JPH09317173A - Corner u-shaped side ditch adjustable form and side ditch cover adjustable form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the execution of a form for cast-in-place concrete to a corner part in a U-shaped side ditch and to eliminate cutting work of a concrete form panel. SOLUTION: In forms of an interior angle side K2 of a corner part bent at an angle of approximate 45 deg. of a precast U-shaped concrete side ditch and an exterior angle side K1 (the form of the interior angle side is omitted), they are formed of first forms 15 constituted of two templets 13 and 14 connected to the vertical direction with a sliding mechanism in a slidable manner and second forms 18 with the same mechanism. Then, the side end faces 15a coming into contact so as to continue by making face contact the first forms 15 with the side end faces 15a are made to execute face cutting work (chamfer of angle 22.5 degree) (as well as the second forms 18), while coming into contact the first forms 15 and part of the second forms 18 with inside face 10b and outside face 10a of the precast U-shaped concrete side ditch 10, they are constructed by stretching and pushing with support 31, etc. In addition, a horizontal templet 35 capable of adjusting height by sliding up and down is built and fixed to a space between the second forms 18 and the outside of the precast U-shaped concrete side ditch 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork for in-situ concrete pouring used at the time of construction of a corner portion (bending portion such as a corner) of a gutter or the like of a road. TECHNICAL FIELD The present invention relates to a U-shaped gutter free mold for corners and a mold for the lid, which are suitable for in-situ casting of a gutter having an arbitrary size in a corner portion of a mold gutter and a gutter lid.

[0002]

2. Description of the Related Art In Japan, U-shaped gutters made of concrete are widely used as gutters on the roadside. For construction of these U-shaped concrete gutters, all the formwork is erected on site and concrete pouring is performed. There is a method of and a method of connecting precast products side by side.

At present, precast products of various standardized sizes are commercially available, and the latter construction is usually adopted in most cases from the viewpoint of shortening the construction period and ensuring the finish.

However, if the gutter at the corner of the road is bent at a right angle, the flow of sewage will deteriorate, so normally it will be bent twice at about 45 degrees and bent, but this corner part is precast U type. Since it is not possible to use concrete gutters and the dimensions are indefinite, measure the dimensions of the corners at the site and cut out the formwork one by one from the panel such as plywood, and support this (support rod whose length can be freely changed) U-shaped concrete gutters and gutter lids must be built on site by erection at the corners and concrete pouring.

FIG. 8A is a schematic plan view for explaining the condition of the corner portion of the precast U-shaped concrete gutter, and FIG. 8B is for explaining the vertical cross-sectional shape and the dimensions of the precast U-shaped concrete gutter. FIG.

In FIG. 8, the length of the precast U-shaped concrete gutter 10 is generally L = 2 m or 1 m, and the groove opening width a = 30, 40, 50, 60 cm ..., The step portion 2 for locking the lid. Width d = 5, 5.5, 6 cm, lid thickness c ′ = 10 cm, groove depth c = 30, 40, 50, 60
cm ..., the thickness of the gutter lid 20 is 10 cm, and the length J = 50
The standard is such as cm, and the ditch in the straight part of the road can be easily constructed by simply arranging the precast U-shaped concrete gutters of the same standard and connecting the joints with mortar.

However, as shown in the corner portion of FIG. 8A, when the above precast products are lined up at the corner portion of the road, a corner K1 (K2) bent twice at about θ = 45 degrees. , Since edge dimensions occur at the corner K3 (K4), U at the corners of these two locations
Precast products of the mold gutters 25 and 26 cannot be manufactured in advance, and they must be manufactured in-situ. Similarly, the gutter lids 3 and 4 are also formed in-situ at the corners K1 and K3. There is no choice but to make it.

[0008]

However, the molds of the corners K1 (outer corner side), K2 (inner corner side), K3 (outer corner side), and K4 (inner corner side) of the corner portion of the above-mentioned gutter are appropriately changed sequentially on site. The work of making dimensions by cutting out from a panel (such as a plywood board) and installing it and placing concrete into it has to go through a fairly complicated process, especially when cutting out the formwork and erection is a troublesome cut-out panel end plate. Is very inefficient and uneconomical.

Therefore, according to the present invention, the U-shaped concrete gutters 25 and 26 at the corners which are troublesome at the time of construction with the above-mentioned precast U-shaped concrete gutters and the gutter lids 3,
In order to facilitate the in-situ casting work for the production of No. 4, there is no need to cut out the formwork panel that was required in the past, and a formwork that is compatible with precast U-shaped concrete gutters of various dimensional standards is available. The purpose is to be ready immediately.

[0010]

In order to achieve the above-mentioned object, the present invention provides (1) a formwork for an inner side surface and an outer side surface of a corner portion of a U-shaped concrete gutter which is bent at an angle of about 45 degrees. , A first mold composed of two mold plates, each side mold being bent and formed so as to match the shape of the inner surface of the precast U-shaped concrete gutter, and vertically slidably connected by a sliding mechanism The mold frame, the upper side of the rectangular template having a height of about 5 cm and a width of about 10 cm, which is bent parallel to the upper side, and slidable up and down with respect to the upper plate. A rectangular lower plate connected by a mechanism, and a second form frame composed of two template plates, and adjacent first inner and outer corner sides of a side groove corner portion bent at approximately 45 degrees. The molds are in continuous contact with each other at the end faces. And the side end faces are chamfered so that the second molds are in contact with each other at the side end faces to be continuous,
U type for corners, characterized in that it is erected by fixing a part of the first formwork and part of the second formwork to the inner and outer surfaces of the precast U-shaped concrete gutter located closest to the corner part while abutting them. A gutter free form is provided.

(2) Further, in the corner U-shaped gutter free mold for corners described in (1) above, the first molds on the inner and outer corner side surfaces of the corner are the inner surface of the precast U-shaped concrete gutter. A single mold plate having a height dimension of 30 to 70 cm, which is bent so as to match with the rounded bottom shape and has no step for locking the lid, and a side groove separately from the mold plate. The L-shaped mold has an L-shaped cross-section that models the cross-section of the step portion that locks the lid, and is chamfered so that the mold plate and the corner-side end faces of the L-shaped frame are in surface contact with each other. The present invention provides a U-shaped gutter free form frame for corners.

(3) Further, in the corner U-shaped gutter free formwork according to (1) or (2), the second formwork of the corner side surface and the outside corner side surface of the corner portion has a height dimension of 30. ~ 70cm rectangular plate, width approximately 10c
and an L-shaped mold having an L-shaped cross section with a height of about 5 cm and a height of about 5 cm, and the corners of the rectangular mold plate and the L-shaped mold are chamfered so as to make surface contact with each other. The present invention provides a U-shaped gutter free form frame for corners.

(4) Further, in the U-shaped gutter free form mold for corners according to (1), (2) or (3) above, the outside of the inner corner side and the outer corner side of the precast U-shaped concrete gutter closest to the corner part. A horizontal template that closes the gap between the side surface and each second formwork, one side surface of which is precast U
An upper plate that matches the shape of the outer surface of the concrete groove and has the other side surface that matches the second formwork, and a rectangular lower plate that is vertically slidably connected to the upper plate by a sliding mechanism. A U-shaped gutter free form frame for corners is provided.

(5) In addition, it is a mold for a gutter lid of a U-shaped concrete gutter at a corner portion of the U-shaped concrete gutter bent at an angle of about 45 degrees, and has a width of 30 to 70 cm and a vertical width of 20 to 40 cm. Pre-cast U rectangular plates
The lid bottom formwork having a structure in which the vertical width is slidably connected by a sliding mechanism so as to match the groove opening width dimension of the mold concrete gutter, and the length corresponding to the gutter lid width dimension at a height of about 10 cm is slidable. Provided is a side gutter lid formable frame characterized by comprising a side face form made of a rectangular flat plate whose cross section is bent in an L shape so as to be slidably adjusted by a moving mechanism. is there.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing a state of an example of erection of a U-shaped gutter free form frame for corners according to the present invention.

FIG. 2 is a view showing a state in which the above-mentioned U-shaped gutter for corner free form frame is viewed from the side.

FIG. 3 is a perspective view showing a state of another erection example of a U-shaped side groove movable mold for corners according to the present invention.

FIG. 4 is a view showing a state in which the above-mentioned U-shaped gutter for corner free mold for erection is viewed from the side.

FIG. 5 is a perspective view showing a state of an example of erection of a gutter lid-controllable mold according to the present invention.

FIG. 6 is a view showing an example of the construction of the above-mentioned gutter lid free-form frame as seen from the side.

FIG. 7 is a view showing a state in which the above-mentioned mold for freely controlling the gutter lid is installed from above.

In FIGS. 1 and 2, the corner U-shaped gutter free form frame according to the present invention is an inner-angle side surface K2 and an outer-angle side surface of the corner portion of the precast U-shaped concrete gutter 10 which is bent at an angle θ of about 45 degrees. K1 formwork (formers on the side of the inner corner are omitted), and each side form is bent so as to match the shape of the inner side of the precast U-shaped concrete gutter 10 and is slidable up and down. The first mold frame 15 composed of the two mold plates 13 and 14 connected by the sliding mechanism by fitting the flat screw 11 and the long hole (slit) 12, and the height h on the upper side of the rectangular mold plate are Approximately 5
cm, and a horizontal width y of approximately 10 cm, a top plate 16 bent in parallel to the upper side in a crank-shaped cross-section, and a rectangle slidably connected to the top plate 16 by the same sliding mechanism as above. The lower plate 17 and the second mold frame 18 composed of two mold plates, and the adjacent inner corner side K2 on the inner corner side and the outer corner side of the side groove corner portion bent at about 45 degrees.
So that the first molds of the above are continuous in surface contact with each other at their side end faces (not shown), and the second molds 18 of adjacent outer corner sides K1 are in continuous contact with each other at their side end faces 18a. The side end surface 18a that is in contact is chamfered (for example, chamfering at a corner of 22.5 degrees), and the first mold is formed on the inner surface 10b and the outer surface 10a of the precast U-shaped concrete side groove 10 that is arranged at the position closest to the corner portion. Frame 15 and second formwork 1
It is a structure in which a part of 8 is abutted, and is stretched and pressed by a support 31 or the like to be installed.

After being erected as described above, green concrete is poured into the form from the arrow M to make the bottom surface S of the gutter flat and continuous with the adjacent precast U-shaped concrete gutter 10.

At the time of pouring the fresh concrete (mortar), the precast U-shaped concrete gutter and the second form 18
Fresh concrete leaks through the gap between and.

In order to avoid this, as shown in FIG. 1, the outer surface 10a on the outer corner side and the inner corner side (not shown) of the precast U-shaped concrete gutter 10 closest to the corner portion and the second mold 18 are provided. The horizontal mold plate 35 for closing the gap may be applied and fixed to the second mold frame 18 or the precast U-shaped concrete gutter 10 with a stopper or the like.

The horizontal template 35 has an upper plate 33 whose one side is fitted to the shape of the outer side 10a of the precast U-shaped concrete gutter 10 and the other side is fitted to the shape of the second form (substantially straight). , A rectangular lower plate 34 connected to the upper plate 33 by a sliding mechanism (similar to the above) so as to be slidable up and down.

The crank-shaped cross-section of the second formwork is an empty area provided 5 cm below the upper surface of the gutter in order to secure the thickness covered by the road paving portion in contact with the gutter.

Referring to FIG. 8, a precast U-shaped concrete gutter which is generally used generally has a groove opening width a = 3.
0, 40, 50 cm ···, the width d of the step 2 that locks the lid
5.5 cm, lid thickness c '= 10 cm, groove depth c = 30,
40, 50, 60 cm ..., The thickness of the gutter lid 20 is 10c
Most of the products have a length of m and a length of J = 50 cm.
Since there are many cases where the only difference is each site, the inner and outer surface formwork (first formwork 15, second formwork 18) of the corner portion and the horizontal form plate 35 can be slid up and down as in the present application, thereby increasing the groove depth. If c is about 30 to 60 cm, most of the in-situ casting work can be handled by only preparing one or two types of molds.

Further, the first mold 15 and the second mold 1 of the present invention.
The width of 8 is the length L of the precast U-shaped concrete gutter
Considering that is a minimum of 1 m, 120 cm is sufficient.

In the description of the drawings, the inner side K2 (K2)
Although the formwork of 4) is omitted, the outer corner side surface K1 (K3)
It will be clear that the situation is the same as the erection situation.

Further, since the first mold frame 15 and the second mold frame 18 are composed of two sliding plates, there is a step difference corresponding to the plate thickness in the corner portion completed by the in-situ casting. Is a small size of about 1 to 2 mm, so there is no problem.

Next, another embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

In FIGS. 3 and 4, this corner U
The molds with movable mold gutters are different from each other in the forms of the first mold and the second mold (of course, only one may be different).

That is, the first formwork 40 on the groove side of the inner corner side surface K2 and the outer corner side surface K1 of the corner portion is provided with the bottom surface rounded shape R of the inner surface of the precast U-shaped concrete side groove 10.
The mold plates 41 and 42 each having a height dimension H of 30 to 70 cm, which is formed by bending so as to correspond to the mold plate and the step 2 is not formed, and the gutter lid is engaged separately from the mold plates. The first feature is that the cross-section of the stepped portion 2 to be stopped comprises an L-shaped columnar mold 45, and with respect to the change of the groove depth c of the precast U-shaped concrete side groove 10. , Template 4
This can be achieved by ensuring that the height of 1, 42 is sufficient.
The mold of (1) is configured so as to be formed by an L-shaped columnar mold 45 separately from this (corresponding to claim 2).

Further, the second molds on the outer side surface and the inner side surface (not shown) of the corner portion have height dimensions of 30 to 7.
It is composed of one 0 cm rectangular plate 46 and an L-shaped frame 47 having an L-shaped cross section with a width of about 10 cm and a height of about 5 cm. The rectangular plate 46 and the L-shaped frame 47 are corners, respectively. The second feature is that the side end surfaces 46a and 47a are chamfered so as to make surface contact with each other (corresponding to claim 3).

Of course, the mold plates 41, 42, 46, the columnar mold 45, and the L-shaped mold 47 are not shown, but similar to the above, a part of the support 31 and the precast U-shaped concrete gutter 10 is extended. It is fixedly installed with fasteners.

Next, the molds of the gutter lids 3 and 4 at the corners of the precast U-shaped concrete gutter will be described with reference to FIGS.

In FIG. 5, a lateral width W1 = 30 to 30 is used as a mold for the gutter cover 3 (4) of the U-shaped concrete gutter at the corner portion of the U-shaped concrete gutter which is bent at an angle of about 45 degrees.
Two rectangular flat plates 51, 52 each having a length of 70 cm and a width W2 of 20 to 40 cm are precast U-shaped concrete gutters 10.
The bottom width form 54 having a structure in which the vertical width W2 is slidably connected by a sliding mechanism by fitting the flat screw 11 and the long hole (slit) 12 so as to match the groove opening width dimension a of A rectangular flat plate 55, 56 having two L-shaped cross-sections, the length of which is approximately 10 cm (= c ') and which corresponds to the width dimension W3 of the gutter lid is slidably adjusted by a sliding mechanism. And a side face frame 57 composed of.

Then, after the U-shaped concrete gutters at the corners are completed, the vertical widths of the two bottom molds 54, 54 'serving as the gutter-lid movable molds are adjusted to the groove opening width as shown in FIG. While adjusting to the dimension a and adjusting the corner K5 to the corner K5, adjust the height of the side groove groove depth c with the support 31 so as to fit the lower surface of the lid as shown in FIG. To do.

Further, the side face frame 57 is erected by fixing it with a stopper or the like not shown while adjusting the lateral width of the side face frame 57 to the lateral width W3 of the precast side groove cover 20 while adjusting the side face length dimension to that of the corner side groove cover.

After the formwork construction work described above, concrete is poured to complete the gutter lids 3 and 4 at the corners.

Since the work of constructing the formwork as described above does not require the work of cutting out the form panels such as veneer, the work of constructing the formwork and the subsequent placement of ready-mixed concrete (or mortar) can be performed extremely easily and quickly. .

The finished gutter lids 3 and 4 at the corners have a step (1-2 mm) corresponding to the thickness of the lid bottom molds 54 and 54 ′ whose bottom surfaces are superposed, but the bottom surface is No problem at all.

Further, the corner portion of the side groove is 4 as described above.
It goes without saying that not only the case of bending at 5 degrees but also the case of bending at 45 degrees to 90 degrees can be applied by aligning the inner edges of the chamfered end faces of the universal formwork of the present application.

It should be noted that the material of the mold according to the present invention is not particularly limited, but the thickness is preferably 1 to 2 mm.
Moderate iron plates, aluminum plywood, and other metal plates may be suitable.

If a slight gap is generated in the fitting portion of the mold, it is advisable to use a tape for tensioning.

Although the present invention has been described above with reference to the drawings, it is needless to say that the present invention can be applied not only to the precast U-shaped concrete side groove having the shape shown in the present embodiment but also to various precast U-shaped concrete side grooves. is there.

[0049]

As is apparent from the above description, according to the present invention, when precast U-shaped concrete gutters are constructed, it is easy and quick to construct the molds for the gutters and gutter lids in the in-situ production of corner portions. It is possible to carry out, and it is possible to obtain the effect that the work period can be shortened, the work labor can be reduced, and the construction can be optimized.

Further, since it is not necessary to cut out the mold panel, which is conventionally required, waste of the panel is not discharged and waste is eliminated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state of a erection example of a corner U-shaped gutter free form frame according to the present invention.

FIG. 2 is a view showing a state in which an example of erection of the corner U-shaped gutter free mold for a corner is viewed from the side.

FIG. 3 is a perspective view showing a state of an erection example of another corner U-shaped gutter flexible mold for corners according to the present invention.

FIG. 4 is a view showing a state in which an example of erection of the corner U-shaped gutter free form frame is seen from the side.

FIG. 5 is a perspective view showing a state of an example of erection of a gutter lid-controllable mold according to the present invention.

FIG. 6 is a view showing a state in which a construction example of the frame having a free gutter lid is viewed from the side.

FIG. 7 is a diagram showing a state in which an example of erection of the above-mentioned gutter lid free form frame is viewed from above.

FIG. 8 (A) is a schematic plan view illustrating a situation of a corner portion of the precast U-shaped concrete gutter,
(B) is a figure for demonstrating the vertical cross-sectional shape of a precast U-shaped concrete gutter, and its dimension.

[Explanation of symbols]

 2 Steps for locking the lid 3, 4 Corner gutter lid 10 Precast U-shaped concrete gutter 11 Flat screw 12 Slotted hole (slit) 15, 40 First formwork 18 Second formwork 18a Side end face 20 Precast U-shape Concrete gutter lid 25, 26 Corner U-shaped concrete gutter 31 Support 33 Upper plate 34 Lower plate 35 Horizontal form plate 45 Columnar formwork 47 L-form formwork 54 Lid bottom formwork 57 Side formwork K1 ... Corner angle θ corner Angle of part

Claims (5)

[Claims] 1. A U-shaped concrete gutter, which is a form of an inner side surface and an outer side surface of a corner portion that bends at an angle of about 45 degrees, each side form having a shape of an inner side surface of a precast U-shaped concrete side groove. A first form frame composed of two mold plates that are bent to match and are vertically slidably connected by a sliding mechanism, and the upper side of the rectangular mold plate is approximately 5 cm in height and approximately horizontal in width. Two template plates, an upper plate bent in a 10 cm crank-shaped cross section parallel to the upper side, and a rectangular lower plate slidably connected to the upper plate by a sliding mechanism. A second mold frame configured, and adjacent first mold frames on the inner corner side and the outer corner side of the side groove corner portion that are bent at about 45 degrees so that adjacent first mold frames are in surface contact with each other at their side end surfaces, and continue. The second molds are in contact with each other at the side end faces and are continuous. The side end faces are chamfered so that the first and second molds are fixed while abutting the inner and outer surfaces of the precast U-shaped concrete gutters that are located closest to the corners. U-shaped side gutter free formwork for corners, which is characterized by 2. The U-shaped gutter for corners according to claim 1, wherein the first formwork on the inner side surface and the outer side surface of the corner portion has a bottom rounded shape on the inner side surface of the precast U-type concrete side groove. A single template having a height dimension of 30 to 70 cm, which is bent so as to match and has a step for locking the lid, and the gutter lid is locked separately from the template. The L-shaped cross section that models the cross section of the step
A U-shaped gutter for corners, characterized in that it is chamfered so that the end faces of the L-shaped frame and the corners of the L-shaped frame are in surface contact with each other. 3. The corner U-shaped gutter free mold according to claim 1 or 2, wherein the second molds on the inner corner side surface and the outer corner side surface of the corner portion have a height dimension of 30 to 70.
cm rectangular plate, width approximately 10 cm, height approximately 5
A U for corners, characterized in that it comprises an L-shaped mold having a cm-shaped cross section, and is chamfered so that the end faces of the rectangular mold plate and the corners of the L-shaped frame are in surface contact with each other. Formwork with free mold gutters. 4. The method according to claim 1, 2 or 3.
In the U-shaped gutter for corners described above, a horizontal template that closes the gap between the inner surface of the precast U-concrete groove closest to the corner and the outer surface on the inner corner side and the outer corner side, and one side surface. Is a rectangle that is connected to the shape of the outer surface of the precast U-shaped concrete gutter and has the other side surface fitted to the second formwork, and a slide mechanism that is slidable vertically with respect to the upper plate. A bottom U-shaped gutter free form frame for corners, which comprises: 5. A mold for a gutter lid of a U-shaped concrete gutter at a corner portion of the U-shaped concrete gutter bent at an angle of about 45 degrees, having a lateral width of 30 to 70 cm and a longitudinal width of 20 to 40.
cm bottom rectangular formwork in which the vertical width is slidably connected by a sliding mechanism so as to match the groove opening width dimension of the precast U-shaped concrete gutter, and the gutter cover with a height of about 10 cm And a side surface form made of a rectangular flat plate whose cross section is bent in an L shape so that a length corresponding to the width dimension of the can be slidably adjusted by a sliding mechanism. Formwork with free gutter lid.