JP2007044956A - Mold device for curved line beam - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mold device for manufacturing a curved line beam which solves the problems that, for example, equipment in a conventional method is enlarged and an equipment cost is increased. <P>SOLUTION: In the mold device 1 for manufacturing the plane curved line-shaped curved line beam, for example, a roller-type or linear-type transfer device is installed in the lower part of a support frame 14 supporting a side part mold 13 in the mold device 1. The support frame 14 is made movable. One end side of a tumble preventing member 40 preventing the tumbling of the support frame 14 is connected to the support frame 14, and the tumble preventing member 40 is supported on the side of a pillar 5 installed on a base frame 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a curved girder form apparatus for producing a curved girder having a curved surface such as an arc or the like, or a curved girder such as a track girder having an upper surface inclined to have a cant amount and a side surface inclined. About.

  Conventionally, as a girder having a curve in a new transportation system such as a linear type, an LRT type, a monorail type, or an AGT type, a concrete girder for a monorail track girder or a concrete girder with a small curvature has been manufactured. . If the girder curve has a constant curvature, a wooden formwork or a steel formwork is processed according to the curve, and a concrete curve girder has been produced using this.

  However, in order to produce a plurality of girders with different curvatures in the longitudinal direction of the member, side surfaces being inclined in the vertical direction, and girder cant, the above-mentioned conventional method requires a great deal of mold cost. Further, the side mold must be bent freely according to the plane curvature, and there is a problem that it is difficult in the conventional apparatus.

In order to bend the side part formwork freely according to the plane curvature, for example, as shown in FIG. 11 (a), a concrete foundation 60 is constructed on the ground or the like, and the lower part is embedded in the concrete foundation 60. A plurality of strong independent support columns 61 are fixed on both sides of the girders, a suspension beam 62 is attached to the support column 61, a side mold 63 is suspended from the suspension beam 62, and a side mold 63 is pressed by a push rod 64. A curved girder 65 was manufactured by pressing the side mold plate 64 made of a steel plate to obtain a predetermined curvature. (For example, see Patent Document 1)
Japanese Examined Patent Publication No. 61-9122

However, in the above-described conventional method shown in FIG. 11 (a), it is necessary to firmly provide a large number of independent large-sized support columns 61, and a dedicated form support device is required, which increases the size of the equipment, and the equipment period is long. At the same time, there is a problem that the equipment cost becomes large. Moreover, since the work had to be performed between the columns, the work was complicated. In addition, since the manufactured girder must be further transported to the erection point, a method that leads to a construction period including transportation time and a factor of cost increase has been taken.
It is an object of the present invention to provide a curved girder-working formwork apparatus that can solve the above-mentioned problems.

  In order to solve the above-mentioned problem advantageously, in the curved girder working type frame apparatus of the first invention, in the curved girder working type frame apparatus for producing a curved girder having a planar curved shape, A moving device such as a roller type or a linear type is provided below the support frame that supports the side mold in the mold apparatus, so that the support frame can be moved, and the support frame prevents its falling. One end side of the fall prevention member is connected, and the fall prevention member is supported by a column side provided on the base frame.

  According to a second aspect of the present invention, in the curved girder-operated formwork device according to the first aspect of the present invention, the fall prevention member is supported so as to be capable of moving forward or backward with respect to the column side.

  Further, in the curved girder-working formwork device of the third invention, in the curved girder-working formwork device of the first invention or the second invention, the fall prevention member can be moved in accordance with the fall of the side frame due to the transverse gradient. It is characterized by being supported.

Moreover, in the 4th invention, in the curve girder action type | mold form apparatus in any one of the 1st invention-the 3rd invention, on the ground or a solid foundation, the base in the curve girder action type | mold formwork apparatus is spaced apart in the front-back direction. A frame is placed, and a support column is erected on the base frame.

According to the first aspect of the present invention, a roller-type or linear-type moving device is provided below the support frame that supports the side mold, so that the support frame can be moved. Since the support frame that supports the side mold is connected to the fall prevention member that is supported on the column side provided on the base frame, the side mold It is possible to prevent the side mold and the support frame from overturning at the time of curve arrangement or demolding movement.
Further, as in the second aspect of the invention, when the fall prevention member is supported so as to be able to move forward or backward relative to the support column side, even if the support frame in the side mold is moved forward or backward, the side mold The frame can be supported in a stable state without falling down.
As in the third invention, when the overturn prevention member is supported so as to be movable according to the tilt angle of the side mold frame that is inclined in the vertical direction due to the transverse gradient, the side mold frame is tilted in the vertical direction However, it is possible to prevent the tilted support frame and side molds from falling.
As in the fourth invention, on the ground or a solid foundation, a base frame in a curved girder working type frame device is placed at an interval in the front-rear direction, and a support column is erected on the base frame. It is not necessary to embed and arrange the lower part of the pillar in the concrete foundation provided on the ground, and it can be installed on the base frame with bolts etc., so the pillar is easy to install and the base frame and the pillar are small Since it is easy to transport and remove the base frame and support pillars of the foundation structure in the curved girder working formwork device, it can be assembled near the girder construction site to produce a concrete girder, Compared to manufacturing concrete girders in the factory and transporting them to the site, the transportation cost is significantly lower and the girder length is longer. Since it is Rukoto, it is possible to produce a curve digits long in the vicinity of the construction site.

    Next, the present invention will be described in detail based on the illustrated embodiment.

  FIGS. 1-6 shows the state which constructed | assembled the curve girder using the curve girder action type | mold frame apparatus 1 and its curve girder action type | mold frame apparatus 1 of one Embodiment of this invention, 1 is a partially longitudinal front view of a curved girder working formwork apparatus, FIG. 2 is a longitudinal front view showing a part of FIG. 1 on an enlarged scale, and FIG. 3 is a partial view of a curved girder working formwork apparatus. FIG. 4 is a schematic plan view of a curved girder working formwork apparatus, FIG. 5 is a longitudinal front view showing a portion that is eccentric at the curved part, and FIG. 6 is a side formwork in the curved girder working formwork apparatus. It is a vertical front view which shows the state which has demolded.

  Briefly describing the structure of the curved girder working formwork apparatus 1 of the present invention and the assembling procedure thereof, the ground is disposed in the ground in the vicinity of the site in the front-rear direction and in parallel, and disposed of for a predetermined length in the left-right direction. The base frame 2 such as H-shaped steel is placed on each of the solid foundations, and the lower flange 3 of the base frame 2 is provided on the solid foundation 66. The base frame 2 is fixed in parallel to the solid foundation 66 by an insert or anchor bolt (not shown), and a plurality of base frames 2 are spaced in the front-rear direction and provided in parallel.

  On the upper flange 4 in each base frame 2, a lower end portion of a support column 5 having a pair of channel steels 5 a is placed at an interval in the width direction, and the upper flange 4 is attached and detached by bolts and nuts 6. It is fixed freely. Each base frame 2 is installed so that the columns 5 are opposed to each other with an interval in the longitudinal direction of the base frame 2.

  A plurality of bottom frame vertical beams 7 made of an H-shaped steel material arranged so as to extend in the front-rear direction are placed in series in the middle part of the longitudinal direction of each base frame 2 spaced in the front-rear direction. At the same time, they are placed in parallel in the left-right direction, and are detachably attached to the upper flange 3 of the base frame 2 by bolts and nuts, and cross over the bottom frame vertical beams 7 in the left-right direction. The bottom frame bases 8 are placed and arranged in parallel in the front-rear direction, and the bottoms of the bottom frame bases 8 are detachably attached by bolts and nuts. The divided mold bottom mold units 10 are placed in series so as to extend in the front-rear direction, and the divided mold bottom mold units 10 are detachably installed to form the bottom mold 9. . Each bottom mold unit 10 is detachably provided by a bolt / nut at the bottom frame 8 portion.

  The length from the first base frame 2 to the last base frame 2 in the front-rear direction and the length of the bottom mold 9 are set to, for example, about 20 m to 30 m, or longer than that depending on the construction site. The

  The left and right side ends of the bottom mold 9 and the column 5 are connected by side frame demounting receiving beams 11 made of channel steel or H-shaped steel, and the left and right sides of the bottom frame base 8 and the column 5 are supported. The brackets 12 are detachably provided by bolts and nuts, and both end portions of the side frame demounting receiving beams 11 are mounted on the brackets 12 and are detachably fixed by bolts and nuts. Yes.

  On the bottom mold 9, a pair of side molds 13 are arranged so as to extend in the front-rear direction so as to face each other with a gap in the left-right direction. Each side mold 13 is parallel to a vertical support frame 14 arranged in the front-rear direction so that the center is located on the central axis between the channel steels constituting each column 5. A large number of rollers 15 are provided at the lower end of each support frame 14 so as to be movable in the left-right direction. The roller 15 of the support frame 14 rolls in the left-right direction from the upper surface of the bottom mold frame 9 to the upper surface of the receiving frame 11 for removing the side frame, so that the support frame 14 is received from above the bottom mold frame 9 for receiving the side frame. It can be moved on the beam 11 in the left-right direction. Although not shown in the drawings in place of the roller 15, a wheel may be used, or a ball circulation type in which a slide rail is fitted to the bottom mold frame side and side frame demounting receiving beam 11 and fitted to the slide rail. A linear slide member may be attached to the lower portion of the support frame 14 and slidable linearly.

  On the outside of the formwork face plate 17 of each support frame 14, a short crosspiece 16 is provided with an interval in the vertical direction, and is attached to the support frame 14 detachably by bolts and nuts not shown in the figure. An L metal fitting (not shown) attached to the mold surface plate 17 is provided with a mold surface plate 17 made of a steel plate so as to extend in the front-rear direction. Are detachably attached to the crosspiece 16 with bolts and nuts.

  A convex mold 18 extending in the front-rear direction is provided in the middle part of the mold surface plate 17 in the up-down direction.

  Brackets 20 are attached to the upper and lower portions outside the support frames 14 at intervals, and each bracket 20 has a case (casing) 22 in a screw-type jack 21 as shown in an enlarged view in FIG. The rear end portion (the end portion from the support frame) of the side is attached to the vertical axis 23 so as to be horizontally rotatable, and a female screw portion is provided inside the front end portion of the case 22. A male screw portion 27 in a male screw member 26 having a male screw portion at the end and a large-diameter annular stopper 24 at the tip and a rotating tool engaging portion 25 such as a hexagonal head at the outer tip is screwed into the tip. Connected.

  Further, a locking groove portion 28 formed of a small diameter shaft portion is provided in the front end portion of the male screw member 26 in the longitudinal direction of the male screw member 26 in the vicinity of the annular stopper 24.

The male screw member 26 is inserted into a metal fitting 30 attached to the column 5, and an annular stopper 24 in the male screw member 26 is rotatably supported by the metal fitting 30.
The bracket 30 is disposed on the column 5 side with a hollow frame type bracket 31 that is detachably fixed by bolts and nuts, and on the upper and lower portions of the frame type bracket 31 so that the end portion is on the inside. In addition, there is provided a movable metal support 32 that is connected to the vertical axis 19 so as to be horizontally rotatable.

  The movable support 32 includes a pair of inner support vertical plates 33 and outer support vertical plates 34 which are parallel to each other on the outer end side and are integrally formed by a short connecting plate. The vertical plate 33 and the outer support vertical plate 34 are provided with an insertion hole for the male screw member 26 at the center, and the male screw member 26 inserted from the outer side into the insertion hole has its annular stopper 24 connected to the outer support. The vertical plate 34 is rotatably supported by an end surface around the hole in the central portion.

  A gap is formed between the inner support vertical plate 33 and the outer support vertical plate 34 for inserting and arranging a pair of front and rear divided plate-like stopper members 35. When the stop groove portion 28 is positioned in the gap and the side mold 13 is disposed at a predetermined position, a pair of front and rear plate-like stopper members 35 are inserted into the gap and fitted in the locking groove portion 28. Then, by detachably coupling with a bolt or the like and restraining the movement of the male screw member 26 in the axial direction, the male screw member 26 can be rotated at a fixed position, and thereby the side portion connected to the case 22 side. The mold 13 can be moved in the left-right direction or adjusted in the vertical direction, and the side mold 13 can be positioned in the left-right direction.

  Here, with reference to FIG. 13, a pair of front and rear plate stopper members 35 disposed between the inner support vertical plate 33 and the outer support vertical plate 34 will be described. Is provided with a concave portion 75 fitted in the engaging groove portion 28 of the male screw member 26 at the center portion in the vertical direction, and one end side of the connecting bolt 76 is connected to the one upper side by a vertical axis 82 so as to be horizontally rotatable. A bracket 77 with a horizontal slit 78 for arranging the other end side of the connecting bolt 76 is provided on the other upper portion, and the upper portion of each plate-like stopper member 35 is a bracket. It is detachably connected by a nut 80 arranged outside 79. Further, a bolt insertion hole 81 is provided at the lower portion of each plate-like stopper member 35 for detachably fixing to a female screw hole (not shown) provided at the lower portion of the inner support vertical plate 33 with a bolt.

  As shown in FIGS. 1 and 2, a bar-shaped gauge 36 is disposed in parallel with each screw-type jack 21, and the bar-shaped gauge 36 is connected to the case 22 of the screw-type jack 21 and is attached to the support frame 14. One end of the bar gauge 36 is abutted, and the other end of the bar gauge 36 is slidably supported by a slide support bracket 37 provided on the outside of the column 5.

A rotating tool is engaged with a rotating tool engaging portion 25 at an end portion of each of the plurality of screw-type jacks 21 located in the intermediate portion in the front-rear direction, and the male screw member 26 in the screw-type jack 21 is fixed. When the screw type jack 21 is shortened by rotating it, the middle part of the side mold 13 can be pulled toward the support column 5 side, so that the screw type jack 21 located at the intermediate part in the front-rear direction is pulled toward the support column 5 side. By pushing or pushing the side mold 13 on the opposite side, each side mold 13 can be curved in a substantially arcuate shape. Further, the face plate of the side mold 13 can be inclined in the vertical direction by appropriately adjusting the pulling dimensions or the pushing dimensions of the upper and lower screw jacks 21.
Similarly, in the screw-type jack 21 positioned on the opposite side in the left-right direction, the rotary tool is engaged with the rotary tool engaging portion 25 at the end of each of the plurality of screw-type jacks 21 positioned in the middle portion in the front-rear direction. When the male screw member 26 in the screw-type jack 21 is rotated at a fixed position and the screw-type jack 21 is extended, the plane of the side mold 13 is separated from the column 5 side by a substantially arcuate shape. Can have a curvature. Moreover, the side part formwork 13 can be inclinedly arranged in the up-down direction by changing the extrusion amount of the upper and lower screw type jacks 21.
Furthermore, the displacement amount of the side mold can be accurately measured by confirming the dimensions of the bar-shaped gauge 36 on the slide support member side so as to have a predetermined arcuate curvature and a vertically inclined arrangement. It has been made possible.

  Between the upper screw type jack 21 and the lower bar gauge 36, a plurality of brackets 38 are detachably attached with bolts at substantially the center of each support frame 14 at intervals in the vertical direction. A plurality of horizontal brackets 39 are provided in the vertical portion 41 on one end side of the side formwork overturn preventing member 40 disposed between the groove steels to be spaced apart in the vertical direction, and each bracket 38 on the support frame 14 side The upper and lower joints with the horizontal brackets 39 are connected by a vertical axis in which one or both of the upper and lower joints are inserted and disposed in a horizontally long slot, and by the clearance between the vertical axis and the slot, Connection in an inclined state in the vertical direction on the side mold 13 side is allowed.

  The upper and lower surface portions of the middle portion of the side formwork overturn preventing member 40 are an upper support roller 42 and a lower support roller 43 that are rotatably supported by a horizontal shaft that is detachably provided on each grooved steel 5 a of the column 5. And is supported by. A vertical connection member 44 is provided at the other end of the side formwork overturn prevention member 40, and one end of a wire body, rope, chain, or the like or a cable body 45 is connected to the vertical portion 41 on the one end side. The intermediate portion of the strip or cord 45 is wound around a drum 47 of a manual winch 46 that is detachably attached to the column 5 with bolts or the like, and the strip or cord fed out from the drum 47 is wound. The other end of the body 45 is connected to the vertical connecting member 44.

  Accordingly, by rotating the handle 29 of the manual winch 46 forward or backward, the side mold 13 and the overturn preventing member 40 can be moved forward or backward in the left-right direction. When the manual winch 46 is operated to move the side formwork overturn preventing member 40 forward or backward, the male screw member with the pair of plate-like stopper members 35 removed from the screw jack 21 is removed. The screwless shaft portion at the end of 26 is slidably supported by the movable bracket 32.

  Next, the relationship between the lower end of the side mold 13 and the bottom mold 9 will be described. As shown in FIGS. 7 to 9, the bottom horizontal rail attached to the mold face plate 17 in the side mold. A pair of parallel pivot arm supporting vertical plates 48 are disposed at a lower portion of the material 16 and the lower end portion of the formwork face plate 17, and their base end portions are fixed by welding. An intermediate portion of a rotating arm 49 is disposed between the arm support vertical plates 48 and can be rotated by a horizontal shaft 50 such as a bolt or a nut mounted so as to be inserted through the holes in the front-rear direction. Is provided. Each rotary arm support vertical plate 48 is provided with a rectangular wedge insertion hole 51 on the vertical line of the horizontal axis 50, and a rectangular wedge insertion hole 52 on the horizontal line of the horizontal axis 50. The radial dimension from the horizontal axis 50 is provided at the same distance.

  In addition, a rectangular wedge insertion hole 53 is provided on one end side of the rotation arm 49. When the rotation arm 49 is in a vertical state or a horizontal state, the wedge insertion hole 53 of the rotation arm 49 As shown in FIG. 7, the rotating arm 49 is in a vertical state (vertical direction) or is shown in FIG. 9B by the wedge 54 inserted and disposed across the wedge insertion hole 52 of each rotating arm support vertical plate 48. Thus, the position can be adjusted in a horizontal state (sideways).

  Further, a support member 55 having an L-shaped cross section is fixed to the other end portion of the adjacent rotating arms 49 with a space in the front-rear direction by welding or the like, and a female screw member 56 is welded to the inside of the support member 55. Further, a lock nut 57 is disposed outside the support member 55 and is screwed into the lock 57, inserted into the through hole of the support member 55, and screwed into the female screw member 56. Is installed.

  The lower surface of the mold surface plate 17 is arranged with a gap so as to float above the upper surface of the bottom mold frame 9, and the gap G between the lower surface of the mold surface plate 17 and the upper surface of the bottom mold frame 9 is long. The rubber face plate 59 is disposed, and the inclined upper surface of the rubber face plate 59 is brought to the lower end surface of the mold face plate 17 through the L-shaped steel plate at the end of the rubber face wood 59 by the pressing bolt 58. By pressing, the gap between the lower surface of the mold surface plate 17 and the upper surface of the bottom mold frame 9 is closed.

  With the pressing bolt 58 retracted appropriately, the wedge 54 is removed, the rotating arm 49 is set in a vertically long state or a horizontally long state, and the wedge 54 is changed over to bring the rotating arm 49 into the bolt pressing position or the retracted position. Can be held.

  As shown in FIG. 4, end molds 67 are arranged on the bottom mold 9 at the end parts in the front-rear direction of the left and right side molds 13. The supporting device 68 is supported in a predetermined posture.

  The base end portion of the scaffolding plate support frame 69 is detachably attached to the bracket on the support column 5 side by bolts and nuts so as to protrude inward at the opposing inner upper end portion of each support column 5 fixed to the base frame 2. The scaffolding plate 70 is constructed over the scaffolding plate support frames 69 adjacent to each other in the front-rear direction to form an upper scaffolding 71. In addition, a scaffold plate 70 is installed between the end portions of the base frames 2 adjacent in the front-rear direction to form a lower outer scaffold 72.

  Next, for example, a case where a monorail track girder 74 having a side surface form as shown in FIG. 10 is manufactured using the curve girder working form apparatus 1 will be described. In the monorail track girder 74, as a characteristic of the curved girder as shown in FIG. 12 (a), the plane form (plane alignment) is a curve, and as shown in FIG. 12 (c), the transverse gradient is increased along with the plane alignment curve. It has an upper surface 83 which is provided and is inclined at a certain inclination angle (an upper surface having a height difference [cantage amount] between both ends in the width direction of the girder). Is a right angle and the bottom face of the beam is always horizontal. The monorail track girder 74 may be provided with a longitudinal gradient.

  The upper surface of the bottom mold 9 is a flat surface. The handle member 29 of the manual winch 46 is driven on the upper surface of the bottom mold 9 to place each side mold 13 at a predetermined position. While confirming at 36, fine adjustment is performed by the screw-type jack 21, and the rotary tool engaging portion 25 of each screw-type jack 21 in the front-rear direction of each side mold 13 is rotated forward or reverse by the rotary tool. It is set so that the inclination angle in the vertical direction of each mold surface plate 17 becomes a predetermined angle by rotating and pushing or pulling the mold surface plate 17 in the side mold 13. In the above case, the fall preventive member 40 prevents the side mold 13 from falling, and the manual winch 46 attached to the support 5 attached to the fall preventing member 40 is driven to turn the fall preventing member 40. And the side part formwork 13 can be moved to the rough position of the left-right direction.

  In the above-described case, the screw-type jack 21 is slidably supported by the insertion hole of the receiving metal object 30 or the movable metal receiving object 32 at the end side of the male screw member 26 so that the screw-type jack 21 is driven. Then, the support frame 14 is pushed or pulled to push or pull the formwork face plate 17, and the plate-like stopper member 35 is disposed between the inner support vertical plate 33 and the outer support vertical plate 34 in a state of being arranged at a predetermined position. The mold surface plate 17 in each side mold 13 is held in a predetermined plane curve and a predetermined vertical inclination angle by being fitted between and fitted to the locking groove 28, and further in the front-rear direction. An end mold 67 is disposed at the end in the direction, and illustration is omitted, but the PC steel material is disposed between the end molds 67 or between the side molds 13 while being appropriately arranged in the mold. .

  Since the screw-type jack 21 can be horizontally rotated by the vertical axis 23 on the support frame 14 side, even if the support frame 14 is deformed and arranged in a planar curved arrangement, it can follow this. Further, since the vertical inclination angle of the support frame 14 is very small, the vertical arrangement of the screw jack 21 can be absorbed by the play of the attachment portion such as the vertical axis 23.

  Even in the above case, in order to obtain a smooth plane curve, it is possible to confirm whether a predetermined curve is obtained with the rod-shaped gauge 36 arranged on each screw type jack 21, so that an accurate plane curve curve girder is produced. can do. As the steel plate constituting the mold face plate 17, for example, those having a size of about 12 mm and 9 mm are used. Note that the gauge is initially adjusted to 0, and the curve is adjusted using that as a guide.

  Instead of the roller 15 at the lower end of the support frame 14 in the above case, a linear type moving device has a small friction with the slide surface, so that the manual winch 46 can be omitted.

  Further, a rubber face plate 59 is disposed between the lower end surface of the mold surface plate 17 and the bottom mold frame 17 and is pressed by the pressing bolt joint 58, and the bridge support is provided on the end side in the front-rear direction of the bottom mold frame 9. In a state where the support 84 as a device is arranged and the anchor bolts are arranged so as to be embedded and fixed in the concrete, the concrete 73 is filled with the concrete 73 so that the concrete upper surface becomes an inclined surface so as to provide a cant. The surface is finished with a trowel and cured.

  In the above-described case, a gap is required on the side of the fall prevention member 40 in accordance with the fall of the side mold 13 due to the transverse gradient of the fall prevention member 40. The gap is set when the screw jack 21 is set. The upper and lower support rollers 42 and 43 of the support column 5 may be removed, or a clearance may be provided at the joint between the support frame 14 and the fall prevention member 40 so as to be movable.

 After the concrete exhibits a predetermined strength, the plate-like stopper member 35 is removed and the wedge 54 is removed so that the screw-type jack 21 can be retracted, and the rotary arm 49 is moved in the state shown in FIG. In a state where the rotary arm 49 is held by being press-fitted into the hole 52, the rubber face plate 59 is removed, and the manual winch 46 or the screw jack 21 is appropriately rotated to remove the side mold 13 from the mold. In this case, the roller 15 at the lower end of the support frame 14 moves on the bottom mold 9, but when the bottom mold 9 disappears, the roller 15 on the side frame removing frame 11 supporting the bottom mold 9 is moved. Move backwards. Note that the end mold 67 is appropriately retracted and removed.

  When the mold is removed, after the screw-type jack 21 is opened, the fall prevention member 40 may be supported and moved backward while the rollers 42 and 43 of the fall prevention member 40 are in effect. Alternatively, although not shown, the support frame 14 and the fall prevention member 40 are firmly joined by a suitable means such as a clamp fitting, and then moved backward in the direction of the column 5.

  As in the above-described embodiment, the curved girder working formwork apparatus of the present invention is not installed deeply in the foundation structure provided on the ground or the like, unlike the conventional formwork, and the pillars are attached to the base frame with bolts. Since it is a detachable mounting structure, it becomes easy to disassemble and assemble the curved girder working formwork device, and the components constituting these can be easily transported and installed near the construction site, and after use It can be easily disassembled and removed, and the manufactured precast girder can be lifted and installed as it is. When producing a large number of precast girders, the production cost and transportation cost of the precast girder are markedly increased. The effect which can be made cheap is acquired.

  Since the curved girder working form 1 of the present invention can be attached and detached with bolts, nuts, etc., it can be easily assembled on the ground or a solid foundation by transporting the members to the site where the construction work is carried out, and disassembled and removed. Therefore, when a large number of curved girders are manufactured, it can be manufactured at a very low cost and can be easily installed with a small transport distance.

  In the above-described embodiment, the case of manufacturing a monorail track girder has been described. However, a track having a curve in a new traffic system such as a linear type, an LRT type, or an AGT type by the curved girder production form device of the present invention. A digit such as a digit may be produced.

It is a partially longitudinal front view which shows the curve girder action type | mold form apparatus of this invention. It is a longitudinal front view which expands and shows a part of FIG. It is a cross-sectional top view which shows a part of curve girder production type | mold form apparatus of this invention. It is a schematic plan view of the curve girder working form apparatus of the present invention. It is a vertical front view which shows the part which is eccentric in the curved part. It is a vertical front view which shows the state which has removed the side part formwork in the curve girder action type | mold formwork apparatus of this invention. It is a vertical front view which shows the corner | edge part obstruction | occlusion part of a bottom part formwork and a side wall formwork. FIG. 8 is a side view of FIG. 7. (A) is a top view which shows the state which has fixed the rotation arm with the wedge, (b) is a vertical side view which shows the state which has rotated and retracted the rotation arm back. It is a schematic side view which shows the girder manufactured by the curve girder production type | mold apparatus of this invention. FIG. 2 is a comparison view of a conventional girder formwork device and a curved girder working formwork device of the present invention, (a) is a schematic longitudinal front view showing a part of the conventional formwork device, and (b) is a diagram of the present invention. It is a general | schematic longitudinal cross-section front view which shows a part of curve girder production type | mold formwork apparatus. (A) is a schematic plan view showing a curved girder and a bottom mold, (b) is a longitudinal front view showing a normal girder cross section, and (b) is a longitudinal front view showing a curved girder having a cant. 1 shows a pair of front and rear plate stopper members, (a) is a side view of one plate-like stopper member, (b) is a front view of the pair of front and rear plate stopper members, and (c) is the other plate. It is a side view of a cylindrical stopper member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Curved girder production type | mold frame apparatus 2 Base frame 3 Lower flange 4 Upper flange 5 Support | pillar 5a Groove-shaped steel 6 Bolt and nut 7 Bottom frame vertical beam 8 Bottom frame mount 9 Bottom mold 10 Split type bottom mold unit 11 Side frame De-beam receiving beam 12 Bracket 13 Side mold 14 Support frame 15 Roller 16 Crosspiece 17 Mold face plate 18 Convex mold 19 Vertical axis 20 Bracket 21 Screw jack 22 Case 23 Vertical axis 24 Annular stopper 25 times Moving tool engaging portion 26 Male screw member 27 Male screw portion 28 Locking groove portion 29 Handle 30 Receiving object 31 Frame bracket 32 Movable receiving object 33 Inner support vertical plate 34 Outer support vertical plate 35 Plate-like stopper member 36 Rod-shaped gauge 37 S-type attitude support Member 38 Bracket 39 Horizontal bracket 40 Side formwork overturn prevention member 41 Vertical portion 42 Upper support roller 43 Lower support roller 44 Vertical connection member 5. Strip or cable body 46 Manual winch 47 Drum 48 Rotating arm support vertical plate 49 Rotating arm 50 Horizontal shaft 51 Wedge insertion hole 52 Wedge insertion hole 53 Wedge insertion hole 54 Wedge 55 Bearing member 56 Female screw member 57 Lock nut 58 pressing bolt 59 rubber face wood 60 concrete foundation 61 independent column 62 hanging beam 63 side mold 64 side mold plate 65 curved girder 66 solid foundation 67 end mold 68 support device 69 scaffolding plate support frame 70 scaffolding Plate 71 Upper scaffold 72 Lower outer scaffold 73 Concrete 74 Monorail track girder 75 Recess 76 Connection bolt 77 Bracket 78 Horizontal slit 79 Bracket 80 Nut 81 Bolt insertion hole 82 Vertical axis 83 Upper surface 84 Bearing G Gap

Claims (4)

  In the curved girder working form apparatus for producing a curved curved girder, a roller type or linear type movement is provided below the support frame that supports the side form frame in the curved girder working form apparatus. An apparatus is provided so that the support frame can be moved, and one end side of a fall prevention member for preventing the fall is connected to the support frame, and the fall prevention member is disposed on a column side provided on the base frame. Curved girder working formwork device characterized in that it is supported.   2. The curved girder working form apparatus according to claim 1, wherein the fall prevention member is supported so as to be movable forward or backward with respect to the support column side.   The curved girder working form apparatus according to claim 1 or 2, wherein the overturn preventing member is supported so as to be movable in accordance with a tilt angle in which the side part form is inclined in the vertical direction due to a transverse gradient.   The base frame of the curved girder working type frame device is placed on the ground or a solid foundation with a space in the front-rear direction, and a support column is detachably installed on the base frame. The curved girder production form device according to any one of 1 to 3.

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