JP2006207297A - Method of mounting aseismic slit material between frames - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an aseismic slit material 3 from being moved carelessly in a frame when using a heat insulating panel 10 used as a frame which has a heat insulating plate 11 formed of synthetic resin foam and a plurality of crosspieces 12 as the frame. <P>SOLUTION: A rigid auxiliary member 20 having a notch part 21 is disposed between the crosspieces 12, 12 of the heat insulating panel 10 used as the frame, and the aseismic slit material 3 is attached between the frames in a state that an end part 4b of a separator 4 supporting the aseismic slit material 3 is passed through a notch part 21 of the auxiliary member 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for attaching an earthquake-resistant slit material between molds, and particularly in a concrete structure having a ramen structure, in order to improve the earthquake resistance of a structural frame, it is embedded in a portion close to a column or beam of a wall portion. The present invention relates to a method for attaching a seismic slit material between molds during construction.

  In a ramen-structured concrete structure, if a secondary wall or miscellaneous wall (waist wall, hanging wall, sleeve wall, etc.) has the function of a seismic wall, the building will be twisted during an earthquake and the columns and beams will be sheared and destroyed. There is a fear. For this purpose, an earthquake-resistant slit material is embedded in a portion of the wall portion close to the column or beam to cut the wall portion from the column or beam to enhance the earthquake resistance of the structural frame structure. For example, Patent Document 1 and Patent Document 2 describe an earthquake-resistant slit material together with its construction mode.

  Conventionally, in the construction, as shown in FIG. 5, for example, a wall mold 2 (inner mold 2a, outer mold 2b) is built so as to be continuous with a column mold 1 and is used for a wall. An appropriate seismic slit material 3 is disposed in a portion of the mold 2 close to the column mold 1. Then, by connecting the separator 4 attached to the wall mold 2 and the earthquake-resistant slit material 3 with an appropriate support member 5, the mold separator 4 is used as a reaction material, and the mold of the earthquake-resistant slit material 3 is used. Positioning and fixing between (inner mold 2a, outer mold 2b) are performed.

  The earthquake-resistant slit material 3 is made of a stretchable plate such as a calcium silicate plate, a foamed plastic plate, a glass fiber plate, or a ceramic fiber plate, and a plywood is usually used for the wall mold 2. It is done. At the time of construction, by placing concrete into the column form 1, a lateral pressure as shown by an arrow A in the figure acts on the earthquake-resistant slit material 3. The force reaches the separator 4 via the support member 5, but both ends of the separator 4 are supported by the wall mold 2 which is a plywood and functions as a reaction force material, so that the seismic slit material 3 moves unnecessarily. Never do.

  As a formwork used when constructing a wall portion of a concrete structure, not a plywood formwork, but a formwork combined heat insulating panel 10 as shown in FIG. 6 is known (for example, Patent Document 3). This heat insulating panel 10 for both formwork is composed of a heat insulating plate 11 which is a synthetic resin foam and a plurality of piers 12 attached to one surface thereof, with the heat insulating plate 11 side being a concrete placing surface. Usually used as an inner mold. By using the heat insulating panel 10 for both the formwork and the concrete for the wall, the work of disassembling the inner formwork can be omitted, and a heat insulating material is pasted on the formed concrete wall as a post work. Since the attaching work can also be omitted, there is an advantage that the construction man-hours can be greatly reduced.

Japanese Patent Laid-Open No. 11-22059 JP 2000-320181 A JP 2002-201748 A

  6 is used as the inner mold 2a of the wall mold 2 in the concrete structure as shown in FIG. 5, the inner mold is disassembled as described above. There is an advantage that an operation of attaching a heat insulating material to the concrete wall thus formed or a post-operation can be omitted. However, in the heat insulating panel 10 also used as a formwork, the plate material that functions as a formwork is the synthetic resin foam 11, and since the synthetic resin foam is more fragile than the plywood, it passes through the tip of the separator 4 there. When the seismic slit material 3 is positioned and fixed in the same manner as in FIG. 5, when a side pressure acts on the seismic slit material 3, the force acts on the synthetic resin foam 11 via the separator 4, and the synthetic resin foam is produced. It can happen that the body 11 is damaged. That is, the separator 4 that should function as a reaction force material loses its function as a reaction force material, and the seismic slit material 3 moves inadvertently from a predetermined position and is placed due to damage to the synthetic resin foam 11. There is a risk of inconveniences such as leakage of concrete paste (cement paste) and heat insulation defects.

  The present invention has been made in view of the circumstances as described above, and when a concrete structure in which a seismic slit material is embedded in a wall portion is to be constructed, a heat insulating panel that is also used as a formwork is used as a formwork for a wall. Even so, the separator that functions as a reaction force material enables the earthquake-resistant slit material to be firmly positioned and fixed between the wall molds without causing damage to the synthetic resin foam that functions as a mold. It aims at providing the attachment method between the formwork of a slit material.

  According to the method of attaching the seismic slit material between the molds according to the present invention, when constructing a concrete structure in which the seismic slit material is embedded in the wall, the separator attached to the wall mold is used as a reaction force material. A method of attaching an earthquake-resistant slit material between the molds so that the slit material is positioned between the molds, and at least a heat insulating plate that is a synthetic resin foam as an inner mold and a plurality of pieces attached to one surface thereof A heat-insulating panel for both formwork and a frame is used, and a rigid auxiliary jig having a width substantially the same as the width between the frames of the heat-insulating panel for formwork is arranged between the frames of the heat-insulating panel for formwork. The end of the separator, which should function as a reaction force material, protrudes outward from the mold / heat insulation panel side to the outer side of the auxiliary jig. And performing positioning.

  According to the method of the present invention, the end portion of the separator, which is provided to regulate the interval between the wall molds and is connected to the earthquake-resistant slit material, is the inner frame of the mold / heat insulation panel. Backed up by a rigid auxiliary member disposed between the piers, even if a side pressure acts on the seismic slit material, the end of the separator does not move laterally. The end portion of the separator that passes through the plywood mold frame side is backed up by a rigid plywood and does not move.

  Therefore, even if a heat insulating panel for molds is used as at least the inner mold of the wall mold, the separator as a reaction material does not move carelessly, and the synthetic resin for the heat insulating panel for molds is also used. There is no damage to the foam. In the present invention, the auxiliary jig can be made of solid wood, plywood, a wood material such as MDF, a resin material, a metal material, or the like, provided that it has a required rigidity.

  The auxiliary jig may have one or a plurality of holes through which the end of the separator can pass. However, in actual construction, the mounting position of the separator provided to regulate the interval of the wall formwork is not constant, and the position of the seismic slit material, such as the distance from the column, may vary from wall to wall. Many. For this reason, in the case of an auxiliary jig having an end passage hole of the separator, prepare a large number of auxiliary jigs whose hole positions are changed, or bring auxiliary jigs without holes to the construction site. It is necessary to make a hole in the proper position of the auxiliary jig.

  In order to cope with the above inconvenience, in the method according to the present invention, preferably, the auxiliary jig is a notch that is inclined in a direction crossing in the direction of running the pier from the side or even part and reaches the center in the width direction. The thing of the form provided with is used. The auxiliary jig in that form is placed between the crosspieces, and the seismic slit material is positioned with respect to the mold-insulation panel with the protruding end of the separator inserted into the notch.

  The auxiliary jig of the above form performs either or both of upside down and left / right inversion, and if necessary, moves between the berths along the pier to Even if the end of the separator protrudes at the position, the protruding end of the separator can be accommodated in the notch. In other words, this embodiment has an advantage that it can be applied to all construction sites with one kind of auxiliary jig. More preferably, an auxiliary jig having a rectangular shape and a thickness that does not protrude from the crosspiece when placed between the crosspieces is used. When using a material with a thickness that does not protrude from the pier to prevent the wall frame from opening outward, when placing a suitable flap material on the outside of the formwork, Does not collide, and the flap material can be installed stably.

  By adopting the method of the present invention, when constructing a concrete structure in which a seismic slit material is embedded in the wall, a synthetic resin that functions as a mold even if a heat insulating panel that is also used as a mold is used as a wall mold The earthquake-resistant slit material can be firmly positioned and fixed between the wall molds without damaging the foam. Thereby, in the construction of the concrete structure, it is possible to omit the work of disassembling the formwork, the work of attaching the heat insulating material to the formed concrete wall as a post work, and the construction can be simplified.

  Hereinafter, the present invention will be described based on embodiments with reference to the drawings. 1 and 2 are perspective views for explaining a method of attaching the seismic slit material according to the present invention between the molds. FIG. 1 shows a state before the auxiliary jig is attached, and FIG. 2 shows a state where the auxiliary jig is attached. Is shown. FIG. 3 is a cross-sectional view showing the state after placing concrete as seen from above. FIG. 4 shows another formation of the auxiliary jig.

  In the concrete structure of the ramen structure shown in the figure, a plywood mold is used for the outer molds 1 and 1 of the column part a and the outer mold 2 of the wall part b. As the inner molds 1a and 2a, FIG. 6 and the form and heat insulation panel 10 having the form described based on FIG. In addition, the inner mold frame of the column part may be a plywood mold frame. As described with reference to FIG. 5, an appropriate earthquake-resistant slit material 3 is provided between the wall outer mold 2 and the wall inner mold 2a and in the vicinity of the column molds 1 and 1a. The seismic slit material 3, the wall outer mold 2, and any separator 4 attached to the wall inner mold 2 a are connected by a support member 5. One end 4a of the separator 4 extends outwardly through the wall outer mold 2 which is a plywood, and the other end 4b is a synthetic resin foam of the mold / heat insulating panel 10 which is the wall inner mold 2a. The heat insulating plate 11 made of metal is extended outward. Although not shown, appropriate flap members are arranged outside the wall outer mold 2 and the wall inner mold 2a, and the end portions 4a and 4b of the separator 4 and the flap members are appropriately fastened. It is connected by the member and prevents the mold from opening outward.

  As shown well in FIG. 1, the end 4 b of the separator 4 extends outward through a heat insulating plate 11 made of a synthetic resin foam of the mold and heat insulating panel 10, and the synthetic resin foam is a plywood. Therefore, it becomes impossible to support the force in the direction of the arrow A1 generated in the separator 4 when the side pressure A is applied to the earthquake-resistant slit material 3 as described above, and the end 4b of the separator 4 becomes the arrow A1. There is a possibility that the heat insulating plate 11 made of the synthetic resin foam may be broken.

  In order to avoid this, a rigid auxiliary member 20 is used. In this example, the auxiliary member 20 is made of plywood and is substantially square. The length L of one side is substantially the same as the width between the two piers 12 and 12 located on both sides of the place where the end 4b of the separator 4 penetrates, and the thickness W is equal to the thickness of the pier 12 Is the same as or slightly lower than the height protruding from the heat insulating plate 11 made of the synthetic resin foam. The auxiliary member 20 has a notch 21 extending from one even part to the center part.

  After the state shown in FIG. 1, as shown in FIG. 2, the auxiliary members 20 are placed in the notches 21 through the end portions 4 b of the separators 4, and the piers 12, 12 of the formwork and heat insulation panel 10. Fit it in between. In the case where the end 4b of the separator 4 extends from substantially the center between the crosspieces 12, 12, the end 4b is inserted into the open tip of the notch 21, and the auxiliary member 20 is moved obliquely upward, With the end 4b in contact with the lower end of the notch 21, the auxiliary member 20 is pressed against the mold / heat insulation panel 10 so that the mold / heat insulation panel 10 is fitted between the two piers 12 and 12. It is.

  In this state, even if the force in the direction of arrow A1 acts on the end 4b of the separator 4 as described above, the force is counteracted by the crosspiece 12 via the auxiliary member 20 having rigidity. The end 4b of 4 remains in that position, does not move in the direction of the arrow A1, and the earthquake-resistant slit material 3 is firmly positioned in a state where it does not move carelessly. As a result, the occurrence of breakage in the heat insulating plate 11 made of the synthetic resin foam constituting the mold and heat insulating panel 10 is also reliably prevented.

  At the construction site, the position of the end portion 4b of the separator is not constant, and it is rather small when extending from the substantially center between the crosspieces 12 and 12 as described above, and from an unspecified position in the left-right direction and the up-down direction. It is normal to jump out. When the protruding position of the end portion 4b is on the left side of the illustrated position, even if the auxiliary member 20 is operated as described above, the end portion 4b does not enter the lower end of the notch 21, and the deviation is not caused. The auxiliary member 20 is fitted between the two piers 12 and 12 in a state where the end 4b is located in the middle of the notch 21 corresponding to the amount of positioning. Even in such a case, the reaction force against the force in the direction of the arrow A <b> 1 is reliably performed by the crosspiece 12 through the auxiliary member 20.

  Further, when the end 4b of the separator 4 is on the right side of the illustrated position, the auxiliary member 20 is reversed in the left-right direction, and then the end 4b is inserted into the open end and the auxiliary member is inclined upward. By moving 20, the auxiliary member 20 can be fitted between the two piers 12, 12 in the same manner as in the case of being displaced to the left. Depending on the vertical height of the protruding position of the end 4b from the heat insulating plate 11, the auxiliary member 20 can be attached in the same manner by reversing the auxiliary member 20 in the vertical direction. Even in these cases, it is not necessary to explain that the reaction force against the force in the direction of the arrow A1 is reliably performed by the pier 12.

  As described above, by using the auxiliary member 20 in the form shown in the figure, the seismic slit material 3 from any position of the heat insulating plate 11 made of the synthetic resin foam that constitutes the heat insulating panel 10 for both the formwork at the construction site. Even if the end portion 4b of the separator 4 supporting the projection protrudes, the same auxiliary member 20 can be used for all. Of course, in the case of a construction site where the protruding position of the end portion 4b of the separator 4 can be limited to a specific position between the two piers 12 and 12, although not shown in the drawing, one or any one at such a position is arbitrary. An auxiliary member having a number of holes can also be used.

  The auxiliary member does not have to be a square, as shown in FIG. 4a, the auxiliary member 20a whose vertical length T is shorter than the horizontal width L, and conversely, the vertical length as shown in FIG. 4b. The auxiliary member 20b whose length T is longer than the width L in the left-right direction, and further, the auxiliary member 20c partially missing but rectangular as shown in FIG. Alternatively, an auxiliary member having an arbitrary shape is appropriately selected according to the situation at the construction site, provided that it has a notch 21 that inclines in the direction intersecting with the running direction of the pier from the even part and reaches the center in the width direction. It can be selected and used.

It is a perspective view explaining the method of attaching the earthquake-resistant slit material by this invention between mold forms, and has shown the state before attaching an auxiliary jig. It is a perspective view explaining the method of attaching the earthquake-resistant slit material by this invention between mold forms, and has shown the state after attaching an auxiliary jig. Sectional drawing which shows the state after concrete placement seeing from the top. The figure which shows other formation of an auxiliary jig. The figure explaining the normal aspect which attaches an earthquake-resistant slit material between mold forms. The figure explaining the formwork combined heat insulation panel.

Explanation of symbols

a: Column part in a concrete structure with a ramen structure, b ... Wall part in a concrete structure with a ramen structure, 1 ... Outer frame of the column part, 1a ... Inner mold frame of the column part, 2 ... Outside the wall part Formwork, 2a ... Inner formwork of wall part, 10 ... Insulation panel also used as moldwork, 11 ... Insulation plate made of synthetic resin foam (synthetic resin foam), 12 ... Pier, 3 ... Earthquake-resistant slit material, 4 ... Separator 5 ... support member, 4a, 4b ... end of separator, 20 ... rigid auxiliary member, 21 ... notch

Claims (3)

When constructing a concrete structure with a seismic slit material embedded in the wall, a seismic slit material that uses a separator attached to the wall formwork as a reaction material to position the seismic slit material between the formwork It is a mounting method between molds,
Using a heat-insulating panel that is also used as a formwork composed of a heat insulating plate that is a synthetic resin foam and a plurality of crosspieces attached to one surface as an inner mold,
A rigid auxiliary jig having a width substantially equal to the width between the crosspieces of the formwork combined heat insulation panel is arranged between the crosspieces of the formwork combined heat insulation panel,
The separator that should function as a reaction material is positioned with respect to the heat-insulating panel for both the frame and the seismic slit material with the end protruding from the side of the heat-insulating panel serving as the reaction material through the auxiliary jig. A method to attach the seismic slit material between the molds.   The auxiliary jig is provided with a notch that is inclined in a direction crossing in the direction of running the pier from the side or even part, and reaches the center in the width direction, and the protruding end of the separator is inserted into the notch The method of attaching the seismic slit material according to claim 1 between the molds, wherein the seismic slit material is positioned with respect to the heat insulating panel for both the mold and the frame.   The method according to claim 2, wherein the auxiliary jig has a rectangular shape and has a thickness that does not protrude from the crosspiece when arranged between the crosspieces.

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