JP2004316135A - Structure of footing form - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of a footing form, which enables the construction of a footing beam with an accurate level of an upper surface. <P>SOLUTION: Forms 1, which are composed of a pair of form panels 1a and 1a, are raised on both sides of a part, wherein the footing beam is to be constructed, from a footing slab 6. An interval holding structure 2 for setting and holding an interval between both the form panels 1a and 1a as an interval between the parts wherein the footing beams are to be constructed is constituted midway through upper parts of both the form panels 1a and 1a. Lower parts of both the form panels 1a and 1a are supported by lower-part supporting structures 4 at the interval between the parts wherein the footing beams are to be constructed. The structure 4 is equipped with an ascent/descent adjusting mechanism 4b for supporting each of both the form panels 1a and 1a in such a manner as to make ascent/decent adjustable. The upper surface of each of the form panels 1a and 1a subjected to the adjustment of the ascent/decent is set as the level of the upper surface of the footing beam so that work for placement and leveling of leveling mortar can be performed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a foundation form structure for constructing a foundation of a building, and more particularly to a foundation form structure capable of accurately constructing a top end of a foundation beam to a reference height.
[0002]
[Prior art]
In building the foundation, it is extremely important to accurately build the height of the top of the foundation beam. Many techniques have been disclosed for easily and accurately adjusting the height of the top end of the base beam.
[0003]
Patent Literature 1 aims to provide a foundation construction method capable of easily leveling the top of the foundation by smoothly performing the leveling of the top of the foundation and ensuring the level accuracy, and `` Concrete is poured into the foundation formwork, the height of the foundation is set so that it is at a predetermined height from the concrete top where the concrete has been cast, and then a plurality of damming plates are installed at predetermined intervals on the concrete top And a foundation construction method in which self-leveling material is poured from a concrete top to a base top in a damming section defined by adjacent damming plates.
[0004]
Patent Literature 2 has a problem of “accurate precision, labor saving, cost reduction, and improvement of the leveling equipment for leveling a foundation of a building such as a house”. The horizontal leveling adjuster made of a substantially inverted L-shaped metal consisting of a horizontal plate and a mounting plate having one side suspended in a right angle direction is aligned with the level line of the building foundation set on the formwork, and the horizontal leveling is performed. Via the magnetic material for temporary fixing magnetically attached to the mounting plate of the adjusting tool, the horizontal leveling adjusting tool is temporarily fixed to the oppositely disposed formwork, and furthermore, strong between the temporarily fixed leveling adjusting tool mounting plate. Tighten the elastic tensioning fixture, then place a concrete foundation horizontally with the horizontal plate of the leveling adjustment tool on the top into the formwork, and after solidifying the concrete foundation, formwork and magnetic for temporary fixing Horizontal level of the top of a foundation in a residential building that is provided so that it can be removed A substantially horizontal L-shaped metal leveling adjuster comprising a rectangular horizontal plate having an upper surface formed horizontally and a mounting plate having one side vertically suspended, and the adjuster It consists of a magnetic material for temporary fixing that is magnetically attached to the outer fastening part of the mounting plate, and a tension fixture that is tensioned and fixed between the leveling adjustment tools that are temporarily magnetized to the formwork. An adjustment brace for leveling the top of a foundation in a building such as a house made of a high elastic metal wire, a band-like metal plate, or a high elastic synthetic resin material is disclosed.
[0005]
However, in the method of Patent Document 1, when setting the height of the foundation beam by placing a self-leveling material on the top of the concrete, prior to this, the top of the concrete is moved along the length direction by a predetermined length. There is a need to partition into a number of damming sections of length, which requires a rather cumbersome task of placing a number of damming plates at intervals of the sections.
[0006]
In addition, in this method, after pouring the self-leveling material for each damming section, it is necessary to sequentially remove the damming plates between adjacent sections before it hardens, and it is necessary to level out the connecting portion that is a concave portion generated after withdrawal. This has to be said to be a cumbersome task, as there are so many races with time.
[0007]
Next, in the adjusting device of Patent Document 2 and the method using the same, it is necessary to install the adjusting device having the complicated shape on the inner surface of the form while adjusting the level, which is a rather troublesome operation. In addition, since the adjusting device is fixed to the iron-based metal form by the magnetic force of the magnetic material, there is a high possibility that the adjusting device will move at the time of placing concrete, and a tension fixing device for fixing the device is provided. However, it is questionable how effective this fixation is. In addition, such adjusting devices hinder the casting of concrete, and it appears that it is not easy to fill concrete underneath, in particular.
[0008]
[Patent Document 1]
JP-A-2002-339375
[Patent Document 2]
JP-A-9-41671
[0009]
[Problems to be solved by the invention]
The present invention solves the problems related to the above-described conventional method for constructing a foundation or an apparatus, and constructs a foundation of a building, in particular, at the top level of a foundation beam accurately, at a short time and at low cost. It is an object of the present invention to provide a basic formwork structure that can be used.
[0010]
[Means for Solving the Problems]
A first aspect of the present invention is a formwork comprising a pair of formwork panels standing up from a base slab on both sides of a planned portion of a base beam, and the concrete slab is formed by setting the top ends of both form panels to the base level of the base beam. A formwork that can be installed
An interval holding structure for holding the interval between the two formwork panels of the formwork at the interval of the base beam planned portion, and an interval holding structure formed in the middle of the upper part of the both formwork panels,
A lower support structure for holding the lower portions of both form panels of the form at the intervals of the base beam planned portions, and a lower support structure for supporting each of the form panels in a vertically adjustable manner. It is a basic formwork structure.
[0011]
That is, the basic formwork structure of the present invention basically comprises a formwork composed of a pair of formwork panels, a space holding structure for maintaining an upper space between the formwork panels at the predetermined space, and a formwork. And a lower support structure that holds the lower space between the panels at the predetermined space and supports the height of the form panel so that the height of the form panel can be adjusted up and down.
[0012]
The formwork is composed of a pair of formwork panels, and the formwork panel is constructed by standing up from a base slab on both sides of a planned base beam at intervals. The formwork panel is a plate-like member made of a plywood or an iron plate or the like having a thickness enough to support the cast concrete. You can select and adopt. The height of the form panel is slightly shorter than the planned height of the foundation beam in consideration of the height adjustment allowance. This is because both formwork panels are raised and lowered to make the top end the top level of the foundation beam. The length is the same as the conventional one. In addition, the shortage of the dimension of the form panel in the height direction is compensated for by the lower support structure in the lower part. For example, as described later, it is covered with the root winding auxiliary member.
[0013]
The space holding structure is provided to hold the space between the pair of form panels at the space between the base burrs. As described above, such a spacing maintaining structure is formed in the middle of the upper part of the form panel. Preferably, it should be located near the top of the form panel, but below the top. If the formwork panel is constructed so as to straddle both formwork panels above its top end, it will be a hindrance to cast leveling concrete or leveling mortar on the concrete top and to level it. This is because there is a possibility that accurate and smooth work may be hindered.
[0014]
Therefore, the space holding structure is, as described above, a structure capable of holding the space between the form panels at a predetermined space, and below the top end of the form, as long as it can be arranged as high as possible. It is not limited to that of a particular configuration.
[0015]
The lower support structure, as described above, supports both the form panels of the form at the lower portion thereof at intervals between the base beam planned portions, and simultaneously supports the form panels in a vertically adjustable manner. It is. In the present invention, the top end of the formwork is set as the top end level of the foundation beam, and the above-mentioned vertically adjustable support is a configuration for realizing that.
[0016]
Therefore, the lower support structure is not limited to a specific configuration as long as the above functions can be realized.
[0017]
Therefore, according to one foundation form structure of the present invention, in order to construct a foundation of a building, first, a foundation slab is cast, and the lower support structure is arranged along a planned foundation beam on the foundation slab. Thereby, both the formwork panels of the formwork are supported at the width of the base beam planned portion and the height thereof can be freely adjusted.
[0018]
The space holding structure is arranged in the middle of the upper part of the form panel, and the inner structure of both form panels is adjusted to the width of the base beam planned portion and held. As described above, the gap holding structure may be attached to the lower support structure after installing both formwork panels on the lower support structure, or may be attached to the both formwork panels in advance and then attached to the lower support structure. It is good.
[0019]
Height adjustment of the formwork by the lower support structure, as described above, after both formwork panels are installed at the width of the planned base beam by the lower support structure and the spacing holding structure, for example, level and other measuring instruments Perform using This height adjustment is set so that the top of the formwork coincides with the top level of the planned foundation beam.
[0020]
After the installation and height adjustment of all the formwork panels, concrete is poured to a position slightly below the top end of the formwork panel, for example, to a position about 15 mm below, and at the stage where curing has started slightly. Then, leveling concrete or leveling mortar is cast on the concrete top. These leveling concretes etc. are cast according to the top of the formwork. Next, the leveling work of the leveling concrete or the like is immediately performed. This leveling operation can be freely performed using a general tool for performing this type of conventional operation, for example, a wood trowel or a metal trowel.
[0021]
At this time, as described above, the upper surface of the leveling concrete or the like is cast in accordance with the top ends of the both formwork panels, and the leveling work is performed. The gap is appropriately maintained in the middle of the upper part of the panel, and does not have a component protruding beyond the top end. Therefore, the work of placing the concrete form or the like on the top of the concrete between the formwork and the work of leveling the concrete can be easily and accurately performed without any obstacle.
[0022]
Furthermore, as described above, since the top of the formwork is to be matched with the expected level of the top of the foundation beam, the work of leveling the upper surface of leveling concrete or the like to be performed so as to match the top of the formwork. Can be performed extremely easily and accurately as compared with a method using an existing method or a tool that looks into the inside of a form panel.
[0023]
Therefore, according to the basic formwork structure of the present invention, it is possible to construct a foundation beam of a building in which the top level is configured with high accuracy in a short time and at low cost.
[0024]
According to a second aspect of the present invention, in the basic formwork structure according to the first aspect of the present invention, the distance maintaining structure is provided with two P-cons provided in a contact state inside the both form-panels, and the two P-cons. A separator that is threaded at both ends thereof and penetrates and protrudes into the two form panels to regulate the distance from the inside; and an outer surface of the two form panels arranged at the outer ends of the separators. An external regulating member which presses the panel inward and regulates the interval from the outside.
[0025]
The space holding structure can be composed of two P-cons, one separator, and an external regulating member. Can be easily set to the width of the planned portion of the foundation beam as described above.
[0026]
The P-con is a well-known tapered plastic member, and two of them are screwed through male screws on both sides of the separator, and their outer ends are brought into contact with the inner surfaces of both form panels. Used to regulate the space between formwork panels from the inside. By adjusting the distance between the outer ends of the two P-cons to be equal to the width of the base beam planned portion, the distance between the two formwork panels can be easily and accurately matched to the distance.
[0027]
The separator is a well-known metal bolt member, and external threads are formed over the entire length or in necessary areas on both sides. As described above, the P-cons are screwed into the male screws on both sides. As described above, both ends are used by penetrating through each of the two formwork panels through the bolt holes opened in the middle of the upper part thereof. At this time, as described above, the outer ends of the two P-containers screwed and fixed to both sides of the separator come into contact with the inner surfaces of the two formwork panels.
[0028]
As described above, the external restricting members are disposed at both outer ends of the separator, and act to press both the formwork panels from the outside to the inside, thereby restricting the interval between the formwork panels from the outside. In combination with the regulation from the inside by the separator and the two P-cons, the interval between the two formwork panels can be reliably maintained at the predetermined interval.
[0029]
As the external restricting member, any configuration can be adopted as long as it can be arranged at both outer ends of the separator and can perform the above-described functions. For example, a foam tie that is screwed to the outer end of the separator, a backing plate attached thereto, and a horizontal member fixed parallel to the upper portion of the form panel and held down by a corresponding plate are basically used. A well-known configuration can be adopted.
[0030]
Therefore, according to the second foundation form structure of the present invention, it is possible to easily and accurately set the interval between the two forms to the interval between the foundation beam planned portions by a simple operation, and to set this interval. It can be maintained without any problem even when a large load is applied due to the casting of concrete or the like. Furthermore, since all of the components are located below the top end of the formwork, the work of placing concrete between the formwork and the leveling work is not disturbed by anything. Can be easily and accurately performed.
[0031]
According to a third aspect of the present invention, in the first or second basic formwork structure of the present invention, the lower support structure is formed by adding a space between the planned base beam and the thickness of the formwork panels on both sides on the basic slab. And a wooden mounting piece supported by a pedestal of the raising and lowering adjustment mechanism raised from the double-rolling auxiliary member and the lifting and lowering adjustment mechanism. A wooden mounting piece fixed to the lower outside of the frame panel.
[0032]
The lower support structure regulates the interval between the form panels, and also serves as a base winding auxiliary member serving as a base member of the entire formwork, a lifting and lowering adjustment mechanism for supporting the formwork panels in a vertically adjustable manner on a pedestal, And a wooden mounting piece for supporting the frame panel with the receiving stand.
[0033]
The root winding auxiliary member is suitably composed of a long wooden member having a quadrangular cross section. As described above, the interval between the planned base beam portions and the form panels on both sides are formed on the base slab as described above. Are fixedly installed at an interval obtained by adding the thicknesses. The auxiliary member can be easily fixed on the foundation slab by an existing well-known means such as a concrete nail.
[0034]
The raising and lowering adjustment mechanism is configured to start up from the root winding auxiliary member, adjust the height of a receiving table above the rooting auxiliary member, and adjust the height of the top end of the form panel through this. The configuration is not limited to a particular one.
[0035]
The wooden placing piece is supported on the one hand by the receiving stand of the elevation control mechanism, and is fixed to the lower outside of the form panel on the other hand. It can be composed of a long wooden member having the same quadrangular cross section as the root winding auxiliary member. The fixing to the form panel can be performed with screws or the like.
[0036]
Therefore, according to the third basic formwork structure of the present invention, it is possible to easily set the space between the lower portions of both formwork panels to the predetermined space, and to set the top end of both formwork panels. The height can be easily and precisely adjusted.
[0037]
A fourth aspect of the present invention is the basic formwork structure according to the third aspect of the present invention, wherein the lifting and lowering adjustment mechanism is centered on a pedestal fixed to the root winding auxiliary member and a screw passage hole opened in the pedestal. A nut member fixed to the nut member, a hollow bolt member screwed to the nut member so as to be vertically movable, and a receiving stand fixed to an upper end of the hollow bolt member, and communicating with a hollow portion of the hollow bolt. And a pedestal having an opening.
[0038]
The pedestal can freely adopt a plate-like member that can be appropriately fixed to the root winding assisting member. For example, it can be composed of a horizontal plate portion having a screw passage hole opened in the center and a fixing piece bent at a right angle from the outer edge thereof. A screw hole is opened in the fixing piece. The screw holes in the horizontal plate and the screw holes in the fixing piece are both referred to as screw holes or screw holes, but this opening is not limited to screws, but also includes cases where fixing means such as nails penetrate. . In the pedestal thus configured, the horizontal plate portion is placed on the upper surface of the root winding auxiliary member, and the fixing piece is brought into contact with the side surface of the root winding auxiliary member. Screws or nails are screwed or driven into the root winding auxiliary member to fix the pedestal to the root winding auxiliary member.
[0039]
The nut member is, as described above, raised on the pedestal around its screw passage hole, and when the pedestal is constructed as described above, the horizontal plate portion has a screw passage hole. Start up around. The lower end of the nut member and the horizontal plate of the pedestal can be fixed by welding.
[0040]
The hollow bolt member is screwed to the nut member as described above. The hollow bolt member is literally a hollow tubular member, and is a member having an external thread formed on the outer periphery thereof. At the upper end, as described above, a pedestal having an opening communicating with the hollow portion is fixedly provided. This can also be fixed to the upper end of the hollow bolt member by welding or the like. The length, diameter, material and the like of the hollow bolt member can be appropriately determined. The pedestal is a member for mounting a wooden mounting piece fixed on the outer surface of the formwork panel, and there is no inconvenience as long as it is a plate material of a size that allows this. However, it is preferable that the receiving table be formed in a disk shape because it must be rotated simultaneously when the hollow bolt member is rotated to change the screwing state with the nut member.
[0041]
In addition, between the receiving table and the wooden placing piece, if necessary, a spacer having an opening equivalent to the opening of the receiving table may be interposed to perform auxiliary adjustment of the height. Is also possible. That is, an exceptional case in which the top end of the form panel could not be raised to a required height even with the maximum stroke by adjusting the screwing of the hollow bolt member and the nut member. Then, as described above, the height can be corrected with the spacer interposed therebetween.
[0042]
Therefore, according to the fourth formwork structure of the present invention, the height of the top end of the formwork panel can be easily adjusted. After the adjustment, the screw is screwed or nailed from above the wooden mounting piece, and the opening of the receiving base, the hollow bolt hollow part, the nut member and the screw member through the screw passage hole of the base to the root winding auxiliary member. By extending and screwing or hammering into this, the two formwork panels can be fixed to the root winding auxiliary member via the wooden mounting piece and this elevating mechanism.
[0043]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail based on examples and with reference to the accompanying drawings.
[0044]
<Example>
As shown in FIG. 1, the basic formwork structure of this embodiment is based on a formwork 1 comprising a pair of formwork panels 1a and 1a, and a space between the formwork panels 1a and 1a of the formwork 1 to be based on a plan. In order to maintain the space between the parts, the space holding structure 2 formed in the middle of the upper part thereof, and the lower parts of both the formwork panels 1a and 1a of the formwork 1 are supported so as to be vertically movable at the space of the planned base beam. And lower support structures 4 and 4.
[0045]
The formwork 1 is composed of a pair of formwork panels 1a and 1a as described above and shown in FIG. It is. In this embodiment, as the formwork panels 1a and 1a, plywood having a thickness capable of supporting concrete to be cast is adopted. Of course, both the formwork panels 1a, 1a may be metal panels. The top ends of both formwork panels 1a, 1a are set to the level of the top end of the base beam to be constructed.
[0046]
As shown in FIG. 1, the interval maintaining structure 2 includes an inner regulating portion 2 including two P-cons 2a1 and 2a1 and one separator 2a2 each of which is screwed into a male screw on both sides. A foam tie 3a screwed to each outer end, a backing plate 3b having a central hole penetrated through each of the foam ties 3a, and a pressing force of each of the backing plates 3b toward the form panel 1a are adjusted. A tightening nut 3d screwed to a male screw 3c on the outer end side of the foam tie 3a and a flattened parallel to the upper part of each form panel 1a and suppressed by both ends of the backing plate 3b. This is constituted by an external regulating portion 3 composed of members 3e and 3e.
[0047]
Note that the horizontal members 3e, 3e are arranged on the upper side of the form panel 1a in parallel with the upper and lower equal distances centered on the bolt holes for penetrating the separator 2a2. The fixing to the form panels 1a, 1a is performed by screwing screws 3f from the inside.
[0048]
Therefore, according to this space holding structure, as shown in FIG. 1, it is possible to easily and surely adjust the space between the form panels 1a, 1a to the space between the planned portions of the foundation beam and to fix it.
[0049]
As shown in FIG. 1, first, P-cons 2a1 and 2a1 are screwed halfway on both sides of the separator 2a2, and then both ends of the separator 2a2 are made to pass through bolt holes opened in the middle of the upper part of the form panels 1a and 1a. . By adjusting the screwing state of the P-cons 2a1, 2a1, the distance between the outer ends of the P-cons 2a1, 2a1 is made to coincide with the interval of the planned base beam, and the inner surfaces of the form panels 1a, 1a on both sides are adjusted to the P-cons 2a1, 2a1. Of the formwork panels 1a, 1a, not to mention the space between the scheduled portions of the foundation beam. Thus, the regulation by the internal regulation section 2a is completed.
[0050]
On the outside of the form panels 1a, 1a, as shown in FIG. 1, the inner end of the foam tie 3a is screwed into a male screw at the outer end of the projecting separator 2a2 to be in an extended state. Both ends of the penetrated backing plate 3b are pressed against the side members 3e, 3e fixed in parallel to the outer surface of the form panel 1a, and the tightened nut 3d is tightened to fix the pressed state. I do. Thus, the regulation by the external regulation unit 3 is completed.
[0051]
The form panels 1a, 1a are regulated in this manner from the inside and the outside, so that the inner width thereof is surely held at the interval between the base beam planned portions.
[0052]
As shown in FIGS. 1 and 2, a lower support structure 4 formed below each of the form panels 1a, 1a regulates the interval between the form panels 1a, 1a, and also controls the entire form 1. A root winding auxiliary member 4a serving as a base member, a lifting / lowering adjusting mechanism 4b for supporting the form panel 1a in a vertically movable manner on a receiving base 4b1, and a wooden mounting for supporting the form panel 1a on the receiving base 4b1. And a piece 4c.
[0053]
As shown in FIGS. 1 to 3, the root winding auxiliary member 4 a is formed of a long wooden member having a quadrangular cross section. The thickness of the frame panels 1a, 1a is fixed at a total interval. As shown in FIG. 3, the root winding auxiliary member 4a is fixed on the base slab 6 by concrete nails 4a1.
[0054]
As shown in FIGS. 1 to 3, the lifting / lowering adjusting mechanism 4b includes a pedestal 4b2 fixed to the root winding assisting member 4a and a screw passage hole opened in a horizontal plate portion 4b21 of the pedestal 4b2. It comprises a raised nut member 4b3, a hollow bolt member 4b4 screwed to the nut member 4b3 so as to be vertically movable, and a receiving stand 4b1 fixed to the upper end of the hollow bolt member 4b4.
[0055]
As shown in FIGS. 1 to 3, the pedestal 4b2 is bent at a right angle along a horizontal plate portion 4b21 placed on the upper surface of the root winding auxiliary member 4a and an outer edge of the root winding auxiliary member 4a. And the fixed piece 4b22. In the horizontal plate portion 4b21, a hole for passing a fixing means such as a screw or a nail is opened at a central portion thereof, and the pedestal 4b2 itself is similarly wound around the central portion of the fixing piece 4b22. A hole for a screw or a nail for fixing to the auxiliary member 4a is opened.
[0056]
As shown in FIGS. 1 to 3, the nut member 4b3 is set up on the horizontal plate portion 4b21 of the pedestal 4b2 around a hole for passing the fixing means, and this state is fixed by welding.
[0057]
The hollow bolt member 4b4 is screwed to the nut member 4b3 as shown in FIGS. The hollow bolt member 4b4 is literally a hollow cylindrical member, and has an external thread formed on the outer periphery thereof. At the upper end, as described above, the receiving table 4b1 is fixed. The receiving table 4b1 is a disk member having an opening communicating with the hollow portion of the hollow bolt member 4b4, and a corresponding portion on the lower surface is fixed to the hollow bolt 4b4 by welding.
[0058]
As shown in FIGS. 1 to 3, the wooden placing piece 4 c is a long wooden member having a quadrangular cross section and arranged in the middle of the lower part of the form panels 1 a and 1 a. The fixing to the form panels 1a, 1a is performed by screws 4c1. The wooden placing piece 4c is placed on and supported by the receiving table 4b1 of the elevation control mechanism 4b. As will be described later, after the height adjustment of the form panels 1a, 1a is completed, a screw 5 is screwed or nailed from the upper surface of the wooden mounting piece 4c, and the screw is nailed to the root winding auxiliary member 4a. It is used to be fixed.
[0059]
Therefore, according to the foundation form structure of this embodiment, in order to construct the foundation of the building, the foundation slab 6 is first constructed by a general technique, and the assembled reinforcing bars protrude thereon, similarly to the general one. The lower support structures 4, 4 are arranged along the planned foundation beam portion, and thereby both the formwork panels 1a, 1a of the mold frame 1 are supported so as to be adjustable in width and height of the planned foundation beam portion.
[0060]
The root winding assisting members 4a, 4a of the lower support structures 4, 4 are positioned at the predetermined positions on the foundation slab 6 and fixed by the concrete nails 4a1 as described above, and As described above, the pedestal 4b2 places the horizontal plate portion 4b21 on the root winding auxiliary members 4a, 4a, and puts the nail 4b221 through the center hole of the fixing piece 4b22 which is in contact with the side. This is fixed by driving in, and after that, the formwork panels 1a, 1a are respectively arranged inside the root winding auxiliary members 4a, 4a, and the wooden placing piece 4c in the middle of the lower outside thereof is shown in FIG. Thus, each of the lifting and lowering mechanisms 4b is placed on the receiving table 4b1.
[0061]
Next, as shown in FIG. 1, the interval holding structure 2 is arranged in the middle of the upper portions of the two formwork panels 1a, 1a, and the inner width of the both formwork panels 1a, 1a is set to the width of the planned base beam. Hold this while adjusting.
[0062]
Attachment of the inner regulating portion 2 to the form panels 1a and 1a, which is composed of the two P-cons 2a1 and 2a1 of the gap maintaining structure 2 in this case, and one separator 2a2 each of which is screwed to a male screw on both sides. Procedures and foam ties 3a, abutment plates 3b each having a central hole penetrated through each of the form ties 3a, and a tightening nut 3d for adjusting the pressing force of each of the abutment plates 3b toward the form panel 1a. The procedure for attaching the external regulating portion 3 to the form panels 1a, 1a, etc., is as described above.
[0063]
In the above, the interval between the form panels 1a, 1a is maintained at a predetermined interval by arranging the lower end outer surface at a lower portion thereof in contact with the inner surface of the root winding auxiliary members 4a, 4a. As described above, the upper part is screwed with the separator 2a2 so that the distance between the outer ends of the P-cons 2a1 and 2a1 in the internal regulating part 2a of the space holding structure 2 matches the distance between the base burr-scheduled parts. When the state is adjusted and the tightening nut 3d of the external regulating portion 3 is tightened as necessary to properly set the pressing force applied to the side members 3e, 3e of the backing plate 3b, the positioning is performed from both the inner and outer sides. The intervals between the form panels 1a, 1a are maintained at predetermined intervals. These are also as already described.
[0064]
Thereafter, the height of the mold 1 is adjusted by the elevation adjustment mechanism 4b of the lower support structure 4. This is done using a level or other measuring device. This height adjustment is set so that the top of the formwork 1 matches the top level of the planned foundation beam.
[0065]
This height adjustment is performed by rotating the hollow bolt member 4b4 of the elevation adjustment mechanism 4b and adjusting the screwing state with the nut member 4b3. As a result, the hollow bolt member 4b4 is raised and lowered, and the form panels 1a and 1a supported via the wooden mounting piece 4c mounted on the receiving table 4b1 are raised and lowered. In addition, the receiving table 4b1 is rotated with this elevating operation, but there is no problem because the wooden placing piece 4c is merely placed on the receiving table 4c as described above. As described above, when the predetermined height is confirmed based on the standard set by the device such as the level, the height adjustment is completed.
[0066]
Thereafter, as shown in FIGS. 1 to 3, each of the hollow portions of the horizontal plate portion 4b21 of the receiving base 4b1, the hollow bolt member 4b4, the nut member 4b3, and the pedestal 4b2 is placed on the wood mounting piece 4c. A screw 5 is screwed into the root winding assist member 4a through the hole, and the form panels 1a, 1a are fixed to the corresponding root winding auxiliary member 4a.
[0067]
After the installation and height adjustment of all the form panels 1a, 1a... Are completed, concrete is poured from the top ends of the form panels 1a, 1a to a position slightly below, for example, about 15 mm below. When the hardening slightly starts, a leveling mortar 8 is cast on the top 7 of the concrete. The leveling mortar 8 is cast according to the top ends of the form panels 1a, 1a. Next, the leveling mortar 8 is immediately leveled. This leveling operation can be freely performed using a general tool for performing this type of conventional operation, for example, a wood or iron trowel, or a register mark.
[0068]
At this time, as described above, the upper surface of the leveling mortar 8 is cast and fitted to the top ends of the two formwork panels 1a, 1a, and the leveling work is performed. Since the space holding structure 2 for appropriately holding the space between the mortars 8a and 2a does not have a component protruding beyond the top, the concrete top 7 between the two formwork panels 1a and 1a of the leveling mortar 8 is used. Both the casting operation on the upper side and the leveling operation of the leveling mortar 8 can be performed easily and accurately without any hindrance.
[0069]
Furthermore, since the top ends of the formwork panels 1a and 1a are made to coincide with the level of the top end of the foundation beam to be constructed, the leveling work of the upper surface of the leveling concrete or the like performed to fit the top end of the formwork panels 1a and 1a is performed. This can be performed extremely easily and accurately as compared with a method using an existing method or a tool that looks into the inside of the frame panel.
[0070]
Therefore, according to the foundation formwork structure of this embodiment, it is possible to construct a foundation beam of a building in which the top end level is configured with high accuracy in a short time and at low cost.
[0071]
【The invention's effect】
According to the basic formwork structure of one aspect of the present invention, the space holding structure for holding the space at the upper part of the formwork panel at a predetermined position is formed in the middle of the upper part of the formwork panel. There is no obstacle to the leveling mortar setting operation and the subsequent leveling operation performed after the concrete is set. Therefore, this can be performed with high accuracy and in a short time. Also, since the top level of the foundation beam to be constructed is made to match the top level of the formwork panel, the top level is easy to understand, and the work is extremely easy and accurate.
[0072]
According to the second basic formwork structure of the present invention, the space holding structure for holding the space at the upper part of the formwork panel at a predetermined position does not have any component protruding above the top end of the formwork. Therefore, the leveling mortar setting operation and the subsequent leveling operation performed after the concrete has been set can be performed with high accuracy and in a short time.
[0073]
According to the third basic form structure of the present invention, it is possible to easily and inexpensively set the interval at the lower part of the form panel and adjust the height of the top end of the form panel. .
[0074]
According to the fourth formwork structure of the present invention, the height adjustment of the top end of the formwork panel can be performed easily and at low cost.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view of a basic formwork structure.
FIG. 2 is an enlarged sectional view showing a part of a lower support structure of one form panel of the basic form structure.
FIG. 3 is a side view showing a part of a lower support structure of one form panel of the basic form structure.
[Explanation of symbols]
1 formwork
1a Formwork panel
2 Spacing structure
2a Internal regulation department
2a1 P-con
2a2 separator
3 External regulation department
3a Form tie
3b backing plate
3c male screw
3d tightening nut
3e Horizontal member
3f screw
4 Lower support structure
4a Root winding auxiliary member
4a1 concrete nail
4b Elevation adjustment mechanism
4b1 Cradle
4b2 pedestal
4b21 Horizontal plate
4b22 Fixed piece
4b221 nail
4b3 Nut member
4b4 Hollow bolt member
4c wooden mounting piece
4c1 screw
5 screws
6 Basic slab
7 Top of concrete
8 Leveling mortar

Claims (4)

A formwork constructed by raising a pair of form panels from the base slab on both sides of the planned portion of the foundation beam. Concrete can be cast with the top ends of both form panels being the foundation beam top level. Formwork,
An interval holding structure for holding the interval between the two formwork panels of the formwork at the interval of the base beam planned portion, and an interval holding structure formed in the middle of the upper part of the both formwork panels,
A lower support structure for supporting the lower portions of both the formwork panels of the formwork at intervals between the foundation beam planned portions, and a lower support structure for supporting each of the formwork panels so as to be vertically movable. Basic formwork structure. The distance maintaining structure is provided with two P-cons arranged in contact with the inside of the two form panels, and the two P-cons are screwed together at both ends thereof so as to penetrate and protrude from the two form panels, thereby forming a gap. A separator that regulates the inner form from the inside, and an external restricting member that arranges the outer side surfaces of the form panels at the outer ends of the separators, presses the form panels inward, and regulates the interval from the outside. 2. The basic formwork structure of claim 1, wherein the base formwork structure is constructed. The lower supporting structure is fixed on both sides of the base slab at the sum of the interval of the foundation beam planned portion and the thickness of the form panels on both sides, and the both side winding auxiliary members, 2. A wooden mounting piece supported by a stand of the rising and lowering adjustment mechanism and a wooden mounting piece fixed to an outer lower portion of the formwork panel. Or 2 of the basic formwork structure. A pedestal for fixing the lifting / lowering adjustment mechanism to the root winding assisting member, a nut member raised and fixed on the pedestal around a screw passage hole opened in the pedestal; 4. The base formwork according to claim 3, comprising a hollow bolt member to be combined, and a pedestal fixed to an upper end of the hollow bolt member, the pedestal having an opening communicating with the hollow portion of the hollow bolt. Construction.

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