the production site of the arch formwork 4200, and the floor board material ( 4410 and fall prevention materials 4430 are easily assembled into form support 4100.

In addition, even when the bottom plate 4410, the longitudinal spacer 4420 of the U-shaped steel channel and the fall prevention member 4430 are manufactured at the factory as one unit unit, and each unit unit is brought into the field, The formwork support 4100 holding the arched formwork 4200 can be easily assembled using the fastener 4450.

As described above, in the present invention, the longitudinal spacer 4420 having a height increasing from the horizontal bottom L1 at both ends to the central arch bottom L2 is manufactured at the factory and brought into the field, and then the horizontal spacer L4 is continuously connected in parallel in the horizontal direction. After installation, there is provided a fall prevention member 4430 spaced in the longitudinal direction therebetween, and then arranged the upper steel plate 4150 on the upper surface of the longitudinal spacer 4420 and the fall prevention member 4430, arcuate Formwork 4200 is to be supported on the upper surface of the upper steel plate (4150).

Therefore, the present invention can be easily assembled and built in the field formwork support (4100) installed on the bottom of the arch formwork 4200 is improved work productivity, it is possible to reduce the construction cost.

Sixth Example

In the arcuate PSC beam manufacturing method according to the sixth 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 5200, As shown in FIG. 27, the formwork support 5100 extends in the longitudinal direction with a predetermined lateral distance from the horizontal bottom section L1 and the central arch bottom section L2. ).

Such longitudinal squares 5110 are preferably arranged to extend in the longitudinal direction in three rows that maintain a constant horizontal gap, as shown in FIG.

And the upper surface of the longitudinal bar (5110) are arranged in the longitudinal direction spaced apart a large number of the horizontal bar (5130) with a high difference, such as the horizontal bar (5130), as shown in Figure 28b and 28c, A plurality of standardized pieces of wood are stacked and stacked while maintaining the height corresponding to the height difference Δh occurring at the horizontal bottom section L1 and the central arch bottom section L2 at both ends of the arch formwork 5200.

In addition, an upper steel plate 5150 is disposed on the upper side of the lateral wooden box 5130 so that the arcuate formwork 5200 is supported on the upper surface of the upper steel plate 5150.

In addition, a plurality of height adjustment corners 5140 are additionally disposed between the lateral corners 5130 and the upper steel plate 5150 for accurate height adjustment.

Such a structure is shown in detail in FIG.

That is, the arc-shaped PSC beam manufacturing method according to the sixth embodiment of the present invention extends in the longitudinal direction with a predetermined lateral distance from the bottom A of the horizontal bottom section L1 and the central arch bottom section L2 at both ends. A plurality of longitudinal corners (5110) are arranged in succession, the upper surface of the plurality of lateral corners (5130) spaced apart in the longitudinal direction with a height difference, and the height adjustment corners on the upper side of the lateral corners (5130) An additional arrangement 5140 is maintained to maintain the height difference Δh occurring in the horizontal bottom section L1 and the central arch bottom section L2 at both ends of the arch formwork 5200.

In addition, the upper steel plate (5150) is disposed on the upper side of the transverse bark 5130 and the height adjustment bark 5140 so that the arcuate formwork 5200 is supported on the upper surface of the upper plate (5150).

Thus, by using the longitudinal bark 5110, the horizontal bark (5130) and the height adjustment angle bar (5140) is laminated, the longitudinal bark (5110), the horizontal bark through the fasteners such as nail (nail) 5130 and the height adjustment by connecting the integral through the 5140, it is easy to build an integrated structure, and to build the formwork support 5100 by placing the upper steel plate (5150) on it, a separate skilled worker at the work site Without being able to build the formwork support 5100 easily.

 In addition, the height of the horizontal bark 5130 and the height adjusting bark 5140 is lower than the height of the horizontal bark 5140, the horizontal bottom section (L1) of both ends of the arch formwork 5200 As it goes from the central arch bottom section (L2) from the larger number is stacked on the cross-beams 5140.

As described above, the present invention is the horizontal bottom section (L1) and the central arch at both ends of the arch formwork 5200 through the calculation of the height of each predetermined longitudinal bark 5110, transverse bark 5130 and height adjustment bark 5140. The grade is given to correspond to the height difference (Δh) generated in the bottom section (L2) laminated on the floor (A) of the work site, it may be connected integrally through the fastener. As described above, according to the present invention, the arch formwork 5200 can be easily constructed in the field, thereby greatly improving work productivity and thereby reducing construction cost.

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.

FIG. 4 is a perspective view illustrating a structure in which channel members are disposed on a guide transverse horn in order to explain a method of manufacturing an arcuate PSC beam according to a first embodiment of the present invention.

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 a perspective view illustrating a structure in which a longitudinal beams are disposed on a guide transverse beam in order to explain the arcuate PSC beam manufacturing method according to the first embodiment of the present invention.

FIG. 7 is a partial cross-sectional view of FIG. 6, wherein a is A-A, b is B-B, and c is C-C.

FIG. 8 is a perspective view illustrating a structure in which earth and sand are filled and compacted between guide transverse squares as a view illustrating a method of manufacturing an arcuate PSC beam according to a first embodiment of the present invention.

FIG. 9 is a perspective view illustrating a structure in which intermediate guide transverse beams are disposed between guide transverse beams to explain an arcuate PSC beam manufacturing method according to the first embodiment of the present invention.

FIG. 10 is a perspective view illustrating a method of manufacturing an arcuate PSC beam according to a first exemplary embodiment of the present invention.

FIG. 11 is a perspective view illustrating a structure in which an arcuate PSC beam is manufactured according to a second exemplary embodiment of the present invention, in which a crossbar and a channel member are disposed while having a height difference on upper surfaces of additional longitudinal beams.

FIG. 12 is a partial cross-sectional view of FIG. 11, wherein a is A-A, b is B-B, and c is C-C.

FIG. 13 is a view illustrating a method of manufacturing an arcuate PSC beam according to a second embodiment of the present invention, in which a horizontal gap and a longitudinal spacer or a horizontal spacer and a channel member are provided with a height difference on the upper surfaces of additional longitudinal beams. It is a perspective view which shows the arranged structure.

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 for explaining the arc-shaped PSC beam manufacturing method according to a third embodiment of the present invention, a formwork assembled in the field after the precise manufacturing of the steel block in the factory made of steel using a plurality of H-shaped and 형 -shaped steel A perspective view of the support.

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.

Figure 17a is a perspective view showing a steel block used to build a formwork support in the arcuate PSC beam manufacturing method according to a third embodiment of the present invention.

FIG. 17B is an exploded perspective view showing a steel block used to build a formwork support in the arcuate PSC beam manufacturing method according to the third embodiment of the present invention.

18 is integrally connected to each other using a fastener including a bolt and a nut to the fastening plate formed on the side of the longitudinal U-shaped channel in order to build the formwork support in the arcuate PSC beam manufacturing method according to a third embodiment of the present invention It is the exploded perspective view that I connected.

FIG. 19 is a perspective view illustrating a method of constructing an arch support PSC beam according to a fourth exemplary embodiment of the present invention and constructing a form support using longitudinal block bodies in the form of stacked rectangular plates having a double-plate structure. .

FIG. 20 is a partial cross-sectional view of FIG. 19, wherein a is A-A, b is B-B, and c is C-C.

21 is for explaining an arcuate PSC beam manufacturing method according to a fourth embodiment of the present invention, the longitudinal block body of the laminated rectangular plate form made of a slab and the wedge-shaped plate to install the stepped portion in the step portion to form a support It is a perspective view which shows the structure to build.

FIG. 22 is a side cross-sectional view of FIG. 21.

FIG. 23 is a view illustrating a method of fabricating an arcuate PSC beam according to a fifth embodiment of the present invention, and illustrates a structure for constructing a formwork support using longitudinal spacers and upper steel plates manufactured to increase in height at a factory. One perspective view.

FIG. 24 is a partial cross-sectional view of FIG. 23, wherein a is A-A, b is B-B, and c is C-C.

FIG. 25A illustrates a structure for constructing a formwork support using a bottom plate made of wood, a longitudinal spacer, a fall prevention material, and an upper steel plate used in the arcuate PSC beam manufacturing method according to the fifth embodiment of the present invention. Perspective view.

25B illustrates a structure for constructing a formwork support using a bottom plate, a longitudinal spacer formed of a U-shaped steel channel, an anti-conduction material, and an upper steel plate used in the arcuate PSC beam manufacturing method according to the fifth embodiment of the present invention. It is a perspective view showing.

FIG. 26A is an exploded perspective view illustrating an enlarged structure in which longitudinal spacers of a U-shaped steel channel are connected to each other using fastening plates and fasteners in an arcuate PSC beam manufacturing method according to a fifth exemplary embodiment of the present invention.

FIG. 26B is a side view of FIG. 26A.

FIG. 27 is a view illustrating a method of fabricating an arcuate PSC beam according to a sixth embodiment of the present invention. A structure for constructing a formwork support using a longitudinal timber, a transverse timber, and a height adjustment timber made of wood of a standardized size is shown. It is a perspective view showing.

FIG. 28 is a partial cross-sectional view of FIG. 27, wherein a is A-A, b is B-B, and c is C-C.

FIG. 29 illustrates a structure in which a transverse timber and a height adjustment timber are laminated on a longitudinal timber made of wood of standard size according to a sixth embodiment of the present invention, and a formwork support is constructed by fixing an upper steel plate thereon; Exploded perspective 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

100,1100,2100,3100,4100,5100 .... formwork support

110 ...

120 ..... Cross-cut Square 130 .... Guide Cross-cut Square

140 .... Channel member 142 .... Longitudinal square

150 ..... upper steel plate 160 ..... middle guides

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

310 .... Magazine Fingerboard 1110 ....

1111 .... Extra longitudinal box 1120 ..... Transverse box

1140 .... longitudinal corners or channel members 1150 .....

1170 ..... longitudinal spacer 1180 .... transverse spacer

1200 .... arched formwork 2150 .... upper steel plate

2200 .... Arched formwork 2310 .... Longitudinal c-channel

2312 .... Fastener 2315 .... Fastener

2316a .... Bolt 2316b ... Nut

2320 .... H- or I-beam 2330 .... Transverse C-channel

2350 .... steel block 3110 ....

3120 .... Cross sections 3170 .... Longitudinal block

3180 .... Wedge Plate 3180a .... Wedge Member

3200 .... Arch formwork 4150 .... Upper steel plate

4200 .... arched formwork 4410 .... floorboard

4420 .... longitudinal spacer 4422 .... fastening plate

4430 .... Falling prevention material 4450 .... Fasteners

4452 .... Bolt 4454 .... Nut

5110 .... Longitudinal box 5130 .... Longitudinal box

5140 .... Height adjustment angle 5150 .... Upper steel plate

5200 .... arched formwork

A ..... bottom B ..... horizontal bottom

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 (13)

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, After arranging a plurality of guide transverse lumber 130 on the bottom of the central arch bottom section (L2) spaced apart from the horizontal bottom (B) with a height difference therebetween, the respective ends from the horizontal bottom (B) After the longitudinal lumber 142 or the channel member 140 is spaced apart in the lateral direction between the guide transverse wood 130 upper surfaces, the upper steel plate 150 on the longitudinal wood or channel member upper surface 140. Arrange the arcuate PSC beam manufacturing method so that the arcuate formwork 200 is supported on the upper surface of the upper steel plate (150). The lower space of the bottom of the central arch bottom section (L2) and the guide transverse wood 130 and the longitudinal wood 142 or the channel member 140, The earth and sand 300 is chopped between the guide lateral wood block 130 placed first, Longitudinal wood block 142 or the channel member 140 is disposed on the chopped soil 300, The upper steel plate 150 is to be disposed on the upper surface of the lumber 142 or the channel member 140, The earth and sand 300 is arranged on both sides of the sideboard between the guide lateral lumber 130, the first arranged the sideboards 310, to fill the earth and sand 300 between the matages board 310 to be compacted. How to make an arched PSC beam. The lower space of the bottom of the central arch bottom section (L2) and the guide transverse wood 130 and the longitudinal wood 142 or the channel member 140, Between the first guide cross-sections 130 placed between the intermediate guide transverse timbers 160 are further installed, The longitudinal beam 142 or the channel member 140 is disposed on the first guide transverse timber 130 and the intermediate guide transverse timber 160, Arched PSC beam manufacturing method so that the upper steel plate (150) is disposed on the upper surface of the longitudinal square (142) or the channel member (140). After installing the formwork support 1100 on the floor (A), the arch support form 1200 for the production of the PSC beam on the formwork support, and install the reinforcing bar, the tension material inside the arch formwork, and then concrete 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 1200, the formwork support 1100 is The longitudinal beam 1110 is disposed in the horizontal bottom section L1 at both ends so as to extend in the longitudinal direction at a predetermined horizontal distance, and the plurality of horizontal beams 1120 are spaced apart on the upper surface of the longitudinal beams. In parallel to each other, Installed in the central arch bottom section (L2) to further extend the longitudinal longitudinal 1110 between the longitudinal timber 1110, the transverse longitudinal while leaving a height difference on the upper surface of the additional longitudinal squares (1111) After the spaced apart (1120) in the longitudinal direction, and the longitudinal bark or channel member 1140 laterally spaced disposed on the upper surface of each of the transverse timber 1120, the upper surface of the longitudinal bark or channel member ( Arranging the upper steel plate (1150) on the 1140, the arcuate PSC beam manufacturing method so that the arcuate formwork (1200) is supported on the upper surface of the upper steel plate (1150). The longitudinal spacer 1170 or the horizontal spacers of claim 4, wherein the longitudinal spacers 1170 or the transverse spacers of the central arch bottom section L2 do not have a large height difference between the transverse horns 1120 and the longitudinal horns or the channel member 1140. 1180) is further installed on the upper surface of the transverse angular (1120), and the arcuate PSC beam manufacturing method for the longitudinal angular or channel member (1140) is installed on the upper surface of the longitudinal spacer (1170). After installing the formwork support 2100 on the floor (A), the arch support form 2200 for manufacturing the PSC beam on the formwork support, and install the reinforcing bar, the tension material inside the arch formwork, and then concrete 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 2200, the formwork support 2100 is The horizontal bottom section L1 and the central arch bottom section L2 A longitudinal U-shaped channel 2310 is installed at the bottom to extend in the longitudinal direction with a predetermined horizontal separation distance, and the longitudinal U-shaped channel 2310 has a predetermined length in contact with each other in the longitudinal direction. Sides are connected to each other integrally using fasteners 2315 including bolts 2316a and nuts 2316b with fastening plates 2312, Inserting the lower portion of the H-shaped or I-shaped steel 2320 in the longitudinal direction while having a height difference in each of the c-shaped channel (2310), and installed in the upper surface of the H-shaped or I-shaped steel (2320) After the channel 2330 is installed, an upper steel plate 2150 is disposed on an upper surface of the lateral U-shaped channel 2330 so that the arcuate formwork 2200 is supported on the upper surface of the upper steel plate 2150. How to make. The H-shaped or I-shaped steel 2320 provided with a height difference thereon, and a transverse c-shaped provided on an upper surface of the H- or I-shaped steel 2320. The channel 2330 and the upper steel plate 2150 installed on the upper surface of the lateral U-shaped channel 2330 are manufactured as steel blocks 2350 at the factory, and then assembled at a formwork installation site so that the formwork support 2100 is manufactured. How to make an arched PSC beam. After installing the formwork support (3100) on the floor (A), the arch support (3200) for manufacturing the PSC beam is installed on the formwork support, reinforcement, tension material is installed in the arch formwork, and then concrete 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 3200, the formwork support 3100 is The longitudinal timber 3110 is disposed in the horizontal bottom section L1 at both ends to extend in the longitudinal direction with a predetermined lateral spacing distance, and a plurality of longitudinal timbers 3120 are spaced apart on the upper surface of the longitudinal timbers. In parallel to each other, In the central arch bottom section (L2) to the longitudinal block body 3170 of the rectangular plate shape stacked in succession to the longitudinal wood (3110) with a height difference to be installed in succession, the continuous rectangular plate shape of Arranging the upper steel plate (3150) on the upper surface of the longitudinal block body (3170), the arcuate formwork (3200) to support the arcuate PSC beam manufacturing method to the upper surface of the upper steel plate (3150). 10. The arcuate PSC beam of claim 8, wherein the stepped portion of the longitudinal block body 3170 in the form of a laminated rectangular plate is further provided with a wedge-shaped plate 3180 to prevent the upper steel plate 3150 from sagging due to the stepped portion. How to make. After installing the formwork support (4100) on the floor (A), the arch support (4200) for the production of the PSC beam is installed on the formwork support, and the reinforcement, the tension material is installed inside the arch formwork, and then concrete 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 4200, the formwork support 4100 is A bottom plate 4410 having a constant height is installed continuously in the longitudinal direction on the bottom over the horizontal bottom section L1 and the central arch bottom section L2, and the horizontal bottom B at both ends on the bottom plate 4410 upper surface. A longitudinal spacer 4420 continuously increasing in parallel in the transverse direction, and the longitudinal spacer 4420 so that the longitudinal spacer 4420 does not fall. A longitudinal spaced apart prevention member 4430 is installed therebetween, and the longitudinal spacer 4420 is connected to each other in a state in which the predetermined lengths of wood are in contact with each other in the longitudinal direction on the upper surface of the bottom plate 4410. On the other hand, by placing the upper steel plate 4150 on the upper surface of the longitudinal spacer 4420 and the fall prevention member 4430, an arcuate PSC to support the arch formwork 4200 to the upper surface of the upper steel plate 4150. How to make a beam. 12. The bolt 4452 and the nut 4454 of claim 10, wherein the longitudinal spacers 4420 are fastened to the sides of each other by fastening plates 4422, with the U-shaped steel channels of constant length in contact with each other in the longitudinal direction. Arched PSC beam manufacturing method to be connected to each other using a fastener (4450) comprising a). After installing the formwork support 5100 on the bottom (A), the arch support form 5200 for manufacturing the PSC beam on the formwork support, and install the reinforcing bar, the tension material inside the arch formwork, and then concrete 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 5200, the formwork support 5100 is A longitudinal timber 5210 is disposed to extend in the longitudinal direction at a predetermined horizontal distance from the horizontal bottom section L1 and the central arch bottom section L2, and an upper surface of the longitudinal timber 5210. After arranging a plurality of transverse wood 5130 in the longitudinal direction with a height difference, the upper steel plate 5150 is disposed on the upper side of the transverse wood 5130, the arch formwork 5200 is an upper steel sheet ( 5150) A method of making an arcuate PSC beam supported on an upper surface. The method according to claim 12, wherein the height adjustment bark 5140 is further disposed between the cross direction bark 5130 and the upper steel plate (5150) to adjust the height of the upper steel plate (5150), the transverse bark (5130) And the height adjustment bark 5140 is integrally fixed to the upper surface of the longitudinal bark 5210 through a fastener including a nail, the height of the height bark 5140 is lower than the height of the transverse bark 5140 , Arched PSC beam manufacturing method in which a larger number is stacked from the horizontal bottom section (L1) of both ends of the arch formwork 5200 toward the central arch bottom section (L2).

Images