JP3113445U - fence - Google Patents

Abstract

[PROBLEMS] To provide a fence with a foundation structure suitable for snowy areas and cold areas, to solve problems such as collapse of the fence and damage to the foundation block during snowfall, to obtain a fence with high snow resistance, and to freeze It is an object to obtain a fence excellent in snow resistance and cold resistance strength by preventing the foundation from being damaged.
SOLUTION: A steel pipe pile 8 is driven into the ground to support the support column 1 by this steel pipe pile 8, and the steel pipe pile 8 is driven deeply into the ground (1 m or more), thereby generating geothermal heat. The heat transfer action of the filling 10 inside the pipe leads to the ground surface portion to prevent the base block 9 portion from freezing. The underground has little temperature change in summer and winter and day and night, and even if the ground surface freezes in the winter, the water in the ground does not freeze. This heat that has been kept warm is transferred from the tip of the steel pipe pile 8 to the ground surface through the earth or sand or water inside the pile. If the steel pipe pile 8 is filled with sand, heat transfer from the underground to the ground surface is performed smoothly, and an excellent anti-freezing action is obtained.
[Selection] Figure 2

Description

  The present invention relates to a fence (including a gate attached to the fence), and particularly to a fence characterized by the structure of the foundation supporting the support of the fence. It relates to a fence with a basic structure characterized by.

  The fence is provided with a structure in which a trunk edge is passed to pillars erected on the ground at predetermined intervals, and a wire mesh or corrugated sheet is fixed to a frame formed by the pillars and the trunk edge. The strut is supported by a foundation located on the ground surface or in the ground, and this foundation prevents the fence from collapsing due to wind or snow.

  FIG. 4 is a diagram showing an example of a conventional structure of a foundation in a general fence, where 1 is a fence post, 9 is an independent foundation block, 25 is a ground-wrapped concrete formed by cast-in-place concrete, and 26 supports these. It is a crushed stone layer. The independent foundation block 9 is a concrete secondary product having a height of about 60 cm and having a through hole 16 through which the support column 1 is inserted at the center.

  Construction involves putting crushed stone into the bottom of the hole formed by excavating the ground of the part where the column 1 is erected, and forming the crushed stone layer 26 so that the upper end of the foundation block 9 is slightly protruding from the ground surface, The foundation block 9 is placed thereon, the lower part of the foundation block 9 is surrounded by an on-site formwork, and mortar is poured into the foundation block 25 to make the root-wrapped concrete 25. Then, after the root concrete 25 is hardened, the hole is backfilled, the base end of the support column 1 is inserted into the through hole 16 of the basic block, and the mortar 14 is poured into the gap with the block to fix the support column 1.

FIG. 5 is a diagram showing an example of another conventional structure, in which an independent foundation block 9 having a relatively low height is installed on the ground surface, and the base of the support column 1 is driven into the ground through the through-hole 16. In this structure, mortar is poured into the gap 28 between the support 9 and the support 1 and fixed. When the column 1 is a pipe material, a cap with a sharp tip with a guide blade attached to the tip is attached and driven. The driving depth is about 30 cm to 100 cm, and the interval between fence posts 1 is usually 1.8 m to 2 m.
Utility Model Registration No. 30000282 Utility Model Registration No. 3083653

  At the time of snowfall, the fence with the conventional foundation structure as described above may collapse due to snow accumulation or snow pressure during snow removal, and a fence with a stronger foundation has been desired. Especially in cold districts, while water soaks into the mortar filling part that fixes the support and the foundation block, freezes, cracks in the mortar, and water soaks again and freezes, The foundation block 9 was chipped or cracked, and the support strength of the support was lowered, which caused the fence to collapse due to a snow load.

  This device was made to solve the above-described problems that occur on the foundation of a fence during snowfall, to obtain a fence with a large snow resistance strength, and to prevent damage to the foundation due to freezing. The goal is to obtain a fence with excellent cold resistance.

  In this device, a steel pipe pile 8 is driven into the ground, and the column 1 is supported by the steel pipe pile 8, and the steel pipe pile 8 is driven deeply into the ground (1 m or more), so that the geothermal heat is transferred to the steel pipe pile 8 or The above problem is solved by guiding to the ground surface portion by the heat transfer action of the filling 10 inside the tube and preventing freezing in the ground surface portion fixed to the foundation block 9.

  The underground has little temperature change in summer and winter and day and night, and even if the ground surface freezes in the winter, the water in the ground that has been kept warm does not freeze. This heat that is kept warm is transferred from the tip of the steel pipe pile 8 that has been driven into the ground at a depth of 1 m or more, preferably 1.5 m or more, to the ground surface through the earth or sand or water inside the pile. If the steel pipe pile 8 is filled with sand, heat transfer from the underground to the ground surface is performed smoothly, and the antifreezing action is excellent.

  In an area where vibration and noise during the construction of the fence are not a problem, the steel pipe pile 8 can be driven into the ground using a hammering machine such as a hammer or a vibro. In this case, a cap is attached to the tip of the steel pipe pile. It is necessary to provide a through hole 15 on the side surface of the steel pipe pile 8 so that underground water can flow into the pipe. In an area where vibration and noise are a problem, a hole 12 for inserting the steel pipe pile 8 into the ground is excavated by a drilling machine such as an auger, and the steel pipe pile 8 is inserted into the hole. In this case, the tip of the steel pipe pile 8 can be opened, but even in that case, it is preferable to provide the through hole 15 on the side surface. When the hole 12 into which the steel pipe pile 8 is inserted is excavated with a drill, the heat transfer to the ground surface can be further improved by filling the gap 11 between the excavation hole and the steel pipe pile with the sand 11.

  In order to increase the strength against the collapse of the fence, it is effective to shorten the interval P between the columns 1. The insertion depth H of the steel pipe pile 8 is set to 1.5 m or more, and the columns 1 are arranged at intervals P shorter than the depth H of the steel pipe pile, so that the foundation block 9 is not damaged by freezing, and snow or snow removal It is possible to obtain a fence that does not have the possibility of collapsing due to the snow pressure of the time.

  The fence according to claim 1 of the present application includes a foundation block 9 positioned at the base end of the support column 1 and a steel pipe pile 8 that is fixed to the foundation block and inserted into the ground to a depth that does not freeze the tip. The fence is characterized in that it is provided with the support column erected with the proximal end fixed to the upper end of the steel pipe pile.

  The fence according to claim 2 of the present application is a fence having the above-described configuration, and includes a through hole 15 that communicates the inside and outside of the pipe on the side surface of the steel pipe pile 8, and sand and other granular materials inside the steel pipe pile. 10 is filled.

  The fence according to the invention of claim 3 of the present application is characterized in that in the fence having the above-described configuration, the steel pipe pile 8 has an underground insertion depth H larger than a standing interval P of the support column 1. Is.

  The fence according to claim 4 of the present application is the fence having the above-described configurations, wherein the steel pipe pile 8 is inserted into a drilling hole 12 having a diameter larger than the outer diameter thereof, and between the drilling hole and the steel pipe pile. It is characterized by being filled with sand or other granular material 11.

  With this device, a fence that has sufficient strength to resist snow pressure during snow accumulation and snow removal, and prevents the foundation from being damaged by freezing during cold weather, and therefore, a fence that does not cause a decrease in the strength of the foundation due to freezing. This is effective in providing fences with high strength and durability in snowy or cold regions such as Hokkaido and Tohoku.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a part of a fence, and FIG. 2 is an enlarged front view of a foundation shown with a part omitted. FIG. 3 is an enlarged front view of a foundation having a structure different from that of FIG.

  The fence shown in the figure includes struts 1 erected at intervals of 150 cm, trunk edges 2 and 3 are bridged on the upper and lower sides of adjacent struts, and a steel wire 4 is further stretched as appropriate. Wire mesh 5 is fixed to the door. The column 1 in the figure is a pipe material having a diameter of about 6 cm.

  The foundation 7 that supports the column 1 is formed of a steel pipe pile 8 driven into the ground, an independent foundation block 9 positioned on the ground surface at the upper end thereof, and sand 10 and 11 filled inside and outside of the steel pipe pile 8. ing. The steel pipe pile 8 is inserted into an excavation hole 12 having a depth of 180 cm excavated by an auger, and a gap between the excavation hole is filled with sand 11. A small amount of mortar 13 is introduced into the excavation hole 12 before the steel pipe pile 8 is inserted, and the tip of the steel pipe pile 8 is fixed to the mortar 13 by inserting the steel pipe pile 8 before the mortar solidifies. It is in a state.

  The diameter of the steel pipe pile 8 is about 11.5 cm, and the driving depth is 180 cm. On the side surface of the steel pipe pile 8, through holes 15 having a diameter of 16 to 20 mm are drilled at a pitch of 15 cm to communicate the inside and outside of the pipe. The steel pipe pile 8 is filled with sand 10.

  The independent foundation block 9 is a concrete secondary product having a square shape with a side of 30 cm on a side and a through hole 16 in the center of a thickness of 20 cm. The upper end of the steel pipe pile 8 is inserted from below into the through hole 16 of the independent foundation block, and is made of sheet metal for positioning when the steel pipe pile 8 and the foundation block 9 are fixed with the mortar 14. The metal fittings 17 are connected. The metal fitting 17 is fixed to the steel pipe pile 8 with a through bolt 18 and is fixed to the foundation block 9 with a screw 19 screwed into an insert nut provided on the foundation block 9.

  The base end of the support column 1 is fixed integrally with the steel pipe pile 8 and the foundation block 9 with a mortar 14 while being inserted slightly into the upper end of the steel pipe pile 8. That is, by inserting the lower end of the column 1 into the sand filled in the steel pipe pile 8 and taking out the level, and pouring the mortar 14 into the through hole of the foundation block 9 in that state to finish the upper surface, The foundation block 9 and the column 1 are fixed in an integrated state.

  FIG. 3 shows an example in which the steel pipe pile 8 is driven into the ground with a driving machine, and the tip of the steel pipe pile 8 is attached with a pointed cap 22 with guide blades 21. The through-hole 15 is provided in the side surface of the steel pipe pile 8 like the thing of FIG. 2, and the sand 10 is filled inside. The outer periphery of the steel pipe pile 8 is in direct contact with the soil of the ground. The structure of the part which fixes the upper end of the steel pipe pile 8, the foundation block 9, and the lower end of the support | pillar 1 is the same as the thing of FIG.

  Since the fence configured as described above includes the steel pipe pile 8 that is deeply inserted into the ground, it has a high strength to resist the collapse of the column 1 and the pitch P of the column 1 is inserted into the steel tube pile 8. Since the interval is shorter than the depth H, there is no risk of collapse due to snow accumulation or snow pressure during snow removal. Moreover, since the underground heat | fever is transmitted to the surface part by the sand 10 with which the inside of the steel pipe pile 8 was filled from the front-end | tip part of the steel pipe pile 8 inserted deeply in the ground, and the ground water of the clearance gap, the steel pipe pile 8 It is possible to prevent water from freezing at the connecting part between the support column 1 and the base block 9 and cracking or damaging the mortar and the base block fixing them, and avoiding strength reduction and durability reduction due to freezing. be able to.

Front view showing part of the fence of this device The enlarged front view which abbreviate | omitted a part which shows the 1st example of the foundation which supports a support | pillar Enlarged front view showing the second example Front view showing a first conventional example of a fence foundation Front view showing the second conventional example

Explanation of symbols

1 strut 8 steel pipe pile 9 foundation block
10 sand
11 sand
12 drilling holes
15 Through hole H Underground insertion depth P Standing interval

Claims (4)

  The foundation block (9) located at the base end of the column (1), the steel pipe pile (8) that is fixed to the foundation block and the tip is inserted into the ground to a depth that does not freeze, and the base end A fence, comprising: the pillars fixed to the upper end of the pile.   The fence according to claim 1, further comprising a through hole (15) that communicates the inside and outside of the pipe on a side surface of the steel pipe pile, and the inside of the steel pipe pile is filled with sand or other particulate matter (10).   The fence according to claim 1 or 2, wherein the steel pipe pile has an underground insertion depth (H) that is larger than a standing interval (P) of the columns.   The steel pipe pile is inserted into a drilling hole (12) having a diameter larger than its outer diameter, and sand or other particulate matter (11) is filled between the drilling hole and the steel pipe pile. Or the fence of 3.

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