JP3123761U - A concrete block for civil engineering in which natural stones are floated - Google Patents

Abstract

[PROBLEMS] To provide a concrete block for civil engineering in which natural stones are loosely and densely stabilized, and natural stones need not be carefully selected in size, and natural stones are floated.
[Solution] Using a buoyancy link material that has a notch that can be inserted into and removed from the anchor bar of a natural stone with an anchor, and that floats by buoyancy acting on the concrete that has not yet solidified, the natural stone is made to float from the top surface of the concrete block To form. Furthermore, the size of the buoyancy link material is made larger than the natural stone diameter or diameter, so that the natural stone spacing can be adjusted loosely and densely. The distance between the natural stone and the top surface of the concrete can be adjusted freely.
[Selection] Figure 2

Description

The present invention relates to a concrete block for civil engineering in which natural stones laid on river revetments, nematodes, fishway works, drop works, and belt works are made into a float.

The revetment method that pays attention to the landscape by planting natural stone in concrete is well known (Patent Document 1). Also, the revetment block, fish nest block, and fishway block in which natural stone is floated from the concrete top surface. Some have been devised. (Patent Document 2) Here, the method of floating natural stone is roughly divided into: a vertical hole for anchor burying is formed in hardened concrete, and the natural stone with anchor is inserted into the vertical hole, and mortar or adhesive For example, the anchor is protruded from the hardened concrete, inserted into a natural stone in which a vertical hole for anchor burying is formed, and integrated with mortar or an adhesive.
JP2003-236815 JP2003-245911 Utility model 3069039 JP2002-61149 JP2000-80628

    In these methods (1) and (2), the position of the buried vertical hole formed in the hardened concrete or the position of the anchor protruding from the hardened concrete is fixed in advance. There was a problem of becoming sparse and dense. In addition, in order to provide a product in which the natural stone spacing is sparse and dense, it is necessary to carefully select the size of the natural stone according to the buried vertical hole or the anchor spacing. The present invention seeks to solve this drawback.

    The present invention uses a buoyancy link material that has a notch that can be inserted into and removed from the anchor bar of a natural stone with an anchor, and that floats by buoyancy acting on the concrete that has not yet solidified. To form.

By setting the size of the buoyancy link material to the natural stone diameter or larger than the natural stone, the natural stone spacing can be adjusted loosely and densely. In addition, the thickness of the buoyancy link material is 0 <t ≤ natural stone diameter By doing so, the floating stone distance between the natural stone and the concrete upper surface can be adjusted freely.

    When embedding natural stones with anchors from above buoyant link materials in concrete that has not yet solidified, the size of the buoyancy link material is the natural stone diameter or larger than the diameter of the natural stones, and the natural stone spacing can be adjusted freely and densely. In addition, the thickness of the buoyancy link material is 0 <t ≤ the diameter of natural stone, and the floating stone distance between the natural stone and the top surface of the concrete is adjusted freely, so that the cover is covered with soil, vegetation, and fish nest. It has the effect of creating a space, a fishway space that has an overflow section and a non-overflow section, and a head space.

As shown in FIG. 1, a buoyancy link material 3 having a notch 2 that can be inserted into the anchor muscle 1
Are arranged in advance using the buoyancy of the concrete 4 that has not yet solidified, and then the natural stone 5 with anchor is embedded in the concrete 4 that has not yet solidified. Next, after curing the concrete in the state shown in FIG. 2, the buoyancy link material 3 is removed as shown in FIG. The present invention has the structure as described above. Examples of using this structure are as shown in Fig. 4 Floating stone cover / fish nest bank, Fig. 5 Floating stone fishway, Fig. 6 Floating stone drop / band .

    In FIG. 1, the buoyancy link member 3 has a circular insertion / removable cutout, but the shape thereof may be a polygon having a insertion / removable cutout.

        The material of the buoyancy link material 3 is assumed to be smaller than the unit volume mass 23 kN / m3 of concrete such as urethane foam, polystyrene foam, plastic, and wood.

Perspective view immediately after placing concrete Perspective view during concrete curing Perspective view after hardening of concrete Cross section 1-Flotation stone cover, vegetation, fish nest revetment Sectional drawing 2-Floating stone fishway Sectional view 3-Floating stone drop work and belt work

Explanation of symbols

1. Anchor bar 2. Notch 3. Buoyancy link material 4. Concrete not yet solidified 5. Natural stone with anchor 6. Formwork 7. Concrete under curing 8. Concrete after hardening 9. Covering space 10. Vegetation space 11. Fish nest space 12. Floating stone fish nest block 13. Floating stone cover / vegetation block 14. Fishway space 15. Floating stone fishway block 16. Floating stone drop work / band work block

Claims (1)

The natural stone is formed from the upper surface of the concrete block into a floating stone state by interposing a buoyancy link material with a notch that can be inserted and removed freely between the concrete that has not yet solidified and the natural stone with anchor. Concrete block for civil engineering.

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