JP2001182137A - Lattice frame for sill of closed channel and structure laid for the closed channel, and construction method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To integrate a tubular body or a channel into ground. SOLUTION: Long members having an elastic and sturdy quality are arranged lengthwise and breadthwise at every specified distance to superpose on each other, and the intersections of the long members are fixed by fastening means so as to support a closed channel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lattice frame for a foundation of a closed channel, a closed channel laying structure, and a method of constructing the closed channel, for the purpose of laying closed channels such as pipes and culverts stably and in a short time. .

[0002]

2. Description of the Related Art The foundation of a conventional pipeline (closed channel for pipes and culverts) is intended to prevent the pipeline from descending and displacing for many years with respect to its supporting ground, and therefore, the strength of the pipeline supporting ground is insufficient. In such a case, various methods such as sand replacement at the lower part of the pipeline laying, ground improvement, pile support, pipeline foundation installation, and ladder trunk installation are used.

[0003] As described above, after the ground is maintained, a concrete foundation is used to solidify the ground, and a pipe flexible joint is used at the structural boundary of the pipeline.

[0004]

The above-mentioned method of maintaining each area is still not perfect, and there are various problems.
In other words, in the event of an earthquake or crustal deformation, the pipeline changes over time in three-dimensional directions, and not only in a simple axial displacement of the pipeline, but also in a repetitive and repetitive manner. (Relative displacement with the soil).

[0005] The pile support and the concrete foundation employ a rigid support method to cope with the displacement. However, constructing the concrete foundation requires not only enormous costs and materials but also pipes. When the road is laid on the water floor, there is a problem that the construction becomes difficult. In addition, there is a problem that the flexible joint is broken without being able to adapt to a large displacement of the ground, and a pipe accident is likely to occur.

[0006] In addition, the buried pipeline that crosses the low riverbed of the river,
At the time of the flood, the water level of the main stream suddenly rose, and the pipeline could rise.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a foundation grid frame is laid at least below a joint portion of a closed channel to integrate the closed channel with the foundation grid frame, By integrating the lattice frame, the displacement amount of the closed channel is less likely to exceed the displacement amount of the ground in the event of an earthquake, crustal deformation, etc., and the above-mentioned conventional problem is solved.

That is, since the relative displacement between the closed channel and the ground is reduced, the displacement of the joint in the closed channel stays within its elastic limit, and the joint can be prevented from breaking.

That is, in the invention of the lattice frame, long members having elasticity and toughness are arranged vertically and horizontally at predetermined intervals, and the intersections of the long members are fixed by fastening means to support the closed channel. It is a lattice frame for a foundation of a closed channel, characterized in that it can be used. The long member is a steel material such as an H-section steel, a channel steel, an angle iron, a steel pipe, or a member such as a steel frame and reinforced concrete, and the closed channel is a concrete pipe,
Pipes such as steel pipes, ductile iron pipes, FRP pipes, synthetic resin pipes, and culverts such as box culverts.

[0010] Next, the invention of a structure is characterized in that the foundation lattice frame of the closed channel is installed at least below a joint of the closed channel, and the closed channel is integrally laid on the foundation lattice frame. It is a closed channel laying structure characterized by the following:
The closed channel and the base lattice frame are integrated by applying fixing means such as a pipe band or a pipe bracket.

Further, the invention of the construction method is characterized in that the ground is maintained along the closed channel laying line at the joint interval of the closed channel, a grid frame for the foundation is installed on the ground, and the closed channel is provided by the grid frame for the ground. A method of constructing a closed channel laying structure characterized by laying the base grid frame and the closed channel integrally with each other while supporting the vicinity of the joint of It holds the ground around the lower part of the base and is integrated with the ground.

In the above invention, since the lattice frame cuts into the ground, there is a characteristic that the displacement of the inertia delay is minimized with respect to an earthquake, a sway, an inertia delay and the like by being integrated with the ground. In addition, since all steel frame product processing can be manufactured at the factory, the reliability of strength is excellent, and a large number of grid frames of the same quality can be produced, so that it is possible to quickly respond to a large amount of demand at low cost.

Further, since it is buried in water or soil, there is little opportunity to come into contact with air, ozone and oxygen, and there is no possibility that corrosion will proceed at an early stage, so that a predetermined durability can be maintained.

The pipe channel can be tightly fixed to the grid frame (for example, with a pipe band or a bracket) so as to be integrated with the grid frame. Regarding the drainage channel,
Since it is a large culvert, it is possible to sufficiently integrate it with a huge pressure of the contact portion without taking any binding means.

According to the present invention, since only the grid frame is installed, it is possible to easily and surely construct the structure even when laying on the bottom of the water, and there is an advantage that it is not affected by the skill of the operator. On-site workability is remarkably excellent.

That is, the builder can assemble a structure as designed in accordance with the construction procedure, thereby completing an accurate structure as designed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a joint portion of a closed channel is supported by a grid frame for a base made of a tough long member,
This is a closed channel foundation grid frame used for enhancing integration with the closed channel, the foundation grid frame, and the ground.

In another aspect of the present invention, a grid frame for a base of the closed channel is installed at a predetermined interval along a predetermined line for laying a closed channel, and a pipe or culvert joint is mounted on the grid frame for the closed channel. do it,
A closed channel laying structure laid integrally with the foundation lattice frame.

Still another aspect of the invention is to provide a ground in a joint gap of a closed channel along a closed channel laying line, place a grid frame for a base on the ground and support the vicinity of the joint, and This is a method for constructing a closed channel laying structure in which a channel and a grid frame for a base are integrally laid.

In the above, the long member of the lattice frame used is a steel material such as H-section steel, channel steel, steel pipe or the like, or a member such as steel frame and reinforced concrete.
All long materials having corrosion resistance and the like can be used.

In the above invention, as for the pipeline, the grid frame and the tubular body are fixed by a steel band, a bracket or other tightening material, but it is often not necessary to fix a culvert such as a box culvert.

According to the present invention, since the closed channel and the grid frame for the base are integrated, even if the ground vibrates due to an earthquake or the like, the joint portion of the closed channel, the grid frame, and the ground are substantially integrated. The inertial delay is small due to the vibration direction, vibration amount and amplitude of the closed channel and the ground, etc., and even if there is a deviation, it is absorbed by the elasticity of the joint.

Accordingly, there is no fear that an accident will occur without applying an external force enough to destroy various kinds of joints different for each pipe type.

According to the above invention, since all the lattice frames are processed and produced in a factory and assembled on site, the accuracy and reliability of the shape and structure are high, and no special consideration is required when laying by the construction technology. Shortening of the construction period and savings in materials and construction costs are expected to be significant.

[0025]

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. The horizontally elongated members 1 and 1 made of H-shaped steel are arranged in parallel at a predetermined interval, and the vertically elongated members 2 and 2 of the same shape are formed on the horizontally elongated members 1 and 1 at right angles to the horizontally elongated members 1 and 1. Are arranged in parallel at predetermined intervals, and horizontally elongated members 3, 3 of the same shape are arranged on the vertically elongated members 2, 2 at right angles to the elongated members 2, 2 at predetermined intervals and in parallel with each other. The intersections of the long members were welded or bolted together to form the base lattice frame 5 of the present invention. The lattice frame 5 for the base mounts the pipe 4 (closed water channel). In this case, depending on the ground, all are supported, but a base lattice frame 5 is installed at least at the joint portion.

[0026]

Embodiment 2 In the embodiment shown in FIGS. 4, 5, and 6, three pipes 4, 4a, and 4b are placed on a base lattice frame 6, and each of the pipes 4, 4a,
4b is a steel band 9, respectively, to the uppermost horizontally long member 7,
9 to form a closed channel laying structure 10 of the present invention. In the figure, reference numerals 8 and 8 denote vertically long members that constitute the base lattice frame 6 together with the horizontally long members 7 and 7, and 11 and 11 denote connecting members of the vertically long members 8 and 8.

In the above embodiment, the tubes 4, 4a, 4b
The base lattice frame 6 is integrated with the ground by steel bands 9, 9, and the base lattice frame 6 is tightly integrated with the ground by the long and horizontal long members and the long connecting members 11. , Even in the event of an earthquake, the vibration of the ground and the vibration of the pipe body do not produce a gap (or at least) without vibration, so there is no danger that an excessive force may be applied to the pipe body. In addition, even if there is a slight displacement, it can be easily absorbed in the elastic region of the joint.

In the above embodiment, the pipes 4, 4a, 4b have been described. FIG. 7 (a) shows a case where the box kargart 12 is placed on the base lattice frame 13. 14, 1 in the figure
Reference numeral 4 denotes a vertically long member, 15 denotes a horizontally long member, and 16 denotes a long member for preventing a horizontal movement of the box card.

[0029]

Embodiment 3 Another embodiment of the present invention will be described with reference to FIGS. When laying a gutter pipe 18 from the tank structure wall 17 underwater (for example, on a riverbed), the ground 19 is first prepared along the laying path of the gutter pipe 18, and the base lattice frames 20, 20 are placed on the ground 19. The gutter pipe 18 is installed at a distance capable of supporting the vicinity of the joint 21 of the gutter pipe 18, and then the gutter pipe 1 is placed on the base lattice frames 20, 20.
8, 18a, 18b and 18c are laid. The gutter pipe 18
c, a scouring prevention grid frame 22 is installed below the tip,
The quarry stones, blocks 23 and 23a are set in the lattice frame 22. A waterproof steel sheet pile 31 and a rim 32 are provided at the lower end of the gutter tube 18c to securely support the tip.

In the above, even if the discharged water is discharged as indicated by arrow 24 and falls into a river or the like, the part is not covered by the grid frame 22.
Since the spillway is protected by the swarf 23 and the like, the spillway can be protected after all without fear of scouring.

[0031]

Embodiment 4 Another embodiment of the present invention will be described with reference to FIG. This embodiment shows a case where a water distribution pipe is curved. In other words, the corner structure 30 is formed by interposing and fixing the corner grid frame 26 between the flat rectangular base grid frames 25 and 25a shown in each of the above embodiments. Like the other lattice frames, the corner lattice frames 26 are formed by superposing steel materials such as H-section steels at predetermined intervals vertically and horizontally, and fastening each intersection by bolts or welding.

The water pipe 27 is placed on the corner structure 30, and the steel pipe 33 or a bracket or the like is used to place the corner structure 3.
If the water distribution pipe 27 is integrally fixed to the ground, the water distribution pipe 27 is tightly fixed to the ground via the corner structure 30, so that the water distribution pipe 27 has the same rigidity as when embedded in a concrete structure. Therefore, even if an outward thrust in the direction of arrow 28 is applied by the pressurized water, there is no risk of movement or deformation.

According to the above embodiment, the protection of the pipeline thrust at the curved bay of the water distribution pipe is extremely inexpensive, simple and easy.
In addition, there is an advantage that it can be made firm.

[0034]

Embodiment 5 A tank structure wall 1 is provided by the base grid frame of the present invention.
7 is a support structure in which the lower surface of a water distribution pipe 27 laid outside from the base 7 is fixed to a step 17 a of the tank structure wall 17 at one end of a base lattice frame 34 in a cantilever manner with anchor bolts 35. In the above description, the base lattice frame 34 is displaced as shown by a chain line with the movement of the water distribution pipe 27 in the direction of the arrow 36, but moves together with the water distribution pipe 27, so that the joint 37 of the water distribution pipe 27 is connected. , The displacement is within the allowable range, and there is no risk of damage or other accidents. 38 in the figure is a water pipe 27
Is a steel band for fixing to a base lattice frame.

[0035]

According to the present invention, since the base grid frame of the present invention can be manufactured at a factory, there is an effect that a large number of grid frames of the same shape and high quality can be provided. In addition, the use of the base lattice frame facilitates underwater work, improves reliability, and has various effects such as shortening the construction period, saving materials, and inexpensively constructing.

Further, according to the structure of the present invention, since the ground and the pipe or the culvert can be integrally connected, it is possible to cope with an earthquake or the like within the elastic deformation of the joint of the tubing or the culvert, and to destroy or otherwise damage the joint. There are various effects such as no risk of accidents.

According to the construction method of the present invention, there are various effects such as shortening the construction period when constructing a closed channel, saving materials, and enabling easy and reliable construction even underwater construction at low cost.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of a lattice frame according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a partial plan view of an embodiment of the structure.

FIG. 5 is a partial side view of the same.

FIG. 6 is a partial front view of the same.

FIG. 7A is an enlarged partial cross-sectional view of an embodiment in which a box culvert is also laid. (B) A plan view of a lattice frame used for the same.

FIG. 8 is a partially sectional front view showing a laid state of a gutter tube constructed by the method invention.

FIG. 9 is a plan view of the same.

FIG. 10 is a plan view of the embodiment supporting the curved tube.

FIG. 11 is an explanatory view of an embodiment in which a water pipe is cantilevered by a lattice frame.

[Explanation of symbols]

 1, 3, 8, 15 Horizontally long member 2, 7, 14 Vertically long member 4, 4a, 4b Tube 5, 6, 13 Grid frame for base 9 Steel band 10 Closed channel laying structure 11 Connecting material 12 Box culvert 16 Long member 17 Tank structure wall 18 Gutter pipe 19 Ground 20 Base grid frame 21 Joint 22 Grid frame 23 Split stone 24 Discharge port flow direction 25, 25a, 34 Base grid frame 26 Corner grid frame 27 Water distribution pipe 30 Corner structure 35 Anchor bolt 37 Joint 38 Steel band

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[Procedure amendment]

[Submission date] December 27, 2000 (200.12.
27)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Title of the Invention Grid Frame for Closed Channel Base, Closed Channel Laying Structure, and Method of Building the Same

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lattice frame for a foundation of a closed channel, a closed channel laying structure, and a method of constructing the closed channel, for the purpose of laying closed channels such as pipes and culverts stably and in a short time. .

[0002]

2. Description of the Related Art The foundation of a conventional pipeline (closed channel for pipes and culverts) is intended to prevent the pipeline from descending and displacing for many years with respect to its supporting ground, and therefore, the strength of the pipeline supporting ground is insufficient. In such a case, various methods such as sand replacement at the lower part of the pipeline laying, ground improvement, pile support, pipeline foundation installation, and ladder trunk installation are used.

[0003] As described above, after the ground is maintained, a concrete foundation is used to solidify the ground, and a pipe flexible joint is used at the structural boundary of the pipeline.

[0004]

The above-mentioned method of maintaining each area is still not perfect, and there are various problems.
In other words, in the event of an earthquake or crustal deformation, the pipeline changes over time in three-dimensional directions, and not only in a simple axial displacement of the pipeline, but also in a repetitive and repetitive manner. (Relative displacement with the soil).

[0005] The pile support and the concrete foundation employ a rigid support method to cope with the displacement. However, constructing the concrete foundation requires not only enormous costs and materials but also pipes. When the road is laid on the water floor, there is a problem that the construction becomes difficult. In addition, there is a problem that the flexible joint is broken without being able to adapt to a large displacement of the ground, and a pipe accident is likely to occur.

[0006] In addition, the buried pipeline that crosses the low riverbed of the river,
There was a risk that the main water level would rise rapidly during a flood, and the pipeline would rise when the pipe was empty .

[0007]

SUMMARY OF THE INVENTION According to the present invention, a foundation grid frame is laid at least below a joint portion of a closed channel to integrate the closed channel with the foundation grid frame, By integrating the lattice frame, the displacement amount of the closed channel is less likely to exceed the displacement amount of the ground in the event of an earthquake, crustal deformation, etc., and the above-mentioned conventional problem is solved.

That is, since the relative displacement between the closed channel and the ground is reduced, the displacement of the joint in the closed channel stays within its elastic limit, and the joint can be prevented from breaking.

That is, in the invention of the lattice frame, long members having elasticity and toughness are arranged vertically and horizontally at predetermined intervals, and the intersections of the long members are fixed by fastening means to support the closed channel. It is a lattice frame for a foundation of a closed channel, characterized in that it can be used. The long member is a steel material such as an H-section steel, a channel steel, an angle iron, a steel pipe, or a member such as a steel frame and reinforced concrete, and the closed channel is a concrete pipe,
Pipes such as steel pipes, ductile iron pipes, FRP pipes, synthetic resin pipes, and culverts such as box culverts.

[0010] Next, the invention of a structure is characterized in that the foundation lattice frame of the closed channel is installed at least below a joint of the closed channel, and the closed channel is integrally laid on the foundation lattice frame. It is a closed channel laying structure characterized by the following:
The closed channel and the base lattice frame are integrated by applying fixing means such as a pipe band or a pipe bracket.

Further, the invention of the construction method is characterized in that the ground is maintained along the closed channel laying line at the joint interval of the closed channel, a grid frame for the foundation is installed on the ground, and the closed channel is provided by the grid frame for the ground. A method of constructing a closed channel laying structure characterized by laying the base grid frame and the closed channel integrally with each other while supporting the vicinity of the joint of It holds the ground around the lower part of the base and is integrated with the ground.

In the above invention, since the lattice frame cuts into the ground, there is a characteristic that the displacement of the inertia delay is minimized with respect to an earthquake, a sway, an inertia delay and the like by being integrated with the ground. In addition, since all steel frame product processing can be manufactured at the factory, the reliability of strength is excellent, and a large number of grid frames of the same quality can be produced, so that it is possible to quickly respond to a large amount of demand at low cost.

[0013] base lattice frame water, no air, ozone, a possibility that corrosion on occasion less early touching the oxygen progresses to be buried in the ground, it is possible to keep a predetermined durability.

[0014] The pipe channel can be tightly fixed to a foundation grid frame (for example, with a pipe band or a bracket) to be integrated with the grid frame. Further, since the culvert becomes a large culvert, it is possible to sufficiently integrate the culvert with a huge pressure of the abutting portion without taking any binding means.

According to the present invention, it is possible to easily and surely construct the structure even when laying on the bottom of the water because the grid frame for the base is only installed, and there is an advantage that it is not affected by the skill of the operator. The on-site workability is remarkably excellent.

That is, the builder can assemble a structure as designed in accordance with the construction procedure, thereby completing an accurate structure as designed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a joint portion of a closed channel is supported by a grid frame for a base made of a tough long member,
This is a closed channel foundation grid frame used for enhancing integration with the closed channel, the foundation grid frame, and the ground.

In another aspect of the present invention, a grid frame for a base of the closed channel is installed at a predetermined interval along a predetermined line for laying a closed channel, and a pipe or culvert joint is mounted on the grid frame for the closed channel. do it,
A closed channel laying structure laid integrally with the foundation lattice frame.

Still another aspect of the invention is to provide a ground in a joint gap of a closed channel along a closed channel laying line, place a grid frame for a base on the ground and support the vicinity of the joint, and This is a method for constructing a closed channel laying structure in which a channel and a grid frame for a base are integrally laid.

In the above, the long member of the base lattice frame used is a steel material such as an H-shaped steel, a channel steel, a steel pipe, or a member such as a steel frame and a reinforced concrete.
Any long material having both elasticity and corrosion resistance can be used.

[0021] In the above invention, the pipe is a base.
The grid frame and the pipe are fixed to each other with a steel band, a bracket, or other tightening material, but fixing of a culvert such as a box culvert is often unnecessary.

According to the present invention, since the closed channel and the grid frame for the base are integrated, even if the ground vibrates due to an earthquake or the like, the joint portion of the closed channel, the grid frame, and the ground are substantially integrated. The inertial delay is small due to the vibration direction, vibration amount and amplitude of the closed channel and the ground, etc., and even if there is a deviation, it is absorbed by the elasticity of the joint.

Accordingly, there is no fear that an accident will occur without applying an external force enough to destroy various kinds of joints different for each pipe type.

According to the above invention, since all of the base grid frames are processed and produced at the factory and assembled on site, the accuracy and reliability of the shape and structure are high, and no special consideration is required when laying by the construction technology. Therefore, shortening of the construction period and saving of materials and construction costs are greatly expected.

[0025]

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. The horizontally elongated members 1 and 1 made of H-shaped steel are arranged in parallel at a predetermined interval, and the vertically elongated members 2 and 2 of the same shape are formed on the horizontally elongated members 1 and 1 at right angles to the horizontally elongated members 1 and 1. Are arranged in parallel at predetermined intervals, and horizontally elongated members 3, 3 of the same shape are arranged on the vertically elongated members 2, 2 at right angles to the elongated members 2, 2 at predetermined intervals and in parallel with each other. The intersections of the long members were welded or bolted together to form the base lattice frame 5 of the present invention. The lattice frame 5 for the base mounts the pipe 4 (closed water channel). Depending ground in this case, although the support all, at least the joint portion placing the foundation for rated <br/> stator frame 5.

[0026]

Embodiment 2 FIGS. 4, 5 and 6 show a grid frame 6 for a base .
The three tubes 4, 4a, 4b are placed on the
a, 4b are fixed to the uppermost horizontally long members 7, 7 by steel bands 9, 9, respectively, and the closed channel laying structure 1 of the present invention is provided.
0. Vertical scale member figure 8,8 constituting the foundation for lattice frame 6 together with the Horizontal scale members 7, 11, 11 is a connecting member of the longitudinal scale member 8,8.

In the above embodiment, the tubes 4, 4a, 4b
The base lattice frame 6 is integrated with the ground by steel bands 9, 9, and the base lattice frame 6 is tightly integrated with the ground by the long and horizontal long members and the long connecting members 11. , Even in the event of an earthquake, the vibration of the ground and the vibration of the pipe body do not produce a gap (or at least) without vibration, so there is no danger that an excessive force may be applied to the pipe body. In addition, even if there is a slight displacement, it can be easily absorbed in the elastic region of the joint, and there is no risk of destruction due to an earthquake or the like.

[0028] The embodiment, tube 4, 4a, has been described 4b, FIG. 7 (a) shows the case of mounting the box Cal bar preparative 12 to base lattice frame 13 above. 14,
14 Vertical elongated member, 15 Horizontal scale member, 16, 16 is an elongated member for lateral movement prevention box Culver bets.

[0029]

Embodiment 3 Another embodiment of the present invention will be described with reference to FIGS. When laying a gutter pipe 18 from the tank structure wall 17 into the water (for example, a riverbed), first, a rubble stone 19 is provided along a laying path of the tub pipe 18, and the grid frames 20, 20 are mounted on the rubble stone 19. , placed at a distance capable of supporting around joint 21 of the gutter pipe 18, then laying the gutter pipe 18,18a to base lattice frame 20, 20 above, 18b, a 18c. The gutter tube 1
A grid frame 22 for preventing scouring is installed below the front end of 8c, and crushed stones, blocks 23 and 23a are installed in the grid frame 22. At the lower end of the gutter pipe 18c, a watertight steel sheet pile 3 is provided.
1 and the edge foundation concrete 32 are provided to securely support the tip.

In the above, even if the discharged water is discharged as indicated by arrow 24 and falls into a river or the like, the part is not covered by the grid frame 22.
Since the spillway is protected by the swarf 23 and the like, the spillway can be protected after all without fear of scouring.

[0031]

Embodiment 4 Another embodiment of the present invention will be described with reference to FIG. This embodiment shows a case where a water distribution pipe is curved. That is, the flat rectangular base shown in each of the above embodiments.
A corner grid frame 26 is interposed and fixed between the grid frames 25 and 25a for use to form a corner structure 30. This corner grid frame 26 is also H, like the other base grid frames 25 and 25a.
A steel material such as a section steel is vertically and horizontally superposed at predetermined intervals, and each intersection is bolted or welded.

The water pipe 27 is placed on the corner structure 30, and the steel pipe 33 or a bracket or the like is used to place the corner structure 3.
If the water distribution pipe 27 is integrally fixed to the ground, the water distribution pipe 27 is tightly fixed to the ground via the corner structure 30, so that the water distribution pipe 27 has the same rigidity as when embedded in a concrete structure. Therefore there is no risk to move or deform even when applied outwardly thrust arrow 28 direction by the pressure water.

According to the above embodiment, the protection of the pipeline thrust at the curved bay of the water distribution pipe is extremely inexpensive, simple and easy.
In addition, there is an advantage that it can be made firm.

[0034]

Embodiment 5 An embodiment of the present invention will be described with reference to FIG.
Lever, the base lattice frame, tank and the lower surface of the water pipe 27 laid outside from the structural wall 17, the stepped portion 17a of the tank structure wall 17, end anchor bolts 3 of the base lattice frame 34
5 is a support structure fixed in a cantilevered manner. In the above description, the grid frame for the base 34 is displaced as shown by a chain line with the movement of the water distribution pipe 27 in the direction of the arrow 36. With respect to 37, the displacement is within an allowable range, and there is no risk of damage or other accidents. Figure 38 is a steel band for fixing the water pipe 27 on the base for price <br/> stator frame.

[0035]

[Effect of the Invention] Production of the base lattice frame of the present invention, since it factory production, large amounts of lattice frame homogeneous isomorphic, and there is an effect capable of providing a reliable product for quality. In addition, the use of this foundation grid frame facilitates underwater work,
There are various effects such as improvement of reliability, shortening of construction period, saving of materials, and inexpensive construction.

Further, according to the structure of the present invention, since the ground and the pipe or the culvert can be integrally connected, it is possible to cope with an earthquake or the like within the elastic deformation of the joint of the tubing or the culvert, and to destroy or otherwise damage There are various effects such as no risk of accidents.

According to the construction method of the present invention, there are various effects such as shortening the construction period when constructing a closed channel, saving materials, and enabling easy and reliable construction even underwater construction at low cost.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of a lattice frame according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a partial plan view of an embodiment of the structure.

[Figure 5] also some positive rear view.

[6] Also part side sectional view.

FIG. 7A is an enlarged partial cross-sectional view of an embodiment in which a box culvert is also laid. (B) A plan view of a lattice frame used for the same.

[8] Also a side sectional view and partially in section showing a laying state of a gutter pipe constructed by a method invention.

FIG. 9 is a plan view of the same.

FIG. 10 is a plan view of the embodiment supporting the curved tube.

FIG. 11 is an explanatory view of an embodiment in which a water pipe is cantilevered by a lattice frame.

[Description of Signs] 1, 3, 8, 15 Horizontally long member 2, 7, 14 Vertically long member 4, 4a, 4b Tube 5, 6, 13 Grid frame for base 9 Steel band 10 Closed channel laying structure 11 Connection Material 12 box culverts 16 elongated member 17 tank structural wall 18 trough tube 19 Kuriishi 20 base lattice frame 21 joint 22 lattice frame 23 Wari ishi 24 discharge outlet flow direction 25, 25a, 34 base lattice frame 26 corner lattice frame 27 distribution Water pipe 30 Corner structure 35 Anchor bolt 37 Joint 38 Steel band

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Claims (7)

[Claims] 1. A long member made of a tough material having elasticity,
A grid frame for a base of a closed channel, wherein the grid portion is arranged vertically and horizontally at predetermined intervals, and an intersection of the long members is fixed by a fastening means so that the closed channel can be supported. 2. The elongate member is an H-section steel, a channel steel, an angle iron,
2. The lattice frame for a foundation of a closed channel according to claim 1, wherein the frame is a steel material such as a steel pipe or a member such as a steel frame and a reinforced concrete. 3. The closed channel is a pipe such as a concrete pipe, a steel pipe, a ductile iron pipe, an FRP pipe, a synthetic resin pipe, and a culvert such as a box culvert.
The grid frame for the foundation of the closed channel described. 4. A grid frame for a base of a closed channel according to claim 1, wherein the grid frame is installed at least below a joint of the closed channel, and the closed channel is integrally laid on the grid frame for the base. Closed channel laying structure. 5. The closed channel laying structure according to claim 4, wherein the closed channel and the foundation lattice frame are integrated by applying fixing means such as a pipe band or a pipe bracket. object. 6. The ground is maintained along the closed channel laying line at the joint interval of the closed channel, a grid frame for a base is installed on the ground, and the vicinity of the joint of the closed channel is supported by the grid frame for the base. A method of constructing a closed channel laying structure, wherein the foundation lattice frame and the closed channel are integrally laid. 7. The method for constructing a closed channel laying structure according to claim 6, wherein the foundation grid frame is integrated with the ground.