JPH0841842A - Built-up channel - Google Patents

Abstract

PURPOSE:To obtain a built-up channel capable of being built in a short construction period by constituting the built-up channel of main body blocks with a U-shaped vertical section adjoining in longitudinal direction, an intermediate bottom face plate and an intermediate upper face plate. CONSTITUTION:In a built-up channel, support plates 3 are continuously provided to a bottom face plate 1 and one end of upper face plates 2 having the approximately same plane shape at right angles, sheaths 9 of PC steel materials are buried in two places up and down in a longitudinal direction, and main body blocks 4 burying sheaths 10 of PC steel materials in the lower end on either direction and adjoining in a longitudinal direction are used as the main constitutional elements. After that, the blocks 4 having required size corresponding to the volume of water are adjoined in a longitudinal direction and are buried, a bottom open section 5 between both right and left blocks 4 and 4 is blockaded with a cast-in-place intermediate bottom face plate 6, an upper surface open section 7 is blockaded with a cast-in-place intermediate upper face plate 8, and PC steel materials 30 passing through the sheaths 9 and sheaths 10 are tightly bound and are fixed with fixed members 31 and 32 to fix constitutional blocks to each other. According to the constitution, after the volume of water in the channel is adjusted, it is not necessary to manufacture the blocks, and a construction period can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground or semi-underground culvert type or open channel type assembly type water channel for controlling flood water such as rainwater, domestic wastewater, industrial water, agricultural water, etc. is there.

[0002]

2. Description of the Related Art In recent years, with the increase of buildings and the increase of pavement ratio on the surface of the earth, rainwater cannot penetrate underground and flows into sewers and rivers at a time when a large amount of rainfall occurs. Occurs. For this reason, techniques for underdrain or open channel water channels have been developed so that rainwater can be efficiently drained even when a large amount of rainfall occurs.

As such an underdrain-shaped or open-drain type waterway, there is one in which blocks having a U-shaped vertical section formed of concrete or the like are installed adjacent to each other in a row. In some cases, an underdrain-shaped water channel is formed by closing the open top surface with an intermediate top plate. Alternatively, there is also an underdrain-shaped waterway constructed by arranging adjacent blocks in a row with a rectangular cross section having concrete as a component. Further, when installing the underdrain type and the opendrain type, a formwork or the like may be directly attached to the installation place in the shape of the underdrain or the opendrain, and may be cast on site using concrete or the like.

However, with such a construction method,
In installing an underdrain or open channel, the amount of water flowing through the underdrain or open channel must be taken into consideration to fabricate a block to be used for the underdrain or open channel. As a matter of course, after the construction order is received, the blocks required for the installation of the underdrain or open channel canal are manufactured, so the construction period becomes long.

Further, in the case of laying a large-scale underdrain or open-ditch type waterway, the block required for the laying work becomes very large. A large specialty car is needed to transport it to. This naturally leads to an increase in cost for transportation, and a large crane is used for the laying work. Therefore, a sufficient space is required for the laying work, and the construction cost is increased.

Further, when a formwork or the like is provided directly in the construction site in the shape of an underdrain type or open channel type waterway, and when laying on site by concrete or the like, the formwork or the like must be installed. Since it does not happen, it naturally leads to higher costs. Also,
Scaffolding is required to do the work, which also increases costs.

[0007]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to lay a building block in a short period of time, and even in the construction work of a large-scale underdrain type or open channel type water channel, the building blocks are easy to transport and when laying. It is to provide a prefabricated waterway that can be installed in a small space.

[0008]

The following is a description with reference to the reference numerals in the accompanying drawings. As a basic constituent element of the underdrain-shaped prefabricated water channel of the present invention, the bottom plate portion 1 having the same or similar planar shape is used. And the support plate portion 3 are vertically connected between one end of the upper plate portion 2 and the upper plate portion 2, the PC steel sheath 9 is embedded in the front and rear direction at two upper and lower positions, and the PC steel sheath 10 is left and right on the bottom plate portion 1. There is a main body block 4 having a U-shaped vertical cross section that is embedded in the direction, and the main body blocks 4 are adjacent to each other and joined to each other in the front-back direction.

In order to close the bottom opening 5 between the bottom plates 1, 1 of the left and right main body blocks 4, 4, a precast or cast-in-place intermediate bottom in which a sheath of PC steel is buried in the left and right direction. A face plate 6 is prepared and placed on the ends 2a, 2a of the upper surface plates 2, 2 of the left and right main body blocks 4, 4 to close an upper surface opening 7 between the upper surface plates 2, 2. An intermediate top plate 8 is provided, and the constituent blocks are fixed to each other.

In the open channel assembling type water channel according to the present invention, the side plate portion 19 is connected at a right angle between one end portions of the bottom plate portion 20 having the same or similar planar shape, and the main body block 21 is provided.
A block 21 for a main body portion having an L-shaped vertical cross section in which a sheath 22 of a PC steel material is embedded in the front-rear direction at two upper and lower positions and a sheath 23 of a PC steel material is embedded in the bottom plate portion in the left-right direction is used as a basic element, The main body block 21 is fixed adjacent to each other in the front-rear direction. Left and right body block 21,
The bottom surface open portion 24 between the bottom plate portions 20, 20 of 21 is closed by a precast or field cast intermediate bottom surface plate 25 in which a sheath of PC steel is embedded in the left-right direction, and the constituent blocks are connected to each other.

Further, the upper surface plate portion 2a of the block 4 for the main body portion
When the nut and the intermediate upper plate 8 are fixed to each other, the nut-type insert 11 is embedded and fixed in the upper plate 2a.
Is provided with a tapered through-hole 12 whose diameter is reduced from the upper surface side to the lower surface side, and a bolt 13 inserted into the through-hole 12 is screwed and fixed to the nut-type insert 11, and fitted and fixed in the middle of the bolt 13, and a horizontal pressure-resistant plate is fixed. The mortar 15 is filled in the through hole 12 so as to surround the hole 14 and is rigidly connected.

[0012]

[Operation] Main body blocks 4 of a required size are aligned in a straight line in the front-rear direction so as to correspond to the site area and the amount of water, and a predetermined interval is set between the left and right main body block rows. To be done. The bottom opening 5 between the left and right blocks 4 and 4 for the body is an intermediate bottom plate 6 that is precast or cast on site.
The upper open part 7 is closed by the intermediate upper plate 8, and the PC steel materials 30 passed through the sheath 9 in the front-rear direction and the sheath 10 in the left-right direction of the main body block 4 are tensioned to fix the fixing member 31.
And 32, the constituent blocks are fixed to each other.

As a result, an underdrain-shaped prefabricated water channel corresponding to the required amount of water is formed. At the time of assembly and construction, the upper surface plate portions 2 and 2a of the main body block 4 are used as a scaffold for workers and a storage place for tools and the like. Here, by providing drainage grooves for rainwater or the like in the support plate portion 3 and the intermediate upper surface plate 8, rainwater or the like can be guided into the inside of the waterway, and by providing a gradient to the waterway, the rainwater or the like is drained to a target place. Can be.

[0014]

1 to 4, the main body block 4 and the intermediate top plate 8 are made of reinforced concrete, and the intermediate bottom plate 8 is cast on site or given as a precast member. To be The end portion 2a of the upper surface plate portion 2 of the main body block 4 is formed in a stepped shape lower by the thickness of the intermediate upper surface plate 8, so that when the intermediate upper surface plate 8 is placed, the surface of the intermediate upper surface plate 8 The surface of the face plate portion 2 is on the same plane.

In the present embodiment, the sheath 9 is embedded in the front-rear direction at two upper and lower positions of the main body block 4, that is, at the base of the support plate 3, the bottom plate 1 and the top plate 2.
A sheath 10 is embedded in the lower end of the block 4 for the main body, that is, the bottom plate 1 in the left-right direction. The sheath 9, 10
Tensioning the PC steel material 30 inserted through the fixing members 31 and 32
, The constituent blocks are rigidly connected in the front-rear direction and the left-right direction. An appropriate grout material such as mortar is injected into these sheaths to more tightly bond and integrate the PC steel material and the block.

Further, as shown in FIGS. 21 and 22,
A nut type insert 11 is embedded and fixed in the upper surface plate portion 2a, and a tapered through hole 12 whose diameter is reduced from the upper surface side to the lower surface side is provided in the intermediate upper surface plate 8, and in the middle of the bolt 13 inserted into the through hole 12. The mortar 15 is filled in the through hole 12 so as to surround the horizontal pressure plate 14 fitted and fixed.

Bolt 1 fixed on the block 4 side for the main body
The movement of 3 to come out of the intermediate upper surface plate 8 is caused by the inverted frustoconical mortar body 1 hardened in the tapered through hole 12.
5 and a horizontal pressure plate 14 embedded in the mortar body 15
Therefore, the intermediate upper plate 8 is rigidly connected to the main body block 4.

In the embodiment shown in FIGS. 5 to 8, when the intermediate upper surface plate 8 is placed, the surface of the intermediate upper surface plate 8 and the upper surface plate portion 2 are
Of the upper surface plate 2 and the intermediate upper surface plate 8 such that the surfaces of the
Steps are provided in both of them, and a sheath 16 in the left-right direction is embedded in the upper surface plate portion 2 and the intermediate upper surface plate 8 of the block 4 for the main body. The upper plate 8 is rigidly connected. A left-right sheath 10 is also embedded in the bottom plate 1 and the middle bottom plate 6 of the block 4 for the main body, and the PC steel material 3 inserted through the sheath 10
0 rigidly connects the main body block 4 and the intermediate upper surface plate 8. The main body blocks 4 are tightly connected by a PC steel material 30 inserted through the sheath 9 in the front-rear direction.

In the embodiment shown in FIGS. 9 to 12, the through hole laying type intermediate bottom plate 17 in which the through holes are provided in the above-mentioned intermediate bottom plate of the underdrain is used. This middle bottom plate 1
According to No. 7, the rainwater flowing in the water channel can be permeated into the foundation ground through the through holes 38, and the groundwater can be recharged. In the embodiment shown in FIGS. 13 to 16, a balustrade or a handrail 18 is installed above the upper end of the main body block 4 of the above-described culvert type assembled waterway.

In the embodiment shown in FIGS. 17 to 20, the block 21 for the main body portion having an L-shaped vertical cross section is formed by connecting the side surface plate portion 19 at a right angle to one end portion of the bottom surface plate portion 20 having the same or similar planar shape. , A PC steel sheath 22 is embedded in the front-back direction at two upper and lower positions of the main body block 21, and a PC steel sheath 23 is embedded in the left-right direction at the lower end of the main body block 21. The main body block 21 is arranged adjacent to the front-rear direction. Left and right body block 2
The bottom surface open part 24 between the bottom plate parts 20, 20 of 1, 21 is
It is closed by a precast or field cast intermediate bottom plate 25 in which a PC steel sheath is embedded in the left-right direction. The tense PC steel materials 30 are fixed by the fixing members 31 and 32, and the constituent blocks are tightly connected to each other. A balustrade and a handrail 18 are installed at the upper end of the main body block 21.

Between the blocks 4 and 4 for the body portion, or between the blocks 21 and 21 for the body portion, between the intermediate top plate 8 and the block 4 for the body portion, the intermediate bottom plate 6 or 25 and the block 4 for the body portion.
Alternatively, if necessary, a suitable water-stop treatment is performed between 21 by charging a packing member or a regular sealing member or filling a caulking material.

[0022]

As described above, in the prefabricated water channel of the present invention,
Bottom plate 1 and top plate 2 having the same or similar planar shape
Strut plate part 3 is installed at a right angle to one end of the
A main body block 4 having a U-shaped vertical cross-section and adjacent in the front-rear direction, in which a sheath 9 of C steel material is embedded in the front-rear direction and a sheath 10 of PC steel material is embedded in the left-right direction at the lower end portion, is a main component.

As described above, since the width of the upper plate 2 of the block 4 for the main body is set to be sufficiently wide, the upper plate 2 is effectively used as a scaffold for workers and a place for joining tools during assembly work. Since it is not necessary to temporarily install a dedicated scaffold or employ a worker at a high place, the assembly work can be performed at low cost and with high work efficiency and safety. Further, since the wide upper surface plate portion 2 increases the horizontal strength, it is possible to construct a water channel having excellent earthquake resistance.

Further, the bottom plate portion 1 of the block 4 for the main body portion
And the top plate portion 2 have the same planar shape, when the body block 4 is placed sideways, the support plate portion 3 becomes horizontal and the bottom plate portion 1 and the top plate portion 2 are arranged at the same height. For,
Regular stacking can be performed stably, and convenience in transporting or storing with a forklift or the like is good.

Furthermore, since the unit block forming the water channel is small, a special large-sized transport vehicle is not required even when laying a large-scale water channel. Also, when laying, it is possible to hang with a relatively small crane, so that the space required for the laying work can be reduced.

Further, by manufacturing and placing several kinds of main body blocks, intermediate top plates, and intermediate bottom plates according to size, and changing the combination method to adjust and change the water channel width,
It is possible to immediately assemble and construct a water channel that matches the flow rate at the construction site, and it is not necessary to fabricate blocks after investigating the amount of water flowing in the channel, so the construction period can be shortened.

Furthermore, since the assembly type water channel can be constructed in a structure that is structurally strong as described above, it is possible to reduce the thickness of each constituent element and the amount of rebars, thereby reducing the material cost and the product weight. It is possible.

Further, by providing the balustrade 18 and the handrail at the upper end of the main body block 4 or the main body block 21, when the underdrain type prefabricated waterway is used as a sidewalk or the like, laying work of a guard rail is required. It is economical because it can be omitted. Further, in the case of an open-deck type assembly-type waterway, since the balustrade and handrails act as a fall prevention member for infants and the like, there is no need to lay a balustrade or handrail separately adjacent to the waterway, and even from the ground. It is economical.

[Brief description of drawings]

FIG. 1 is a front view of an assembled state of a main body block, an intermediate top plate, and an intermediate bottom plate, which constitute an underdrain type assembly type water channel according to an embodiment of the present invention.

FIG. 2 is a plan view of an assembled state of each block shown in FIG.

FIG. 3 is a left side view of the blocks shown in FIG. 1 in an assembled state.

FIG. 4 is a perspective view of the prefabricated water channel of FIG. 1.

FIG. 5 is a front view of a main body block, an intermediate top plate, and an intermediate bottom plate, which are in an assembled state, which configures an underdrain-type assembled water channel according to another embodiment of the present invention.

6 is a plan view of an assembled state of each block shown in FIG. 5. FIG.

7 is a left side view of each block shown in FIG. 5 in an assembled state.

FIG. 8 is a perspective view of the prefabricated water channel of FIG.

FIG. 9 is a front view of an assembled state of a main body block, an intermediate top plate, and a through hole laying-type intermediate bottom plate, which constitutes an underdrain type assembly type water channel according to still another embodiment of the present invention.

10 is a plan view of an assembled state of each block shown in FIG. 9. FIG.

FIG. 11 is a left side view of the blocks shown in FIG. 9 in an assembled state.

FIG. 12 is a perspective view of the prefabricated water channel of FIG. 9;

FIG. 13 is a front view of a main body block, an intermediate top plate, and an intermediate bottom plate in an assembled state, which constitutes an underdrain-type assembled water channel according to another embodiment of the present invention.

14 is a plan view of an assembled state of each block shown in FIG. 13. FIG.

FIG. 15 is a left side view of the blocks shown in FIG. 13 in an assembled state.

16 is a perspective view of the prefabricated water channel of FIG. 13. FIG.

FIG. 17 is a front view of a main body block, an intermediate top plate and an intermediate bottom plate, which are in an assembled state, which constitutes an underdrain type assembly type water channel according to still another embodiment of the present invention.

FIG. 18 is a plan view of an assembled state of each block shown in FIG. 17.

FIG. 19 is a left side view of the blocks shown in FIG. 17 in an assembled state.

20 is a perspective view of the prefabricated water channel of FIG. 17. FIG.

FIG. 21 is an enlarged vertical cross-sectional view showing an embodiment of the joining structure of the main body block and the intermediate upper surface plate of the present invention.

22 is a plan view of the joint structure shown in FIG. 22. FIG.

[Explanation of symbols]

 1 Bottom plate part of block for main body part 2 Top plate part of block for main body part 3 Support plate part of block for main body part 4 Block for main body part 5 Bottom opening part 6 Intermediate bottom plate 7 Top opening part 8 Intermediate top plate 9 Front and back Sheath of PC steel material for directional connection 10 Sheath of PC steel material for lateral connection 11 Nut type insert 12 Tapered through hole 13 Bolt 14 Horizontal pressure resistant plate 15 Mortar 16 Upper sheath of PC steel material for horizontal connection 17 Through hole laying type middle bottom Face plate 18 Parapet 19 Strut plate part of main body block 20 Bottom plate part of main body block 21 L-shaped cross-section main body block 22 Sheath of PC steel material for front-rear direction connection 23 Sheath of PC steel material for left-right direction connection 24 Bottom opening Part 25 Intermediate bottom plate 26 Top plate plan view 27 Bottom plate plan view 28 Top plan view 29 Bottom plate plan view 30 PC steel material 31 Fixing member 32 fixing member

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area E03F 3/04 A 5/04 A

Claims (6)

[Claims] 1. A support plate part 3 is vertically connected between one ends of a bottom plate part 1 and a top plate part 2 having the same or similar planar shape, and a PC steel material is provided at two upper and lower positions of the support plate part 3. A sheath 9 is embedded in the front-rear direction, a PC steel sheath 10 is embedded in the bottom plate 1 in the left-right direction, and a main body block 4 having a U-shaped vertical cross-section that is adjacent in the front-rear direction; Precast or field cast intermediate bottom plate 6 in which a sheath of PC steel is embedded in the left and right direction, which closes the bottom open part 5 between the bottom plate parts 1 and 1 of the blocks 4 and 4; An underdrain type assembling type which is mounted on the end portions 2a, 2a of the upper plate portions 2, 2 of 4, 4 and an intermediate upper plate 8 which closes an upper open portion 7 between the upper plate portions 2, 2. Waterway. 2. A side plate portion 19 is connected to one end portion of a bottom plate portion 20 having the same or similar planar state at a right angle, and a PC steel sheath 2 is provided at two upper and lower portions of a main body block 21.
2 is embedded in the front-rear direction, and a PC steel sheath 23 is embedded in the lower end of the main body block 21 in the left-right direction.
And; bottom plate part 2 of left and right body part blocks 21 and 21
P to the left and right, closing the bottom opening 24 between 0 and 20
An open channel assembling type water channel consisting of a precast or field cast intermediate bottom plate 25 in which a sheath of C steel material is embedded. 3. When mutually fixing the upper surface plate portion 2a of the main body block 4 and the intermediate upper surface plate 8, a nut type insert 11 is embedded and fixed in the upper surface plate portion 2a, and the intermediate upper surface plate 8 is moved from the upper surface side to the lower surface side. Tapered through-hole 12 whose diameter decreases toward
The bolt 13 inserted into the through hole 12 is screwed and fixed to the nut type insert 11, and the mortar 15 is filled into the through hole 12 so as to surround the horizontal pressure plate 14 fixed and fitted in the middle of the bolt 13. The underdrain prefabricated waterway according to claim 1, which is coupled to the. 4. The underdrain type assembling water channel according to claim 1, wherein a sheath 16 of PC steel is embedded in the upper end portion of the main body block 4 in the left-right direction of the block. 5. A through hole laying type intermediate bottom plate 17 in which a through hole is provided in the intermediate bottom plate between the bottom plate parts 1, 1 or between 20, 20 of the main body block 4 or 21 is used. The prefabricated water channel according to claim 1, claim 2, claim 3, or claim 4. 6. The balustrade or the handrail 18 is installed above the upper end of the main body block 4 or the main body block 21. The claim 1, claim 2, claim 3, claim 4, or claim 5.
Assembled waterway described in.