WO2015076429A1 - Barre d'acier comprenant une tête de fixation et son procédé de fabrication - Google Patents

Barre d'acier comprenant une tête de fixation et son procédé de fabrication Download PDF

Info

Publication number
WO2015076429A1
WO2015076429A1 PCT/KR2013/010582 KR2013010582W WO2015076429A1 WO 2015076429 A1 WO2015076429 A1 WO 2015076429A1 KR 2013010582 W KR2013010582 W KR 2013010582W WO 2015076429 A1 WO2015076429 A1 WO 2015076429A1
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcing bar
rebar
fixing plate
fixing
cross
Prior art date
Application number
PCT/KR2013/010582
Other languages
English (en)
Korean (ko)
Inventor
이재호
Original Assignee
(주)세종알앤디
이재호
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)세종알앤디, 이재호 filed Critical (주)세종알앤디
Priority to PCT/KR2013/010582 priority Critical patent/WO2015076429A1/fr
Publication of WO2015076429A1 publication Critical patent/WO2015076429A1/fr

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction

Definitions

  • the present invention relates to a reinforcing bar provided with a fixing head and a method for manufacturing the same, and more specifically, to improve the fixing ability of reinforcing bars used in reinforced concrete or steel reinforced concrete structures, and to facilitate reinforcing bars.
  • the present invention relates to a rebar provided with a fixing head and a method of manufacturing the same.
  • the tensile force generated in the reinforced concrete structure, etc. are mainly received by the concrete, the tensile force can be simplified to be in charge of the reinforcement.
  • the reinforcing bars must be settled in the concrete at an appropriate length to accommodate the tensile forces generated.
  • the overlapping lengths of the connecting bars should be sufficiently secured.
  • the fixing method of the reinforcing bar can be divided into bending anchorage (Bending Anchorage) and mechanical anchorage (Mechanical Anchorage) according to the geometric characteristics of the fixing portion.
  • the joints of the reinforcing bars are used, such as the joints to secure the prescribed joint length, mechanical screw joints using reinforcing bars or couplers in the field.
  • 1 is a view for explaining an example of the bending anchorage in the fixing method of the rebar.
  • a representative example of the bending anchorage is defined as 90 ° ⁇ (a) of FIG. 1 (a) ⁇ , 135 ° ((b) ⁇ of the end 1 'of the reinforcing bar 1 to fix the reinforcing bar. It is a conventional system which bends in various angles, such as 180 degrees (FIG. 1 (c)), and reinforces in concrete.
  • such bending anchorage In order to secure the anchoring capacity of the reinforcing bar, such bending anchorage must secure the anchoring length required by the design standards.
  • a bending anchorage has a problem in that the reinforcement work is very difficult in the part where the reinforcement is concentrated, and the reinforcement ability of the reinforcing bar is insufficient due to the inability of placing concrete due to the narrow reinforcing bar spacing.
  • FIG. 2 is a view for explaining an example of a mechanical anchor in the fixing method of the rebar.
  • the mechanical anchorage is typically anchored to concrete with a member having an end head called an anchor.
  • Such a mechanical anchorage is generally achieved by coupling the head 2 that forms the anchor to the end of the rebar 1.
  • the head 2 is joined to the end of the reinforcing bar 1 by friction welding (FIG. 2 (a)).
  • the end of the reinforcing bar 2 is heated and pressurized in the axial direction to form a circular head ( 2) in one-piece form (FIG. 2B), in which a stud having a stem and a head is directly butt welded to a reinforcing bar, and a thread is provided at the end of the reinforcing bar 1.
  • FIG. 2B The form of screwing the nut which processes and head functions is proposed.
  • Republic of Korea Patent Publication No. 10-0907398 Manufacturing method of reinforcing bar with a fixing head
  • a method of manufacturing a reinforcing bar with a fixing head comprising a step of integrally forming an enlarged diameter portion that becomes a fixing head by performing hot upsetting to plastically deform so as to increase the outer diameter, wherein the temperature of the end region of the reinforcing bar is reduced in cross section.
  • the temperature of the part separated 2.0 axially from the rebar's cross-section is less than the melting point of the reinforcing material at 1300 ° C or more, and the temperature of the part separated 5.0 axially from the cross-section of the rebar. It proposes the technique of heating so that it may be more than Ac3 transformation point of reinforcing steel material to 1200 degrees C or less.
  • Korean Patent Publication No. 10-1122122 "Reinforcing bar connection device for head reinforcement" together with the upper and lower head reinforcement of the reinforced concrete beam is disposed at a certain angle on one side of the column head of the reinforced concrete column by concrete pouring construction
  • the reinforcing bar connecting device for connecting the head reinforcement coupled to the upper and lower head reinforcement of a predetermined length disposed on one side of the reinforcement concrete pillar, locking head means for increasing the connection strength to the end side of the head reinforcement
  • the technique to be equipped is proposed.
  • Korean Patent Laid-Open Publication No. 10-2011-0058622 "Wedge-type reinforcing bar fixing structure using a plate-shaped fixing member" is fixed to the wedge member of various forms on the protrusion of the deformed reinforcing bar, and also various outer peripheral edges of the wedge member There is proposed a technique for fixing the coupling member in the wedge type.
  • the bending anchorage and the mechanical anchorage according to the prior art have a limitation in improving the anchorage ability of the rebar because the local operating range of the local pressure stress can not be limited depending on the diameter of the reinforcement or the stem. And, there is a problem that the limit of such fixing capacity can not support the high strength of the head rebar.
  • the present invention is proposed to improve the problems of the prior art, a new that can improve the anchorage capacity of the reinforcing steel used in reinforced concrete (RC) or steel reinforced concrete (SRC) structure, etc. It is an object to provide a reinforcing bar provided with a fixing head of the form.
  • the present invention is able to form a cross-sectional circumferential length of the reinforcing bar in contact with the fixing head longer than the conventional method compared to the prior art to reduce the local pressure stress acting on the concrete to improve the anchoring capacity of the rebar It is an object to provide a reinforcing bar provided with a fixing head of the form.
  • an object of the present invention is to provide a reinforcing bar provided with a new type of fixing head to facilitate the reinforcing bars using the reinforcing bar provided with a fixing head.
  • the present invention by using a reinforcing bar provided with a fixing head to enable bolted coupling through the long hole even when the center axis of the two bars to be jointed when the reinforcing operation does not coincide, so that the reinforcement operation can be convenient
  • An object of the present invention is to provide a reinforcing bar provided with a fixing head of a new type.
  • the present invention allows a relatively long cross-sectional length of the reinforcing bar in contact with the fixing head compared to the prior art to reduce the local pressure stress acting on the concrete to improve the fixing ability of the reinforcing bar
  • the object of the present invention is to provide a method for manufacturing a rebar provided with a new type of fixing head to increase the convenience of manufacturing.
  • the reinforcing bar 30 the reinforcing bar 30;
  • a reinforcing bar part 40 formed integrally with the reinforcing bar 30 at an end of the reinforcing bar 30 and having a cross-sectional perimeter length longer than the cross-sectional perimeter length of the reinforcing bar 30;
  • a fixing plate (50) formed to have an area larger than the cross-sectional area of the rebar deformation portion (40) and fixed to an end of the rebar deformation portion (40);
  • the cross sectional circumferential length of the end 42 of the rebar deformable portion 40 formed on the fixing plate 50 has a length longer than the circumferential circumferential length of the reinforcing bar 30 so that the local pressure stress acting on the concrete is increased. To be lowered.
  • the reinforcing bar 40 is formed by changing the shape of the cross-section gradually from the end of the reinforcing bar 30, and the first forming part 41a,
  • the shape of the cross section from the end of the first molding portion 41a to the end 42 of the rebar deformation portion 40 may be provided with a second molding portion 41b.
  • the first molding part 41a of the reinforcing bar 40 is formed to have a slope gradually reduced from the end of the reinforcing bar 30.
  • an upper and lower surface 43a formed to have an inclination gradually expanding from the end of the reinforcing bar 30 and the second molding part 41b of the reinforcing bar part 40 may include the first molding part ( Front and rear surfaces 42b, which are maintained in the same cross-sectional shape from the end of the front and rear surfaces 42a of 41a to the end 42 of the reinforcing bar portion 40, and the upper and lower surfaces 43a of the first molding portions 41a.
  • the upper and lower surfaces 43b, which are maintained in the same cross-sectional shape, may be provided from the end of the bar to the end 42 of the rebar deformation unit 40.
  • the reinforcing bar 40 is disposed on the central axis with respect to the width (W) direction of the fixing plate 50, the fixing plate 50 is the reinforcing bar It is further provided with a bolt hole 56 formed to be disposed on both sides with respect to the deformable portion 40, it can be bolted through the bolt hole 56 when the reinforcing bar.
  • the bolt hole 56 is formed as a long hole having a long length on the central axis, the central axis is inclined at a predetermined angle with respect to the vertical direction, In case of reinforcing bar reinforcement, even if the central axis of the reinforcing bar is inconsistent, it can be easily combined.
  • the reinforcing bars 40 having a cross-sectional perimeter longer than the cross-sectional perimeter of the reinforcing bar 30 is formed integrally with the reinforcing bar 30 at the end of the reinforcing bar 30 Processing step;
  • the welding step of welding the end of the reinforcing bar 40 is fixed to the fixing plate 50.
  • the fixing plate processing step includes forming bolt holes 56 at both sides of the central axis with respect to the width (W) direction of the fixing plate 50. Further, in the welding step, the rebar deformable portion 40 may be disposed on the central axis with respect to the width W direction of the fixing plate 50 to be welded to the fixing plate 50.
  • the cross-sectional circumferential length of the end portion 42 of the reinforcing bar deformation portion 40 formed on the fixing plate 50 is the cross-sectional circumferential length of the reinforcing bar 30.
  • the area of local pressure stress is increased by having a longer length so that the local pressure stress on the concrete of the fixing head is relatively lower than that of the prior art, and thus the anchoring performance of the reinforcing bar is very improved. Therefore, the construction is simpler and the reinforcing length of the reinforcing bar is much shorter than that of the conventional method of bending or mechanical fixing.
  • the fixing performance is improved compared to the prior art, it can be effectively used even in a higher strength reinforcing bar than the conventional mechanical fixing device.
  • the reinforcing bar provided with the fixing head according to the present invention is a bolt hole 56 is formed as a long hole having a long length on the central axis, the central axis is inclined at a predetermined angle with respect to the vertical direction, Even when the central axis of the double reinforcing bar is inconsistent, the coupling is easy.
  • the manufacturing method of the reinforcing bar provided with a fixing head forms a fixing plate 50 by cutting the plate provided in a variety of standards, it is easy and economical welding method with the reinforced bar (40) Etc.) to produce a reinforcing bar provided with a fixing head, and has the advantage of lowering the manufacturing cost while ensuring the convenience of manufacturing.
  • 1 is a view for explaining an example of a bending anchorage in the fixing method of the rebar
  • FIG. 2 is a view for explaining an example of a mechanical anchor in the fixing method of the rebar
  • Figure 3 is a perspective view for explaining a reinforcing bar with a fixing head and a method for manufacturing the same according to the spirit of the present invention
  • Figure 4 is a side view for explaining the reinforcing bar with a fixing head according to the technical idea of the present invention by cutting a portion along AA 'of Figure 3 and a method of manufacturing the same.
  • FIG. 5 is a perspective view for explaining a reinforcing bar provided with a fixing head and a method of manufacturing the same according to an embodiment of the present invention
  • Figure 6 is a side view and a plan view for explaining the reinforcing bar with a fixing head and a method for manufacturing the same according to a preferred embodiment of the present invention
  • FIG. 7 is a view for explaining a rebar provided with a fixing head according to another embodiment of the present invention.
  • FIG. 8 is a view for explaining the joint form of the reinforcing bar provided with a fixing head according to an embodiment of the present invention.
  • FIG. 9 is a view for explaining the form of applying the bending anchorage and mechanical anchorage in the prior art and the operating range of the local pressure stress of the reinforcing bar provided with the anchoring head according to the present invention.
  • FIG. 5 is a perspective view illustrating a reinforcing bar provided with a fixing head and a method of manufacturing the same according to a preferred embodiment of the present invention
  • FIG. 6 illustrates a rebar provided with a fixing head and a method of manufacturing the same according to a preferred embodiment of the present invention. It is a side view and a top view for demonstrating.
  • 6A is a front view of the reinforcing bar provided with the fixing head shown in FIG. 5
  • FIG. 6B is a plan view of the rebar provided with the fixing head shown in FIG. 5.
  • Figure 7 is a view for explaining a rebar provided with a fixing head according to another embodiment of the present invention.
  • the reinforcing bar 10 provided with the fixing head includes a fixing plate having a reinforcing bar 30, a reinforcing bar part 40, and a fixing plate 50.
  • the cross-sectional circumference of the end 42 of the reinforcing bar portion 40 formed on the 50 to have a length longer than the cross-sectional circumference of the reinforcing bar 30 to increase the area where the local pressure stress is applied, the prior art Compared to this, the local pressure stress on the concrete of the fixing head is relatively lowered, thereby improving the fixing performance of the reinforcing bar in the concrete.
  • the rebar deformation portion 40 is integrally formed with the rebar 30 at the end of the rebar 30.
  • the rebar deformation portion 40 is gradually changed from the end of the reinforcing bar 30 having a circular cross section (cross section is the same as the cross section of the rebar), the cross-sectional circumference length longer than the cross-sectional circumference length of the reinforcing bar 30 It is formed to have.
  • the end 42 of the rebar deformable portion 40 and the upper surface 52 of the fixing plate 50 have a flat surface and form an area in which the local pressure stress is applied.
  • the height (H) of the fixing plate 50 and the end 42 of the reinforcing bar deformable portion 40 are formed to be the same to each other to facilitate the welding operation.
  • the end portion 42 of the reinforcing bar deformable portion 40 formed integrally with the end of the rebar 30 is fixed to the fixing plate 50.
  • the fixing plate 50 is formed to have an area (W ⁇ H, preferably 10 times or more) larger than the cross-sectional area of the reinforcing bar deformable part 40 and is fixed to the end of the rebar deforming part 40.
  • the fixing plate 50 has a smaller area than the cross-sectional area of the reinforcing bar portion 40, there is a problem that the fixing ability is almost lost.
  • the reinforced deformation portion 40 has a gradual cross-sectional change through the first molding portion 41a, and a flat end portion 42 is formed through the second molding portion 41b.
  • the first shaping portion 41a of the reinforcing bar 40 is formed to gradually change the shape of the cross-section from the end of the reinforcing bar 30 (at this time, as shown in (a) of FIG.
  • the shape of the cross-section of the second molding portion 41b from the end of the first molding portion 41a to the end 42 of the reinforcing bar portion 40 remains the same.
  • the reinforcing bar 10 provided with the fixing head according to the present embodiment has a circular cross section at the end portion 42 of the reinforcing bar portion 40 while the first molded part 41a, which is mainly deformed, has a small change in abrupt cross section.
  • the zone in which the local pressure stress of greater length than the outer circumferential length of the rebar 30 is applied is formed. That is, in the present embodiment, as shown in FIG. 6B, the first molding part 41a gradually decreases the slope w2 at which the front and rear surfaces 42a are gradually reduced from the end of the reinforcing bar 30.
  • the upper and lower surfaces 43a have an inclination (h2 gradually expanding) gradually expanding from the end of the reinforcing bar 30.
  • the second molding portion 41b has a front and rear surface 42b having an end portion of the front and rear surfaces 42a of the first molding portion 41a so that the end portion 42 of the rebar deformation portion 40 has a flat surface. From the end of the upper and lower surfaces 43a of the first molding portion 41a to the end 42 of the first and second reinforcing portions 40a. Up to 42) in the same cross-sectional shape. That is, the cross-sectional size of the front and rear surfaces 42a constituting the width w3 and the upper and lower surfaces 43b constituting the height h3 is such that the second molding portion 41b has a reinforcing bar portion (from the end of the first molding portion 41a). It is formed to the same cross-sectional size up to the end 42 of the 40.
  • the rebar deformable portion 40 and the fixing plate 50 is preferably formed in a cross-section as described above for the convenience of manufacturing, as shown in Figure 7, in various forms Modifications can be applied, and modifications of this form will also be made under the technical idea of the present invention.
  • FIG. 7 shows an example in which the fixing plate 50 is formed of a rectangular plate material and the reinforcing bar portions 40 are formed crosswise (+) (40a, 40b).
  • the fixing plate 50 forms the fixing plate 50 as a circular plate material, and the reinforcing bar portion 40 is formed radially from the center of the reinforcing bar 30 (40a, 40b, 40c, 40d, 40e, 40f). , 40g).
  • the fixing plate 50 has shown an example of applying a plate of a single thickness, but such a fixing plate 50 may be applied to a plate of which the thickness is changed. Of course, this change in thickness will be on the opposite side of the weld face.
  • the reinforcing bar 10 provided with the fixing head is easier to construct than the conventional fixing method by the fixing or mechanical fixing device.
  • Rebar settling length can be much shorter.
  • the fixing performance is improved compared to the prior art, it can be effectively used even in a higher strength reinforcing bar than the conventional mechanical fixing device.
  • the reinforcing bar 10 is provided with a fixing head according to a preferred embodiment of the present invention has a configuration of the fixing head, as shown in Figure 8, through bolting (bolting) by the bolt (90) and nut Reinforcing bar is characterized in that it is possible to.
  • a bolt hole 56 is formed in the fixing plate 50 of the reinforcing bar 10 provided with the fixing head according to the present embodiment.
  • the reinforcing bar portion 40 is disposed on the central axis with respect to the width W direction of the fixing plate 50 to be fixed to the fixing plate 50, and the bolt hole of the fixing plate 50 is formed.
  • 56 is disposed on both sides with respect to the bar deformation portion 40 (wherein, the bolt hole 56 may be disposed symmetrically or asymmetrically with respect to the width W direction of the fixing plate 50).
  • Figure 8 is a view for explaining the joint form of the reinforcing bar is provided with a fixing head according to an embodiment of the present invention
  • Figure 8 (a) is a double reinforcing bar with a bolt 90 by applying a long bolt hole 56
  • (b) is a view for explaining the action of the bolt hole 56 when the bolt 90 is coupled.
  • the bolt hole 56 is formed as a long hole having a long length on the central axis (refer to the central axis of the bolt hole 56), the vertical direction (fixing plate 50) Since the central axis is formed to be inclined at a predetermined angle with respect to the reference ⁇ , even when the central axis of the positive reinforcing bars are inconsistent, the coupling is easy.
  • the reinforcing bar 10 provided with the fixing head according to the present embodiment can be easily connected to the reinforcing bar in the field, unlike the reinforcing bar to which the fixing device according to the prior art is applied.
  • the method for manufacturing a rebar having a fixing head forms a fixing plate 50 by cutting a plate provided in various standards, and welds the reinforcing bar 40 to the reinforcing bar 40. It is characterized in that the manufacturing cost can be lowered while ensuring the convenience of manufacturing by manufacturing a rebar provided with a fixing head formed by connecting the fixing plate 50 to the end of 30).
  • the method of manufacturing a rebar having a fixing head includes a rebar deformation part processing step, a fixing plate processing step, and a welding step.
  • the rebar deformation part processing step by pressing the end of the reinforcing bar 30, the rebar deformation unit 40 having a cross-sectional circumferential length longer than the cross-sectional circumferential length of the reinforcing bar 30 is the rebar ( 30) to be integrally formed.
  • the fixing plate processing step the fixing plate 50 is formed of a flat plate to have an area (W ⁇ H, preferably 10 times or more) larger than the cross-sectional area of the reinforcing bar portion 40.
  • the bolt hole 56 is formed to be symmetrical to both sides of the central axis with respect to the width (W) direction of the fixing plate 50 to facilitate reinforcing the reinforcement through bolting later.
  • the rebar deformable portion 40 and the fixing plate 50 separately prepared as described above are completed by welding the ends of the rebar deforming portion 40 to be fixed to the fixing plate 50.
  • the rebar deformable portion 40 is disposed on the central axis with respect to the width W direction of the fixing plate 50 to be welded to the fixing plate 50.
  • the end 42 of the rebar deformable portion 40 is fixed to the fixing plate 50 by welding.
  • Various types of welding such as electric resistance welding and friction welding, as well as general arc welding may be applied. .
  • FIG. 9 is a view for explaining the form of applying the bending anchorage and mechanical anchorage in the prior art and the operating range of the local pressure stress of the reinforcing bar provided with the anchoring head according to the present invention.
  • Figure 9 (a) shows a working range (L1) of the local pressure stress
  • Figure 9 (b) shows the operating range (L2) of the local pressure stress when a mechanical anchorage formed by joining the head 2 to the end of the reinforcing bar 1 by friction welding is applied as shown in FIG.
  • FIG. 9 (c) is applied to a mechanical anchorage in which an end of the reinforcing bar 2 is heated and pressurized in an axial direction to generate a circular head 2 integrally, as shown in FIG. 2 (b).
  • Figure 9 (d) shows the operating range of local pressure stress (L4) when the reinforcing bar is provided with a fixing head according to a preferred embodiment of the present invention Is showing.
  • the fixing ability of the bending reinforcement method (applied bending anchorage) and the reinforcement method with anchor head (applied mechanical anchorage) is closely related to the local pressure stress acting on the concrete.
  • the fixing mechanism (mechanism) of the reinforcement reinforced in reinforced concrete or steel reinforced concrete structure first, the concrete acupressure is generated under the anchorage (Anchorage). That is, as shown in Figure 9, the tensile force is applied in the reinforcement (1) direction (arrow direction), the concrete acupressure stress is generated under the anchorage (Anchorage). As the tensile force increases, the concrete local pressure stress rises, and the concrete local pressure breakage occurs (in particular, in the areas L1, L2, L3, and L4). At this time, a slip is generated in the anchorage. If the anchoring of the reinforcing bars is not stable, cracks are generated in the concrete of the anchorage, which leads to expansion and destruction of concrete cracks. .
  • the bending reinforcement method has a high local acupressure inside the bent portion such that the operating range (L1) of the local pressure stress is less than half (0.5 ⁇ D) of the cross-sectional perimeter length of the reinforcing bar (1)
  • Structural weaknesses that produce stress require additional reinforcement of reinforcing bars or through reinforcing bars (partial mechanical anchorage). This requires a relatively long anchorage length to reinforce the adhesion. In addition, it may be accompanied by a construction inconvenience to wrap around the flexural rebar.
  • the operating range (L4) of the local pressure stress of the reinforcing bar deformable portion 40 so as to have about 2 ⁇ D twice the circumferential length of the rebar cross section.
  • the cross-sectional circumferential length (here 2H) (the cross-sectional circumferential length of the end 42 of the reinforcing bar deformable portion 40) can be increased.
  • FIG. 3 is a perspective view illustrating a reinforcing bar provided with a fixing head and a method of manufacturing the same according to the technical idea of the present invention
  • FIG. 4 is a part cut along the line AA ′ of FIG. It is a side view for demonstrating the rebar provided with the fixing head, and its manufacturing method.
  • the reinforcing bar 10 provided with the fixing head according to the present invention basically has an end of the reinforcing bar 30 having a circular cross section whose length is longer than the cross-sectional perimeter of the reinforcing bar 30.
  • the reinforcement deformation portion 40 having a circumferential length so as to be fixed to the fixing plate 50, the local area of the local pressure stress has a relatively large size compared to the prior art so that the overall low local to the concrete in the fixing head Acupressure stress is characterized in that to increase the fixing effect.
  • the reinforcing bar 10 provided with the fixing head according to the present invention includes a reinforcing bar 30, a reinforcing bar part 40, and a fixing plate 50.
  • the reinforcing bar 30 is a general reinforcing bar used in a reinforced concrete structure or steel reinforced concrete structure.
  • Reinforcing bar 40 is formed integrally with the reinforcing bar 30 at the end of the reinforcing bar 30, it is formed to have a cross-sectional peripheral length longer than the cross-sectional peripheral length of the reinforcing bar 30.
  • Such rebar deformation portion 40 is formed into a thin plate shape by pressing the end of the rebar 30 having a circular cross section is formed integrally with the rebar 30.
  • the fixing plate 50 is formed to have an area (W ⁇ H, preferably 10 times or more) larger than the cross-sectional area of the rebar deformation portion 40 and is fixed to the end 42 of the rebar deformation portion 40.
  • the reinforcing bar 10 having the fixing head according to the present invention has a cross-sectional perimeter of the end 42 of the reinforcing bar 40 formed on the fixing plate 50 than the cross-sectional perimeter of the reinforcing bar 30. By having a long length, the area under which the local pressure stress is applied is increased to improve the anchoring performance of the reinforcing bar in the concrete.
  • Reinforcing bar 10 equipped with a fixing head preferably forms the end of the reinforcing bar 30 to form a reinforcing bar 40, and then separately processed (cutting the plate material provided to a constant size typically) Or it is manufactured by welding the end of the reinforced bar portion 40 to the fixing plate 50 formed by molding (forging or pressing).
  • the method of forming the fixing head by fixing the end portion of the reinforcing bar deformable portion 40 to the fixing plate 50 may be a method of integrally molding using a single material, but fixing according to the present invention.
  • Reinforcing bar 10 provided with a head is preferably formed to the end of the reinforcing bar 30 to form a reinforcing bar deformable portion 40, so as to increase the convenience of manufacturing and lower the manufacturing cost, and separately formed fixing plate 50 To weld the two components together.
  • the reinforcing bar provided with the fixing head according to the present invention and a method for manufacturing the same have a fixing head different from the conventional technology in which a range of local pressure stress is automatically determined (rebar or stem circumferential length) when the diameter of the reinforcing bar is determined in common.
  • a range of local pressure stress is automatically determined (rebar or stem circumferential length) when the diameter of the reinforcing bar is determined in common.
  • Reinforcing bars with a fixing head and a method for manufacturing the same according to the present invention are used in reinforced concrete or steel reinforced concrete structures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

La présente invention concerne une barre d'acier comprenant une tête de fixation, utilisée dans des structures en béton armé ou en béton armé à charpente d'acier, et son procédé de fabrication. Ladite barre d'acier (10) comprenant une tête de fixation, présente une partie de déformation (40) de barre d'acier dont le périmètre de section transversale est supérieur au périmètre de section transversale d'une barre d'acier (30). Ladite partie de déformation est formée à l'extrémité de la barre d'acier (30) et fixée à une plaque de fixation (50), de telle manière que la plage de travail de la contrainte de compression locale est relativement supérieure que celle qui est obtenue selon l'état de la technique et une faible contrainte est appliquée à la tête de fixation dans son ensemble de façon à améliorer l'effet de fixation. Ladite barre d'acier (10) comprenant une tête de fixation est fabriquée de telle manière que la partie de déformation (40) de la barre d'acier est formée par moulage de l'extrémité de la barre d'acier (30) puis par soudure de l'extrémité de la partie de déformation (40) de la barre d'acier à la plaque de fixation (50) qui est formée par un procédé d'usinage ou de moulage distinct, de manière à améliorer la facilité de fabrication et à réduire les coûts de fabrication.
PCT/KR2013/010582 2013-11-20 2013-11-20 Barre d'acier comprenant une tête de fixation et son procédé de fabrication WO2015076429A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2013/010582 WO2015076429A1 (fr) 2013-11-20 2013-11-20 Barre d'acier comprenant une tête de fixation et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2013/010582 WO2015076429A1 (fr) 2013-11-20 2013-11-20 Barre d'acier comprenant une tête de fixation et son procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2015076429A1 true WO2015076429A1 (fr) 2015-05-28

Family

ID=53179685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/010582 WO2015076429A1 (fr) 2013-11-20 2013-11-20 Barre d'acier comprenant une tête de fixation et son procédé de fabrication

Country Status (1)

Country Link
WO (1) WO2015076429A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140230360A1 (en) * 2011-09-21 2014-08-21 Lehigh University Ductile chord connectors for use in concrete rods in structures
JP2016151144A (ja) * 2015-02-18 2016-08-22 鹿島建設株式会社 定着体付き鉄筋の製造方法及び装置
WO2017174705A1 (fr) * 2016-04-08 2017-10-12 Wobben Properties Gmbh Corps de liaison, segment annulaire de tour d'éolienne et procédé de liaison de deux segments annulaires de tour d'éolienne
CN109295849A (zh) * 2018-10-31 2019-02-01 福州大学 一种带有锚固板的空心板铰缝构造及其施工方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0530316U (ja) * 1991-09-24 1993-04-20 大成建設株式会社 鉄筋の端部定着構造
JP2001040818A (ja) * 1999-07-30 2001-02-13 Shimizu Corp 棒鋼の定着構造
KR20040076644A (ko) * 2003-02-26 2004-09-03 주식회사 마이다스아이티 철근콘크리트 보강재 및 이를 포함하는 철근콘크리트구조물 건축 방법
JP2010174563A (ja) * 2009-01-30 2010-08-12 Sukematsu Iwashita 定着金具を備えた鉄筋および鉄筋の製造方法
KR20130104484A (ko) * 2012-03-14 2013-09-25 삼성물산 주식회사 단조가공 정착헤드 철근에 의한 보강방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0530316U (ja) * 1991-09-24 1993-04-20 大成建設株式会社 鉄筋の端部定着構造
JP2001040818A (ja) * 1999-07-30 2001-02-13 Shimizu Corp 棒鋼の定着構造
KR20040076644A (ko) * 2003-02-26 2004-09-03 주식회사 마이다스아이티 철근콘크리트 보강재 및 이를 포함하는 철근콘크리트구조물 건축 방법
JP2010174563A (ja) * 2009-01-30 2010-08-12 Sukematsu Iwashita 定着金具を備えた鉄筋および鉄筋の製造方法
KR20130104484A (ko) * 2012-03-14 2013-09-25 삼성물산 주식회사 단조가공 정착헤드 철근에 의한 보강방법

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140230360A1 (en) * 2011-09-21 2014-08-21 Lehigh University Ductile chord connectors for use in concrete rods in structures
US9340978B2 (en) * 2011-09-21 2016-05-17 Lehigh University Ductile chord connectors for use in concrete rods in structures
US10301826B2 (en) 2011-09-21 2019-05-28 Lehigh University Ductile chord connectors for use in concrete rods in structures
US10753096B2 (en) 2011-09-21 2020-08-25 Lehigh University Ductile chord connectors for use in concrete rods in structures
JP2016151144A (ja) * 2015-02-18 2016-08-22 鹿島建設株式会社 定着体付き鉄筋の製造方法及び装置
WO2017174705A1 (fr) * 2016-04-08 2017-10-12 Wobben Properties Gmbh Corps de liaison, segment annulaire de tour d'éolienne et procédé de liaison de deux segments annulaires de tour d'éolienne
JP2019513920A (ja) * 2016-04-08 2019-05-30 ヴォッベン プロパティーズ ゲーエムベーハーＷｏｂｂｅｎ Ｐｒｏｐｅｒｔｉｅｓ Ｇｍｂｈ 接続体、風力発電装置−タワーリングセグメント、および２つの風力発電装置−タワーリングセグメントの接続方法
RU2705530C1 (ru) * 2016-04-08 2019-11-07 Воббен Пропертиз Гмбх Соединительное тело, кольцевой сегмент башни ветроэнергетической установки и способ соединения двух кольцевых сегментов башни ветроэнергетической установки
CN109295849A (zh) * 2018-10-31 2019-02-01 福州大学 一种带有锚固板的空心板铰缝构造及其施工方法

Similar Documents

Publication Publication Date Title
CA2484978C (fr) Dispositif d'assemblage
CN100353009C (zh) 使用抗剪环连接若干钢构件的结构和方法
WO2015076429A1 (fr) Barre d'acier comprenant une tête de fixation et son procédé de fabrication
JP2001271451A (ja) 増厚鉄骨梁とその加工方法
KR101443831B1 (ko) 정착헤드가 구비된 철근 및 그의 제조방법
JP2007231663A (ja) 合成セグメント
US6009914A (en) Tube compression limiting apparatus and method
GB2036829A (en) Arches for Galleries, Tunnels or the Like
JP2008025236A (ja) 端部と中央部とで強度の異なる緊張材を用いたプレキャストプレストレストコンクリート梁
KR101773434B1 (ko) 콘크리트 파일과 강관 파일 결합용 이음장치
JPH09119184A (ja) 頭付鉄筋及びその組立方法
JP3404504B2 (ja) 連結式単管型構造部材
JP3971679B2 (ja) 鉄筋コンクリート建造物における構成材の材端固定構造
JP4866894B2 (ja) 定着部付き鉄筋、定着部付き鉄筋用素材、及び、アンカーボルト
JP2010255227A (ja) 柱梁接合構造、及び、鉄筋コンクリート部材
JP3890516B2 (ja) 耐震型柱・梁接合構造
KR101711344B1 (ko) 트러스 거더 고정 장치
EP1474571B1 (fr) Joint de dilatation et/ou de construction pour des planchers en beton et autres
JP6764645B2 (ja) 構造部材の接合構造
WO2016125776A1 (fr) Structure de raccordement de poteaux en béton armé et de poutres d'acier, et procédé de raccordement de poteaux en béton armé et de poutres d'acier
JP3569507B2 (ja) 鉄筋の接合方法と該方法に使用する接合装置
JP2001355314A (ja) 鉄筋の接続方法
JP2010168740A (ja) 開口補強構造
KR100627233B1 (ko) 댐퍼기능을 갖는 철골구조물용 접합부재
JP3772758B2 (ja) 柱と梁のコーナー連結具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13897717

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13897717

Country of ref document: EP

Kind code of ref document: A1