JP4108894B2 - Steel frame with driftwood stopper - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steel framework, and more particularly to a steel framework provided with a driftwood stopper for catching driftwood in a water passage portion.
[0002]
[Prior art]
One of the impervious steel sabo dams is a steel framework. As shown in FIG. 9, the steel frame is composed of a steel frame 1 that is continuously provided in the vertical and horizontal directions and filled with an interstitial material 2 such as cobblestone and crushed stone.
[0003]
Such a steel frame has a high member strength, so it is easy to increase in size compared to wood and concrete, has a high water permeability, and does not require a large machine for assembly and filling operations, and is performed mainly by human power. Has the advantage that it is possible.
[0004]
The steel frame having the advantages as described above is suitable for construction of a landslide area, an area with ground fluctuation, a place with a lot of spring water, a disaster emergency work, or a place where a large construction machine cannot enter.
[0005]
A water passage portion 3 is formed in the upper part of the steel frame, from which water during flooding flows downstream.
[0006]
However, the above-described conventional steel framework has the following problems. That is, as described above, in the conventional steel framework, the water at the time of flooding flows downstream from the water passage portion 3, but at that time, a large amount of driftwood also flows together, causing great damage.
[0007]
Therefore, conventionally, a separate dam was constructed downstream of the steel frame, and driftwood was captured by this dam.
[0008]
[Problems to be solved by the invention]
However, since it is necessary to construct a secondary dam separately from the steel framework, there is a problem that the construction cost increases and the construction period of the entire dam construction is extended accordingly. In addition, depending on the circumstances, there were cases where the sub dam could not be constructed due to the construction conditions.
[0009]
Therefore, the object of the present invention is to provide a driftwood stopper integrally with the steel frame so that it is not necessary to construct a secondary dam as in the prior art. An object of the present invention is to provide a steel framework that can solve all the above problems.
[0010]
[Means for Solving the Problems]
The invention according to claim 1 is a steel framework in which a steel frame filled with an interstitial material such as cobblestone, crushed stone or the like is provided continuously in a vertical and horizontal direction, and a water permeable portion is formed in an upper portion thereof. A driftwood stopper is provided on the part, and the driftwood stopper is configured integrally with the steel frame by extending upward in the longitudinal direction of the steel frame constituting the bottom of the water passage part. It has the characteristics.
[0011]
The invention according to claim 2 is characterized in that, in the invention according to claim 1, the extended longitudinal frame is reinforced by a reinforcing material .
[0012]
The invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, a cushioning material is attached upstream of the driftwood stopper .
[0013]
The invention described in claim 4 is characterized in that, in the invention described in any one of claims 1 to 3, the height of the driftwood stopper is lower than the height of the water passage portion .
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, one embodiment of the steel framework of the present invention will be described with reference to the drawings.
[0018]
FIG. 1 is a schematic perspective view showing one embodiment of the steel framework of the present invention, FIG. 2 is a view in the A direction of FIG. 1, and FIG. 3 is still another embodiment of the steel framework of the present invention. FIG. 4 is a partial side view showing another embodiment of the steel framework of the present invention, and FIG. 5 is a partial side view showing still another embodiment of the steel framework of the present invention. FIG. 6 is a schematic perspective view showing still another embodiment of the steel framework of the present invention.
[0019]
As shown in FIGS. 1 to 6, the steel frame of the present invention is configured by connecting a steel frame 2 filled with an interstitial material 1 such as cobblestone and crushed stone vertically and horizontally, with a water passing portion at the top. In the steel framework in which 3 is formed, a driftwood stopper 4 is provided in the water passage portion 3.
[0020]
As shown in FIG. 1 and FIG. 2, the driftwood stopper 4 extends the longitudinal frames 5 </ b> A and 5 </ b> B on the downstream side and the upstream side of the steel frame 2 </ b> A constituting the bottom portion of the water passage portion 3. The reinforcing members 8 composed of the horizontal beam members 6 and the braces 7 are fixed to the longitudinal frames 5A and 5B on the downstream side and the upstream side. If the frames 5A and 5B have sufficient strength, the reinforcing material 8 may not be provided. Conversely, if the strength of the horizontal beam 6 and the brace 7 is insufficient, another reinforcing material is provided. It is also possible to provide a material.
[0021]
In addition, the height of the driftwood stopper 4 is made lower than the height of the water passage portion 3 (indicated by 1 in FIG. 1). This is due to the following reason.
[0022]
If the height of the driftwood stopper 4 is the same as the height of the water passage portion 3, when the water passage portion 3 is blocked by the driftwood, the path of the running water flowing over the dam is not constant. If the path of running water is not constant in this way, the scouring location caused by the falling energy of running water will not be determined, and it will be necessary to take measures against scouring by running water, such as construction of a secondary dam. However, if the height of the driftwood stopper 4 is set lower than the height of the water passage portion 3, the water passage portion 3 is not completely blocked by the driftwood, and the flowing water flows from the upper portion of the water passage portion 3. Since the path of running water is constant in this way, scouring measures such as reinforcing the running water falling part can be simplified.
[0023]
As shown in FIG. 3, a horizontal member 10 that crosses the water passage portion 3 may be attached to the upstream frame 5 </ b> B. In this case, since the driftwood stopper 4 is reinforced by the horizontal member 10, the reinforcing member 8 can be made light.
[0024]
As shown in FIG. 4, if a buffer material 9 made of a steel pipe or the like is attached to the upstream side of the framework 5 </ b> B on the upstream side of the driftwood stopper 4, in addition to the driftwood stopper effect, the driftwood stopper 4 due to the driftwood colliding with the driftwood stopper 4. Damage can be reduced.
[0025]
As shown in FIG. 5, the driftwood stopper 4 is formed by slightly extending the longitudinal frameworks 5 </ b> A and 5 </ b> B on the downstream side and the upstream side of the steel frame 2 </ b> A constituting the bottom of the water passage portion 3, and extending the downstream side Alternatively, a U-shaped driftwood stopper member 11 such as a steel pipe may be detachably fitted into the upstream vertical frames 5A and 5B. If the driftwood stopper member 11 is filled with concrete, the driftwood stopper 4 can be further reinforced. It should be noted that the damaged driftwood stopper member 11 can be easily replaced by attaching the driftwood stopper member 11 to the frames 5A and 5B in a detachable manner.
[0026]
Although not shown, at least one of the vertical frames 5A and 5B may be extended upward, and a driftwood stopper member made of a steel pipe or the like may be detachably fitted into the extended frame.
[0027]
As shown in FIGS. 6 and 7, the driftwood stopper 4 includes a horizontal rope 12 crossing the upstream side of the water passage portion 3, and a vertical rope stretched between the central portion of the horizontal rope 12 and the steel frame 2A. 13 may be used.
[0028]
As shown in FIG. 8, a horizontal round steel 14 may be used instead of the horizontal rope 12, and a vertical round steel 15 may be used instead of the vertical rope 13. A chain may be used.
[0029]
Any of the driftwood stoppers 4 described above can reliably capture driftwood during a flood. Therefore, unlike the prior art, there is no need to construct a separate dam for the purpose of stopping driftwood.
[0030]
【The invention's effect】
As described above, according to the present invention, in a steel framework in which a steel frame filled with an interstitial material such as cobblestone, crushed stone and the like is provided continuously in a vertical and horizontal direction, and a water passage portion is formed in the upper part. By providing a driftwood stopper in the water passage part, there is no need to construct a secondary dam for the purpose of driftwood prevention as in the prior art, and therefore, there is a problem of extension of the construction period of the dam due to the construction of the secondary dam. In addition, the steel frame can be constructed even in a place where the secondary dam cannot be constructed.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an embodiment of a steel framework of the present invention.
FIG. 2 is a view in the A direction of FIG.
FIG. 3 is a schematic perspective view showing still another embodiment of the steel framework of the present invention.
FIG. 4 is a partial side view showing another embodiment of the steel framework of the present invention.
FIG. 5 is a partial side view showing still another embodiment of the steel framework of the present invention.
FIG. 6 is a schematic perspective view showing still another embodiment of the steel framework of the present invention.
FIG. 7 is a perspective view showing an intersection of a horizontal rope and a vertical rope.
FIG. 8 is a perspective view showing an intersecting portion between a horizontal round steel bar and a vertical round steel bar.
FIG. 9 is a schematic perspective view showing a conventional steel frame.
[Explanation of symbols]
1: Steel frame 2: Filling material 3: Water drainage part 4: Driftwood stopper 5: Vertical frame 5: Upper sleeve tube 5A: Downstream frame 5B: Upstream frame 6: Horizontal beam 7: Brace 8: Reinforcement Material 9: Buffer material 10: Horizontal material 11: Driftwood stopper member 12: Horizontal rope 13: Vertical rope 14: Horizontal round steel material 15: Vertical round steel material

Claims (4)

In steel frameworks that are constructed by connecting steel frames filled with intercalation materials such as cobblestones, crushed stones, etc., vertically and horizontally, with water passages formed at the top,
A driftwood stopper is provided in the water passage portion, and the driftwood stopper is configured integrally with the steel frame by extending upward in a vertical frame of the steel frame constituting the bottom portion of the water passage portion. driftwood stop with steel assembly frame, characterized in that it is. The steel framework according to claim 1, wherein the extended longitudinal frame is reinforced by a reinforcing material . The steel framework according to claim 1 or 2, wherein a cushioning material is attached upstream of the driftwood stopper . The steel frame according to any one of claims 1 to 3, wherein the driftwood stopper height is lower than a height of the water passage portion .

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