JPH07197511A - Foundation forming formwork for street drain - Google Patents

Abstract

PURPOSE:To correctly place the base concrete through one time operation by suspending an interval holding member having a water system height adjusting bolt, on the opposed assembly frames and forming a foundation forming form for the free slope type street drain. CONSTITUTION:An assembled form D is constituted by connection-fixing the upper surface 2-1 of a subform B having a horizontal U-shaped section on the outside of the bottom surface 1-2 of a long main form A having a U-shaped section, by bolts. The assembled forms D and D are installed oppositely, keeping the interval corresponding to the width of an arranged side groove, and fixed by striking tackes 20 on a foundation ground G which is constituted of the crushed stones and sand grains. A foundation forming form for the construction of a street drain is formed by laying an interval holding member 3 having a bolt 4 for adjusting the water system height installed, at a proper place in the longitudinal direction of the upper surface of a main form A. In the formation of the foundation body, concrete C is placed between the assembled forms D and D which are arranged oppositely, and the surface of the inverter concrete is formed according to the level of the water system which is formed between the water system height adjusting bolts D and d and shows the drain gradient.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a free-slope type foundation forming mold for road gutters, which has an opening for attaching a lid on the upper surface and has an open bottom surface.

[0002]

2. Description of the Related Art Conventionally, in the construction of this type of free-gradient type gutter, since the entire bottom surface of the gutter block is open, a base concrete for installing the gutter block is placed on the foundation ground such as crushed stone or sand. It is necessary to place invert concrete for securing the drainage gradient and maintaining the strength of the open part twice after installing the gutter block on it. It was complicated and time-consuming to construct.

[0003]

This casting of invert concrete has a narrow width due to the work in the gutter block, and black line drawing for adjusting the height of the finished surface at a deep place, and compaction of the concrete. However, it was extremely difficult due to the work such as finishing according to the slope of the waterway. In particular, the placement of concrete in accordance with the drainage gradient is a difficult work because the working conditions are bad despite the demand for accuracy, and this solution has been desired.

For this reason, in pouring the invert concrete, various means such as an automatic pouring machine filed by the applicant before the present application have been developed, but large-scale equipment is required, and moreover, in the curved part and the corner. It was unsuitable for use, and I had to resort to the conventional double strike.

[0005]

The present invention was developed in order to solve this problem. A dedicated mold is used, and a water thread adapted to the drainage gradient is stretched in the mold by adjusting bolts. Before placing the gutter block with this water thread, the base concrete and the invert concrete that matches the drainage gradient are cast integrally, and then the gutter block is placed on this molded foundation to form the gutter water channel. To build.

[0006]

[Action] Therefore, since the invert concrete is placed in accordance with the drainage gradient formed by the water thread, it is possible to place the concrete accurately in the formwork whose upper part is open, and it is extremely smooth. You can

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The formwork of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view showing the structure of a mold of the present invention, and FIG. 2 is a view showing an embodiment of a gutter block VS arranged on a foundation formed by the mold of the present invention. Concrete C that forms the bottom of the gutter is cast.

In FIG. 1, (1) is a long member having an L-shaped cross section, which is a main formwork A formed by an upright portion (1-1) and a bottom portion (1-2). According to 1-1), the thickness of the invert concrete is formed by the water threads forming the drainage gradient. B indicates a sub formwork. This sub-frame B is a long member having a U-shaped cross section and has an upper surface (2-
1), an upright portion (2-2), and a bottom portion (2-3), which are connected and fixed to the outside of the bottom portion (1-2) of the main formwork A by bolts or the like to form one assembly form D. Is formed,
Therefore, the vertical portion (2-2) forms the thickness of the base concrete. In using the assembly form D, two sets of assembly form D, D are arranged to face each other as shown in the figure.

As shown in FIG. 2, the space between the facing mold forms D, D is a gutter block VS arranged on the upper part after the foundation is constructed.
The spacing is equivalent to the inner width of the side wall. Further, a spacing member (3) is provided on the upper surfaces of the main molds A, A to prevent movement of the assembled mold D. And this spacing material (3)
A water thread (6) for setting a drain gradient and a bolt mechanism (4) for adjustment, which will be described later, are mounted on the.

3 to 8 are detailed explanatory views of the main form A and the sub form B, FIG. 3 is a cross-sectional view of a long main form having an L-shaped cross section, and FIG. 4 is a side view. , FIG. 5 shows plan views, respectively. In the figure, reinforcing ribs (10) and (11) are provided at appropriate positions on both ends and an intermediate portion of the form material (1), and the ribs (10) on the end side are connected with connecting holes (12) for connecting adjacent frames. ) Is provided, and the rib (11) in the middle is provided with a protrusion, and a bolt hole (13) for joining a sub-frame, which is additionally provided, is provided.

FIG. 6 is a sectional view of an elongated sub-frame having a U-shaped cross section, FIG. 7 is a side view, and FIG. 8 is a plan view. In the figure, a bolt hole (1) for joining the main mold A is formed on the upper surface (2-1) of the mold material (2) having a U-shaped cross section.
A plurality of 5) and (15) are provided side by side. Further, a protrusion is provided on the lower surface of the form material (2), and a hole (16) into which the tack (20) is driven is formed in the foundation ground for fixing the form at the tip thereof. Bolt holes (17) for connecting the mold members of the same shape, which are superposed and arranged to adjust the height of the concrete to be cast, are provided at both ends of the mold member (2) in the longitudinal direction.

FIG. 9 et seq. Illustrates a formwork mechanism using the formwork of the present invention to build a foundation for a road gutter. In the figure, for the sake of convenience, only one of the assembling molds D shown in FIG. 1 will be described, but in reality they are installed facing each other.

FIG. 9 shows a structure of a formwork for placing standard invert concrete and base concrete thickness, in which a main formwork A and a subformwork B are formed on a foundation ground G composed of crushed stone and sand grains. Installed in combination with bolts, the tack (20) is driven into the foundation ground G using the tack driving hole (17) of the sub-frame B to fix the frame,
Further, in order to prevent the formwork from tilting, the rising part (2
The pillow block M corresponding to the height of -2) is applied.

Then, the spacing member (3) having the width regulation is suspended on the opposing formwork. The spacing member (3) is provided with a bolt mechanism (4) for adjusting the height of the water thread (6). With respect to the bolt mechanism (4), referring to FIG. 15, a water thread (6) is stretched according to the drainage gradient. The adjusting bolt (4) in the figure is screwed into the spacing member (3), and there is a water thread at the tip of this bolt, so that concrete C can be placed while forming a drainage gradient on the invert concrete C surface. is there.

FIG. 10 shows a formwork for forming a foundation for a wide gutter block having the same basic concrete thickness as that of FIG. 9, and when the main formwork A and the subformwork B are joined, the subformwork B is used. FIG. 9 is an embodiment diagram in which a combined mold set is formed by bolts in a joint hole (15) on the outside of the mold member (2) of FIG.

FIG. 11 shows that the thickness of the base concrete is 2
FIG. 10 shows a doubled mold assembly configuration, in which two sub-molds B are combined and combined with respect to FIG. 9, and therefore the pillow block M used as a support for the mold has a double thickness, Two M's are stacked and used. FIG. 12 shows a mold assembly configuration in which wide gutter blocks are arranged, as in FIG.

In FIG. 13, the thickness of the base concrete is 3
It shows a double mold combination structure, and in addition to the sub-mold B to be used, a sub-mold C having a height twice that of this sub-mold is polymerized to form a mold set. Therefore, the pillow block that supports the formwork has the specified height and the pillow block M- that is twice as high.
Use 1. And FIG. 14 shows a formwork structure in which a wide gutter block is arranged.

The formwork of the present invention is constructed as described above, and when forming the foundation body, referring to the drawings, one or two pillow blocks are formed on the foundation ground G made of crushed stone or sand with respect to the assembled formwork D. Are placed side by side, and the assembling molds D, D are arrayed on top of each other, and concrete C is put into the form and compacted. At this time, a water thread showing a drainage gradient is stretched by an adjusting bolt (4) on the inner surface of the standing portion (1-1) of the main formwork (1), and the invert concrete is adjusted to the level of the water thread. By forming the surface of, we get an exact graded plane,
This plane is formed as the bottom surface C-2 of the sloped side groove B which will be described later.

When the form A is removed after the cast concrete C has solidified, the stepped concrete foundation C shown in FIG. 2 is formed. Therefore, the gutter block VS shown by an imaginary line is placed on the concrete foundation C to form a gutter water channel. C-1 in the figure is a gutter block VS
C-2 is an invert concrete that constitutes the bottom plate of the gutter block B, and the drainage gradient is formed as described above. Also C-3
Shows the mortar filling the gap between the basic concrete and the gutter block.

[0020]

INDUSTRIAL APPLICABILITY The present invention is a dedicated formwork for forming a base concrete and an invert concrete by one-time concrete pouring, in which the laying gradient and drainage gradient of the gutter can be freely set, and the gutter is narrow and deep. Even if it is a formwork, it is possible to place concrete on the bottom plate, so it is possible to place concrete accurately, work can be carried out smoothly and easily, and work excellence is achieved when working on curved parts, corner parts or at short distances. Produces the effect.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a mold of the present invention.

FIG. 2 is a sectional view showing an embodiment in which a gutter block B is arranged.

FIG. 3 is a sectional view of the main formwork member.

FIG. 4 is a side view of the main formwork member.

FIG. 5 is a plan view of the main formwork member.

FIG. 6 is a sectional view of a sub formwork member.

FIG. 7 is a side view of the sub formwork member.

FIG. 8 is a plan view of a sub formwork member.

FIG. 9 is a block diagram of the assembled formwork.

FIG. 10 is another configuration diagram of the assembly form.

FIG. 11 is another configuration diagram of the assembly form.

FIG. 12 is another configuration diagram of the assembly formwork.

FIG. 13 is another configuration diagram of the assembly formwork.

FIG. 14 is another configuration diagram of the assembly form.

FIG. 15 is an explanatory view of a water thread adjusting bolt mechanism.

[Explanation of symbols]

 (1) ... Main formwork member (2) ... Sub formwork member (3) ... Spacing material (4) ... Water thread height adjusting bolt (6) ... Water thread (20) ... Formwork holding tack

Claims (3)

[Claims] 1. A set form D is constructed by connecting and fixing a long sub form B having a U-shaped cross section to the outside of the bottom surface of a long main form A having an L-shaped cross section. A space holding member (3) having water thread adjusting bolts mounted at appropriate positions in the longitudinal direction on the upper surface of the main mold A is installed so as to face each other at intervals corresponding to the width of the gutter block in which the mold is arranged. Forming formwork for road gutters characterized by. 2. Reinforcing ribs are provided at appropriate positions at both ends and an intermediate portion of a long form material having an L-shaped cross section, and a connecting hole for connecting an adjacent frame is bored in the rib on the end side to form an intermediate portion. Of the reinforcing rib, the main form frame A provided with a bolt hole for joining the sub form frame B separately attached to the projecting part, and the main form frame on the upper surface of the form material molded in a U-shaped cross section. A plurality of bolt holes for joining A are installed side by side, and holes for tacking for fixing the assembled form are formed at the tip of the bottom surface of the formwork, and the height of the concrete is set at both ends in the longitudinal direction of the U-shaped formwork material. And a sub-form B having holes for connecting form members of the same type, which are superposed for adjusting the height,
The assembled formwork according to claim 1, wherein the main formwork A and the subformwork B are joined together. 3. The mold assembly according to claim 1 or 2, wherein a sub form B having a U-shaped cross section is joined to the main form A by using a sub form C in which the height of the U-shaped portion is doubled. frame.