WO2009125774A1 - 耐荷材 - Google Patents
耐荷材 Download PDFInfo
- Publication number
- WO2009125774A1 WO2009125774A1 PCT/JP2009/057146 JP2009057146W WO2009125774A1 WO 2009125774 A1 WO2009125774 A1 WO 2009125774A1 JP 2009057146 W JP2009057146 W JP 2009057146W WO 2009125774 A1 WO2009125774 A1 WO 2009125774A1
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- WO
- WIPO (PCT)
- Prior art keywords
- load
- bearing material
- pipe
- steel pipes
- tube
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B5/00—Making ropes or cables from special materials or of particular form
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1092—Parallel strands
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2075—Fillers
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
- E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
- E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0447—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section circular- or oval-shaped
Definitions
- the present invention relates to a load bearing material.
- a protective fence (for example, Patent Document 1) that is provided with a horizontal rope material between the support posts and shielded between the support posts by a wire net and is made of concrete or metal between the support posts.
- a guard fence for example, Patent Document 2 that uses a strut that is positioned by connecting a lower portion of the strut with an installation rope, or a suspension that connects the anchor and the upper and lower portions of the strut with an installation rope.
- Fence-type protective fence for example, Patent Document 3 and the like are known, steel is used for the said post.
- a retaining wall formed on the slope, a main structural member that penetrates the retaining wall and is inserted into a natural ground, and supports a portion protruding from the retaining wall in a cantilever manner, and a main structural member that protrudes from the retaining wall
- a protective structure configured by a floor slab provided between members, and a steel pipe is used as the main structural material.
- steel pipes are used for the members of the protective structure, and in addition, an uncoil type PC steel material covered with a sheath material is disposed on the support of the rockfall prevention fence, and concrete is placed in the steel pipe.
- an uncoil type PC steel material covered with a sheath material is disposed on the support of the rockfall prevention fence, and concrete is placed in the steel pipe.
- There are known products manufactured by filling for example, Patent Document 5
- those in which double steel pipes are filled with a filler, and cement milk or mortar is used as the filler for example, Patent Document 2.
- JP-A-6-173221 JP 2000-248515 A (paragraph 0013) JP-A-8-184014 JP 2001-323416 A JP-A-6-146225 JP-A-9-203036
- a filled steel pipe filled with concrete can improve rigidity compared to a hollow steel pipe.
- an object of the present invention is to provide a load-bearing material having a high energy absorption effect during deformation.
- the present invention comprises a metal outer tube and a plurality of metal inner tubes arranged in the outer tube, and the load-bearing material in which the plurality of inner tubes are positioned and arranged, wherein the outer tube and the inner tube are When the cross section is circular and plastic deformation is caused by a bending moment, the inner tube is deformed into a flat shape.
- the present invention is provided with three or more internal tubes.
- the positioning means for positioning the plurality of inner pipes is a filling material filled between the inner surface of the outer pipe and the outer surface of the inner pipe.
- the outer tube and the inner tube are steel tubes.
- the thickness of the inner tube is smaller than the thickness of the outer tube.
- the filler is a cement-based filler.
- the present invention is arranged such that the outer surfaces of the inner tubes are close to each other.
- the outer surface of the inner tube is close to other inner tubes at two or more locations.
- other internal pipes are arranged within a range surrounded by the plurality of internal pipes arranged so that the outer surfaces are close to each other.
- the outer surface of the inner tube is close to other inner tubes at six or more locations.
- a plurality of the inner tubes are arranged side by side on the inner surface side of the outer tube substantially in parallel with the center line of the cross section of the outer tube.
- three or more inner tubes are arranged side by side substantially parallel to the cross-sectional center line of the outer tube.
- the proof stress is improved by the plurality of inner tubes, and when the load is received, the inner tube is plastically deformed in a cross-section so that the outer tube can be plastically deformed.
- the energy absorption effect is improved without stress concentration.
- the positioning means is a filler, a plurality of inner tubes can be easily positioned by filling the outer tube with the filler.
- outer tube and the inner tube are steel pipes, and the steel pipes are made of a sticky material, even if they are deformed, it is possible to prevent a sudden decrease in yield strength. A stable energy absorption effect can be obtained.
- the inner tube is thinner than the outer tube, the inner tube having a small diameter is easily deformed into a flat shape.
- the filler is a cement filler, it is inexpensive and easy to handle.
- the outer surface of the inner tube is close to the other inner tube at two or more locations and the inner tube hits from both sides, when a load is applied, they deform each other and can absorb energy.
- the other inner pipes are arranged within a range surrounded by the plurality of inner pipes arranged so that the outer surfaces are close to each other, when a load is applied, they are deformed and can absorb energy.
- the outer surface of the inner tube is close to other inner tubes at six or more locations and the inner tubes contact each other, when a load is applied, they deform each other and can absorb energy. Further, in the case of the same diameter, one inner tube can be disposed close to the other six inner tubes, so that the most efficient arrangement is obtained.
- a plurality of the inner tubes are arranged side by side on the inner surface side of the outer tube substantially in parallel with the center line of the cross section of the outer tube, and the plurality of arranged inner tubes are positioned in a tensile region when receiving a load.
- the tensile force can be efficiently handled by three or more inner tubes.
- Example 1 of this invention It is a front view of the load bearing material used for the experiment same as the above. It is explanatory drawing which shows the experimental result of an implementation product same as the above. It is a graph which shows the relationship between a bending moment and a loading point rotation angle same as the above. It is a graph which shows the relationship between the displacement in a loading point, and absorption energy same as the above. It is sectional drawing which shows Example 2 of this invention. It is sectional drawing which shows Example 3 of this invention. It is sectional drawing which shows Example 4 of this invention. It is sectional drawing which shows Example 5 of this invention. It is sectional drawing which shows Example 6 of this invention. It is sectional drawing which shows Example 7 of this invention. It is sectional drawing which shows Example 8 of this invention. It is sectional drawing which shows Example 9 of this invention.
- the load bearing material 1 includes an outer pipe 2 made of a steel pipe, inner steel pipes 3, 3A, 3B, which are a plurality of metal inner pipes arranged in the outer pipe 2, and positioning means.
- a filler 4 filled between an inner surface 21 of the outer tube 2 and an outer surface 31 of the inner steel tube 3 is provided.
- the inner steel pipes 3, 3A, 3B, ... are all steel pipes having the same configuration, and are generally thinner than the outer pipe 2.
- the positioning means may be constituted by a spacer or the like, or the inner steel pipes 3, 3A, 3B... Are inserted into the outer pipe 2 approximately densely by selecting the diameter of the inner steel pipes 3, 3A, 3B. In this case, the inner steel pipes 3, 3A, 3B,.
- the outer pipe 2 and the inner steel pipe 3 are circular in cross section, have a hollow shape, and a plurality of the inner steel pipes 3, 3A, 3B,. It arrange
- one inner steel pipe 3 is arranged at the center of the outer pipe 2, and six inner steel pipes 3A, 3A,... Are arranged so as to be in contact with the outer surface 31 of the inner inner steel pipe 3A.
- the six inner steel pipes 3A, 3A... Are adjacent to each other. Therefore, the central inner steel pipe 3 is in contact with the six inner steel pipes 3A, 3A..., And the central inner steel pipe 3 is located within a range surrounded by the six inner steel pipes 3A, 3A.
- twelve inner steel pipes 3B, 3B,... are arranged so as to surround the six inner steel pipes 3A, 3A ..., and the adjacent inner steel pipes 3B are in contact with each other.
- three inner steel pipes 3B, 3B, 3B are arranged in parallel with the cross-sectional center line S passing through the center of the outer pipe 2, the central inner steel pipe 3B is in contact with the two inner steel pipes 3A, and the inner steel pipes 3B on both sides are arranged.
- 3B is in contact with one internal steel pipe 3A.
- the inner steel pipe 3A is in close contact with the inner steel pipe 3, the adjacent two inner steel pipes 3A, 3A, and the six inner steel pipes 3B, 3B, 3B. Further, as described above, the inner steel pipe 3B at the center of the three inner steel pipes 3B, 3B, 3B arranged in close contact with the four inner steel pipes 3A and the four inner steel pipes 3B, 3B on both sides.
- the internal steel pipes 3B on both sides of the three internal steel pipes 3B, 3B, 3B are in close contact with the three internal steel pipes 3A and the adjacent internal steel pipes 3B, 3B.
- the outer diameter of the inner steel pipes 3, 3 ⁇ / b> A, 3 ⁇ / b> B, 3 ⁇ / b> C is 1/5 or less of the outer diameter of the outer pipe 2.
- a hollow space is used so that the inner steel pipes 3, 3A, 3B can be deformed.
- the load-bearing material 1 becomes lightweight.
- other fillers may be filled as long as the inner steel pipes 3, 3A, 3B can be deformed without necessarily forming a space in which the filler is not filled. That is, the inner steel pipes 3, 3A, 3B may be hollow or may be filled with a deformable filler, and the deformable filler is at least softer than the inner steel pipes 3, 3A, 3B.
- Examples of the filler 4 used as the positioning means include cement-based fillers, such as mortar and concrete, and various other fillers that can be solidified or shaped over time. Can be used.
- the load bearing material 1 is used as a column having a lower portion embedded and fixed to the ground G and an upper portion protruding from the ground portion, as shown in FIG. 2. It can be used for a rock fall protection fence that is erected on G and shielded between the plurality of columns by a net.
- the outer tube 2 is a steel tube having an outer diameter of 318.5 mm and a wall thickness of 6.0 mm
- the inner steel tubes 3, 3A, 3B The wall thickness is 3.2 mm and the filler is mortar.
- the comparative product is a filled steel pipe in which a mortar is filled in a steel pipe having an outer diameter of 318.5 mm and a wall thickness of 6.0 mm without an internal steel pipe.
- Each outer pipe 2 and inner steel pipe 3 are 6 meters.
- the cover body 101 was provided in the both ends of the outer tube
- FIG. 4 is a graph showing the results of supporting both ends of the implemented product and the comparative product and applying a load F to the center thereof.
- the vertical axis represents the moment of the loading point
- the horizontal axis represents the rotation angle ⁇ of the loading point.
- the actual product has an elastic deformation range up to about 400 kN-m
- the comparative product has an elastic deformation range up to about 200 kN-m. It was. This means that when a load exceeding 200 kN-m is applied, strain due to plastic deformation remains even if the load is removed, and when the load is applied again by falling rocks or the like, the proof stress is reduced from the design time.
- the elastic deformation range of the product is wide, for example, after a load of about 200 kN-m is applied, the load is removed, and thereafter, the reliability with respect to the proof stress is high even if the load is applied again. . This is because in a filled steel pipe, when bending occurs, cracks occur in the mortar that is an internal filler on the tensile region side, and even if the load is removed, the strength of the mortar cannot be obtained.
- the energy absorption amount corresponds to the area surrounded by the graph and the axis of moment 0
- the same area of the implementation product is extremely larger than the comparison product, and the rotation angle of the comparison product is 22 deg. While it breaks to a certain extent, it can be seen that the implemented product does not break even if it exceeds 35 deg, and the implemented product is excellent in energy absorption efficiency.
- FIG. 5 is a graph in which the horizontal axis represents the displacement at the load point described above, and the vertical axis represents the absorbed energy, indicating that the implemented product has a larger absorbed energy than the comparative product.
- the comparative steel tube is not only cracked in the mortar and reduced in strength, but also has a cross-sectional deformation of the outer tube 2 that is a steel pipe due to the mortar. Constrained, that is, the outer tube 2 cannot be deformed in the flat direction, and stress concentrates on the cross section on the tensile region side and breaks from here, whereas in the actual product, as shown in FIG. It can be seen that the steel pipe 3 is deformed into a flat shape and absorbs energy, and the outer tube 2 can also be deformed into a flat shape and can efficiently absorb energy as a whole.
- the outer tube 2 and the inner steel tubes 3, 3 ⁇ / b> A, 3 ⁇ / b> B are crushed so that the cross-sectional shape narrows with respect to the direction of the load F and the cross-sectional shape widens in the direction orthogonal to the direction of the load F.
- the amount of deformation of the internal steel pipe is small.
- the internal steel pipes 3, 3A, 3B of the actual product have a diametrical direction. Since it collapses so that the upper and lower centers approach each other, that is, it deforms in a direction so as to be approximately ⁇ , it can be seen that the amount of deformation is large, thereby increasing the amount of energy absorption.
- the outer tube 2 in which the inner steel pipes 3, 3A, 3B are arranged is deformed by bending and the bending strength is reduced even if the cross-sectional shape of the outer tube 2 is crushed. Can be suppressed. Further, the inner steel pipes 3, 3 ⁇ / b> A, 3 ⁇ / b> B are crushed so that the strain is not concentrated on the outer pipe 2. This is because the steel material itself is a sticky material, and even if the cross-sectional shape is crushed and the cross-sectional performance is changed, the yield strength is not rapidly reduced. And it has big energy absorption performance because the cross-sectional shape of the load-bearing material 1 changes.
- the outer pipe 2 and the inner steel pipes 3, 3A, 3B are deformed so that the cross-sectional shape is circular and the vertical direction is short and the horizontal direction is long.
- the vertical length is longer than the horizontal length.
- Deformation is 65% or less, preferably 60% or less. In this case, at least one of the plurality of inner steel pipes 3, 3A, 3B may be deformed to the above range.
- the metal outer tube 2 and the inner steel tubes 3, 3A, 3B which are a plurality of metal inner tubes arranged in the outer tube 2, are provided.
- the outer pipe 2 and the inner steel pipes 3, 3A, 3B have a circular cross section, and plastic deformation is caused by a bending moment caused by a force exceeding a predetermined value.
- the inner steel pipes 3, 3A, 3B are configured to be deformed in a flat shape when they occur, the proof stress is improved by the plurality of inner steel pipes 3, 3A, 3B, and when the load is received, the inner steel pipes 3, 3A , 3B is deformed into a flat shape, so that the outer tube 2 can also be deformed, and the energy absorption effect is improved without local stress concentration on the outer tube 2.
- the positioning means for positioning the plurality of inner steel pipes 3, 3A, 3B includes the inner surface 21 of the outer pipe 2 and the outer surface 31 of the inner steel pipes 3, 3A, 3B. Therefore, the plurality of inner steel pipes 3, 3A, 3B can be easily positioned by filling the outer pipe 2 with the filler 4.
- the outer pipe 2 and the inner steel pipes 3, 3A, 3B are steel pipes, and the steel pipes are made of a sticky material. Can be prevented.
- the inner steel pipe 3, 3A, 3B is smaller than the thickness of the outer pipe 2, the inner steel pipe 3, which has a smaller diameter, is formed. 3A and 3B are easily deformed into a flat shape.
- the filler 4 is a cement-type filler in accordance with the claims, it is inexpensive and easy to handle.
- the internal steel pipes 3, 3A, 3B are formed from both sides. Therefore, when a load is applied, they mutually deform and can absorb energy.
- the other internal steel pipes 3 and 3A are arranged in the range of the plurality of internal steel pipes 3B arranged so that the outer surface 21 is in close proximity according to the claims, the load is increased. When added, it can deform and absorb energy.
- the outer surfaces of the inner steel pipes 3, 3A are close to the other inner steel pipes 3, 3A, 3B at six or more locations, so that the inner steel pipes 3, 3A, 3B When they hit each other and a load is applied, they can deform and absorb energy. Further, in the case of the same diameter, one inner steel pipe 3 can be arranged in the vicinity of the other six inner steel pipes 3A, so that the most efficient arrangement is obtained.
- a plurality of inner steel pipes 3, 3A, 3B are arranged side by side on the inner surface side of the outer pipe 2 so as to be substantially parallel to the cross-sectional center line of the outer pipe 2.
- the load-bearing material 1 is arranged so that a plurality of arranged internal steel pipes 3A, 3B are located in a tensile region when receiving a load. By using it, the internal steel pipes 3A and 3B can counter the tensile force.
- the plurality of inner steel pipes 3, 3A, 3B are densely arranged in the honeycomb shape without gaps, by providing the inner steel pipes 3, 3A, 3B arranged in the honeycomb shape, proof stress and energy Excellent absorption effect.
- FIG. 6 shows a second embodiment of the present invention.
- the same reference numerals are given to the same portions as those of the first embodiment, and detailed description thereof will be omitted.
- the outer tube 2 the central portion is shown.
- An inner steel pipe 3 and six inner steel pipes 3A surrounding the inner steel pipe 3 are arranged, a filler 4 is filled in the outer pipe 2, and the inner steel pipes 3 and 3A are arranged substantially densely.
- the outer diameter of the inner steel pipes 3, 3 ⁇ / b> A is 1/3 or less of the outer diameter of the outer pipe 2.
- two inner steel pipes 3A and 3A are arranged side by side substantially parallel to the cross-sectional center line S of the outer pipe 2. Yes.
- FIG. 7 shows a third embodiment of the present invention.
- the same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof will be omitted.
- the plurality of internal steel pipes 3 and 3A are positioned by configuring the pipe 2 so that the diameter of the pipe 2 is small or the diameter of the internal steel pipes 3 and 3A is large and the internal steel pipe 3A is substantially in contact with the outer pipe 2.
- the outer diameter of the inner steel pipes 3, 3 ⁇ / b> A is 1/3 or less of the outer diameter of the outer pipe 2.
- two inner steel pipes 3A and 3A are arranged side by side substantially parallel to the cross-sectional center line S of the outer pipe 2.
- the inner steel pipe 3A is positioned so as to be substantially in contact with the outer pipe 2, thereby positioning the plurality of inner steel pipes 3 and 3A, and the inner steel pipes 3 and 3A themselves serve as positioning means.
- FIG. 8 shows a fourth embodiment of the present invention.
- the same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted.
- four inner steel pipes 3A are rectangular.
- the two inner steel pipes 3A, 3A are arranged side by side substantially parallel to the cross-sectional center line S of the outer pipe 2, and have the same operations and effects as the above embodiments.
- the outer diameter of the inner steel pipe 3 ⁇ / b> A is 1 ⁇ 2 or less of the outer diameter of the outer pipe 2.
- FIG. 9 shows a fifth embodiment of the present invention.
- the same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof is omitted.
- three inner steel pipes 3A are triangular. The same operation and effect as the above-mentioned each embodiment are produced.
- the outer diameter of the inner steel pipe 3 ⁇ / b> A is 1 ⁇ 2 or less of the outer diameter of the outer pipe 2.
- FIG. 10 shows a sixth embodiment of the present invention.
- the same reference numerals are given to the same portions as those of the above-described embodiments, and the detailed description thereof will be omitted.
- the inner steel pipe 3 is not used, but the filler 4 is filled in the center, and the same operations and effects as in the above embodiments are achieved.
- the inner steel pipe 3 at the center of the outer pipe 2 is omitted, and the center is the central axis of compression and tension when a bending load is applied. Since there are few advantages in terms of strength improvement, the material cost can be reduced.
- FIG. 11 shows a seventh embodiment of the present invention.
- the same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof will be omitted.
- the inner steel pipe 3 and the surrounding six inner steel pipes 3A are not used, the filler 4 is filled in the center, and the inner steel pipes 3A are arranged substantially densely. There is an effect.
- the seven inner steel pipes 3 and 3A on the center side of the outer pipe 2 are omitted, but when the load bearing material 1 is bent, the tensile stress and the compressive stress are greatly applied to the outside of the cross section. Therefore, the strength can be improved efficiently by concentrating and arranging the internal steel pipe 3B in this portion.
- FIG. 12 shows an eighth embodiment of the present invention.
- the same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted.
- six in the first embodiment are described.
- the inner steel pipes 3A are not used, the filler 4 is filled, and the inner steel pipes 3A are arranged almost densely, and the same operations and effects as the above-described embodiments are achieved.
- the outer inner steel pipe 3B can be temporarily fixed by a temporary fixing tool (not shown) with reference to the central inner steel pipe 3, which facilitates manufacturing.
- FIG. 13 shows a ninth embodiment of the present invention.
- the same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof will be omitted.
- the steel pipe 3 is not used and the filler 4 is filled in the center, and the same operations and effects as in the above embodiment are achieved.
- this invention is not limited to the said Example, Various deformation
- steel pipes are used for the outer pipe and the inner pipe.
- the outer pipe and the inner pipe may be made of various metals other than iron, aluminum, stainless steel, or alloys thereof.
- cement-based fillers are exemplified as the filler, but the inner steel pipe may be positioned by filling the filler with a foam material such as a foamed polystyrene resin foamed in situ. Since the foam material can be deformed with a relatively small force in this way, the inner steel pipe may be filled.
- the internal steel pipe of the same diameter and the same thickness was used, thickness may be changed or an internal steel pipe from which a diameter differs may be combined.
- the outer surface of the outer pipe does not necessarily have to be exposed.
- the load resistant material of the present invention may be used for the steel pipe inside the double steel pipe.
Abstract
Description
安定したエネルギー吸収効果が得られる。
2 外管
21 外面
3,3A,3B 内部鋼管(内部管)
31 内面
4 充填材(位置決め手段)
Claims (16)
- 金属製の外管と、この外管内に配置された複数の金属製内部管とを備え、前記複数の内部管を位置決めして配置した耐荷材において、前記外管及び内部管は断面が円形をなし、曲げモーメントによって塑性変形が生じた際、前記内部管が扁平状に変形するように構成したことを特徴とする耐荷材。
- 前記内部管を3本以上備えることを特徴とする請求項1記載の耐荷材。
- 前記複数の内部管を位置決めする位置決め手段が、前記外管内面と内部管外面との間に充填された充填材であることを特徴とする請求項1記載の耐荷材。
- 前記複数の内部管を位置決めする位置決め手段が、前記外管内面と内部管外面との間に充填された充填材であることを特徴とする請求項2記載の耐荷材。
- 前記外管及び前記内部管が鋼管であることを特徴とする請求項1記載の耐荷材。
- 前記外管及び前記内部管が鋼管であることを特徴とする請求項3記載の耐荷材。
- 前記外管の厚さより内部管の厚さが薄いことを特徴とする請求項1記載の耐荷材。
- 前記外管の厚さより内部管の厚さが薄いことを特徴とする請求項3記載の耐荷材。
- 前記充填材がセメント系充填材であることを特徴とする請求項3記載の耐荷材。
- 前記内部管同士の外面が近接するように配置したことを特徴とする請求項1記載の耐荷材。
- 前記内部管同士の外面が近接するように配置したことを特徴とする請求項3記載の耐荷材。
- 前記内部管の外面が他の内部管と2箇所以上で近接することを特徴とする請求項10記載の耐荷材。
- 外面が近接するように配置した複数の前記内部管で囲まれた範囲内に、他の内部管を配置したことを特徴とする請求項10記載の耐荷材。
- 前記内部管の外面が他の内部管と6箇所以上で近接することを特徴とする請求項12記載の耐荷材。
- 前記外管の内面側で、該外管の断面中心線と略平行に前記内部管が複数並んで配置されていることを特徴とする請求項12記載の耐荷材。
- 前記外管の断面中心線と略平行に前記内部管が3本以上並んで配置されていることを特徴とする請求項15記載の耐荷材。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/866,376 US20110002743A1 (en) | 2008-04-07 | 2009-04-07 | Load bearing material |
CN2009801117448A CN101981255A (zh) | 2008-04-07 | 2009-04-07 | 耐负荷材料 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-099799 | 2008-04-07 | ||
JP2008099799A JP4324977B1 (ja) | 2008-04-07 | 2008-04-07 | 耐荷材 |
Publications (1)
Publication Number | Publication Date |
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WO2009125774A1 true WO2009125774A1 (ja) | 2009-10-15 |
Family
ID=41149073
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/057146 WO2009125774A1 (ja) | 2008-04-07 | 2009-04-07 | 耐荷材 |
Country Status (5)
Country | Link |
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US (1) | US20110002743A1 (ja) |
JP (1) | JP4324977B1 (ja) |
KR (1) | KR20100138870A (ja) |
CN (1) | CN101981255A (ja) |
WO (1) | WO2009125774A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109235778A (zh) * | 2018-11-22 | 2019-01-18 | 福泉市发隆钢构有限公司 | 一种钢管混凝土柱 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5903792B2 (ja) * | 2011-07-25 | 2016-04-13 | 株式会社プロテックエンジニアリング | 耐荷材 |
CN104366865A (zh) * | 2014-11-25 | 2015-02-25 | 力帆实业(集团)股份有限公司 | 摩托车增强头盔 |
EP3124808B1 (en) * | 2015-07-29 | 2018-02-28 | Airbus Operations GmbH | Tie rod and method for manufacturing a tie rod |
JP6023914B1 (ja) * | 2015-12-25 | 2016-11-09 | 株式会社プロテックエンジニアリング | 耐荷材 |
JP7188771B2 (ja) | 2019-12-25 | 2022-12-13 | 株式会社カクタスコーポレーション | 受け台構造及びこれを備えたキャリーカート |
CN112411221A (zh) * | 2020-11-10 | 2021-02-26 | 贵州钢绳股份有限公司 | 一种填充式压实股钢丝绳制造方法 |
RU2763490C1 (ru) * | 2021-06-01 | 2021-12-29 | Общество с ограниченной ответственностью "ИНТЕККО-СИТИ" | Опора для размещения оборудования |
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US2050298A (en) * | 1934-04-25 | 1936-08-11 | Thos Firth & John Brown Ltd | Metal reducing method |
JPH06173180A (ja) * | 1990-04-02 | 1994-06-21 | Kyokuto Kogen Concrete Shinko Kk | ステーケーブル、及びその構成要素の改良 |
WO2000053850A1 (fr) * | 1999-03-05 | 2000-09-14 | Vinci Construction Grands Projets | Gaine pour cable a plusieurs torons paralleles et hauban muni d'une telle gaine |
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US4351867A (en) * | 1981-03-26 | 1982-09-28 | General Electric Co. | Thermal insulation composite of cellular cementitious material |
DE8633630U1 (ja) * | 1986-12-16 | 1987-05-14 | Dietz, Volker, 8011 Baldham, De | |
US6199595B1 (en) * | 1998-06-04 | 2001-03-13 | Jerry G. Baker | Insulated marine pipe apparatus and method of installation |
US6116290A (en) * | 1999-03-16 | 2000-09-12 | J. Ray Mcdermott, S.A. | Internally insulated, corrosion resistant pipeline |
EP1385245A1 (en) * | 2002-07-26 | 2004-01-28 | Alcatel | Self-supporting cable duct |
NO324787B1 (no) * | 2003-06-16 | 2007-12-10 | Aker Subsea As | Undersjøisk kontrollkabel/produksjonsledning |
CN2769339Y (zh) * | 2005-01-27 | 2006-04-05 | 牛湛 | 高速公路防护栏 |
US20060272727A1 (en) * | 2005-06-06 | 2006-12-07 | Dinon John L | Insulated pipe and method for preparing same |
-
2008
- 2008-04-07 JP JP2008099799A patent/JP4324977B1/ja active Active
-
2009
- 2009-04-07 US US12/866,376 patent/US20110002743A1/en not_active Abandoned
- 2009-04-07 KR KR1020107016428A patent/KR20100138870A/ko not_active Application Discontinuation
- 2009-04-07 CN CN2009801117448A patent/CN101981255A/zh active Pending
- 2009-04-07 WO PCT/JP2009/057146 patent/WO2009125774A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2050298A (en) * | 1934-04-25 | 1936-08-11 | Thos Firth & John Brown Ltd | Metal reducing method |
JPH06173180A (ja) * | 1990-04-02 | 1994-06-21 | Kyokuto Kogen Concrete Shinko Kk | ステーケーブル、及びその構成要素の改良 |
WO2000053850A1 (fr) * | 1999-03-05 | 2000-09-14 | Vinci Construction Grands Projets | Gaine pour cable a plusieurs torons paralleles et hauban muni d'une telle gaine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109235778A (zh) * | 2018-11-22 | 2019-01-18 | 福泉市发隆钢构有限公司 | 一种钢管混凝土柱 |
Also Published As
Publication number | Publication date |
---|---|
US20110002743A1 (en) | 2011-01-06 |
JP2009249930A (ja) | 2009-10-29 |
KR20100138870A (ko) | 2010-12-31 |
JP4324977B1 (ja) | 2009-09-02 |
CN101981255A (zh) | 2011-02-23 |
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