JP2011032814A - Self-elevation type form device, and replacing method for shuttering panel using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly move a shuttering panel from a shuttering panel deconstruction floor to a shuttering panel installation floor, without affecting quality of concrete and an overall term of work. <P>SOLUTION: This self-elevation type form device 1 is layered with respective layers of the shuttering panel deconstruction floor 2, a support installation floor 3, a modesty panel installation floor 4, and a PC strand winding working floor 5 in this order from a downside, and a concrete skeleton 7 is constructed sequentially from a lower side while elevating the whole. The shuttering panel deconstruction floor 2 serves as a working space for deconstructing a shuttering panel 13, a discharging stage 21 for mounting the deconstructed shuttering panel is extended in the shuttering panel deconstruction floor, and a horizontal floor face position is made to come to an outside of respective outermost edges of the shuttering panel installation floor 4 and the support installation floor 3. The discharging stage 21 is constituted to determine properly an under-skirt length, a width and an installation position, so as to suspend smoothly the shuttering panel 13 mounted on a floor face of the stage 21, without interfering with the shuttering panel installation floor 4 and the support installation floor 3. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a self-elevating formwork apparatus mainly applied to formwork of a steel pipe / concrete composite structure and a refilling method of a dam using the same.

  When building tower-like structures such as piers, in normal reinforced concrete (hereinafter referred to as RC) structures, the higher the height, the more time and effort it takes to arrange the bar and assemble and dismantle the formwork. A steel pipe / concrete composite structure is often adopted instead of the RC structure.

  In constructing such a steel pipe / concrete composite structure, first, a steel pipe is erected in advance, and a formwork apparatus in which a work scaffold and a formwork are integrated from a reaction force stand installed on the top of the steel pipe. Suspend with a suspension wire, and then drive the center hole jack through which the suspension wire is inserted to lift the formwork device by taking the reaction force from the suspension wire, A series of steps of attaching, forming and placing concrete are repeated for each predetermined height unit called a lift, for example, about 1.8 m.

  By doing in this way, while being able to construct | assemble a concrete frame efficiently from the downward direction around the steel pipe erected ahead of time, it also becomes possible to improve the earthquake resistance by the steel pipe.

  In addition, regarding the formwork installation, there is a known jump-up method (jumping method) in which concrete is placed while rearranging upward without sliding the dam, and the concrete is moved while sliding the dam. It is possible to form a better concrete than the slip-form method in which the material is cast.

  Here, the series of steps such as mold installation, pressure support for the placed concrete, curing of the concrete, and formwork disassembly are performed in units of lifts as described above, so the processes that proceed simultaneously with each lift are different from each other. .

  Therefore, the formwork device used when constructing a steel pipe / concrete composite structure is for building a PC strand installation floor for installing a PC strand winding machine so that it can run freely and a weir plate constituting the formwork. A dam plate installation floor that is a work space, a support installation floor that installs a support work that forms a mold together with the dam plate, and a dam plate demolition floor that is a work space for dismantling the dam plate It is a so-called multi-layer structure or multi-stage structure in which are arranged in order from the top.

  By such multi-layering or multi-stage forming apparatus, even if different processes are proceeding simultaneously for each lift, it is possible to efficiently process them without interfering with each other.

Japanese Patent No. 2591422 Japanese Patent No. 2536395 JP 2001-32522 A

  However, in the jump-up method, as described above, the dam plates are rearranged sequentially upwards. However, since the formwork device has a multi-layer structure, the dam plates disassembled on the dam plate demolition floor are replaced with the dam plate installation floor. It took time and effort to move vertically.

  That is, when the tower-like structure has a rectangular cross-section, in the conventional formwork apparatus, avoiding the side position where the center hole jack is installed, the elevator for small transport is provided at the corner position, and the elevator is The dam plate was moved vertically from the dam plate demolition floor to the dam plate installation floor, but because many flat plate dams to be replaced were mainly built in the straight section of the rectangular cross section, they were dismantled Just moving the weir plate horizontally to the corner position takes a lot of time and effort.

  In addition, since the elevator for small transport described above is provided in the self-raising mold apparatus and the installation location is a corner position, the scale must be reduced. Therefore, there is a problem that the weir plate must be disassembled to the minimum unit, and a problem that the elevator for small transportation must be reciprocated many times in order to vertically move a large amount of the disassembled weir plate to the minimum unit. It was happening.

  In addition, if it takes time to move the weir plate, it will be difficult to take time for work such as cleansing and cleaning, so a separate weir plate for one lift must be prepared separately from the amount actually used. There was also a problem of not becoming.

  In order to avoid such problems, a method is adopted in which the weir plate peeled off from the concrete surface on the weir plate dismantling floor is vertically moved to the weir plate installation floor in the shortest distance and built directly on the weir plate installation floor Although it has been done (Patent Document 3), in such a method, the support work arranged on the back surface of the dam plate on the support work installation floor must be temporarily removed so as not to hinder the lifting work. It becomes difficult to ensure the quality of concrete and shorten the construction period.

  The present invention has been made in consideration of the above-described circumstances, and can quickly move the dam plate from the dam plate demolition floor to the dam plate installation floor without affecting the quality of concrete and the overall construction period. It is an object of the present invention to provide a possible self-elevating formwork apparatus and a method for replacing a dam plate using the same.

In order to achieve the above object, the self-elevating formwork apparatus according to the present invention includes a dam plate installation floor which is a work space for installing a dam plate and a lower side of the dam plate installation floor as described in claim 1. A support installation floor on which a support work installed on the back surface of the barrier plate is installed, and a weir plate dismantling floor which is disposed below the support installation floor and is a work space for dismantling the barrier plate; Of the steel pipe and concrete frame constituting the steel pipe / concrete composite structure, and the concrete is raised while taking the reaction force against the tensile material suspended from the reaction force frame installed at the top of the steel pipe In the self-elevating formwork device that can be constructed sequentially from the bottom,
The unloading stage is extended to the dam plate dismantling floor so that at least a part of the horizontal floor surface is located outside the outermost edges of the dam plate installation floor and the support installation floor.

Moreover, the refilling method of the weir plate according to the present invention is as described in claim 2 and is suspended from a reaction force frame installed at the top of the steel pipe among the steel pipe and the concrete frame constituting the steel pipe / concrete composite structure. The concrete frame is constructed sequentially from below while raising the self-elevating formwork device by applying a reaction force to the tensile material formed, and the weir is installed on the dam plate installation floor provided in the self-elevating formwork device In the support installation floor arranged below the dam plate installation floor, a support work is arranged on the back of the dam plate, and in the dam plate dismantling floor arranged below the support installation floor Method of refilling dam plate after dismantling the dam plate and moving the dam plate disassembled on the dam plate demolition floor to the dam plate installation floor, and then building the moved dam plate again on the dam plate installation floor In
The dam plate disassembled on the dam plate demolition floor is extended from the dam plate demolition floor so that at least a part of the horizontal floor surface is outside the outermost edges of the dam plate installation floor and the support installation floor. Move horizontally to the unloading stage installed, lift the horizontally moved weir plate above the level of the weir plate installation floor with a crane, and leave the suspended weir plate in the suspended state After horizontally moving to the horizontal position where the dam plate is installed, the dam plate is suspended and the dam plate is erected on the dam plate installation floor.

  Further, in the method of refilling the dam using the self-raising mold apparatus according to the present invention, when disassembling the dam, the dams are disassembled as a dam plate group while the adjacent dams are connected to each other. A weir plate group is placed on a transport carriage and moved horizontally to the unloading stage.

  Further, the method of replacing the dam plate using the self-raising mold apparatus according to the present invention is to attach a pulley to the structural material constituting the support installation floor and suspend the dam plate group on the pulley. Thus, the dismantling of the dam plate group and the placement on the transport carriage are performed.

  In the self-elevating formwork apparatus and the method of replacing the slats using the same according to the present invention, the slats are installed on the slab installation floor provided in the self-elevating formwork apparatus, A support work is placed on the back of the dam plate on the support installation floor located below, and the dam plate is dismantled on the dam plate dismantling floor arranged below the support installation floor. After moving the dismantled weir plate to the weir plate installation floor, we refill the weir plate in the procedure of building the moved weir plate again on the weir plate installation floor, but in performing such refilling, The dam plate disassembled on the dam plate dismantling floor is horizontally moved to a loading stage extending from the dam plate dismantling floor.

  As described above, the formwork device is constructed by laminating the dam plate dismantling floor, the support installation floor, and the dam installation floor in order from the bottom, and conventionally, the support installation floor and the dam board installation floor are obstructive. The weir plate placed on the floor surface of the weir plate dismantling floor cannot be lifted directly.

  Therefore, in the past, the weir plate was vertically moved using a small transporting elevator provided at the corner position of the formwork device having a rectangular planar shape, but the moving ability of the elevator was not sufficient or the weir plate The refilling efficiency of the dam plate was poor due to the reason that the moving distance on the demolished floor was long.

  Although the applicant has studied in view of this point, the center of the formwork apparatus is usually located in the center hall even if the elevator is changed from the corner portion to the straight portion and the scale is increased. Since the jack is installed, it is difficult to stack the elevator in the place.

  Therefore, as a result of focusing on whether or not weirs can be lifted on the floor even if the floor is dismantled because it is a lower floor and there is a sky head limitation that is essentially impossible to lift with a crane The invention described above has been made.

  That is, the unloading stage according to the present invention is extended to the dam plate dismantling floor so that at least a part of the horizontal floor surface is outside the outermost edges of the dam plate installation floor and the support installation floor. .

  In this way, when the unloading stage is viewed in a vertical section, it will jump out horizontally from the outermost edge of the support installation floor and the weir board installation floor, and thus the weir board placed on the floor surface can be freely moved with a crane It can be lifted.

  If the weir plate dismantled on the weir demolition floor is moved horizontally to the unloading stage extended from the weir plate demolition floor, then the weir plate horizontally moved on the unloading stage is used by the crane Lift it above the level of the installation floor.

  Next, the suspended dam plate is horizontally moved to the horizontal position where the dam plate is installed in the suspended state, and then the dam plate is suspended and the dam plate is installed on the dam plate installation floor.

  In this way, it is possible to efficiently vertically move the disassembled dam plate from the dam plate disassembly floor to the dam plate installation floor.

  The formwork apparatus is a multi-layered structure in which the weir plate dismantling floor, the support installation floor and the weir floor installation floor are laminated in order from the bottom, but as long as these three work floors are arranged in this order, Whether or not a work floor is included is arbitrary and does not exclude the case where another work floor is interposed between three work floors.

  For example, a PC strand winding work floor in which a PC strand winding machine is installed so as to be rotatable may be disposed above the weir plate installation floor.

  In addition, each work floor may be configured in a plurality of stages, and for example, the support installation floor may be configured in two stages.

  The dam plate may be disassembled to the minimum unit as in the past, but it is disassembled as a dam plate group with the adjacent dam plates connected to each other, and the dam plate group is placed on the transport carriage to the unloading stage. If it moves horizontally, the refilling efficiency of the weir plate is further improved.

  In addition, when disassembling as a dam plate group, a pulley is attached to the structural material constituting the support installation floor, and the dam plate group is suspended on the pulley so that the dam plate group is disassembled and mounted on the transport carriage. If it is arranged, it is possible to easily suspend and horizontally move the weir plate even in a connected state, not alone.

The vertical sectional view of the self-raising mold device according to the present embodiment. It is a horizontal sectional view which meets an AA line, and is a top view of the weir board demolition floor 2. FIG. It is a horizontal sectional view which follows a BB line, and is a top view of the support installation floor 3. The vertical sectional view which showed a mode that the refilling method of the weir plate which concerns on this embodiment is implemented.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a self-raising formwork device according to the present invention and a dam plate refilling method using the same will be described below with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.

  FIG. 1 is a vertical sectional view showing a self-raising mold apparatus according to the present embodiment, and FIGS. 2 and 3 are horizontal sectional views. As can be seen from these drawings, the self-elevating formwork device 1 according to the present embodiment has a multilayer structure as in the prior art, and includes a dam plate dismantling floor 2, a support installation floor 3, a dam plate installation floor 4, and Each layer of the PC strand winding work floor 5 is laminated in order from the bottom and suspended from a reaction force stand (not shown) installed on the top of the steel pipe 6 constituting the steel pipe / concrete composite structure 8. By applying a reaction force to the wire rope 9 which is the tensile material thus produced, the concrete frame 7 constituting the steel pipe / concrete composite structure 8 can be constructed sequentially from below while raising the whole.

  A PC strand winding machine 10 is rotatably installed on the PC strand winding work floor 5 arranged in the uppermost layer, and the PC strand 11 fed out from the winding machine is wound around the reinforcing bar 12. Can be done.

  The dam plate installation floor 4 is arranged below the PC strand winding work floor 5, and can perform the work of building and holding the dam plate 13 suspended by a crane at a predetermined position.

  The support installation floor 3 is arranged below the dam plate installation floor 4, and a support work 14 is installed on the back surface of the dam plate 13. The support installation floor 3 includes a support installation upper floor 3a arranged at the upper stage and a support installation lower stage floor 3b arranged at the lower stage, and the main part of the support construction 14 is installed on the support installation upper stage floor 3a. A roller 15 connected to the lower chord material of the support work 14 is disposed on the support installation floor 3b, so that contact with the concrete surface is prevented when the entire apparatus is raised.

  The dam plate dismantling floor 2 is disposed below the support installation floor 3 and serves as a work space for dismantling the dam plate 13.

  An unloading stage 21 on which the dismantled weir plate 13 can be placed is extended on the weir demolition floor 2, and the unloading stage is installed at the horizontal floor surface at the weir plate installation floor 4 and the support construction. In other words, the floor 3 is configured to jump out horizontally from the outermost edges of the dam plate installation floor 4 and the support installation floor 3 so as to be outside the outermost edges of the floor 3.

  The unloading stage 21 has a protruding length (depth) so that the dam plate 13 placed on the floor surface can be smoothly lifted without interfering with the dam plate installation floor 4 and the support installation floor 3. ), Width, and installation position are appropriately determined.

  In particular, as can be seen in FIG. 3, the center hole jack 31 through which the wire rope 9 is inserted, together with the installation frame 32 on which the jack is installed, is formed on the support installation floor 3 with the rectangular dam plate dismantling floor 2. Since there are two places on each straight part, a total of eight places, the center hole jack 31 and its installation frame 32 are prevented from interfering with each other.

  The unloading stage 21 extends to three portions of the straight portion of the dam plate dismantling floor 2 except for the side where the elevating staircase is installed, in FIG.

  It is desirable that the unloading stage 21 is configured so as not to be leveled with the weir plate dismantling floor 2 as much as possible.

  In order to refill the barrier plate 13 using the self-raising mold apparatus 1 according to the present embodiment, first, the barrier plate 13 is disassembled on the barrier plate disassembly floor 2.

  The weir plate 13 is not disassembled in a minimum unit, but is separated and dismantled from the concrete surface as a weir plate group in which adjacent members are connected to each other. For example, a total of six dam plates 13 interconnected in a vertical arrangement in three horizontal rows and two vertical rows are disassembled as a dam plate group.

  Here, when disassembling the dam plate 13 as a dam plate group instead of a single body, if the size of the dam plate is 900 mm × 600 mm, the size of the dam plate group is 1,800 mm × 1,800 mm, Correspondingly, its own weight increases from 25 kg to 150 kg.

  Therefore, as shown in FIG. 4, a fixed pulley 41 is attached to the lower chord material of the supporter 14, and the fixed pulley and the movable pulley 42 combined therewith are arranged on the concrete surface at the lift position corresponding to the dam plate dismantling floor 2. The suspended dam plate 13 is lifted as a dam plate group, and peeled and dismantled from the concrete surface. The work of pulling the rope hung on the fixed pulley 41 may be appropriately performed on the lower floor 3b of the support installation.

  The weir plate 13 is not directly suspended from the floor surface of the weir plate dismantling floor 2, but is placed on the transport carriage 43 as shown in the figure, and then the weir plate 13 placed on the transport carriage 43 is In the state, it moves horizontally to the unloading stage 21.

  The transport carriage 43 has a traveling wheel attached to the carriage body, and can move horizontally while supporting the load of the dam board 13 by dropping the edge of the dam board 13 into a groove formed in the carriage body. It is like that.

  When the weir plate 13 is moved horizontally by the transport carriage 43, the weir plate 13 has a size of, for example, 1,800 mm × 1,800 mm as a weir plate group. It may be dropped into the groove of the cart body while being peeled and disassembled, and then moved horizontally while being supported by, for example, two workers so as not to fall laterally.

  If the weir plate 13 is moved horizontally to the unloading stage 21, then the weir plate 13 is lifted from the unloading stage 21 with a crane, moved horizontally over the PC strand winding work floor 5, and then suspended. The dam plate 13 is built using the dam plate installation floor 4 as a work space.

  When the dam plate 13 is built, it may be built as a group of dam plates connected to each other rather than being suspended by a crane, that is, a single unit.

  As explained above, according to the self-raising mold apparatus 1 and the dam plate refilling method using the same according to the present embodiment, the unloading stage 21 has a horizontal floor surface position of the dam plate installation floor 4 and Since it was extended to the weir plate dismantling floor 2 so as to be outside of the outermost edges of the support installation floor 3, the unloading stage 21 can be seen from the support installation floor 3 and the weir board installation floor 4 in a vertical section. It jumps horizontally from the outermost edge.

  Therefore, the dam plate 13 placed on the floor surface of the unloading stage 21 can be lifted freely by a crane, and the disassembled dam plate 13 is efficiently vertically moved from the dam plate demolition floor 2 to the dam plate installation floor 4. As a result, the refilling efficiency of the weir plate 13 is remarkably improved.

  In addition, by setting the jumping length and width of the unloading stage 21 so as not to interfere with the center hole jack 31 installed on the support installation floor 3, the unloading stage 21 is unloaded on the straight section of the dam plate dismantling floor 2 having a rectangular flat shape. The stage 21 can be arranged, the horizontal movement distance of the dam plate 13 arranged in the straight portion of the concrete frame 7 is greatly shortened, and the replacement efficiency of the dam plate 13 is further improved.

  Moreover, according to the refilling method of the dam using the self-raising mold apparatus 1 according to the present embodiment, the dam plates are disassembled as the dam plates while the adjacent dams 13 are connected to each other. Is placed on the transport carriage 43 and moved horizontally to the unloading stage 21, so that the moving efficiency of the weir plate 13 and the refilling efficiency are further improved as compared with the case where the weir plate 13 is disassembled and transported in the smallest unit.

  Moreover, according to the refilling method of the dam plate using the self-raising mold apparatus 1 according to the present embodiment, when disassembling the dam plate 13 as a dam plate group, the fixed pulley 41 is attached to the lower chord material of the support 14. Since the fixed pulley and the movable pulley 42 combined therewith are used to lift and separate the barrier plate 13 as a barrier plate group, the barrier plate is peeled and disassembled from the concrete surface. 13 can be easily suspended and horizontally moved.

  Moreover, according to the refilling method of the weir plate using the self-raising mold apparatus 1 according to the present embodiment, the weir plates 13 are disassembled in a state of being connected to each other instead of being separated and are unloaded. After moving to the stage 21, the lump is lifted in the same manner, so that a sufficient margin is generated in relation to other processes, and during that time, it is possible to devote time to operations such as keren, cleaning, or application of a release agent. Become.

  Therefore, it is sufficient for the barrier plate 13 to be actually built, and it is not necessary to prepare a separate barrier plate for one lift as before.

  In this embodiment, the weir plates 13 are horizontally moved in a state where they are connected to each other using the transport carriage 43. However, in some cases, the transport stage 43 is manually used without using the transport carriage 43. You can carry it.

  Further, in this embodiment, the dam plate 13 is disassembled in a state of a dam plate group connected to each other instead of the minimum unit. However, in some cases, the fixed pulley 41 and the movable pulley 42 are omitted, and as before, the minimum It may be dismantled in units.

  In these configurations, the dam plate cannot be moved as quickly as the configuration described in the embodiment, but the operational effect by providing the unloading stage 21 is not different from the above-described embodiment.

DESCRIPTION OF SYMBOLS 1 Self-raising formwork device 2 Dam plate dismantling floor 3 Support installation floor 4 Dam plate installation floor 6 Steel pipe 7 Concrete frame 8 Steel pipe / concrete composite structure 9 Wire rope (tensile material)
13 Dam plate 14 Supporting work 21 Unloading stage 41 Fixed pulley (pulley)
42 Moving pulley (pulley)
43 Transport cart

Claims (4)

A slat installation floor, which is a work space for building a slat, and a support installation floor disposed below the slat installation floor and installed on the back of the slat, and the support installation A dam plate dismantling floor that is disposed below the floor and is a work space for disassembling the dam plate, and of the steel pipe and concrete frame constituting the steel pipe / concrete composite structure, In the self-elevating formwork apparatus that can construct the concrete frame sequentially from below while raising the whole by taking a reaction force on the tensile material suspended from the force stand,
The unloading stage is extended to the weir plate dismantling floor so that at least a part of the horizontal floor surface is outside the outermost edges of the weir plate installation floor and the support installation floor. Ascending formwork device. While raising the self-raising formwork device by taking the reaction force on the tensile material suspended from the reaction force frame installed at the top of the steel pipe and concrete frame constituting the steel pipe / concrete composite structure, The concrete frame is constructed sequentially from below, and a dam plate is built on the dam plate installation floor provided in the self-raising mold apparatus, and the support installation floor disposed below the dam plate installation floor A supporting work is arranged on the back of the dam plate, the dam plate is disassembled on the dam plate dismantling floor arranged below the supporting installation floor, and the dam plate disassembled on the dam plate dismantling floor is installed on the dam plate After moving to the floor, in the refilling method of the dam plate that builds the moved dam plate again on the dam plate installation floor,
The dam plate disassembled on the dam plate demolition floor is extended from the dam plate demolition floor so that at least a part of the horizontal floor surface is outside the outermost edges of the dam plate installation floor and the support installation floor. Move horizontally to the unloading stage installed, lift the weir plate horizontally moved on the unloading stage with a crane above the height of the floor where the weir plate is installed, and leave the suspended weir plate in the suspended state A method of refilling a weir plate, comprising: horizontally moving to a horizontal position where a weir plate is installed; 3. The dam plate according to claim 2, wherein when the dam plate is disassembled, the adjacent dam plates are disassembled as a dam plate group while being connected to each other, and the dam plate group is placed on a transport carriage and moved horizontally to the unloading stage. Refilling method. 4. The pulley according to claim 3, wherein a pulley is attached to a structural material constituting the support installation floor and the dam plate group is suspended on the pulley, thereby disassembling the dam plate group and placing the dam plate group on the carriage. How to replace the weir plate.

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