JP7406412B2 - Method for raising the height of a square and structure for raising the height of a square - Google Patents

Description

The present invention relates to a method for raising the height of a square and a structure for raising the height of a square.

BACKGROUND ART Conventionally, basins, also called rainwater basins, catchment basins, and drainage basins, have been known. A basin is installed at the confluence point of a drainage ditch such as a U-shaped ditch, and is installed for the purpose of trapping garbage and mud that enters the drainage canal and preventing it from flowing into downstream waterways and pipes. ing.

In recent years, due to the frequent occurrence of heavy rain disasters, when designing waterways, etc., there is an increasing number of cases in which the amount of rainfall per hour is increased compared to the past. At this time, existing waterways are unable to provide the required drainage capacity, and countermeasures are being taken, such as adding new U-shaped grooves or increasing the capacity of the basin.

When increasing the capacity of a basin, it may be possible to replace the existing basin with a larger one, but the basin is often located on slopes or other slopes, and heavy machinery cannot be brought in in many cases. For this reason, it was necessary to remove the existing pits and install new ones manually, which required a great deal of labor.

Furthermore, such boxes are generally made of concrete, which poses a problem that they are heavy and cannot be transported by hand alone. One possible solution to this problem is to install a raised structure on top of the existing basin to increase the capacity of the basin.

Further, Patent Document 1 discloses a water catchment basin 20 that is equipped with a plurality of interval adjustment screws 30 on the upper surface of the precast block 40 to adjust the interval between the precast block 40 and the grating frame 26 (Patent Document 1). (See paragraphs [0017] to [0020] of the specification of No. 1, FIGS. 1 and 3 of the drawings, etc.).

In the water collection basin described in Patent Document 1, the members installed on the concrete frame are fixed to the concrete frame using fixing means such as screws. In this case, there is no problem when newly installed, but when applied to raising the height of an existing concrete pit, the following problems occur.

Existing pits often become brittle due to cracks caused by earth pressure from the surrounding ground and strength reduction due to neutralization of concrete. In particular, concrete pits installed outdoors tend to deteriorate significantly over time. It has become. For this reason, even if a raised structure to increase the capacity of the basin was placed on the frame of the existing basin and then fixed with construction anchors, it could not be secured sufficiently to the frame with deteriorated concrete, and heavy rains caused damage. There was a problem in that the raised structure could come off due to the water pressure of the water flow or the horizontal force during an earthquake.

Japanese Patent Application Publication No. 2010-222895

Therefore, the present invention was devised in view of the above-mentioned problems, and its purpose is to resist water pressure and seismic force during heavy rain even when applied to existing pits with deteriorated concrete. It is an object of the present invention to provide a method for raising the height of a basin and a structure for raising the height of a basin, which can increase the capacity.

The method for raising the height of a square according to the first invention is a method for raising the height of an existing square, which includes a plurality of corner members installed at a corner, and a plurality of raised walls extending vertically and having a plate shape in side view. The corner member is composed of a structure having a flat base plate and pillars erected in advance on the base plate, and the corner member resists the applied water pressure and seismic force with its own weight and increases the capacity of the basin. A structure for raising the height of the trough is placed on the upper surface of the frame of the existing trough.

In the method for raising the height of a basin according to a second aspect of the invention, in the first invention , the base plate of the height raising structure of the basin has a structure that projects outward from the bottom surface , and the lid of the existing basin is placed above the base plate. It is characterized in that the water pressure and seismic force that are applied to the container are counteracted by the weight of the raised structure of the box and the weight of the lid placed thereon.

A method for raising the height of a box according to a third aspect of the present invention is that in the first or second invention, the height raising structure for the hole has a lower leg projecting downward, and the lower leg is attached to the frame of the existing hole. It is characterized in that it is hooked onto the box to prevent the raising structure of the box from moving.

A trough raising structure according to a fourth aspect of the present invention is a trough raising structure for increasing the capacity by raising the height of an existing trough, and is a dry trough raising structure made of a plurality of members that can be assembled at the location where the existing trough is installed. The corner members include a plurality of corner members joined together and installed at the corners, and a plurality of raised wall members that are plate-shaped in side view and extend vertically, and the corner members include a flat base plate and a base plate that is pre-erected on the base plate. It is characterized by having a pillar material provided therein .

A height-raising structure for a box according to a fifth aspect of the present invention is characterized in that, in the fourth invention, the structure has a lower leg that projects downward and is hooked onto the existing box.

A raised structure for a box according to a sixth aspect of the invention is characterized in that, in the fifth invention, the raised wall material is bolted together via the pillar material.

A raised structure for a box according to a seventh aspect of the present invention is characterized in that, in the sixth aspect of the present invention, the raised wall material is bored at a position where a bolt hole to be joined to the column material communicates with the outside.

A raised structure for a box according to an eighth aspect of the present invention is characterized in that, in the fifth aspect of the present invention, the lower leg is bolted to the lower leg via an elongated hole so that its position can be adjusted.

A raised structure for a box according to a ninth invention is characterized in that in any one of the fourth to eighth inventions, the raised wall material has a corrugated cross section.

The raised structure for a box according to the tenth invention is made of stainless steel, highly corrosion-resistant plated steel, or anti-rust treatment such as anti-rust painting or hot-dip galvanizing in any one of the fourth to ninth inventions. It is characterized by being made of steel.

According to the first to tenth inventions, the self-weight of the raised structure can resist the applied water pressure and seismic force, so even if it is applied to an existing pit with deteriorated concrete, it can resist the water pressure and seismic force during heavy rain. It is possible to secure the capacity of the basin to cope with heavy rain. Further, according to the first to tenth inventions, since the raised structure can be installed on the frame of an existing trench by its own weight, no additional construction anchors are required, and the construction period can be shortened. In addition, according to the first to tenth inventions, the raised structure allows the opening surface to rise above the existing basin, making it difficult for dirt to enter the basin even without a lid, and making it difficult for people to enter the basin. There is also less risk of falling. Therefore, a lid is not necessarily required.

In particular, according to the second invention, the applied water pressure and seismic force can be counteracted not only by the weight of the raised structure of the box, but also by the weight of the lid placed on it, so that the connection using post-installed anchors is not required. Even without it, it is more stable and can withstand water pressure and seismic force during heavy rain.

In particular, according to the third invention, the lower legs are hooked to the frame of the existing basin to prevent the raising structure of the basin from moving, so it is possible to more stably withstand water pressure and seismic force during heavy rain. can.

According to the fourth invention, since it is composed of a plurality of members that can be assembled, in addition to the above-mentioned effects, the weight of each member is reduced, allowing manual transportation, and construction can be carried out without heavy machinery. can. Moreover, according to the fourth aspect of the invention, since dry joining is performed, the raised structure can be installed on the existing trench in a short time even if the worker does not have special skills.
In particular, according to the fourth invention, since the corner member is provided with the base plate, the corner member can be made independent, and the corner member can be easily set on an existing box. Therefore, construction can be carried out in a short time, and the raised structure can be constructed by one person, and the cost of installation work can be reduced.

In particular, according to the fifth invention, even if water pressure or seismic force due to heavy rain acts on the raised structure, the lower legs come into contact with the inner surface of the existing basin, so that the raised structure does not shift or fall. , the installation can be maintained stably on top of the existing trench.

In particular, according to the sixth invention, since it can be assembled by bolt connection, the raised structure can be easily assembled without requiring special skills.

In particular, according to the seventh invention, the bolt holes of the raised wall material are drilled at positions that communicate with the outside, so when connecting the raised members, the bolts are inserted from the outside side of the temporarily assembled raised wall material. It can be bolted together, improving workability.

In particular, according to the eighth aspect of the invention, the lower legs are bolted together via the long holes so that their positions can be adjusted, so even if the existing pit has cracks or deformation due to deterioration, it can be adjusted to fit the existing ditch. The position of the lower legs can be adjusted, and it can also withstand water pressure and seismic forces during heavy rain.

In particular, according to the ninth invention, since the cross section of the raised wall material is formed in a wave shape, the cross section performance is improved and it becomes difficult to deform even when water pressure is applied.

In particular, according to the tenth invention, the durability of the raised structure is improved.

FIG. 1 is a perspective view showing a structure for raising the height of a box according to an embodiment of the present invention. FIG. 2 is a plan view showing the raised structure of the same box. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. FIG. 4 is a perspective view showing a corner member of the box raising structure according to the embodiment of the present invention. FIG. 5 is a front view showing the corner member same as the above. FIG. 6 is a plan view showing the corner member same as above. FIG. 7 is a perspective view showing a raised wall material of a raised structure for a box according to an embodiment of the present invention. FIG. 8 is a vertical sectional view showing the raised wall material same as above. FIG. 9 is a perspective view showing the lower leg of the box raising structure according to the embodiment of the present invention. FIG. 10 is a rear perspective view showing the lower leg same as above.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for raising the height of a square and a structure for raising the height of a square according to an embodiment of the present invention will be described in detail with reference to the drawings.

[Elevated structure of the box]
First, a height raising structure for a box according to an embodiment of the present invention will be explained using FIGS. 1 to 10. FIG. 1 is a perspective view showing a structure for raising the height of a box according to an embodiment of the present invention. However, bolts and nuts are omitted. Further, FIG. 2 is a plan view showing a raised structure for a box according to the present embodiment, and FIG. 3 is a sectional view taken along the line AA in FIG. 2.

A box raising structure 1 (hereinafter also simply referred to as a raising structure) according to an embodiment of the present invention is a box-shaped structure made of a plurality of assembleable members joined by dry joining such as bolt joining. The elevating structure 1 is installed on the upper surface of the frame of an existing cell without being connected to the frame, and has the function of elevating the existing cell to increase its capacity. Here, dry bonding is intended to exclude welding that requires special skills and wet bonding that requires time to cure, such as adhesives, and in this embodiment, bolts and nuts are used as shown in FIGS. 2 and 3. Bolted together.

In addition, since the raised structure 1 is made up of a plurality of members that can be assembled, the weight of each member is light, and it can be easily transported manually to the location where the existing pit is installed, and it can be constructed without heavy machinery. be able to. Moreover, since the raised structure 1 is joined by dry joining, it can be constructed in a short time.

Further, as shown in FIGS. 1 to 3, the raised structure 1 includes a plurality of corner members 2 installed at the corners, and a plate-shaped raised wall material extending vertically between the corner members. 3 and a plurality of lower legs 4 that protrude downward (in the illustrated embodiment, there are four legs each). These constituent members are all made of steel materials with high specific gravity and heavy weight, and are configured to be able to withstand the water pressure and seismic force acting on the raised structure 1 during heavy rain due to the own weight of the raised structure 1.

Therefore, the raised structure 1 does not need to be connected to an existing cage, which was necessary in the past. Therefore, the raised structure 1 solves the problem described in the background art that even if it is fixed to the concrete frame of an existing pit using post-installed anchors, it cannot be sufficiently fixed to the frame where the concrete has deteriorated. can do. In other words, the raised structure 1 can solve the problem of the raised structure coming off due to its own weight, water pressure of water flow during heavy rain, or horizontal force during an earthquake.

Furthermore, the above-mentioned corner members 2, raised wall materials 3, and lower legs 4 that constitute the raised structure 1 are all made of steel materials that have been subjected to anti-rust treatment such as anti-rust painting or hot-dip galvanizing. For this reason, the raised structure 1 has a predetermined weight as described above, has high strength and is resistant to rust, and thus has improved durability. Of course, these steel materials may also be stainless steel materials or highly corrosion-resistant plated steel materials, which have a higher rust prevention effect.

<Corner member>
Next, the corner member 2 will be explained in detail using FIGS. 4 to 6. FIG. 4 is a perspective view showing the corner member 2 of the box raising structure 1 according to the embodiment of the present invention, as seen from the inside. Moreover, FIG. 5 is a front view showing the corner member 2 when viewed in a direction perpendicular to the side surface of the angle iron. FIG. 6 is a plan view showing the corner member 2. As shown in FIG.

As shown in FIGS. 4 to 6, the corner member 2 is mainly composed of a rectangular flat base plate 20 and a pillar 21 erected approximately at the center of the base plate 20. As shown in FIGS. The base plate 20 and the pillar 21 are vertically welded in advance at a factory or the like so that the plate surface of the base plate 20 and the side surface of the pillar 21 are perpendicular to each other.

(base plate)
The base plate 20 is made of a rectangular flat steel plate, as shown in FIG. A hole 22 is formed. Further, as shown in FIG. 6 and the like, the base plate 20 is also formed with an anchor hole 23 for connecting to the frame of an existing drainage basin.

As described above, the raised structure 1 is designed to resist the water pressure and seismic force that act on the raised structure 1 during heavy rain by its own weight without being connected to an existing pit. Therefore, the anchor hole 23 may be omitted. However, if the box in which the raised structure 1 is installed is a new one, or if a female thread for an anchor is already installed, the anchor hole 23 may be used to connect it to the box. This is because the raised structure 1 can withstand higher water pressure and seismic force.

(pillar material)
In the illustrated form, the pillar material 21 is made of angle steel (angle steel material) with a horizontal cross section of 75 mm x 75 mm and an L-shape, and the raised wall material 3 is bolted to each side as shown in FIGS. 4 and 5. A plurality of bolt holes 24 (four in the illustrated embodiment) are bored for joining. These bolt holes 24 are vertically elongated long holes so that the height can be adjusted.

Furthermore, as shown in FIGS. 4 and 6, a pair of upper and lower triangular reinforcing ribs 25 are provided on the inside corner side of the angle iron in order to counter the buckling stress acting on the column 21.

<Raised wall material>
Next, the raised wall material 3 will be explained in detail using FIGS. 7 and 8. FIG. 7 is a perspective view showing the raised wall material 3 of the box raising structure 1 according to the embodiment of the present invention, as seen from the inside. Moreover, FIG. 8 is a vertical sectional view showing a state in which the raised wall material 3 is cut along a central vertical plane.

As shown in FIG. 7, the raised wall material 3 is a plate-shaped member in a side view that extends vertically, and has the function of raising the existing wall upward. As shown in FIGS. 7 and 8, this raised wall material 3 includes a corrugated steel plate 30 having a corrugated vertical cross section, an upper flange 31 and a lower flange 32 where the upper and lower sides of the corrugated steel plate 30 are folded back, and a corrugated steel plate 30 having a corrugated vertical cross section. It is composed of edge plates 33 and 34 attached to the left and right side surfaces of the steel plate 30.

As shown in FIG. 7, the upper flange 31 and the lower flange 32 are provided with a plurality of circular bolt holes 35 for connecting the raised wall material 3 vertically.

Furthermore, circular bolt holes 36 are bored in each of the edge plates 33 and 34 to be bolted to the bolt holes 24 of the pillar material 21. As shown in FIG. 8, this bolt hole 36 is bored at a position communicating with the outside when the raised wall material 3 is assembled in a box shape. That is, the bolt holes 36 are formed in the valleys when the corrugated steel plate 30 is viewed from the outside.

Therefore, when performing the bolt tightening work, the work can be done from one side of the outer surface of the temporarily assembled raised wall material 3, and there is no risk of bolts or nuts accidentally falling into the existing box. For this reason, the workability when assembling the raised structure 1 by bolting is significantly improved.

<Lower legs>
Next, the lower leg 4 will be explained in detail using FIGS. 9 and 10. FIG. 9 is a front downward perspective view showing the lower leg 4 of the box raising structure 1 according to the embodiment of the present invention, looking down from the outside. Further, FIG. 10 is a rear perspective view showing the lower leg 4 looking up.

As shown in FIGS. 9 and 10, the lower leg 4 is mainly made of an angle steel 40 (angle steel material) with an L-shaped horizontal cross section of 75 mm x 75 mm, and a rectangular steel is provided near the upper end of the angle steel 40. A shaped top plate 41 is attached. This top plate 41 has a circular bolt hole 42 that is bolted to the elongated hole 22 of the base plate 20 described above.

[How to raise the height of the box]
Next, a method for raising the height of a box according to an embodiment of the present invention will be explained mainly using FIGS. 1 to 3. The case where the above-mentioned raising structure 1 is installed in an existing concrete pit (not shown) will be explained as an example.

(Transportation of component parts)
In the method for raising the height of a trench according to the embodiment of the present invention, first, the constituent members of the raising structure 1 are carried to a location where an existing trench is installed. At this time, the raised structure 1 is divided into a plurality of members consisting of four corner members 2, four raised wall members 3, and four lower legs 4 and transported (see FIGS. 1 to 3). . As a result, the weight of each member is reduced, making it possible to transport it manually, and it can be transported and assembled without heavy equipment.

(Removal of the lid of the existing pit)
Next, as a preliminary preparation, the concrete lid of the existing basin will be removed. After cleaning the frame of the existing basin, the above-mentioned raised structure 1 is constructed and placed on the upper surface thereof.

(Corner member erection process)
In the method for raising the height of a box according to the embodiment of the present invention, a corner member erecting step is performed in which corner members 2 are erected near the four corners that are the protruding corners of the rectangular frame of the existing box. At this time, the base plate 20 is attached to the corner member 2 in advance as described above, and the corner member 2 can stand on its own (see FIG. 4).

Therefore, in this step, the corner member 2 can be easily set on the existing box. Therefore, the working time of this step can be shortened, and the raised structure 1 can be constructed by one person, and the cost of installation work can be reduced.

(Temporary fixing process for raised wall materials)
Next, in the method for raising the height of a box according to the embodiment of the present invention, the raised wall material 3 is inserted between the corner members 2 erected in the previous step, and bolts are inserted into the bolt holes 36 and the bolt holes 24. The nuts are temporarily tightened and the raised wall material is assembled into a square shape (see Figures 1, 4, and 7).

At this time, the bolt hole 24 has a vertically elongated shape as shown in Fig. 4, so even if the existing trench is sloped, the height can be adjusted according to the slope of the existing trench. Then, the raised structure 1 can be temporarily assembled.

(Lower leg installation process)
Next, in the method for raising the height of a box according to the embodiment of the present invention, a lower leg attaching step is performed to attach the lower legs 4 below the plate surface of the base plate 20 of the corner member 2 (see FIGS. 1 to 3). At this time, a bolt is inserted into the elongated hole 22 and the bolt hole 42, and is tightened and fixed with a nut.

In this step, the position of the lower leg 4 is adjusted and fixed by using the long hole 22 along the diagonal line of the base plate 20 so that the outer corner of the lower leg 4 is in contact with the inner corner of the frame of the existing box (Fig. 2 , see Figure 6). At least, the position of the lower leg 4 is adjusted so that one side of the angle iron 40 comes into contact with the inner surface of the existing pit, and the lower leg 4 is hooked to the frame of the existing pit to prevent the movement of the raised structure 1. To prevent. Note that this step may be performed simultaneously with the raised wall material temporary fixing step.

(Final tightening process)
Next, in the method for raising the height of a box according to the embodiment of the present invention, a final tightening step is performed in which the bolts and nuts temporarily tightened in the raising wall material temporary fixing step are tightened with a predetermined torque. Upon completion of this process, the raised structure 1 is assembled and placed on the upper surface of the frame of the existing trench, and the capacity of the existing trench is equal to the capacity enclosed by the raised wall material 3, etc. of the raised trench 1. The capacity of the basin will increase accordingly.

Further, as described above, the raised structure 1 is designed to be able to withstand the applied water pressure and seismic force by its own weight. Therefore, in the method for raising the height of a trench according to the embodiment of the present invention, the raising structure 1, which increases the capacity of the trench by counteracting the applied water pressure and seismic force with its own weight, is mounted on the upper surface of the frame of the existing trench. will be placed.

(Lid mounting process)
Next, in the method for raising the height of a trench according to the embodiment of the present invention, the lid of the existing trench removed in advance preparation is placed above the base plate 20 (see FIG. 1) extending outside of the raising structure 1. Perform the lid mounting process. Through this step, the applied water pressure and seismic force can be counteracted by the weight of the raised structure 1 and the weight of the existing lid placed thereon. Therefore, it is possible to stably resist water pressure and seismic force during heavy rain without connecting the frame of the existing pit and the raised structure 1 using post-installed anchors.

According to the structure for raising the height of a box and the method for raising the height of a wall according to the embodiment of the present invention described above, it is possible to resist the water pressure and seismic force acting due to the own weight of the height-up structure 1. Therefore, even if it is applied to an existing pit with deteriorated concrete, it can withstand water pressure and seismic force during heavy rain, and the capacity of the ditch can be secured to cope with heavy rain.

Moreover, according to the structure for raising the height of a square and the method for raising the height of a square according to the embodiments of the present invention, post-installation anchors are not required, and the construction period can be shortened.

In addition, according to the structure for raising the height of a square and the method for raising the height of a square according to the embodiment of the present invention, the opening surface rises above the existing square due to the raising structure 1. Not only does it make it harder for trash to get in, but it also reduces the risk of people falling into the basin. Therefore, a lid is not necessarily required.

Furthermore, according to the structure for raising the height of a trench and the method for raising the height of a trench according to the embodiment of the present invention, even if water pressure or seismic force due to heavy rain acts on the height raising structure, the lower legs 4 contact the inner surface of the existing trench. By contacting them, the raised structure 1 will not shift or fall. Therefore, the state in which it is stably installed on the top surface of the existing basin is maintained.

As above, the structure for raising the height of a square according to the embodiment of the present invention and the method for raising the height of a square according to an embodiment of the present invention have been explained in detail. This is merely an illustration of one specific embodiment. Therefore, the technical scope of the present invention should not be construed as being limited by these.

1: Raised structure (raised structure of the box)
2: Corner member 20: Base plate 21: Pillar material 22: Long hole 23: Anchor hole 24: Bolt hole 25: Reinforcement rib 3: Raised wall material 30: Corrugated steel plate 31: Upper flange 32: Lower flange 33, 34: Edge plate 35, 36: Bolt hole 4: Lower leg 40: Angle steel 41: Top plate 42: Bolt hole

Claims (10)

A method for raising the height of an existing trench,
The corner member includes a plurality of corner members installed at a corner portion and a plurality of raised wall members that are plate-shaped in side view and extend vertically, and the corner member includes a flat base plate and a column erected in advance on the base plate. A trough raising structure, which increases the capacity of the trough by counteracting the applied water pressure and seismic force with its own weight, is placed on the top surface of the existing trough frame. A distinctive method of raising the height of the pond. The base plate of the raised structure of the box has a structure that projects outward from the bottom surface ,
The lid of the existing basin is placed above the base plate, and the applied water pressure and seismic force are counteracted by the weight of the raised structure of the basin and the weight of the placed lid. The method for raising the height of a box according to claim 1. The raised structure of the box has lower legs projecting downward,
The method for raising the height of a square according to claim 1 or 2, characterized in that the lower legs are hooked to the frame of the existing square to prevent the height raising structure of the square from moving. A structure for raising an existing pit to increase its capacity,
Dry-jointed from multiple parts that can be assembled at the location where the existing basin is installed ,
A plurality of corner members installed at a corner portion and a plurality of raised wall materials that are plate-shaped in side view and extend vertically,
The corner member may include a flat base plate and a pillar member erected in advance on the base plate.
A raised structure for a box characterized by the following. The structure for raising the height of a basin according to claim 4, further comprising lower legs projecting downward and hooked onto the existing basin. The raised wall structure according to claim 5 , wherein the raised wall material is bolted together via the pillar material. 7. The raised wall structure according to claim 6 , wherein the raised wall material is provided with a bolt hole that is connected to the pillar material at a position that communicates with the outside. The structure for raising the height of a box according to claim 5 , wherein the lower leg is bolted to the lower leg via an elongated hole so that its position can be adjusted. The raised wall structure for a box according to any one of claims 4 to 8, wherein the raised wall material has a corrugated cross section. The raised structure for a pit according to any one of claims 4 to 9 , characterized in that it is made of stainless steel, highly corrosion-resistant plated steel, or steel that has been subjected to anti-rust treatment such as anti-rust coating or hot-dip galvanizing. .

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