JP7361576B2 - Formwork system and method for constructing concrete structures using this formwork system - Google Patents

Description

The present invention relates to a formwork system and a method of constructing a concrete structure using this formwork system.

Patent Document 1 discloses a method of constructing a slope shoulder in a stepped manner using formwork. In the formwork described in Patent Document 1, a plurality of frame bodies each having a rectangular cross section are connected in a stepped manner, and the hollow interior of the frame bodies is filled with water for weight adjustment. In the construction method described in Patent Document 1, when moving the formwork upward, water inside the frame is drained from the drain port, thereby reducing the overall weight and making it easier to move.

Japanese Patent Application Publication No. 2007-297817

In the construction method described in Patent Document 1, it is necessary to inject water into multiple formworks before placing concrete material, and also to inject water from within the formworks before moving the formworks upward. need to be discharged. In order to improve work efficiency in the method described in Patent Document 1, it is possible to reduce the amount of water injected into the formwork. However, if the amount of water injected into the formwork is reduced, the weight of the formwork will be reduced, and there is a risk that the position of the formwork will shift due to the load exerted on the formwork by the concrete material during pouring.

An object of the present invention is to suppress the displacement of formwork and to improve the efficiency of work in constructing concrete structures.

The present invention relates to a formwork system, which includes a formwork installed when pouring concrete material, a support mechanism that supports the formwork against the load exerted on the formwork by the concrete material during pouring , and a formwork. a formwork supporting device having a moving mechanism for moving along the frame , the supporting mechanism having a side support part that abuts a side surface of the formwork, and the moving mechanism having a guide on the formwork. A running surface on which the moving mechanism runs is provided. The present invention also relates to a formwork system, which includes a formwork that is installed when pouring concrete material, and a support mechanism that supports the formwork against the load that the concrete material exerts on the formwork during pouring. and a moving mechanism for moving along the formwork, the formwork having a pressed part extending along the installation surface on which the formwork is installed. The support mechanism has a pressing part that presses the pressed part toward the installation surface, and the formwork is provided with a part on which the moving mechanism is guided or a running surface on which the moving mechanism runs. .

The present invention also provides a method for constructing a concrete structure using a formwork system, the formwork support device moving the formwork support device to a predetermined position of the formwork installed for pouring concrete material. The method includes a moving step, a supporting step of supporting the formwork by a support mechanism of a formwork support device, and a concrete pouring step of pouring concrete material while the formwork is supported by the support mechanism.

Advantageous Effects of Invention According to the present invention, it is possible to suppress displacement of formwork and improve the efficiency of work for constructing a concrete structure.

It is a longitudinal cross-sectional view of a dam. It is a front view of the dam seen from the upstream side. It is a side view of a formwork support device. FIG. 4 is a cross-sectional view of the formwork support device taken along line IV-IV in FIG. 3; FIG. 4 is a sectional view of the formwork support device taken along line VV in FIG. 3; FIG. 4 is a sectional view of the formwork support device taken along line VI-VI in FIG. 3; 7 is a cross-sectional view of the formwork support device taken along the line VII-VII in FIG. 6. FIG. It is a flowchart which shows an example of the procedure of a dam construction method.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to drawings, the formwork system 110 based on embodiment of this invention and the construction method of the concrete structure using this formwork system 110 are demonstrated. In this embodiment, a case where the concrete structure is a dam 101 will be described.

First, the dam 101 will be explained with reference to FIGS. 1 and 2. FIG. 1 is a longitudinal cross-sectional view (upstream/downstream direction cross-sectional view) of the dam 101, and FIG. 2 is a front view of the dam 101 viewed from the upstream side (a view of the dam 101 viewed from the left side in FIG. 1).

As shown in FIG. 1, the dam 101 is a trapezoidal dam with a trapezoidal cross section in the upstream and downstream directions. As shown in FIG. 2, the left and right sides of the dam 101 are attached to rock masses 102 and 103, respectively. For convenience of explanation, the left-right direction shown in FIG. 1, that is, the direction in which the river flows, is referred to as the upstream and downstream direction of the dam 101, and the left-right direction shown in FIG. 2, that is, the direction of the river width, is referred to as the width direction of the dam 101.

The dam 101 according to the present embodiment is constructed by covering the surface of a trapezoid-shaped CSG (dam body part) with protective concrete (protection part) using the CSG (Cemented Sand and Gravel) construction method. Note that the materials used for the dam body and the protection part that constitute the dam 101 as a concrete structure are collectively referred to as concrete materials. CSG material, which is the material for the dam body, is manufactured by mixing locally generated materials collected near the dam site with water and cement.

The dam 101 is constructed by stacking concrete layers (CSG layer and protective concrete layer) from bottom to top by pouring concrete material. The height h of one concrete layer is approximately 75 cm to 100 cm.

1 and 2, a dam 101 consisting of six concrete layers is simply shown. The upper layer of the concrete layer is formed to have a shorter length in the upstream and downstream directions. Stair-like steps are formed on the upstream and downstream sides of the dam 101. The first layer 1 has a wall part 1a formed at the end and a flat part 1b formed on the top surface, and the second layer 2 has a wall part 2a formed at the end and a flat part 1b formed on the top surface. A flat portion 2b is formed. A first step portion 9a is formed by the flat portion 1b of the first layer 1 and the wall portion 2a of the second layer 2, and a second step portion 9a is formed by the flat portion 2b of the second layer 2 and the wall portion 3a of the third layer 3. A step part 9b is formed. Similarly, third to fifth step portions 9c, 9d, and 9e are formed on the upstream and downstream side surfaces of the dam 101.

The dam (concrete structure) 101 in which the stepped portions 9a to 9e are formed on the upstream and downstream sides is constructed by a construction system that includes a formwork system 110 and a lifting device (not shown). .

The formwork system 110 includes a plurality of formworks 10 used when pouring concrete material, and a formwork support device that supports the formwork 10 against the load exerted on the formwork 10 by the concrete material during pouring. 100, and the lifting device is a device used to install the formwork 10 in a predetermined position.

Next, with reference to FIGS. 3 to 5, the formwork system 110 according to the embodiment of the present invention will be specifically described. FIG. 3 is a side view of the formwork support device 100, showing a state in which the formwork support device 100 is installed on a step formed on the side surface of the dam 101. 4 is a sectional view showing a cross section of the formwork support device 100 taken along the line IV-IV in FIG. 3, and FIG. 5 is a cross-sectional view showing a cross section of the formwork support device 100 taken along the line VV in FIG. It is a diagram. Note that in FIGS. 4 and 5, illustrations of parts other than the formwork support device 100 are omitted.

As shown in FIG. 3, the formwork 10 supported by the formwork support device 100 is spanned between a pair of vertical plates 10a, 10b extending in parallel to each other in the vertical direction, and a pair of vertical plates 10a, 10b. It is a steel material consisting of a pair of horizontal plates 10c and 10d that extend in parallel to each other in the horizontal direction. The formwork 10 is formed, for example, by stacking a pair of H-beams vertically and fastening or welding them.

Further, the formwork 10 is provided with a pressed portion 11 that is pressed by a jack 51 of a support mechanism 50, which will be described later. The pressed part 11 extends from the lower end of the vertical plate 10a, which is located on the opposite side of the vertical plate 10b with which the concrete material comes into contact when pouring the concrete material, to the installation surface on which the formwork 10 is installed (Fig. 3 This is a plate-shaped portion that is formed to extend in the upstream and downstream directions along the planes of the flat portions 1b, 2b, and 3b in the direction opposite to the central portion of the dam 101.

Specifically, the pressed portion 11 is formed by welding and fixing an L-shaped steel to the lower end of the vertical plate 10a. The pressed portion 11 may be formed by welding and fixing a plate-like member to the lower end of the vertical plate 10a, or may be formed by bending the vertical plate 10a. In addition, the pressed part 11 has a surface in contact with the concrete material near the lower end of the vertical plate 10b with which the concrete material comes into contact during pouring, that is, a surface of the vertical plate 10b on the center side of the dam 101. can be said to be the part that juts out toward the opposite side. The pressed portion 11 is pressed against the installation surface of the formwork 10 by a jack 51, which will be described later.

As shown in FIG. 3, the formwork support device 100 that supports the formwork 10 having the above-mentioned configuration utilizes the step-like steps 9a to 9e when constructing the dam 101, and lifts the top layer using a lifting device. The formwork 10 installed on the upper surface is supported. Note that the formwork support device 100 may be one that uses a step-like step, for example, one that uses a step-like step formed on the side surface of a concrete structure, or one that uses a step-like step formed on the side surface of a concrete structure. It may also be possible to use a formwork installed on the sloping side of the object.

As shown in FIGS. 3 to 5, the formwork support device 100 includes a frame 20 made of steel, and a traveling device (moving mechanism) that is attached to the frame 20 and moves the formwork support device 100 along the formwork 10. 30, a weight container 40 that is attached to the frame 20 and can be filled with weight material, and a support mechanism 50 that is attached to the frame 20 and supports the formwork 10 against the load that the concrete material exerts on the formwork 10 during pouring. , has.

The frame 20 includes first spar members 21 provided along the formwork 10, and is arranged parallel to the first spar members 21 and is closer to the center of the dam 101 than the first spar members 21 in the upstream and downstream directions (in FIG. A second girder member 22 disposed on the right side of It has a pair of frame members 23 (23a, 23b).

The traveling device 30 includes a first traveling device 31 that is attached to a joint between the first girder 21 and the frame member 23 via a pair of support columns 24 (24a, 24b) that are vertically arranged and parallel to each other; and a second traveling device 32 attached to the two-digit member 22. The first traveling device 31 and the second traveling device 32 are arranged at a predetermined interval in an upstream and downstream direction intersecting the width direction of the dam 101, which is the longitudinal direction of the formwork 10, for example, as shown in FIG. They are set apart from each other. Therefore, the formwork support device 100 is stable against overturning in the upstream and downstream directions. In addition, stable movement (running) is possible against falls and the like.

The first traveling device 31 includes a traveling frame 34 provided along the formwork 10, a pair of wheels 35 (35a, 35b) rotatably supported by the traveling frame 34, and an electric motor 36 that drives the wheels 35a. , and a connecting member 38 that connects the lower end portions of the pair of support columns 24 and the traveling frame 34.

Similarly, the second traveling device 32 includes a traveling frame 34 provided along the formwork 10, a pair of wheels 35 (35a, 35b) rotatably supported by the traveling frame 34, and an electric motor driving the wheels 35a. It has a motor 36 and a connecting member 38 that connects the second beam member 22 and the traveling frame 34.

As shown in FIG. 3, the wheels 35 of the second traveling device 32 are arranged in a recess 10e that is formed to open upward by the vertical plates 10a, 10b and the horizontal plate 10c of the formwork 10. Therefore, the second traveling device 32 is guided by the pair of vertical plates 10a and 10b and travels on the horizontal plate 10c. That is, the bottom surface of the recess 10e provided in the formwork 10, that is, the top surface of the horizontal plate 10c, becomes the running surface of the second traveling device 32. That is, the structure is such that the weight of the formwork support device 100 is applied to the formwork 10 via the traveling device 32.

On the other hand, the first traveling device 31 uses a flat surface where the formwork 10 is removed from the ground surface or a concrete layer as a traveling surface. In this way, the second traveling device 32 travels on the formwork 10 placed on the uppermost layer of the plurality of layers of the dam (concrete structure) 101 having a laminated structure, and the first traveling device 31 runs on the second traveling device 32. It travels on a layer below the traveling device 32. Note that, like the second traveling device 32, the first traveling device 31 may use the upper surface of the horizontal plate 10c of the formwork 10 as a traveling surface.

The formwork support device 100 moves along the formwork 10 by rotating the electric motors 36 of the respective traveling devices 31 and 32 in synchronization and rotating the wheels 35a of the respective traveling devices 31 and 32. Therefore, when pouring concrete material, it is possible to move along a plurality of formworks 10 that are installed in series, and it is also possible to support each of the plurality of formworks 10 that are installed in a series. be.

The weight container 40 is a tank capable of storing water as a weight material, and has a water inlet (not shown) at the top and a drain port (not shown) at the bottom. The weight container 40 is fixed onto the second beam member 22 by a fixture (not shown).

The weight of the weight material in the weight container 40 acts on the formwork 10 via the second traveling device 32, and applies a vertically downward load to the formwork 10. Note that the weight material is not limited to water, and may be any material as long as it can be easily injected and discharged, and may be a liquid other than water or a granular material.

Next, the support mechanism 50 of the formwork support device 100 will be described with reference to FIGS. 3, 6, and 7. FIG. 6 is a cross-sectional view of the formwork support device 100 taken along line VI-VI in FIG. 3, mainly showing a portion where the support mechanism 50 is provided, and omitting other portions. . FIG. 7 is a sectional view showing a cross section of the support mechanism 50 taken along line VII-VII in FIG.

The support mechanism 50 includes a jack (pressing section) 51 that is vertically expandable and retractable, and a support roller (side support section) 61 that comes into contact with the side surface of the formwork 10 .

The jack 51 is a hydraulic jack that has a cylinder part 52 and a rod part 53 that is provided so as to be able to move forward and backward with respect to the cylinder part 52. It is assembled to a pair of support struts 26a, 26b extending downward from the third girder 25, which is spanned between the members 23 (23a, 23b). Note that the number of jacks 51 is not limited to two, and may be singular or three or more.

The jack 51 is attached to the frame 20 by fixing the ends of a bracket 55 coupled to the outer peripheral surface of the cylinder portion 52 to the support struts 26a and 26b via bolts (not shown). When the jack 51 is attached to the frame 20, the rod portion 53 is in a position that can extend downward.

A plurality of support rollers 61 are arranged at equal intervals along the formwork 10, and a plurality of support rollers 61 are arranged at intervals in the vertical direction. For example, as shown in FIGS. 3 and 6, the support rollers 61 are provided at six locations, three locations along the formwork 10 and two locations in the vertical direction. These support rollers 61 are connected to a fourth beam member 27 that is bridged between the tips of the pair of support columns 26a and 26b, and a pair of support columns 26a and 26b that are spaced apart from the fourth beam member 27 by a predetermined distance. It is assembled to the fifth girder member 28 that spans between the two. From the viewpoint of preventing the formwork 10 from tilting, the vertical distance between the fourth girder material 27 and the fifth girder material 28 is approximately the same as or greater than the distance between the pair of horizontal plates 10c and 10d of the formwork 10. It is preferable to make it large. Note that the arrangement and number of the support rollers 61 described above are merely examples, and for example, they may be provided at 12 locations in total, including 4 locations along the formwork 10 and 3 locations in the vertical direction.

As shown in FIG. 7, the support roller 61 includes an annular roller portion 62 made of resin such as urethane, a roller support portion 64 that rotatably supports the roller portion 62 via a shaft 63, and a roller support portion 64 that rotatably supports the roller portion 62 via a shaft 63. It has a rod part 66 provided with a roller support part 64, and a cylinder part 67 that slidably accommodates the rod part 66.

The support roller 61 is attached to the frame 20 by fixing the base end 67a of the cylinder portion 67 to the fourth beam member 27 via a bolt (not shown). When the support roller 61 is attached to the frame 20, the rotation direction of the roller portion 62 is aligned with the longitudinal direction of the formwork 10, that is, the axial direction of the shaft 63 that rotationally supports the roller portion 62 is approximately vertical. It is designed to be the direction.

A spring 68 is provided inside the cylinder portion 67 to bias the rod portion 66 toward the roller portion 62. A retaining member 69 is provided to be inserted into a long hole 66a formed along the length. Therefore, the support roller 61 can expand and contract within the range of the length in the axial direction of the elongated hole 66a according to the pressing force acting on the roller portion 62.

The lifting device that installs the formwork 10 having the above configuration at a predetermined position includes, for example, a frame that is movable along the formwork 10 by a running section, and a hoist that is attached to the frame and movable along the upstream and downstream directions. This device is capable of lifting the formwork 10 used in forming the lower concrete layer using a hoisting device and transferring it to a predetermined position on the upper surface of the uppermost layer. As described above, it is preferable that the lifting device has a configuration that utilizes the step-like steps 9a to 9e when constructing the dam 101, similar to the formwork support device 100, but the lifting device is not limited to such a configuration, but any type of formwork can be used as long as the formwork 10 used in forming the lower concrete layer can be moved to a predetermined position on the upper surface of the uppermost layer. For example, it may be a crane installed on level ground.

Next, with reference to FIG. 8, a method for constructing the dam (concrete structure) 101 using the construction system including the above-described formwork system 110 and lifting device will be described. FIG. 8 is a flowchart showing an example of a procedure of a method for constructing the dam 101.

The method for constructing the dam 101 mainly includes a formwork installation step S110, a formwork support device relocation step S120, a formwork support device movement step S130, a formwork support step S140, and a concrete pouring step S150. . Note that the formwork installation step S110, the formwork support device relocation step S120, the formwork support device movement step S130, and the formwork support step S140 are performed almost simultaneously on both the upstream and downstream side surfaces of the dam 101.

<Formwork installation process>
In the formwork installation step S110, in order to construct a new concrete layer on the top surface of the top layer (third layer 3 in FIG. 3), a lifting device is used, for example, when forming the lower concrete layer. The formed formwork 10 is moved to the uppermost layer, and a plurality of formworks 10 are successively installed along the width direction of the dam 101 on the upper surface of the uppermost layer. In addition, if it is necessary to relocate the lifting device when installing the formwork 10 on the upper surface of the top layer, the entire lifting device is moved to the upper layer in advance using a crane (not shown). .

<Formwork support device relocation process>
In the formwork support device relocation step S120, the wheels 35 of the second traveling device 32 of the formwork support device 100 are arranged in the recess 10e of the formwork 10 installed on the uppermost layer in the formwork installation step S110. , the formwork support device 100 is relocated. The relocation of the formwork support device 100 is performed by lifting the entire formwork support device 100 using a crane (not shown). In this case, the formwork support device 100 is relocated in a state where water (weight material) is discharged from the weight container 40 of the formwork support device 100 to reduce the weight of the formwork support device 100 in order to reduce the load on the crane. It will be held in

<Formwork support device movement process>
In the subsequent formwork support device moving step S130, the traveling device 30 of the formwork support device 100 is driven to move the formwork support device 100 to a predetermined position of the formwork 10 installed on the upper surface of the uppermost layer. In this embodiment, since the formwork support device 100 is provided with the traveling device 30, it is possible to move the formwork support device 100 to a predetermined position on the formwork 10 quickly and accurately. The predetermined position here refers to a position where the jack 51 of the formwork support device 100 faces the pressed part 11 provided on the formwork 10, as shown in FIG. This is a position where the rod portion 53 can press the pressed portion 11 when the rod portion 51 is expanded. Further, the pressure exerted by the concrete material on the formwork 10 generally increases at locations where the concrete material is fluidized and compacted by application of vibration or the like. In order to prevent the formwork 10 from shifting at such locations, the formwork support device 100 is sequentially moved to the formwork 10 placed opposite the location where the concrete material is being compacted. Become.

Note that when the formwork support device 100 is moved along the formwork 10, the roller portion 62 of the support roller 61 is in a state in which it is almost in contact with the vertical plate 10a of the formwork 10. However, since the roller part 62 is supported so as to rotate along the longitudinal direction of the formwork 10, the roller part 62 in contact with the vertical plate 10a will rotate as the formwork support device 100 moves. Become. Therefore, even if the support rollers 61 protruding toward the formwork 10 are provided, the formwork support device 100 can be smoothly moved along the formwork 10. Note that the range in which the formwork support device 100 supports the formwork 10 is small compared to the range of a plurality of formworks 10 that are installed in series when pouring concrete material.

<Formwork support process>
When the movement of the formwork support device 100 is completed in the formwork support device moving step S130, the formwork 10 is supported by the formwork support device 100 in the subsequent formwork support step S140.

In the formwork support step S140, the plurality of support rollers 61 of the formwork support device 100 are brought into contact with the side surfaces of the formwork 10. Specifically, the roller portion 62 of the support roller 61 is pressed against the vertical plate 10a of the formwork 10 by the urging force of the spring 68. In addition, since the support roller 61 can be expanded and contracted to some extent, it is possible to keep the roller part 62 in contact with the formwork 10 even if the position of the formwork 10 is slightly shifted.

Further, in the formwork support step S140, the jack 51 is extended, and the pressed part 11 of the formwork 10 is pressed toward the installation surface (flat part 3b in FIG. 3) by the rod part 53 of the jack 51. .

In the formwork support step S140, water (weight material) is injected into the weight container 40 of the formwork support device 100 as needed to increase the weight of the formwork support device 100.

<Concrete placement process>
In the concrete pouring step S150, concrete material is poured into the pouring area surrounded by the formwork 10 and the like, with the formwork 10 supported by the jack 51 and support rollers 61 of the formwork support device 100 as described above. The pouring work is carried out.

Specifically, concrete material is poured into a casting area defined by the formwork 10 and the like, and then compacted by a vibration compaction machine (vibrator, etc.).

Generally, when pouring or compacting concrete material, concrete placement pressure is generated. This concrete placing pressure acts on the formwork 10 through the concrete material as a load that moves the formwork 10 along the upstream and downstream directions and a load that makes the formwork 10 tilt. There is a risk that it may become misaligned.

On the other hand, in this embodiment, since the support roller 61 is in contact with the side surface of the formwork 10 as described above, even if a load acts on the formwork 10 through the concrete material during pouring, the formwork 10 is prevented from moving along the upstream and downstream directions. In particular, since the support rollers 61 are provided apart from each other in the vertical direction, it is possible to prevent the formwork 10 from tilting about the portion that the support rollers 61 contact as a fulcrum.

Note that even if the support roller 61 is pressed through the formwork 10, the contraction of the support roller 61 is caused by the elongated hole 66a formed in the rod portion 66 and the retaining member 69 inserted into the elongated hole 66a. regulated by. Therefore, by supporting the side surfaces of the formwork 10 with the support rollers 61, it is possible to prevent the formwork 10 from shifting due to the load received from the concrete material during pouring.

In addition, in this embodiment, since the pressed portion 11 of the formwork 10 is pressed toward the installation surface by the jack 51 as described above, the frictional force between the formwork 10 and the installation surface is increased. . By increasing the frictional force between the formwork 10 and the installation surface in this way, the load received from the concrete material during pouring causes the formwork 10 to move along the installation surface on the opposite side from the surface in contact with the concrete material. As a result, it is possible to prevent the formwork 10 from shifting in position.

Furthermore, in this embodiment, by injecting water (weight material) into the weight container 40, it is also possible to apply a vertically downward load to the formwork 10 from the formwork support device 100. This further increases the frictional force between the formwork 10 and the installation surface, and can reliably prevent the formwork 10 from moving along the installation surface due to the load received from the concrete material during pouring.

In this way, in the concrete placing step S150, a new concrete layer can be formed on the upper surface of the uppermost layer while preventing the formwork 10 from shifting its position.

Note that in the top layer, the pouring area is divided in the width direction, so when the concrete pouring step S150 is completed for a predetermined pouring area, the next concrete pouring area is The formwork support device 100 is moved toward the pouring area (formwork support device movement step S130), the formwork 10 is supported by the formwork support device 100 (formwork support step S140), and in this state, the adjacent molding Concrete material is placed in the construction area (concrete placement step S150). Therefore, it is not necessary to install the formwork support device 100 that supports the formworks 10 over the entire area where the plurality of formworks 10 are installed in series.

As shown in FIG. 8, until the concrete material is poured into all of the plurality of pouring areas of the uppermost layer and the construction of a new layer is completed, the concrete pouring step starts from the formwork support device moving step S130. The steps up to S150 will be repeated. When the work of placing concrete material in all of the plurality of placing areas of the uppermost layer is completed and a new layer is formed, the formwork installation step S110 is carried out again to form a new layer. Return to.

As described above, a plurality of formworks 10 are installed on the upper surface of the uppermost layer, the formwork support device 100 is placed on the formwork 10, and concrete material is poured while the formwork 10 is supported by the formwork support device 100. By repeating a series of pouring steps (S110 to S150), a dam 101 with a laminated structure having a plurality of concrete layers is constructed, and steps above the stairs are formed on the upstream and downstream sides of the dam 101. It is formed.

In addition, the process of constructing the dam 101 is not limited to the above-mentioned process. For example, before the concrete pouring step S150, a joint board (not shown) is installed to form a pouring area surrounded by the formwork 10 and the like. A step of extending it upward may be provided. Joint plates are plate-shaped members such as iron plates that are installed to alleviate internal stress caused by expansion and contraction of concrete materials and prevent cracks from occurring, and are installed at predetermined intervals in the width direction of the dam 101. , for example, every 15 m. The joint plate is extended upward by joining the lower end of a new joint plate to the upper end of the joint plate exposed from the top layer by welding or the like.

Further, before the concrete placing step S150, a step may be provided to form a raised portion by spreading CSG material as a raised material on the upper surface of the uppermost layer and compacting it using a rolling roller or the like.

According to the embodiment described above, the following effects are achieved.

In the formwork system 110 described above, the formwork 10 used when pouring concrete material is supported by the support mechanism 50 of the formwork support device 100 to counteract the load that the concrete material exerts on the formwork 10 during pouring. It is supported by In this manner, in this embodiment, the support mechanism 50 of the formwork support device 100 can reliably prevent the formwork 10 from shifting or tilting during pouring.

Furthermore, in this embodiment, since the support mechanism 50 of the formwork support device 100 prevents the formwork 10 from shifting its position or tilting, a downward load is applied to the formwork 10. It becomes possible to reduce the weight of water (weight material) in the weight container 40 provided for applying the weight.

Therefore, the amount of water discharged from the weight container 40 before relocating the formwork support device 100 and the amount of water injected into the weight container 40 after relocating the formwork support device 100 are reduced. By shortening the time required for discharge and injection, work efficiency when relocating the formwork support device 100 can be improved.

As described above, according to the present embodiment, it is possible to suppress the positional shift of the formwork 10, and it is also possible to suppress the man-hours associated with the work of putting in and taking out water (weight material). It is possible to improve the efficiency of the work of constructing the object) 101.

Furthermore, in the formwork system 110, the formwork 10 used when forming the lower concrete layer is moved to the upper surface of the uppermost layer and reused to form a new concrete layer. By reusing the formwork 10 in this way, the construction cost of the dam (concrete structure) 101 can be reduced. In addition, since the formwork 10 remains on the lower concrete layer until it is moved to the upper surface of the uppermost layer, for example, the formwork 10 used when forming the concrete layer 4 to 5 layers below the uppermost layer By moving the concrete layer 10 to the upper surface of the uppermost layer, a sufficient curing period can be ensured for the concrete layer 1 to 3 layers below the uppermost layer.

The following modified examples are also within the scope of the present invention, and it is also possible to combine the configuration shown in the modified example with the configuration described in the above embodiment, or to combine the configurations described in the following different modified examples. It is.

In the above embodiment, an example has been described in which one formwork support device 100 is arranged for one formwork 10 and concrete material is cast. The number of formworks 10 and the corresponding number of formwork support devices 100 are not limited to this, and a plurality of formwork support devices 100 may be arranged for one formwork 10, One formwork support device 100 may be arranged for a plurality of formworks 10.

Furthermore, in the above embodiment, a case has been described in which the formwork system 110 is used to construct the dam 101 formed by the CSG construction method, but concrete structures to which the formwork system 110 can be applied are not limited to CSG dams. The method can be applied to any concrete structure that is made by pouring concrete material using formwork.

Although the embodiments of the present invention have been described above, the above embodiments merely show a part of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments. do not have.

110... Formwork system 10... Formwork 11... Pressed part 100... Formwork support device 20... Frame 30... Traveling device (moving mechanism)
40... Weight container 50... Support mechanism 51... Jack (pressing part, support mechanism)
61...Support roller (side support part, support mechanism)
101...Dam (concrete structure)

Claims (4)

Formwork installed when pouring concrete materials,
A formwork support device having a support mechanism that supports the formwork against the load that the concrete material exerts on the formwork during pouring , and a movement mechanism that moves along the formwork. Prepare,
The support mechanism has a side support part that comes into contact with a side surface of the formwork,
The formwork is provided with a portion on which the moving mechanism is guided or a running surface on which the moving mechanism runs.
formwork system. Formwork installed when pouring concrete materials,
A formwork support device having a support mechanism that supports the formwork against the load that the concrete material exerts on the formwork during pouring , and a movement mechanism that moves along the formwork. Prepare,
The formwork has a pressed portion extending along an installation surface on which the formwork is installed,
The support mechanism includes a pressing portion that presses the pressed portion toward the installation surface,
The formwork is provided with a portion on which the moving mechanism is guided or a running surface on which the moving mechanism runs.
formwork system. The formwork has a pressed portion extending along an installation surface on which the formwork is installed,
The support mechanism includes a pressing portion that presses the pressed portion toward the installation surface.
Formwork system according to claim 1 . A method for constructing a concrete structure using the formwork system according to any one of claims 1 to 3, comprising:
a formwork support device moving step of moving the formwork support device to a predetermined position of the formwork installed for pouring the concrete material;
a supporting step of supporting the formwork by the support mechanism of the formwork support device;
A method for constructing a concrete structure, comprising the step of pouring the concrete material while the formwork is supported by the support mechanism.

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